36 results about "Ligating clips" patented technology

A polymeric, surgical clip having first and second curved legs with each having a pair of opposing side surfaces joined at their proximal ends by a flexible hinge section and movable from an open position to a closed position for clamping a vessel between curved opposing inner surfaces. The first leg terminates at its distal end in a female locking member, and the second leg member terminates in a male locking member complimentary to the female locking member such that when the first and second leg members are moved from an open position to a closed position about the hinge section the male member is lockingly engaged in the female locking member. The clip is provided with low profile boss-like elements on the legs thereof to reduce the risk of snagging a suture during coronary artery bypass graft surgery.

A torsional ligation clip applier and method of use for endoscopic or laparoscopic vessel occlusion procedures is provided. The ligation clip includes a hub portion and ligation arms for occluding a vessel. Ligation arms are independently rotatable about a common axis that is parallel to the longitudinal axis of the ligation arms. The ligation arms are biased in a first position by a biasing mechanism. The ligation arms of the clip are rotatable through at least one of a plurality of positions wherein it has a larger diameter than an access device. An applier receives at least one ligating clip in a first position and delivers the ligating clip to a vessel in a second position. Occlusion of the vessel occurs when one of the ligation arms is rotated into a third position.

A polymeric, surgical clip having first and second curved leg members joined at their proximal end by a hinge portion and movable from an open position to a closed position for clamping a vessel between curved opposing inner surfaces. The clip includes a coating on its exterior which reduces the friction between the leg members and complementary locking mechanisms disposed at the distal end portions of the leg members, and stabilizes closing of the clip. The coating can be any coating, including a polymer coating such as one which includes polytetrafluoroethylene. The coating may be applied using a solvent such as HFC43-10.

The invention discloses a pair of clamping applying pincers for surgical ligation. The clamping applying pincers comprise a tubular shell, a pair of pincers and a magazine, wherein a guide groove is formed in the tubular shell; the magazine is arranged in the guide groove and can move left and right along the guide groove; the pincers comprise an upper pincer opening, a lower pincer opening, an upper pincer opening rotating shaft and a lower pincer opening rotating shaft; the upper pincer opening is fixed to the guide groove through the upper pincer opening rotating shaft and can rotate along the upper pincer opening rotating shaft; the lower pincer opening is fixed to the guide groove through the lower pincer opening rotating shaft and can rotate along the lower pincer opening rotating shaft; the upper pincer opening rotating shaft and the lower pincer opening rotating shaft are respectively arranged on the upper side and the lower side of the magazine; the upper side and the lower side correspond to each other; the upper pincer opening rotating shaft and the lower pincer opening rotating shaft can rotate to the opposite direction when the magazine moves left and right. The clamping applying pincers for surgical ligation provided by the invention are simple in structure and convenient to use, and can clamp and use a ligating clip.

In a surgical instrument for applying C-shaped ligating clips having two juxtaposed legs which are joined to each other by a bridge portion and are each divided by a longitudinal slot into two juxtaposed portions joined to each other at the free end of the legs, the surgical instrument comprising two juxtaposed clamping jaws with guiding surfaces facing each other for the legs of a ligating clip that lie against the guiding surfaces when the ligating clip is inserted between the clamping jaws, in order to improve the positioning of the ligating clip between the clamping jaws, it is proposed that there be arranged on at least one of the guiding surfaces of the clamping jaws an inwardly protruding projection which, when the ligating clip is advanced along the guiding surfaces, elastically enters the longitudinal slot of the ligating clip.

A clip applying apparatus is provided for applying a ligating clip to tissue. The clip applying apparatus includes, inter alia, a handle assembly, a central body portion, an anvil jaw, and a slide member movably supported in relation to the anvil jaw. The anvil jaw and the slide member are configured to define an enclosed tissue receiving area when the slide member is in an advanced position. A method is also provided for ligating tissue using the presently disclosed clip applying apparatus.

