CN115916073A

CN115916073A - Plug-in tissue clamping device and clamping piece thereof

Info

Publication number: CN115916073A
Application number: CN202280005418.4A
Authority: CN
Inventors: 黄俊俊; 单剑; 吴海良; 陈卿业; 孙忠利
Original assignee: Ningbo Xinwell Medical Technology Co Ltd
Current assignee: Ningbo Xinwell Medical Technology Co Ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2023-04-04
Also published as: WO2022257540A1

Abstract

An insertable tissue closure device and a clip (100) therefor. The clamp (100) comprises at least two clamp arms (110), each clamp arm (110) comprises a clamp head (1111) and a bendable portion (1112), and the bendable portion (1112) has a deformation structure capable of bending towards a closing direction of the clamp (100) and/or towards an opening direction of the clamp (100). In the structure, the sleeve is omitted, the moving rod (200) directly drives the clamping piece (100) and the bendable part (1112) is combined with the deformation state, so that the clamping piece (100) is opened and closed. The length of the clamp (100) is shorter than the combination of the clamp arm and the sleeve under the same open width requirement.

Description

Plug-in tissue clamping device and clamping piece thereof

Technical Field

The application relates to the field of medical equipment, in particular to a structure of an insertion type tissue clamping and closing device for operation.

Background

The inserted tissue clamping device is an inserted medical apparatus and instrument for clamping and closing the tissue in human body or animal body to stop bleeding or close, and comprises a hemostatic clamp, a tissue clamp and the like.

For example, in minimally invasive treatment of digestive tract diseases, the tissue clamping device is usually inserted into the instrument channel of an endoscope to achieve the treatment purpose. For example, hemostatic clips (or tissue clips) have been widely used to stop or close bleeding in areas of gastrointestinal bleeding or trauma.

In the prior art, a hemostatic clamp (or a tissue clamp) is mainly opened and clamped by matching a clamping arm with a sleeve, and particularly, a left clamping arm and a right clamping arm are loosely assembled together by a pin. The gripping arms can be received in the sleeve to effect closure. The gripping arms may also extend from the sleeve to effect the opening. The structure utilizes the axial space of the sleeve to realize the closing of the clamping arms, so that a part of the clamping arms are required to be contracted in the sleeve, the whole length remained in the body of a patient is longer after the hemostatic clamp is separated, and the injury and discomfort to the patient are more easily caused.

In another type of hemostatic clip (or tissue clip), the arms are connected primarily by a rotating shaft, and then a sliding up and down track is provided in the sleeve, along which the shaft slides. The upper end of the sleeve is also provided with a fixed shaft, the clamping arm is provided with a long strip hole, and the fixed shaft simultaneously penetrates through the long strip hole of the clamping arm. The sliding shaft is pushed and pulled to drive the two clamping arms to move up and down, and the clamping arms are forced to move along the path of the long-strip-shaped hole after being blocked by the fixing shaft, so that the opening and the closing are realized. The structure improves the control precision, the size of the clamp becomes smaller, but the number of parts is large, the structure becomes complex, and the cost is high.

Technical problem

The present application provides an insertable tissue clamping device and holder therefor to demonstrate a new opening and clamping configuration.

Technical solution

In accordance with the above objects, there is provided in one embodiment of the present application an insertable tissue clamping device comprising:

the clamping piece comprises at least two clamping arms, the clamping arms are of split structures and are mutually connected, and each clamping arm comprises a clamping head and a bendable part; the clamping head and the bendable part in the same clamping arm are of split structures and are connected with each other, or the clamping head and the bendable part are of an integrally formed structure; the clamping arm is used for clamping a target object; the bendable portion has a deformation structure capable of bending toward a closing direction of the clip and/or bending toward an opening direction of the clip;

a separation base connected with the clamp;

the moving rod is connected with the clamping piece so as to drive the clamping piece to open and close;

the transmission component comprises a sleeve component and a transmission component penetrating through the sleeve component, the transmission component is connected with the moving rod, and the separation base is rotatably connected to the sleeve component so that the clamping component can integrally rotate relative to the sleeve component;

the sleeve assembly is connected with the control handle, and the control handle and the transmission piece form a linkage structure so as to control the motion of the motion rod and the clamping piece;

the motion bar has a first stroke, a second stroke, and a third stroke; in the first stroke, the moving rod drives the clamping heads to move away from each other so as to open the clamping heads; in the second stroke, the moving rod drives the clamping heads to approach each other, and the clamping piece moves to a clamping state to clamp the target object; in the third stroke, the clamp member maintains the clamped state and is separated from the moving rod, and the separation base is separated from the clamp member.

the clamping piece comprises at least two clamping arms, each clamping arm comprises a clamping head and a bendable part, the clamping head and the bendable part in each clamping arm are of split structures and are connected with each other, the bendable parts of different clamping arms are of an integrally formed structure, and the clamping arms are used for clamping a target object; the bendable portion has a deformation structure capable of bending toward a closing direction of the clip and/or bending toward an opening direction of the clip;

a separation base connected with the clamp;

the moving rod is connected with the clamping pieces so as to drive the clamping pieces to open and close;

the motion bar has a first stroke, a second stroke, and a third stroke; in the first stroke, the moving rod drives the clamping heads to move away from each other so as to open the clamping heads; in the second stroke, the moving rod drives the clamping heads to approach each other, and the clamping piece moves to a clamping state to clamp the target object; in the third stroke, the clamping piece maintains the clamping state and is separated from the moving rod, and the separation base is separated from the clamping piece.

In view of the above, in one embodiment of the present application, there is provided a clamping member of an insertion type tissue clamping device, the clamping member includes at least two clamping arms, the clamping arms are connected to each other in a split structure, each clamping arm includes a clamping head and a bendable portion, the clamping head and the bendable portion in the same clamping arm are connected to each other in a split structure, or the clamping head and the bendable portion are integrally formed; the clamping arms are arranged in a clamping claw type structure to clamp a target object; the bendable portion has a deformable structure capable of bending toward a closing direction of the clip and/or bending toward an opening direction of the clip.

In view of the above, an embodiment of the present application provides a clamping member of an insertion type tissue clamping device, the clamping member includes at least two clamping arms, each of the clamping arms includes a clamping head and a bendable portion, the clamping head and the bendable portion in each of the clamping arms are separate structures and are connected to each other, the bendable portions of different clamping arms are integrally formed, and the clamping arms are arranged in a jaw-type structure to clamp an object; the bendable portion has a deformable structure capable of bending toward a closing direction of the clip and/or bending toward an opening direction of the clip.

As a further improvement of the above embodiment, the deformation structure comprises a plurality of first shrinkage joints, and the first shrinkage joints are arranged in sequence along the longitudinal direction of the clamping piece.

As a further modification of the above embodiment, the bendable portion has a plurality of second shrinkage joints extending along a circumferential direction thereof, the second shrinkage joints being arranged in the longitudinal direction therebetween; and two ends of each group of first shrinkage joints correspondingly extend into the space between two second shrinkage joints adjacent in the longitudinal direction respectively, and a twisting deformation section is formed in an overlapping area between the first shrinkage joints and the second shrinkage joints, so that the bendable part can be bent, twisted and deformed.

