883 results about "Needle holder" patented technology

The invention discloses a sandwiched stapler type alimentary tract anastomosis dissecting sealer, relating to the surgical instruments. The invention provides a sandwiched stapler type alimentary tract anastomosis dissecting sealer which can prevent the alimentary tract anastomotic stoma from tearing, leaking and errhysis from the cut section in surgical operations. The sandwiched stapler type alimentary tract anastomosis dissecting sealer is provided with a nail anvil (which is also called as a bottom needle holder), a nail cartridge (which is also called as a nail anvil box), a sealer body, a movable handle, an adjusting button, a cutter cushion and an anastomosing nail (which is also called as a suturing nail), wherein the nail anvil is connected with the front end of the sealer body, the adjusting button is arranged at the tail part of the sealer body, the movable handle is arranged at the back of the sealer body, a safety button is arranged at the connection of the movable handle and the sealer body, the cutter cushion is arranged on the nail anvil, the anastomosing nail is arranged at the front end part of the sealer body, a membrane is arranged on the surface of the nail anvil (which is also called as the bottom needle holder), and a membrane is also arranged on the surface of the nail cartridge (which is also called as the nail anvil box); and after stapling, a sandwich structure consisting of the membrane, an intestinal wall and the membrane is formed.

A clip of a self-closing type is used for valve repair. The clip is generally U-shaped with two end points separated from each other when it is constrained to be in an open configuration, but tends to coil up to assume its natural closed configuration if the constraint is removed. At least one end point is connected through a suture to a tissue-penetrating needle. A needle holder has an outer tube and an inner member which has a slit at the front and is slidable inside the outer tube. They are designed such that the slit can grab the needle tightly or release it as the inner member is moved backward or forward with respect to the outer tube. With the needle secured at the front, the needle holder is passed through a cannula inserted through an incision and the needle penetrates the leaflets such that the clip can be positioned with its end points hooked to the pair of leaflets to be stitched together. If the clip is released from the suture thereafter, it tends to coil up, reducing the distance between the end points and pulling the leaflets together. A double-arm clip assembly with each of the end points of the clip attached through a suture to a separate needle may be similarly used for valve repair. Such a double-arm clip assembly may contain two of such clips mutually connected by means of a flexible connector such that two leaflets are held together by the connector, with the two clips each anchored to a corresponding one of the leaflets.

A clip of a self-closing type is used for valve repair. The clip is generally U-shaped with two end points separated from each other when it is constrained to be in an open configuration, but tends to coil up to assume its natural closed configuration if the constraint is removed. At least one end point is connected through a suture to a tissue-penetrating needle. A needle holder has an outer tube and an inner member which has a slit at the front and is slidable inside the outer tube. They are designed such that the slit can grab the needle tightly or release it as the inner member is moved backward or forward with respect to the outer tube. With the needle secured at the front, the needle holder is passed through a cannula inserted through an incision and the needle penetrates the leaflets such that the clip can be positioned with its end points hooked to the pair of leaflets to be stitched together. If the clip is released from the suture thereafter, it tends to coil up, reducing the distance between the end points and pulling the leaflets together. A double-arm clip assembly with each of the end points of the clip attached through a suture to a separate needle may be similarly used for valve repair. Such a double-arm clip assembly may contain two of such clips mutually connected by means of a flexible connector such that two leaflets are held together by the connector, with the two clips each anchored to a corresponding one of the leaflets.

The invention relates to a protective device for an injection needle or infusion needle, comprising a needle holder at the proximal end of the needle, on whose shaft a protective element for the needle tip can be moved, said protective element being prevented, by an engagement device between the needle and the protective element, from being moved past the needle tip, and a grip part being provided between the protective element and the needle holder for the purpose of moving or securing the protective element.

A quick release needle holder, comprises a tubular barrel having a needle receiving socket on one end, the needle receiving socket having a segmented wall defining a plurality of annular jaws having internal threads, a device for normally biasing the jaws into an inner position for threadably receiving a needle hub, and a device having finger tabs slideably mounted on the holder for releasably biasing the jaws to a needle hub releasing position.

The end-effector (150) includes a sheath (152) and a medical device or needle carrier (154) that is disposed within the interior compartment (166) of the sheath. Aperture (162) is located in a portion of the sheath proximal a distal end of the sheath that is inserted into a natural or artificial cavity. This device is guided by a real-time imager.

