Insertable tissue clip closure device and its movement lever

Abstract

The utility model provides an insertion type tissue clamp closing device and its movement pole (200), movement pole (200) is integrative structure, has reservation section (220) and separate section (230). In the movement course of movement pole (200) along the third stroke, through the stop structure (540) on separate base (500), the reservation section (220) is formed limit, prevents the reservation section (220) from moving with separate section (230), thereby makes the reservation section (220) and separate section (230) break at first tear (240). Reservation section (220) and separate section (230) are integrative structure, convenient to process, need not secondary assembly, can simplify structure and assembly step. The separation of reservation section (220) and separate section (230) is mainly realized through the limiting effect of separate base (500), can simplify the clamping structure, and the whole clamping structure is smaller.

Description

Technical Field

[0001] This application relates to the field of medical devices, specifically to the structure of an insertable tissue clip device for surgical procedures. Background Technology

[0002] An insertable tissue clip is an insertable medical device used to clamp tissues in the human or animal body to achieve hemostasis or closure. It includes hemostatic clips, tissue clips, etc.

[0003] For example, in minimally invasive treatment of gastrointestinal diseases, tissue clips are often inserted through the instrument channel of an endoscope to achieve therapeutic goals. Hemostatic clips (or tissue clips) are widely used to stop bleeding or close wounds at sites of gastrointestinal bleeding or trauma.

[0004] In this insertable tissue clamping device, after the clamping structure clamps the target object, it is necessary to keep the clamping structure in the clamping state and disengage the clamping structure from other components (usually referred to as internal disengagement), so that the clamping structure remains temporarily inside the surgical object.

[0005] In some existing structures, the internal release mechanism consists of a pull rod head, a central shaft, and a release hook. The hook penetrates the central shaft and has at least two semi-circular metal pieces forming a complete circular hole, or a metal piece with a C-shaped opening at the top, which can open outwards under tension. When the opening size exceeds the diameter of the central shaft, forced separation from the central shaft is achieved. This structure has many parts and requires high assembly standards.

[0006] In other existing structures, the tie rod is a one-piece, detachable structure, where material is removed from a single piece of metal at a predetermined location, causing it to break under tension. However, separating this one-piece, detachable structure requires a clamping structure to limit the tie rod, making the clamping structure more complex and requiring higher assembly standards. Invention Overview

[0008] Technical issues

[0009] This application provides an insertable tissue clamping device and its moving rod to demonstrate a novel way in which the clamping structure disengages from the moving rod.

[0010] Solution to the problem

[0011] Technical solutions

[0012] To achieve the above objectives, one embodiment of this application provides an insertable tissue clamping device, comprising:

[0013] A clamping structure, the clamping structure including at least two clamping arms, the clamping arms being used to clamp a target object;

[0014] A separation base, wherein the separation base is detachably connected to the clamping structure or is an integrally formed structure, and the separation base has a stop structure;

[0015] The moving rod is a one-piece molded structure having a retaining section and a separating section, which are connected to each other by at least one first tear to form a one-piece molded structure; the moving rod is movably disposed and connected to the clamping structure, and the clamping arm opens and closes based on the position change of the moving rod;

[0016] The moving rod has a first stroke, a second stroke, and a third stroke; in the first stroke, the moving rod drives the clamping arm to open; in the second stroke, the moving rod drives the clamping arm to move to a clamping state to clamp the target object; in the third stroke, the clamping arm remains in the clamping state, and the stop structure is located on the movement path of the retaining section to prevent the retaining section from moving with the separating section, so that the retaining section and the separating section break at the first tear.

[0017] In one embodiment, the moving rod has a slot arranged along its axial direction, at least one side wall of the slot is located on the retaining section, and the stop structure protrudes toward the moving rod and extends into the slot to abut against the retaining section when the moving rod moves along the third stroke.

[0018] In one embodiment, the separating base is provided with a travel limiting member, the separating section has a limiting part, the travel limiting member cooperates with the limiting part, and the travel limiting member restricts the movement of the limiting part and the moving rod within a set range.

