Insertion type tissue clamping device and transmission piece thereof

Abstract

According to the plug-in type tissue clamping device and the transmission part thereof, in the plug-in type tissue clamping device, when a clamping part clamps large tissue or hard tissue, an operator can apply larger acting force to the clamping part through the transmission part. Before the clamping piece completes the expected meshing effect, the clamping and abutting part is always opposite to the limiting part and cannot move to the locking window, at the moment, even if larger force is applied to the transmission piece, due to the fact that the limiting part limits the clamping and abutting part, an integral transmission structure is always kept between the pull rod and the separation head, and the clamping and abutting part cannot move to the locking window. The pull rod can drive the separation head to continue to move towards the locking window until the clamping and abutting part also moves to the locking window, the butt joint can push the clamping and abutting part to move towards the two sides of the separation head, the butt joint can be disengaged from the butt joint groove, and the clamping and abutting part can be clamped into the locking window. After the plastically deformed clamping and abutting part is locked to the locking window, the clamping and abutting part cannot return and rebound, and it can be guaranteed that the clamping piece is in a reliable clamping and closing state all the time.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and particularly to a structure of an insertable tissue clamping device for surgery and its transmission member. Background Art

[0002] An insertable tissue clamping device is an insertable medical device used to clamp tissues in the human body or animal body to achieve the functions of hemostasis or closure, and it includes hemostatic clips, tissue clips, etc. For example, during the minimally invasive treatment of digestive tract diseases, the tissue clamping device is usually inserted through the instrument channel of an endoscope to achieve the treatment purpose. For instance, hemostatic clips (or tissue clips) that have been widely used are used to stop bleeding or close wounds in the gastrointestinal tract bleeding or trauma sites.

[0003] After the clamping member completes the clamping action, in order to remove the introduction member from the human body and retain the clamping member in the human body, it is necessary to separate the clamping member from the introduction member. In the prior art, the clamping member is detachably connected to the introduction member. Specifically, after the clamping member completes the clamping action, a certain amount of pulling force is applied through the introduction member. At this time, since the clamping member has been closed, the clamping member cannot move, and it cannot move significantly because it bites into the internal tissue. Therefore, the applied pulling force is concentrated at the connection between the clamping member and the introduction member. When the pulling force reaches or exceeds the separation critical value, not only can the introduction member be pulled to separate from the clamping member, leaving the clamping member in the body while the introduction member can be withdrawn from the body. Moreover, the separated clamping member also needs to form a self-locking structure, which is usually achieved adaptively through structural changes after the clamping member completes the desired clamping action, that is, the clamping member needs to move to a set position to form self-locking.

[0004] However, during the actual operation process, when the clamping member performs the clamping action in the human body, the situation may occur that the clamping member clamps a larger or harder tissue, making it difficult to continue the clamping action. At this time, the clamping member has not achieved the desired clamping effect, and the clamping member has not moved to the position where self-locking can be formed. At this time, only the pulling force can be increased further, and the clamping member is further controlled to clamp the larger or harder tissue with a greater pulling force. However, often before the clamping member achieves the desired clamping effect on the larger or harder tissue, the pulling force has reached or exceeded the separation critical value, resulting in the separation of the clamping member from the introduction member, but in fact, the clamping action has not been completed at this time, and the clamping member cannot achieve self-locking, resulting in the failure of the clamping operation. Summary of the Invention

[0005] The present application provides an insertable tissue clamping device to solve the problem that the existing insertable tissue clamping device is difficult to successfully clamp larger or harder tissues.

[0006] The present application provides a transmission member for an insertable tissue clamping device, which can be used in the insertable tissue clamping device to provide a new structure for separating the separation head from the pull rod.

[0007] Based on one of the above purposes, some embodiments of the present application provide an insertable tissue clamping device, including:

[0008] A clamping member for clamping and releasing tissues in a target object's body;

[0009] A sleeve, the barrel of the sleeve having a limiting portion and a locking window sequentially distributed in a direction away from the clamping member;

[0010] And a transmission member having a separation head and a pull rod, the pull rod being used to connect to a control handle, the separation head extending into the sleeve and connecting to the clamping member, the separation head and the pull rod forming an integral transmission structure capable of separating 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 in the first direction, it drives the clamping member to clamp; when the integral transmission structure moves in the second direction, it drives the clamping member to open;

[0011] 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 capable of plastic deformation; the pull rod has a docking head, and the docking head is inserted into the docking groove;

[0012] When the clamping portion is opposite to the limiting portion, the limiting portion is located outside the clamping portion to limit the moving distance of the clamping portion toward both sides of the separation head, and the clamping portion forms a limit on the docking head to prevent the docking head from disengaging from the docking groove;

[0013] When the integral transmission structure moves in 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, and the docking head can push the clamping portion to move toward both sides of the separation head to release the limit of the clamping portion on the docking head, so that the docking head can disengage from the docking groove, and the clamping portion can be caught in the locking window.

