4302 results about "Syringe needle" patented technology

An instrument for surgical suturing includes a shaft, and a needle disposed slidably for longitudinal travel with respect to the shaft. A prong formed on one end of the shaft projects across a longitudinal axis of the needle and has an opening formed through the prong that provides a clearance through which a tip portion of the needle passes when it is advanced. Slots formed on a surface of the prong facing the shaft releasably hold suture across the opening. Advancing the needle through the clearance allows a hook formed on the tip of the needle to capture the suture. Once withdrawn, the needle draws the suture back through tissue pierced during advancement. The suture is released from the slots and drawn back through the tissue for further knot tying and suturing to effect the tissue repairs.

A safety syringe cylinder has a structure for attaching a syringe needle precisely. The syringe needle can be retracted into the syringe cylinder for bending. A hook seat is formed at a lower end of the needle. An annular hook groove is formed at a top end of the push rod cap. The hook seat is engaged with the annular hook groove so as to control the displacement and bending process of the syringe needle. Thereby, the processing of undesired syringe needle is safe, reliable and convenient.

An extravascular system is provided which includes a catheter adapter having a blood control septum configured to control flow of a fluid through the catheter adapter, the catheter adapter further having a catheter configured for intravenous insertion. The extravascular system further includes a septum activator slidably inserted within the catheter adapter and configured for advancement through the blood control septum to provide a fluid pathway through the blood control septum. Further still, the extravascular system includes an external safety mechanism comprising a needle hub and a needle shield interconnected via a tether, wherein the needle shield includes a safety clip that is configured to retain a sharpened end of the introducer needle within the needle shield. Some implementations further comprise an access port forming a portion of the catheter adapter and providing selective access to the lumen of the catheter adapter.

An infusion medium delivery system, device and method for delivering an infusion medium to a patient-user, includes a needle inserter device and method for inserting a needle and/or cannula into a patient-user to convey the infusion medium to the patient-user. The needle inserter device and method operate to insert a needle and cannula into a patient-user's skin and automatically withdraw the needle from the patient-user, leaving the cannula in place and in fluid flow communication with a reservoir. The delivery device may include a base portion and a durable portion connectable to the base portion, and wherein the base portion can be separated from the durable portion and disposed of after one or more specified number of uses. The base portion supports the reservoir and the needle inserter device, while the durable portion supports a drive device for selectively driving the infusion medium out of the reservoir and into the needle and/or cannula.

An infusion medium delivery system, device and method for delivering an infusion medium to a patient-user, includes a needle inserter device and method for inserting a needle and/or cannula into a patient-user to convey the infusion medium to the patient-user. The needle inserter device and method operate to insert a needle and cannula into a patient-user's skin and automatically withdraw the needle from the patient-user, leaving the cannula in place and in fluid flow communication with a reservoir. The delivery device may include a base portion and a durable portion connectable to the base portion, and wherein the base portion can be separated from the durable portion and disposed of after one or more specified number of uses. The base portion supports the reservoir and the needle inserter device, while the durable portion supports a drive device for selectively driving the infusion medium out of the reservoir and into the needle and/or cannula.

A retractable winged I.V. set has a slidable retraction body mounted in a hollow chamber of a housing. The retraction body has a hollow needle fixed in its front end and a tube connector for passing fluid from an external reservoir through the needle. The housing has a pivoting releasable latch preferably configured as dual opposed latches that are biased to normally encroach into the chamber through an opening in the wall of the housing. A catch portion on the retraction body is contacted by an encroaching latch portion to hold the retraction body in an unretracted position with the needle exposed for use. When the latches are released, a spring drives the retraction body to the back of the chamber and withdraws the needle into the housing.

A catheter integral with a valved needle-free connector provides a safety catheter device configured to receive a blunt cannula and sharp needle forming an insertion mechanism. The sharp needle is mounted within a needle tube and a control handle is used to slide the sharp needle out of and into the protective needle tube. When the insertion mechanism is mounted to the connector and the control handle is used to slide the sharp needle out of the tube, a blunt cannula first moves into contact with and enters the bore of the valve mechanism of the connector opening it and protecting it from damage that may be caused by the sharp needle. The sharp needle is then extended through the connector and extends out the distal end of the catheter so that a venipuncture procedure may be performed to properly locate the catheter in the patient's circulatory system. Once located, the needle may be retracted into the insertion mechanism, the insertion mechanism disconnected from the connector, and discarded.