As a further refinement of the above embodiment the first shrink seam extends around the circumference of the bendable portion; the bendable part is provided with at least two groups of limiting structures, and the limiting structures are arranged on at least one side of the bendable part in the circumferential direction of the bendable part so as to limit the maximum bending angle of the bendable part to the opening direction of the clamping piece.

As a further improvement of the above embodiment, each of the limiting structures comprises a plurality of limiting units arranged along the longitudinal direction of the clamping member, each limiting unit comprises a first limiting block and a second limiting block which are arranged oppositely, a gap arranged along the longitudinal direction is formed between the first limiting block and the second limiting block, and the second contraction joint is communicated with the gap; and in the bending process of the bendable part towards the opening direction, the first limiting block and the second limiting block are close to each other and form a buckling structure.

In a further improvement of the above embodiment, in the limiting unit, the first limiting block and the second limiting block are formed by dividing a side wall of the bendable portion, which is located on the side of the first contraction joint, by the second contraction joint, and one ends of the first limiting block and the second limiting block, which are close to the first contraction joint, are connected into a whole, and the other ends are separated from each other.

As a further modification of the above embodiment, the initial state of the clamp is a clamped state; the second shrinkage joint has a gap in the longitudinal direction, and the second shrinkage joint of the limiting structure forms an adaptive floating structure capable of deforming towards the clamping direction, so that when the clamping piece clamps the target object, the bendable part can adaptively bend and deform towards the closing direction according to the volume of the target object.

Advantageous effects

According to the above embodiment, the clip member of the insertion type tissue clipping device comprises at least two clip arms, each of which comprises a clip head and a bendable portion having a deformation structure capable of bending toward the closing direction of the clip member and/or toward the opening direction of the clip member. In the structure, a sleeve in the existing structure is omitted, the moving rod directly drives the clamping piece, and the bending part is combined with the deformation state, so that the clamping piece is opened and closed. The length of the clamp is shorter than the clamp arm and sleeve combination of the prior art under the same open width requirement. In addition, in the clamping piece, part of parts are manufactured separately, and are assembled into a whole, so that the manufacturing difficulty and the cost can be reduced.

Drawings

FIG. 1 is a schematic view of an embodiment of an insertable tissue fastening device of the present application;

FIG. 2 is a schematic view of a clamp formed by two split clamp arms according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of the holder of FIG. 2 in an open position;

FIG. 4 is a schematic view of a clamp member comprising a clamp head and a bendable portion according to an embodiment of the present application;

FIG. 5 is a schematic view of an embodiment of the present application in which the bendable portion, the connecting portion, and the separating base are integrally formed;

FIG. 6 is a schematic view of an embodiment of the present application showing the insertion-type tissue fastening device in an open state (with the motion bar moving in a first stroke);

FIG. 7 is a view showing a structure of the holder in the state shown in FIG. 6, with a part broken away;

FIG. 8 is a schematic view of an embodiment of the present application showing the insertion tissue fastening device in a fastened state (with the motion bar moving in a second stroke);

fig. 9 is a schematic view of the structure of fig. 8 with a part of the structure partially broken away;

FIG. 10 is a schematic view of an embodiment of the present application with the insertion tissue fastening device in a fastened position and the fastening arms locked in a locked configuration (movement of the motion bar in a third stroke);

FIG. 11 is a view showing a part of the structure of FIG. 10 partially broken away;

FIG. 12 is a schematic view of an embodiment of the present application showing the configuration of the insertion tissue fastening device in a fastening state with the movable bar separated from the fastening elements (the movable bar moving in a third stroke);

fig. 13 is a schematic view of a part of the structure shown in fig. 12 with a part broken away;

FIG. 14 is a schematic view of an embodiment of the present application showing the configuration of the insertion tissue fastening device in a fastening state with the fastener and the detachment base detached (movement of the movable bar in the third stroke);

FIG. 15 is a view showing a part of the structure of FIG. 14 partially broken away;

FIG. 16 is a schematic view of an expanded shape of a clamp according to an embodiment of the present application;

FIG. 17 is an enlarged view of the bendable portion of the embodiment of FIG. 16 in a deformed configuration;

FIG. 18 is an enlarged view of a deformable structure of a bendable portion according to another embodiment of the present application;

FIG. 19 is an enlarged view of a deformable structure of a bendable portion according to another embodiment of the present application;

FIG. 20 is a schematic view of a bendable portion for gripping thin tissue in one embodiment of the present application;

FIG. 21 is a schematic view of a bendable portion for gripping thicker tissue in one embodiment of the present application;

FIG. 22 is a schematic view of a deformed configuration of a bendable portion of another embodiment of the present application;

FIG. 23 is a schematic view of a deformed configuration of a bendable portion in another embodiment of the present application;

fig. 24 is a schematic structural view of an embodiment of the present application in an expanded self-locking state.

Modes for carrying out the invention

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.

The present embodiments provide an insertable tissue occluding device (hereinafter referred to as an occluding device for ease of description) for occluding tissue within a human or animal body (collectively referred to as a target) to provide hemostasis or closure, which may include, but is not limited to, hemostatic clips, tissue clips, and the like.

Please refer to the drawings 1-13 The clamping device comprises a clamping piece 100 Sports rod 200 And a transmission assembly 300 Control handle 400 And a separating base 500 。

Unlike the prior art in which the clamping arm and the sleeve are combined to form the clamping structure, in this embodiment, the clamping member is a single piece 100 The clamping piece is an integral structure assembled by a plurality of parts 100 The bending deformation is realized through the self structural deformation without the aid of the auxiliary action of the sleeve. Please refer to the drawings 2-5 The clamping member 110 Comprising at least two holding arms 110 . Wherein, as shown in the figure 2 And 3 shown, each holding arm 110 Comprises a clamping head 1111 And a bendable part 1112 . The holding arm 110 The two parts are of split structures, namely, the two parts are separated, and then are connected with each other and assembled into an integral structure. Clamping arm 110 Are typically fixed, but in some embodiments, the clamp arms 110 There may be some movement space between them to meet different functional needs.

Please refer to the drawings 2 In one embodiment, the same clamping arm 110 Middle clamping head 1111 And a bendable portion 1112 Is of an integrated structure. The integral forming structure means that the whole part is integrally processed by the same material, and is not formed by assembling more than two parts. Integrally formed structures (including other integrally formed structures described below) may be formed using, but are not limited to, injection molding, laser cutting, and other machining processes. In particular, when laser cutting is adopted, processing of a very small gap can be realized, and miniaturization of the whole structure and improvement of the structural compactness are facilitated.

