Medical injector with front loading and syringes to be applied with it

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to medical injectors with front loading and syringes, syringe interfaces, syringe plungers and adaptors for application with novel or existing medical injectors, in which syringe of special construction is made with possibility to be installed into injector and to be released from injector by means of split mechanism. Syringe for application with injector connects syringe-holding mechanism, which contains flexible ring. Syringe contains case, plunger, movably placed in case; at least one fastening element, connected with case. At least one fastening element interacts with flexible ring of syringe-holding mechanism for split fixation of syringe to injector. At least one releasing element is made with possibility to deform flexible ring in order to ensure syringe release from fastener to injector when syringe rotates around its axis with respect to injector. At least one releasing element is located in axial direction before at least one fastening element. Injector for injecting liquid from installed on it syringe contains case, drive element at least partly located in case and made with possibility of engagement with plunger, located inside syringe, and syringe-holding mechanism. Syringe-holding mechanism is connected with case and is made with possibility to intake syringe when it is moving axially backward with respect to syringe-holding mechanism irrespective of orientation of syringe around its axis. Syringe-holding mechanism in fact consists of flexible ring, held in fixed axial position in syringe-holding mechanism. In second version of injector implementation drive element contains flexible ring, located on it for engagement with plunger, located inside syringe. Flexible ring in first state is adapted for engagement with plunger and formation of connection with it, when plunger is turned around its axis into first position. Flexible ring, deformed to second state, is adapted for plunger release, when plunger is turned around its axis into second position. Syringe for application with injector, which contains syringe-holding mechanism. Syringe contains case, plunger, movably placed in case, and at least one fastening element, connected with case. At least one fastening element contains flexible ring, made with possibility of split fixation of syringe to injector.

EFFECT: invention allows to connect syringe with injector easily without taking into account specific orientation of syringe and/or syringe plunger.

16 cl, 7 dwg

 

Background of invention

The present invention relates to medical injectors, syringes, interfaces syringe adapter needle and syringe plungers for use with them. More specifically, the present invention relates to medical injectors front loading and syringes, interfaces, syringes, plungers of syringes and adapters for use with new or existing medical injectors, in which the syringe special design is made with possibility of installation in the injector and release of the split injector mechanism.

Medical injectors and syringes for injection of contrast medium into the patient's body to obtain images of biological structures known. For example, in U.S. patent No. 4677980, issued to D. M. Reilly et al. July 7, 1987, entitled "Injector for angiography and syringe for use therewith", which is transferred to the applicant of the present application, discloses a device angiographic injector. The device is intended for introduction of contrast medium into the vascular system of the animal in which the syringes are loaded back in compressive membrane of the injector. More specifically, the device comprises a rotary turret, fitted with a pair of compressive membrane and which is made to rotate so that when one of the gripping shells, ivory is the ROI behind the inserted syringe, is in the injection position, the second gripping the sheath is in the position in which it can be inserted behind the corresponding syringe. Then, when the injection of contrast medium from the first syringe is completed, the turret is rotated to translate the first syringe into the unloading position, and the second compressive sheath and the syringe simultaneously moved to the position of injection.

In the device described in the above patent, the actuator angiographic injector can quickly connect to or disconnect from the plunger of the syringe at any point on the trajectory of movement of the plunger of the syringe detachable mechanism. However, to split the mechanism to work properly, the plunger of the syringe should be in the correct orientation, consistent with the piston of the injector. Further, during loading of the syringe into the injector, the syringe must be properly aligned with the corresponding compressive shell, so that the plunger of the syringe and the piston of the injector to connect and disconnect.

The device improved in comparison with the above, are disclosed in U.S. patent No. 5383858 issued D..Reilly et al. January 24, 1995 gpod Medical injector front loading and syringe for use therewith", which is also transmitted to the applicant of the present application. In the device described in this patent, the syringe is set to front, IU the greater extent, in one embodiment, the injector that does not contain the compressive membrane than the shortcomings of the injector according to patent No. 4677980.

The injector described in patent No. 5383858 has a first detachable mechanism for fixing and releasing the syringe from the injector. In addition, the device contains a second releasable mechanism that engages and withdraws from the engagement of the piston of the injector and the plunger of the syringe. Rotation of the syringe, the syringe is attached to the injector or detached from it and, at the same time, the plunger is attached to the piston and detaches from it. This design requires that the syringe was mounted in the injector in a specific orientation so that the syringe could engage with the injector with the possibility of separation and, at the same time that the plunger can engage with the piston, with the possibility of separation. In addition, as in the syringe described in the patent No. 4677980, when assembling the plunger must be properly oriented within the syringe.

Another device of the injector described in U.S. patent No. 5300031 issued .Neer et al. April 4, 1994, entitled "Device for injecting fluid into animals and disposable syringe with front loading for him." This patent describes the different variants of the injector with compressive membrane, while the syringe is loaded into compressive membrane injector and extracted from it through the hole made on p is rednam the end of the compressive membrane. To hold the syringe in the pressure jacket, for example, during injection, the front end of the syringe is blocked on the front end of the compressive membrane. For correct connection of the syringe with compressive membrane, the syringe can be inserted into compressive membrane in only one orientation.

Each of the above examples, the syringe must be connected to the injector in a specific orientation to ensure correct insertion of the syringe. In order during the procedure, medical imaging syringe worked correctly, it is necessary to provide for proper adjustment. However, the desired orientation prevents quick installation and replacement of the syringe. The desired orientation may also lead to increased production costs and the complexity of the syringe.

