93 results about "Ligation clip" patented technology

The invention discloses a manufacturing method of a ligation clip and the ligation clip, the ligation clip comprises a V-shaped ligation clip body, the ligation clip body is made of a high polymer material, the ligation clip body is provided with a first clip arm, a second clip arm and an elastic connecting part, the end part of the first clip arm is provided with a lock hook, and the end part of the second clip arm is provided with a lock catch; the ligature clip further comprises metal wires arranged in the first clip arm, the second clip arm and the elastic connecting portion, a plurality of grooves are formed in the outer surfaces of the metal wires, the ligature clip body wraps the metal wires through an injection molding process, and anchoring portions extending into the grooves are arranged in the ligature clip body. According to the ligation clamp, a rigid-flexible composite implementation mechanism is adopted, the metal wire serves as a rigid core, the ligation clamp body made of a high polymer material serves as a flexible base body, in addition, mutual movement of the ligation clamp body and the metal wire is effectively prevented through combination of the groove and the anchoring part, the mechanical property bottleneck of a traditional single-material ligation clamp is broken through, and the durability of the ligation clamp is improved.

A ligature clip assembly and a clip applier, the ligature clip assembly including a plurality of ligature clips, each of the plurality of ligature clips including a first beam, a second beam, and an elastic connection connecting the first beam and the second beam, the elastic connection configured to allow the first beam and the second beam to have an open state and a closed state by elastic deformation, the plurality of ligation clips comprise a first ligation clip and a second ligation clip which are adjacent to each other, and the first ligation clip and the second ligation clip are connected through a connecting piece. Therefore, the first ligature clip and the second ligature clip which are adjacent can keep a certain distance and dragging force in the pushing process, so that the ligature clips are prevented from falling off in the closing process, and the problems that the ligature clips are blocked in the continuous conveying process and the like are solved.

This utility model relates to a stable ligation clip, including an upper clamping arm, a lower clamping arm, and a hinge. The rear ends of the upper and lower clamping arms are hinged together, and the front of both the upper and lower clamping arms is provided with a positioning post for cooperating with the clamping forceps. The front ends of the upper and lower clamping arms are also provided with a locking structure that cooperates with each other. The clamping surfaces of the upper and lower clamping arms are provided with several anti-slip textures. The rear side of the hinge is provided with a first structure to improve stable contact with the pushing plate of the clamping forceps. The addition of a first structure that can stably contact the pushing plate on the continuous-fire clamping forceps, while retaining the original ligation clip structure design, makes it compatible with both continuous-fire clamping forceps and currently available single-fire clamping forceps. Moreover, the clamping is stable and the operating principle is the same, so doctors do not need to readjust.

The clip applier with the transmission mechanism comprises a clip head assembly and a device body assembly, the near end of the clip head assembly is connected with the far end of the device body assembly, the clip head assembly comprises a clip head and an outer tube, the outer tube is connected to a ligation clip in a sleeving mode, and the device body assembly comprises an instrument shell, a trigger, the transmission mechanism, a push-pull rod and a reset spring; the trigger is pulled towards the near end, the drive transmission mechanism pushes the push-pull rod to compress the reset spring and enable the push-pull rod to slide towards the far end, and therefore the ligation clamp is controlled to be closed. The trigger is pushed towards the far end, the transmission mechanism is driven to pull the push-pull rod to slide towards the near end, meanwhile, the reset spring is reset, and therefore the ligation clamp is controlled to be opened. The device is simple in structure, good in effect, low in cost and easy in process implementation.

The application discloses a clamp removing forceps and a jaw thereof, which is used for untying a ligature clamp, the ligature clamp comprising a first clamp arm and a second clamp arm connected by a rotating hinge, the first clamp arm being provided with a first protruding column, and the second clamp arm being provided with a second protruding column; the jaw comprising an upper jaw blade, a lower jaw blade and a pushing piece, the upper jaw blade and the lower jaw blade being openable and closable, the upper jaw blade and the lower jaw blade being respectively provided with a limiting groove and a limiting table, the limiting groove being used for positioning the first clamp arm and the second clamp arm when the ligature clamp is closed, and the pushing piece being used for pushing the ligature clamp when the ligature clamp is opened and for clamping the first protruding column and the second protruding column into the limiting table of the upper jaw blade and the limiting table of the lower jaw blade respectively. The jaw of the clamp removing forceps is provided with the limiting table and the limiting groove in the jaw blade, and the pushing piece is used for assisting, so that the operation difficulty and the damage risk of the ligature clamp are reduced.

