Insertable tissue occlusion apparatus and transmission member thereof

Abstract

Provided is an insertable tissue occlusion apparatus and a transmission member thereof. In the insertable tissue occlusion apparatus, when the holding member grips a large tissue or a stiff tissue, an operator can apply greater operating force to the holding member via a transmission member. Before the holding member achieves an expected holding effect, a holding / abutting part remains constantly opposite to a limiting part and cannot move to a locking window. In this case, even if a greater force is applied to the transmission member, the limiting part limits the holding / abutting part, thereby keeping a pull rod and a separation head in an integral transmission structure. The pull rod can actuate the separation head to continue to move towards the locking window until the holding / abutting part also moves to the locking window. A coupling joint can push the holding / abutting part to move towards the two lateral sides of the separation head, such that the coupling joint can be separated from a coupling groove, and the holding / abutting part can be locked into the locking window. After being locked to the locking window, the plastically deformed holding / abutting part will not be elastically repositioned, so as to guarantee that the holding member is always in a reliable occlusion state.

Description

Insertable tissue clip closure device and transmission member thereof TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a structure of an insertable tissue clip closure device and a transmission member thereof. BACKGROUND

[0002] The insertable tissue clip closure device is an insertable medical device, which is used to clamp the tissue in the human or animal body to achieve hemostasis or closure. It includes hemostatic clips, tissue clips, etc. For example, in the minimally invasive treatment of digestive tract diseases, the tissue clip closure 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 achieve hemostasis or closure at gastrointestinal bleeding or wound sites.

[0003] After the clamping component completes the clamping action, in order to take out the lead-in component from the human body and leave the clamping component in the human body, the clamping component needs to be separated from the lead-in component. In the prior art, the clamping component is detachably connected to the lead-in component. Specifically, after the clamping component completes the clamping action, a certain amount of pulling force is applied through the lead-in component. At this time, since the clamping component has completed the closure, the clamping component cannot move and cannot move much because it is clamped to the tissue in the body. Therefore, the pulling force is concentrated on the connection between the clamping component and the lead-in component. When the pulling force reaches or exceeds the separation threshold, not only can the lead-in component be separated from the clamping component, but also the clamping component can be left in the body, and the lead-in component can be withdrawn from the body. Moreover, the clamping component after separation needs to form a self-locking structure, and the self-locking structure is usually achieved through structural changes after the clamping component completes the desired clamping action, that is, the clamping component needs to move to a set position to form the self-locking.

[0004] However, in actual operation, when the clamping component performs the clamping action in the human body, the clamping component may clamp a large or hard tissue, making it difficult to continue the clamping action. At this time, the clamping component does not achieve the desired clamping effect, and the clamping component also does not move to a position where the self-locking can be formed. At this time, the pulling force can only be increased to further control the clamping component to clamp the large or hard tissue with a larger pulling force. However, before the clamping component achieves the desired clamping effect on the large or hard tissue, the pulling force has reached or exceeded the separation threshold, resulting in the separation of the clamping component from the lead-in component. However, the clamping action is not completed at this time, and the clamping component cannot achieve self-locking, resulting in the failure of the clamping operation. SUMMARY

[0005] The present application provides an insertable tissue clip closure device to solve the problem that the existing insertable tissue clip closure device cannot successfully clamp a large or hard tissue.

[0006] The application provides a transmission member of an insertion type tissue clamping device, which can be used in the insertion type tissue clamping device to provide a new structure in which a separation head and a pull rod are separated.

[0007] To achieve the above-mentioned purpose, some embodiments of the application provide an insertion type tissue clamping device, which comprises:

[0008] a clamping member for clamping and releasing tissue in a target object;

[0009] a sleeve, a barrel of the sleeve has a limiting portion and a locking window which are sequentially arranged in a direction away from the clamping member;

[0010] and a transmission member, the transmission member has a separation head and a pull rod, the pull rod is used to be connected with a control handle, the separation head extends into the sleeve and is connected with the clamping member, the separation head and the pull rod form an integral transmission structure which can be separated from each other, the integral transmission structure is movably arranged relative to the sleeve, and a movement direction of the integral transmission structure relative to the sleeve includes a first direction and a second direction, when the integral transmission structure moves in the first direction, the clamping member is driven to clamp, and when the integral transmission structure moves in the second direction, the clamping member is driven to open;

[0011] the separation head has a butt joint groove and a clamping portion which is a side groove wall of the butt joint groove and can move to both sides of the butt joint groove, the clamping portion is made of a material which can be plastically deformed, and the pull rod has a butt joint head which is inserted into the butt joint groove;

[0012] when the clamping portion is opposite to the limiting portion, the limiting portion is located outside the clamping portion to limit the movement distance of the clamping portion to both sides of the separation head, and the clamping portion limits the butt joint head to prevent the butt joint head from being separated from the butt joint groove;

[0013] when the integral transmission structure moves in the first direction to the state that the clamping portion is opposite to the locking window, the butt joint head can push the clamping portion to be plastically deformed to both sides of the separation head, the butt joint head can push the clamping portion to move to both sides of the separation head to release the limitation of the clamping portion on the butt joint head, so that the butt joint head can be separated from the butt joint groove, and the clamping portion can be clamped into the locking window.

[0014] According to the insertion type tissue clamping device provided by the above embodiment, the device comprises a clamping member, a sleeve and a transmission member. The transmission member is used to connect the control handle and the clamping member, so that the clamping and opening of the clamping member can be controlled by the control handle. In the clamping device, the effect of removing the overall transmission structure between the separation head and the pull rod is not only affected by the pulling force on the pull rod, but also affected by the position relationship between the clamping portion and the limiting portion on the sleeve. When the clamping member clamps larger or harder tissues, the operator can exert greater force on the clamping member through the transmission member to control the clamping member to clamp the larger or harder tissues more powerfully. The position of the clamping portion in the sleeve is related to the clamping degree of the clamping member. Before the clamping member completes the desired clamping effect, the clamping portion is always opposite to the limiting portion and cannot move to the locking window. At this time, even if greater force is exerted on the transmission member, the clamping portion is always in a state of preventing the abutment head from being separated from the abutment groove due to the limiting of the limiting portion on the clamping portion. The overall transmission structure is always maintained between the pull rod and the separation head, and the pull rod can drive the separation head to continue to move to the locking window position until the desired clamping effect is completed. At this time, the clamping portion also moves to the locking window, and the abutment head can push the clamping portion to move to both sides of the separation head to remove the limiting of the clamping portion on the abutment head, so that the abutment head can be separated from the abutment groove, and the clamping portion can also be clamped into the locking window to lock the clamping member in the clamped state. At the same time, after the plastically deformed clamping portion is locked into the locking window, it will not rebound, which can ensure that the clamping member is always in a reliable clamped state.