Of course, in some embodiments, reference may also be made to a clamp arm 110 In the same clamping arm 110 Middle clamping head 1111 And a bendable portion 1112 Are in split structure and then are mutually connected to assemble an integral clamping arm 110 。

Please refer to the drawings 4 In another embodiment, each gripper arm 110 Middle clamping head 1111 And a bendable part 1112 Is of a split structure, namely two separated parts which are connected with each other to be assembled into an integral clamping arm 110 . Wherein, as shown in the figure 4 Shown in different clamping arms 110 Can be bent 1112 Connected as a whole and is of an integrated structureThe integral forming and processing are convenient, and the assembling process can be omitted. Of course, in other embodiments, such as the figures 2 Shown, different gripper arms 110 Can be bent in between 1112 Or can be separated from each other and then assembled into a whole.

The separation base 500 The clamping member is required to be separated from the clamping member at a specific time so as to be capable of supporting the clamping member and to be retained in the body of the detection object. The separation base 500 Can be connected with the clamping piece 100 The connection can be an integrally formed structure or a fixed connection structure. In some embodiments, as shown in the figure 6-15 Shown, the separating base 500 Can be connected with the clamping piece 100 And (4) detachable connection. However, other embodiments, such as the figures 5 Shown, the separating base 500 Can also be connected with the bendable part 1112 Is of an integrally formed structure 5 In the middle, the bendable part 1112 Through the connecting part 120 (described in detail later) and a separation base 500 Are connected into a whole and a connecting part 120 And a separation base 500 Between the first tearing part and the second tearing part 540 And (4) connecting. Of course, the connecting part 120 Can also be omitted, directly from the bendable part 1112 And a separation base 500 Through the first tearing part 540 And (4) connecting.

The clamping piece 100 In the above embodiments, by detaching some parts into separate structures and separately manufacturing them, the single part can be reducedThe manufacturing difficulty of parts and the cost are reduced. The parts can be connected by welding, bonding, mechanical structure connection (including clamping, screwing, riveting and the like) and the like.

Further, the holding arm 110 The two clamping jaw type structures are arranged between the two clamping jaw type structures to clamp the target object. The jaw-type structure being a structure capable of firmly gripping an object, e.g. in the drawings 1-15 In the clamping arm 110 When two groups of the clamping arms are arranged, the two clamping arms 110 Are oppositely arranged when they are as shown in the figure 2 、 4 And 5 when the device is closed (in a clamping state), the object can be grabbed, as shown in the figure 20 And 21 as shown.

Please refer to the drawings 2-5 In one embodiment, the bendable portion 1112 Is of semi-cylindrical structure and is arranged on the clamping part 100 When closed, the bendable part 1112 Can be enclosed into a cylindrical structure. The semi-cylindrical shape is a non-complete cylindrical shape, and is not necessarily half of the cylindrical structure, and can be one third of the whole cylindrical structure or other sizes. Furthermore, in other embodiments, the bendable portion 1112 Other structures, such as sheets, etc., are also possible, and are not limited to the semi-cylindrical structure.

The clamping arms are arranged through the sleeve in the prior art 110 Limit to realize the clamping arm 110 In this embodiment, the clamp arm 110 Is mainly dependent on the flexible part 1112 Deformation of (2). Wherein the bendable part 1112 Having a flexible clamping member 100 Closing direction bend ofThe ingredients of the Chinese herbal medicine / Or to the holding member 100 The opening direction of the first and second members is curved. Please refer to the drawings 1 And 2 in the illustrated embodiment, the retaining member 100 Is in a clamped state, i.e. bendable portion 1112 Without deformation, the holding member 100 In a clamped state. At this time, the bendable part 1112 At least with clampable members 100 A deformed structure bent in the opening direction, thereby as shown in the figure 3 Shown, realizing a clamping member 100 Is opened.

Wherein the clamping head 1111 Has higher bending deformation resistance than the bendable part 1112 To ensure the holding arm 110 Providing a better bite effect to the target. The bendable part 1112 The bending deformation of (2) is achieved by its structure. The bendable part 1112 The bending deformation being reversible, i.e. bendable 1112 Has elasticity and can be restored by springing back when external force is lost, so that the bending deformation can be repeatedly carried out.

The motion rod 200 For controlling the gripping member 100 Open and clamped state. In the figure 6-15 In the motion rod 200 Is a pull rod. In other embodiments, the motion bar 200 Other configurations are possible. Sport rod 200 And a clamping member 100 Connecting and moving rod 200 Can control the clamping member 100 Moving towards the opening direction and towards the clamping directionAnd (5) moving. The transmission assembly 300 Plays a role of supporting and clamping 100 And a directional motion rod 200 Transmitting the motion and force effects.

Please refer to the drawings 1 、 6 And 7 the transmission assembly 300 Comprises a sleeve assembly 310 And a bushing assembly 310 Internal transmission member 320 Driving member 320 And a motion bar 200 And (4) connecting. The clamping piece 100 And a separating base 500 Can be detachably connected with each other to ensure that the clamping piece can be used for clamping when needed 100 Can be separated from the base 500 And (4) disengaging.

The separation base 500 Rotatable connection sleeve assembly 310 E.g. as shown in 6 And 7 shown, a separate base 500 Sleeve assembly 310 And (4) inside. Separating base 500 And a clamping member 100 Allowing the two to be in the sleeve assembly 310 To rotate in the circumferential direction of the holder so as to hold the holder 100 Can be integrally opposite to the sleeve pipe assembly 310 And (4) rotating. The sleeve assembly 310 And control handle 400 Connecting and controlling handle 400 And a transmission member 320 Form a linkage structure to control the transmission member 320 Sports rod 200 And a clamping member 100 The method can be performed. For example, the operator may control the handle 400 To control the clamping member 100 Relative sleeve assembly 310 Can rotate and can also pass through a control handle 400 To control the clamping member 100 Opening and closing of (3).

Sport pole 200 The movement of (2) may be a movement along its axial direction, a rotational movement, or the like. For example, please refer to the figure 6 And 7 in one embodiment, the motion bar is used as a motion bar 200 Axially directed away from the control handle 400 Near the clamping member 100 (rightward movement shown in the figure), the motion bar 200 Can drive the clamping part 100 Open outwardly to allow the clamping members to move 100 Move to the open state. Please refer to the drawings 8 And 9 in one embodiment, the motion bar 200 Close to the control handle along the axial direction thereof 400 Away from the holding member 100 (leftward movement shown) the motion bar 200 Can drive the clamping part 100 Inwardly toward each other to thereby bring the clamping members into abutment 100 And moving to a clamping state. Of course, in other embodiments, the motion bar 200 And the moving relation and the clamping member 100 Can be associated with the graph 6-9 Different from that shown, e.g. when moving a stick 200 Direction control handle 400 During movement, the clamping piece is driven 100 Open towards the clamping member 100 During movement, the clamping piece is driven 100 And (5) closing.

Wherein, the motion rod 200 Have a first stroke, a second stroke and a third stroke. The first stroke, the second stroke and the third stroke are motion rods 200 In the three parts of the whole movement stroke, the three strokes can be in the same direction, or at least two strokes can be in different directions, or the three strokes are all in different directions.