A delay mechanism for staging the operation of an automatic injection apparatus (20) to ensure medication contents are properly delivered prior to the needled syringe (32) of the apparatus being retracted. In one form, the delay mechanism includes a shuttle (50), a follower (110), a locking member, a damping compound, and a driver and a driver biasing element (44). The shuttle is for a needled syringe of the apparatus and includes a first latching element. The follower includes a second latching element and a cammable surface, which second latching element is for cooperating with the first latching element to limit motion of the shuttle relative to the follower in a second direction opposite the first direction. The locking member is movable from a locking position to a release position by engagement with the syringe plunger during an injection, the locking member, when in the locking position, preventing rotation of the follower relative to the shuttle, the locking member, when in the release position, allowing rotation of the follower relative to the shuttle. The damping compound is between the follower and a supporting surface to dampen rotation of the follower relative to the shuttle. The driver is rotatably fixed relative to the shuttle and includes a camming surface. The shuttle allowing retracting of the syringe needle into the housing of the automatic injection apparatus after injection.

A needle assembly that has a flexible shield movable between (i) a first position, where the flexible shield is uncompressed, and (ii) a second position, where the flexible shield is compressed and an administering member located within the flexible shield, where at least one of the administering member and the flexible shield is axially movable with respect to the other of the administering member and the flexible shield in an unlocked position prior to and during usage of the needle assembly, and the at least one of the administering member and the flexible shield is no longer axially movable with respect to the other of the administering member and the flexible shield in a locked position. Prior, during and after use of the needle assembly, the needle is never exposed. After a single usage of the needle assembly, the needle is locked within the flexible shield and cannot be reused.

A catheter device having an elongated tubular member with a proximal end and a distal end, and a needle disposed near the distal end. In one embodiment, the needle has a rigid, penetrating tip coupled to a flexible portion by an overlapping joint. The flexible portion enables the needle to bend to a penetrating angle relative to the distal end of the elongated tubular member and penetrate a body tissue without kinking.

An injection device for a syringe, having a syringe body, a cannula with a needle, a plunger with a plunger rod, and an injection carriage for displacing the syringe body and the plunger, comprises at least one actuating element that acts on the injection carriage to carry out the injection procedure. The actuating element (120, 220, 320) cooperates with components which withdraw the needle (108, 208, 308) from the puncture site once the injection procedure has been completed, using a return stroke (H3) that is applied to the injection carriage. A single, targeted linear movement inserts the needle to a defined depth, injects the medicament and, once the injection has been completed, produces a return stroke which allows the needle to be withdrawn into the housing and thus out from the puncture site.

The injection device is advantageously equipped with additional components which produce a delay (TV) between the completion of the injection stroke (H2) and the start of the return stroke (H3). The advantage of said delay is that the pressure that has been produced in the subcutaneous tissue by the injection of the medicament can subside before the needle is withdrawn, thus preventing to a great extent the penetration of the medicament into the insertion channel of the needle.

A volume adapter (410) can advantageously be used to predetermine the injection stroke (H2) and thus the quantity of a medicament that is administered during the course of the injection stroke (H2).

The present invention relates to the medical field, in particular relates to the practice of percutaneous vertebroplasty where a pair of syringes in the distal extreme of a lengthened hydraulic device, are united by a camera of intermediate connection of larger diameter (pressure exerting body) or modified inverted syringe tube with a bolster, a hydraulic connecting tube of flexible material that transmits the pressure of the smaller diameter manual or impulsion syringe in the proximal extreme of the device toward the intermediate cylindrical larger diameter camera (pressure exerting body), this camera is in an inverted position with regard to the first syringe (fluid control), this intermediate camera has a moving piston longitudinal to the axis of the cylinder that is controlled with the first syringe (manual) and in cooperation with the atmospheric pressure. The injecting syringe loaded with bone cement is coupled with the bolster of the body of pressure, and to the needle that drives the cement toward the interior of the bone. The intermediate camera (pressure exerting body) together with the hydraulic tube and the manual syringe form a hydraulic press system (F/A=f/a) that allows to increase in a potential way the pressure exerted in the first syringe and to make the injection of polymethylmethacrylate (PMMA) at an approximate distance of 1.0 m to 1.5 m.