[0015] In some embodiments, the abutment groove has a main groove cavity and a separation groove in communication with the main groove cavity, and the abutment head has a head portion and a neck portion, the head portion is arranged in the main groove cavity, and the neck portion is arranged in the separation groove.

[0016] When the clamping portion is opposite to the limiting portion, the cavity wall of the separation groove limits the head portion to prevent the head portion from being separated from the separation groove, so that the separation head and the pull rod maintain the overall transmission structure.

[0017] When the overall transmission structure moves to the state that the clamping portion is opposite to the locking window in the first direction, the head portion can push the clamping portion to move to both sides of the separation head to expand the width of the separation groove, so that the head portion is separated from the separation groove.

[0018] In some embodiments, the side wall of the head portion has a guide surface, which is arranged to incline outwardly from the side close to the neck portion to the side away from the neck portion.

[0019] In some embodiments, the main groove cavity and the head portion are mutually adapted trapezoidal, inverted trapezoidal, mushroom head-shaped, heart-shaped, square or triangular.

[0020] In some embodiments, the outer side of the clamping portion has a hook;

[0021] When the hook is opposite to the limiting portion, the limiting portion is located outside the hook to limit the moving distance of the hook to both sides of the separation head;

[0022] When the overall transmission structure moves in the first direction to the hook opposite to the locking window, the abutment head can push the hook to move to both sides of the separation head, and the hook is clamped into the locking window.

[0023] In some embodiments, when the hook is engaged with the locking window, the hook surface forms a self-locking angle, so that in the axial direction of the sleeve, the outer end of the hook surface is closer to the clamping piece than the inner end of the hook surface.

[0024] In some embodiments, the self-locking angle is 3°-7°.

[0025] In some embodiments, the separation head and the pull rod are connected by at least one connecting rib to form the overall transmission structure.

[0026] In some embodiments, the separation head includes a top portion and two clamping portions arranged on both sides of the top portion, and a gap is left between the clamping portions; the top portion and the clamping portions surround the abutment groove.

[0027] In some embodiments, at least one connecting rib is arranged between the abutment head and the top portion to connect the separation head and the abutment head to form the overall transmission structure.

[0028] In some embodiments, the abutment head has a neck portion, and at least one connecting rib is arranged between the neck portion and the clamping portion to connect the separation head and the abutment head to form the overall transmission structure.

[0029] In some embodiments, the connecting rib between the neck portion and the clamping portion is arranged in the transverse direction.

[0030] In some embodiments, the pull rod and the separation head are an integrally formed overall transmission structure, or the pull rod and the separation head are fixedly connected to form an overall transmission structure.

[0031] In some embodiments, the integrally formed overall transmission structure is cut from the same base material by a laser cutting process.

[0032] In some embodiments, the pull rod and the separation head are arranged separately, and the abutment head is limited by the abutment groove to form the overall transmission structure.

[0033] In some embodiments, the clamping portion is made of plastic deformation material, and when the whole transmission structure moves in the first direction to the position where the clamping portion is opposite to the locking window, the abutting head can push the clamping portion to deform plastically to the two sides of the separating head.

[0034] In some embodiments, the clamping portion is movably connected to the other part of the separating head, and when the whole transmission structure moves in the first direction to the position where the clamping portion is opposite to the locking window, the abutting head can push the clamping portion to move to the two sides of the separating head.

[0035] In some embodiments of the present application, a transmission member of an insertion type tissue clamping device is provided for one of the above purposes, comprising:

[0036] a pull rod, which is used to be connected with a control handle;

[0037] a separating head, which is used to be connected with a clamping member, and is used to transmit the movement of the pull rod to the clamping member;

[0038] the separating head and the pull rod form a whole transmission structure which can be separated from each other, the separating head has an abutting groove and a clamping portion which is a side groove wall of the abutting groove and can move to the two sides of the abutting groove, and the clamping portion has a hook; the pull rod has an abutting head which is inserted into the abutting groove;

[0039] during the movement of the pull rod, the abutting head can push the clamping portion to move to the two sides of the separating head, so that the hook can be engaged with and locked by a sleeve of the insertion type tissue clamping device, and the abutting head can be separated from the abutting groove.

[0040] According to the transmission member provided by the above embodiments, the abutting head of the pull rod is inserted into the abutting groove, and the clamping portion is a side groove wall of the abutting groove and can move to the two sides of the abutting groove. When the transmission member is applied to the sleeve of the insertion type tissue clamping device, the transmission member can form a limiting structure with a limiting portion on the sleeve, and then only when the clamping member completes the clamping operation and the clamping portion is opposite to the locking window, the abutting head can be separated from the abutting groove, and then the whole transmission structure between the pull rod and the separating head is released, so that the clamping operation on larger or harder tissues can be realized. Moreover, the clamping portion has a hook, and the hook can be engaged with and locked by the sleeve of the insertion type tissue clamping device when the clamping portion moves to the two sides of the separating head, so that the clamping member can be kept in a locked state. After the plastic deformation clamping portion is locked to the corresponding locking window, it will not be reset and rebound, and it can ensure that the clamping member is always in a reliable clamping state.

[0041] In some embodiments, the interface slot has a main slot cavity and a separation slot communicating with the main slot cavity, the interface head has a head portion and a neck portion, the head portion is arranged in the main slot cavity, and the neck portion is arranged in the separation slot.

[0042] During the movement of the pull rod, the head portion can push the clamping portions to move to both sides of the separation head to expand the width of the separation slot, so that the head portion is separated from the separation slot.

