CN115281765A - Tissue clamping device and tissue clamping system - Google Patents

Abstract

The application discloses tissue clamping device includes: a sleeve assembly having a passage extending therethrough from a distal end side to a proximal end side, at least a portion of the passage being axially divided into an upper chamber and a lower chamber; the first clamping piece assembly and the second clamping piece assembly are at least partially arranged in the channel of the sleeve assembly and are respectively distributed in the upper chamber and the lower chamber of the sleeve assembly; the first and second jaw assemblies are movable proximally and distally relative to the sleeve assembly, respectively, to clamp and release tissue. The tissue clamping and closing system comprises the tissue clamping and closing device, a pushing component and an operating component. The operating part controls the pushing part to move, and when the pulling force applied to the pushing part is larger than the combining force between the pushing part and the first clamping piece assembly and the second clamping piece assembly, the first clamping piece assembly and the second clamping piece assembly are separated from the combining part of the pushing part.

Description

Tissue clamping device and tissue clamping system

Technical Field

The invention relates to the technical field of medical instruments, in particular to a tissue clamping device and a tissue clamping system.

Background

The tissue clamping system is a minimally invasive surgical instrument and is commonly used for clamping wound surfaces in a patient body, such as digestive tract perforation and the like. The tissue clamping system can enter a surgical target position in a patient body through an endoscope instrument channel, clamping operation is carried out in vitro, and a front-end clamping component of the tissue clamping system can be separated from the system body and close tissues. Generally, the wound surface is gradually healed, local inflammation occurs to form granuloma, and the jaw members fall off automatically and are discharged out of the body through the digestive tract.

The tissue clamping system generally includes a jaw member, a pushing member, and an operating member. In clinical use, the jaw component and the pushing component can be sent into the alimentary canal of a patient through an endoscope instrument channel, so that the jaw component reaches a surgical target position in the body of the patient, surgical actions are implemented through the operating component, and the implemented surgical actions are transmitted to the jaw component through the pushing component to drive the jaw component to generate actions, and hemostasis or clamping operation is performed on a surgical wound. Then the jaw component is separated from the pushing component through the operating component, so that the jaw component remained in the body of the patient clamps surrounding tissues, and the purpose of closing the wound surface is achieved. The forceps holder part is a metal clip of two-arm forceps clamping pieces, the two edges of the wound surface are respectively hooked and pulled by opening the two-arm forceps clamping pieces, then the two-arm forceps clamping pieces are folded towards the center by operation, and the two-arm forceps clamping pieces are locked and fixed to keep a holding state, so that the wound surface is folded.

For the treatment of oversized wounds, such as suturing large wounds with a diameter of over 50mm, purse string suturing is usually performed by using a tissue clamping device in combination with a nylon rope. Firstly, an annular nylon rope is screwed, then a dense piling mode is adopted along the nylon rope on the periphery of the wound surface, and a plurality of metal clamps are required to be placed and clamped at the positions required by the tissues; because the metal clips simultaneously clip the nylon rope loop line and the wound surface tissue, and finally all the metal clips together with the nylon rope loop line and the wound surface tissue are folded when the nylon rope loop is tightened. The existing sewing metal clip is suitable for the method for sewing the purse. However, the method has high requirements on equipment, great operation difficulty and long operation time. Endoscopic devices requiring special dual instrument channels may allow the simultaneous entry of the tissue clamping device and nylon tether into the body. In addition, the method has complex operation details, and if the nylon rope is tightened, the metal clip part can turn and sink in the wound surface, so that the metal clip is not beneficial to natural falling off after operation.

The opening width of the two clamping pieces which are opened after the existing tissue metal clamp reaches a lesion part is limited, the opening width is about 11mm generally, and the whole wound surface cannot be covered for an oversized wound surface with the diameter exceeding 50 mm; secondly, in the existing tissue metal clip closing mode, the front ends of the two arm clips of the jaw component are usually hooked and pulled to the middle points of the two edges of the wound surface respectively for fixing, so as to achieve the effects of quickly aligning and reducing the wound surface.