Accordingly, although the above-described device injector and syringe were effective, there was a need for a more simple injector front loading. More specifically, to facilitate additional loading operations, the need arose in the syringe, which can be easily connected to the injector without regard to the specific orientation of the syringe and/or the plunger of the syringe. In addition, to facilitate Assembly of the components of the syringe has been necessary in the syringe with the plunger, which does not require orientation to a specific position in the cylinder or the base of the syringe. Besides this is about, to minimize the time required for preparation of the injector to the injection procedure, there is a need in the injectors containing automation features and/or advanced control.

Brief description of the invention

According to the present invention offers medical injectors and syringes for use with them that meet arising needs in a simplified system injector and syringe. More specifically, according to one aspect of the present invention provides an interface for the syringe and the mating syringe, which interact to ensure that the syringe can be easily, quickly and securely attached to the medical injector. The syringe does not require any particular orientation before connection to the injector. In addition, the plunger does not require any particular orientation relative to the cylinder of the syringe. And the syringe, and a plunger provided with a detachable mechanisms so that the syringe can be easily mounted in the injector and remove and replace with a new syringe.

According to one aspect of the present invention proposes a syringe for use with an injector containing the mechanism of retention of the syringe having a flexible ring. The syringe includes a housing having a rear end and a front end, a plunger located for movement in the housing, and at least one fastening ele is UNT, associated with the case. The fastening element interacts with a flexible ring mechanism for retaining the syringe for detachable mounting of the syringe to the injector. The syringe further includes at least one release element associated with the housing. The release element is actuated to create a deformation of the flexible ring for withdrawal of the syringe from the connection to the injector by turning the syringe around its axis relative to the injector. The release element is preferably in the axial direction ahead of the fastening element.

The fastening element can be connected to the rear end of the housing. Fastening element, for example, may contain the waste radially outward flange around the entire perimeter of the syringe. In another embodiment, the fastening element contains a lot of waste radially outward flanges located along the perimeter of the syringe. The mounting flange (or flanges) may also have backward inclined surface to facilitate interaction with a flexible ring holding mechanism.

The liberating element, for example, may include a number of diverging radially outward protruding elements which deform the flexible ring during rotation of the syringe around its axis to the point of disconnection. In one embodiment, the fastening element contains diverging radially outward flange, covering the entire perimeter ø the Ritz, and protruding elements depart radially outward of at least the same distance as the fastening element. The protruding elements may be directly in contact with the flexible ring to deform the flexible ring.

According to another aspect of the present invention offers the injector for injection of fluid from the front of the installed syringe on it. The injector includes a housing, a drive element at least partially located in the housing and configured to engage with the plunger located inside the syringe, and the retention mechanism of the syringe coupled to the housing. The mechanism of retention of the syringe is made with the possibility of seizure of the syringe when the movement of the syringe in the axial direction relative to the holding mechanism, regardless of the orientation of the syringe around its longitudinal axis. In one embodiment, the retention mechanism includes essentially a flexible ring that is held in a fixed axial position in the retention mechanism of the syringe.

The present invention, its characteristics and its inherent advantages will be clearer from the following detailed description with reference to the attached drawings.

Brief description of drawings

Different variants of the present invention is described with reference to the attached drawings, where:

Figa - side view of the variant of the system of the injector is about the present invention in a disconnected state;

FIGU is a perspective view of the syringe injector system for figa in position for landing at the interface of the syringe system of the injector;

Figs - front view with hidden lines of the syringe by figa rotated around the axis for engagement with a flexible ring interface of the syringe after the landing of the syringe by moving backwards in the axial direction in the interface of the syringe;

Fig.1D - front view with hidden lines of the syringe by figa rotated around the axis to move in the position to detach from the flexible ring interface syringe;

Figure 2 is a rear view in perspective of a flexible ring on figa, detached from the housing interface of the syringe;

Figure 3 is a rear view in perspective of a flexible ring on figa in operative connection with the housing of the interface of the syringe;

4 is an exploded view in perspective of a variant of the piston or driving element of the injector and a peer of the plunger of the syringe;

Figa - side view in cross-section and top view with hidden lines of the node of the syringe and plunger rotated around their common axis to position the gearing;

Figw - side view in cross-section and top view with hidden lines of the node of the syringe and plunger rotated around their common axis to position the coupler;

Figa - side view in cross-section and top view with hidden lines of the plunger Assembly, rotated around its axis in the engaged position relative to the piston;

Figw-side view in cross-section and top view with hidden lines of the plunger Assembly, rotated around its axis to the position of disengagement relative to the piston;

Figa - side view of the syringe and connector or interface syringe in which the syringe contains a flexible ring for detachable mounting of the syringe to the connector;

Figw - syringe and the connector figa on which the connector is shown in the cut, and where the syringe Rethimno connected to the connector, and

Figs - syringe and the connector figa on which the connector is shown in the cut, and where the syringe is rotated to translate the flexible ring in the stress state to release the syringe from the connector.

Detailed description of the invention

Other variants of the present invention shown in figa-6V. On these drawings figa-3 show a variant of the interface/connector for syringe, which Rethimno secures the syringe to the injector body. Figure 4-6B shows a variant of the system/interface node between the piston of the injector and the plunger of the syringe according to the present invention, which interact for the axial movement of the plunger within the syringe.