[0014] According to the plug-in tissue clamping device provided by the above embodiments, it includes a clamping member, a sleeve and a transmission member. The transmission member is used to connect the control handle with the clamping member, so as to control the clamping and opening of the clamping member through the control handle. In this clamping device, the effect of releasing the overall transmission structure between the separation head and the pull rod is not only affected by the magnitude of the pulling force on the pull rod, but also affected by the positional relationship between the clamping portion and the limiting portion on the sleeve. When the clamping member clamps a larger or harder tissue, the operator can apply a greater force to the clamping member through the transmission member to control the clamping member to bite the larger or harder tissue more forcefully. The position of the clamping portion in the sleeve is related to the clamping degree of the clamping member. Before the clamping member achieves 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 a greater force is applied to the transmission member, due to the limitation of the limiting portion on the clamping portion, the clamping portion always prevents the docking head from disengaging from the docking groove, and the overall transmission structure is always maintained between the pull rod and the separation head. The pull rod can drive the separation head to continue moving towards the locking window position until the desired clamping effect is achieved. At this time, the clamping portion also moves to the locking window, and the docking 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 docking head, so that the docking head can disengage from the docking groove, and the clamping portion can also be stuck 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 docking groove has a main groove cavity and a separation groove communicating with the main groove cavity. 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 separation groove.

[0016] When the clamping portion is opposite to the limiting portion, under the limitation of the limiting portion, the cavity wall of the separation groove forms a limit on the head to prevent the head from disengaging from the separation groove, so that the separation head and the pull rod maintain an overall transmission structure.

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

[0018] In some embodiments, the side wall of the head has a guiding surface, and the guiding surface is inclined outwardly of the head in a direction from the side close to the neck to the side away from the neck.

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

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

[0021] When the hook faces the limiting portion, the limiting portion is located on the outer side of the hook to limit the moving distance of the hook on both sides of the separating head;

[0022] When the overall transmission structure moves in the first direction until the hook faces the locking window, the docking head can push the hook to move to both sides of the separating head, and the hook is snapped into the locking window.

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

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

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

[0026] In some embodiments, the separating head includes a top portion and two clamping portions respectively disposed on both sides of the top portion, with a gap left between the clamping portions; the top portion and the clamping portions enclose the docking groove.

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

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

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

[0030] In some embodiments, the pull rod and the separating head are an integrally formed overall transmission structure, or the pull rod and the separating head are a fixedly connected 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 separating head are separately arranged, and the overall transmission structure is formed by limiting the docking head through the docking groove.

[0033] In some embodiments, the clamping portion is made of a plastically deformable material. When the overall transmission structure moves in the first direction until the clamping portion is opposite to the locking window, the docking head can push the clamping portion to plastically deform towards both sides of the separating head.

[0034] In some embodiments, the clamping portion is movably connected to other parts of the separating head. When the overall transmission structure moves in the first direction until the clamping portion is opposite to the locking window, the docking head can push the clamping portion to move towards both sides of the separating head.

[0035] For one of the above purposes, some embodiments of the present application provide a transmission member of an insertable tissue clamping device, including:

[0036] A pull rod, which is used to connect with a control handle;

[0037] And a separating head, which is used to connect with a clamping member to transfer the movement of the pull rod to the clamping member;

[0038] The separating head and the pull rod form an integral transmission structure that can be separated from each other. The separating head has a docking groove and a clamping portion that serves as a side groove wall of the docking groove and can move towards both sides of the docking groove. The clamping portion has a catch; the pull rod has a docking head, and the docking head is inserted into the docking groove;

[0039] During the movement of the pull rod, the docking head can push the clamping portion to move towards both sides of the separating head, so that the catch can be hooked and locked with the sleeve of the insertable tissue clamping device, and the limit of the docking head by the clamping portion is released, so that the docking head can be disengaged from the docking groove.

[0040] According to the transmission member provided by the above embodiment, the docking head of the pull rod is inserted into the docking groove, and the clamping portion serves as a side groove wall of the docking groove and can move towards both sides of the docking groove. This structure enables the transmission member to form a limiting structure with the limiting portion on the sleeve of the insertable tissue clamping device when it is applied to the sleeve. Furthermore, only when the clamping member completes the clamping operation and the clamping portion is opposite to the locking window, can the docking head be disengaged from the docking groove, thereby releasing the integral transmission structure between the pull rod and the separating head, and realizing the clamping operation on larger or harder tissues. Moreover, the clamping portion has a catch, which can be hooked and locked with the sleeve of the insertable tissue clamping device when the clamping portion moves towards both sides of the separating head, so that the clamping member remains in a locked state. After the plastically deformed clamping portion is locked to the corresponding locking window, it will not reset and rebound, which can ensure that the clamping member is always in a reliable clamping state.

[0041] In some embodiments, the docking groove has a main groove cavity and a separation groove communicating with the main groove cavity. 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 separation groove.

[0042] During the movement of the pull rod, the head can push the clamping portion to move towards both sides of the separation head to widen the width of the separation groove, so that the head disengages from the separation groove.

[0043] In some embodiments, the side wall of the head has a guiding surface, and the guiding surface is inclined towards the outside of the head along the direction from the side close to the neck to the side away from the neck.

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

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

[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 overall transmission structure.

[0048] In some embodiments, the separation head includes a top and two clamping portions provided on both sides of the top. A gap is left between the clamping portions; the top and the clamping portions enclose the docking groove.

[0049] In some embodiments, at least one connecting rib is provided between the docking head and the top to connect the separation head and the docking head to form the overall transmission structure.