[0019] In one embodiment, the travel limiting member includes a limiting shaft, and the limiting part is a limiting groove opened along the axial direction of the moving rod. The limiting shaft is placed in the limiting groove, and the two ends of the limiting groove correspond to the extreme movement positions of the moving rod, respectively.

[0020] In one embodiment, the end of the retained section opposite to the separated section has a concave region, and the first tear portion is disposed within the concave region.

[0021] In one embodiment, the moving rod is a cylindrical structure, and there are at least two first tear portions distributed circumferentially around the moving rod.

[0022] In one embodiment, one end of the moving rod extends into the clamping structure, the retaining section has an elastic body protruding towards the clamping structure, the clamping structure includes a slot that can cooperate with the elastic body, the elastic body is located in the clamping structure and is in a state of compression deformation, the elastic body can engage with the slot under the action of elastic force, and the clamping structure is held in the clamping state.

[0023] In one embodiment, the elastic body is a spring sheet integrally formed on the moving rod, and the spring sheet is inclined toward the distal end of the clamping structure along its protruding direction.

[0024] In one embodiment, the clamping structure includes at least two clamping arms connected to each other. Each clamping arm includes a clamping head and a flexible portion, which are connected. A moving rod is connected to the clamping arm, and the clamping arms are arranged in a claw-like structure to clamp a target object. The flexible portion has a deformable structure that can be bent in the closing direction of the clamping structure and / or in the opening direction of the clamping structure.

[0025] Based on the above objectives, one embodiment of this application provides a moving rod of an insertable tissue clamping device. The moving rod is an integrally formed structure having a retaining section and a separating section. The retaining section and the separating section are connected to each other as an integrally formed structure by at least one first tear. The retaining section is used to connect with a clamping structure, and the retaining section has a stop portion that can cooperate with the stop structure of the separating base.

[0026] In one embodiment, the moving rod has a slot arranged along its axial direction for insertion of a stop structure of the separation base, and at least one side wall of the slot is located on the retaining section.

[0027] In one embodiment, the end of the retained section opposite to the separated section has a concave region, and the first tear portion is disposed within the concave region.

[0028] In one embodiment, the moving rod has a limiting portion for cooperating with a travel limiting member on the insertable tissue clamping device to restrict the movement of the moving rod within a set range.

[0029] In one embodiment, the limiting part is a limiting groove opened along the axial direction of the moving rod, and the two ends of the limiting groove correspond to the extreme movement positions of the moving rod, respectively.

[0030] In one embodiment, the moving rod is a cylindrical structure, and there are at least two first tear portions distributed circumferentially around the moving rod.

[0031] In one embodiment, the retaining segment has an elastic body protruding toward the clamping structure, the elastic body being used to lock with the clamping structure, and the elastic body being inclined toward the side where the retaining segment is located along its protruding direction.

[0032] Beneficial effects of the invention

[0033] Beneficial effects

[0034] According to one embodiment of the insertable tissue clamping device, the moving rod is a one-piece molded structure with a retention section and a separation section. During the movement of the moving rod along the third stroke, the retention section is limited by the stop structure on the separation base, preventing the retention section from moving with the separation section, thereby causing the retention section and the separation section to break at the first tear. In this structure, the retention section and the separation section are one-piece molded structures, which are easy to manufacture, and there is no assembly relationship between the two, eliminating the need for secondary assembly, thus simplifying the structure and assembly steps. The separation of the retention section and the separation section is mainly achieved by the limiting effect of the separation base, which simplifies the clamping structure, making the overall clamping structure smaller and reducing the discomfort and damage caused by the clamping structure remaining in the surgical subject's body.