Therefore, there is a need for an improved tissue clamping device and tissue clamping system that can solve the problem of large wound surface clamping.

Disclosure of Invention

In view of the complement of the prior art, the invention provides a tissue clamping device and a tissue clamping system, which improve the success rate and treatment efficiency of large wound surface clamping.

In order to achieve the above object, the present invention provides the following technical solutions:

a tissue fastening device comprising: a sleeve assembly having a passage extending therethrough from a distal end side to a proximal end side, at least a portion of the passage being axially divided into an upper chamber and a lower chamber; a first clip member including a pair of first clips disposed symmetrically and first connecting arms located at base end sides of the first clips to connect the first clips to each other; the second clamping piece assembly comprises a second clamping piece and a second connecting arm positioned on the base end side of the second clamping piece; the first and second clip assemblies are at least partially disposed within the channel of the sleeve assembly and distributed in the upper and lower chambers of the sleeve assembly, respectively; the first and second jaw assemblies are movable proximally and distally relative to the sleeve assembly, respectively, to clamp and release tissue.

Preferably, the sleeve assembly comprises a sleeve body, a partition plate and a connecting piece, the partition plate is inserted into the sleeve body to divide a channel in the sleeve body into an upper chamber and a lower chamber, and the connecting piece is used for fixedly connecting the partition plate with the sleeve body.

Preferably, a pair of convex parts are symmetrically arranged on the left cavity wall and the right cavity wall of the lower cavity, and the convex parts protrude from the surfaces of the left cavity wall and the right cavity wall to the inner cavity of the lower cavity; the first connecting arm of the first clip assembly can move towards the base end side of the lower cavity and pass over the bulge until the bent part of the first connecting arm is matched with the bulge so as to keep the first clip assembly in a clamping state.

Preferably, the bottom cavity wall of the lower cavity is provided with a fixing column, and the connecting piece can penetrate through the fixing column so as to be connected with the partition board.

Preferably, a limit step is arranged on the top cavity wall of the upper cavity close to the base end side, and the limit step protrudes from the surface of the top cavity wall to the inner cavity of the upper cavity; the second connecting arm of the second clamping piece assembly can move towards the base end side of the upper cavity until the clamping portion of the second connecting arm is matched with the limiting step, so that the second clamping piece assembly is kept in a clamping state.

Preferably, the first connecting arm is made of an elastic material, and portions of the first connecting arm near the base end side of the first clip piece are recessed toward each other to form a bent portion; the bottom center of first linking arm sets up first joint portion, first joint portion can with control first clamping piece presss from both sides to close and releases the first traction wire separation connection of tissue.

Preferably, the second connecting arm is made of an elastic material, and a clamping part is arranged at a position, close to the base end side, of the second connecting arm; the bottom of the second connecting arm is provided with a second clamping portion which can be separately connected with a second traction steel wire for controlling the second clamping piece to clamp and release tissues.

Preferably, the distal end sides of the first clamping piece assembly and the second clamping piece of the second clamping piece assembly are provided with clamping and closing hooks.

Preferably, when the first clip assembly and the second clip assembly clamp tissues, the clamping hook claws are mutually engaged and are positioned on the same plane.

The present invention also provides a tissue clamping system comprising: the tissue clamping device; the pushing component is used for respectively controlling the clamping and releasing of a first clamping piece component and a second clamping piece component of the tissue clamping and closing device, and the pushing component is provided with a combining part which is respectively and detachably connected with the first clamping piece component and the second clamping piece component; the operating component is connected to the pushing component and used for applying acting force to the pushing component, and the operating component controls the pushing component to move so that the first clamping piece assembly and the second clamping piece assembly of the tissue clamping and closing device are clamped and released; when a tensile force applied to the push member is greater than a coupling force between the push member and the first and second clip assemblies, the first and second clip assemblies are separated from the coupling portion of the push member.

