Safe syringe

FIELD: medicine.

SUBSTANCE: invention refers to syringes. First version of design implies safe syringe including injector as tube with centre aperture, forming internal container, push rod inserted into injector container by flanged piston, bush with hollow sleeve being hold by injector aperture, needle assembly and sealing element. Sleeve is equipped by upper detachable junction and lower bush in its cavity so that needle base is supplied with connecting insert forming upper detachable junction. Lower push provides connection with flanged push rod. Needle assembly consists of needle base and needle body. Needle base is mounted outside of bush sleeve. Sealing element is made of elastic materials and preliminary formed by bush sleeve, and include external section provided outside of sleeve and forming air-tight connection with internal wall of injector container. Second version implies that needle base is supplied by connecting insert for upper detachable sleeve junction sealing element is furnished with lower bottom bush inside of sleeve for detachable junction with flanged push rod. In third version needle base is mounted outside of bush sleeve, and sealing element inside of sleeve is provided with upper and lower bushes, and needle base is furnished with connecting insert forming upper detachable junction, and lower bush provides connection with flange of pusher rod. In fourth version needle base is mounted outside of bush sleeve, but thus sealing element is equipped with internal threaded section, and forms lower bush inside of sleeve, and needle base is supplied with external threaded section to form connection with external threaded section, and lower bush provides connection with flange of push rod. In fifth version needle base also is mounted outside of bush sleeve, and sealing element is supplied with lower bush inside of sleeve to form connection with flange of push rod.

EFFECT: assemblage simplification, productivity increase, and profitability increase.

15 cl, 18 ex

 

BACKGROUND of INVENTION

1. The technical field of the invention

In General, the present invention relates to syringes and, in particular, to the syringe, which is to improve security, includes needle, samothewise after injection.

2. Description of the prior art,

As shown in Fig and 18, a member of an existing safe syringe (application of Taiwan 87219129) includes the injector 1, the sleeve 2 is placed inside, the site of the needle 3, is screwed into the sleeve 2, and the push rod 4 is moved inside of the injector 1. The internal volume of the injector 1 designed in the form of container 101, which connects the end hole 102 that communicates with the container and between the container 101 and a face hole 102 is located a shoulder 103. The sleeve 2 has a flange 201 placed on the shoulder 103, the cylinder 202 is output coaxially aligned with one side of the flange, and into the cylinder 202 is set to ring 203. In addition, on the inner surface of the cylinder 202 is executed flange 204, and on the other side of the cylinder threaded section 205. The site of the needle 3 consists of a base of the needle 301, twisted pair into the threaded section 205, and the needle body 302, mounted inside the base of the needle. In addition, the push rod 4 is working spindle 401, the piston 402 mounted on the shaft 401 and forming an airtight fluid connection with the container 101 and the protrusion 403, to the which comes out (in relation to the piston 402) and may rely on the flange 204 of the sleeve 2. In the center of the circle is the slot 404, providing elasticity protrusion 403. When the sleeve 2 is inserted into the container 101, the cylinder 202 is inserted into the end hole 102, and a flange 201 abuts against the shoulder 103, the push rod 4 can be inserted into the container 101 all the way into the sleeve 2, but the ledge 403 cannot pass through the flange 204, fixation of the sleeve 2. Then the Assembly is completed so that the threaded section 205 of the sleeve 2 through the end hole 102 of the injector 1 is screwed to the base of the needle 301. Describes the syringe has the following disadvantages:

1. Since the sleeve 2 and the o-ring 203 is made as two separate parts for their manufacture and subsequent Assembly requires two independent devices, which leads to a higher cost structure.

2. Due to the small size of the ring 203 his hand Assembly difficult. However, the mechanical Assembly is falling out of the ring and damage, due to its elasticity. In addition, if the ring 203 is blocked by an alert device mechanical Assembly, you have to spend time for adjustment.

3. During Assembly it is necessary that the push rod 4 has been inserted into the container 101 of the injector 1 for fixing the sleeve 2, only after that, the sleeve 2 can freely connect to the host of the needle 3, resulting in inconvenience during Assembly.

4. Increases the total number of parts, the AK as the o-ring 203 is made separately from the sleeve 2. Meanwhile, the gap 404 should be placed in the center of the ledge 403 so that the protrusion 403 could freely pass through the flange 204.

5. Two separate elements: the sleeve 2 and the base of the needle 301, can be reliably connected only by the Assembly. Sleeve 2 must be free to rotate relative to the base of the needle 301, thus, the base of the needle 301 may be freely screwed into the threaded section 205 of the sleeve 2.