The injector system includes the interface of the syringe, cover the connector 4010' for connection of syringe 4012' injector 4014'. Interface/connector 4010' syringe forms a mechanism by which the syringe 4012' can quickly be set relatively injector 4014', without the need to Orient or rotate W the RIC 4012' around its longitudinal axis relative to the injector 4014' during installation. On figa, for example, shows the interface/connector 4010' syringe (hereinafter sometimes for the sake of brevity referred to as "connector 4010') of the present invention, detached from the injector 4014'. The rear surface 4016' connector 4010' is attached to the front surface 4018' injector 4014'. In an alternative embodiment, the connector 4010' may be made integral with the injector 4014.

The mechanism for detachable connection housing 4024' connector can only have essentially elliptical flexible ring 4026', which is located in a fixed axial position in the connector 4010' near the front end 4020'. Although the shape of the flexible ring 4026' here referred to is essentially elliptical, experts it is clear that the shape of the flexible ring 4026' do not exactly repeat the ellipse. Flexible ring 4026' works for fastening to it of syringe 4012'. However, in a variant on figa-3, other elements or components in the connector 4010', intended to interact with a flexible ring 4026', allowing the release of syringe 4012' from the connection with the connector 4010', are not required. Therefore, a flexible ring 4026' and syringe 4012' is arranged to communicate with each other (preferably, without the use of additional elements or components), as described in more detail below, to allow connection and disconnection of the syringe 4012' and soedinitel the 4010' (and accordingly, the injector 4014'). Thus, the interface or connector 4010' syringe essentially has a simplified construction. Syringe 4012', however, is also suitable for detachable connection interface injector known in the prior art.

Syringe 4012' comprises a cylindrical housing 4030' tapered section 4032' on the front end 4034'. Conical section 4032' integrally connected to the exhaust end 4036'. The outlet end 4036' equipped with a nozzle 4038' Luera, which can be connected with a tube (not shown), which eventually connected with the patient (also not shown). Syringe 4012' further includes a flange 4039', performed with the opportunity to interact with the connector, as described in published patent application U.S. No. 2002-0147429, filed February 20, 2002 and transferred to the applicant of the present invention, the contents of which are incorporated into this description by reference.

Syringe 4012' may be made of any suitable material, for example, polymeric material. On the back end 4022' syringe 4012' may include a flange 4042', which, when the syringe 4012' is connected to the connector 4010', helps to prevent contrast agent, resulting, for example, from the exhaust end 4036' or tip 4038' Luera, the connector 4010'.

The ridge or flange 4044' integrally formed on the syringe 4012' back from the flange 4042', closer to the rear is th end 4022' of syringe 4012'. In the shown embodiment, the flange 4044' formed continuously around the perimeter of syringe 4012'. Alternatively, the ridge or flange, instead take the form of a single continuous element, can be divided into two or more sections. However, this section must provide sufficient surface area and strength to hold the syringe 4012' in the injector 4014'.

Ridge 4044' contains two parts - inclined section 4046' and section 4048' shoulder, passing essentially perpendicular to the outer surface of the cylindrical body, 4030'. Two or more protruding tongue or protrusion 4050' preferably located in front of the shoulder 4048' between the shoulder 4048' and the flange 4042'. The tabs 4050' interact with an elastic ring 4026' for the liberation of syringe 4012' from the connection with the connector 4010', as described below.

To install the syringe other type of connector or interface 4010' of the syringe of the present invention, it is possible to make an adapter containing structural components (such as ridge 4044', the tabs 4050' and/or the flange 4042') of the rear end 4022' of syringe 4012' to install such a syringe for mounting the injector according to the present invention. In order to properly connect this syringe, the adapter preferably includes structural components, which is the response relative to the fastening elements of the syringe.

As shown in IG, 2 and 3, the front plate 4054' contains through it an aperture or hole 5058'. Around the periphery of the hole 4058' in the front plate 4054' passes the edge 4060'. In one preferred embodiment, when the syringe 4012' interacts with the connector 4010', the flange 4042' and the edge 4060' mate with one another to minimize exposure of any leaked contrast agent inside the connector 4010' through the hole 4058'. Alternatively, syringe 4012' can be constructed so as not to contain flange 4042', as it is clear to the experts. Although it is desirable to minimize the penetration of the contrast agent inside the connector 4010', it is considered that the connector 4010' will work even if often unavoidable contamination of some amount of contrast. However, the flange 4042' can also perform the additional function of a mechanical stop when it engages with the front surface 4020' front plate 4054', providing the correct axial position of syringe 4012 relatively injector 4014'.

Flexible ring 4026' may be made of acatalog copolymer or any other suitable material. As shown, for example, in figure 2, the flexible ring 4026' can contain any of the parties linear or planar section 4062', integrally connected with the two curved sections 4064'. As shown in the drawing, a flexible ring 4026' contains the vozny hole 4 068'. On the front side of the flexible ring 4026' can be performed one or more beveled surfaces 4082' to facilitate installation of the rear end 4022' and ridge 4044' of syringe 4012'.

As shown, for example, in figure 3, the rear surface 4096' front plate 4054' contains a cavity or recess 4098', which has a shape similar to the shape of the flexible ring 4026'. In the rear surface 4096' front plate 4054' made two cut 4104'. In the cut-4104' inserted tabs 4068' flexible ring 4026'. Deepening 4098' is so shaped that this deepening was more than flexible ring 4026', and the distance between the cut-4104' is greater than the distance between the projections 4068, when the flexible ring 4026' is not compressed. The cut-4104' help to prevent the rotation of the flexible ring 4026' inside 4024', at the same time allowing flexible ring 4026' to expand, as described below.