Preferably, the pushing member includes an outer sheath tube having a lumen extending therethrough from a distal end side to a proximal end side, and a pull wire assembly that is passable through the lumen of the outer sheath tube, the pull wire assembly including a first pull wire and a second pull wire; the far end side of the first traction steel wire is provided with a first combining part which is detachably connected with a first clamping part arranged at the center of the bottom of the first connecting arm; the far-end side of second traction steel wire sets up the second joint portion, the second joint portion with the second joint portion separable connection that second linking arm bottom center set up.

Preferably, first joint portion and second joint portion are the joint and tie, first joint portion and second joint portion are for having the ring opening hole of open end, the joint tie with ring opening jogged joint, and can pass through under operating means's the effort open end of ring opening hole is followed ring opening hole separation.

Preferably, the operation member includes an operation portion main body and two independently provided sliders, the operation portion main body is attached to a base end side of the pushing member, and the operation portion main body is provided with a window; the sliders are connected to the wire pulling unit of the pushing member, are respectively fitted into the windows of the operation portion main body, and are provided so as to be slidable in the axial direction with respect to the operation portion main body.

The tissue clamping device and the tissue clamping system provided by the invention have the advantages that the two clamping piece assemblies are independently arranged, one clamping piece assembly is provided with the pair of symmetrically arranged clamping pieces, the other clamping piece assembly is provided with the clamping piece, the wound surface is closed in a three-point mode through the mutual matching of the two clamping piece assemblies which are independently arranged, and the effect of quickly reducing or closing the wound surface is achieved. The tissue clamping device and the tissue clamping system with the structure can improve the success rate and the treatment efficiency of large wound surface clamping, can also be suitable for a conventional single-instrument channel endoscope, and are more favorable for popularization and application in clinic.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view of a tissue clamping system in an embodiment of the invention.

FIG. 2 is an exploded view of a tissue fastening device in accordance with an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a sleeve assembly of a tissue fastening device in accordance with an embodiment of the present invention.

FIG. 4 is an axial cross-sectional view of the lower chamber of the tissue fastening device of the present invention, wherein the first closure element of FIG. 4a is in a released state and the first closure element of FIG. 4b is in a fastened state.

FIG. 5 is a radial cross-sectional view of a tissue fastening device in an embodiment of the present invention, wherein the second fastening component of FIG. 5a is in a released state and the second fastening component of FIG. 5b is in a fastened state.

FIG. 6 is a two-jaw configuration of a tissue fastening device in accordance with an embodiment of the present invention, wherein FIG. 6a is a first jaw assembly and FIG. 6b is a second jaw assembly.

FIG. 7 is a perspective view and a top view of a tissue fastening device in accordance with an embodiment of the present invention after closure.

Fig. 8 is an exploded view of a tissue fastening system in accordance with an embodiment of the present invention.

FIG. 9 is a radial cross-sectional view of a tissue fastening system in an embodiment of the invention.

FIG. 10 is a schematic diagram of a three-sided closing operation of the tissue fastening system in an embodiment of the invention.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be construed as limiting the invention.

Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.

According to one general technical concept of the present invention, there is provided a tissue fastening device, including: a sleeve assembly having a passage extending therethrough from a distal end side to a proximal end side, at least a portion of the passage being axially divided into an upper chamber and a lower chamber; a first clip piece assembly including a pair of first clip pieces symmetrically arranged and first connecting arms located at base end sides of the first clip pieces to connect the first clip pieces to each other; the second clamping piece assembly comprises a second clamping piece and a second connecting arm positioned on the base end side of the second clamping piece; the first and second clip assemblies are at least partially disposed within the channel of the sleeve assembly and distributed in the upper and lower chambers of the sleeve assembly, respectively; the first and second jaw assemblies are movable proximally and distally relative to the sleeve assembly, respectively, to clamp and release tissue.