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

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

[0052] Or, the overall transmission structure in which the pull rod and the separation head are fixedly connected.

[0053] In some embodiments, the clamping portion is made of a plastically deformable material. During the movement of the pull rod, the docking head can push the clamping portion to plastically deform towards both sides of the separation head.

[0054] In some embodiments, the clamping portion is movably connected to other parts of the separating head. During the movement of the pull rod, the docking head can push the clamping portion to move towards both sides of the separating head. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 FIG. 1 is a schematic view of the external structure of an insertable tissue clamping device according to an embodiment of the present application, at this time the clamping member is in a fully closed state;

[0056] Figure 2 FIG. 2 is an exploded view of an insertable tissue clamping device according to an embodiment of the present application;

[0057] Figure 3 FIG. 3 is a schematic view of the structure of a transmission member according to an embodiment of the present application;

[0058] Figure 4 FIG. 4 is a longitudinal sectional view of an insertable tissue clamping device according to an embodiment of the present application, at this time the state where the clamping portion faces the limiting portion of the sleeve;

[0059] Figure 5 FIG. 5 is a longitudinal sectional view of an insertable tissue clamping device according to an embodiment of the present application, at this time the docking head pushes the clamping portion to move into the locking window;

[0060] Figure 6 FIG. 6 is a longitudinal sectional view of an insertable tissue clamping device according to an embodiment of the present application, at this time the clamping portion is locked with the locking window, and the pull rod is completely separated from the separating head;

[0061] Figures 7 - 12 FIG. 7 is a schematic view of the shapes of the separating head and the pull rod in different embodiments;

[0062] Figure 13 FIG. 8 is an exploded view between the rocker arm, the sliding block and the transmission member according to an embodiment of the present application;

[0063] Figure 14 FIG. 9 is a partially enlarged sectional view of the cooperating structure of the separating body and the pull rod according to an embodiment of the present application, at this time the docking head of the pull rod is restricted within the docking groove of the separating body;

[0064] Figure 15 FIG. 10 is a partially enlarged sectional view of the cooperating structure of the separating body and the pull rod according to an embodiment of the present application, at this time the docking head pushes the clamping portion of the separating body to plastically deform. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0065] The present invention will be further described in detail below in conjunction with the specific embodiments and the accompanying drawings. Similar elements in different embodiments are denoted by related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification in order to avoid the core part of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and the general technical knowledge in the art.

[0066] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clearly describing a certain embodiment and do not mean that they are the necessary sequences, unless it is stated that a certain sequence must be followed.

[0067] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any sequential or technical meaning. And the "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0068] The present application provides an insertable tissue clamping device (hereinafter referred to as a clamping device for convenience). This clamping device is used to clamp the internal tissue of a human or an animal (collectively referred to as the target object) to achieve the function of hemostasis or closure, and it can include, but is not limited to, hemostatic clips, tissue clips, etc. This clamping device can be a disposable instrument or a reusable instrument.

[0069] Please refer to Figures 1 - 3 , in some embodiments, the clamping device 1 includes a clamping member 100, a sleeve 200, and a transmission member 300. Of course, according to needs, the clamping device 1 may further include other components, such as a control handle, etc. These structures can refer 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 components such as a control handle. The number of the clamping members 100 can be more than one, and the clamping member 100 and the sleeve 200 can adopt various structures that can achieve clamping and releasing of the tissue under the drive of the transmission member 300. For example, in Figure 1 and 2In the illustrated embodiment, the sleeve 200 and the clamping member 100 are integrally formed structures. The clamping member 100 is provided with a plurality of slits 110. Through the deformation of the slits 110, the clamping member 100 can be bent inward or outward, thereby realizing the clamping and opening actions. Of course, in other embodiments, the sleeve 200 can also be a separated structure from the clamping member 100. The clamping member 100 can be arranged inside the sleeve 200 and can extend out of or retract 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 and will not be elaborated here.

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

[0072] Please refer to Figure 4 , the integral transmission structure is movably arranged relative to the sleeve 200. The motion directions of the integral transmission structure relative to the sleeve 200 include a first direction a1 and a second direction a2. When the integral transmission structure moves along the first direction a1, it drives the clamping member 100 to clamp; when the integral transmission structure moves along the second direction a2, it drives the clamping member 100 to open.

[0073] Specifically, the pull rod 320 is used to connect with the control handle, which can be realized by various connection structures in the prior art, that is, any structure that can transmit the motion and force input by the control handle to the pull rod 320 is acceptable. For example, please refer to Figure 1 and 2 , in some embodiments, one end of the pull rod 320 away from the separating head 310 is connected to the control handle through a connecting pipe 410. One end of the sleeve 200 away from the clamping member 100 may also be provided with a rotating sleeve 420 and a decoupling elastic member 430. The rotating sleeve 420 is installed on the sleeve 200 through the decoupling elastic member 430, and the pull rod 320 passes through the rotating sleeve 420 and the sleeve 200.