[0043] In some embodiments, the side wall of the head portion has a guide surface, which is arranged to incline outwardly from the neck portion along the direction from the side close to the neck portion to the side away from the neck portion.

[0044] In some embodiments, the main slot cavity and the head portion are mutually adapted trapezoidal, inverted trapezoidal, mushroom head-shaped, heart-shaped, square or triangular.

[0045] In some embodiments, the hook surface of the clamping portion forms a self-locking angle after the pull rod is separated from the separation head.

[0046] In some embodiments, the self-locking angle is 3°-7°.

[0047] In some embodiments, the separation head and the pull rod are connected by at least one connecting rib to form the integral transmission structure.

[0048] In some embodiments, the separation head includes a top portion and two clamping portions arranged on both sides of the top portion, and a gap is left between the clamping portions; the top portion and the clamping portions enclose the interface slot.

[0049] In some embodiments, at least one connecting rib is arranged between the interface head and the top portion to connect the separation head and the interface head to form the integral transmission structure.

[0050] In some embodiments, the interface head has a neck portion, and at least one connecting rib is arranged between the neck portion and the clamping portion to connect the separation head and the interface head to form the integral transmission structure.

[0051] In some embodiments, the pull rod and the separation head are an integral transmission structure formed by one piece; the integral transmission structure is cut from the same base material by a laser cutting process;

[0052] Or, the pull rod and the separation head are fixedly connected to form an integral transmission structure.

[0053] In some embodiments, the clamping portion is made of a plastic deformation material, and during the movement of the pull rod, the interface head can push the clamping portion to plastically deform to both sides of the separation head.

[0054] In some embodiments, the clamping portion is movably connected to other parts of the separation head, and the abutment head can push the clamping portion to move to both sides of the separation head during the movement of the pull rod. BRIEF DESCRIPTION OF DRAWINGS

[0055] Fig. 1 is a schematic view of the appearance structure of an insertion type tissue clamping device in an embodiment of the present application, in which the clamping member is in a fully closed state;

[0056] Fig. 2 is an exploded schematic view of the insertion type tissue clamping device in an embodiment of the present application;

[0057] Fig. 3 is a schematic view of the structure of a transmission member in an embodiment of the present application;

[0058] Fig. 4 is a longitudinal sectional view of the insertion type tissue clamping device in an embodiment of the present application, in which the clamping portion is in a state of being opposite to the limiting portion of the sleeve;

[0059] Fig. 5 is a longitudinal sectional view of the insertion type tissue clamping device in an embodiment of the present application, in which the abutment head pushes the clamping portion to move into the locking window;

[0060] Fig. 6 is a longitudinal sectional view of the insertion type tissue clamping device in an embodiment of the present application, in which the clamping portion is locked with the locking window, and the pull rod is completely separated from the separation head;

[0061] Figs. 7-12 are schematic views of the shapes of the separation head and the pull rod in different embodiments;

[0062] Fig. 13 is an exploded schematic view of the relationship among the rocker arm, the sliding block and the transmission member in an embodiment of the present application;

[0063] Fig. 14 is a partial enlarged sectional view of the cooperation structure of the separation body and the pull rod in an embodiment of the present application, in which the abutment head of the pull rod is limited in the abutment groove of the separation body;

[0064] Fig. 15 is a partial enlarged sectional view of the cooperation structure of the separation body and the pull rod in an embodiment of the present application, in which the abutment head pushes the clamping portion of the separation body to plastically deform; DETAILED DESCRIPTION

[0065] The application will be described in further detail below with specific reference to the drawings. Like elements in different embodiments are denoted by like reference numerals. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, it will be apparent to one skilled in the art that the application can be practiced without the specific details given herein. In other instances, well-known methods have not been described in detail in order not to unnecessarily obscure the application. Embodiments of the application will also be described as they can be implemented in the context of particular apparatus and methods. The application can be implemented in the context of other apparatus and methods and / or in other contexts. Changes can be made in the context of some embodiments without departing from the true spirit and scope of the application. Where considered useful to clarify the description, reference numerals have been repeated among the figures to indicate like components.

[0066] In addition, features, operations, or steps described in the specification can be combined in any suitable manner without departing from the scope of the application. Similarly, steps in the methods described do not have to be performed in the precise order described, unless otherwise specified. Thus, the steps of the methods described can be performed in any order that is appropriate or desirable, unless otherwise specified.

[0067] In this document, relational terms such as first, second, and the like can be used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional elements of the same type in the process, method, article, or apparatus. The terms "coupled" and "connected," along with derivatives thereof, can be used to express the relationship between or among such coupled or connected items and / or the connection between it and the associated items.

[0068] The application provides an insertion-type tissue clipping device (hereinafter referred to as a clipping device for convenience of description) for clipping tissue in a human or animal (collectively referred to as a target object) to achieve hemostasis or closure, which can include but is not limited to a hemostatic clip, a tissue clip, etc. The clipping device can be a disposable instrument or a reusable instrument.

[0069] Referring to FIGS. 1-3, in some embodiments, the clipping device 1 includes a clamping member 100, a sleeve 200, and a transmission member 300. Of course, the clipping device 1 can also include other components, such as a control handle, etc., according to needs, and these structures can be referred to the prior art.

[0070] The clamping member 100 is used to clamp and release the tissue in the target object under the control of the operator, for example, the operator can control the action of the clamping member 100 through the control handle and the like. The number of the clamping member 100 can be more than one, and the clamping member 100 and the sleeve 200 can adopt various structures capable of clamping and releasing the tissue under the driving of the transmission member 300. For example, in the embodiment shown in FIGS. 1 and 2, the sleeve 200 and the clamping member 100 are integrally formed, and the clamping member 100 is provided with a plurality of slits 110. Through the deformation of the slits 110, the clamping member 100 can bend inwardly or outwardly, thereby realizing the clamping and opening actions. Of course, in other embodiments, the sleeve 200 can also be a separate structure from the clamping member 100. The clamping member 100 can be arranged in the sleeve 200 and can be extended out of the sleeve 200 or retracted into the sleeve 200, thereby realizing the clamping and opening actions. The cooperation structure of the clamping member 100 and the sleeve 200 can refer to the existing structure, which will not be described here.