According to another general technical concept of the present invention, there is provided a tissue fastening system, including: the tissue clamping and closing device comprises a pushing component and a clamping and closing component, wherein the pushing component is used for respectively controlling the clamping and closing and the releasing of a first clamping piece assembly and a second clamping piece assembly of the tissue clamping and closing device; and the operating component is connected to the pushing component and is used for applying acting force to the pushing component, and the operating component controls the pushing component to move and release the first clamping piece assembly and the second clamping piece assembly of the tissue clamping and closing device, and finally separates the tissue clamping and closing device from the combined part of the pushing component.

Fig. 1 shows a perspective view of a tissue fastening system according to an exemplary embodiment of the present invention, and fig. 2 shows an exploded view of a tissue fastening device according to an exemplary embodiment of the present invention.

As shown in fig. 1-3, in the illustrated embodiment, the tissue clamping device 100 generally includes a sleeve assembly 110, a first jaw assembly 120, and a second jaw assembly 130.

In the illustrated embodiment, the sleeve assembly 110 has a passage 111 extending through it from the distal end side to the proximal end side, wherein at least a partial region of the passage 111 is axially divided into an upper chamber 113 and a lower chamber 114. The partial region (distal portion) of the passage 111 is shown as being divided into two chambers, the rear end being left undivided in view of the need to accommodate the haul cable. It should be noted that the illustration is only preferred, and all areas of the channel may be divided into an upper chamber and a lower chamber according to actual requirements.

The first and second clip elements 120, 130 are at least partially disposed within the channel 111 of the sleeve element 110 and are distributed within the upper and lower chambers 113, 114 of the sleeve element 110, respectively. By way of example, the two clips of the two clip assemblies 120, 130 may be disposed outside of the sleeve assembly 110, and the connecting arms connecting the clips may be partially or fully disposed within the sleeve assembly 110.

The first and second jaw assemblies 120, 130 are movable proximally and distally relative to the sleeve assembly 110, respectively, to effect tissue clamping upon proximal movement and tissue release upon distal movement. The upper and lower chambers 113 and 114 can be independently opened to independently receive the force of the pushing member 200 to perform the clamping and releasing actions. Through the structural layout of the upper cavity and the lower cavity, the two clamping pieces of the first clamping piece assembly 120 can be opened and closed along the axial direction of the lower cavity, the clamping pieces of the first clamping piece assembly 130 can be opened and closed along the radial direction of the upper cavity, and the whole body is arranged in a T shape, so that the three-point type wound surface closing can be realized. It should be noted that, in the embodiment of the present invention, the upper chamber 113 and the lower chamber 114 are in the upper and lower directions or in the top and bottom directions (e.g., top chamber wall and bottom chamber wall), and the direction perpendicular to the upper chamber 113 and the lower chamber is the left and right directions (e.g., left chamber wall and right chamber wall).

In preferred embodiments, as shown in fig. 2 and 3, the sleeve assembly 110 includes a sleeve body 115, a spacer 116, and a connector 117. The sleeve body 117 has a passage 111 formed therein. The partition 116 is inserted into the sleeve body 115 to divide the passage 111 in the sleeve body 115 into an upper chamber 113 and a lower chamber 114. After the partition 116 is inserted into the sleeve body 115, it is fixedly connected to the sleeve body 115 by a connecting member 117. By way of example, the connection 117 may be a bolt, a rivet, or the like. During assembly, a through hole may be formed in an outer wall of the sleeve body 115, and the connecting member 117 may be inserted into the through hole to enter the passage of the sleeve body 115 and be connected to the partition 116.

In some preferred embodiments, as shown in fig. 4a and 4b, the left and right walls of the lower chamber 114 are symmetrically provided with a pair of protrusions 114a, 114b. The protrusions 114a, 114b each protrude from the surface of the corresponding chamber wall toward the inner cavity of the lower chamber 114. The first connecting arm 122 of the first clip assembly 120 moves toward the base end side of the lower chamber 114 and passes over the above-mentioned protrusions 114a, 114b until the bent portions 122a, 122b of the first connecting arm 122 engage with the protrusions 114a, 114b, thereby holding the first clip assembly 120 in the clamped state.