For connection of syringe 4012' interface 4010' rear end 4022' of syringe 4012' is inserted into the housing 4024' connector through the hole or interface 4058' in the front plate 4054'. Flexible ring 4026' is held or fixed in the recess 4098', made in the rear surface 4096' front plate 4054' so that the tabs 4068' sit in the cut-4104'. When the inclined surface 4046' ridge 4044' of syringe 4012' is in engagement with bevel 4082' flexible ring 4026', the ridge 4044' translates flexible ring 4026' from the relaxed state is s (see, e.g., figs) stretched (or stress) condition (see, e.g., figure 10).

After combs 4044' will release the back edge of the flexible ring 4026' and radially protruding projections or tabs 4050' will pivot out of contact with the flexible ring 4026', as described below (see, e.g., figs), the resilient nature of the flexible ring 4026' will cause it to move in a relaxed state. When the flexible ring 4026' can restore an unstressed condition, shoulder 4048' ridge 4044' interacts with the trailing edge of the flexible ring 4026'. Due to this, the syringe 4012' is held in place by a flexible ring 4026' and cannot be removed in the axial direction of the connector 4010'. When the flexible ring 4026' restores relaxed state, may receive an audio or other signal, as described above, indicating to the operator that the syringe 4012' is installed in the injector. Sound and/or other signal may be generated, for example, mechanical or electronic means. In a variant figa-3, a flexible ring 4026' has attached thereto, at least one essentially flat sections 4062' (essentially corresponding to the long or major axis of the flexible element 4026') magnet 4027' or other element that interacts with a proximity sensor 4059' (for example, a Hall sensor) for determining returned flexible ring 4026' in a relaxed state, for example, after installation of syringe 4012'. In this sense, when the flexible ring 4026' is in an unstressed condition, the magnet 4027' is close to the sensor 4059'. On the contrary, when the flexible ring 4026' stretched, magnet 4027' abstracted from the sensor 4059'. Preferably, the sensor 4059' is in operative connection with the control system injector to prevent injector 4014', if the flexible ring is in the stretched state (which indicates an incorrect or incomplete connection of syringe 4012' interface or connector 4010'). The sensor 4059' may also include an audible and/or other signal indicating that the syringe 4012' is correctly connected to the connector 4010' or that the syringe 4012' is disconnected from the connector 4010'.

After proper connection of syringe 4012' connector 4010' to extract the syringe from the connector 4010' you want to rotate the syringe 4012' is approximately 1/4 turn or approximately 90°, as described below. This operation is shown, for example, on figs and 1D. Essentially, the projections 4050' preferably depart radially outward at least to the same distance as the ridge or flange 4044'. When the syringe 4012' is rotated around its axis in the position shown in fig.1D, projections 4050' rest against the flexible ring 4026' and stretch it. In this position, the syringe 4012' can be moved axially forward relative to the positive connector 4010' so, to the ridge 4044' passed forward through the ring 4026', and the syringe 4012' is out of connection with the connector 4010'.

Syringe 4012' is made with full seated in the connector 4010' (that is, to move it the rearmost axial position) regardless of the orientation or rotation of syringe 4012' around its axis relative to the connector 4010'. As described above, elimination of the requirement of the exact orientation for full planting syringe front loading interface or connector simplifies the operation of the compound needle of the present invention with the mechanisms of the interface or connector of the present invention compared to conventional syringes, in which, for example, flanges need it to be aligned with openings formed in the interface of the syringe, for planting syringe movement back.

When the syringe 4012' is fully seated in the connector 4010' (or connector known from the prior art), the operator must ensure that the syringe 4012' is rotated around its axis so that the projections 4050' out of contact with the flexible ring 4026', and Flex ring 4026' could return to an unstressed condition, as shown, for example, on figs. The need to rotate the syringe 4012' in a predetermined position or in a predefined range of positions after the syringe 4012' is fully seated movement back in the connector 400', only minimally increases the time necessary for the operator to connect the syringe 4012' connector 4010' compared to the interaction between the syringe and connector known from the prior art. However, the use of projections 4050' for the liberation of syringe 4012' from the connection with the connector 4010' can significantly simplify the connector 4010' in comparison with the known connector. As shown in figs, syringe 4012' can be rotated so that the projections 4050' was in the range of positions varying in the range of angle θ of approximately 90°, to keep the connection with the connector 4010' or with a known connector. Similarly, as shown in fig.1D, syringe 4012' can be rotated so that the projections 4050' was in the range of positions within the angle f of approximately 10°to release the syringe 4012' from the connection with the connector 4010' or known by the connector.

Figure 4-6B shows a variant of the interface node 7000 for the interactions of the piston of the injector and the plunger of the syringe for use, for example, in the injector 4014'. In this embodiment, the piston 7100 contains essentially elliptical or oval elastic ring 7110, which is performed with the opportunity detachable connection of the piston 7100 injector with node 7000 interface plunger. Although the shape of the flexible ring 7110 named here is essentially elliptical, specialists p is clear, the shape of the flexible ring 7110 need not exactly follow the shape of the ellipse. As shown, for example, in figure 4, the piston 7100 includes a first or rear element 7120, which has a saddle 7130 for elliptic flexible ring 7110. Preferably, the flexible ring 7110 contains one or more elements, for example, exhaust radially inward elements 7112, which prevent rotation of the flexible ring 7110 relative to the piston 7100, when the flexible ring 7110 planted in the saddle 7130. In option 4, the saddle 7130 contains essentially cylindrical, protruding in the axial direction of the output element 7132, through which and around which passes a flexible ring 7110 to another in essentially all shelf 7134. In the element 7132 made the groove 7136, in which sit the tabs 7112 to prevent rotation of the flexible ring 7110 relative to the piston 7100. The piston 7100 further may include a second or front element 1740, which is attached to the rear element 7120, as shown, for example, in figure 4-6B.