As an example, please refer to the figure 6 And 7 at this time, the motion bar 200 In a first stroke, in which the rod is moved 200 Axially facing away from the control handle 400 Near the clamping member 100 When moving (to the right in the figure), the motion rod 200 Can drive the clamping part 100 Open outwardly to allow the clamping members to move 100 Move to the open state.

Please refer to the drawings 8 And 9 at this time, the motion bar 200 In the second stroke, the motion rod 200 Close to the control handle along the axial direction thereof 400 Away from the holding member 100 When moving (leftwards in the figure), the moving rod 200 Can drive the clamping part 100 Inwardly toward each other to thereby cause the clamping members to move toward each other 100 And moving to a clamping state.

Please refer to the drawings 10-15 At this time, the motion bar 200 In a third stroke, the movementRod 200 Close to the control handle along the axial direction thereof 400 Away from the holding member 100 When moving (leftwards in the figure), the third stroke is in the same direction as the second stroke and is tightly connected, i.e. when the clamping piece moves 100 After moving to the clamping state, the moving rod 200 I.e. from the second stroke to the third stroke. Wherein, the third stroke can be divided into a plurality of sub-strokes, and the sub-strokes comprise a locking stroke, an inner disengaging stroke and an outer disengaging stroke.

Please refer to the drawings 10 And 11 when moving the rod 200 Switching to the third stroke until moving to the position shown in the figure, at which time the clamping piece 100 Is locked and moves the rod 200 Can not move reversely to reopen the clamping piece 100 . In the process, the motion rod 200 The movement stroke of (2) is a locking stroke.

Please refer to the drawings 12 And 13 sports pole 200 And after the locking stroke is finished, the inner separation stroke is entered. When moving the pole 200 When moving to the position shown in the figure, the clamping piece is at the time 100 Slave motion rod 200 Upper separation and movement rod 200 Can not drive the clamping piece any more 100 Move, lose, to the clamping member 100 Control of, holding members 100 Is held in a locked state. In the process, the motion rod 200 The movement stroke of (2) is an inner disengaging stroke.

Please refer to the drawings 14 And 15 sports pole 200 And after the inner separation stroke is completed, the outer separation stroke is entered. When moving the pole 200 When moved to the position shown in the figure, the clamping piece is at the time 100 And a separation base 500 Separating, to this point, the holder 100 Is left on the object it holds. Separating base 500 Sports rod 200 And a transmission assembly 300 Can be extracted from the body of the detected object. In the process, the motion rod 200 The movement stroke of (2) is an outer disengaging stroke.

In the structure shown in the above embodiments, the sleeve in the existing structure is omitted, and the motion rod is used for moving 200 Direct drive clamp 100 Combined with a bendable portion 1112 Thereby realizing the clamping member 100 Opening and closing. Because the sleeve is not used for clamping the arm 110 The holding arm 110 From the bendable part 1112 Beginning to deform, with the deformed region closer to the entire clamp 100 Thus, the one-piece clip is used under the same scutching requirement 100 Is longer than the clamping arm in the prior art 110 The combination with the sleeve is shorter. And under the same length, the integrated clamping piece 100 Can be compared with the clamping arm in the prior art 110 The combination with the sleeve opens out at a greater angle and more easily engages the tissue of the subject. When the clamping piece is clamped 100 And a separation base 500 After disengagement, the shorter clamp 100 Stay in the target object, reduce discomfort caused by overlong clip head of hemostatic clip (or tissue clip), and reduce discomfort caused by overlong clip headThe problem of excessive abrasion of the target object caused by the overlong clamping head left by the hemostatic clamp (or the tissue clamp) can be avoided as much as possible. In addition, the integral structure avoids the fit clearance of the parts necessary for the fit or sliding displacement of the shaft hole, so that the clamping arm 110 The bending repetition accuracy of (2) is higher.

Moreover, the whole clamp 100 The processing process is simple. Compared with the combined structure of a plurality of parts in the prior hemostatic clamp (or tissue clamp), the clamping piece which is integrally formed is adopted 100 After, whole clamping device part is still less, and the structure is simpler, and the assembly requirement is lower, and the cost obtains very big reduction, and it is higher to control the precision. Also, the entire clamp 100 Is also shorter than the length of existing hemostatic clips (or tissue clips). Such a shorter length of the holder is due to the very limited inner diameter of the endoscopic instrument channel 100 Easier passage in the endoscopic instrument channel.

Further, as described above, the bendable portion 1112 Is achieved by its one-piece construction. Please refer to the drawings 3 、 7 、 16-19 In some embodiments, the clip 100 Approach to a separation base 500 Is a proximal end, facing away from the separation base 500 Is a distal end, a self-holding member 100 Is a clamping piece from the proximal end to the distal end 100 In the longitudinal direction of (a). In order to realize the integrated deformation structure, the deformation structure comprises a plurality of first shrinkage joints 1113 First contraction joint 1113 Arranged in sequence along the longitudinal direction. The first shrinkage joint 1113 Can be achieved by a laser cutting process, for example, by a laser cutting process using a metal plate or tubeThe first shrinkage joint is processed 1113 。

In one embodiment, as shown in the figure 2 Shown, a clamping piece 100 Held in a clamped state in an initial state, first shrinkage joint 1113 Can be maintained in the initial state, and can be bent 1112 Each part is not deformed. As shown in the figure 3 Shown, when it is desired to open the clamp 100 At the time of bending 1112 Outward deformation, first shrinkage joint 1113 Contracted and deformed to thereby make the bendable part 1112 Outside (holding arm) 110 The sides that deviate from each other) to contract, so that the whole clamping head 1111 And (4) opening.

Please refer to the drawings 2 、 3 、 16-19 In one embodiment, the first shrink seam 1113 Around the flexible part 1112 Is provided. First shrinkage joint 1113 Are arranged in parallel. Of course, the first shrinkage joint 1113 Besides being parallel to each other, the two can also be arranged in other non-parallel arrangement modes. To form a first contraction joint 1113 Is arranged as a uniform edge bendable part 1112 Are arranged in parallel in the circumferential direction and can unify all the first shrinkage joints 1113 In the direction of bending deformation of the holding member 100 The bending deformation is smoother and more stable.

In order to achieve a smoother bending change, in one embodiment the first pinch seam 1113 Divided into several groups, each group of first shrinkage joints 1113a Having at least one first shrinkage joint 1113 . As shown in the figure 2 、 3 And a drawing 16-17 In the embodiment shown, each set of first shrink seams 1113a With two first shrinkage joints 1113 . As shown in the figure 18 And 19 in the embodiment shown, each set of first shrink seams 1113a Having a first shrinkage joint 1113 . Each first shrinkage joint 1113 Can be bent by contraction of the elastic part 1112 With a certain bending angle, in a plurality of groups of first shrinkage joints 1113 In combination, the bendable part can be bent 1112 Has a larger opening and closing angle. All first shrinkage joints in longitudinal direction 1113 The length of the combination determines the whole bendable part 1112 The first shrinkage joint group can be flexibly arranged according to actual requirements 1113a Number of adjacent first shrink seam groups 1113a Longitudinal gap and first set of shrinkage joints 1113a Inner first contraction joint 1113 The number of the same, etc. For example, the first set of shrink seams 1113a (may be) 4-6 And (4) grouping.