In some preferred embodiments, the bottom wall of the lower chamber is provided with a fixing post 114c. The fixing posts 114c prevent the first connecting arms 122 from being excessively pressed by the protrusions 114a and 114b, which in turn causes the first clamping pieces 121a and 121b to be opened. The fastening post 114c may be centrally disposed on the bottom chamber wall, i.e., protruding from the bottom chamber wall toward the inner chamber. The fixing post 114c may be cylindrical in shape. When the fixing post 114c is provided, the connecting member 117 may penetrate the fixing post 114c and be connected with the partition 116.

In some preferred embodiments, as shown in fig. 5a and 5b, the top wall of the upper chamber 113 is provided with a locking portion 132a near the base end side of the upper chamber 113. The locking portion 132a protrudes from the surface of the ceiling wall into the inner cavity of the upper chamber 113. The second connecting arm 132 of the second clip element 130 moves toward the base end side of the upper chamber 113 until the limit step 113a of the second connecting arm 132 engages with the locking portion 132a, thereby keeping the second clip element 130 in the clipped state. By way of example, the stop step 113a is "T" shaped, i.e., a lug-like structure is provided at the distal end. When the first clamping assembly 130 is moved from the distal side to the proximal side, i.e., the retraction operation is performed to clamp the tissue, the locking portion 132a moves to the position below the lug-shaped structure of the limiting step 113a and cooperates therewith to achieve the locking clamping.

In the embodiment of the present invention, as shown in fig. 6a, the first jaw assembly 120 includes a pair of first jaws 121a, 121b disposed symmetrically, and a first connecting arm 122 at a base end side of the first jaws 121a, 121b to connect the two first jaws to each other.

In some preferred embodiments, the first connecting arm 122 is made of a resilient material. The first connecting arm 122 includes two open wings connected to the first clamping pieces 121a and 121b, respectively, and an arched bottom. Wherein the portions of the first connecting arm 122 near the first clamping pieces 121a and 121b, i.e., the two wing portions of the opening, are recessed toward each other (or toward the center of the arched bottom) to form bent portions 122a and 122b. The curved portions 122a, 122b can mate with the raised portions 114a, 114b of the inner wall of the lower chamber 144. The first connecting arm 122 has a first engaging portion 122c at the bottom center, and the first engaging portion 122c is detachably connected to the first pull wire 231 for controlling the first clamping pieces 121a and 121b to close and release.

In the embodiment of the present invention, as shown in fig. 6b, the second clip assembly 130 includes a second clip 131 and a second connecting arm 132 located at a base end side of the second clip 131.

In some preferred embodiments, the second connecting arm 132 is made of a resilient material. The portion of the second connecting arm 132 near the second jaw 131 is bent inward to be in an arc-shaped flaring shape. The second connecting arm 132 is provided with a locking portion 132a at a position close to the proximal end side, the bottom of the second connecting arm 132 is provided with a second locking portion 132b, and the second locking portion 132b is detachably connected to a second traction wire 232 which controls the second clip 131 to clamp and release tissues.

In some preferred embodiments, as shown in fig. 7a, the distal end sides (i.e. the end sides contacting the tissue) of the first clamping pieces 121a and 121b of the first clamping piece assembly 120 and the second clamping piece 131 of the second clamping piece assembly 130 are provided with clamping hooks to enhance the tissue clamping capability of the two clamping pieces.

In some preferred embodiments, as shown in fig. 7b, when the two clip assemblies are closed to clamp the tissue, the top hook shapes of the first clip 121a, 121b and the second clip 131 are engaged with each other and are in the same plane, so as to further enhance the tissue clamping capability of the two clip assemblies.

Fig. 8 shows an exploded view of a tissue clamping system according to an exemplary embodiment of the present invention. Fig. 9 illustrates a cross-sectional view of a tissue clamping system according to an exemplary embodiment of the present invention.