Polymeric ligation clips and a clip applier for applying a polymeric ligation clip to tissue are disclosed herein. More particularly, the polymeric ligation clips include separate first and second beams that can be coupled to each other and are movable from a reduced diameter open position in which minimal strain is placed on the ligation clip to a clamped position and to a clip applier for delivering such a ligation clip to a surgical site.

The utility model relates to a composite ligation clip integration device which comprises an integration box, a placing base used for placing ligation clips is arranged in the integration box, clamping grooves used for clamping the ligation clips are formed in the top face of the placing base, and a plurality of clamping grooves are formed in the length direction of the placing base at intervals. A pressing plate is arranged in the integration box, a containing through groove for containing the placement seat is formed in the middle of the pressing plate in the width direction, elastic pressing pieces are arranged on the inner walls of the two sides of the containing through groove in the width direction, and the elastic pressing pieces on the two sides of the containing through groove in the width direction stretch into the corresponding clamping grooves and are arranged on the cylindrical protrusions of the corresponding ligation clamps in a pressed mode; a placing area I, a placing area II and a placing area III are arranged on the placing seat, a large-size ligature clip is placed in the placing area I, a medium-size ligature clip is placed in the placing area II, and a small-size ligature clip is placed in the placing area III. According to the technical scheme, the ligature clips of three specifications are integrated in the integration box, medical staff can directly take out the ligature clip of any required specification from the integration box conveniently, and operation is convenient and fast.

The present invention provides a clamp, which belongs to the technical field of medical devices, and includes a clamp head, a ligation clamp and a handle assembly, wherein the ligation clamp is installed in the clamp head, and the handle assembly is connected to the clamp head to drive the clamp head to open and close; the clamp head includes an upper clamp head and a lower clamp head, and a jaw is formed between the upper clamp head and the lower clamp head for installing the ligation clamp, and the upper clamp head and the lower clamp head form a clamping connection for the ligation clamp; a ligation clamp auxiliary rebound mechanism is also provided in the jaw; the ligation clamp auxiliary rebound mechanism is an arc-shaped spring sheet vertically installed in the jaw, and the natural opening and closing angles of the upper and lower ends of the spring sheet are not greater than the maximum natural opening and closing angle of the ligation clamp. The clamp of the present invention can ensure the rapid and accurate opening and closing of the ligation clamp during in vivo surgery, avoid the situation that the doctor needs to further finely control the clamp due to insufficient rebound force of the ligation clamp, thereby increasing the operation time and fatigue of the operation, and has high comfort in use.

The utility model discloses a clip applier. The clip applier comprises an elastic sheet fixedly arranged on a shell; the trigger is rotatably arranged on the shell so that the trigger can rotate to one of the initial position, the clamp feeding position and the clamping closing position, the clamp feeding position is located between the initial position and the clamping closing position in the rotating direction of the trigger, the elastic piece is located on the side, away from the initial position, of the trigger, and when the trigger rotates to the clamp feeding position from the initial position, the trigger abuts against the elastic piece. The elastic piece is arranged on the shell and located on the side, away from the initial position, of the trigger, and when the trigger rotates to the clamp feeding position from the initial position, the trigger abuts against the elastic piece, so that the trigger is subjected to counter-acting force in the rotating direction of the trigger, a user is reminded of force, and the user stops pressing the trigger at the clamp feeding position in time; the ligature clip can be conveniently and accurately conveyed to a surgical tissue part, so that the success rate and efficiency of the surgery are improved, the clip applier is prevented from continuously conveying the ligature clip, and the ligature clip is prevented from being wasted.

The utility model relates to a ligation clamp with a double-clamping-arm structure, which comprises a ligation clamp body and an upper clamping arm and a lower clamping arm. The rear ends of the upper clamping arm and the lower clamping arm are hinged, and the front ends are locked by a locking structure; the side walls of the front parts of the upper clamping arm and the lower clamping arm are provided with clip applier grasping columns; a first groove which is concave upwards and extends in the front-back direction is formed in the middle of the clamping face of the upper clamping arm. And a second groove which is sunken downwards and extends in the front-back direction is formed in the middle of the clamping surface of the lower clamping arm. The U-shaped ligature clip has the advantages that the groove structure is additionally arranged on a traditional U-shaped ligature clip structure, an upper clamping arm structure and a lower clamping arm structure are further derived, the clamping closing effect that one-time clamping closing is equal to clamping closing of two ligature clips can be achieved through the upper clamping arm structure and the lower clamping arm structure, the problems of slipping and automatic bouncing after installation and closing are avoided, and the ligature clip is convenient to use. And meanwhile, the operation of secondary clamping closing is omitted.