Please refer to the drawings 19 In one embodiment, the first shrink seam 1113 Is in the shape of a long-strip groove, and the first contraction joint 1113 Has two oppositely convex arc edges in the middle part 1113b . When the clamping piece is clamped 100 When the cover is opened to a limited position, the arc-shaped edge 1113b Will come into contact with each other to determineThe maximum angle of opening. When the clamping piece is clamped 100 When in a clamping state, the arc-shaped edge 1113b Will contact each other to clamp the pieces 100 Providing a supporting force.

In view of the need for minimally invasive surgery, the clipping device is usually of a very delicate and compact structure, so that the clipping element can be used in a small size 100 It is generally not desirable to use thicker materials. However, the thinner thickness requirement may result in a bendable portion 1112 Weakening of strength, in particular, as a drawing 3 It is shown that when the external force applied by the operator is too great, the clamping arm is caused to clamp 110 Bending outward over a large angle may result in the clamp arm 110 From the bendable part 1112 And is broken. Based on this, in one embodiment, as shown in the figure 3 Shown, a bendable part 1112 Has a limit structure 1114 Limiting structure 1114 For restricting the bendable part 1112 The maximum angle of bending to the opening direction. I.e. the bendable part within a maximum angle 1112 Can be freely bent. When the bending angle reaches the maximum angle, the limiting structure 1114 Starts to act to limit the bendable part 1112 Continuously bent outwards to protect the bendable part 1112 And a clamping member 100 The function of (1). The limiting structure 1114 Mainly by means of a clamping member 100 The maximum angle is limited by the upper longitudinal limit of (2).

Please refer to the drawings 3 And figures 16-19 A in an embodiment of the present invention,each limit structure 1114 Comprises a plurality of edge clamping pieces 100 Longitudinally arranged limit unit 1114a . Limit unit 1114a Comprises a first limit block arranged oppositely 1115 And a second stopper 1116 . As shown in the figure 17 In a 、 b Two partial enlarged views are shown, the first limiting block 1115 And a second limiting block 1116 With a gap arranged along the longitudinal direction 1117 At the bendable part 1112 In the process of bending towards the opening direction, the first limit block 1115 And a second limiting block 1116 Close to each other and form a snap-fit structure (see figure) 17 In b A partial enlarged view shown). That is, in the initial state, the first stopper 1115 And a second limiting block 1116 Is shown in the figure 17 In a Shown with a gap 1117 When holding the parts 100 When the first limiting block gradually opens outwards 1115 And a second limiting block 1116 Relative movement in the longitudinal direction, the gap 1117 Gradually become smaller and finally become a bendable part 1112 When the maximum angle is reached, the figure shows 17 In (1) b A first limiting block 1115 And a second limiting block 1116 And the two parts are mutually attached to form limiting.

As shown in the figure 16-19 AIn an embodiment, the first limiting block 1115 And a second limiting block 1116 Is two mutually buckled limiting hook structures. The limit hook structure can be replaced by other structures with similar functions. As shown in the figure 3 In one embodiment, the first shrink seam 1113 Located at the bendable part 1112 Circumferential middle part and limiting structure 1114 At least two groups of the flexible parts 1112 In the circumferential direction of (2), a bendable portion 1112 Are respectively provided with a limit structure 1114 Can further ensure the whole bendable part 1112 Can synchronously change bending and limit position.

Please refer to the drawings 3 And figures 16-19 In one embodiment, the same limiting unit 1114a In the first limit block 1115 And a second stopper 1116 By a bendable part 1112 Is located at the first shrinkage joint 1113 The side wall is divided into a first limit block 1115 And a second stopper 1116 Near the first shrinkage joint 1113 One end of the two ends are connected into a whole, and the other ends are separated from each other. When the clamping piece is clamped 100 When the first limiting block is opened outwards 1115 And a second stopper 1116 Can also follow the clamping piece 100 And (4) opening.

As shown in the figure 3 And figures 16-19 Shown, first shrinkage joints of each set 1113a Can be connected with a limiting unit 1114a Are aligned in the circumferential direction, thereby ensuring a limit unit 1114a The limiting function can accurately act on the corresponding first shrinkage joint 1113 To prevent the first shrinkage joint after bending to a maximum angle 1113 Continue to shrink and deform to form a bendable part 1112 Is broken.

The limiting unit 1114a May be more than the first set of shrinkage joints 1113a So as to completely cover all the first shrinkage joints in the longitudinal direction 1113 So as to play a better limiting role. Of course, the limiting unit 1114a The number of the first shrink seam groups can be less than or equal to that of the first shrink seam groups 1113a The number of the cells.

Further, please refer to the figure 16-19 In one embodiment, the first limiting block 1115 And a second stopper 1116 At least partial region along the bendable part 1112 Circumferentially arranged second shrinkage joint 1118 . The second shrinkage joint 1118 Can be used for fixing the first limit block 1115 And a second stopper 1116 Spaced apart to allow relative movement between the two. The second shrinkage joint 1118 With the first stopper 1115 And a second stopper 1116 The gap therebetween 1117 And (4) communicating.

In view of the clamping member 100 The bending movement in the opening direction and the bending movement in the clamping direction are often accompanied by a twisting movement around the circumference thereof, and therefore, please refer to the drawings 16-19 In one embodiment, each group is the second groupA contraction joint 1113a The two ends of the first and second limiting units respectively extend into the two limiting units adjacent in the longitudinal direction 1114a Second shrinkage joint of 1118 First contraction joint 1113 And second contraction joint 1118 The overlapping area between them forms a distortion section 1119 So as to make the bendable part 1112 Can be bent and twisted. Is provided with the distortion section 1119 At the same time, the clamping piece 100 The bending deformation of the steel is smoother, and the bendable part is avoided 1112 And is broken by being subjected to a torsional force. By adjusting the distortion section 1119 The circumferential length and the longitudinal height of the flexible portion can be further changed 1112 The maximum opening angle, the bending softness or the supporting performance can be flexibly set according to the actual requirement. For example, the distortion section 1119 Through the structure of the device, the device can also play a role in limiting the maximum opening angle, and the limiting effect can be matched with the limiting structure 1114 Combine to jointly form a bendable portion 1112 The maximum opening and closing angle of the door.

In the figure 17 And 19 in the illustrated embodiment, the second shrink seam 1118 Is arranged in a linear type. In the figure 18 In the illustrated embodiment, the second shrinkage joint 1118 Is like U And (4) shape setting.

Further, as described above, when the clamp is engaged 100 Holding an object 1 Rear, moving rod 200 Need to be connected with a clamping piece 100 Move together toAnd locking by a preset locking structure. However, in actual use, when the clamping member is used 100 The hardness or thickness of the clamping human tissues are different (as shown in the figure) 20 And 21 shown), will limit the grip 100 The closing angle of (c). Because of the closing angle and the motion bar 200 Stroke association, in which case the clamping elements are caused 100 And a motion bar 200 Can not move to the position of the locking structure, the clamping piece 100 Cannot be held in the clamped state.