Injection device comprising a tubular elongated main body, a needle shield slidably arranged in said main body, a needle shield link slidably connected to said needle shield, a enclosure containing medicament arranged in said main body, a needle connected to said enclosure, a plunger operatively arranged to said enclosure for ejecting said medicament through said needle and arranged on its upper part with a number of outwardly extending stop members, spring means arranged to said plunger for operating said plunger, a dose activating means, a needle shield spring surrounding the needle shield link. The invention is characterised in that said injection device further comprises a first tubular member rotationally and slidably arranged inside said needle shield link, said tubular member comprises a number or ridges and protrusions on both its outer and inner surfaces, said ridges and protrusions on the outer surface of the tubular member co-operate with guide members arranged on the inner surface of said needle shield link, said ridges and protrusions on the inner surface of the tubular member co-operate with the outwardly extending stop members of the plunger that said injection device further comprises a second tubular member arranged inside said housing, arranged and designed with a number of ridges and protrusions on its inner and outer surfaces capable of setting and delivering a certain preset dose.

An injector is automatic in that the needle insertion into the injection site (e.g., a patient's skin) is triggered by the user or caregiver, the insertion is automatic, the following delivery is automatically initiated upon needle insertion, and the needle is shielded automatically after the end of delivery. Preferably the user does not see the needle prior to, during, or after injection. The injector includes a proximal and distal housings and a needle shield arranged to slide on the distal housing. The injector has a driver arranged to move the syringe to cause the needle penetration, to inject the drug, and subsequently to release the shield. The syringe needle is shielded and the shield locked automatically after delivery is completed. The patient does not experience any injector force on the tissue during injection. The injector has built in patient safety features.

A surgical suturing apparatus includes a suture housing, a needle mounted within the suture housing for movement about an arcuate path, a drive assembly operably associated with the needle for controlling movement of the needle with a suture secured thereto about the arcuate path in a manner facilitating application of the suture to tissue, a handle, an elongated flexible member having a distal end attached to the suture housing and a proximal end attached to the handle, and a mechanism for releasing and reattaching the handle to the flexible member.

A puncture instrument capable of punctured high frequency treatments. The puncture instrument essentially includes: a guide tube to be inserted into an intracavitary portion of a patient; a puncture needle member having an elongated needle body slidably received in the guide tube, and a sharp-pointed needle head provided contiguously at the fore end of the elongated needle body and protrudable out of the guide tube to penetrate into a target intracorporeal portion to be treated when the needle body is manipulated in a forward direction; and a high frequency electrode provided on a fore end portion of the needle body to be penetrated into the target intracorporeal portion together with the sharp-pointed needle head.

A hypodermic needle assembly configured such that the movement of a needle shield into position to block the needle tip occurs as a direct consequence of a longitudinal force applied by insertion of a syringe plunger is provided. The hypodermic needle assembly according to the present invention includes a needle, a needle hub, and a safety spring clip assembly, the safety spring clip assembly being configured to automatically launch from the needle hub and slide along the needle to shield the needle tip, thus preventing accidental contact with the needle tip. Additional mechanisms for launching the safety spring clip are also provided, which include using a trigger ring for rotating and launching the safety spring clip. Methods for making and using the hypodermic needle assemblies are also disclosed.

A fluid collection or infusion set is provided. The set includes flexible tubing with a fitting attached to a proximal end and a needle assembly attached to the distal end. The needle assembly includes a needle hub and a needle cannula secured in the hub. An actuator arm extends proximally and outwardly from the needle hub and has an actuator button at its free end. The needle assembly is disposed in a barrel and can move from a distal position where the needle cannula is exposed to a proximal position where the needle cannula is shielded. A spring is disposed in the barrel for propelling the needle assembly to the proximal position. The barrel includes an actuating aperture that receives the actuator button for locking the spring in a compressed condition. Depression of the actuator button enables the spring to propel the needle assembly into its proximal shielded position.