When essentially elliptical or oval flexible ring 7110 sits in the saddle 7130, as described above, and a flexible ring 7110 is in an unstressed condition, the portion of the flexible ring 7110 in the area of the main axis or on the widest section of the flexible ring 7110 beyond the outer edge of a shelf 7134, as shown, for example, on figa. When the syringe 4012' moves in the axial direction of the Azad, for installation in the connector 4010'node 7000 interface plunger can be properly positioned in the axial direction, and a syringe 4012' and the piston 7100 take appropriate axial positions so that the corresponding directed backwards movement of the node 7000 plunger ago by directional movement of syringe 4012' forced the piston 7100 fully take in the node 7000 plunger when the syringe 4012' is fully seated in the connector 4010'. Alternatively, the piston 7100 can be planted in the node 7000 separately from the installation of syringe 4012' in the connector 4010'. The relative orientation or rotation of the node 7000 plunger around its axis preferably does not affect the ability of the piston 7100 to sit in the node 7000 plunger.

Options figure 4-6B, the plunger Assembly comprises a base 7005 having a beveled surface 7010 on the back end, which deforms the flexible ring 7110 to the stretched state (figv and 135B), which is necessary for passing the flexible ring 7110 to the front of the shelf 7020, formed around the inner surface of the base 7005 plunger. After the flexible ring 7110 will be in front of a shelf 7020, flexible ring 7110 returns to an unstressed state, if the base 7005 plunger to rotate around its axis in the position shown in figa and 6A.

In this respect, before shelf 7020, essentially cylindrical inner wall of the base 7005 plunger which contains a passing radially inward or flat areas 7030. When a node 7000 plunger rotates around the axis so that the flat areas 7030 essentially aligned with the long or major axis of the flexible ring 7110, the emphasis of flat parts 7030 flexible ring 7110 translates this ring 7110 in stress state, as shown in figv and 6B. In this state, the piston 7100 can move in the axial direction relative to the site 7000 plunger (or node 7000 plunger can move axially forward relative to the piston 7100) so that the node 7000 plunger can be disengaged from the piston 7100. On the contrary, when the flat sections 7030 rotated approximately 1/4 turn or 90° from the position of alignment with the long or major axis of the flexible ring 7110 (so that the flat areas are essentially in alignment with the short or minor axis of the flexible ring 7110), flexible ring 7110 will be in a relaxed state, as shown in figa and 6A, and the back surface of the flexible ring 7110 rests on the shelf 7020, and the movement of the piston 7100 ago will cause the node 7000 plunger to move back into the syringe 4012' (for example, to suck the liquid into the syringe 4012').

Preferably, the node 7000 plunger is oriented or rotated around its axis in the syringe 4012' so that the position of the flat or radially inward protruding sections 7030 essentially aligned with the protruding radially outward sections 4050' of syringe 4012', as shown nafiga and 5B. Node 7000 plunger is also preferably located within the syringe 4012' so that the plunger does not rotate around its axis relative to the syringe 4012'. The friction between the elastomeric coating 7040 plunger and the inner wall of the cylinder of the syringe, for example, prevents the rotation of the node 7000 plunger relative to the syringe 4012'. Thus, after the syringe 4012' is shifted back to the landing in the connector 4010', when the syringe 4012' turn in the situation described with reference to figs for full engagement with the connector 4010'node 7000 plunger will turn to full engagement with the piston 7100, as shown, for example, on figa. Similarly, when the syringe 4012' turn 1/4 turn to release the connector 4010', as shown, for example, on FIGU, flat areas 7030 base 7005 essentially in alignment with the long or major axis of the flexible ring 7110, as described above, and the piston 7100 can be removed from the site 7000 plunger.

From the above descriptions experts it is clear that an elliptical or oval flexible ring, described above, can also be installed inside the plunger Assembly, and the piston may contain interactive seat in the piston of the injector to form a system, the interface node for the plunger of the syringe. This option may not work as well as syringe 4012' is connected with the connector 4010' and detached from it.

Anal is Gino, on figa-7C shows another variant of the interface/connector 4010" syringe 4012" (shown partially)which Rethimno secures the syringe 4012" to the body of the injector (not shown in figa-7C), as in the case of building 4014' injector. Syringe 4012" and the interface 4010 interact essentially the same as the piston 7100 and node 7000 plunger described above. In this sense, syringe 4012" contains a flexible ring 4044"planted in the recess 4048", formed in the rear part of the syringe 4012". Rear 4046" flexible ring 4044" may be inclined or beveled to facilitate engagement with the connector 4010", as described below.

In this respect, for the connection of syringe 4012" connector 4010', syringe 4012" is inserted into the hole or channel 4011". The front end a" hole or channel 4011" may be beveled or expanded to facilitate the passage of the flexible ring 4044" in the hole 4011". Syringe 4012" move backward relative to the connector 4010" up until the flexible ring 4044" will not work for shelf 4020" connector 4010". Syringe 4012" may include a flange 4042" to limit, as described above, the flow of the injection fluid in the injector and/or to assist in the correct axial positioning of syringe 4012".