[0071] Please refer to FIGS. 2 and 3. In some embodiments, the transmission member 300 has a separation head 310 and a pull rod 320. The separation head 310 and the pull rod 320 form an integral transmission structure capable of being separated from each other. The integral transmission structure means that the separation head 310 and the pull rod 320 can transmit force and motion and can move together as a whole at least in a certain stroke. The separation head 310 and the pull rod 320 can be integrally formed, fixedly connected, or separated from each other, as long as they can form a structure capable of transmitting force and motion. At the same time, the integral transmission structure can also separate the separation head 310 and the pull rod 320 from each other under a set condition, thereby realizing the disengagement between the pull rod 320 and the clamping member 100, and leaving the clamping member 100 and the separation head 310 in the target object.

[0072] Please refer to FIG. 4. The integral transmission structure is movably arranged relative to the sleeve 200. The movement direction of the integral transmission structure relative to the sleeve 200 includes a first direction a1 and a second direction a2. When the integral transmission structure moves in the first direction a1, the clamping member 100 is clamped. When the integral transmission structure moves in the second direction a2, the clamping member 100 is opened.

[0073] Specifically, the pull rod 320 is used to connect with the control handle, which can be achieved by various connection structures in the prior art, i.e. structures capable of transmitting the movement and force input by the control handle to the pull rod 320. For example, referring to FIGS. 1 and 2, in some embodiments, the end of the pull rod 320 away from the separation head 310 is connected with the control handle through a connecting pipe 410. The end of the sleeve 200 away from the clamping member 100 can also be provided with a rotating sleeve 420 and an unhooking elastic member 430, the rotating sleeve 420 is installed on the sleeve 200 through the unhooking elastic member 430, and the pull rod 320 penetrates into the rotating sleeve 420 and the sleeve 200.

[0074] Referring to FIG. 4, the separation head 310 extends into the sleeve 200 and is connected with the clamping member 100. The connection between the separation head 310 and the clamping member 100 can be direct connection or indirect connection, the purpose of which is to drive the clamping and opening of the clamping member 100 through the movement of the separation head 310. For example, referring to FIGS. 2 and 4, in some embodiments, the clamping device 1 further comprises a pair of rocker arms 510, a sliding block 520 and a rocker arm pivot shaft 530, the separation head 310 is connected with the sliding block 520, which can be fixed connection or other structure capable of driving the sliding block 520 to move along the sleeve 200 axially with the separation head 310. Specifically, in some embodiments, referring to FIGS. 4 and 13, the sliding block 520 can be divided into a first sliding block 521 and a second sliding block 522, which are separately processed and can be assembled into a whole sliding block 520. As shown in FIG. 13, in this embodiment, the first sliding block 521 and the second sliding block 522 respectively have cavities 523 (only the cavity 523 on the first sliding block 521 is shown in FIG. 13, the second sliding block 522 also has a cavity 523 which is also adapted), after the first sliding block 521 and the second sliding block 522 are assembled into the sliding block 520, a fitting cavity 524 (as shown in FIG. 4) is formed, and the separation head 310 can be fixedly installed in the fitting cavity 524 to realize the fixed connection of the separation head 310 and the sliding block 520. Of course, in other embodiments, the separation head 310 and the sliding block 520 can also be connected in other ways.

[0075] The pair of rocker arms 510 are respectively connected with the pair of clamping pieces 100 one by one, that is, one rocker arm 510 is connected with one clamping piece 100. The rocker arm 510 is simultaneously rotationally connected with the sliding block 520, and the movement of the transmission member 300 and the sliding block along the sleeve 200 in the axial direction can be divided into a first direction a1 and a second direction a2 (as shown in FIG. 4). When the transmission member 300 and the sliding block move in the first direction a1, the pair of rocker arms 510 can drive the pair of clamping pieces 100 to move close to each other to form a clamping action. When the transmission member 300 and the sliding block 520 move in the second direction a2, the pair of rocker arms 510 can drive the pair of clamping pieces 100 to move away from each other to realize an opening action. Of course, this embodiment only shows one way in which the separation head 310 is used to drive the clamping piece 100 to clamp and open. In other embodiments, the separation head 310 can also be connected with the clamping piece 100 through other structures to achieve the purpose of driving the clamping piece 100 to clamp and open, such as the transmission structure of various transmission members (some existing technologies refer to them as unhooking pieces or other names) and clamping pieces 100.

[0076] Please refer to FIGS. 1-4. In some embodiments, the barrel of the sleeve 200 has a limiting portion 210 and a locking window 220 distributed in sequence in the direction away from the clamping piece 100. The separation head 310 has a butt joint groove 311 and a pair of clamping portions 312 which are side groove walls of the butt joint groove 311 and can move to both sides of the butt joint groove 311. The pull rod 320 has a butt joint 321 which is inserted into the butt joint groove 311. The clamping portion 312 is a side groove wall of the butt joint groove 311, which encloses part of the space of the butt joint groove 311. The clamping portion 312 can also limit the butt joint 321 to prevent the butt joint 321 from being separated from the butt joint groove 311 in an unexpected situation, such as the embodiment shown in FIG. 4, under the limitation of external structure or under the action of force exerted on the butt joint 321 which exceeds the material strength of the clamping portion 312. Moreover, the clamping portion 312 can move to both sides of the butt joint groove 311 to release the butt joint 321, such as the embodiments shown in FIGS. 5 and 6, when the external structure limitation is removed or when the butt joint 321 exerts a force on the clamping portion 312 which exceeds the material strength of the clamping portion 312. The movement of the clamping portion 312 to both sides of the butt joint groove 311 includes but is not limited to at least one of the following ways:

[0077] In some embodiments, the clamping portion 312 is made of a plastic deformation material (e.g., a plastic metal material (stainless steel 304 / 316 or other plastic metal), and other plastic deformation materials, etc.), which can be pushed by the abutting joint 321 to deform plastically to the two sides of the separation head 310 when the whole transmission structure moves in the first direction a1 to the position where the clamping portion 312 is opposite to the locking window 220. After the plastic deformation clamping portion 312 is locked to the locking window 220, it will not rebound, which can ensure that the clamping piece 100 is always in a reliable clamping state.