To address this problem, please refer to the figure 20 And 21 the second contraction joint 1118 With a gap in the longitudinal direction. Limit structure 1114 Second shrinkage joint of (2) 1118 Forming a self-adaptive floating structure capable of deforming towards the clamping direction so as to clamp the piece 100 Clamping an object 1 At the time of bending 1112 Can be based on the object 1 Is self-adaptive to bending deformation in the closing direction and moves to the rod 200 And a clamping member 100 Providing an adaptive range of travel, increasing the range of motion of the motion bar 200 The rigid body deformation margin of the motion rod is always ensured 200 And a clamping member 100 The locking mechanism can move to the locking position of the locking structure, and accurate and reliable locking is achieved.

Specifically, please refer to the drawings 20 When holding a member 100 Holding thin objects 1 In time, the clamping piece 100 Normally closed, second contraction joint 1118 Maintain normal clearance (as shown in the figure) 20 In a Partial enlarged view shown) motion bar 200 And a clamping member 100 Can move to the position of the locking structure accurately as shown by the locking stroke to clamp the clamping piece 100 And locking in the clamping state. Please refer to the drawings 21 When holding the parts 100 Clamping thicker objects 1 At the same time, the clamping piece 100 Can not be closed to 20 To the extent shown, at which the motion bar continues to be pulled 200 The second contraction joint 1118 Can be towards the clamping part 100 In the closing direction (see the figure) 21 In (1) a A partial enlarged view shown). For example, in one embodiment, each second shrink seam 1118 Can be provided in the longitudinal direction 0.02-0.05MM At the indicated number of second shrinkage joints 1118 Lower, multiple second shrinkage joints 1118 Can provide near after accumulation 0.1-0.2mm So that the bendable portion is bent 1112 As shown in the figure 21 Shown bent inwardly (figure) 21 Middle bendable part 1112 Both sides are slightly outwardly convex deformed) to compensate for the clamp 100 Upper lost stroke of the clamping member 100 And can finally be locked to the locking structure.

The above embodiment shows a bendable portion 1112 The structure of bending deformation is realized by forming shrinkage joints, and the bendable part of the embodiment 1112 The deformation structure of (2) is not limited thereto, and it may be also realized by other means. For example, please refer to the figure 22 In one embodiment, at the clamping member 100 In the middle, the bendable part 1112 Can be made of a material more flexible than the material of the clamping head 1111 And a connecting part 120 (described in detail later) more flexible materials, such as metal or plastic materials with better bending property, so as to make the motion rod 200 Drive the clamping member 100 During exercise, the bendable part 1112 Can be preferentially bent and deformed. Of course, the bendable part 1112 Other structures with better bending deformation properties, such as metal woven structures, etc., may also be used.

Please refer to the drawings 23 In one embodiment, at the clamping member 100 In the middle, the bendable part can also be used 1112 Is arranged to be thinner than the other parts, e.g. than the gripping head 1111 And a connecting part 120 Is thinner, thereby enabling the motion bar 200 Drive the clamping member 100 During exercise, the bendable part 1112 Can be preferentially bent and deformed.

Further, in order to make the clamping piece 100 To reduce interference between them when closed, in one embodiment, the clamping members 100 Opposite end therebetween is provided with an avoiding structure 1110 So as to be in the clamping part 100 And when closed, the two parts are mutually avoided. Please refer to the drawings 18 In this embodiment, the holding member 100 Is retracted inwardly at the opposite endForming an avoiding structure 1110 Two opposed clamping members 100 An avoidance slot is formed through the retraction area. The width of the avoiding groove is along the clamping piece 100 Is gradually enlarged in the longitudinal direction, wherein the avoiding groove is close to the clamping head 1111 Is wider at one end than at the other. Of course, the avoidance structure 1110 Other structures capable of performing the avoidance function are also possible, and are not limited to the structures shown in the drawings.

Further, in the motion rod 200 Can pass through various structures and clamping pieces 100 Connect as long as can drive the holder 100 And moving towards the opening direction and the clamping direction. The motion rod 200 Can be connected with the clamping piece 100 Direct connection, or connecting structure through clamping piece 600 And a clamping member 100 And (4) connecting.

Please refer to the drawings 7 And 24 in one embodiment, the connecting structure of the clamping piece 600 Comprises two connecting rods 610 The two connecting rods 610 Are connected together at one end to the motion bar 200 While being pivotable about an axis 620 Rotate, and the other end is respectively connected with the clamping head 1111 The upper transverse axis is connected to, and can rotate around, the transverse axis. Connecting rod 610 The components are similar Y Font, the purpose is to move the rod 200 The push force and the pull force of the up-and-down motion are effectively transmitted to the clamping head 1111 Upper, realize the clamping head 1111 The opening and closing of the valve are controlled.

Please refer to the drawings 24 In the sport pole 200 When moving in the first stroke, the rod moves along with the movement 200 Control handle for deviating from 400 Movement of one end, clamping member 100 Can be opened towards the opening direction. Wherein the connecting rod 610 And a motion bar 200 Center of rotation of A Can pass over the connecting rod 610 And a clamping head 1111 Between two rotation centers B Thereby forming a self-locking to the clamping member 100 Can not be easily closed by external force when kept in an open state, and can only be closed by a control handle 400 Control clamping head 1111 And (4) withdrawing.

Of course, the holder connecting structure 600 Other arrangements for attachment are possible, such as the various clamp arms disclosed in the prior art 110 And the connection mode with the pull rod.

Further, please refer to the figure 3 、 4 And 5 in one embodiment, the holder 100 Comprises a connecting part 120 . Connecting part 120 And a bendable part 1112 And a clamping head 1111 Are connected into a whole in sequence. Separating base 500 Is detachably connected with the connecting part 120 The above.

Please refer to the drawings 3-15 The connecting part 120 Lock with the aboveStop structure 121 Locking structure 121 For clamping the clamping member 100 And locking in the clamping state. Of course, in other embodiments, the clamp member 100 May or may not include a connecting portion 120 The locking structure 121 Can be directly arranged on the bendable part 1112 Or other structure.

In one embodiment, the motion rod 200 Or clamping member connecting structure 600 Having a locking engagement 631 In the sport pole 200 When moving along the third stroke, the locking structure 121 At the locking engagement part 631 On the moving path of (2); when locking the mating part 631 Move to the locking structure 121 When in use, the two form locking fit to clamp the clamping piece 100 Held in a clamped state.

Please refer to the drawings 6-15 In one embodiment, the clamping member 100 Forming a cylindrical structure. Sport rod 200 One end of the clamping piece extends into the cylindrical structure and is connected with the clamping piece 100 And (4) connecting. Locking engagement portion 631 Comprising an orientation grip 100 The resilient body being arranged in a projection, e.g. the resilient body being a leaf spring extending in the direction of projection towards the holder 100 Is inclined at the distal end side. Locking structure 121 Including a slot capable of mating with an elastomer. The elastic body is positioned on the clamping piece 100 And the elastic body can be clamped with the clamping groove under the action of elasticity.

