Needle-protection device for medical instruments

FIELD: medicine.

SUBSTANCE: device is movably located on the needle and contains the first part and the second part. At that, the said first part comprises a base section, a middle section and an upper section forming the first lever; and the said second part comprises a base section, a middle section and an upper section forming a bent second lever. The said base section of this first part and this second part is configured to remain in a retaining relationship with the inner periphery of the catheter housing of the said catheter node IV prior to use.

EFFECT: improved protection against accidental pricks with the needle tip.

16 cl, 7 dwg



Same patents:

Catheter device // 2549312

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to catheter device. Catheter device contains catheter tube, catheter connector, needle, which has needle rod, needle tip and needle connector, as well as needle guard. Needle rod has distal part and proximal part. At least proximal part has main external contour. Extension is provided on needle rod between distal part and proximal part. Needle guard has main part, first and second deviations and distant wall. Main part is made from first material and has channel for needle, passing in axial direction from proximal side of main part through main art to distal side of main part for mobile incorporation of needle rod. Maximal size of section of channel for needle is smaller than maximal size of needle extension. First and second deviations pass in fact in axial direction from distal side of main part. First deviation has distal part and proximal part and distal wall, located transversally on distal part of first deviation. Rigid locking element, made from second material, different from first material, is located in needle guide. Lock element has disc-like shape with through hole of constant diameter, size of which is larger than main diameter of proximal part of needle rod and is smaller than maximal size of said extension.

EFFECT: protection of catheter device against external effort of pressing on needle and prevention of complete removal of needle from guide, when effort for separation of guide is applied, with simultaneous provision of smooth sliding of needle guide along needle rod.

10 cl, 6 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to medical drug delivery devices, and in specific embodiments - to drug injectors configured for the percutaneous administration of a pre-set amount of a medical drug. A drug delivery system comprises two drug injectors. The first injector comprises the first main body and the first cap. The first main body comprises the first type-one drug container, the first drug outlet and the first drug ejector unit from the first container through the first outlet. The first cap is configured to be detachably mounted on the first main body to cover the first drug outlet, and provided with the first label identifiable by the user and standing for the first type of the drug. The second drug injector comprises the second main body and the second cap. The second main body comprises the second type-two drug container, the second drug outlet and the second drug ejector from the second container through the second outlet. The second cap is configured to be detachably mounted on the second main body to cover the second drug outlet, and provided with the second label identifiable by the user and standing for the second type of the drug.. The cap and main body of each drug injector are provided with a pair of mutually coupled key structures preventing the first cap from mounting on the second main body and the second cap from mounting on the first main body. The drug injectors being parts of the drug delivery system are based on the same technological platform, so they contain at least 50% interchangeable parts.

EFFECT: invention simply and effectively reduces a probability of a false drug choice by the user.

10 cl, 5 dwg

FIELD: medicine.

SUBSTANCE: group of inventions refers to medical equipment, namely to injection needle assemblies and to drug injection devices. The injection needle assembly comprises a needle tube, a needle sleeve and an elastic member. The needle tube has a needle point for skin needling. The needle sleeve comprises the first member that retains the needle tube, and the second member, wherein a syringe outlet is inserted. The elastic member is integrated inside the second member to create a liquid-tight close contact with the inner surface of the second member. The elastic member has an insert opening, wherein the needle tube is inserted. The elastic member has a stop surface which leans against a distal end of the syringe outlet. The elastic member has an end surface which is opposed to the stop surface and a spaced surface on the side of the end surface, which forms the insert opening on the end surface and which is spaced from an outer peripheral surface of the needle tube. According to the second version of the injection needle assembly, the elastic member has a flange portion clamped between the first member and second member. According to the third version of the injection needle assembly, the elastic member is provided with a portion of a valve member on the side of the needle, which is pressed to the outer peripheral surface of the needle tube under pressure exerted by the liquid drug released from the syringe outlet. A drug injection device comprises a syringe having the outlet and injection needle assembly configured in accordance with any of the above versions.

EFFECT: invention reduces a post-injection amount of the drug when using the structure, wherein the fine adjustment of the main end of the needle tube in relation to the needle sleeve is not necessary.

47 cl, 9 dwg, 1 tbl

FIELD: medicine.