The utility model discloses an absorbable ligation clamp reliable in clamping and closing, and belongs to the field of medical instruments. The absorbable ligation clamp reliable in clamping and closing comprises a first clamping arm and a second clamping arm, the near ends of the first clamping arm and the second clamping arm are connected through a connecting part, and the far end of the first clamping arm and the far end of the second clamping arm are provided with a locking structure used for closing the ligation clamp and a positioning structure used for being matched with a clip applier respectively. The opposite inner side clamping faces of the first clamping arm and the second clamping arm are arc-shaped convex faces protruding inwards, and the outer side faces, opposite to the corresponding inner side clamping faces, of the first clamping arm and the second clamping arm are arc-shaped convex faces protruding outwards. The outer side surfaces of the clamping arms of the ligation clamp adopt the arc-shaped convex surface design, and the outer sides of the clamping arms are arched outwards, so that the overall structural strength of the clamping arms can be improved, and the closing force of the ligation clamp is improved; the arc-shaped convex surfaces can be in contact with the bottom walls of the accommodating grooves of the forceps head arms in the clamping and closing process to reduce deformation of the clamping arms, so that the problem that the ligation clip cannot be closed due to large deformation of the clamping arms is solved, meanwhile, the percussion force of the clip applier can be improved, the strength of the clamping arms during closing is ensured, ligation of blood vessels and body cavity tissues is more reliable, and the ligation efficiency is improved. And the bleeding and leakage phenomena are avoided.

The invention relates to a ligating device for ligating blood vessels for an operation and a filling method of a ligating lock, and relates to the technical field of medical instruments. Comprising a ligature operation assembly, ligature forceps, an automatic filling assembly and a ligature lock. The ligature forceps are arranged on the ligature operation assembly; the automatic filling assembly is arranged on the ligation operation assembly; the multiple ligation locks are arranged, and the multiple ligation locks are arranged on the automatic filling assembly. A plurality of ligation locks are arranged on the automated loading assembly. During use, a plurality of ligature locks can be sequentially loaded onto the ligature forceps by the automatic loading assembly. After an operator operates the ligature operation assembly to close the ligature forceps, the ligature forceps are opened, and the automatic filling assembly can automatically convey the next ligature lock to the ligature forceps, so that the next ligature operation can be conveniently carried out. In the whole process, automatic filling of the ligature lock on the ligature forceps is achieved, and the problem that when an existing ligature device conducts ligature operation, the ligature lock needs to be repeatedly pulled out of the body of a patient to conduct filling of the ligature lock is solved.

A surgical ligation clip includes a first jaw, a second jaw, and a hinge portion that pivotably couples the first jaw to the second jaw. The first and second jaws define respective clamping surfaces and include spaced bosses. Each of the spaced bosses include a transverse portion and a head portion that is oversized and has a diameter that is larger than the diameter of the transverse portions. The oversized head portions allow for the ligation clips to be securely supported on a clip applicator.

Provided are an absorbable biomedical polymer material, a ligation clip, and a method for preparing same. The ingredients selected for the absorbable biomedical polymer material consist of a first polymer and a second polymer. The first polymer consists of 50 wt%-100 wt% of poly(L-lactide) and 0 wt%-50 wt% of polyglycolide, and the second polymer is poly(p-dioxanone). The absorbable biomedical polymer material has suitable rigidity and flexibility, and can be used in preparing a medical device, such as a ligation clip. In particular, when containing 2.5 wt%-40 wt% of the first polymer, the ligation clip can readily pierce the fascia, and is less likely to undergo plastic deformation at a bend. Also disclosed are some structural forms of ligation clips and a method for preparing same.

The utility model relates to the field of medical instruments, in particular to a clip applying device suitable for a double-layer ligature clip. Comprising a handle part, a push tube, an outer tube and a ligation clip placing part, wherein the handle part comprises a movable handle and a fixed handle; the push pipe comprises a front push rod, a connecting rod and a rear push rod; the outer pipe is sleeved outside the push pipe; a ligation clip placing part limiting structure is arranged at the far end of the outer tube; a springback structure is arranged in the outer pipe; the ligature clip placing part comprises an outer sleeve and a piston; the double-layer ligature clip can be placed in the outer sleeve by the aid of the ligature clip placing portion, the piston can be pushed by the front ejector rod, the double-layer ligature clip can be operated by the piston, and the push tube cannot be in direct contact with the ligature clip and cannot be contaminated by blood generated in an operation. The placing part limiting structure can limit the outer sleeve, and the outer sleeve is prevented from falling off in the operation process; the clip applying device can be repeatedly used due to the springback structure, so that the cost is reduced.