[0074] Please refer to Figure 4, the separating head 310 extends into the sleeve 200 and is connected to the clamping member 100. The connection between the separating head 310 and the clamping member 100 can be a direct connection or an indirect connection, and its purpose is to drive the clamping and opening of the clamping member 100 through the movement of the separating head 310. For example, please refer to Figure 2 and 4 , in some embodiments, the clamping device 1 further includes a pair of rocker arms 510, a sliding block 520, and a rocker arm rotating shaft 530. The separating head 310 is connected to the sliding block 520, which can be a fixed connection or other structural connections that can drive the sliding block 520 to move axially along the sleeve 200 together with the separating head 310. Specifically, in some embodiments, please refer to Figure 4 and 13 , the sliding block 520 can be divided into a first sliding block 521 and a second sliding block 522. The first sliding block 521 and the second sliding block 522 are processed separately and can be assembled into an entire sliding block 520. As shown in Figure 13 , in this embodiment, the first sliding block 521 and the second sliding block 522 respectively have cavities 523 ( Figure 13 only shows the cavity 523 on the first sliding block 521, and the second sliding block 522 also has a cavity 523 that fits the same). After the first sliding block 521 and the second sliding block 522 are assembled into the sliding block 520, an assembly cavity 524 is formed (as shown in Figure 4 ), and the separating head 310 can be fixedly installed in the assembly cavity 524 to achieve a fixed connection between the separating head 310 and the sliding block 520. Of course, in other embodiments, the separating head 310 and the sliding block 520 can also be fixedly connected or drivingly connected in other ways.

[0075] The pair of rocker arms 510 are respectively connected to the pair of clamping members 100 in a one-to-one correspondence, that is, one rocker arm 510 is connected to one clamping member 100. The rocker arm 510 is also rotatably connected to the sliding block 520. The movement of the transmission member 300 and the slider along the axial direction of the sleeve 200 can be divided into a first direction a1 and a second direction a2 (as shown in Figure 4As shown, when the transmission member 300 and the slider move along the first direction a1, the pair of rocker arms 510 can drive the pair of clamping members 100 to approach each other to form a clamping action; when the transmission member 300 and the slider 520 move along the second direction a2, the pair of rocker arms 510 can drive the pair of clamping members 100 to move away from each other to achieve an opening action. Of course, this embodiment only shows one way for the separating head 310 to drive the clamping members 100 to clamp and open. In other embodiments, the separating head 310 can also be connected to the clamping members 100 through other structures, so as to achieve the purpose of the separating head 310 driving the clamping members 100 to clamp and open. For example, the transmission structures of various transmission members (referred to as decoupling pieces or other names in some prior arts) and the clamping members 100 in the prior art can all be applied to this purpose.

[0076] Please refer to Figures 1 - 4 , in some embodiments, the barrel of the sleeve 200 has a limiting portion 210 and a locking window 220 that are sequentially distributed in the direction away from the clamping member 100. The separating head 310 has a docking groove 311 and a pair of clamping portions 312 that serve as the side groove walls of the docking groove 311 and can move toward both sides of the docking groove 311. The pull rod 320 has a docking head 321, and the docking head 321 is inserted into the docking groove 311. The clamping portion 312 serves as the side groove wall of the docking groove 311, and it encloses a part of the space of the docking groove 311. When there is an external structure restricting the clamping portion 312 from moving outward or under the support of the self-material strength of the clamping portion 312, the clamping portion 312 can also limit the docking head 321 to prevent the docking head 321 from disengaging from the docking groove 311 under unexpected circumstances, such as Figure 4 the embodiment shown. Moreover, the clamping portion 312 can move toward both sides of the docking groove 311 when the restriction of the external structure is removed or when the docking head 321 applies a force exceeding the self-material strength of the clamping portion 312, so as to achieve the purpose of releasing the docking head 321, such as Figure 5 and 6 the embodiment shown. The clamping portion 312 can move toward both sides of the docking groove 311 including but 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 (such as plastic metal materials (stainless steel 304 / 316 or other plastic metals) and other plastic deformation materials, etc.). When the overall transmission structure moves along the first direction a1 until the clamping portion 312 is opposite to the locking window 220, the docking head 321 can push the clamping portion 312 to plastically deform toward both sides of the separating head 310. After the plastically deformed clamping portion 312 is locked to the locking window 220, it will not return to its original shape and rebound, which can ensure that the clamping member 100 is always in a reliable clamping state.

[0078] Please refer to Figure 14 and15 , in some embodiments where the clamping portion 312 is made of a plastically deformable material, in order to better control the plastic deformation of the clamping portion 312 as expected, the clamping portion 312 may have a bending portion 3123. So that when the docking head 321 can push the clamping portion 312 to plastically deform towards both sides of the separating head 310, the clamping portion 312 mainly bends and deforms at the bending portion 3123 to move towards both sides of the separating head 310.

[0079] Further, please refer to Figure 14 and 15 , in some embodiments, in the axial direction of the sleeve 200, the lateral width of the bending portion 3123 on the clamping portion 312 is smaller than the lateral width of other regions, so as to ensure that the plastic deformation of the clamping portion 312 mainly concentrates at the bending portion 3123, making the bending portion 3123 deform preferentially. Moreover, the lateral width of other regions (such as the position of the hook 3121) is greater than that of the bending portion 3123, which can also ensure that when the docking head 321 can push the clamping portion 312, it will not cause much plastic deformation in other regions, thereby affecting the locking effect between the clamping portion 312 and the locking window 220.