SUBSTANCE: scalp is incised. That is followed by subperiosteal endoscopic separation of a forehead flap. Supraorbital and trochlear nerves are separated. The periosteum is transected. The forehead flap is separated and the nerves are separated by means of upward tractions of a raspatory. A cutting edge of the raspatory faces a frontal bone. The forearm flap is elevated at a distance big enough to elevate the eyebrows to an elevation limit marked intraoperatively by injection needles at 90 along the preoperative skin marks. The flap is fixed.

EFFECT: method enables avoiding nervous injuries, reducing number of injuries and timing of surgery by means of the raspatory, which is the only surgical instrument, provides achieving the desired eyebrow elevation angle precisely owing to the injection needle marks.

8 dwg, 1 ex

Injector and device // 2539991

FIELD: medicine.

SUBSTANCE: needle unit for subcutaneous injections comprises a number of needles and a connector, which can connect the above number of needles and a pressure injector element. Each of the needles has a passage configured to enable a therapeutic material flowing through it, and a tube comprising the number of openings along the needle tube, and having a closed end.

EFFECT: improved fixation of the delivered substance by generating a pressure required to load cells with a disturbed permeability of cell walls.

14 cl, 3 tbl, 35 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to urology, and can be used in treating urethral stricture. To this effect, a urethra bougienage is followed by introducing a stromal-vascular cell fracture of patient's fat in the number of thirty million into the sclerotic portion.

EFFECT: method provides the relevant minimally invasive treatment of the urethral strictures covering a pathogenetic unit of the cicatrical tissue formation.

1 ex, 1 tbl

FIELD: medicine.

SUBSTANCE: composition of 5,10,15,20-tetrakis(N-methyl-3'-pyridyl)chlorine and 5,10,15,20-tetrakis(N-methyl-3'-pyridyl)bacteriochlorine is administered into a tumour tissue as a photosensitiser in an amount of 0.5-10mg per 1g of tumour tissue depending on a degree of tumour differentiation. The laser exposure starts 20-40 minutes later at wave length 760-762 nm. The cytological examination follows 6-7 days later, and if observing signs of persistent tumour growth, the presented therapeutic session is repeated.

EFFECT: gradual depression of the malignant tumour tissue up to the complete elimination of its cell and structural abnormalities, lower rate of metastasis or progression prevention that makes it possible to avoid surgical intervention in some cases.

4 cl, 3 dwg, 3 ex

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to syringes with a retractable needle. A syringe comprises a cylinder, a needle assembly, a needle assembly holder at one end of the cylinder, a hollow piston, a cutting crown at the end of the piston and a drive mechanism for the needle assembly retraction into the piston. The needle assembly comprises a needle, an inner space of which is hydraulically connected to the chamber inside the cylinder. The hollow piston is movable inside the cylinder towards the needle assembly. The cutting crown faces the needle assembly and aims at cutting the holder, as the piston advances so that the drive mechanism retracts the needle assembly into the cylinder. The cutting crown profile comprises at least two cutting teeth, which cuts off the first part of the holder, before the other parts of the cutting crown cut off the other parts of the holder; at least two cutting teeth in the gap between the two following cutting teeth along the cutting edge have U-bridges.

EFFECT: using the invention enables providing simplifying the structure, reducing a dead area inside the syringe, cutting the production costs, preventing an air bubble pocket, protecting against the re-use and reducing the holder detachment force applied by the user.

9 cl, 9 dwg

Catheter device // 2533844

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to catheter devices, particularly used for facilitating the insertion and installation of a catheter or other medical device into a patient's vein (vessel). The catheter device comprises a catheter, a catheter sleeve, a needle, a needle sleeve and a needle cap. The catheter sleeve has an outer surface and an inner surface, a distal portion and a proximal portion. The distal portion is connected to the catheter. The proximal portion encloses a chamber. The needle passes through the catheter sleeve and the catheter and senses the axial direction. The needle has opposite proximal and distal ends. The distal end forms a needle tip. The needle sleeve is connected to the proximal end of the needle. The needle cap is attached to the needle and configured to slide thereon. The needle cap is retained in the chamber of the catheter sleeve by a holding arm catching the outer portion of the catheter sleeve, as the needle passes through the catheter sleeve and catheter. The needle tip is removed from the catheter sleeve, after the needle tip penetrates into the needle cap after the needle is removed from the catheter. The holding arm extends other than in parallel to the axial direction, and particularly forms an angle falling within the range of 0 to 10 with the axial direction, particularly such that a clearance between the arm and the catheter sleeve tapers off towards a distal end of the holding arm.

