CN115867210A

CN115867210A - Plug-in tissue clamping device and clamping piece thereof

Info

Publication number: CN115867210A
Application number: CN202280005412.7A
Authority: CN
Inventors: 单剑; 黄俊俊; 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: 2023-03-28
Also published as: WO2022257538A1

Abstract

An insertable tissue closure device and a clip (100) therefor, the insertable tissue closure device including an integrally formed clip (100). The clamping member (100) comprises a clamping body (110) and a release body (120). The clamp arm (111) of the clamp body (110) comprises a clamp head (1111) and a bendable part (1112), and the bendable part (1112) has a deformable structure capable of bending in a closing direction of the clamp body (110) and/or bending in an opening direction of the clamp body (110). The motion rod (200) directly drives the clamping body (110) and realizes the opening and closing of the clamping body (110) by combining the deformation state of the bendable part (1112). The length of the one-piece clamping body (110) is shorter than the prior art clamping arm and sleeve combination. The holder (110) and the release body (120) are connected to each other by a first tear portion (130) and can be integrally formed.

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 inserted 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 includes hemostatic clamp, tissue clamp, etc.

For example, in the minimally invasive treatment of digestive tract diseases, the tissue clamping device is usually inserted into the instrument channel of the 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.

One type of hemostatic clip (or tissue clip) is known in the art that is primarily opened and held by engagement of the clamping arms with the sleeve, and specifically, the left and right clamping arms are loosely assembled together by a pin, and when the clamping arm assembly is pulled in a proximal direction, the clamping arms are gradually retracted into the sleeve and engage the front edge of the sleeve. And limited by the outer diameter of the sleeve, the sleeve applies reverse extrusion force to the clamping arms, and the clamping arms elastically deform inwards to close. When the gripper arm assembly is moved distally, the gripper arms are pushed out of the sleeve and automatically re-open due to their elastic restoring force, so that the gripper device can be opened and closed repeatedly. 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 must be contracted in the sleeve, the whole length of the hemostatic clamp remained in a patient body is longer after the separation of the hemostatic clamp, 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. The overall length of the clamp is still larger on the premise of the same scutching. Therefore, the overall size of the clamp is longer, the passage of an endoscope instrument channel is not facilitated, and the foreign body sensation of the whole clamp when a human body stays is obvious.

Technical problem

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

Technical solution

In accordance with one embodiment of the present application, there is provided an insertion type tissue clamping device, comprising:

the clamping piece is of an integrally formed structure and comprises a clamping body and a release body, the clamping body comprises at least two clamping arms, the clamping arms are connected with each other, and each group of clamping arms comprises a clamping head and a bendable part; the bendable part has a deformation structure capable of bending towards the closing direction of the clamping body and/or bending towards the opening direction of the clamping body, and the clamping body is connected with the releasing body through a structure capable of being separated under the action of external force applied by an operator;

the moving rod is connected with the clamping body to drive the clamping body to open and close;

the transmission component comprises a sleeve component and a transmission part penetrating through the sleeve component, the transmission part is connected with the moving rod, and the release body 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 body moves to a clamping state to clamp the target object; in the third stroke, the clamping body maintains the clamping state and is separated from the moving rod, and the separation body is disconnected from the clamping body.

In one embodiment, the deformation structure comprises a plurality of first shrinkage joints, and the first shrinkage joints are sequentially arranged along the longitudinal direction of the clamping body.

In one embodiment, the first shrink seams are divided into groups, each group of the first shrink seams having at least one first shrink 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.

In one embodiment, each limiting structure comprises a plurality of limiting units arranged along the longitudinal direction of the clamping body, 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 one embodiment, the initial state of the clamping body is a clamping state; the second shrinkage joint has a gap in the longitudinal direction, and the second shrinkage joint constitutes an adaptive floating structure that is deformable in the clamping direction, so that the bendable portion is adaptively bent and deformed in the closing direction according to the volume of the object when the clamping body clamps the object.

In view of the above, an embodiment of the present application provides a clamping member of an insertion type tissue clamping device, including a clamping body and a releasing body, where the clamping body and the releasing body are integrally formed, the clamping body includes at least two clamping arms connected to each other, and each clamping arm includes a clamping head and a bendable portion; the bendable portion has a deformable structure capable of bending in a closing direction of the grip arm and/or in an opening direction of the grip arm, and the grip body and the release body are connected by a structure capable of being separated by an external force applied by an operator.

In one embodiment, the bendable portion has a plurality of second shrinkage joints extending along a circumferential direction of the bendable portion, 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.

In one embodiment, the initial state of the clamping body is a clamping 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 body 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

An insertable tissue closure device according to the above embodiments includes an integrally formed clip member. The clamping piece comprises a clamping body and a releasing body. In the clamping body, the clamping arm comprises a clamping head and a bendable part, and the bendable part is provided with a deformation structure capable of bending towards the closing direction of the clamping body and/or bending towards the opening direction of the clamping body. In the structure, a sleeve in the existing structure is omitted, the motion rod directly drives the clamping body, and the deformation state of the bendable part is combined, so that the opening and closing of the clamping body are realized. The length of the one-piece clamping body is shorter than the combination of the clamping arm and the sleeve in the prior art under the same scutching requirement. The clamping body and the releasing body are connected into a whole through the first tearing part and can be manufactured in an integrated forming mode. After the clamping piece manufactured by the integrated forming is adopted, the whole tissue clamping and closing device has fewer parts, simpler structure, lower assembly requirement and greatly reduced cost.

Drawings

Drawing (A) 1 Is a schematic structural view of an insertion type tissue clamping device in an embodiment of the present applicationWherein the transmission component adopts an omitted drawing method;

drawing (A) 2 The connecting structure of the clamping piece and the transmission component is a partial sectional view in one embodiment of the application;

drawing (A) 3 Is a schematic structural view of the clamping body in a clamping state in one embodiment of the present application;

drawing (A) 4 Is a schematic structural view of the clamping body in an open state in one embodiment of the present application;

drawing (A) 5 The structure of the insertion type tissue clamping device in one embodiment of the application is schematically shown in the open state (the moving rod moves in the first stroke);

drawing (A) 6 Is shown as a drawing 5 The structure schematic diagram of the clamping piece after the part of the clamping piece is cut off in the state shown;

drawing (A) 7 Is a structural schematic diagram of the insertion type tissue clamping device in the clamping state (the moving rod moves in the second stroke) in one embodiment of the application;