A puncture device with a flexible catheter tube for connecting to a medical infusion line, wherein the device includes a catheter connecting piece or hub attachable at the puncture site on the skin surface of a patient, wherein the catheter hub has a connector for connecting the infusion line and an outlet for the flexible catheter tube; and a needle holder having a puncture needle (stylet), wherein the flexible catheter tube is arranged in the interior of the catheter hub and extends out of the outlet with an output end. The end of the flexible catheter tube opposing the output end is located in the interior of the catheter hub in the area of the connector and is separated from the surrounding area by a septum, wherein the needle holder securely fastens the puncture needle insertable into a passage channel of the catheter tube at the end opposing the pointed or sharp puncture tip. The outlet is located at the bottom side of the catheter hub resting on the surface of the patient in the position of use and the puncture needle is made without a duct.

A needle assembly adapted for fluid communication with a vial containing a substance to be delivered to a subject, the needle assembly including a needle held in a needle holder, the needle holder confined to move in a housing, and an activation mechanism for activating delivery of the substance through the needle, the activation mechanism including a safety latch that initially impedes movement of the needle holder, wherein when the safety latch is placed on the subject, the safety latch moves to a position that permits moving the needle holder to cause the needle to protrude outwards of the housing to pierce the subject to allow administration of the substance to the subject, characterized by a biasing device arranged to apply a biasing force on the needle to cause the needle to protrude outwards of the housing to pierce the subject, and needle release apparatus including a needle arrestor that initially blocks movement of the biasing device and which releases the biasing device when the safety latch moves to the position that permits moving the needle holder to cause the needle to protrude outwards of the housing.

An IV catheter introducer having a retractable needle holder and a tubular plunger that are held by a detent structure in a preferred positional relationship prior to and during insertion of the catheter. Following insertion, the plunger is pushed past the detent structure, permitting a compressed spring to force the needle holder upwardly into the plunger. A vented end cap in the plunger permits rapid venting of air displaced during retraction of the needle holder. The needle holder includes a flash chamber that is easily viewable through a clear plastic housing. Wings are provided on the housing to facililate one-handed operation of the device. A method for assembling the subject catheter introducer is also disclosed.

An endoscopic suturing system and method are disclosed as are devices for use with the system and method such as a suture dispenser, a cinch device, and a tissue grasper. In one embodiment the suturing system includes a cap assembly arranged at the distal end portion of an endoscope or guide member, with the cap assembly including a rotatable needle holder. The needle holder is actuated through a transmission element extending outside the endoscope or guide member. A needle capture device may be inserted through a channel of the endoscope or guide member in order to capture a needle held in the needle holder when the needle holder is rotated so that the needle punctures tissue.

A disposed system for medical waste, and particularly sharp ended waste, includes a sharps receptacle and a companion needle holder. The needle holder has an actuation mechanism capable of detachably mounting an externally threaded hub of a needle assembly to the holder. The sharps receptacle has a top with an automatic release structure disposed thereon for engagement with the actuation mechanism of the needle holder. The automatic release structure cooperates with the actuation mechanism of the needle holder to automatically detach a mounted needle assembly from the holder into the sharps receptacle in response to placement of the holder into the automatic release structure.

A syringe assembly having a retractable needle, the syringe assembly being rendered unusable after a single injection and having a hollow syringe body, a retraction mechanism with a spring disposed in the front portion of the syringe and an inner head, a continuous retainer member surrounding the inner head, and a bridging portion disposed between the continuous retainer member and the inner head, wherein the bridging portion couples the continuous retainer member and the inner head to form a fluid seal between a fluid passageway and the barrel prior to retraction, and a plunger reciprocally disposed inside the barrel and forming a variable chamber between the plunger and the needle holder prior to and during retraction, wherein the continuous retainer member is releasable from the inner head of the needle holder when the plunger is further depressed inside the barrel following injection.

A needle assembly adapted for fluid communication with a vial containing a substance to be delivered to a subject, the needle assembly including a needle held in a needle holder, the needle holder confined to move in a housing, and an activation mechanism for activating delivery of the substance through the needle, the activation mechanism including a safety latch that initially impedes movement of the needle holder, wherein when the safety latch is placed on the subject, the safety latch moves to a position that permits moving the needle holder to cause the needle to protrude outwards of the housing to pierce the subject to allow administration of the substance to the subject, characterized by a biasing device arranged to apply a biasing force on the needle to cause the needle to protrude outwards of the housing to pierce the subject, and needle release apparatus including a needle arrestor that initially blocks movement of the biasing device and which releases the biasing device when the safety latch moves to the position that permits moving the needle holder to cause the needle to protrude outwards of the housing.