The present invention relates to a clip applier for clipping and dividing blood vessels, including: a handle; a first jaw unit; and a second jaw unit. The clip applier of the present invention can bring up two ligating clips at the same time with the first jaw unit and the second jaw unit, whereas the two clamping positions of the blood vessel can be clamped with the ligating clips simultaneously by the clip applier of the present invention in a single step, and thus the operating steps can be simplified, and the time involved with the surgical operation can be shortened.

In a surgical instrument for applying C-shaped ligating clips having two juxtaposed legs which are joined to each other by a bridge portion and are each divided by a longitudinal slot into two juxtaposed portions joined to each other at the free end of the legs, the surgical instrument comprising two juxtaposed clamping jaws with guiding surfaces facing each other for the legs of a ligating clip that lie against the guiding surfaces when the ligating clip is inserted between the clamping jaws, in order to improve the positioning of the ligating clip between the clamping jaws, it is proposed that there be arranged on at least one of the guiding surfaces of the clamping jaws an inwardly protruding projection which, when the ligating clip is advanced along the guiding surfaces, elastically enters the longitudinal slot of the ligating clip.

A polymeric surgical ligating clip is provided having curved leg members joined by a resilient hinge. A leg member includes a flexible rib protruding from a vessel clamping inner surface and extends longitudinally between the proximal and distal end portions of the leg member. The flexible rib defines a channel extending transversely through the rib along a majority of said length. The flexible rib can collapse and provides better retention of the clip on a vessel. The clip can contain a flexible rib on both legs in an interlocking fashion. Or a plurality of teeth can protrude from a second vessel clamping inner surface of a second leg member. The plurality of teeth can include first and second rows of teeth extending longitudinally on the second leg member, transversely separated from each other on opposite sides of a centerline of the clip.

Methods and devices are provided for placing occlusion fasteners. In general, a surgical instrument is provided having a shaft configured to be introduced into a body through a scoping device and to deliver a ligating clip to occlude tissue in the body. The scoping device and the shaft can each be flexible, with the shaft configured to be advanced through a working channel of the scoping device. The shaft can have a size configured to allow a plurality of surgical instruments to be concurrently disposed in the scoping device's working channel and for one or more of the surgical instruments to extend beyond a distal end of the scoping device.

The present invention relates to a clip applier for clipping and dividing blood vessels, including: a handle; a first jaw unit; and a second jaw unit. The clip applier of the present invention can bring up two ligating clips at the same time with the first jaw unit and the second jaw unit, whereas the two clamping positions of the blood vessel can be clamped with the ligating clips simultaneously by the clip applier of the present invention in a single step, and thus the operating steps can be simplified, and the time involved with the surgical operation can be shortened.

A polymeric, surgical clip having first and second curved leg members joined at their proximal end by a hinge portion and movable from an open position to a closed position for clamping a vessel between curved opposing inner surfaces which are substantially parallel when the clip is closed. An interlocking mechanism is formed by a portion of the inner surfaces of the first and second legs. The interlocking mechanism may be a tongue-in-groove mechanism, formed by a lip or tongue protruding from a portion of the inner surface of one leg and a groove formed in a corresponding portion of the inner surface of the other leg, or a lock-step mechanism, formed by complementary L-shaped notches wherein a notch is provided in a portion of the inner surface of each leg. The interlocking mechanism acts to impede longitudinal movement of the clip relative to the vessel being clamped.

A polymeric, surgical clip having first and second curved leg members joined at their proximal end by a hinge portion and movable from an open position to a closed position for clamping a vessel between curved deposing inner surfaces which are substantially parallel when the clip is closed. The first leg terminates at its distal end in a deflectable hook member defining a crest or cutting edge along at least a portion of the outer surface thereof, and the second leg member terminates in a locking portion complimentary to the hook member such that when the first and second leg members are moved from an open position to a closed position about the hinge means the hook member will deflect about the distal end of the second leg member to lock the clip in a closed position. The deflection of the hook member will serve to cut connective tissue adjacent a vessel or the like to be clamped when the leg members are closed to aid in locking the clip in the closed position about the vessel or the like to which the surgical clip is applied.