drawing (A) 8 Is shown as a drawing 7 The structure schematic diagram of the clamping piece after the part of the clamping piece is cut off in the state shown;

drawing (A) 9 In one embodiment of the present application, the structure of the insertion-type tissue clamping device is shown in a clamping state, when the clamping arm is locked in the locking structure (the moving rod moves in the third stroke);

drawing (A) 10 Is shown as a drawing 9 A schematic structural view of the clamping member with a part thereof cut away in the state shown;

drawing (A) 11 In one embodiment of the present application, the insertion tissue clipping device is in a clipping state, and the structure of the retention section and the separation section on the moving rod is schematically illustrated when the second tearing part is broken (the moving rod moves in the third stroke);

drawing (A) 12 Is shown as a drawing 11 The structure schematic diagram of the clamping piece after the part of the clamping piece is cut off in the state shown;

drawing (A) 13 In an embodiment of the present application, the structure of the insertion-type tissue clipping device in the clipping state, when the clipping body and the releasing body are broken from the first tearing portion (the moving rod moves in the third stroke);

drawing (A) 14 Is a schematic view of the unfolded shape of the clamping member in one embodiment of the present application;

drawing (A) 15 Is shown as a drawing 14 The deformation structure of the bendable part in the shown embodiment is enlarged and schematically shown;

drawing (A) 16 The deformation structure of the bendable part in another embodiment of the application is enlarged schematically;

drawing (A) 17 The deformation structure of the bendable part in another embodiment of the application is enlarged schematically;

drawing (A) 18 Is a schematic diagram of a deformable structure of a bendable portion of a clamping member for clamping a thin tissue according to an embodiment of the present application;

drawing (A) 19 Is a schematic diagram of a deformed structure of a bendable part when a clamping piece clamps thicker tissues in one embodiment of the application;

drawing (A) 20 Is a schematic diagram of a deformed structure of a bendable part in another embodiment of the present application;

drawing (A) 21 Is a schematic structural diagram of an integrally formed motion rod in one embodiment of the present application;

drawing (A) 22 The clamping head is in an open self-locking state in an embodiment of the application;

drawing (A) 23 Is a schematic structural diagram of the integrally formed motion rod broken from the second tearing part in one embodiment of the present application;

drawing (A) 24 Is a schematic structural view of a second tearing part on an integrally formed moving rod in one embodiment of the present application;

drawing (A) 25 In an embodiment of the present application, the movable rod is connected to the clamping body in an open state;

drawing (A) 26 In an embodiment of the present application, the movable rod is connected to the clamping body in a clamping state;

drawing (A) 27 The structure of the clamping body and the releasing body is schematically shown when the clamping body and the releasing body are broken through the first tearing part in one embodiment of the application;

drawing (A) 28 Is a structural schematic diagram of the first tearing part in an unbroken state in one embodiment of the application;

drawing (A) 29 Is a schematic structural view of the first tearing part in a breaking state in one embodiment of the present application。

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. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in this specification in order not to obscure the core of the present application with unnecessary detail, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified.

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

Referring to fig. 1-13, the clipping device includes a clipping member 100, a motion bar 200, a transmission assembly 300 and a control handle 400.

Unlike the prior art in which a clamping arm and a sleeve are combined to form a clamping structure, in the present embodiment, the clamping member 100 is an integrally formed structure. The integral structure means that the whole clamping member 100 is integrally formed by processing the same material, rather than 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 employed, processing of a very small gap can be achieved, which is advantageous for miniaturization of the overall structure and improvement of the structural compactness.

Referring to fig. 2-4, the clamping member 100 includes a clamping body 110 and a releasing body 120. The clamping body 110 and the releasing body 120 are formed as an integral structure, and are connected to each other by a structure that can be separated by an external force applied by an operator, for example, the structure may be the first tearing portion 130 shown in the figure or another structure. The first tearing portion 130 allows an operator to separate the grip body 110 and the release body 120 by an external force.

The clamping body 110 comprises at least two clamping arms 111. The holding arms 111 are connected integrally. Each set of clamp arms 111 includes a clamp head 1111 and a bendable portion 1112. The holding arms 111 are arranged in a jaw structure to hold an object. The jaw type structure is a structure capable of firmly grasping an object, for example, in fig. 1 to 13, when the grasping arms 111 are two sets, the two grasping arms 111 are disposed to face each other, and when they are closed as shown in fig. 3 (in a grasping state at this time), the object is grasped, as shown in fig. 18 and 19. In other embodiments, when the number of the holding arms 111 is different, it may have different claw structures, for example, when the number of the holding arms 111 is three, the three holding arms 111 may be arranged in a triangle to grip the object.

Referring to fig. 3 and 4, in an embodiment, the bendable portion 1112 has a semi-cylindrical structure, and when the clamping body 110 is closed, the bendable portion 1112 can form a cylindrical structure. The semi-cylindrical shape is a non-complete cylindrical shape, is not necessarily a half of the cylindrical structure, and may be a third of the entire cylindrical structure or other sizes. In addition, in other embodiments, the bendable portion 1112 may have other structures, such as a sheet shape, and is not limited to the semi-cylindrical structure.

Unlike the prior art in which the opening and closing of the clamp arm is achieved by the sleeve limiting the clamp arm, in this embodiment, the opening and closing of the clamp arm 111 mainly depends on the deformation of the bendable portion 1112. The bendable portion 1112 has a deformable structure that can be bent in a closing direction of the holder 110 and/or in an opening direction of the holder 110. Referring to fig. 1-4, in the embodiment, the initial state of the clamping body 110 is a clamped state, i.e., the bendable portion 1112 is in a clamped state without deformation. At this time, the bendable part 1112 has at least a deformation structure capable of bending the clamping body 110 in the opening direction, and as shown in fig. 4, the clamping body 110 is opened. Of course, in other embodiments, the initial state of the clamping body 110 may be an open state, for example, the bendable portion 1112 is in the open state shown in fig. 4 without deformation. At this time, the bendable portion 1112 has at least a deformable structure capable of bending in the closing direction of the holder 110, and can move to the state shown in fig. 3, thereby closing the holder 110. In other embodiments, the bendable portion 1112 may have a deformation structure capable of bending toward the closing direction of the clamping body 110 and bending toward the opening direction of the clamping body 110, so that the clamping body 110 can be more flexibly changed during the opening and closing processes.