SUMMARY of the INVENTION

The present invention offers a simple Assembly secure the syringe, when the mechanical Assembly which eliminates the loss of parts and improves performance.

In addition, the present invention offers a safe syringe, which sleeve provides automatic rejection of the body of the needle in response to the impact caused by the fact that the body of the needle is inserted into the injector.

The present invention also offers a safe syringe, in which the sleeve and the site of the needle is made at the same time, which reduces the number of parts and Assembly steps.

Part of the syringe of the present invention includes an injector placed in the sleeve, the site of the needle screwed into the sleeve, and a movable push rod inside the injector. The main technological feature is the sealing element is made of elastic material, which is formed in advance and neposredno is but the liner sleeve and the outer portion of which is located outside the sleeve and forms an airtight fluid connection with the inner wall of the container of the injector. Thus, when approaching the push rod to the sleeve protrusion forms a connection of the push rod sleeve.

You can apply various models of the sealing element, for example, closed only on the outside of the liner, or the shape of which is determined by using the lower bushings or upper/lower bushings or upper threaded section/lower sleeve. And between the lower bushing and the inner cavity may be installed intermediate the shoulder.

BRIEF DESCRIPTION of DRAWINGS

Figure 1 shows the exploded view of the preferred option implementation of the present invention.

Figure 2 shows a perspective view of the sleeve of figure 1.

Figure 3 shows the exploded view of the second preferred variant implementation of the present invention.

Figure 4 shows the exploded view of the third preferred variant implementation of the present invention.

Figure 5 shows a perspective view of the sleeve in figure 4.

Figure 6 shows a section along the line 4-4 in figure 4.

7 shows the section of the sleeve and the site of the needle in the injector.

On Fig shows a diagram of the treatment with the push rod for fastening protrusion in the sleeve.

Figure 9 shows another schematic drawing of the push rod for retracting the needle into the injector.

Figure 10 shows the cross section of the sleeve when working with sloping shoulders the com.

Figure 11 shows the scheme of figure 10 by pulling the push rod for retracting the needle into the injector.

On Fig shown exploded cross-section of a fourth preferred variant implementation of the present invention.

On Fig shows a cross-section of a fourth preferred variant implementation of the present invention.

On Fig shows a cross-section of a fifth preferred alternative implementation of the present invention.

On Fig shows a variant of the cross section of the fifth preferred alternative implementation of the present invention.

On Fig shown monolithic variant of the piston rod.

On Fig shows a perspective view of the elements of safe syringe.

On Fig shown incision safe syringe.

A DETAILED DESCRIPTION of the INVENTION

Features and advantages of the present invention more clear after careful consideration of the following detailed description of the preferred alternative implementation of the present invention with reference to the accompanying drawings.

As shown in Fig.1-2, part a safe syringe according to a preferred variant implementation of the present invention includes the injector 10, the sleeve 20 is placed inside the injector 10, the site of the needle screwed into the sleeve 20, and a movable push rod 40 within the injector 10.

Cylindrical injector 10 with the worth of the tube 11, surrounding the axis L with the formation of the container 111, and the transition tube 12, fortified with the end of the tube 11. Within the transition tube made a small hole 121 that communicates with the container 111, while on the border of the hole and the container 111 are the stop 13 and the groove 14.

A hollow tubular sleeve 20 includes a sleeve 21 and a pre-made on the sleeve 21 of the sealing element 22, is placed inside the injector 10 from the side openings of the container 111 opposite the hole 121. The sleeve 21 has a flange 221 which abuts on the stop 13. The sealing element 22 is made of an elastic material such as rubber, is molded directly in the flange 221 of the outer sleeve 23, while the outer diameter D of the sealing element 22 is larger than the diameter of the flange 221 of the respective sleeves 21. Thus, the sealing element 22 can be inserted into the groove 14 within the injector 10 to provide an elastic airtight seal. In addition, the sleeve 21 provided with the upper plug connection 213 (in this example, the internal thread), made in the hole 210, and the lower sleeve 215.

The site of the needle 30 comprises the base of the needle 31, the needle body 32, is fixed inside the base of the needle 31, and the cap 33 to the base of the needle 31 and the needle body 32. In addition, on the outer surface of the sleeve 21 is made of the thrust ring 312, the base of the needle 31, provided with soedinitelnoj insert 311, which can be inserted into the hole 121 to form the upper plug connection 213.

Part of the push rod 40, which is inserted into the container 111 inside the injector 10 includes a working shaft 41, a piston 42 that is placed on the end of rod 41 and firmly part of the container 111 and the protrusion 43, which is located on the outside (towards the piston 42) and can be captured by the lower sleeve 215. When the protrusion is captured by a lower sleeve 215, the push rod 40 and the sleeve 20 can form a fixed connection.