EFFECT: invention is characterised by the low production cost and at the same time affords a reliable protection against stabbing by the needle after removed from the catheter and the catheter sleeve.

21 cl, 6 dwg

FIELD: medicine.

SUBSTANCE: self-destroying insulin syringe includes a barrel, a push rod, a rubber piston and a needle saddle. The push rod has a front end connected to a tapered boss by a latching core. The needle saddle is detachably connected to the front end of the barrel and comprises a needle bushing for the needle insertion. Between the needle bushing and the needle saddle, there is a water-permeable flexible round O-ring. The needle bushing extends downwards to form a retaining ring and has an annular projection in the retaining ring. The annular ring comprises a needle hole. The barrel comprises a saddle for the needle attachment interacting with the needle bushing. The saddle for the needle attachment is provided with a hole for an injection solution; it rests against and is fixed to a front end of the barrel by means of a support saddle. An upper end of the saddle for the needle attachment comprises a lock ring which penetrates into the retaining ring hole and is latched with the retaining ring. An inner wall of the retaining ring conically seats on an outer wall of the lock ring. When the lock ring connects to the retaining ring, the lock ring hole squeezes the annular projection inside.

EFFECT: invention enables changing the needles with various characteristics for medical indications and drawing the needles into the barrel upon completion of the injection.

2 cl, 15 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

FIELD: medical engineering.

SUBSTANCE: device has chamber for holding needle. The chamber is set in motion with a handle does not allow the needle to be drawn-out from the syringe. The device has elongated hollow cylinder, retractable needle, movable pieces and compulsory-locking structural unit. The elongated hollow cylinder has frontal end and open rear part. The retractable needle is pulled-in by means of drawing-in structural unit mounted on the frontal syringe cylinder end. The needle is displaceable when being drawn-back. Movable parts have a handle attached to the chamber holding the needle. The movable parts are sealed, sliding and movable in the syringe cylinder by means of the handle going-out from the open rear syringe part. The chamber for holding needle has opening corked orifice in the frontal part for receiving the retractable needle. The needle is pullable into the chamber fro holding the needle when moving the chamber forward to the drawing-in structural unit as a response to handle displacement after finishing injection. The compulsory-locking structural unit is mounted inside the syringe cylinder and restricts return movement of the chamber holding the needle for preventing its being drawn-out from the syringe cylinder after its single use. The retractable needle is safely enclosed in the chamber for holding the needle inside the syringe not allowing its being drawn-out by operating the handle or by pulling the handle.

EFFECT: high safety level; impossible repeated application irrespectively of the needle being drawn-in or not.

34 cl, 19 dwg

FIELD: medical engineering.

SUBSTANCE: injection needle kit has needle cannula and bushing. The cannula has cavity taking the space from distal end, piercing skin, to opposite proximal end along the longitudinal axis of said needle cannula. The longitudinal cavity is cylindrical having essentially constant diameter all along the needle cannula. The cannula has the first elongated portion shaped as narrowing cone from outside at least on some length part to the distal end, piercing skin. The needle cannula has the second elongated portion of external diameter equal to or greater than the first elongated portion maximum diameter. The bushing has base and ring-shaped sleeve going from the base. The end sleeve has fastening member detachable from the bushing on syringe. The needle cannula is fixed on the base in a way that the first elongated portion projects from the base outward from the sleeve and the second elongated portion projects in the opposite direction. The sleeve envelops the second elongated portion at least partially.

EFFECT: reduced pain caused by injection; higher bending resistance.

8 cl, 7 dwg

Disposable syringe // 2289431

FIELD: medical equipment, in particular, disposable syringes unfit for repeated usage due to employment of automatically retractable needle.