[0080] In order to achieve that when the docking head 321 can push the clamping portion 312, the deformation of the clamping portion 312 concentrates at the root of the clamping portion 312. Therefore, in some embodiments, please refer to Figure 14 and 15 , the bending portion 3123 is located at the connection between the clamping portion 312 and the top 313. Of course, the bending portion 3123 can also be arranged at other positions of the clamping portion 312.

[0081] In some other embodiments, the clamping portion 312 is movably connected (such as rotatably connected) to other parts of the separating head 310 (such as the top 313 of the separating head 310 mentioned later). When the overall transmission structure moves in the first direction a1 until the clamping portion 312 is opposite to the locking window 220, the docking head 321 can push the clamping portion 312 to move towards both sides of the separating head 310.

[0082] In addition, the clamping portion 312 can also achieve the purpose of moving towards both sides of the docking groove 311 in other ways.

[0083] Please refer to Figure 4, in some embodiments, when the abutting portion 312 located in the sleeve 200 faces the limiting portion 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 has not reached the set clamping position), at this time, the limiting portion 210 is located outside the abutting portion 312, used to limit the moving distance of the abutting portion 312 to both sides of the separating head 310. At this time, the abutting portion 312 cannot move outward or can only move a certain distance, and this distance is not enough to cause the docking head 321 to disengage from the docking groove 311. At this time, since the abutting portion 312 cannot move outward, the abutting portion 312 limits the docking head 321 to prevent the docking head 321 from disengaging from the docking groove 311.

[0084] Please refer to Figure 5 , in some embodiments, when the overall transmission structure moves along the first direction a1, it can drive the clamping member 100 to perform a clamping operation. When the overall transmission structure moves along the first direction a1 until the abutting portion 312 faces the locking window 220, at this time, the clamping member 100 has been clamped to the position expected by the operator, that is, the clamping effect is achieved. At this time, due to the loss of the limiting effect of the limiting portion 210 on the abutting portion 312, the docking head 321 can push the abutting portion 312 to move to both sides of the separating head 310 to release the limit of the abutting portion 312 on the docking head 321, so that the docking head 321 can disengage from the docking groove 311, and the overall transmission structure effect between the separating head 310 and the pull rod 320 is released, and the pull rod 320 is separated from the separating head 310. At the same time, during the process of the abutting portion 312 moving outward, it can be inserted into the locking window 220 to form a lock on the clamping member 100. After the pull rod 320 is separated from the separating head 310, it continues to move along the first direction a1 and contacts the decoupling elastic member 430. Under the pulling force, the pull rod 320 drives the decoupling elastic member 430 and the rotating sleeve 420 to be separated from the sleeve 200 together and taken out from the target object body together.

[0085] In the clamping device 1 provided in the above embodiments, the effect of releasing the overall transmission structure between the separation head 310 and the pull rod 320 is not only affected by the magnitude of the pulling force on the pull rod 320, but also 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 or 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 bite the larger or harder tissue more forcefully. The position of the clamping portion 312 in the sleeve 200 is related to the biting degree of the clamping member 100. Before the clamping member 100 achieves the desired biting 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, due to the limitation of the limiting portion 210 on the clamping portion 312, the clamping portion 312 always prevents the docking head 321 from disengaging from the docking groove 311, and the overall transmission structure is always maintained between the pull rod 320 and the separation head 310. The pull rod 320 can drive the separation head 310 to continue moving towards the position of the locking window 220 until the desired clamping effect is achieved. At this time, the clamping portion 312 also moves to the locking window 220, and the docking head 321 can push the clamping portion 312 to move to both sides of the separation head 310 to release the limitation of the clamping portion 312 on the docking head 321, so that the docking head 321 can disengage from the docking groove 311, and the clamping portion 312 can also be inserted into the locking window 220 to lock the clamping member 100 in the clamped state.

[0086] Further, please refer to Figure 3 and 4 , in some embodiments, in order to form the aforementioned overall transmission structure between the separation head 310 and the pull rod 320, the docking groove 311 has a main groove cavity 3111 and a separation groove 3112 communicating with the main groove cavity 3111. The docking head 321 has a head 3211 and a neck 3212. The head 3211 is placed in the main groove cavity 3111, and the neck 3212 is placed in the separation groove 3112. When the clamping portion 312 is opposite to the limiting portion 210, under the limitation of the limiting portion 210, the cavity wall of the separation groove 3112 forms a limit on the head 3211 to prevent the head 3211 from disengaging from the separation groove 3112, so that the separation head 310 and the pull rod 320 maintain the overall transmission structure. Please refer to Figure 5 and 6 , when the overall transmission structure moves in the first direction a1 until the clamping portion 312 is opposite to the locking window 220, the head 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 3211 disengages from the separation groove 3112.