As shown in figure 3, safe syringe according to the second preferred variant implementation of the present invention has a construction similar to the construction of the syringe in the first embodiment. The difference is in the sealing element 22 with the lower sleeve 216 within the sleeve 21, is used for the formation of compounds with the tab 43 of the push rod 40.

As shown in Fig.4-6, safe syringe according to a third preferred variant implementation of the present invention includes an injector 14, the sleeve 20 mounted inside the injector 14, the site of the needle screwed into the sleeve 20, and a movable push rod 40 within the injector 14.

Cylindrical injector 14 consists of a tube 11 surrounding the axis L with the formation of the container 111, and the transition tube 12 mounted on the end of the tube 11. Within the transition tube is made small from Erste 121, communicates with the container 111, while on the border of the hole and the container 111 is the stop 13 and the groove 10.

A hollow tubular sleeve 20 includes a sleeve 21 and a pre-made on the sleeve 21 of the sealing element 22, is placed inside the injector 10 from the side openings of the container 111 opposite the holes 121 to provide an elastic airtight seal. The sleeve 21 consists of an outer sleeve 23 made of a firm plastic (for example, from a material PP) and an elastic element (e.g., rubber)mounted inside the outer sleeve 23. The outer sleeve 23 is equipped with a flange 231, which abuts against the stop 13; tube 232 protrudes from one side of the flange 231; outer surface 233 surrounds the axis L and mates with the flange 231; opposite the outer surface 233 is located the inner surface 234. The flange 231 is equipped with radial channels 235 and the supports 236 between channels 235. The inner sleeve 24 provides a smooth flow through the channel 235, while the airtight sealing element 22 extends inside together with the inner annular surface 241 surrounding the axis L. the Inner annular surface formed by the lower sleeve 242, mating with the container 111 and protruding in the direction of the axis L, the upper sleeve 243, opposite the lower sleeve 242, also serving in the direction of the axis L, and the container is am 244, located between the lower and upper bushings 242, 243 away from the axis L, and a shoulder 245 on the border of the lower sleeve 242 and the container 244 together with the tapered guide 246 mating with the container 111 and placed on one side of the lower sleeve 242. The sealing element 22 is made of an elastic material such as rubber, is molded directly in the flange 231 of the outer sleeve 23, thus providing an excellent connection flange 231 and the inner sleeve 24 by means of the channel 235 (see Fig.7) and is provided with a fixed connection sleeve 24 by means of a support 236. Meanwhile, the outer ring may be placed on the outer surface 233, while the inner ring is connected with the inner sleeve 24, and the outer diameter D of the sealing element 22 is larger than the diameter of the outer surface 233 of the respective outer sleeve 23.

The site of the needle 30 comprises the base of the needle 31, the needle body 32 that is installed inside the base of the needle 31, and the cap 33 to the base of the needle 31 and the needle body 32. In addition, the outside of the tube 232 is made resistant ring 312, which can be used as a stop for the cap 33, the base of the needle 31 is equipped with a connecting box 311, which can be inserted into the hole 121 and form a plug connection 331 inside the container 233 by passing through the second sleeve 243.

Part of the push rod 40, which in the have in the container 111 inside the injector 10, includes a working shaft 41, a piston 42 mounted on the shaft 41 and forming an air-tight connection with the container 111 and the protrusion 43, which is located on the outer side (toward the piston 42) and can be captured by the container 244, after he goes through the first sleeve 242. The minimum outer diameter of the protrusion is larger than the inner diameter of the lower sleeve 242. And thanks to the properties of the material of the inner liner 24 of the protrusion 43 can form a reliable connection with the sleeve 20 after it passes through the first sleeve 242.

As shown in Fig.7, during Assembly, first insert coupling insert node 311 of the needle into the hole of the round pipe 232 of the sleeve 20, and provides a smooth passage for connecting the insert 311 through the second sleeve 243, using the properties of the material of the inner liner 24, providing, thus, the connection node of the needle with the sleeve 20. Then the sleeve 20 and the needle 30 with the cap inserted into the hole of the container 111 and subsequently in the injector 10 for centering the needle body 32 and the cap 33 of the hole 121. When the sealing element 22 is inserted into the groove 14, and the flange 231 abuts against the stop 13, the sleeve 20 and the site of the needle 30 can be placed inside the injector 10. Finally, the Assembly can be completed, when one end of the push rod 40 with the piston 42 and the protrusion 43 is included in the container 111 which C is Kanivets sealing element 22 and the sleeve 21.