SUBSTANCE: syringe has outer cylinder with first and second ends, inner cylinder longitudinally sliding within outer cylinder and adapted for fastening needle at its one end, said needle protruding through opening provided in first end of outer cylinder and communicating with inner cylinder reservoir, and piston located within said reservoir and actuated for drawing in and ejecting of liquid through needle into and outside said reservoir. Piston is connected to driven stem extending from other end of inner cylinder and second end of outer cylinder. Outer cylinder has holder placed on inner surface of its wall. Inner cylinder has locking device for engagement with holder and retention of inner cylinder in one of two retaining positions with respect to outer cylinder. In first retaining position needle protrudes from outer cylinder and is in state fit for usage, and in second retaining position needle is fully retracted into outer cylinder. Device for moving inner cylinder toward second retaining position and driven stem of piston are provided with means for bringing into contact with locking device, when piston is fully retracted into outer cylinder, for decoupling of locking device from holder to thereby bring locking device into constant engagement with holder. End retainer is provided on driven stem for preventing piston from full retraction and for releasing locking device from holder, upon primary actuation of piston, and for allowing piston to be moved inward by distance sufficient for releasing of locking device during next retraction of piston. Syringe of such construction does not need any actions which should be performed by user for disabling repeated employment of syringe in the future and early retraction of needle.

EFFECT: enhanced reliability in operation and increased efficiency.

11 cl, 14 dwg

FIELD: medical equipment.

SUBSTANCE: device has tube inside which tube the two engines or gear wheel are built in. Gear wheel is rotated by gear blade. Gear wheel brings gears in motion, which gears begin to rotate rigid junctions. Device also has channel for withdrawal of gases emanating during melting of needles; ventilation or any other kind of forced ventilation is not used for the purpose. Device is provided with one more tube, in which tube the needle is unscrewed and needle is destroyed subsequently. Device has telescopic container, intended for storage of products of utilization of needles, and card-board container, which is installed into receiver. Needle-free syringes are put inside the container. Ozone or UV-lamp is built in receiver for sterilization of syringes.

EFFECT: comfort at use.

4 cl, 19 dwg

FIELD: medicine, angiology, surgery.

SUBSTANCE: a thrombolytic preparation should be introduced in several stages at interval being equal to the period of its action by detecting at each stage the decreased time for injecting the fixed volume of this thrombolytic preparation and, on achieving , at least, two successive similar results for the time of injecting thrombolytic preparation one should state upon the end of therapy. The present innovation enables to achieve thrombolysis and reconstruct circulation in patient's affected limb.

EFFECT: higher efficiency of therapy.

1 dwg

FIELD: medical facilities.

SUBSTANCE: conductor can be used for introduction of medicinal preparations in patient's body, in particular, for intravenous introduction of fluid. Conductor for introduction of intravenous catheter has tubular case; unit of needle holder provided with tubular case engaged with case for shift; take-away mechanism mounted in ring-shaped space between case and unit of needle holder; plunger unit with plunger pipe introduced into dismountable engagement with tubular case inside casing; and catheter connected to tubular case by means of friction engagement. Tubular case has ring-shaped groove turned outside, which groove is proximal in relation to plunger pipe. Plunger pipe has ring-shaped boss, oriented inside, which boss is proximal in relation to tubular case. Ring-shaped groove and ting-shaped boss are pressed to form dismountable joint. According to other version of manufacture, plunger pipe has end with opening, which has to be opposite to tubular case. According to third version of manufacture, elongated tubular case has first end which fastens hollow needle with slanted end, second end containing porous plug, supported by friction engagement; expanding chamber disposed between first and second ends, which chamber communicates with hollow needle via channel for fluid, and external wall provided with ring-shaped groove, which groove is disposed close to second end. Plunger pipe has open end which is introduced into engagement for shift along second end of tubular casing of unit of needle holder; end with opening to opposite to open end, and engaging structure protruding in radial inside close to open end. Engaging structure is spring-loaded to make engagement with ring-shaped groove of unit of needle holder by force being sufficient to prevent movement of unit of needle holder against plunger unit by take-away mechanism. According to fourth version of manufacture, part of needle mounting goes though take-away mechanism and it protrudes in front of tubular casing. According to fourth mechanism, conductor for introduction of intravenous catheter has transparent plastic tubular casing, unit of needle holder mounted inside casing, plunger unit, take-away mechanism and catheter. Casing has narrow end, wide end, stepwise diameter between wide and narrow ends, and transversely protruding shelves being adjacent to wide end. Unit of needle holder is mounted inside casing and it has hollow needle with slanted end, member of mounting of needle which keeps needle in axial to casing, transparent plastic expansion chamber which communicated with hollow needle along communication channel, porous plug, which plugs expansion chamber at end being opposite to hollow needle, and ring-shaped groove turned in radial outside close to plugged end of expansion chamber. Plunger unit has transparent plastic plunger pipe with open end inserted into casing to embrace part of mounting of unit of needle holder, cavity for taking away, which cavity is big enough to provide removal of slanted end of needle into casing after taking-away; first structure protruding radial outside to make engagement with casing, and second structure protruding radial inside to make engagement with ring-shaped groove; edge cap provided with opening, which cap plugs plunger pipe at side being opposite to open end. Take-away mechanism, pressed inside casing around unit of mounting of unit of needle holder, which mechanism spring-loads unit if mounting of needle against cavity for take-away inside plunger pipe. Catheter, which embraces narrow end of catheter, has dish disposed in axial to hollow needle and is capable of moving freely inside it. Second structure engages with ring-shaped groove to prevent shift of unit of mounting of needle holder in cavity for take-away by press force of take-away mechanism and by any additional force, which effects top of end when dish is introduced in patient's body.