As in the base design 7005 plunger, behind shelves 4020" essentially cylindrical wall of the channel 4011" contains diverging radially inward or square the ski areas 4030". When the syringe 4012" turn around its axis so that the flat areas 4030" essentially aligned with the long or major axis of the flexible ring 4044", the emphasis of flat parts 4030" flexible ring 4044" makes flexible ring 4044" to stretch, as shown in figs. In this state, the syringe 4012" you can move in the axial direction relative to the connector 4010" so that the syringe 4012" can be disconnected from the connector 4010". On the contrary, when the syringe 4012" and flexible ring 4044" rotated in position about 1/4 turn or 90° from the above provisions, so that the flat sections 4030" essentially combined with short or minor axis of the flexible ring 4044", flexible ring 4044" is in relaxed condition, as shown in figv, and the front surface of the flexible ring 4044" rests on the shelf 4020" and prevents directed forward axial movement and removing the syringe 4012". Rotation of the flexible ring 4044" relative to the syringe 4012" preferably prevents, for example, due to the presence of the stops 4049" (see figa) on the flexible ring 4044"that prevent such relative rotation. Such stops may, for example, to work as protruding elements 7112 flexible ring 7110.

In the above description and the attached drawings showing the preferred options currently on the table of the invention. Various modify the tion, add and alternative constructions, not beyond the scope of the disclosed invention, of course, will be clear to experts in the light of the above description. For example, appropriate mechanisms mating connection and disconnection on the injectors and syringes described above, can be used interchangeably. Scope of the invention defined by the attached formula, instead of the above description. All modifications and variations falling within the meaning and range of equivalency of the claims should be included in its scope.

1. A syringe for use with an injector containing the mechanism of retention of the syringe containing the flexible ring, and the syringe contains:
a housing having a rear end and a front end;
the plunger, movably accommodated in the housing;
at least one fastening element associated with the housing, with this at least one fastening element interacts with a flexible ring mechanism for retaining the syringe for detachable mounting of the syringe to the injector; and
at least one release element associated with the housing, with at least one release element is made with the possibility of deformation of the flexible ring to ensure release of the syringe from the attachment to the injector during the rotation of the syringe around its axis relative to the injector, while this is less the th least one release element is located axially in front of at least one fastening element.

2. The syringe according to claim 1, in which at least one fastening element contains diverging radially outward flange, covering the entire perimeter of the syringe.

3. The syringe according to claim 2, in which the exhaust flange has an inclined rear surface to facilitate interaction with a flexible ring holding mechanism.

4. The syringe according to claim 1, in which at least one fastening element contains a lot of waste radially outward flanges located along the perimeter of the syringe.

5. The syringe according to claim 1, additionally containing element flange coupled to the housing and configured to be in contact with the corresponding surface of the injector when the syringe Rethimno connected with it, while the element flange is located axially in front of at least one releasing element.

6. The syringe according to claim 5, in which the element flange is configured to essentially prevent the ingress of fluid into the injector.

7. The syringe according to claim 5, in which the contact element flange with a corresponding surface of the injector is a correct indication of the axial position of the syringe relative to the injector when the detachable engagement of the syringe with the injector.

8. The syringe according to claim 1, in which at least one criminalelementdc connected to the rear end of the hull.

9. The syringe according to claim 1, in which at least one release element contains many protruding radially outward elements which deform the flexible ring when you rotate the sprite around its axis to position the end key.

10. The syringe according to claim 9, in which at least one fastening element contains diverging radially outward flange around the entire perimeter of the syringe, and the projecting elements are radially outward of at least the same distance as the fastening element.

11. The syringe according to claim 9, in which the protruding elements are in direct contact with the flexible ring to deform the flexible ring.

12. The syringe according to claim 1, in which the plunger is in detachable engagement with a drive member of the injector through a flexible ring.

13. Injector for injection of fluid from the installed therein syringe containing:
the case,
the drive element at least partially located in the housing and configured to engage with a plunger located within the syringe; and
the mechanism of retention of the syringe coupled to the housing and configured to accept the syringe when it is sent back axial movement relative to the retention mechanism of the syringe regardless of the orientation of the syringe around its axis, while the mechanism of retention of the syringe is essentially composed of a flexible ring, the hold is maintained in a fixed axial position in the retention mechanism of the syringe.

14. Injector for injection of fluid from the installed therein syringe containing:
case;
the drive element at least partially located in the housing, with the drive element includes a flexible ring for engagement with the plunger located inside the syringe, while the flexible ring in the first state adapted to engage the plunger and the formation of compounds with him when the plunger is rotated around its axis in the first position, and a flexible ring which is deformed to the second state, is adapted to release the plunger when the plunger is rotated around its axis in the second position; and
the mechanism of retention of the syringe connected with the case.

15. A syringe for use with an injector containing the mechanism of retention of the syringe, the syringe contains:
a housing having a rear end and a front end;
a plunger movably mounted in the housing; and
at least one fastening element associated with the housing, with this at least one fastening element includes a flexible ring made with the possibility detachable mounting of the syringe to the injector.

16. The syringe according to § 15, in which the rotation of the syringe around its axis when it is attached to the injector, causing the deformation of the flexible ring that provides the ability to detach the syringe from the injector.



 

Same patents:
Unit-dose syringe // 2392009

FIELD: medicine.

SUBSTANCE: invention belongs to syringe-devises and can be applied in medicine, engineering, defence, building, maintenance, household. Unit dose syringe containing solution-composition, and device for content's delivery from unit-dose syringe. It is designed in form of sleeve made of film or foil or foiled film fixed on sleeve's entrance and exit to truncated cups-covers with nozzles of unit-dose syringe filling, and to cup of injection-needle or aerosol valve, or nozzle, and placed with slid fit into cylindrical barrel-container.