[0078] Please refer to FIGS. 14 and 15. In some embodiments where the clamping portion 312 is made of a plastic deformation material, in order to better control the plastic deformation of the clamping portion 312 to better follow the expectation, the clamping portion 312 can have a bending portion 3123, so that when the abutting joint 321 pushes the clamping portion 312 to deform plastically to the two sides of the separation head 310, the clamping portion 312 mainly bends and deforms at the bending portion 3123 to move to the two sides of the separation head 310.

[0079] Further, please refer to FIGS. 14 and 15. In some embodiments, in the axial direction of the sleeve 200, the transverse width of the bending portion 3123 on the clamping portion 312 is smaller than that of other regions, so as to ensure that the plastic deformation of the clamping portion 312 is mainly concentrated at the bending portion 3123, so that the bending portion 3123 deforms preferentially. Moreover, the transverse width of other regions (e.g., the position of the clamping hook 3121) is greater than that of the bending portion 3123, which can also ensure that when the abutting joint 321 pushes the clamping portion 312, it will not cause too much plastic deformation of other regions, which will affect the locking effect of the clamping portion 312 and the locking window 220.

[0080] In order to realize that when the abutting joint 321 pushes the clamping portion 312, the deformation of the clamping portion 312 is concentrated at the root of the clamping portion 312, in some embodiments, please refer to FIGS. 14 and 15, the bending portion 3123 is located at the connection between the clamping portion 312 and the top portion 313. Of course, the bending portion 3123 can also be arranged at other positions of the clamping portion 312.

[0081] In other embodiments, the clamping portion 312 is movably connected (e.g., rotationally connected) to other parts of the separation head 310 (e.g., the top portion 313 of the separation head 310 mentioned later), and when the whole transmission structure moves in the first direction a1 to the position where the clamping portion 312 is opposite to the locking window 220, the abutting joint 321 can push the clamping portion 312 to move to the two sides of the separation head 310.

[0082] In addition, the clamping portion 312 can also be realized in other ways to move to the two sides of the abutting slot 311.

[0083] Please refer to FIG. 4, in some embodiments, when the abutting part 312 in the sleeve 200 is opposite to the limiting part 210 (for example, in the normal state, during the process of the transmission member 300 driving the clamping member 100 to open, and when the transmission member 300 drives the clamping member 100 to clamp but not reach the set clamping position), at this time, the limiting part 210 is located outside the abutting part 312, which is used to limit the movement distance of the abutting part 312 to both sides of the separation head 310, at this time, the abutting part 312 cannot move outward or can only move a certain distance, which is not enough to cause the disengagement of the butt joint head 321 and the butt joint groove 311. At this time, since the abutting part 312 cannot move outward, the abutting part 312 limits the butt joint head 321 to prevent the butt joint head 321 from disengaging from the butt joint groove 311.

[0084] Please refer to FIG. 5, in some embodiments, when the overall transmission structure moves along the first direction a1, it can drive the clamping member 100 to clamp. When the overall transmission structure moves along the first direction a1 to the position where the abutting part 312 is opposite to the locking window 220, at this time, the clamping member 100 has been clamped to the position desired by the operator, that is, the clamping effect is achieved. At this time, since the limiting effect of the limiting part 210 on the abutting part 312 is lost, the butt joint head 321 can push the abutting part 312 to move to both sides of the separation head 310 to release the limiting of the abutting part 312 on the butt joint head 321, so that the butt joint head 321 can disengage from the butt joint groove 311, the overall transmission structure effect between the separation head 310 and the pull rod 320 is released, and the pull rod 320 and the separation head 310 are separated. At the same time, the abutting part 312 can be clamped into the locking window 220 to form the locking of the clamping member 100 during the movement to the outside. After the pull rod 320 is separated from the separation head 310, it continues to move along the first direction a1 and contacts the unhooking elastic member 430, under the pulling force, the pull rod 320 drives the unhooking elastic member 430 and the rotating sleeve 420 to separate from the sleeve 200 together, and they are taken out from the target object together.

[0085] In the clamping device 1 provided by the above embodiment, the effect of removing the overall transmission structure between the separation head 310 and the pull rod 320 is not only affected by the size of the pulling force on the pull rod 320, but also affected by the positional relationship between the clamping portion 312 and the limiting portion 210 on the sleeve 200. When the clamping member 100 clamps a larger tissue or a harder tissue, the operator can apply a greater force to the clamping member 100 through the transmission member 300 to control the clamping member 100 to clamp the larger tissue or the harder tissue more forcefully. The position of the clamping portion 312 in the sleeve 200 is related to the clamping degree of the clamping member 100. Before the clamping member 100 completes the desired clamping effect, the clamping portion 312 is always opposite to the limiting portion 210 and cannot move to the locking window 220. At this time, even if a greater force is applied to the transmission member 300, the limiting portion 210 limits the clamping portion 312, so that the clamping portion 312 is always in a state of preventing the abutment head 321 from being separated from the abutment groove 311, and the overall transmission structure between the pull rod 320 and the separation head 310 is always maintained. The pull rod 320 can drive the separation head 310 to continue to move to the position of the locking window 220 until the desired clamping effect is completed. At this time, the clamping portion 312 also moves to the locking window 220, and the abutment head 321 can push the clamping portion 312 to move to both sides of the separation head 310 to release the limiting of the clamping portion 312 to the abutment head 321, so that the abutment head 321 can be separated from the abutment groove 311, and the clamping portion 312 can also be clamped into the locking window 220 to lock the clamping member 100 in the clamping state.