[0087] Please refer to Figure 3 and 4, in some embodiments, the lateral width of at least a portion of the head 3211 is greater than the lateral width of the release slot 3112 to ensure that the head 3211 cannot be detached from the release slot 3112 before the width of the release slot 3112 is enlarged. The lateral width of the neck 3212 is less than the lateral width of the release slot 3112 so that it can be received within the release slot 3112. The main cavity 3111 has a spatial size capable of accommodating the head 3211. Of course, in some embodiments, the shape of the main cavity 3111 can match the outer shape of the head 3211 so that the two can fit as closely as possible to prevent excessive wobbling of the head 3211 within the main cavity 3111 and affect the operation. The lateral width referred to in this embodiment means the width of each component in the direction perpendicular to the axial direction of the sleeve 200 on the cross-section passing through the axis of the sleeve 200 and simultaneously passing through the locking window 220 (such as Figure 4 the cross-section shown), that is, Figure 4 the dimension in the left-right direction shown is the lateral width). Of course, the lateral width can also be defined by other names.

[0088] Please refer to Figure 5 , in some embodiments, in order to more smoothly push the clamping portion 312 to move when the docking head 321 is detached from the docking slot 311, the side wall of the head 3211 has a guiding surface 3213, and the guiding surface 3213 is inclined outwardly with respect to the head 3211 in the direction from the side closer to the neck 3212 to the side away from the neck 3x212. When the pull rod 320 moves in the first direction a1, the clamping portion 312 can gradually move or deform outwardly along the guiding direction of the guiding surface 3213, thereby increasing the width of the release slot 3112.

[0089] Of course, in other embodiments, the guiding surface 3213 can also be designed into other shapes with guiding functions, or the guiding surface 3213 can be not provided.

[0090] Furthermore, on the premise of ensuring that the clamping portion 312 can limit the docking head 321 to prevent the docking head 321 from being detached from the docking slot 311 when not expected, and ensuring that the docking head 321 can move outwardly with the pull rod 320 driving the clamping portion 312 when the clamping portion 312 is opposite to the locking window 220, the main cavity 3111 and the head 3211 can be designed into any feasible shapes respectively.

[0091] For example, in some embodiments, the shapes of the main cavity 3111 and the head 3211 are trapezoidal, inverted trapezoidal, mushroom-shaped, heart-shaped, square, triangular or other shapes. Please refer to Figures 4 - 6 and Figures 7 - 10 , in some embodiments, the head 3211 is designed to be heart-shaped. Please refer to Figure 11, in some embodiments, the head 3211 is designed as an inverted trapezoid. Please refer to Figure 12 , in some embodiments, the head 3211 is designed as a mushroom head shape. Please refer to Figures 4 - 6 and Figure 11 、 12 , in some embodiments, the main groove cavity 3111 is designed to have an inverted trapezoid. Please refer to Figure 7 and 8 , in some embodiments, the main groove cavity 3111 is designed as a square with rounded corners. Please refer to Figure 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 in a mutually adapted shape, for example, in the Figures 9 - 11 illustrated embodiment. When the main groove cavity 3111 and the head 3211 are in a mutually adapted shape, even if the pull rod 320 and the separation head 310 are not integrally formed or fixedly connected, the movement of the pull rod 320 can drive the separation head 310 to move more synchronously.

[0093] Furthermore, when forming the overall transmission structure, the pull rod 320 and the separation head 310 can be either an integrally formed structure, a fixedly connected structure, or a structure that is separated from each other but can move together through structural constraints.

[0094] Please refer to Figure 3 and Figures 7 - 12 , in some embodiments, in some embodiments, the separation head 310 and the pull rod 320 are connected into an overall transmission structure through at least one connecting rib 301, 302. The connecting ribs 301, 302 are used to connect the separation head 310 and the pull rod 320 into an overall structure, which can be either an integrally formed overall structure or an overall structure formed by fixed connection. After connecting the separation head 310 and the pull rod 320 through the connecting ribs 301, 302, the crosstalk between the pull rod 320 and the separation head 310 can be reduced, and problems such as displacement between the pull rod 320 and the separation head 310 during the installation and operation of the clamping member 100 can be avoided. The connecting ribs 301, 302 can be arranged between any parts of the separation head 310 and the pull rod 320, and the connecting ribs 301, 302 are designed as structures that can be torn by the external force applied by the operator when the pull rod 320 moves along the first direction a1, so as to ensure that after the clamping member 100 completes the clamping operation, the separation head 310 and the pull rod 320 can be separated by tearing the connecting ribs 301, 302.

[0095] Please refer to Figure 3 and Figures 7 - 12, in some embodiments, the separation head 310 includes a top 313 and two clamping portions 312 disposed on both sides of the top 313. A gap is left between the clamping portions 312, and this gap forms a detachment groove 3112. The top 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 provided between the docking head 321 and the top 313 of the separation head 310 to connect the separation head 310 and the docking head 321 into an integral transmission structure. By providing the connecting rib 301 between the docking head 321 and the top 313 of the separation head 310, it can be ensured that the docking head 321 and the separation head 310 are better aligned axially in the sleeve 200.