A polymeric, surgical clip having first and second curved legs joined at their proximal ends by a flexible hinge section and movable from an open position to a closed position for clamping a vessel between curved opposing inner surfaces. The first leg terminates at its distal end in a female locking member comprising a resilient inwardly turned hook having a recess in the mouth of the hook, and the second leg member terminates in a male locking member complimentary to the female locking member and comprising a detent such that when the first and second leg members are moved from an open position to a closed position about the hinge section the hook member will deflect about the distal end of the second leg member thereby engulfing the male locking member in the mouth of the hook and matingly engaging the detent in the recess thereof, thus securely locking the clip in the closed position. The locking feature provides greater closure security to the clip when clamping large diameter or uncompressible tissue.

The present invention discloses one kind of hemostatic ligating clip of absorbable material for surgical abdominoscope operation. The hemostatic ligating clip includes one outer layer of polyglycolide and one inner layer of poly-p-dioxanone or p-dioxanone-lactide copolymer. The hemostatic ligating clip made of materials with high hydrophilicity and flexibility has high compatibility to skin and tissue, no injury to the tissue of human body and the degradation speed determined by the outer layer.

The invention discloses a continuous clip-discharging clamp and a continuous clip-discharging device, and relates to the technical field of special instruments for laparoscopic surgery. The continuousclip-discharging clamp comprises a cannular clamp cavity, and a magazine installed in the camp cavity and used for installing ligating clips. One end of the clamp cavity is provided with a clamp mouth used for assisting the discharge of the ligating clips. The magazine bears against the clamp mouth. A push rod is inserted in one end, away from the clamp mouth, of the clamp cavity. The push rod ispositioned at the end part in the clamp cavity and bears against the nearest ligating clip. One end, away from the clamp mouth, of the clamp cavity is further provided with a push part capable of continuously pushing the push rod to be moved to the direction of the clamp mouth. The continuous clip-discharging clamp is capable of safely, efficiently, rapidly and continuously discharging the ligating clips. The continuous clip-discharging device is capable of continuously discharging the ligating clips with double-layer structures.

The invention relates to a medical ligating clip which is used for surgical operation. The medical ligating clip is structurally characterized in that the medical ligating clip comprises a first clamping arm (1) and a second clamping arm (2) which are of arc structures, the outer surfaces of the clamping arms are in the shapes of circular surfaces (3), concave-convex grooves (4) are formed in the midcourt lines of the inner surfaces of the two clamping arms, the two clamping arms are connected through an elastic hinge (5), the two ends of the medical ligating clip are provided with lock catch structures (6) matched with each other, and meanwhile the two sides of the midcourt lines of the inner surfaces of the two clamping arms are provided with protruding strips (7), wherein a 20-45-degree included angle is formed between each protruding strip and the corresponding clamping arm. The medical ligating clip is formed by conducting molten plastic injection on monomer homopolymer or copolymer of one or more of high-molecular polymer polyformaldehyde, polyetherimide, polyether sulfone and polyethylene glycol terephthalate which are better in biocompatibility.

The invention discloses a ligating clip for surgical ligation. The ligating clip comprises a ligating clip body, wherein the ligating clip body is shaped like V and consists of a first clip arm and a second clip arm; a lock hook which is bent inwards is arranged on the end part of the first clip arm; a hook groove is formed in the end part of the second clip arm; the lock hook corresponds to the hook groove in shape and size; when the lock hook is clamped in the hook groove, the end part of the lock hook hooks the bottom of the hook groove; a hook end clamping post is transversely arranged on the first clip arm close to the lock hook; a groove end clamping post is arranged on each of the two sides of the second clip arm close to the hook groove; a corner of the V-shape between the first clip arm and the second clip arm is provided with a flexible hinge. The ligating clip for surgical ligation provided by the invention is simple in structure, high in strength and good in tenacity, and can meet the requirement of various sizes under the condition that the ligating strength and the tenacity are guaranteed.