Specifically, please refer to the drawings 15 In one embodiment, the locking engagement portion 631 Is provided with a cylindrical body 630 Upper, the cylindrical body 630 For the connecting structure of the clamping piece 600 Can pass through the shaft 620 And a connecting rod 610 Forming a linkage structure. The motion rod 200 From the cylindrical body 630 Passing through and in connection with the shaft 620 And (4) connecting. The cylindrical body 630 Rod capable of following movement 200 Direction control handle 400 One side moves until it is locked by the locking structure.

In other embodiments, other possible locking features may be used, such as the clamping arms disclosed in the prior art 110 Or the locking mode of the pull rod and the sleeve.

For more stable locking of the clamping member 100 Please refer to the drawings 15 In one embodiment, the locking structure 121 And a lock engagement portion 631 Two or more (two in the figure). For uniform force, in one embodiment, the locking structure 121 Winding clamping piece 100 Are evenly distributed circumferentially (i.e. adjacent locking structures) 121 At the same angle therebetween), a detent engagement portion 631 And a clamping member 100 In opposite positions, e.g. also around the motion bar 200 Are uniformly distributed in the circumferential direction.

Further, please refer to the drawings 7 、 13 And 15 in one embodiment, to install the split base 500 The connecting part 120 Is provided with a clamping part 122 Separating base 500 With supporting feet 510 . Supporting leg 510 And a clamping part 122 And (4) clamping connection. Sport rod 200 With a push-top part 283 In the sport pole 200 While moving along the third stroke, separating the base 500 Arranged at the top of the push rod 283 On the moving path of (2), push the top 283 Can push the separation base 500 Direction control handle 400 One side moves to separate the connection part 120 And a separation base 500 . Please refer to the drawings 13 And 15 e.g. separating bases 500 With a push-top part 283 Convex part on moving path 530 The convex part 530 Separating base capable of being cylindrical 500 The bottom is provided with a movable rod 200 A through hole is penetrated. Separating base 500 To be connected with a connecting part 120 Clamping connection, its supporting leg 510 Can be provided with a bent buckle, and the clamping part 122 The buckle can be a clamping groove matched with the buckle, and the buckle extends into the clamping groove to be buckled and connected. The connection is at the pushing top part 283 Under the pushing of, this buckle can take place deformation to from joint portion 122 And (4) upward separation.

Further, please refer to the drawings 7-15 In one embodiment, the motion bar 200 The internal separation is realized through a split combined structure. In particular, the motion bar 200 With clamping grooves 281 The clamping groove 281 Having openings smaller than their slot cavities 282 The motion rod 200 Through the clamping groove 281 Connecting structure with clamping piece 600 A latch, in particular connectable to a connecting rod 610 Mounting shaft of 620 The above. At the sport pole 200 Is limited by the opening when moving along the first stroke and the second stroke 282 The holding member connecting structure 600 And a clamping member 100 Rod capable of moving along with movement 200 Move together to realize a clamping member 100 Opening and clamping. As shown in the figure 25 Shown as a motion bar 200 After the inner separation stroke, the clamping piece 100 And a clamping member connecting structure 600 Is blocked and cannot continue to the control handle 400 One side moves, and the clamping piece connecting structure is acted by external force 600 Slave clamping groove 281 Opening of (2) 282 Middle separation and movement rod 200 From here with holder connection structure 600 And (4) separating to realize internal separation.

The above is merely exemplary of an internal disengagement structure, and in other embodiments, the motion bar 200 Can also be oneAnd (4) forming the body. For example, in one embodiment, the motion bar 200 The first tearing part is connected with the second tearing part, and the second tearing part is connected with the first tearing part. The retaining section is connected with the clamping body, and the locking matching part is positioned on the retaining section. At the sport pole 200 When moving along the third stroke, the second tearing part is broken, and the retaining section and the separating section are separated. In addition, the motion bar 200 And a clamping member 100 Other internal disengagement arrangements may also be used to effect disengagement, e.g. Adopts a pull rod and a clamping arm in the prior art 110 The inner release structure of (a).

Further, please refer to the drawings 1 And 7 in the transmission assembly 300 In one aspect, the sleeve assembly 310 May typically include a spring support sleeve 311 Driving member 320 (e.g. traction control line) mounted on the spring support sleeve 311 In (1). The motion rod 200 Pottery capable of being connected through reducing 321 Or other structures and driving members 320 And (4) fixedly connecting. Spring support sleeve 311 The jacket is fixedly provided with a connecting pipe 312 Pipe for connecting 312 Is provided with a fixed seat 313 . The connecting pipe 312 And a separation base 500 And a clamping member 100 Rotationally connected to make the whole clamping member 100 Base capable of being separated at any time 500 Together relative transmission assembly 300 And (4) rotating.

The invention has been explained above using specific examples, but only for assisting a personThe present invention is not to be considered as limited. For those skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention。

Claims

An insertable tissue clamping device comprising:

the clamping piece comprises at least two clamping arms, the clamping arms are of split structures and are mutually connected, and each clamping arm comprises a clamping head and a bendable part; the clamping head and the bendable part in the same clamping arm are of split structures and are connected with each other, or the clamping head and the bendable part are of an integrally formed structure; the clamping arm is used for clamping a target object; the bendable portion has a deformation structure capable of bending toward a closing direction of the clip and/or bending toward an opening direction of the clip;

the separation base is connected with the clamping piece;

the moving rod is connected with the clamping pieces so as to drive the clamping pieces to open and close;

the transmission component comprises a sleeve component and a transmission component penetrating through the sleeve component, the transmission component is connected with the moving rod, and the separation base is rotatably connected to the sleeve component so that the clamping component can integrally rotate relative to the sleeve component;

the sleeve assembly is connected with the control handle, and the control handle and the transmission piece form a linkage structure so as to control the motion of the motion rod and the clamping piece;

the motion bar has a first stroke, a second stroke, and a third stroke; in the first stroke, the moving rod drives the clamping heads to move away from each other so as to open the clamping heads; in the second stroke, the moving rod drives the clamping heads to approach each other, and the clamping piece moves to a clamping state to clamp the target object; in the third stroke, the clamping piece maintains the clamping state and is separated from the moving rod, and the separation base is separated from the clamping piece.
An insertable tissue clamping device, comprising:

the clamping piece comprises at least two clamping arms, each clamping arm comprises a clamping head and a bendable part, the clamping head and the bendable part in each clamping arm are of split structures and are connected with each other, the bendable parts of different clamping arms are of an integrally formed structure, and the clamping arms are used for clamping a target object; the bendable part has a deformation structure capable of bending toward a closing direction of the clamp and/or bending toward an opening direction of the clamp;

the separation base is connected with the clamping piece;