[0035] Brief description of the accompanying drawings Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of an insertable tissue clipping device in one embodiment of this application, wherein the transmission components are drawn in an abbreviated manner;

[0037] Figure 2 This is a partial cross-sectional view of the connection structure between the clamping structure and the transmission component in one embodiment of this application;

[0038] Figure 3 This is a cross-sectional view of the clamping structure in an open state in one embodiment of this application;

[0039] Figure 4 This is a cross-sectional view of the clamping structure in a clamping state in one embodiment of this application;

[0040] Figure 5 This is a cross-sectional view of the clamping structure in an open state in another embodiment of this application;

[0041] Figure 6 This is a schematic diagram of an embodiment of the present application in which the motion rod is a one-piece molded structure;

[0042] Figure 7 for Figure 6 The diagram shows the motion rod after it breaks from the first tear.

[0043] Figure 8This is a schematic diagram of the structure of the first tear portion on the integrally formed motion rod in one embodiment of this application;

[0044] Figure 9 This is a schematic diagram of the structure in one embodiment of this application, showing the motion rod driving the clamping structure to the open state;

[0045] Figure 10 for Figure 9 A schematic diagram of the structure after a portion of the structure has been partially cut open in the state shown.

[0046] Figure 11 This is a schematic diagram of the structure in one embodiment of the present application when the moving rod drives the clamping structure to move to the clamping state;

[0047] Figure 12 for Figure 11 A schematic diagram of the structure after a portion of the structure has been partially cut open in the state shown.

[0048] Figure 13 This is a schematic diagram of the structure of the insertable tissue clamping device in a clamping state, with the clamping arm locked in the locking structure, according to one embodiment of this application.

[0049] Figure 14 for Figure 13 A schematic diagram of the structure of the clamping component after partial cross-section in the state shown;

[0050] Figure 15 This is a schematic diagram of the structure of the retaining section and the separating section of the moving rod in one embodiment of this application when they are separated;

[0051] Figure 16 for Figure 15 A schematic diagram of the structure after a portion of the structure has been partially cut open in the state shown.

[0052] Figure 17 This is a schematic diagram of the structure when the clamping structure is separated from the separation base in one embodiment of this application.

[0053] Invention Embodiments

[0054] Embodiments of the present invention

[0055] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0056] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, the terms "connection" and "linkage" used in this application include both direct and indirect connections (linkages).

[0057] This embodiment provides an insertable tissue clamping device (hereinafter referred to as a clamping device for ease of description), which is used to clamp tissues (collectively referred to as target objects) in human or animal bodies to achieve hemostasis or closure. It may include, but is not limited to, hemostatic clips, tissue clips, etc.

[0058] Please refer to Figure 1-5 The clamping device includes a clamping structure 100, a moving rod 200, and other related structures. For example, it may also include a transmission assembly 300, a control handle 400, and a separation base 500. The clamping structure 100 and the moving rod 200 cooperate to achieve clamping and opening actions.

[0059] This clamping structure can be of various designs capable of both opening and clamping the target object. For example, please refer to... Figure 3 and 4In one embodiment, the clamping structure 100 includes at least two clamping arms 110 connected to each other. This connection can be either a one-piece molded structure or a fixed connection between the clamping arms 110. Each set of clamping arms 110 includes a clamping head 1111 and a flexible portion 1112. The clamping head 1111 and the flexible portion 1112 are connected; similarly, this connection can be either a one-piece molded structure or a fixed connection. For example, in one embodiment, the clamping structure 100 is a one-piece molded structure. This includes the clamping arms 110 being one-piece molded with each other, and the clamping head 1111 and the flexible portion 1112 within the same clamping arm 110 also being one-piece molded. The flexible portion 1112 has a deformable structure capable of bending in the closing direction and / or bending in the opening direction of the clamping structure 100.