As shown in Fig when the injector after the injection must be handed in for recycling, the operator needs only to push the push rod 40 to the inside of the injector 10, and the protrusion can smoothly pass through the first sleeve 242 to the container 244, using the properties of the material of the inner liner 24, providing, thus, the connection of the push rod 40 and the sleeve 20. As shown in Fig.9, when the pulling rod 40 to the outside of the injector 10, the push rod 40 engages the sleeve 20 and the site of the needle 30 to the inside of the injector 10 as long as the body of the needle 32 and the cap 33 is not hidden inside the injector. In this case, you can break the push rod 40, no harm to personnel.

As shown in figure 10, on the inner surface of the ring 241' of the inner sleeve 24' of the sleeve 20' on the border between the lower sleeve 242' and the container 244' is made inclined shoulder 245'. In the bottom of the sleeve 242' is made an inclined hole 247'around an inclined axis L', the inclination of which to the axis L is about 20° and which runs at right angles to the inclined shoulder 245'. As shown in figure 11, when the push rod 40 forms a connection with the sleeve 20' by means of the protrusion 43, the configuration of the inclined holes 247' can provide unilateral compression of the protrusion 43 of the inner sleeve 24' inside. Meanwhile, with the sealing element 22' of the injector 10 of the original the social pressure one-way compression can be reset, when the push rod 40 extends outward from the injector 10 by first removing the cap). And thanks to the properties of the material of the inner sleeve 24' and the presence of inclined holes 247' and inclined plocica 245' maximum shift can occur when the sleeve 20' and the needle body 32' is inserted into the injector 10 (in this case, the inclined hole 247' can be deformed by the protrusion 43 as a result of compression). Finally, once the needle body 32 abuts against the stop 13, the push rod 40 is broken, thus avoiding a possible extension of the body of the needle 32.

As shown in Fig-13, safe syringe according to the fourth preferred variant implementation of the present invention also includes the injector 10, a sleeve 20, which is installed inside the injector 10, the sealing element 22, which provides an airtight seal, the site of the needle 30 is screwed into the sleeve 20, and a movable push rod 40 within the injector 10, the injector 10 and the push rod 40 have the same structure as in the third example. The following describes the features of the sleeve 20 and the site of the needle 30.

The difference is that the sealing element 22 has internal threads 217 within the sleeve 21 and the lower sleeve 216. Thus, the base of the needle 31, provided with an external thread 311 may be placed inside thread 217 sealing element 22, while the lower sleeve 216 may be used on the I formation of the connection protrusion 43 with the push rod 40.

As shown in Fig, safe syringe according to the fifth preferred variant implementation of the present invention also includes the injector 10", sleeve 20", mounted inside the injector 10, the site of the needle screwed into the sleeve 20 and the movable push rod 40" inside the injector 10", and the injector 10 and the push rod 40 have the same structure as in the third example. The following describes the features of the sleeve 20 and the body of the needle 30".

The sleeve 20 includes a sleeve 21", previously executed by the sleeve 21" sealing element 22 and the fixed base of the needle 25". The sleeve 21" consists of the outer sleeve 23", made of solid plastic, and elastic inner liner 24"mounted inside the outer sleeve 23". The outer sleeve 23 consists of a flange 231", resting against a stop 13", round tube of smaller diameter 232"beyond flange 231", the outer surface 233"surrounding the axis L and the corresponding flange 231", as well as the inner surface 234 opposite the outer surface 233". The flange 231" pre-installed with some radial channels 235", while the inner sleeve 24 has an inner annular surface 241"surrounding the axis L. the Inner annular surface formed by the sleeve 242"mating with the container 111 and protruding in the direction of the axis L, the container 244" both sides of the sleeve 242", located away from the axis L. Made of rubber sealing element 22" is molded directly into the channel 235", forming an airtight seal. In addition, the outer ring may be placed on the outer annular surface 233", while the inner ring is combined with the inner sleeve 24, and the outer diameter D of the sealing element 22" larger than the diameter of the outer annular surface 233, which corresponds to the outer sleeve 23".

The body of the needle 30 is directly attached to the base of the needle 25" sleeve 20 and protrudes outside of the injector 10".

So the structure of the device according to the fifth preferred variant implementation of the present invention includes a sleeve 21", the sealing element 22 and the base of the needle 25", which minimizes the number of structural elements and discomfort during manufacturing and Assembly. The Assembly is done by setting the body of the needle 30 in the base of the needle 25". For comparison: existing syringe can be tted only after rotation of the base of the needle and sleeve, and the present invention, which proposes to reduce the number of parts may actually simplify the build process.