[0086] Further, referring to FIGS. 3 and 4, in some embodiments, in order to form the overall transmission structure between the separation head 310 and the pull rod 320, the abutment groove 311 has a main groove cavity 3111 and a separation groove 3112 communicating with the main groove cavity 3111, and the abutment head 321 has a head portion 3211 and a neck portion 3212, the head portion 3211 is arranged in the main groove cavity 3111, and the neck portion 3212 is arranged in the separation groove 3112. When the clamping portion 312 is opposite to the limiting portion 210, the cavity wall of the separation groove 3112 limits the head portion 3211 to prevent the head portion 3211 from being separated from the separation groove 3112, so that the separation head 310 and the pull rod 320 maintain the overall transmission structure. Referring to FIGS. 5 and 6, when the overall transmission structure moves to the position where the clamping portion 312 is opposite to the locking window 220 along the first direction a1, the head portion 3211 can push the clamping portion 312 to move to both sides of the separation head 310 to expand the width of the separation groove 3112, so that the head portion 3211 is separated from the separation groove 3112.

[0087] Please refer to FIG. 3 and FIG. 4, in some embodiments, the lateral width of the head portion 3211 is larger than the lateral width of the disengagement groove 3112, so as to ensure that the head portion 3211 cannot be disengaged from the disengagement groove 3112 until the disengagement groove 3112 is expanded in width. The lateral width of the neck portion 3212 is smaller than the lateral width of the disengagement groove 3112, so as to be able to be accommodated in the disengagement groove 3112. The main groove cavity 3111 has a space size capable of accommodating the head portion 3211, and of course, in some embodiments, the shape of the main groove cavity 3111 can match the shape of the head portion 3211, so that the two can be as close as possible to prevent the head portion 3211 from generating excessive shaking in the main groove cavity 3111 and affecting the operation. The lateral width in the present embodiment refers to the width of each component in the direction perpendicular to the axial direction of the sleeve 200 on the cross section passing through the locking window 220 and the axis of the sleeve 200 (i.e. the size in the left-right direction shown in FIG. 4 is the lateral width). The lateral width can of course be defined as other names.

[0088] Please refer to FIG. 5, in some embodiments, in order to more smoothly push the clamping portion 312 to move when the docking head 321 is disengaged from the docking groove 311, the side wall of the head portion 3211 has a guide surface 3213, which is inclined outwardly from the side close to the neck portion 3212 to the side away from the neck portion 3212. When the pull rod 320 moves in the first direction a1, the clamping portion 312 can gradually move or deform outwardly along the guide direction of the guide surface 3213, thereby increasing the width of the disengagement groove 3112.

[0089] Of course, in other embodiments, the guide surface 3213 can also be designed as other shapes with a guiding effect, or no guide surface 3213 is provided.

[0090] Further, under the premise of ensuring that the clamping portion 312 can limit the docking head 321 to prevent the docking head 321 from being disengaged from the docking groove 311 at an unexpected time, and ensuring that the docking head 321 can move with the clamping portion 312 driven by the pull rod 320 when the clamping portion 312 is opposite to the locking window 220, the main groove cavity 3111 and the head portion 3211 can be designed as any feasible shape.

[0091] For example, in some embodiments, the main groove cavity 3111 and the head 3211 are shaped as a trapezoid, an inverted trapezoid, a mushroom head, a heart shape, a square, a triangle or other shapes. Please refer to FIGS. 4-6 and FIGS. 7-10, in some embodiments, the head 3211 is designed as a heart shape. Please refer to FIG. 11, in some embodiments, the head 3211 is designed as an inverted trapezoid. Please refer to FIG. 12, in some embodiments, the head 3211 is designed as a mushroom head. Please refer to FIGS. 4-6 and FIGS. 11, 12, in some embodiments, the main groove cavity 3111 is designed as an inverted trapezoid. Please refer to FIGS. 7 and 8, in some embodiments, the main groove cavity 3111 is designed as a square with rounded corners. Please refer to FIGS. 9 and 10, in some embodiments, the main groove cavity 3111 is designed as a heart shape.

[0092] Of course, in some embodiments, the main groove cavity 3111 and the head 3211 are shaped to match each other, such as in the embodiments shown in FIGS. 9-11. When the main groove cavity 3111 and the head 3211 are shaped to match each other, the movement of the pull rod 320 can drive the separation head 310 to move more synchronously even if the pull rod 320 and the separation head 310 are not integrally formed or fixedly connected.

[0093] Further, when forming the integral transmission structure, the pull rod 320 and the separation head 310 can be integrally formed, fixedly connected, or separated from each other but able to move together due to structural constraints.

[0094] Please refer to FIG. 3 and FIGS. 7-12, in some embodiments, the separation head 310 and the pull rod 320 are connected as an integral transmission structure by at least one connecting rib 301, 302. The connecting rib 301, 302 is used to connect the separation head 310 and the pull rod 320 as a whole, which can be an integrally formed whole or a whole formed by fixed connection. When the separation head 310 and the pull rod 320 are connected as a whole by the connecting rib 301, 302, the movement of the pull rod 320 and the separation head 310 can be reduced, and displacement between the pull rod 320 and the separation head 310 during installation and operation of the clamping piece 100 can be avoided. The connecting rib 301, 302 can be arranged between any part of the separation head 310 and the pull rod 320, and the connecting rib 301, 302 is designed to be torn by external force applied by the operator when the pull rod 320 moves in the first direction a1, so as to ensure that the separation head 310 and the pull rod 320 can be separated by tearing the connecting rib 301, 302 after the clamping piece 100 completes the clamping operation.

[0095] Please refer to FIG. 3 and FIG. 7-12, in some embodiments, the separation head 310 includes a top portion 313 and two clamping portions 312 arranged on both sides of the top portion 313, and a gap is left between the clamping portions 312 to form a separation groove 3112. The top portion 313 and the clamping portions 312 enclose the docking groove 311 shown in the above embodiments. In some embodiments, at least one connecting rib 301 is arranged between the docking head 321 and the top portion 313 of the separation head 310 to connect the separation head 310 and the docking head 321 as an integral transmission structure. By arranging the connecting rib 301 between the docking head 321 and the top portion 313 of the separation head 310, the docking head 321 and the separation head 310 can be better aligned in the axial direction of the sleeve 200.