[0060] exist Figure 3 and 4 In the structure shown, the opening and closing of the clamping arm 110 mainly relies on the deformation of the flexible part 1112. Figure 4 In the illustrated embodiment, the initial state of the clamping structure 100 is a clamping state, meaning that the clamping structure 100 is in a clamping state without deformation of the bendable portion 1112. At this time, the bendable portion 1112 has at least a deformable structure capable of bending in the opening direction of the clamping structure 100, thereby... Figure 3 As shown, the clamping structure 100 is opened. Of course, in other embodiments, the initial state of the clamping structure 100 may also be an open state; for example, the clamping structure 100 may be in an open state without deformation of the flexible portion 1112. Figure 1 The open state is shown. At this time, the flexible portion 1112 has at least a deformable structure capable of clamping the structure 100 in the closing direction, thereby enabling it to move to the position shown. Figure 4 The state shown indicates that the clamping structure 100 is closed. In some other embodiments, the flexible portion 1112 may simultaneously have a deformable structure capable of bending in both the closing direction and the opening direction of the clamping structure 100, thereby allowing the clamping structure 100 to change more flexibly during opening and closing.

[0061] Alternatively, please refer to Figure 5In one embodiment, the clamping structure 100 includes at least two clamping arms 110 and a sleeve 140. One end of each clamping arm 110 is placed inside the sleeve 140 and connected to the moving rod 200, while the other end of the clamping arm 110 extends outside the sleeve 140. The clamping arms 110 are assembled together by a pin. When the clamping arms 110 are pulled into the sleeve 140, the clamping arms 110 engage with the front edge of the sleeve 140. Limited by the outer diameter of the sleeve 140, a reverse compressive force is applied to the clamping arms 110, causing the clamping arms 110 to elastically deform inward, thereby closing. Figure 5 As shown, when the clamping arm 110 assembly moves to the distal end, it pushes the clamping arm 110 out of the sleeve 140. Due to its elastic restoring force, the clamping arm 110 automatically reopens, and at this time, the clamping arm 110 is in the open state. By repeating this process, the opening and closing of the clamping structure can be achieved.

[0062] Please refer to Figure 6-8 The moving rod 200 is a one-piece molded structure, having a retaining section 220 and a separating section 230. The retaining section 220 and the separating section 230 are connected as a single molded structure by a first tear 240. The moving rod 200 can be a pull rod or other structures.

[0063] The movement of the moving rod 200 can be along its axis or rotational, etc. For example, please refer to... Figure 9 and 10 In one embodiment, when the moving rod 200 moves axially away from the control handle 400 and closer to the clamping structure 100 (moving to the right as shown in the figure), the moving rod 200 can drive the clamping structure 100 to open outward, thereby moving the clamping structure 100 to the open state. Please refer to... Figure 11-12 In one embodiment, when the moving rod 200 moves axially towards the control handle 400 and away from the clamping structure 100 (moving to the left as shown in the figure), the moving rod 200 can drive the clamping structures 100 to move inward towards each other, thereby moving the clamping structures 100 to a clamping state. Of course, in other embodiments, the movement relationship between the moving rod 200 and the clamping structure 100 can be... Figure 9-12 The difference is as shown. For example, when the motion lever 200 moves toward the control handle 400, the clamping structure 100 is driven to open, and when it moves toward the clamping structure 100, the clamping structure 100 is driven to close.

[0064] Regardless of its movement, the moving rod 200 has three strokes: a first stroke, a second stroke, and a third stroke. In the first stroke, the moving rod 200 moves the clamping heads 1111 away from each other to open them. In the second stroke, the moving rod 200 moves the clamping heads 1111 closer together, and the clamping structure 100 moves to a clamping state to clamp the target object. In the third stroke, the clamping structure 100 maintains the clamping state and separates from the moving rod 200, with the separation base 500 disconnecting from the clamping structure 100 at the second tear 130. During the third stroke, the retaining section 220 and the separating section 230 disconnect, while the clamping structure 100 remains on the retaining section 220. The disconnection of the separation base 500 from the clamping structure 100 can occur simultaneously, or one action can precede the other.

[0065] The first, second, and third strokes constitute three parts of the entire movement of the moving rod 200. These three strokes can be in the same direction, or at least two strokes can be in different directions. The strokes can be completely separate and unrelated, or at least two strokes can be continuous or overlapping; for example, the third stroke can be closely connected to the second stroke. Of course, the second and third strokes can also be two separate, non-continuous parts.