[0096] Please refer to Figure 3 and Figures 7 - 8 , in some embodiments, at least one connecting rib 302 is provided between the neck 3212 of the docking head 321 and the clamping portion 312 to connect the separation head 310 and the docking head 321 into an integral transmission structure. By providing the connecting rib 302 between the neck 3212 and the clamping portion 312, the positions of the separation head 310 and the pull rod 320 in the transverse direction can be ensured to be stable, reducing transmission and displacement. In Figure 3 and Figures 7 - 8 , a connecting rib 302 is provided between each clamping portion 312 and the neck 3212 to ensure the stable positions of the clamping portion 312 and the neck 3212. Moreover, in the structure with this connecting rib 302, the connecting rib 302 can increase the release force. When the pull rod 320 is pulled and the connecting rib 302 breaks, it can not only make a breaking sound but also provide an obvious breaking feel, so as to prompt the operator that the pull rod 320 is separated from the separation head 310. Of course, in other embodiments, the connecting rib 302 can also be provided between the clamping portion 312 and other positions of the pull rod 320 except the neck 3212. For example, Figure 9 in the embodiment shown, the connecting rib 302 is provided at the shoulder 322 of the pull rod 320, and the shoulder 322 is located below the neck 3212.

[0097] Please refer to Figure 3 and Figures 7 - 9 , in some embodiments, at least one connecting rib 301 is provided between the docking head 321 and the top 313 of the separation head 310, and at the same time at least one connecting rib 302 is provided between the docking head 321 and the clamping portion 312. By providing the connecting ribs 301 and 302 at at least two different positions in the axial direction of the pull rod 320, a secondary separation structure is formed while ensuring the reliable connection between the pull rod 320 and the separation head 310. The release feel generated in this structure is clear and the force value is stable.

[0098] Specifically, please refer to Figure 3 and 4, when the transmission member 300 moves in the first direction a1 within the sleeve 200, the pull rod 320 is subjected to the pulling force of the separation head 310. When the connecting rib 301 located between the docking head 321 and the top 313 of the separation head 310 reaches the yield limit, the connecting rib 301 breaks (this state is called primary separation). At the same time, while the docking head 321 continues to move downward under force and squeezes the clamping part 312. If the separation head 310 is still within the sleeve 200 at this time and has not reached the locking window 220, the clamping part 312 is restricted by the limiting part 210 on the sleeve 200 and cannot deform. When the connecting rib 302 between the clamping part 312 and the pull rod 320 reaches the yield limit, the connecting rib 302 breaks, and the docking head 321 disengages downward. At this time, the clamping part 312 undergoes a position change due to the extrusion of the docking head 321 (this state is called secondary separation). At this time, the clamping part 312 is at the locking window 220. When the docking head 321 disengages, the position change distance of the clamping part 312 is the largest and it is no longer restricted by the sleeve 200 and engages and fixes with the locking window 220.

[0099] Of course, in other embodiments, either the connecting rib 301 between the docking head 321 and the top 313 of the separation head 310 or the connecting rib 302 between the docking head 321 and the clamping part 312 can also be used selectively. For example, in Figures 10 - 12 the illustrated embodiment, only the connecting rib 301 between the docking head 321 and the top 313 of the separation head 310.

[0100] Further, please refer to Figure 3 and 7 , in some embodiments, the connecting rib 302 between the neck 3212 and the clamping part 312 is arranged horizontally. The extending direction of the connecting rib 302 is perpendicular to or at an angle to the first direction a1. 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, please refer to Figure 2, in some embodiments, the integrally formed integral transmission structure is cut on the same base material by a laser cutting process. The integrally formed integral transmission structure is such that the pull rod 320 and the separation head 310 (or the entire transmission part 300) are integrally processed from the same material, rather than being assembled by combining two or more parts. The integrally formed integral transmission structure can be made by, but not limited to, injection molding, laser cutting, and other machining processes. In particular, when laser cutting is used, processing with extremely small gaps can be achieved, which is beneficial to the miniaturization of the overall structure and the improvement of structural compactness. In particular, when a connecting rib is provided between the pull rod 320 and the separation head 310, a little material can be reserved during laser cutting to form the connecting rib, and the processing is very simple and convenient. In addition, the pull rod 320 and the separation head 310 can also be fixed together by means such as clamping, welding, bonding, screw locking, and riveting.

[0102] In addition, in some embodiments, the pull rod 320 and the separation head 310 can also be separately arranged, and there is no direct connection relationship between them. Instead, through the mutual limitation of the docking groove 311 and the docking head 321, an integral transmission structure is formed. When the docking groove 311 and the docking head 321 mutually form limitations in the first direction a1 and the second direction a2, the movement of the pull rod 320 in the first direction a1 and the second direction a2 can also drive the separation head 310 to move in the first direction a1 and the second direction a2. Specifically, on the basis of the Figures 9 - 10 illustrated embodiment, the connecting rib 301 can be omitted, and relying on the mutual limitation between the docking groove 311 and the docking head 321, the movement of the pull rod 320 and the separation head 310 in the first direction a1 and the second direction a2 can be realized.

[0103] Further, please refer to Figure 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 and the limiting portion 210 are opposite, the limiting portion 210 is located outside the hook 3121 to limit the moving distance of the hook 3121 to both sides of the separation head 310. When the integral transmission structure moves in the first direction a1 until the hook 3121 is opposite to the locking window 220, the docking head 321 can push the hook 3121 to move to both sides of the separation head 310, and the hook 3121 is snapped into the locking window 220.