An intraoperative clamp loading device includes an elongated body that can be positioned at the surgical site via a cannula during endoscopic surgery to supply a ligation clamp to a clamp applicator. The elongated body includes structures for supporting and advancing the ligation clamp within the elongated body.

The utility model relates to an electric continuous ligation clip applier, a main body of the electric continuous ligation clip applier is a continuous ligation clip applier, the continuous ligation clip applier is divided into a clip applying part and a percussion part, and the percussion part controls a push rod in the clip applying part to move back and forth so as to realize the actions of clamping, slightly closing a forceps head and closing the forceps head; the cutting assembly comprises a cutter, an electromagnetic valve, a main control board, a power supply and a cutting button; the main control board and the power supply are arranged in the percussion part and are electrically connected with each other; the cutting button is mounted on the outer side wall of the percussion part and is electrically connected with the main control board; the electromagnetic valve is arranged on the inner wall surface of the front end of the sleeve of the clamping applying part and is electrically connected with the main control board; and the cutter is connected with the electromagnetic valve and is arranged on the side edge of the clamp head of the clamp applying part. According to the continuous ligation clip applier, the tool bit which is independently controlled is arranged on the continuous ligation clip applier in a matched mode, continuous ligation, clip applying and cutting can be integrated, operation efficiency is improved, and operation time is shortened.

The utility model discloses a clip applier. The clip applier comprises an elastic sheet which is rotatably arranged on a shell; the trigger is rotatably arranged on the shell so that the trigger can rotate to one of the initial position, the clamp feeding position and the clamping closing position, and the rotating axis of the elastic piece is parallel to the rotating axis of the trigger. The stop rod is arranged on the trigger, the stop rod is suitable for abutting against the elastic piece to enable the elastic piece to deform in the process that the trigger rotates from the initial position to the clamp feeding position, and when the trigger rotates to the clamp feeding position, the stop rod is separated from the elastic piece to enable the elastic piece to vibrate and produce sound; in the process that the trigger rotates from the clamping position to the initial position, the stop rod is suitable for abutting against the elastic piece to drive the elastic piece to rotate so that the elastic piece can avoid the stop rod. Therefore, an obvious prompt can be given out when the clip applier conveys the clip to the forceps head, so that a user stops pressing the trigger at the clip conveying position in time, the ligature clip can be conveniently and accurately conveyed to an operation tissue part, the success rate and efficiency of an operation are further improved, the clip applier is prevented from continuously conveying the ligature clip, and waste of the ligature clip is avoided.

The present invention relates to an absorbable human duct tissue ligation clamp, which is made of biodegradable material and includes a V-shaped buckle arm and a closing arm. The front end of the buckle arm is provided with a puncture head, and the puncture head is provided with a buckle hook. The closing arm is provided with a buckle tongue that matches the buckle hook to achieve the fixation of the buckle arm and the closing arm. The outer sides of the front ends of the buckle arm and the closing arm are respectively provided with fixed columns. The outer sides of the buckle arm are provided with a first pulling column, and the outer sides of the closing arm are provided with a second pulling column. During the closing process of the ligation clamp, the first pulling column and the second pulling column can respectively pull and drive the corresponding fixed column to quickly fall off from the clamp applier, thereby achieving the falling off of the ligation clamp in the clamp applier. The ligation clamp of the present invention has a simple structure, a compact design, and is easy to use. The locking structure of the buckle hook and the buckle tongue improves the stability of the ligation clamp after closing. During the closing process, the pulling column pulls the fixed column to separate the ligation clamp from the clamp applier, and smoothly completes the clamping action.