Wherein the clamping head 1111 has a higher bending deformation resistance than the bendable portion 1112 to ensure that the clamping arm 111 provides a better biting effect for the subject. The bending deformation of the bendable portion 1112 can be achieved by an integral structure thereof, for example, by providing a shrink seam capable of shrink deformation on the bendable portion 1112, by changing the thickness of the material of the bendable portion 1112, or by another integral structure, which will be described in more detail later. This bending deformation of the bendable portion 1112 is reversible, that is, the bendable portion 1112 has elasticity and can be restored by springing back when the external force is lost, and thus the bending deformation can be repeated.

The motion bar 200 is used to control the open and clamping state of the clamping member 100. In fig. 1-13, the motion bar 200 is a tension bar. The moving rod 200 is connected to the clamping body 110, and the movement of the moving rod 200 can control the clamping body 110 to move in the opening direction and the clamping direction. The driving assembly 300 serves to support the clamping member 100 and to transmit motion and force to the motion bar 200. Referring to fig. 1 and 2, the driving assembly 300 includes a sleeve assembly 310 and a driving member 320 inserted into the sleeve assembly 310, wherein the driving member 320 is connected to the moving rod 200. The release body 120 of the clip assembly 100 is rotatably coupled to the sleeve assembly 310, for example, by a rotating base 500 mounted on the sleeve assembly 310, so that the clip assembly 100 can be rotated integrally with respect to the sleeve assembly 310. The sleeve assembly 310 is connected to the control handle 400, and the control handle 400 and the transmission member 320 form a linkage structure to control the actions of the transmission member 320, the motion rod 200 and the clamping member 100. For example, an operator may control the rotation of the clamp assembly 100 relative to the cannula assembly 310 by controlling the handle 400, and may also control the opening and closing of the clamp assembly 100 by controlling the handle 400.

The movement of the moving bar 200 may be a movement along its axial direction, a rotational movement, or the like. For example, referring to fig. 5-6, in one embodiment, when the moving rod 200 moves away from the control handle 400 along the axial direction thereof and approaches the clamping body 110 (shown moving to the right), the moving rod 200 can drive the clamping body 110 to expand outward, so as to move the clamping body 110 to the expanded state. Referring to fig. 7-8, in one embodiment, when the moving rod 200 approaches the control handle 400 along the axial direction and moves away from the clamping body 110 (shown as moving leftward), the moving rod 200 can drive the clamping bodies 110 to move inward and close to each other, so as to move the clamping body 110 to the clamping state. Of course, in other embodiments, the movement relationship of the moving rod 200 and the movement relationship of the clamping bodies 110 may be different from those shown in fig. 5 to 8, such as when the moving rod 200 moves toward the control handle 400, the clamping bodies 110 are driven to open, and when the moving rod moves toward the clamping bodies 110, the clamping bodies 110 are driven to close.

Wherein the moving bar 200 has a first stroke, a second stroke, and a third stroke regardless of the movement of the moving bar 200. In the first stroke, the moving rod 200 drives the clamping heads 1111 away from each other to open the clamping heads 1111. In the second stroke, the moving rod 200 drives the clamping heads 1111 to approach each other, and the clamping body 110 moves to the clamping state to clamp the target object. In the third stroke, the clamping body 110 maintains the clamped state and is separated from the moving bar 200, and the release body 120 is disconnected from the first tearing part 130 with the clamping body 110. In the third stroke, the separation of the gripping body 110 from the moving rod 200 and the disconnection of the release body 120 from the gripping body 110 may be simultaneously performed, or may be performed before the other.

The first stroke, the second stroke and the third stroke are three parts of the whole moving stroke of the moving rod 200, and the three strokes may be in the same direction or in different directions between at least two strokes. The strokes may be completely separate, completely unrelated, or may be continuous or overlapping between at least two strokes, e.g., the third stroke may be immediately subsequent to the second stroke. Of course, the second stroke and the third stroke may also be two separate, non-continuous portions.

As an example, referring to fig. 5-6, when the moving rod 200 is in the first stroke, the moving rod 200 is away from the control handle 400 along the axial direction thereof, and when the moving rod 200 moves close to the clamping body 110 (shown moving to the right), the moving rod 200 can drive the clamping body 110 to expand outward, so as to move the clamping body 110 to the expanded state.

Referring to fig. 7-8, at this time, when the moving rod 200 is in the second stroke, the moving rod 200 approaches the control handle 400 along the axial direction thereof, and when the moving rod 200 departs from the clamping body 110 (shown as moving leftward), the moving rod 200 can drive the clamping bodies 110 to approach each other inward, so that the clamping body 110 moves to the clamping state.

Referring to fig. 9-13, when the moving rod 200 is in the third stroke, the moving rod 200 is close to the control handle 400 along the axial direction thereof, and is away from the clamping body 110 (shown as moving leftward), the third stroke is in the same direction as the second stroke, and is tightly connected, i.e. when the clamping body 110 moves to the clamping state, the moving rod 200 is switched 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.

Referring to fig. 9-10, when the moving rod 200 is switched to the third stroke until the moving rod moves to the position shown in the figure, the clamping body 110 is locked, and the moving rod 200 cannot move reversely to open the clamping body 110 again. The movement stroke of the moving bar 200 in this process is a locking stroke.

Referring to fig. 11-12, the motion bar 200 enters the inner disengaging stroke after completing the locking stroke. When the moving rod 200 moves to the position shown in the figure, the clamping body 110 is separated from the moving rod 200, the moving rod 200 cannot drive the clamping body 110 to move any more, the control on the clamping body 110 is lost, and the clamping body 110 is kept in the locking state. The moving stroke of the moving bar 200 in this process is an inner disengaging stroke.

Referring to fig. 13, after the moving rod 200 completes the inner disengaging stroke, it enters the outer disengaging stroke. When the moving bar 200 is moved to the illustrated position, the clamping body 110 and the releasing body 120 are broken from the first tearing portion 130 at this time, and thus the clamping body 110 is left on the object clamped thereby. The detachment body 120, the moving bar 200, and the driving assembly 300 may be withdrawn from the target object. The moving stroke of the moving bar 200 in this process is an outer disengaging stroke.

Of course, while fig. 9-13 illustrate only one embodiment of the third stroke, in other embodiments, the lock-up stroke, the inner disengagement stroke, and the outer disengagement stroke may also be performed in an overlapping manner, such as where the inner and outer disengagement strokes overlap, and the inner and outer disengagement strokes are performed in a synchronized manner.