A blood collection assembly includes a needle cannula with an intravenous end and a non-patient end. The cannula is mounted to a needle holder so that the non-patient end projects into the holder. A safety shield is telescoped over the needle cannula and is movable from a proximal position where the intravenous end of the cannula is exposed to a distal position where the intravenous end of the cannula is shielded. The safety shield is configured to be passively actuated and propelled into the distal position in response to insertion of a blood collection tube into the holder. However, a slide back actuator extends from the safety shield to permit the shield to be retracted into a proximal position during use and before the safety shield is locked in the distal position.

An injection syringe generally comprised of a multichambered cylindrical ampule, a tripartite case of a front case; a middle case; a rear case, and a needle-holder, and a plunger: the multichambered cylindrical ampule including two chambers of a front space and a rear space, the front space being sealed forwardly with a packing penetrable by a needle and sealed rearwardly with a movable front gasket, and the rear space being sealed forwardly with the front gasket and sealed rearwardly with a movable rear gasket, and the ampule also including a bypass route longitudinally arranged on inner surface of the ampule such that the front gasket is located to take a position rearwardly apart from the bypass route before dissolution of a solid medicine, wherein the front space for admission of the solid medicine is separated from the rear space for admission of a medicinal solvent or dispersing agent; the middle case also including a short thread or fixer means provided externally at midportion thereof, and the rear case including another short thread or fixer means provided internally at the front end thereof. The present invention brings out the merits of facilitating injections in the use of unstable chemicals, and avoiding possible inclusion of foreign matters or microorganisms, and overcoming misoperations possible during complex preparation procedure, inability to comply with an urgent case, such are attendant defects with traditional injection syringes.

An IV catheter introducer having a retractable needle holder and a tubular plunger that are held by a detent structure in a preferred positional relationship prior to and during insertion of the catheter. Following insertion, the plunger is pushed past the detent structure, permitting a compressed spring to force the needle holder upwardly into the plunger. A vented end cap in the plunger permits rapid venting of air displaced during retraction of the needle holder. The needle holder includes a flash chamber that is easily viewable through a clear plastic housing. Wings are provided on the housing to facilitate one-handed operation of the device. A method for assembling the subject catheter introducer is also disclosed.

A suturing device for suturing a portion of biological tissue includes a needle attached to a suture, a needle holder that releasably holds the needle, and a needle driver adapted to be advanced and retracted substantially parallel to a longitudinal axis of the suturing device. A distal needle holder adapted to releasably hold the needle is positioned in a distal position relative to the portion of biological tissue and a distal end of the needle driver is positioned in a proximal position relative to the portion of biological tissue. The needle is positioned in either the proximal position or the distal position. The needle driver is moved longitudinally in a first direction along a path substantially parallel to the longitudinal axis such that the needle and suture pass through the portion of biological tissue, thereby forming a suture incision through which the suture passes. By repeating the above-described processes, a series of stitches is thereby formed.

A retractable safety needle apparatus is provided. The apparatus includes a needle holder with opposite proximal and distal ends. A needle assembly is mounted in the needle holder for movement from a first position where a distal cannula projects distally beyond the needle holder and a second position where the distal cannula is entirely within the needle holder. A spring is provided for propelling the needle assembly proximally and into the second position. The needle assembly includes a deflectable actuator for releasably holding the needle assembly in the first position and against the biasing forces of the spring. Portions of the needle holder adjacent the distal end are tapered to facilitate alignment of the needle assembly and to provide visual cues for proper orientation and gripping locations.

An intravenous catheter insertion device is disclosed to include a barrel, which has a body and a stop wall, a deformable portion extending from the body, a retainer connected with the deformable portion, and a press portion for pressing by the user to deform the deformable portion. A needle set, which has a cylindrical needle holder, a needle fastened to the needle holder at the front side, a springy stop portion extending from the needle holder, and a retainer connected with the needle holder near the front end of the needle holder. And a spring member, which is mounted around the needle set inside the barrel, and has a first end stopped against the stop wall of the barrel and a rear end stopped against the springy stop portion of the needle set.

A syringe comprises a generally-cylindrical, hollow barrel with a hollow nozzle at a distal end thereof. A plunger with an open channel is slidably mounted in the barrel. A needle holder with a needle mounted at one end thereof is arranged in the plunger channel, and movable between an advanced position, whereat the needle projects from a distal end of the nozzle for injection, and a retracted position, whereat the needle is enclosed within the barrel when the injection is complete. A spring retainer is arranged in the barrel. A spring is positioned within the spring retainer, urging the needle holder toward the retracted position. A latch latches the needle holder to the spring retainer thereby maintaining the spring in compression. The latch is releasable in response to the plunger moving to its fully advanced position, whereby the needle holder is released, allowing the spring to expand and thereby move the needle holder to the retracted position.