EFFECT: application field of unit dose syringe expands, reliability rises.

5 cl

FIELD: medicine, stomatology.

SUBSTANCE: the present innovation deals with applying the methods of local anesthesia and could be applied at anesthetization of mandibular teeth. Due to palpation one should detect the most deepened site in area of anterior edge of mandibular branch. Then with the help of a syringe supplied with a needle of semi-oval shape it is necessary to puncture oral mucosa just into area of mandibular lingual followed by introducing the anesthetic. The innovation enables to avoid the traumas of fascia and a tendon of temporal and pterygoid muscles due to excluding the contact with the bone and oval shape of the needle and, also, achieve adequate anesthetization from the first time.

EFFECT: higher efficiency.

1 ex

FIELD: medical equipment, in particular, laparoscopic instruments.

SUBSTANCE: apparatus has syringe with piston and pipe connection, cylinder with compressed CO2 gas, said cylinder being equipped with lead plug to be punctured, cylinder holder with manometer, and needle provided with channel. Needle is positioned centrally of cylinder holder bottom. Cylinder is adapted for joining with holder. Apparatus is further provided with three-way valve to be coupled to connection pipe. Syringe may be hermetically inserted into cylinder, which is enabled by layer. Holder has cover with screw located therein and having handle at its proximal end and ejector at its distal end. Ejector provides putting of cylinder onto needle upon rotation of handle.

EFFECT: increased efficiency in forcing out of liquid under pressure from syringe.

3 cl, 1 dwg

FIELD: medical equipment, in particular, laparoscopic instrument.

SUBSTANCE: apparatus has syringe with piston and pipe connection, upper and lower planks for connecting two pipes so as to define rectangular elongated carcass, movable plank with retainer secured thereto, and three-way valve. Upper plank is equipped with opening and retainer protection device. Lower plank has central depression for syringe distal end and central aperture for pipe connection adapted for connection with three-way valve. Movable plank has circular slot for syringe proximal department and is adapted for displacement within slots provided in middle-upper part of pipes. Compression springs are positioned within pipes for applying force to movable plank.

EFFECT: increased efficiency in replacement of liquid under pressure from syringe.

3 cl, 1 dwg

The invention relates to medicine, in particular, to a device for the dosed introduction into the patient medicines in liquid form

The invention relates to medicine and, more specifically, to a device for input of drugs in human tissues

The invention relates to parenteral administration of pharmaceutical preparations

FIELD: medicine.

SUBSTANCE: invention relates to medicine, in particular to proctology, and deals with correction of pelvic floor pathology, conditioned by congenital insufficiency of injury of muscular structures of obturative apparatus of rectum. For this purpose cell mass of autologous bone marrow punctate is introduced in injection form into soft tissues of paa-anal area and around rectum. Then after each introduction said areas are subjected to impact of bipolar symmetric fluctuating current, one electrode being placed on lumbar spine, the other - in region of anus. Current force is gradually increased to 5-10 mA until noticeable muscle contraction appears. Course consists of 10 daily procedures.

EFFECT: in short terms method ensures recovery of obturative apparatus of rectum similar to natural, is low-traumatic and simple in application.

2 ex

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to gynaecology, and may be used for treatment of benign diseases of uterine neck. For this purpose after basis therapy with radio wave method of treatment, from the first days the female patients use hormonal therapy with single-phase contraceptives.

EFFECT: invention makes it possible to reduce time of postoperational wound epithelisation and to reduce frequency of uterine neck diseases relapses.

2 ex

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to surgery, and can be used for post-surgical treatment of the patients after an intestinal obstruction surgery. That is ensured by the diversional therapy. It is added with the intravenous drop-by-drop introduction of ozonised physiologic saline of ozone concentration 5mg/l in amount 200 ml for the first seven postoperative days once a day.

EFFECT: reduced time of enteroparesis relief with higher physiological value of the treatment and extended range of products for enteroparesis relief in such patients.

2 tbl

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to subcutaneous syringe, in particular to safe self-destructive disposable syringe. Safe syringe consists of hollow tube, rod, inserted into internal part of hollow tube and rubber piston, fixed on rod end apex, and needle-holder, fixed on the anterior end of hollow tube. Needle-holder consists of conic base and support. Conic base has tubular cone for introduction into the needle and round base for installation into the interior of hollow tube, syringe also contains ring-like sealing, fixed on contact surface between cone base and tube, ring-like slot made on internal wall of hollow tube, brought closer to anterior end for catching needle holder, rod has conic head, made on anterior end, and said conic head has ring burr, made in medium part.

EFFECT: invention ensures safe self-destructive syringe, in which subcutaneous needle can be substituted with various standard needles, and syringe structure is simple for production and application with high safety.

14 cl, 12 dwg

FIELD: medicine, pharmaceutics.

SUBSTANCE: there is claimed application of concentrated (from 30 mg/mg to 150 mg/ml) methotraxate solution for preparation of medication for subcutaneous introduction for therapy of inflammation-associated autoimmune diseases. Invention also relates to ready for application syringe, carpula, containing said pharmaceutic composition in form of solution, and handle-injector, which contains said carpula and/or ready for application syringe - all contain from 30 mg/mg to 150 mg/ml methotrexate. It is demonstrated that increase of solution concentration to 50 mg/ml reduces volume of daily introduced liquid to 0.6 ml.

EFFECT: there is ensured easier tolerance by patients, which has positive impact on their trust.

32 cl, 2 ex

FIELD: medicine, pharmaceutics.