In the structure shown in each of the above embodiments, the sleeve in the existing structure is omitted, and the movement rod 200 directly drives the clamping body 110, in combination with the deformed state of the bendable part 1112, thereby achieving the opening and closing of the clamping body 110. Because of less restriction of the sleeve on the clamping arm 111, the clamping body 110 is deformed from the bendable portion 1112, and the deformed region is closer to the bottom of the entire clamping body 110, so that the length of the integrated clamping body 110 is shorter than the combination of the clamping arm 111 and the sleeve in the prior art under the same open width requirement. At the same length, the integrated clamping body 110 can be opened to a larger angle than the combination of the clamping arm 111 and the sleeve in the prior art, and can be used for easily clamping the tissues of the target object. When the clamping body 110 is separated from the releasing body 120, the shorter clamping body 110 remains in the target object, so that discomfort caused by the overlong clamping head of the hemostatic clamp (or the tissue clamp) can be reduced, and the problem of excessive abrasion of the target object caused by the overlong clamping head of the hemostatic clamp (or the tissue clamp) can be avoided as much as possible. In addition, the integral structure avoids the fitting clearance of parts necessary for the shaft hole fitting or the sliding displacement, so that the bending repetition precision of the clamp arm 111 is higher.

In addition to the holder 110 itself being integrally formed, in the present embodiment, the detachment body 120, which needs to be detached from the body to be operated, is also integrally formed with the holder 110. The whole machining process of the clamping piece 100 is simple. Compared with the combined structure of multiple parts in the existing hemostatic clamp (or tissue clamp), after the clamping piece 100 manufactured by integral forming is adopted, the whole clamping device has fewer parts, simpler structure, lower assembly requirement, greatly reduced cost and higher control precision. Likewise, the overall length of the clip 100 is also shorter than the length of existing hemostatic clips (or tissue clips). Such a shorter length of clip 100 is easier to pass through in an endoscopic instrument channel due to the very limited inner diameter of the endoscopic instrument channel.

Further, as described above, the bending deformation of the bendable part 1112 is achieved by its integral structure. Referring to fig. 3, 4, 14-17, in some embodiments, an end of the holding body 110 close to the detaching body 120 is a proximal end, an end away from the detaching body 120 is a distal end, and a direction from the proximal end of the holding body 110 to the distal end thereof is a longitudinal direction of the holding body 110. In order to realize the integrated deformation structure, the deformation structure comprises a plurality of first shrinkage joints 1113, and the first shrinkage joints 1113 are sequentially arranged along the longitudinal direction.

In one embodiment, as shown in FIG. 3, the clamping body 110 is maintained in the clamping state in the initial state, the first shrinkage slits 1113 are maintained in the initial state, and the portions of the bendable portion 1112 are not deformed. When it is desired to expand the clamping body 110, as shown in fig. 4, the flexible parts 1112 are deformed outwardly, and the first contraction joint 1113 is contracted to deform, so that the outer sides of the flexible parts 1112 (the sides of the clamping arms 111 facing away from each other) are contracted, so that the entire clamping head 1111 is expanded.

Referring to fig. 3, 4, and 14-17, in one embodiment, the first contraction joint 1113 extends around the circumference of the bendable portion 1112. The first shrinkage seams 1113 are arranged in parallel. Of course, the first shrinkage joints 1113 may be arranged in other non-parallel arrangements besides being parallel to each other. The first shrinkage joints 1113 are uniformly arranged in parallel along the circumferential direction of the bendable part 1112, so that the bending deformation direction of each first shrinkage joint 1113 can be uniform, and the bending deformation of the clamping body 110 is smoother and more stable.

To achieve a smoother bend change, in one embodiment, the first seams 1113 are divided into groups, each group of first seams 1113a having at least one first seam 1113. As shown in fig. 3 and 4 and fig. 14-15, each set of first shrink seams 1113a has two first shrink seams 1113. As shown in fig. 16 and 17, in this embodiment, each set of first shrink seams 1113a has one first shrink seam 1113. The contraction of each first contraction joint 1113 can make the bendable part 1112 have a certain bending angle, and the combination of the plurality of first contraction joints 1113 can make the bendable part 1112 have a larger opening and closing angle. The length of all first shrinkage joints 1113 in the longitudinal direction determines the bending deformation area of the whole bendable portion 1112, and the number of first shrinkage joints 1113a, the longitudinal gap between adjacent first shrinkage joints 1113a, the number of first shrinkage joints 1113 in the first shrinkage joint 1113a, and the like can be flexibly set according to actual requirements. For example, first shrink seam group 1113a may be 4-6 groups.

Referring to FIG. 17, in one embodiment, the first contraction joint 1113 has an elongated slot shape, and the middle of the first contraction joint 1113 has two opposite convex arc-shaped edges 1113a. When the clamping member 100 is opened to a limited position, the arc-shaped sides 1113a contact each other, thereby determining the maximum opening angle. When clamp 100 is in the clamping position, arcuate edges 1113a contact each other, thereby providing support to clamp 100.

In view of the need for minimally invasive surgery, the clipping device is usually very fine and small, so that the clipping element 100 is usually not suitable for use with a material having a large thickness on the premise of satisfying the small volume of the clipping device. However, the thinner thickness requirement may result in weakening the strength of the bendable portion 1112, and in particular, when the external force applied by the operator is too large, which causes the clamping arm 111 to bend outward at too large an angle, as shown in fig. 4, the clamping arm 111 may be broken from the bendable portion 1112. In this regard, in one embodiment, as shown in fig. 4, the bendable portion 1112 has a limiting structure 1114, and the limiting structure 1114 is used to limit the maximum angle at which the bendable portion 1112 can bend in the opening direction. That is, the bendable portion 1112 can be freely bent within the maximum angle. When the bending angle reaches the maximum angle, the limiting structure 1114 starts to act to limit the bendable part 1112 to be bent outwards continuously, thereby protecting the bendable part 1112 and the clamping body 110. The limiting structure 1114 primarily achieves the limitation of the maximum angle by limiting in the longitudinal direction of the gripping body 110.