As shown in fig. 8 and 9, in the embodiment of the present invention, the tissue fastening system includes the tissue fastening device 100, the pushing member 200 and the operating member 300.

In the illustrated embodiment, the pushing member 200 is used to control the clamping and releasing of the first and second jaw assemblies 120, 130 of the tissue clamping device 100, respectively. The push member 200 has engaging portions 210 that are detachably coupled to the first clip assembly 120 and the second clip assembly 130, respectively.

In the illustrated embodiment, an operating member 300, which is connected to the push member 200, is used to apply a force to the push member 200. The operating member 300 applies a force to the pushing member 200 to control the movement of the pushing member 200, and as the pushing member 200 moves, the first and second jaw assemblies 120, 130 of the tissue fastening device are clamped and released. When a tensile force applied to the push member 200 is greater than the coupling force between the first and second clip assemblies 120 and 130, the first and second clip assemblies 120 and 130 are separated from the coupling portions 210 of the push member 200, respectively.

In some preferred embodiments, in conjunction with the above-described fig. 4 and 5, the pushing member 200 includes an outer sheath 220 and a pull wire assembly 230. The outer sheath 220 has a lumen extending therethrough from the distal end side to the proximal end side, and the traction wire unit 230 is inserted into the lumen of the outer sheath 200 so as to be able to advance and retreat. By way of example, the tow wire assembly includes a first tow wire 231 and a second tow wire 232. A first coupling portion 210a is provided at a distal end side (i.e., an end close to the first clip assembly 120) of the first traction wire 231, and the first coupling portion 210a is detachably coupled to a first catching portion 122c provided at a bottom center of the first coupling arm 122. A second coupling portion 210b is provided at a distal end side (i.e., an end close to the second clip assembly 130) of the second traction wire 232, and the second coupling portion 210b is detachably coupled to a second catching portion 132b provided at a bottom center of the second connecting arm 132.

In some preferred embodiments, the coupling portion 210 is a snap pin. As shown in fig. 6, the first clip portion 122c and the second clip portion 132b are open-loop holes having open ends. The clamping bolt is connected with the open-loop hole, and when the acting force applied to the pushing component 200 by the control component 300 is greater than the deformation limit of the open-loop hole, the clamping bolt slides out of the open-loop hole, so that the tissue clamping and closing device 100 is separated from the pushing component 200.

In the illustrated embodiment, the operation member 300 is provided on the base end side of the pushing member 200. The operation member 300 includes an operation portion main body 310 and a slider 320. The operation portion main body 310 is attached to the proximal end side of the pushing member 200, and the operation portion main body 310 is provided with a window 330. The slider 320 is connected to the wire assembly of the pushing member 200, is fitted into the window 330 of the operation portion main body 310, and is provided so as to be slidable in the axial direction with respect to the operation portion main body 310. When the sliding member 320 slides in the axial direction, it drives the traction wire assembly to advance and retreat, thereby clamping and releasing the tissue clamping device. Since the pushing member 200 of the embodiment of the present invention needs to independently perform the clamping/releasing operation on the first clamping assembly 120 and the second clamping assembly 130, the sliding member 320 should also be independently disposed, and includes a first sliding member 320a and a second sliding member 320b, which respectively control the connection between the first clamping assembly 120 and the second clamping assembly 130. As shown in FIG. 9, first slider 320a has been withdrawn from the open loop aperture of first clamping assembly 120, effecting separation of first clamping assembly 120 from the tissue clamping system.

In some preferred embodiments, the tail of the main body 310 is provided with a finger hook for facilitating the holding of the tissue clamping system. The slider 320 may also be provided with a finger hook portion to facilitate the advancing and retreating operations.

The tissue clamping device and the tissue clamping system provided by the invention have the advantages that the two clamping piece assemblies are independently arranged, one clamping piece assembly is provided with the pair of symmetrically arranged clamping pieces, the other clamping piece assembly is provided with the clamping piece, the wound surface is closed in a three-point mode through the mutual matching of the two clamping piece assemblies which are independently arranged, and the effect of quickly reducing or closing the wound surface is achieved. The tissue clamping device and the tissue clamping system with the structure can improve the success rate and the treatment efficiency of large wound surface clamping, can also be suitable for a conventional single-instrument channel endoscope, and are more favorable for popularization and application in clinic.