The utility model belongs to the technical field of medical instruments, and particularly relates to a force transmission structure of a continuous clip applier. The utility model provides a continuous clip applier force transmission structure which aims at solving the problem that in the prior art, a novel clip applier structure needs to be designed urgently to further reduce the diameter of an outer rod, and comprises a control part, a clip head part, a ligation clip conveying channel, a clip pushing force transmission mechanism and a clip head force transmission mechanism. The ligation clamp conveying channel adopts the design that a hollow flat special-shaped steel framework serves as a core framework, the clamp pushing force transmission mechanism and the clamp head force transmission mechanism are combined and installed in the mode of being tightly attached to or embedded into the ligation clamp conveying channel, and meanwhile connection of the force transmission mechanisms, the clamp conveying mechanism and the clamp head part is integrated through the U-shaped fixing inserting groove. The space utilization rate is improved, and the effect that the structural size is smaller under the same function is achieved. Meanwhile, flat steel wires are adopted as components such as the clamp push rod and the like, the components are connected in an inserting mode, a matched and applicable new force transmission scheme is developed, and the size is further reduced.

A ligation clip comprising a first beam having a first end portion, a second end portion, and a first clamping surface positioned between the first and second end portions, the first end portion including a first mating feature and the second end portion including first locking structure, a second beam having a first end portion, a second end portion, and a second clamping surface positioned between the first and second end portions, the first end portion of the second beam including a second mating feature and the second end portion of the second beam including second locking structure, the second mating feature adapted to be coupled to the first mating feature to couple the first beam to the second beam, wherein the first beam is movable in relation to the second beam to move the ligation clip from an open position to a clamped position, the first locking structure being adapted to engage the second locking structure to secure the ligation clip in the clamped position, wherein the first mating feature includes a first body supporting a projection and the second mating feature includes a second body defining a first through bore that is dimensioned to receive the projection to couple the first beam to the second beam; wherein the first body of the first mating feature defines a first flat surface that is contiguous with the first clamping surface of the first beam and the second body of the second mating feature defines a second flat surface that is contiguous with the second clamping surface of the second beam, the first flat surface being in juxtaposed abutting relation with the second flat surface when the first and second mating features are coupled together.

The application provides a ligature clip and a clip storage device, wherein a proximal part of a closed tail of the ligature clip is provided with a socket rearward for a push clip head insertion slot, and the insertion slot is located at a middle part of the closed tail in a vertical direction; the insertion slot comprises a first guide slot and a first insertion slot which are sequentially communicated from proximal to distal, the first guide slot has oppositely arranged first and second slot openings, the first guide slot is communicated with the first insertion slot through the second slot opening, the size of the first slot opening in the vertical direction is greater than the size of the second slot opening in the vertical direction, the first insertion slot has a slot bottom and oppositely arranged first and second slot walls, the first slot wall is used for abutting an upper surface of the push clip head, the second slot wall is used for abutting a lower surface of the push clip head, and the slot bottom is used for abutting the push clip head to make the clip sending more stable.

The invention discloses a ligation device and a using method thereof, and relates to the technical field of medical instruments, the ligation device comprises a double-layer absorbable ligation clip and a clip applier, the double-layer absorbable ligation clip comprises an outer sleeve, a piston, an inner-layer clip and an outer-layer clip, the front end of the outer sleeve is provided with a V-shaped opening part, the V-shaped opening part is elastic, so that the V-shaped opening part can be folded and unfolded, and the clip applier is arranged in the outer sleeve. The inner-layer clamp, the outer-layer clamp and the piston are sequentially arranged in the outer sleeve from front to back, and when the piston pushes the outer-layer clamp forwards, the outer-layer clamp can enable the inner-layer clamp to be closed; the clip applier comprises a fixing mechanism, an excitation mechanism, an outer pipe, an inner pipe, an elastic component limiting pile, a pushing mechanism, an ejection mechanism, a first elastic reset component and a second elastic reset component. According to the ligation device and the using method thereof, the tubular tissue with the pipe diameter of 3-10 mm can be closed efficiently, conveniently, safely and reliably without adopting a puncture cannula with a larger pipe diameter, so that the double-layer absorbable ligation clamp can reach a larger pipe diameter closing range.

The application discloses a ligature clamp, and relates to the technical field of medical devices, which comprises a first clamp arm and a second clamp arm, the length direction of both of which is respectively provided with an elastic connecting part and a locking unit at both ends; the opposite inner sides of the first clamp arm and the second clamp arm form a clamping surface for clamping a ligature tissue; the clamping surface is sequentially provided with an anti-falling locking area, a gradual transition area and a pressure reduction buffer area along the transverse width direction, the contact proportion of the surface microstructure of each area to the ligature tissue sequentially decreases, so that the ligature tissue is sequentially weakened in stress and is limited and clamped; the ligature clamp can realize gradual clamping, reduces local high pressure concentration while ensuring the stability of the ligature, and reduces the risk of excessive compression on blood vessels or soft tissues; and the technical problem that the existing ligature clamp lacks a gradual clamping process and excessive compression on blood vessels or soft tissues due to local high pressure concentration exists in the clamping process is solved.