The syringe shown in Fig similar to the syringe according to the fifth preferred variant implementation of the present invention, inner sleeve 54 and the inner annular surface 541 of the sleeve 50 t is the train is equipped with a sloped shoulder 545 between the sleeve 542 and container 544. Sleeve 542 is performed with a sloped hole 547 around an inclined axis L, which runs at right angles to the inclined shoulder 545. When the sleeve 50 and the body of the needle 60 can be moved in the injector, the body of the needle 60 is removed inside guaranteed (as figure 11).

On Fig shown universal design, which includes a piston 42 of the push rod 40, pre-formed directly from one end of the push rod 40, where reliability is made round convex edge 421.

In the end, secure the syringe in a preferred variant implementation of the present invention has the following advantages:

1. The two joint elements: a sealing element 22 and the sleeve 21 together form the sleeve, providing ease of manufacture and Assembly of simplified construction. Thanks to the properties of the elastic sealing element 22, the protrusion 43 and the connecting box 311 can smoothly be installed and securely fastened.

2. Executed as a single unit sealing element 22 and the sleeve 21 can be manufactured using only one machine without additional assemblies, providing, thus, cost savings.

3. Don't need any mechanical, manual Assembly, because to increase the profitability of the sealing element 22 pre-molded directly on the sleeve 21. In addition, PR is the property of the molded structures are that the sealing element 22 does not drop, which increases the efficiency by reducing the proportion of defects and downtime.

4. When assembling, first connect the sleeve 20 and the site of the needle 30 and then install the injector 10. This process is performed easily and quickly, which significantly improves the performance of the Assembly.

5. The number of structural elements can be minimized, since the sealing element 22 pre-molded directly on the sleeve 21. And thanks to the properties of the material of the inner liner 24 for projection 43 does not need any crack. In fact, the Assembly can be performed by the same machine.

6. The outer sleeve 23 and bearing 236, material of PP, can be used to support the inner liner 24 and the sealing element 22 made of rubber, which provides a reliable connection and retraction, when the protrusion 43 of the push rod 40 is inserted into the sleeve 20.

Thus, secure the syringe of the present invention consists of a flexible sealing element and the sleeve, providing, thus, airtightness and simplifying the Assembly and improving productivity, increasing profitability.

1. Safe syringe that includes an injector in the form of a tube with a hole in the center, forming the inner container, the push rod, which is inserted in to the container of injector piston with the tab, a sleeve with a hollow sleeve, which can be captured by the hole of the injector, with the sleeve fitted top plug connection and the lower sleeve, made in its cavity so that the base of the needle is equipped with a connecting insert, forming the upper plug connection, and the lower sleeve provides the connection with the guide rod, the site of the needle consists of a base of the needle body and the needle, with the base of the needle is mounted outside of the liner sleeve, characterized in that the sealing element is made of an elastic material, is formed beforehand on the liner sleeve, and includes an outer section, which is formed on the outside of the sleeve and forms an airtight connection with the inner wall of the container injector.

2. Safe syringe according to claim 1, characterized in that between the lower sleeve and the cavity mentioned sleeve is inclined shoulder.

3. Safe syringe according to claim 1, characterized in that the said piston rod pre-molded directly from one end of the push rod.

4. Safe syringe that includes an injector in the form of a tube with a hole in the center, forming the inner container, the push rod, which is inserted into the container of injector piston with the tab; a sleeve with a hollow sleeve, which can be captured by the hole of the injector, when the volume sleeve fitted top plug connection, educated in the cavity, the site of the needle consists of a base of the needle body and the needle, with the base of the needle is provided with a connector insert for education upper detachable connection of the sleeve, wherein the sealing element is made of an elastic material, is formed beforehand on the liner sleeve, and includes an outer section, which is formed on the outside of the sleeve and forms an airtight connection with the inner wall of the container to the injector, while the sealing element is provided with a lower sleeve inside sleeve for education detachable connections with the protrusion of the push rod.

5. Safe syringe according to claim 4, characterized in that between the lower sleeve and the cavity mentioned sleeve is inclined shoulder.

6. Safe syringe according to claim 4, characterized in that the said piston rod pre-molded directly from one end of the push rod.

7. Safe syringe that includes an injector in the form of a tube with a hole in the center, forming the inner container, the push rod, which is inserted into the container of injector piston with the tab, a sleeve with a hollow sleeve, which can be captured by the hole of the injector, the site of the needle consists of a base of the needle body and the needle, with the base of the needle is mounted outside of the liner sleeve, characterized in that uplo the catch element, made from elastic material, is formed beforehand on the liner sleeve, and includes an outer section, which is formed on the outside of the sleeve and forms an airtight connection with the inner wall of the container to the injector, while the sealing element within a sleeve provided with upper and lower bushings, and the base of the needle is equipped with a connecting insert, forming the upper plug connection, and the lower sleeve provides the connection with the guide rod.