Referring to fig. 3, 4 and 14-17, in one embodiment, each of the limiting structures 1114 includes a plurality of limiting units 1114a arranged along the longitudinal direction of the clamping body 110. The stopper unit 1114a includes a first stopper 1115 and a second stopper 1116 that are disposed opposite to each other. As shown in the enlarged partial views of a and b in fig. 15, a gap 1117 is provided between the first stopper 1115 and the second stopper 1116, and during the bending process of the bendable portion 1112 toward the opening direction, the first stopper 1115 and the second stopper 1116 approach each other to form a fastening structure (see the enlarged partial view of b in fig. 15). That is, in the initial state, a gap 1117 is left between the first stopper 1115 and the second stopper 1116 as shown in a in fig. 15, when the clamping body 110 gradually expands outward, the first stopper 1115 and the second stopper 1116 relatively move in the longitudinal direction, the gap 1117 gradually decreases, and finally when the bendable portion 1112 reaches the maximum angle, as shown in b in fig. 15, the first stopper 1115 and the second stopper 1116 are attached to each other to form a stopper.

Referring to fig. 14-17, in one embodiment, the first stopper 1115 and the second stopper 1116 are two hook-type stoppers that engage with each other. The limit hook structure can be replaced by other structures with similar functions. Referring to fig. 3 and 4, in an embodiment, the first shrinkage joint 1113 is located in the middle of the circumference of the bendable portion 1112, the number of the limiting structures 1114 is at least two, and the limiting structures 1114 are respectively arranged on two sides of the bendable portion 1112 in the circumference of the bendable portion 1112, so as to further ensure that the whole bendable portion 1112 can be synchronously bent and limited.

Referring to fig. 3 and 4 and fig. 14-17, in an embodiment, in the same limiting unit 1114a, the first limiting block 1115 and the second limiting block 1116 are formed by dividing the sidewall of the bendable portion 1112, which is located at the lateral side of the first shrinkage joint 1113, and one ends of the first limiting block 1115 and the second limiting block 1116, which are close to the first shrinkage joint 1113, are connected into a whole, and the other ends are separated from each other. The first stopper 1115 and the second stopper 1116 may also expand with the gripping body 110 as the gripping body 110 expands outward.

As shown in fig. 3, 4 and fig. 14-15, each set of first shrinkage joints 1113a may be circumferentially aligned with one of the limiting units 1114a, so as to ensure that the limiting action of the limiting units 1114a can accurately act on the corresponding first shrinkage joints 1113, so as to prevent the first shrinkage joints 1113 from continuing to shrink and deform to cause the breakage of the bendable portion 1112 after bending to the maximum angle.

The number of the limiting units 1114a may be greater than the number of the first shrinkage joints 1113a, so as to completely cover all the first shrinkage joints 1113 in the longitudinal direction, thereby achieving a better limiting effect. Of course, the number of spacing units 1114a may be less than or equal to the number of first shrinkage groups 1113a.

Further, referring to fig. 14-17, in one embodiment, a second shrink seam 1118 is disposed between the first stopper 1115 and the second stopper 1116, at least partially along the circumference of the bendable portion 1112. The second shrink seam 1118 can space the first stop block 1115 from the second stop block 1116 to allow relative movement therebetween. The second shrink seam 1118 is in communication with a gap 1117 between the first stop block 1115 and the second stop block 1116.

Considering that the bending motion of the clamping body 110 in the opening direction and the bending motion in the clamping direction are often accompanied by the twisting motion around the circumference thereof, referring to fig. 14-17, in one embodiment, two ends of each set of first contraction joint 1113a respectively extend into the space between the second contraction joints 1118 of two longitudinally adjacent limiting units 1114a, and the overlapping area between the first contraction joint 1113 and the second contraction joints 1118 forms a twisting deformation segment 1111112, so that the bendable portion can be bent and twisted. When the twisted segment 1119 is provided, the bending deformation of the clamping body 110 is smoother, and the bendable portion 1112 is prevented from being broken by the torsion. By adjusting the circumferential length and the longitudinal height of the distorted section 1119, the maximum opening angle, the bending flexibility or the supporting ability of the bendable part 1112 can be further changed, which can be flexibly set according to actual requirements.

In the embodiment shown in fig. 15 and 17, the second shrink seams 1118 are arranged in a straight line. In the embodiment shown in FIG. 16, the second shrink seams 1118 are U-shaped.

Further, as described above, after the clamping body 110 clamps the object 1, the moving bar 200 is moved to a predetermined locking structure together with the clamping body 110 to be locked. However, in practical use, when the clamping bodies 110 have different hardness or thickness for clamping human tissue (as shown in fig. 18 and 19), the closing angle of the clamping bodies 110 is limited. Since the closing angle is associated with the stroke of the moving bar 200, at this time, the clamping body 110 and the moving bar 200 cannot be moved to the position of the locking structure, and the clamping body 110 cannot be maintained in the clamping state.

To address this issue, and referring to fig. 18 and 19, the second shrink seam 1118 has a gap in the longitudinal direction. The second shrinkage joint 1118 of the limiting structure 1114 forms an adaptive floating structure capable of deforming towards the clamping direction, so that when the clamping body 110 clamps the target 1, the bendable part 1112 can deform towards the closed direction in an adaptive bending manner according to the volume of the target 1, an adaptive stroke range is provided for the moving rod 200 and the clamping body 110, the rigid body deformation margin of the moving rod 200 is increased, the moving rod 200 and the clamping body 110 can move to the locking position of the locking structure all the time, and accurate and reliable locking is achieved.

Specifically, referring to fig. 18, when the clamping body 110 clamps the thin object 1, the clamping body 110 may be normally closed, the second shrinkage joint 1118 maintains a normal clearance (as shown in a partially enlarged view in fig. 18 a), the moving rod 200 and the clamping body 110 may accurately move to the position of the locking structure as shown by the above locking stroke, and the clamping body 110 may be locked in the clamping state. Referring to fig. 19, when the clamping bodies 110 clamp a thick object 1, the clamping bodies 110 cannot be closed to the extent shown in fig. 18, and at this time, the second contraction joint 1118 can be deformed toward the closing direction of the clamping bodies 110 by pulling the motion bar 200 (as shown in the partially enlarged view of a in fig. 19). For example, in one embodiment, each second shrink seam 1118 is capable of providing a compression of 0.02 MM to 0.05MM in the longitudinal direction, and for the number of second shrink seams 1118 shown, the plurality of second shrink seams 1118 can be added to provide a deflection of approximately 0.1 MM to 0.2MM, thereby allowing the bendable portions 1112 to flex inwardly as shown in FIG. 19 (the bendable portions 1112 are deformed to project slightly outwardly on either side in FIG. 19) to compensate for lost travel of the clamp body 110, and to allow the clamp body 110 to be locked into the locked configuration.