SUBSTANCE: there is claimed application of concentrated (from 30 mg/mg to 150 mg/ml) methotraxate solution for preparation of medication for subcutaneous introduction for therapy of inflammation-associated autoimmune diseases. Invention also relates to ready for application syringe, carpula, containing said pharmaceutic composition in form of solution, and handle-injector, which contains said carpula and/or ready for application syringe - all contain from 30 mg/mg to 150 mg/ml methotrexate. It is demonstrated that increase of solution concentration to 50 mg/ml reduces volume of daily introduced liquid to 0.6 ml.

EFFECT: there is ensured easier tolerance by patients, which has positive impact on their trust.

32 cl, 2 ex

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to syringes. Syringe contains cylinder, which has plunger, which is in sliding and sealing meshing with cylinder. Cylinder has means for aspiration for ensuring possibility of aspiration during syringe application. Means for aspiration contains at least one, set in action manually, elastic section of cylinder. Elastic section, set in action manually, or each of elastic sections, set in motion manually, is formed by local reduction of cylinder wall thickness.

EFFECT: invention allows to carry out aspiration operation in simple way and with minimal movement of syringe, which reduces chance of producing pain sensations in patient and helps to introduce injected solution into necessary place.

11 cl, 6 dwg

Automatic injector // 2401668

FIELD: medicine.

SUBSTANCE: invention relates to field of medicine and is used for injections of liquid medications, performed by patients themselves, as well as in giving first medical aid in conditions of emergency situations, in war conditions and to people injured in catastrophes, accidents and natural disasters. Automatic injector contains case with located in it ampoule with medication, safety device and needle-holder with injection needle, whose other opposite end is made with possibility to puncture ampoule surface, trigger mechanism and piston. Needle-holder is made in form of two connected cylinders of different diametre. Cylinder of larger diametre is provided with ring groove and butt end site. Safety device is made in form of hollow cylindrical stepped plug, whose smaller cylinder on lateral internal surface is connected with external surface of needle-holder and rests on its butt end site. Wall of smaller cylinder under action of force applied during injection, has possibility to round butt end site of needle-holder and slide along its ring groove walls. Ampoule represents corrugated reservoir and is located between butt end planes of piston and safety device. Larger cylinder of needle-holder is connected with its guide part, interacting with case. Ampoule, piston, safety device and needle-holder are installed successively and coaxially and have possibility of simultaneous movement along case axis.

EFFECT: invention ensures reliable protection against untimely and accidental puncture of ampoule and introduction of medication to patient in corpore.

5 cl, 2 dwg

FIELD: medicine.

SUBSTANCE: invention refers to a device for the introduction of liquid dosage forms to a mammal, preferentially to a human, preferentially subcutaneously, in more detail, the present invention refers to an injection device able to transfer a non-visual feedback signal to the user to indicate that a specified dose is introduced by the injection device. The injection device contains a body, a dose adjustment element, a piston rod and a dosing mechanism. The dose adjustment element is actuated by the user to specify a required dose for injection. The rod is designed to interact with the piston to ensure the introduction of the adjusted dose from an ampoule. The dosing mechanism is designed to actuate on the piston rod to ensure the introduction of the adjusted dose. Besides the dosing mechanism is designed to transmit a non-visual feedback signal to the user after the dosing termination only. The first and second sections of the injection device rotate relatively to each other during dosing that causes at least two sections of the injection device to rest on or interlock with each other. Said rest or interlocking enables a non-visual feedback signal to be transmitted.

EFFECT: invention ensuring exact and non-visual indication of the dosing termination to the user.

12 cl, 15 dwg

FIELD: medicine.

SUBSTANCE: invention refers to a device for the introduction of liquid dosage forms to a mammal, preferentially to a human, preferentially subcutaneously, in more detail, the present invention refers to an injection device able to transfer a non-visual feedback signal to the user to indicate that a specified dose is introduced by the injection device. The injection device contains a body, a dose adjustment element, a piston rod and a dosing mechanism. The dose adjustment element is actuated by the user to specify a required dose for injection. The rod is designed to interact with the piston to ensure the introduction of the adjusted dose from an ampoule. The dosing mechanism is designed to actuate on the piston rod to ensure the introduction of the adjusted dose. Besides the dosing mechanism is designed to transmit a non-visual feedback signal to the user after the dosing termination only. The first and second sections of the injection device rotate relatively to each other during dosing that causes at least two sections of the injection device to rest on or interlock with each other. Said rest or interlocking enables a non-visual feedback signal to be transmitted.

EFFECT: invention ensuring exact and non-visual indication of the dosing termination to the user.

12 cl, 15 dwg

FIELD: medical engineering.

SUBSTANCE: device has needle with an adapter and protection cap fixed on the adapter. The device additionally has flexible envelope arranged inside of the cap with space relative to its surface. The envelope is connected to the needle near its base on the same side with the adapter in nondetachable way. The flexible envelope is manufactured from film to be pierced by the needle. It is shaped as cylinder near the base and as wedge near the tip.

EFFECT: excluded bacterial contamination of transfusion medium.

1 dwg

FIELD: medical engineering.

SUBSTANCE: device has syringe for irrigating periodontal recesses and/or root canals and heat-insulating casing. The syringe has power supply source connected to thermostat and heating thermoelement for heating drug to 50-60□C, which operation is controlled with thermometer. The syringe is enclosed into heat-insulating casing provided with button for putting the thermostat on.

EFFECT: enhanced effectiveness in treating periodontitis and caries cases.

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