the moving rod is connected with the clamping pieces so as to drive the clamping pieces to open and close;

the transmission component comprises a sleeve component and a transmission component penetrating through the sleeve component, the transmission component is connected with the moving rod, and the separation base is rotatably connected to the sleeve component so that the clamping component can integrally rotate relative to the sleeve component;

the sleeve assembly is connected with the control handle, and the control handle and the transmission piece form a linkage structure so as to control the motion of the motion rod and the clamping piece;

the motion bar has a first stroke, a second stroke, and a third stroke; in the first stroke, the moving rod drives the clamping heads to move away from each other so as to open the clamping heads; in the second stroke, the moving rod drives the clamping heads to approach each other, and the clamping piece moves to a clamping state to clamp the target object; in the third stroke, the clamp member maintains the clamped state and is separated from the moving rod, and the separation base is separated from the clamp member.
The insertable tissue closure device of claims 1 or 2, wherein the deformation structure comprises a plurality of first shrink seams arranged in series longitudinally along the holder.
The insertable tissue closure device of claim 3, wherein the first pinch seams are divided into groups, each group having at least one first pinch seam; the bendable part is provided with a plurality of second shrinkage joints which extend along the circumferential direction of the bendable part, and the second shrinkage joints are arranged along the longitudinal direction; and two ends of each group of first shrinkage joints correspondingly extend into the space between two second shrinkage joints adjacent in the longitudinal direction respectively, and a twisting deformation section is formed in an overlapping area between the first shrinkage joints and the second shrinkage joints, so that the bendable part can be bent, twisted and deformed.
The insertable tissue closure device of claim 4, wherein the first shrink seam extends around a circumference of the bendable portion.
The insertable tissue closure device of claims 4 or 5, wherein the bendable portion has a stop structure provided on at least one side of the bendable portion in a circumferential direction of the bendable portion for limiting a maximum angle of bending of the bendable portion to the opening direction.
The device as claimed in claim 6, wherein each of the limiting structures comprises a plurality of limiting units arranged along the longitudinal direction of the clamping member, the limiting units comprise a first limiting block and a second limiting block which are oppositely arranged, a gap is formed between the first limiting block and the second limiting block along the longitudinal direction, and the first limiting block and the second limiting block approach each other and form a buckling structure when the bendable portion bends towards the opening direction.
The insertable tissue closure device of claim 7, wherein the first and second retention blocks are formed by a sidewall of the flexible portion that is laterally spaced from the first contraction joint, and wherein the first and second retention blocks are integrally connected at ends thereof that are adjacent to the first contraction joint and are separated from each other at other ends thereof.
The insertable tissue closure device of claim 8, wherein the initial state of the gripping member is a gripping state; the second shrinkage joint has a gap in the longitudinal direction, and the second shrinkage joint of the limiting structure forms an adaptive floating structure capable of deforming towards the clamping direction, so that when the clamping piece clamps the target object, the bendable part can adaptively bend and deform towards the closing direction according to the volume of the target object.
The insertable tissue closure device of any one of claims 1-9, wherein opposing ends between the jaws are provided with relief structures to relieve each other when the jaws are closed.
The insertable tissue closure device of any one of claims 1-10, wherein the clip member comprises a connecting portion integrally formed with or interconnected to the flexible portion; the clamping piece is detachably connected with the separation base through the connecting part, or the connecting part and the separation base are of an integrally formed structure; the connecting part is provided with a locking structure, the moving rod, the clamping piece or the clamping piece connecting structure is provided with a locking matching part, and when the moving rod moves along the third stroke, the locking structure is positioned on a moving path of the locking matching part; when the locking matching part moves to the locking structure, the locking matching part and the locking structure form locking matching to keep the clamping piece in a clamping state.
The insertable tissue closure device of claim 11, wherein the holder is formed as a cylindrical structure, and wherein one end of the motion bar extends into the cylindrical structure and is connected to the holder; the locking cooperation portion includes the orientation the protruding elastomer that sets up of holder, the elastomer along its protruding direction to the distal end one side slope of holder, the locking structure including can with elastomer complex draw-in groove, the elastomer is located in the holder to be in the extrusion deformation state, the elastomer can under the spring action with the draw-in groove joint.
The clamping piece of the plug-in tissue clamping device is characterized by comprising at least two clamping arms, wherein the clamping arms are in a split structure and are connected with each other; the clamping arms are arranged in a clamping claw type structure to clamp the target object; the bendable portion has a deformable structure capable of bending toward a closing direction of the clip and/or bending toward an opening direction of the clip.
The clamping piece of the inserted tissue clamping device is characterized by comprising at least two clamping arms, wherein each clamping arm comprises a clamping head and a bendable part, the clamping head and the bendable part in each clamping arm are of split structures and are connected with each other, the bendable parts of different clamping arms are of an integrally formed structure, and the clamping arms are arranged in a clamping jaw type structure to clamp a target object; the bendable portion has a deformable structure capable of bending toward a closing direction of the clip and/or bending toward an opening direction of the clip.
The clip of claim 13 or 14, in which the deformation means comprises a plurality of first shrink seams arranged one after the other in the longitudinal direction of the clip.
The clip of claim 15, wherein the flexible portion has a plurality of second pinch seams extending circumferentially thereof, the second pinch seams being arranged in the longitudinal direction; two ends of each group of first shrinkage joints respectively and correspondingly extend into the space between two longitudinally adjacent second shrinkage joints, and a twisting deformation section is formed in an overlapping area between the first shrinkage joints and the second shrinkage joints, so that the bendable part can be bent and twisted to deform.
The clip of claim 16 wherein the first shrink seam extends around a circumference of the flexible portion; the bendable part is provided with at least two groups of limiting structures, and the limiting structures are arranged on at least one side of the bendable part in the circumferential direction of the bendable part so as to limit the maximum bending angle of the bendable part to the opening direction of the clamping piece.
The clamping member of claim 17, wherein each of the limiting structures comprises a plurality of limiting units arranged along the longitudinal direction of the clamping member, each limiting unit comprises a first limiting block and a second limiting block which are oppositely arranged, a gap is formed between the first limiting block and the second limiting block, the gap is formed between the first limiting block and the second limiting block, and the second contraction joint is communicated with the gap; and in the bending process of the bendable part towards the opening direction, the first limiting block and the second limiting block are close to each other and form a buckling structure.
The clamping member as claimed in claim 18, wherein in the same limiting unit, the first limiting block and the second limiting block are formed by dividing the side wall of the bendable portion, which is located at the side of the first contraction joint, by the second contraction joint, one ends of the first limiting block and the second limiting block, which are close to the first contraction joint, are connected into a whole, and the other ends are separated from each other.
The clip defined in claim 19 wherein the initial state of the clip is a clipped state; the second shrinkage joint has a gap in the longitudinal direction, and the second shrinkage joint of the limiting structure forms an adaptive floating structure capable of deforming towards the clamping direction, so that when the clamping piece clamps the target object, the bendable part can adaptively bend and deform towards the closing direction according to the volume of the target object.