The above-mentioned embodiment shows a structure in which the bendable portion 1112 is bent and deformed by forming the contraction joint, and the deformation structure of the bendable portion 1112 of the present embodiment is not limited thereto, and may be realized by other means. For example, referring to fig. 20, in one embodiment, the thickness of the bendable portion 1112 may be thinner than other portions of the clamping body 110, such as the clamping head 1111 and the connecting portion 112 (described in detail later), so that the bendable portion 1112 can be preferentially bent and deformed when the motion bar 200 moves the clamping body 110.

Further, to reduce interference between the gripping bodies 110 when closed, in one embodiment, opposing ends between the gripping bodies 110 are provided with an escape structure 1110 to escape from each other when the gripping bodies 110 are closed. Referring to fig. 16, in this embodiment, the opposing ends of the gripping bodies 110 are retracted inwardly to form an escape structure 1110, and an escape slot is formed between two opposing gripping bodies 110 by the retracted region. The width of the avoiding groove gradually increases along the longitudinal direction of the clamping body 110, wherein one end of the avoiding groove close to the clamping head 1111 is wider than the other end. Of course, the avoidance structure 1110 may be other structures capable of performing an avoidance function, and is not limited to the illustrated structure.

Further, the movable rod 200 may be connected to the clamping body 110 through various structures, as long as the movable rod can drive the clamping body 110 to move in the opening direction and the clamping direction. The moving bar 200 may be directly connected to the clamping body 110 or may be connected to the clamping body 110 through the clamping body connection structure 600.

Referring to fig. 6, 21 and 22, in one embodiment, the clamping body connecting structure 600 includes two connecting rods 610, one end of each connecting rod 610 is connected to the distal end of the motion rod 200 and can rotate around a shaft 620, and the other end of each connecting rod 610 is connected to and can rotate around a transverse shaft of the clamping head 1111. The connecting rod 610 is similar to a Y shape, and aims to effectively transmit the pushing force and the pulling force of the up-and-down movement of the moving rod 200 to the clamping head 1111, so as to control the opening and closing of the clamping head 1111.

Referring to fig. 22, when the moving rod 200 moves in the first stroke, the clamping body 110 can be opened in the opening direction along with the movement of the moving rod 200 away from the end of the control handle 400. The rotation center a of the link 610 and the motion bar 200 can cross the connection line B between the link 610 and the clamping head 1111, so as to form a self-locking function, so that the clamping body 110 is kept in an open state, cannot be easily closed by an external force, and can only be retracted by the control handle 400 controlling the clamping head 1111.

Of course, the clamp body connection structure 600 may be connected by other structures, such as various clamp arm and pull rod connection methods disclosed in the prior art.

Further, referring to fig. 3 and 4, in one embodiment, the clamping body 110 includes a connecting portion 112. The connecting portion 112, the bendable portion 1112 and the clamping head 1111 are connected in sequence. The first tear portion 130 is connected between the connection portion 112 and the detachment body 120.

Referring to fig. 3-13, the connecting portion 112 has the above-mentioned locking structure 1121, and the locking structure 1121 is used for locking the clamping body 110 in the clamping state. Of course, in other embodiments, the clamping body 110 may not include the connecting portion 112, and the locking structure 1121 may be directly disposed on the bendable portion 1112 or other structures.

As described above, the locking structure 1121 is used to lock the clamping body 110 in the clamped state. The locking structure 1121 at least prevents the clamping body 110 from moving toward the opening direction, so as to ensure that the clamping body 110 is always in the clamping state. Of course, the locking structure 1121 may also prevent the movement of the clamping body 110 toward the control handle 400 at the same time, which facilitates the disengagement of the clamping body 110 from the moving bar 200. To achieve this locking action, the locking structure 1121 may be lockingly engaged with the motion bar 200, the clamping body coupling structure 600, and the clamping body 110 itself.

In one embodiment, the motion bar 200 or the clamping body connecting structure 600 has a lock engagement portion 210, and when the motion bar 200 moves along the third stroke, the lock structure 1121 is located on the moving path of the lock engagement portion 210; when the locking engagement portion 210 moves to the locking structure 1121, the two form a locking engagement, and the clamping body 110 is maintained in a clamped state.

Referring to fig. 6, 10, 21 and 22, in one embodiment, the clamping body 110 is formed in a cylindrical structure. One end of the moving bar 200 is inserted into the cylindrical structure and is connected with the clamping body 110. The locking engagement portion 210 includes an elastic body protruding toward the clamping body 110, and the locking structure 1121 includes a locking groove engageable with the elastic body. The elastic body is located in the clamping body 110 and is in an extrusion deformation state, and the elastic body can be clamped with the clamping groove under the action of elastic force.

Referring to fig. 6, 10, 21 and 22, the third stroke of the moving rod 200 moves from the clamping body 110 to the releasing body 120, and the elastic body is a spring integrally formed on the moving rod 200 and inclines to one side of the distal end of the clamping body 110 along the protruding direction of the elastic body. As shown in fig. 6, the obliquely arranged resilient sheet can move along the inner wall of the clamping body 110 to the side of the control handle 400 when the moving rod 200 moves along the third stroke, so as to prevent the resilient sheet from being clamped at other parts of the clamping body 110. As shown in fig. 10, when the resilient strip moves to the slot position, the resilient strip can be clamped into the slot to prevent the moving rod 200 and the clamping body 110 from retracting to open the clamping state.

Of course, the illustrated spring plate is only an example of the locking engagement portion 210, and in other embodiments, other structures that may perform the locking function may be adopted, such as the locking manner of the clamping arm or the pull rod and the sleeve disclosed in the prior art.

The number of the locking structures 1121 and the locking engagement portions 210 is one or more. Referring to fig. 21 and 22, in order to lock the clamping body 110 more stably, in an embodiment, the number of the locking structures 1121 and the locking engagement portions 210 is two or more (two in the figure). In order to provide uniform force, in one embodiment, the locking structures 1121 are uniformly distributed around the circumference of the clamping body 110 (i.e., the adjacent locking structures 1121 are spaced at the same angle), and the locking engagement portions 210 are opposite to the clamping body 110, for example, may also be uniformly distributed around the circumference of the motion bar 200.

Further, in order to achieve the internal disengagement of the clamping body 110 from the motion bar 200, referring to fig. 21, 23 and 24, in one embodiment, the motion bar 200 is an integrally formed structure having a retaining section 220 and a separating section 230. The retention section 220 and the separation section 230 are integrally connected by a second tear portion 240.