The following will describe the operation method of the tissue clamping device and the tissue clamping system provided by the embodiment of the invention.

In clinical use, the tissue clamping device and the pushing component of the tissue clamping system can be sent into the alimentary canal of a patient through an endoscope instrument channel, so that the tissue clamping device reaches the operation target position in the body of the patient, and then the operation action is implemented through the operation component. The push-pull rod assembly is operated to push forwards respectively to drive the two traction steel wires of the push component to move and transmit the two traction steel wires to a first clamping piece assembly and a second clamping piece assembly of the tissue clamping device, the two clamping piece assemblies respectively execute opening actions, and the positions of the clamping pieces are adjusted through bending, advancing and retreating and the like of the endoscope so as to hook and pull the edge of the wound surface; the push-pull rod assembly is respectively operated to pull back, and the two traction steel wires of the pushing component are transmitted to the tissue clamping device to drive the two clamping piece assemblies of the tissue clamping device to respectively generate folding actions so as to hook and pull the edge of the wound surface to fold towards the center of the wound surface, thereby reducing or closing the wound surface. Further operating the push rod assembly to pull back, moving the first clamping piece assembly to a lower cavity of a sleeve assembly in the tissue clamping and closing device, and closing and locking the first clamping piece assembly through a pair of protrusions arranged in the lower cavity; the second clamping piece component is moved to an upper cavity of the sleeve component in the tissue clamping device, and the first clamping piece component is closed and locked through a clamping part arranged in the upper cavity. When the force applied to the pushing component by the operating component is greater than the combining force of the two clamping piece assemblies and the pushing component, the two clamping piece assemblies are separated from the pushing component, the operating space controls the pushing component to move to the outside of the body, and the tissue clamping device is remained in the body of the patient.

In some preferred embodiments, as shown in fig. 10, when clamping an oversized wound, the upper moderate span of the wound can be first aligned, and the first clamping piece assembly comprising a pair of symmetrically arranged clamping pieces is used to hook and pull the two edges of the wound to fold towards the middle of the wound through the movable adjustment of the endoscope, and the clamping piece assembly is locked. And then the wound surface edge on the vertical shaft with the symmetrically arranged clamping pieces is accurately found, the edge is hooked and pulled to fold towards the middle of the wound surface by using a second clamping piece assembly containing one clamping piece through the movable adjustment of the endoscope, the clamping piece assembly is locked, after the using effect is completed, the separating action of the two clamping piece assemblies and the pushing component is implemented, and then the pushing component is withdrawn to the outside of the body.

It will be appreciated by those skilled in the art that the embodiments described above are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle.

Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of preferred embodiments of the present invention and should not be construed as limiting the invention.

Although a few embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the appended claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. Furthermore, any reference signs in the claims shall not be construed as limiting the scope of the invention.

Claims (13)

1. A tissue clipping device, comprising:

a sleeve assembly having a passage extending therethrough from a distal end side to a proximal end side, at least a portion of the passage being axially divided into an upper chamber and a lower chamber;

a first clip piece assembly including a pair of first clip pieces symmetrically arranged and first connecting arms located at base end sides of the first clip pieces to connect the first clip pieces to each other;

the second clamping piece assembly comprises a second clamping piece and a second connecting arm positioned on the base end side of the second clamping piece;

the first and second clip assemblies are at least partially disposed within the channel of the sleeve assembly and distributed in the upper and lower chambers of the sleeve assembly, respectively; the first and second jaw assemblies are movable proximally and distally relative to the sleeve assembly, respectively, to clamp and release tissue.