8. Safe syringe according to claim 7, characterized in that the inclined shoulder is placed between the lower sleeve and the cavity mentioned sleeve.

9. Safe syringe according to claim 7, characterized in that the said piston rod pre-molded directly from one end of the push rod.

10. Safe syringe that includes an injector in the form of a tube with a hole in the center, forming the inner container, the push rod, which is inserted into the container of injector piston with the tab, a sleeve with a hollow sleeve, which can be captured by the hole of the injector, the site of the needle consists of a base of the needle body and the needle, with the base of the needle is mounted outside of the liner sleeve, wherein the sealing element is made of an elastic material, is formed beforehand on the liner sleeve, and includes an outer shall chastek, which is formed on the outside of the sleeve and forms an airtight connection with the inner wall of the container to the injector, while the sealing element has an internal threaded section, and forms a lower bushing within the sleeve, and the base of the needle is equipped with an external threaded section to form a connection with an external threaded section, and the lower sleeve provides the connection with the guide rod.

11. Safe syringe of claim 10, characterized in that between the lower sleeve and the cavity mentioned sleeve is inclined shoulder.

12. Safe syringe of claim 10, characterized in that the said piston rod pre-molded directly from one end of the push rod.

13. Safe syringe that includes an injector in the form of a tube with a hole in the center, forming the inner container, the push rod, which is inserted into the container of injector piston with the tab, a sleeve with a hollow sleeve, which can be captured by the hole of the injector, the site of the needle consists of a base of the needle body and the needle, with the base of the needle is mounted outside of the liner sleeve, wherein the sealing element is made of an elastic material, is formed beforehand on the liner sleeve, and includes an outer section, which is formed on the outside of the sleeve and forms the air is pronicheva connection with the inner wall of the container of the injector, this sealing element is provided with a lower sleeve inside sleeve for the formation of compounds with the protrusion of the push rod.

14. Safe syringe according to item 13, characterized in that between the lower sleeve and the cavity mentioned sleeve is inclined shoulder.

15. Safe syringe according to item 13, characterized in that the said piston rod pre-molded directly from one end of the push rod.



 

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2 dwg

FIELD: medicine.

SUBSTANCE: protection unit for needle can be used in medical and surgical instruments. Protection unit has protection aids which interact with needle through sliding. Protection aids have to be combination of, at least, safety providing aids, on one hand, and blocking aids, on the other hand. Safety providing aids have at least one item which upon finishing of movement of needle at backward direction through protective aids, is placed in front of tip of the needle to prevent repeat usage of the same needle. Blocking aids work together with safety providing aids and at the moment when protection unit changes from non-working state to working one, they release safety providing aids which move from blocked position to their unblocked position. According to the other version, protection aids have to be one or several safety tongues which upon finishing movement of needle in backward direction are automatically disposed in front of needle's tip to prevent repeat usage of the same needle. Mentioned tongues keep their distance from the needle till whole pass of the needle is finished when it moves backward. According to the third version, protection unit has ring-scraper to interact with needle. Ring-scraper is disposed inside case at preset distance from back side of back wall of the case.

EFFECT: reduced probability of contact with different fluids extracted from patient's body; prevention of random punching; small size; easiness at usage; simplified design.

20 cl, 13 dwg

Disposable syringe // 2268756

FIELD: medical engineering; medical instrumentation.

SUBSTANCE: proposed disposable syringe has body with rod and piston. Body has hole for receiving needle and bore. Piston has recess which prevents it from escaping from bore.

EFFECT: enhanced reliability.

2 dwg

Disposable syringe // 2254879

FIELD: medicinal equipment, in particular, disposable syringes for single injection of medicinal preparation, may be used in medicinal enterprises and private clinics.

SUBSTANCE: disposable syringe has hollow cylinder, rod with handle, common piston and destroyable piston, and is further equipped with needle. Common piston is positioned at rod end with handle. Destroyable piston has conical central slot arranged at side adjoining common piston and whiskers loosely passed through openings in common piston and fused at their ends shaped as balls and adapted for maintaining gap between pistons upon extending of rod. Common piston is provided with conical central protrusion, into which micro needle is built. Micro needle is adapted for puncturing thinnest part of destroyable piston, when the latter is biased by common piston during injection provided by tight joining of congruent conical surfaces in central portions of pistons. Protrusions formed at rod end adjoining handle abut against cylinder base at the initial position of rod and are adapted for preventing destroyable piston from puncturing until medicinal preparation is drawn into syringe. Upon single injection of medicinal preparation, syringe loses its air-tightness at side adjoining destroyable piston and may not be further used.