An inserter includes a housing, a plunger holding an indwelling member, a lifter contained in the housing in the state where the lifter is axially movable relative to the plunger, a needle holder contained in the housing and having a projection that can be latched by the plunger and the lifter, an insertion needle held by the needle holder and inserted in a cannula, and a spring provided between the plunger and the lifter and applying a biasing force in the direction of biasing the plunger and the lifter away from each other. The projection of the needle holder is latched by the plunger before the indwelling member reaches the body surface of the user, and latched by the lifter after the indwelling member reaches the body surface of the user.

A paracentesis needle holder attachable to an ultrasonic probe is provided. The holder includes a needle guide, an adjustment mechanism, and an open / close mechanism. The needle guide includes a first base and a second base and is configured to guide a needle in a plurality of directions between the first and second bases. The adjustment mechanism is provided at the needle guide and configured to adjust spacing between the first base and the second base in accordance with a diameter of the needle. The open / close mechanism is coupled with the needle guide and configured to close the first and second bases so that the needle is guided in one of the directions and to open the first and second bases so that the needle becomes releasable from the holder.

The invention provides a safety syringe, which has a cylinder (11), a syringe needle (21), a needle holder (31) associated to the cylinder and adapted to hold the syringe needle, and a plunger (41) associated to the cylinder (11), wherein the plunger (41) comprises a piston (42) and serves to inject a filling of the cylinder (11) via the syringe needle (21), and wherein the plunger (41) can be coupled with the needle holder (31) arranged in the region of a front hole (12) of the cylinder (11), to retract the needle holder (31) together with syringe needle (21) into the cylinder (11) by pulling the plunger (41) once coupled to the needle holder (31) is retracted into the cylinder by rotating the plunger (41) and pulling the plunger (41) aft thereby pulling the needle holder (31) into the cylinder (11). Then the aft end of the plunger (41) is broken off, and a removable cap (49) from the aft end of the plunger (41) may be placed over the opening in the forward end of the cylinder (11).

An endoscopic suturing system and method are disclosed as are devices for use with the system and method such as a suture dispenser, a cinch device, and a tissue grasper. In one embodiment the suturing system includes a cap assembly arranged at the distal end portion of an endoscope or guide member, with the cap assembly including a rotatable needle holder. The needle holder is actuated through a transmission element extending outside the endoscope or guide member. A needle capture device may be inserted through a channel of the endoscope or guide member in order to capture a needle held in the needle holder when the needle holder is rotated so that the needle punctures tissue.

An auto-injector confines all functional components inside an enclosed housing, to keep its needle out-of-sight, at all times. Within the housing, a needle holder positions a needle at a location. A drive mechanism then simultaneously engages the needle with a fluid source and accelerates it with a predetermined momentum for insertion into a patient. After fluid delivery, the withdrawn needle is moved to storage within the housing for subsequent disposal.

A syringe includes a hollow barrel, a hollow plunger movable within the barrel and a needle assembly secured within and at a distal end of the barrel. The needle assembly includes a needle holder, a resilient member that biases the needle holder toward the proximal end opening of the barrel, and a retaining member releasably secured to the needle holder via a reduced material section. The retaining member maintains the needle holder at the distal end of the barrel against the bias of the resilient member. When the plunger is fully depressed within the barrel, the plunger engages the needle holder such that the retaining member is forced to break away and separate from the needle holder along the reduced material section to facilitate retraction of the needle holder and a needle secured to the needle holder into the retraction cavity disposed within the plunger.

A retractable needle safety syringe is provided having a braking mechanism. The braking mechanism may be disposed at a proximal portion of a syringe body of the syringe. The braking mechanism may comprise a brake member which is traversable between a braking position and a released position. At the braking position, the brake member frictionally engages an outer surface of the shaft of a plunger of the syringe. The frictional engagement counterbalances a retraction force that urges a piston of the syringe toward a retracted position. When the brake member is traversed to the released position, the brake member does not press against the outer surface of the shaft. As such, the retraction force may traverse the piston toward the retracted position and traverse a needle and needle holder into the body of the syringe.

A safety syringe includes a flexible holder-supporting seat that is sleeved around and that clamps a needle holder within a front end portion of a syringe barrel. A flexible sealing member seals an open front end of a plunger so as to define a vacuuming chamber in the plunger. When the plunger moves within the barrel to a front limit position, a holder-retaining front portion of the sealing member engages and retains the needle holder thereon. The plunger pushes the holder-supporting seat to separate from the needle holder such that the sealing member and the needle holder mover rearward within the syringe barrel due to negative pressure produced in the plunger, thereby retracting a needle into the syringe barrel.