EFFECT: reliability; quick manufacture; lower chance of taking needle away before time at storage and operation; protection of medical personnel against random punctures of needle; reduced chance of getting infected by pathogenic factors transferred by blood.

66 cl, 6 dwg

Syringe-tube // 2305564

FIELD: medical equipment.

SUBSTANCE: syringe-tube has deformed case made f two separated containers for placement of medicinal preparations, and needle mounted at end of case. Needle has two output channels, each of which channels communicates with corresponding container. Channels are provided with output openings, which openings are disposed one apart the other. Containers are made in form of standard ampoules with deformed side surfaces. Needle is made of two metal capillary pipes connected together; internal openings of pipes have to be output channels of needle. One pipe protrudes the other one. Several output openings are made onto side surfaces of pipes. One output opening is made along edge of protruding pipe and edge of other pipe is closed. Distance from edge output opening of one channel to last output opening, made onto side surface of other channel, is at least 20 mm. Input ends of pipes with input openings at side surfaces are disposed inside ampoules. They are curved outside above ampoules at entrance into ampoules. Pipes are covered with silver on the outside and inside. One polymer elastic pipe with dead end and longitudinal cut along generator of pipe is tightly put on any pipe of needle to close all external output openings of metal pipes.

EFFECT: improved efficiency of application under field and battle conditions; wider functionality; reduced cost; reduced time for injection of several medicinal preparation simultaneously.

3 cl, 4 dwg

FIELD: medicine.

SUBSTANCE: single-use glass syringe is provided with automatic safety device for hiding needle after injection is made. Corresponding safety set is mounted onto single-use glass syringe. Safe syringe has case being hollow from inside and open in front and back sides, piston, cylinder, sleeve, fix and rest contrivance, and control member. Piston is mounted for slide in case of syringe and is provided with manually moved rod; rod can be pulled out of syringe by means of tail end of rod. Cylinder is dismountable attached to tail end of rod. Sleeve is mounted onto cylinder for slide for switching from working position to back position, in which position the needle protrudes out of mentioned sleeve for making injection. Needle moves forward to take safe position when needle is covered by mentioned sleeve. Control member is dismountable attached to tail part of piston's rod to provide ability of movement of mentioned sleeve from back position to pulled out safe position when piston takes place closer to end of injection procedure, while working together with fixing aid.

EFFECT: better comfort at use; cost efficiency; simplified design; prevention of sudden trauma.

17 cl, 5 dwg

FIELD: medical equipment, in particular, needle for liquid injections.

SUBSTANCE: composite safety needle has cylindrical casing with lower surface, needle bearing cannula fixed on lower surface, sleeve telescopically movable relative to casing, spring, and retaining member. Spring positioned within casing urges sleeve to move in direction providing covering of needle distal end, and retaining member also positioned within casing is movable simultaneously with sleeve during injection and automatically locks sleeve in position wherein acute end of needle is closed to thereby irreversibly block movements of composite safety needle.

EFFECT: reduced number of parts used in needle, relatively low allowance requirements with regard to these parts, and limited force applied by spring.

9 cl, 16 dwg