The retention segment 220 is connected to the gripping body 110 by a gripping body connection structure 600. The locking engagement portion 210 is located on the retention section 220 or on the gripping body connection structure 600. As shown in fig. 12, when the moving bar 200 is located at the inner escape stroke, the second tearing portion 240 is broken and the remaining section 220 and the separating section 230 are separated. The retaining section 220 is retained in the surgical object together with the holding body 110, and the separating section 230 is removed from the surgical object together with the releasing body 120.

In this embodiment, the retaining section 220 and the separating section 230 are integrally formed, i.e. the whole motion bar 200 is integrally formed from the same material, rather than being assembled by combining two or more parts. Even more, the locking engagement portion 210 may be integrally formed with the retention section 220 and the separation section 230. The motion rod 200 is convenient to manufacture, does not need secondary assembly, and is lower in cost and better in stability. The width of the second tearing part 240 can be reserved according to needs, and a plurality of second tearing parts 240 can be arranged according to functional needs, so that the structure is more reliable and stable.

To assist the movement of the rod 200 to perform the inner disengagement, referring to fig. 22 and 24, in one embodiment, the disengagement body 120 has a stop structure 121, and the stop structure 121 is located on the moving path of the retention segment 220. When the moving bar 200 moves along the third stroke, specifically, when the moving bar 200 is located at the inner disengaging stroke, the stopper 121 prevents the retaining section 220 from continuing to move with the separating section 230 to assist in separating the retaining section 220 from the separating section 230.

In the embodiment shown in fig. 24, the moving rod 200 has a slot 260 disposed along the axial direction thereof, and the stop structure 121 is disposed to protrude toward the moving rod 200 and extend into the slot 260 to abut against the groove wall of the slot 260 when the moving rod 200 moves along the inner disengaging stroke.

Further, referring to fig. 24, in an embodiment, an end of the retention section 220 opposite to the separation section 230 has an inner concave area 241, and the second tearing portion 240 is disposed in the inner concave area 241. As shown in fig. 23 and 24, the second tearing portion 240 is designed such that after being broken, its broken surface can be accommodated in the concave region 241, so as to prevent the sharp burr from being exposed after being broken and avoid damage to the surgical object.

In the figure, the concave region 241 has a circular arc-shaped end surface. In other embodiments, the concave region 241 may have other end surfaces.

Of course, the moving rod 200 may be internally separated by other structures besides the above-mentioned integrally formed structure. Referring to fig. 25 and 26, in one embodiment, the motion bar 200 is configured to be detachable from the base structure by a split-type combination. Specifically, the motion bar 200 has a snap groove 281, the snap groove 281 has an opening 282 smaller than the groove cavity thereof, and the motion bar 200 is snap-connected with the clamping body connection structure 600 through the snap groove 281, and specifically can be connected on the mounting shaft 620 of the connecting rod 610. When the moving bar 200 moves along the first stroke and the second stroke, the clamping body connecting structure 600 and the clamping body 110 can move together with the moving bar 200 to realize the opening and clamping of the clamping body 110, limited by the blocking function of the opening 282. As shown in fig. 25, after the moving rod 200 is located at the inner disengagement stroke, the clamping body 110 and the clamping body connecting structure 600 are blocked and cannot move further to the control handle 400, and at this time, under the external force, the clamping body connecting structure 600 is disengaged from the opening 282 of the catching groove 281, and the moving rod 200 is disengaged from the clamping body connecting structure 600, thereby achieving the inner disengagement.

The above is only an exemplary example of two inner disengaging structures, and in other embodiments, the moving rod 200 and the clamping body 110 may be separated by other inner disengaging structures, such as an inner disengaging structure of a pull rod and a clamping arm in the prior art.

Further, referring to fig. 27-29, in the external detachment structure, the first tearing portion 130 is at least one, an end of the holding body 110 opposite to the detachment body 120 has a concave region 1122, the first tearing portion 130 is disposed in the concave region 1122, and the detachment body 120 and the holding body 110 are connected only by the first tearing portion. In order to uniformly apply the force, in one embodiment, the first tearing portions 130 are uniformly distributed around the circumference of the clamping body 110 and the releasing body 120.

Referring to fig. 13 and 27-29, in one embodiment, the releasing body 120 includes a cylindrical main body 122 and a hanging portion 124, the side wall of the main body 122 has a hanging cavity 123, and the hanging portion 124 is disposed in the hanging cavity 123. The hanging portion 124 is aligned with the first tear portion 130.

Referring to fig. 5, 6, 11-13, the hanging portion 124 is provided with a follower 125, for example, the follower 125 is a follower shaft fixedly mounted on the hanging portion 124, and the follower shaft traverses the hanging portion 124. The follower 125 is used to move the hanging portion 124 together with the moving bar 200 to a side near the control handle 400 when the moving bar 200 moves along the third stroke. Specifically, as shown in fig. 5 and 6, the motion bar 200 may further include a sliding groove 250, and the follower 125 is disposed at the bottom of the sliding groove 250. As shown in fig. 11-13, when the moving rod 200 moves to the side of the control handle 400, when the moving rod 200 enters the outer disengaging stroke, the top of the sliding slot 250 moves to the follower 125, so as to start to move the follower 125 and the hanging part 124 to the side of the control handle 400, and further to separate the disengaging body 120 from the clamping body 110.

Referring to fig. 28 and 29, both sides of the hanging portion 124 are connected to the body 122 by the suspension arms 127 so that the hanging portion 124 can be more easily deformed with respect to the body 122. Specifically, when the moving rod 200 moves along the outer disengaging stroke, the disengaging body 120 cannot move to the side of the control handle 400 alone, supported by the rotary base 500 and the sleeve assembly 310 as a whole. When the motion bar 200 pulls the hanging portion 124, the main body 122 of the detaching body 120 remains stationary, and the cantilever 127 of the hanging portion 124 is deformed by the pulling force of the motion bar 200. During the deformation of the hanging portion 124, the main body 122 of the detachment body 120 forms a reverse support to the clamping body 110, and thus the material of the hanging arm and the first tearing portion 130 is gradually elongated. As shown in fig. 28, the hanging portion 124 is outwardly disengaged from the gripping body 110 when the yield limit is reached. Thereafter, the detachment body 120, the motion bar 200, together with the driving assembly 300, may be removed from the surgical object.

In order to prevent the hanging part 124 from being deformed in an undesired direction when the motion bar 200 pulls the hanging part 124, referring to fig. 28 and 29, in one embodiment, the hanging cavity 123 has a guide groove 126 disposed along an axial direction of the detaching body 120, and the hanging part 124 is disposed in the guide groove 126 to guide the hanging part 124 to move into the guide groove 126. The guide groove 126 defines a guide direction aligned with the first tear portion 130, thereby making it easier for the hanging portion 124 to be broken from the first tear portion 130.