[0096] Please refer to FIG. 3 and FIG. 7-8, in some embodiments, at least one connecting rib 302 is arranged between the neck portion 3212 of the docking head 321 and the clamping portion 312 to connect the separation head 310 and the docking head 321 as an integral transmission structure. By arranging the connecting rib 302 between the neck portion 3212 and the clamping portion 312, the position of the separation head 310 and the pull rod 320 in the transverse direction is stable, and the transmission and displacement are reduced. In FIG. 3 and FIG. 7-8, a connecting rib 302 is arranged between each clamping portion 312 and the neck portion 3212 to ensure the stable position of the clamping portion 312 and the neck portion 3212. Moreover, in the structure with the connecting rib 302, the connecting rib 302 can increase the release force, and when the pull rod 320 is pulled to break the connecting rib 302, not only the breaking sound can be emitted, but also the obvious breaking feeling can be provided to prompt the operator to separate the pull rod 320 and the separation head 310. Of course, in other embodiments, the connecting rib 302 can be arranged between the clamping portion 312 and other positions of the pull rod 320 except the neck portion 3212, such as the embodiment shown in FIG. 9, in which the connecting rib 302 is arranged at the shoulder portion 322 of the pull rod 320, which is below the neck portion 3212.

[0097] Please refer to FIG. 3 and FIG. 7-9, in some embodiments, at least one connecting rib 301 is arranged between the docking head 321 and the top portion 313 of the separation head 310, and at least one connecting rib 302 is arranged between the docking head 321 and the clamping portion 312, by arranging the connecting ribs 301, 302 at least at two different positions in the axial direction of the pull rod 320, a secondary separation structure is formed under the condition of reliable connection between the pull rod 320 and the separation head 310. The release feeling generated in this structure is clear, and the force value is stable.

[0098] Specifically, referring to FIGS. 3 and 4, when the transmission member 300 moves in the first direction a1 within the sleeve 200, the pull rod 320 is pulled by the separating head 310, and when the connecting rib 301 between the abutting head 321 and the top 313 of the separating head 310 reaches the yield limit, the connecting rib 301 breaks (at this time, the state is referred to as the first separation), and at the same time, the abutting head 321 continues to move downward while pressing the clamping portion 312. If the separating head 310 is still within the sleeve 200 at this time and has not reached the locking window 220, the clamping portion 312 is constrained by the limiting portion 210 of the sleeve 200, so that it cannot be deformed. When the connecting rib 302 between the clamping portion 312 and the pull rod 320 reaches the yield limit, the connecting rib 302 breaks, and the abutting head 321 moves downward, at which time the clamping portion 312 is pressed by the abutting head 321 to change its position (at this time, the state is referred to as the second separation), and at this time, the clamping portion 312 is located at the locking window 220, and when the abutting head 321 is separated, the clamping portion 312 changes its position by the maximum distance and is no longer constrained by the sleeve 200, and is engaged with the locking window 220 to be fixed.

[0099] Of course, in other embodiments, the connecting rib 301 between the abutting head 321 and the top 313 of the separating head 310 and the connecting rib 302 between the abutting head 321 and the clamping portion 312 can also be used alternatively, for example, in the embodiment shown in FIGS. 10-12, only the connecting rib 301 between the abutting head 321 and the top 313 of the separating head 310.

[0100] Further, referring to FIGS. 3 and 7, in some embodiments, the connecting rib 302 between the neck portion 3212 and the clamping portion 312 is arranged in the transverse direction. The extending direction of the connecting rib 302 is perpendicular to the first direction a1 or at a certain angle, and when the pull rod 320 moves in the first direction a1, the connecting rib 302 can be torn more easily, which is more convenient for the operator to operate.

[0101] Further, referring to FIG. 2, in some embodiments, the integrally formed overall transmission structure is cut from the same base material by a laser cutting process. The integrally formed overall transmission structure is that the pull rod 320 and the separating head 310 (or the entire transmission member 300) are integrally machined from the same material, rather than being assembled by two or more parts. The integrally formed overall transmission structure can be made by, but not limited to, injection molding, laser cutting, and other mechanical processing processes. Especially, when laser cutting is used, extremely small gaps can be machined, which is beneficial to the miniaturization and improvement of the compactness of the overall structure. Especially, when the connecting rib is arranged between the pull rod 320 and the separating head 310, a small amount of material can be reserved during laser cutting to form the connecting rib, which is very simple and convenient to process. In addition, the pull rod 320 and the separating head 310 can also be fixed as a whole by clamping, welding, bonding, screw locking, riveting, etc.

[0102] In addition, in some embodiments, the pull rod 320 and the separation head 310 can also be arranged separately without a direct connection relationship, but through mutual limiting of the docking groove 311 and the docking head 321 to form an integral transmission structure. When the docking groove 311 and the docking head 321 form limiting in the first direction a1 and the second direction a2, the movement of the pull rod 320 along the first direction a1 and the second direction a2 can also drive the separation head 310 to move along the first direction a1 and the second direction a2. Specifically, on the basis of the embodiment shown in FIGS. 9-10, the connecting rib 301 can be omitted, and the mutual limiting between the docking groove 311 and the docking head 321 is relied on, so as to realize the movement of the pull rod 320 and the separation head 310 along the first direction a1 and the second direction a2.

[0103] Further, referring to FIG. 6, in some embodiments, in order to enable the clamping portion 312 to be better locked with the locking window 220, the outer side of the clamping portion 312 has a hook 3121. When the hook 3121 is opposite to the limiting portion 210, the limiting portion 210 is located at the outer side of the hook 3121, so as to limit the moving distance of the hook 3121 to the two sides of the separation head 310. When the integral transmission structure moves along the first direction a1 to the hook 3121 opposite to the locking window 220, the docking head 321 can push the hook 3121 to move to the two sides of the separation head 310, and the hook 3121 is clamped into the locking window 220.

[0104] Further, referring to FIG. 6, in some embodiments, when the hook 3121 is engaged with the locking window 220, the hook surface 3122 of the hook 3121 forms a self-locking angle A, so that in the axial direction of the sleeve 200, the outer end of the hook surface 3122 is closer to the clamping member 100 than the inner end of the hook surface 3122. The self-locking angle A can enhance the locking force when the outer end of the hook 3121 is engaged with the locking window 220, and realize a more firm self-locking effect. In some embodiments, the self-locking angle A is 3°-7° (including both end values), for example, it can be 4°-6° (including both end values).