The invention discloses an absorbable hemostatic ligating clip and a preparation method thereof. The absorbable hemostatic ligating clip is prepared from the following material components in parts by weight: 5 to 70 parts of polyglycolic acid composite particles and 30 to 95 parts of polyethylene glycol modified poly(p-dioxanone), wherein the polyglycolic acid composite particles consist of polyglycolic acid and cell factors according to the weight ratio of (40-45):1; the cell factors are blood coagulation factors or growth factors. According to the absorbable hemostatic ligating clip disclosed by the invention, the polyglycolic acid composite particles can be quickly decomposed in the early stage by adjusting the molecular weight and the use amount of polyglycolic acid, to assist damaged tissues in hemostasis or recovery; furthermore, the structure of the ligating clip is complete within two weeks to achieve an effective closing effect; after two weeks, the polyglycolic acid is gradually completely degraded, and then the cell factors are completely released, so that the ligating clip can be decomposed quickly within 2 to 4 weeks and fall off and is completely absorbed within 4 months; therefore, the clinical requirement is met, and the postoperative potential risk is reduced. The preparation method of the absorbable hemostatic ligating clip has simple technological conditions, the operation is easy, the requirement on equipment is low, and the absorbable hemostatic ligating clip and the preparation method thereof are suitable for large-scale industrial production.

The invention provides an intracavitary ligating clip for endoscopic surgery, which comprises a steel ball, a magnet, a restoring part and reserved perfusion grooves; the number of upper anti-slippage teeth is equal to the number of lower anti-slippage teeth; when the ligating clip is closed, each upper anti-slippage tooth corresponds to one lower anti-slippage tooth, and moreover, the upper anti-slippage teeth are in tight contact with the lower anti-slippage teeth, so that a group of closed upper anti-slippage teeth and lower anti-slippage teeth are formed; the gap between each two groups of upper anti-slippage teeth and lower anti-slippage teeth is the reserved perfusion groove; both ends of the restoring part are respectively fixedly connected with the upper anti-slippage teeth and the lower anti-slippage teeth; the steel ball is embedded in a clip head. The intracavitary ligating clip has the following advantages: after the intracavitary ligating clip is closed, the reserved perfusion grooves can keep microcirculation in tissues, so that necrosis is prevented; the wavy frictional lines on the bottoms of the reserved perfusion grooves and the frictional particles on the surfaces of the anti-slippage teeth can prevent slippage which can cause the intracavitary ligating clip to come off. The arrangement of the restoring part can prevent an elastic curved wall from losing elasticity due to a long time of closing.

The invention relates to a double-motor clip applicator. The double-motor clip applicator comprises a working head as well as a first motor, a second motor, a first drive assembly, a second drive assembly and a clip bin assembly which are arranged in the working head, wherein the clip bin assembly comprises a clip bin for accommodating ligation clips and a clamp arranged on one side of the clip bin, a trigger rod and a clip pushing rod are also arranged in the working head, the trigger rod is connected with the clamp to open or trigger the clamp, the first drive assembly is connected with thetrigger rod and the first motor, the second drive assembly is connected with the clip pushing rod and the second motor, and the clip pushing rod pushes the ligation clips in the clip bin to enter theclamp. The double-motor clip applicator solves the problems that a traditional clip applicator needs a shaft to complete clip sending and trigger actions, has higher dependence and restriction relations and causes misoperation easily. Through double-motor control, the double-motor clip applicator is simpler to operate, has a higher degree of freedom and reduces the error rate.

The invention discloses a quickly-absorbed hemostatic ligating clip. The quickly-absorbed hemostatic ligating clip is divided into an inner layer and an outer layer, the outer layer is made from polyglycollide, the inner layer is made from biodegradable aliphatic polyester containing structural units shown in the formula I and the formula II, and A and B are independently selected form C1-C6 alkylene. The quickly-absorbed hemostatic ligating clip has the advantages of quick absorption by human body (complete absorption in around 6 months) and long storage life of the product.