Further, referring to fig. 1 and 2, in connection with the transmission assembly 300, the sleeve assembly 310 may generally include a spring-loaded sleeve 311, and a transmission member 320 (e.g., a traction control wire) is disposed in the spring-loaded sleeve 311. The motion rod 200 can be fixedly connected to the transmission member 320 through a variable diameter adapter ceramic 321 or other structures. The spring support sleeve 311 is externally sleeved with an adapter tube 312, the adapter tube 312 is rotatably connected with the rotary base 500, and the clamping member 100 is mounted on the rotary base 500, so that the whole clamping member 100 can rotate together with the rotary base 500 relative to the transmission assembly 300.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person 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 is of an integrally formed structure and comprises a clamping body and a releasing body, the clamping body comprises at least two clamping arms, the clamping arms are connected, and each group of clamping arms comprises a clamping head and a bendable part; the bendable part has a deformation structure capable of bending towards the closing direction of the clamping body and/or bending towards the opening direction of the clamping body, and the clamping body is connected with the releasing body through a structure capable of being separated under the action of external force applied by an operator;

the moving rod is connected with the clamping body to drive the clamping body to open and close;

the transmission component comprises a sleeve component and a transmission part penetrating through the sleeve component, the transmission part is connected with the moving rod, and the release body 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 body moves to a clamping state to clamp the target object; in the third stroke, the clamping body maintains the clamping state and is separated from the moving rod, and the separation body is disconnected from the clamping body.
The insertable tissue closure device of claim 1, wherein the deformation structure comprises a plurality of first shrink seams arranged sequentially in a longitudinal direction of the gripping body.
The insertable tissue closure device of claim 2, 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; 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 insertable tissue closure device of claim 3, wherein the first shrink seam extends around a circumference of the bendable portion.
The insertable tissue closure device of claim 4, wherein the bendable portion has a stop feature for limiting a maximum angle of bending of the bendable portion toward the opening direction.
The insertable tissue closure device of claim 5, wherein each of the retention structures comprises a plurality of retention units arranged along the longitudinal direction of the clamping body, the retention units comprise a first retention block and a second retention block which are oppositely arranged, a gap is formed between the first retention block and the second retention block, the gap is formed between the first retention block and the second retention 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 insertable tissue closure device of claim 6, wherein the first and second stoppers are formed by dividing the sidewall of the flexible portion, which is located at the side of the first contraction joint, by the second contraction joint in the same stopper unit, and the first and second stoppers are integrally connected at one ends thereof adjacent to the first contraction joint and separated from each other at the other ends thereof.
The insertable tissue closure device of claim 7, wherein the initial state of the gripping body is a gripping state; the second shrinkage joint has a gap in the longitudinal direction, and the second shrinkage joint constitutes an adaptive floating structure capable of deforming in the clamping direction, so that the bendable part can adaptively bend and deform in the closing direction according to the volume of the object when the clamping body clamps the object.
The insertable tissue closure device of any one of claims 1-8, wherein opposing ends between the gripping bodies are provided with relief structures to relieve each other when the gripping bodies are closed.
The insertable tissue closure device of any one of claims 1-9, wherein the body comprises a connecting portion, and the connecting portion, the bendable portion, and the gripping head are integrally connected in series; the clamping body is connected with the detaching body through the connecting part; the connecting part is provided with a locking structure, and the locking structure is used for locking the clamping body in the clamping state.
The insertable tissue closure device of claim 10, wherein the holder forms a cylindrical structure, and wherein one end of the motion bar extends into the cylindrical structure and is connected to the holder; the motion pole has locking cooperation portion, locking cooperation portion includes the orientation the protruding elastomer that sets up of clamping body, the locking structure including can with elastomer complex draw-in groove, the elastomer is located in the clamping body to be in the extrusion deformation state, the elastomer can under the elastic force effect with the draw-in groove joint.
The clamping piece of the plug-in tissue clamping device is characterized by comprising a clamping body and a release body, wherein the clamping body and the release body are of an integrally formed structure, the clamping body comprises at least two clamping arms, the clamping arms are connected with each other, and each group of clamping arms comprises a clamping head and a bendable part; the bendable portion has a deformable structure that can be bent in a closing direction of the clamp arm and/or in an opening direction of the clamp arm, and the clamp body and the detachment body are connected by a structure that can be detached by an external force applied by an operator.
The clip of claim 12, wherein the deformation structure comprises a plurality of first shrink seams arranged in series longitudinally along the clip body.
The clip of claim 13, wherein the flexible portion has a plurality of second pinch seams extending circumferentially thereof, the second pinch seams being arranged in 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 clip of claim 14, wherein the first shrink seam extends around a circumference of the flexible portion.
The clamping member of claim 14 or 15, wherein the first contraction joint is located at a middle portion of a circumferential direction of the bendable portion, the bendable portion has at least two sets of limiting structures, and the limiting structures are respectively provided at both sides of the bendable portion in the circumferential direction of the bendable portion to limit a maximum angle of bending of the bendable portion to an opening direction of the clamping member.
The clamping member of claim 16, wherein each of the limiting structures comprises a plurality of limiting units arranged along the longitudinal direction of the clamping body, 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 along the longitudinal direction, 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 of claim 17, 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 on the side of the first shrinkage joint, through the second shrinkage joint, one ends of the first limiting block and the second limiting block, which are close to the first shrinkage joint, are connected into a whole, and the other ends are separated from each other.
The clamp of any of claims 16-18, wherein the initial state of the clamp body is a clamped state; the second shrinkage joint has a gap in the longitudinal direction, and the second shrinkage joint constitutes an adaptive floating structure capable of deforming in the clamping direction, so that the bendable part can adaptively bend and deform in the closing direction according to the volume of the object when the clamping body clamps the object.
The clip defined in any one of claims 12 to 19 wherein the disengagement body has a stop formation located in the path of travel of the motion bar, the stop formation being adapted to abut the motion bar when the motion bar is moved towards the control handle.
The clip of any of claims 12-20, wherein the structure separable from the external force applied by the operator is a first tear-away portion, the first tear-away portion being at least one, an end of the clip body opposite the release body having a recessed area, the first tear-away portion being disposed within the recessed area, the release body and the clip body being connected only by the tear-away portion.