2. The tissue clamping device of claim 1, wherein said sleeve assembly comprises a sleeve body, a partition and a connector, wherein said partition is inserted into said sleeve body to divide a channel in said sleeve body into an upper chamber and a lower chamber, and said connector fixedly connects said partition to said sleeve body.

3. The tissue clamping device of claim 2, wherein the left and right walls of the lower chamber are symmetrically provided with a pair of protrusions protruding from the surface of the left and right walls toward the inner cavity of the lower chamber; the first connecting arm of the first clip assembly can move towards the base end side of the lower cavity and pass over the protruding portion until the bent portion of the first connecting arm is matched with the protruding portion so as to keep the first clip assembly in a clamping state.

4. The tissue clamping device of claim 3 wherein said bottom wall of said lower chamber is provided with an anchor post, said connector extending through said anchor post for connection to said partition.

5. The tissue clamping device of claim 2, wherein the top cavity wall of the upper cavity is provided with a limiting step near the base end side, and the limiting step protrudes from the surface of the top cavity wall to the inner cavity of the upper cavity; the second connecting arm of the second clamping piece assembly can move towards the base end side of the upper cavity until the clamping portion of the second connecting arm is matched with the limiting step, so that the second clamping piece assembly is kept in a clamping state.

6. The tissue clipping device of claim 1, wherein the first connecting arm is made of a resilient material, and portions of the first connecting arm near the base end side of the first jaw are recessed toward each other to form a curved portion; the bottom center of first linking arm sets up first joint portion, first joint portion can with control first clamping piece presss from both sides to close and releases the first traction wire separation connection of tissue.

7. The tissue clamping device of claim 1, wherein the second connecting arm is made of an elastic material, and a clamping part is arranged at a position of the second connecting arm close to the base end side; the bottom of the second connecting arm is provided with a second clamping portion which can be separately connected with a second traction steel wire for controlling the second clamping piece to clamp and release tissues.

8. The tissue clamping device of claim 1, wherein distal sides of the first jaw assembly and the second jaw of the second jaw assembly are each provided with a clamping hook.

9. The tissue clamping device of claim 8, wherein said clamping jaws engage each other and are in the same plane when said first jaw assembly and said second jaw assembly clamp tissue.

10. A tissue clamping system, comprising:

the tissue fastening device of claims 1-9;

the pushing component is used for respectively controlling the clamping and releasing of a first clamping piece component and a second clamping piece component of the tissue clamping and closing device, and the pushing component is provided with a combining part which is respectively and detachably connected with the first clamping piece component and the second clamping piece component;

an operating member connected to the pushing member for applying a force to the pushing member, the operating member controlling the pushing member to move so that the first and second clip assemblies of the tissue clamping device are clamped and released; when a tensile force applied to the push member is greater than a coupling force between the push member and the first and second clip assemblies, the first and second clip assemblies are separated from the coupling portion of the push member.

11. The tissue clamping system of claim 10, wherein said pusher member comprises an outer sheath having a lumen therethrough from a distal side to a proximal side, and a pull wire assembly passable through the lumen of said outer sheath, said pull wire assembly comprising a first pull wire and a second pull wire; a first combining part is arranged on the far end side of the first traction steel wire and is detachably connected with a first clamping part arranged in the center of the bottom of the first connecting arm; the far-end side of second traction steel wire sets up the second joint portion, the second joint portion with the second joint portion separable connection that second linking arm bottom center set up.

12. The tissue clamping system of claim 11 wherein said first and second engaging portions are snap pins, said first and second snap portions are open-loop holes having open ends, said snap pins are connected to said open-loop holes and separable from said open-loop holes through said open ends of said open-loop holes under the force of said operating member.

13. The tissue clamping system of claim 10, wherein said operating member comprises an operating portion body and two independently disposed sliders, said operating portion body being mounted on a proximal end side of said pushing member, said operating portion body being provided with a window; the sliders are connected to the traction wire units of the pushing member, respectively embedded in the windows of the operation portion body, and are provided so as to be slidable in the axial direction with respect to the operation portion body.

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