[0104] Further, please refer to Figure 6, in some embodiments, when the catch 3121 engages with the locking window 220, the engaging surface 3122 of the catch 3121 forms a self-locking angle A such that, in the axial direction of the sleeve 200, the outer end of the engaging surface 3122 is closer to the clamping member 100 than the inner end of the engaging surface 3122. This self-locking angle A can enhance the locking force when the outer end of the catch 3121 engages with the locking window 220, achieving a more secure 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 uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention pertains, based on the idea of the present invention, several simple deductions, deformations, or substitutions can also be made.

Claims

1. An insertable tissue clamping device, characterized in that Comprising: A clamping member for clamping and releasing tissue in a target object; A sleeve, the barrel of the sleeve having 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 separating head and a pull rod, the pull rod being used for connecting with a control handle, the separating head extending into the sleeve and connecting with the clamping member, the separating head and the pull rod forming an integral transmission structure capable of separating from each other; the integral transmission structure is movably arranged relative to the sleeve, and the moving 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, it drives the clamping member to clamp; when the integral transmission structure moves in the second direction, it drives the clamping member to open; The separating 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 capable of plastic deformation; the pull rod has a docking head, and the docking head is inserted into the docking groove; When the clamping portion faces the limiting portion, the limiting portion is located outside the clamping portion to limit the moving distance of the clamping portion toward both sides of the separating head, and the clamping portion forms a limit on the docking head to prevent the docking head from separating from the docking groove; When the integral transmission structure moves in the first direction until the clamping portion faces the locking window, the docking head can push the clamping portion to plastically deform toward both sides of the separating head to release the limit of the clamping portion on the docking head, so that the docking head can separate from the docking groove, and the clamping portion can be caught in the locking window.

2. The plug-in tissue clamping device according to claim 1, wherein The docking groove has a main groove cavity and a separation groove communicating with the main groove cavity, 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 separation groove; When the clamping portion faces the limiting portion, under the limitation 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 separating head and the pull rod maintain an integral transmission structure; When the integral transmission structure moves in the first direction until the clamping portion faces the locking window, the head can push the clamping portion to move toward both sides of the separating head to widen the width of the separation groove, so that the head can separate from the separation groove.

3. The plug-in tissue clamping device according to claim 2, wherein The side wall of the head has a guiding surface, and the guiding surface is inclined outward of the head in a direction from the side close to the neck to the side away from the neck.

4. The plug-in tissue clamping device according to any one of claims 1 to 3, characterized in that The outer side of the clamping portion has a catch; When the catch faces the limiting portion, the limiting portion is located outside the catch to limit the moving distance of the catch toward both sides of the separating head; When the integral transmission structure moves in the first direction until the catch faces the locking window, the docking head can push the catch to move toward both sides of the separating head, and the catch is caught in the locking window.

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

6. The plug-in tissue clamping device according to any one of claims 1 to 5, characterized in that, The separating head and the pull rod are connected by at least one connecting rib to form the integral transmission structure.

7. The plug-in tissue clamping device according to any one of claims 1 to 6, characterized in that, The separating head includes a top portion and two clamping portions disposed on both sides of the top portion. A gap is left between the clamping portions; the top portion and the clamping portions enclose the docking groove.

8. The plug-in tissue clamping device according to claim 7, wherein At least one connecting rib is provided between the docking head and the top portion to connect the separating head and the docking head to form the integral transmission structure.

9. The plug-in tissue clamping device according to claim 7 or 8, characterized in that, The docking head has a neck portion, and at least one connecting rib is provided between the neck portion and the clamping portion to connect the separating head and the docking head to form the integral transmission structure.

10. The plug-in tissue clamping device according to any one of claims 1 to 9, characterized in that, The pull rod and the separating head are an integrally formed integral transmission structure, or an integral transmission structure in which the pull rod and the separating head are fixedly connected.

11. The plug-in tissue clamping device according to claim 10, wherein The integrally formed integral transmission structure is cut on the same substrate using a laser cutting process.

12. The plug-in tissue clamping device according to any one of claims 1 to 5, characterized in that, The pull rod and the separating head are separately arranged, and the integral transmission structure is formed by the limiting of the docking head by the docking groove.

13. The transmission member of an insertable tissue clamping device, characterized in that, Comprising: A pull rod for connecting with a control handle; And a separating head for connecting with a clamping member to transmit the movement of the pull rod to the clamping member; The separating head and the pull rod form an integral transmission structure capable of separating from each other. The separating head has a docking groove and clamping portions that serve as side groove walls of the docking groove and can move toward both sides of the docking groove. The clamping portions are made of a material capable of 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 head can push the clamping portions to plastically deform toward both sides of the separating head, releasing the limitation of the docking head by the clamping portions, such that the docking head can disengage from the docking groove; the clamping portions have hooks for engaging and locking with the sleeve of the insertable tissue clamping device when the clamping portions move toward both sides of the separating head.

14. The transmission part according to claim 13, characterized in that, The docking groove has a main groove cavity and a separation groove communicating with the main groove cavity. The docking head has a head portion and a neck portion. The head portion is placed in the main groove cavity, and the neck portion is placed in the separation groove; During the movement of the pull rod, the head portion can push the clamping portions to move toward both sides of the separating head to widen the width of the separation groove, so that the head portion disengages from the separation groove.

15. The transmission part according to any one of claims 13 to 14, characterized in that, After the pull rod and the separating head are separated, the engaging surface of the hook forms a self-locking angle.

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