The application belongs to the technical field of medical devices, and particularly relates to a distributed feeding mechanism applied to a continuous clip applier. The application comprises a continuous clip applier main body, the continuous clip applier main body is provided with a pipe rod barrel, the pipe rod barrel is provided with a ligature clip conveying element and a distributed feeding type clamp head assembly. In the natural state during use, the distributed feeding type clamp head assembly is in a semi-closed state, the natural state of the clamp head in the structural design is semi-closed, the opening of the clamp head during loading is opened by the ligature clip, the clamp head and the ligature clip always maintain contact during the opening process, and the mechanism for driving the clamp head to close does not retreat again during one clip application process, does not have additional system impact, is reasonable in structure, and is relatively strong in practicality.

A ligation clip loading device includes a cannula including a cannula body and an instrument lumen extending through a longitudinal axis of the cannula body, and a stack of ligation clips axially arranged about the instrument lumen. The ligation clips are accessible through a series of slots allowing for loading of an endoscopic clip applier with the ligation clips within a body cavity, such as an intra-abdominal cavity.

The utility model discloses a clip applier. The clip applier comprises a tube body assembly, a jaw assembly and a handle assembly, the tube body assembly is provided with a near end and a far end and comprises an inner tube assembly, an outer tube assembly arranged on the outer side of the inner tube assembly in a sleeving mode and a feeding assembly located in the inner tube assembly, and the feeding assembly contains a ligation clip; the jaw assembly is connected to the far end of the tube body assembly; the handle assembly is connected to the near end of the tube body assembly and comprises a feeding handle, and the feeding handle is configured to control the outer tube assembly and at least part of the feeding assembly to move in the axial direction of the tube body assembly so as to control the feeding assembly to convey the ligation clips to the jaw assembly and / or control the jaw assembly to be in a semi-closed state or an open state. The clip applier is simple to operate, easy to control and safer to use.

The invention relates to the technical field of structural optimization of medical instruments, in particular to a design method and system for increasing the size of the inner side wall of a through area at the connecting position of clamping arms of a ligature clip, and the method comprises the steps: extracting the elastic rebound speed of the ligature clip when the ligature clip is released from a clip bin under the set ligature clip structural size according to a shooting result of high-speed shooting; the structure size, the material parameters and the elastic rebound speed of the ligature clip serve as input, the maximum thickening amount and the position of the inner side wall of the ligature clip and two kinds of outer side wall stress generated when the clip arms are opened to the maximum angle and contained in the clip bin are output through the prediction model; and generating a thickness gradient change scheme of the inner side wall from the position of the inner side wall to the free ends of the two clamping arms by adopting a self-adaptive topological optimization algorithm in three-dimensional model software. According to the invention, the problem that the thickness adjustment of the inner side wall at the joint of the clamping arms of the ligature clamp is uncontrollable is effectively solved, the dynamic performance, the structural strength and the clinical operability of the ligature clamp are collaboratively optimized, and the accurate adjustment of the thickness of the inner side wall at the joint of the clamping arms of the ligature clamp is realized.

The invention discloses an anti-falling absorbable ligation clip which comprises an inner clip (1) and an outer clip (2), the inner clip (1) is provided with two inner clip arms (11) capable of being pressed and closed, the outer clip (2) is provided with two outer clip arms (21) for pressing and closing the inner clip arms (11) of the inner clip (1), a closed sleeve (13) is arranged on the outer sides of the two inner clip arms (11) of the inner clip (1), and the inner clip arms (11) of the inner clip (1) are sleeved with the outer sleeve (13). When the outer clamping arm (21) presses and closes the inner clamping arm (11), the outer clamping arm (21) of the outer clamp (2) is arranged in the sleeve (13) in a penetrating mode and slides. According to the sleeve structure, slipping between the inner clamp and the outer clamp can be thoroughly avoided, and therefore the problem that in the prior art, buckling of the inner clamp and the outer clamp fails is thoroughly avoided. Besides, burrs are further arranged on the inner clamp, and when force operation is carried out, even if shaking occurs, the burrs can generate certain blocking force on the tissue, so that the technical requirements of personnel are reduced, and the operation precision is improved.