EFFECT: simplified construction and provision for impossibility of repeated usage of syringe.

2 dwg

The invention relates to the field of medicine and medical technology and is intended for introduction of one or more implants

FIELD: medicine.

SUBSTANCE: initially skin area is chosen for anaesthesia. Then ultrasonic sensor is applied, and various skin areas are periodically pressed by finger, thus observing wavy changes of tissue structure under pressing on the screen. Place chosen for injection is that where deformation wave most precisely reaches chosen area. Further distance to chosen area from skin surface is measured with following tissue puncture with long injection needle on this depth with preliminary introduction of novocaine in amount 1-1.5 ml. Localization of medicinal infiltrate appearing in tissues is visualised, and if infiltrate created by novocaine injection is resolves within no more than 1.5 minutes, this area is intermittently introduced with medicinal agent dosed 1 ml under ultrasonic control of every introduction accuracy and infiltrate resolution intensity. Next portion of medicine is introduced after complete infiltrate resolution, created by last portion. In case infiltrate is intact within 3 minutes medical product introduction is stopped, and in medicinal infiltrate is introduced with 10 ml of novocaine solution.

EFFECT: prevention of postinjective complications owing to area selection accuracy.

1 ex

FIELD: medicine.

SUBSTANCE: invention can be applied for intra-arterial injection of medicinal agent solutions within emergency cases. Syringe for intra-arterial injection consists of supported rod and piston inside of hollow transparent cylinder bottom of which is furnished with holed cap to connect to injection needle. Piston has transparent hollow open from side of free end by means of protruding capillary tube with piston and pusher. Pusher support is designed as red star-shaped disk and hollow balloon with elastic walls fixed on opposite wall of hollow.

EFFECT: provided accurate control of injection needle tip position inside of artery within the whole injection process.

1 dwg

FIELD: medicine.

SUBSTANCE: method involves making sclera pierce with injection needle 3-4 mm far from limb and then proceeding along vitreous body periphery towards epiretinal space. Collalysinum is introduced through the injection needle at a single dose of 2-10 CU directly into fibrous tissue or pouring over it. Severe fibrous transformations being the case, Collalysinum is introduced through needle bent at an angle of 30-40° with epiretinal membrane being mechanically separated or schwartotomy being concurrently done with needle tip.

EFFECT: enhanced effectiveness of treatment; minimized vitreous body injury; increased bioavailability of the preparation; accelerated treatment course.

4 dwg

FIELD: medicine; medical engineering.

SUBSTANCE: method involves setting syringe body in horizontal position with additional end piece turned upward. Sealing caps are taken off from the principal and additional end pieces. Space is opened between syringe body and sealing member on the piston. The piston is moved into utmost position near tip for introducing gas. Additional rod is returned to initial position and syringe body is set in vertical position with the end piece turned down. Dosed volume of liquid drug is taken to graduation line. The principal and additional end pieces are tightly closed with cap. The syringe body is set in vertical position with the end piece turned down before usage. Space is opened between syringe body and sealing member on the piston by rotating the additional rod. The piston is displaced to dosed mark taking into account the line connecting the principal and additional graduation line. The additional rod is returned to the initial position. The liquid drug is mixed w the gas substance during 15 min. Then, sealing cap is taken off from the end piece. Needle is put on. Gas substance not mixed with the liquid drug is removed by displacing piston to dosed mark along liquid drug graduation mark.

EFFECT: reduced risk of traumatic complications.

3 cl, 2 dwg

FIELD: medicine; surgery, nephrology; neurology; clinical pharmacology.

SUBSTANCE: method can be used at injection introductions of medicinal aids into deep layers of soft tissues of lumbar area. Ultrasonic detector is applied to selected area. Area to be found in depth of tissues is detected by means of device on the screen. Different areas of skin are subject to periodical pressing by finger and appearance of wave-shaped reversible changes in skin is observed on screen under point of pressing. Part of skin is marked for injection introduction from which part the deformation wave reaches selected area more precise. Distance from skin to the area is measured and needle is introduced for the depth. 1-1,5 ml of solution is pressed out of syringe. Correctness of introduction is estimated from ultrasonic visualization of localization point which appears in tissues of medicinal infiltrate. Procedure is repeated till correct introduction is performed and that the required medicinal solutions are introduced.

EFFECT: improved precision; prevention of complications.