[0105] The above application of specific examples is used to illustrate the present application, which is only used to help understand the present application, and does not limit the present application. For those skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. An insertable tissue clamping device, characterized in that: include: a clamping member for clamping and releasing tissue within a target subject; A sleeve, wherein the sleeve body has a limiting portion and a locking window sequentially distributed in a direction away from the clamping member; and a transmission member, the transmission member having a separation head and a pull rod, the pull rod being used to connect with the control handle, the separation head extending into the sleeve and connected with the clamping member, the separation head and the pull rod forming an integral transmission structure that can be separated from each other; the integral transmission structure is movably arranged relative to the sleeve, and the movement direction of the integral transmission structure relative to the sleeve includes a first direction and a second direction, when the integral transmission structure moves along the first direction, the clamping member is driven to clamp; when the integral transmission structure moves along the second direction, the clamping member is driven to open; The separation head has a docking groove and a clamping portion that serves as a side groove wall of the docking groove and can move toward both sides of the docking groove, and the clamping portion is made of a material that can produce plastic deformation; the pull rod has a docking head, and the docking head is inserted into the docking groove; When the clamping portion is opposite to the limiting portion, the limiting portion is located outside the clamping portion to limit the movement distance of the clamping portion toward both sides of the separation head. The clamping portion limits the butt joint to prevent the butt joint from being separated from the butt joint groove. When the overall transmission structure moves along the first direction until the clamping portion is opposite to the locking window, the docking head can push the clamping portion to plastically deform toward both sides of the separation head to release the limitation of the clamping portion on the docking head, so that the docking head can be disengaged from the docking groove and the clamping portion can be stuck in the locking window.

2. The insertable tissue clipping device according to claim 1, wherein: The docking groove has a main groove cavity and a disengagement groove communicated with the main groove cavity, and the docking head has a head and a neck, the head is placed in the main groove cavity, and the neck is placed in the disengagement groove; When the clamping portion is opposite to the limiting portion, under the restriction of the limiting portion, the cavity wall of the separation groove forms a limit on the head to prevent the head from separating from the separation groove, so that the separation head and the pull rod maintain an integral transmission structure; When the overall transmission structure moves along the first direction until the clamping portion is opposite to the locking window, the head can push the clamping portion to move toward both sides of the separation head to expand the width of the disengagement slot and disengage the head from the disengagement slot.

3. The insertable tissue clipping device according to claim 2, wherein: The side wall of the head has a guide surface, and the guide surface is inclined toward the outside of the head along a direction from a side close to the neck to a side away from the neck.

4. The insertable tissue clipping device according to any one of claims 1 to 3, wherein: The outer side of the clamping portion is provided with a hook; When the hook is opposite to the limiting portion, the limiting portion is located outside the hook to limit the moving distance of the hook toward both sides of the separation head; When the integral transmission structure moves along the first direction until the hook is opposite to the locking window, the docking head can push the hook to move toward both sides of the separation head, and the hook is locked into the locking window.

5. The insertable tissue clipping device according to claim 4, wherein: When the hook is hooked with the locking window, the hook surface of the hook forms a self-locking angle, so that in the axial direction of the sleeve, the outer end of the hook surface is closer to the clamping member than the inner end of the hook surface.

6. The insertable tissue clipping device according to any one of claims 1 to 5, wherein: The separation head and the pull rod are connected to form the integral transmission structure via at least one connecting rib.

7. The insertable tissue clipping device according to any one of claims 1 to 6, wherein: The separation head includes a top and two clamping parts respectively arranged on both sides of the top, with a gap left between the clamping parts; the top and the clamping parts form the docking groove.

8. The insertable tissue clipping device according to claim 7, wherein: At least one connecting rib is provided between the butt joint and the top portion to connect the separation head and the butt joint to form the integral transmission structure.

9. The insertable tissue clipping device according to claim 7 or 8, wherein: The butt joint has a neck portion, and at least one connecting rib is provided between the neck portion and the clamping portion to connect the separation head and the butt joint to form the integral transmission structure.

10. The insertable tissue clipping device according to any one of claims 1 to 9, wherein: The pull rod and the separation head are an integral transmission structure formed in one piece, or the pull rod and the separation head are an integral transmission structure fixedly connected.

11. The insertable tissue clipping device according to claim 10, wherein: The integrally formed overall transmission structure is cut on the same base material using a laser cutting process.

12. The insertable tissue clipping device according to any one of claims 1 to 5, wherein: The pull rod is separately arranged from the separation head, and the butting head is limited by the butting groove to form the overall transmission structure.

13. A transmission member of an insertable tissue clamping device, characterized in that: include: A pull rod, the pull rod being used to connect with the control handle; and a separation head, the separation head being adapted to be connected to the clamping member so as to transmit the movement of the pull rod to the clamping member; The separation head and the pull rod form an integral transmission structure that can be separated from each other. The separation head has a docking groove and a clamping portion that serves as a side groove wall of the docking groove and can move to both sides of the docking groove. The clamping portion is made of a material that can produce plastic deformation. The pull rod has a docking head that is inserted into the docking groove. During the movement of the pull rod, the docking joint can push the clamping part to plastically deform toward both sides of the separation head, thereby releasing the limit of the clamping part on the docking joint, so that the docking joint can be detached from the docking groove; the clamping part has a hook, which is used to hook and lock with the sleeve of the insertable tissue clamping device when the clamping part moves toward both sides of the separation head.

14. The transmission member according to claim 13, wherein: The docking groove has a main groove cavity and a disengagement groove communicated with the main groove cavity, and the docking head has a head and a neck, the head is placed in the main groove cavity, and the neck is placed in the disengagement groove; During the movement of the pull rod, the head portion can push the clamping portion to move toward both sides of the separation head to expand the width of the disengagement slot and enable the head portion to disengage from the disengagement slot.

15. The transmission element according to any one of claims 13 to 14, characterized in that: After the pull rod is separated from the separation head, the hook surface of the hook forms a self-locking angle.

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