1 ex

FIELD: medicine, in particular, equipment for injections and for taking blood or other liquids from organism, which may be also used in laboratories and enterprises in different branches of industry requiring usage of syringes for injecting liquids.

SUBSTANCE: syringe has first part made in the form of cylinder and equipped with first front end including inlet and outlet for liquid and second open end, and second part comprising stem equipped at its front end with piston and at its rear end stop, said second part being positioned for moving between first position wherein stem piston is located at site proximate front end of first part, and second position wherein stem piston is located at site distal from front end of first part. Second part also comprises pusher whose rear end has supporting surface adapted for applying pressure in first axial direction to move second part from second position to first position. First part has at its second end supporting member protruding transverse to first part and made integral therewith. Supporting member has first supporting surface for applying pressure in second axial direction opposite to first axial direction for moving second part from second position to first position, and rear supporting surface for applying pressure in said first axial direction to move second part from first position to second position. Pusher has at its front end two protruding members joined to stem through connecting links so as to define window restricted with stem stop, supporting member of first part, protruding members and rear end of pusher. Protruding members at front end of pusher are terminated with two supporting surfaces for applying pressure in second axial direction to move second part from first position to second position. First part has at least two longitudinal grooves extending from second end of first part to front end and adapted for accommodation of connecting links of pusher. Supporting member of first part has through opening shaped to provide for axial passage of protruding members.

EFFECT: convenient use owing to providing suction and liquid introduction steps for single operation.

17 cl, 7 dwg

Syringe-container // 2264231

FIELD: medical equipment, in particular, devices for injections, formed as syringes containing medicinal substances.

SUBSTANCE: apparatus is formed as syringe with hermetically sealed reservoirs containing different substances, piston mechanism including piston chamber, piston and piston stem. Chamber clearance with continuous internal surface is formed as successively arranged reservoirs or sectors with different diameters or sections, with one of reservoirs being formed as piston cylinder. Piston chambers are hermetically separated within piston chamber clearance further than line of transition of smaller diameter or other section by movable device.

EFFECT: simplified construction.

2 cl, 5 dwg

Safety syringe // 2255768

FIELD: medicinal equipment, in particular, safety syringes.

SUBSTANCE: safety syringe has cylinder with axial through opening, retainer provided within front end of cylinder, piston, needle hub, and needle. Piston positioned for sliding inside cylinder is equipped with sealing rubber member, head and flange disposed on piston in opposed relation to head. Needle hub is detachably engaged with cylinder and is provided with axial opening corresponding to that of cylinder and communicated therewith, and feeding opening adapted for communication with axial openings of needle hub and cylinder and for providing insertion of piston head. Needle has sleeve engaged with front head part of needle hub, and metal pipe engaged with sleeve. Piston has neck portion defined at its front end and arranged so that rubber sealing member tightly adheres thereto, and spatially inclined teeth. Head is made conical. Needle hub has conical front end with protrusions mating with cylinder retaining device upon rotation of cylinder. Slots are provided for engagement with inclined teeth. Bead provided in peripheral portion of feeding opening is mating with piston conical head. Protrusions are released from finger clamps upon rotation, when inclined teeth are engaged with slots.

EFFECT: simplified construction and convenient use.

4 cl, 12 dwg

FIELD: medical engineering.

SUBSTANCE: device has sealed reservoirs, containing substances, and piston mechanism, having piston cylinder, piston and piston rod. Device for moving liquid between the reservoirs is mounted in piston cylinder lumen. The device has separating piston and compression unit arranged in series. The unit designed as casing or carcass is mounted in projection of its external cylindrical part along the perimeter. Hollow internal lumen of has exit to piston projection inward from its external perimeter. The separating piston makes two connections with the piston cylinder and compression unit at the same time. The separating piston is movable into compression unit lumen with compression or change in shape taking place at the same time. The compression unit allows to make communication between reservoirs.

EFFECT: simplified design.

5 cl, 8 dwg

The invention relates to medical equipment, namely, devices for injection in a syringe with drug substance

FIELD: medical engineering.

SUBSTANCE: device has sealed reservoirs, containing substances, and piston mechanism, having piston cylinder, piston and piston rod. Device for moving liquid between the reservoirs is mounted in piston cylinder lumen. The device has separating piston and compression unit arranged in series. The unit designed as casing or carcass is mounted in projection of its external cylindrical part along the perimeter. Hollow internal lumen of has exit to piston projection inward from its external perimeter. The separating piston makes two connections with the piston cylinder and compression unit at the same time. The separating piston is movable into compression unit lumen with compression or change in shape taking place at the same time. The compression unit allows to make communication between reservoirs.

EFFECT: simplified design.

5 cl, 8 dwg

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