[0066] As an example, please refer to Figure 9-10 At this time, the moving rod 200 is in the first stroke. When the moving rod 200 moves away from the control handle 400 along its axis and moves closer to the clamping structure 100 (moving to the right as shown in the figure), the moving rod 200 can drive the clamping structure 100 to open outward, thereby moving the clamping structure 100 to the open state.

[0067] Please refer to Figure 11-12 At this time, the moving rod 200 is in the second stroke. When the moving rod 200 moves towards the control handle 400 along its axis and moves away from the clamping structure 100 (moving to the left as shown in the figure), the moving rod 200 can drive the clamping structure 100 to move inward towards each other, thereby moving the clamping structure 100 to the clamping state.

[0068] Please refer to Figure 13-17 At this point, the moving rod 200 is in its third stroke. As the moving rod 200 approaches the control handle 400 along its axial direction and moves away from the clamping structure 100 (moving to the left as shown in the diagram), this third stroke is in the same direction as the second stroke and is closely connected. That is, when the clamping structure 100 moves to the clamping state, the moving rod 200 switches from the second stroke to the third stroke. This third stroke can be further divided into multiple sub-strokes, including a locking stroke, an inner release stroke, and an outer release stroke.

[0069] Please refer to Figure 13-14When the moving rod 200 switches to the third stroke and moves to the position shown in the figure, the clamping structure 100 is locked, and the moving rod 200 cannot move in the opposite direction to open the clamping structure 100. During this process, the movement stroke of the moving rod 200 is the locking stroke.

[0070] Please refer to Figure 15-16 After the moving rod 200 completes its locking stroke, it enters the inner release stroke. When the moving rod 200 moves to the position shown in the figure, the clamping structure 100 and the retaining section 220 break off from the separating section 230 together. The moving rod 200 can no longer move the clamping structure 100, losing control of the clamping structure 100, and the clamping structure 100 is held in the locked state. During this process, the movement stroke of the moving rod 200 is the inner release stroke.

[0071] Please refer to Figure 17 After completing its inner release stroke, the moving rod 200 enters its outer release stroke. When the moving rod 200 reaches the position shown in the figure, the clamping structure 100 and the separation base 500 separate. At this point, the clamping structure 100 remains on the target object it is holding. The separation base 500, the moving rod 200, and the transmission assembly 300 can be extracted from the target object. The movement stroke of the moving rod 200 during this process is the outer release stroke.

[0072] certainly, Figure 13-17 Only one embodiment of the third stroke is shown. In other embodiments, the locking stroke, inner disengagement stroke, and outer disengagement stroke may overlap, for example, the inner disengagement stroke and the outer disengagement stroke may overlap, and the inner disengagement and outer disengagement may be performed simultaneously.

[0073] In this embodiment, the retaining section 220 and the separating section 230 are integrally formed, meaning the entire moving rod 200 is machined from the same material as a single piece, rather than being assembled from two or more parts. This moving rod 200 is easy to manufacture, requires no secondary assembly, has lower costs, and better stability.

[0074] Further, please refer to Figure 6 and 7 In one embodiment, the end of the retaining segment 220 opposite to the separating segment 230 has a concave region 241, and the first tear portion 240 is disposed within the concave region 241. Figure 6 and 7 As shown, this design allows the fracture surface of the first tear 240 to be contained within the concave region 241 after it breaks, preventing the sharp burrs from being exposed and avoiding damage to the surgical subject.

[0075] In one embodiment, the width of the first tear portion 240 can be reserved as needed, and multiple first tear portions 240 can be set according to functional requirements to make the structure more reliable and stable.

[0076] To assist the movement bar 200 in disengaging from the inside, please refer to... Figure 14 and 16 In one embodiment, the separating base 500 has a stop structure 540, and the retaining section 220 has a stop portion capable of engaging with the stop structure 540 of the separating base 500. The stop structure 540 is located on the movement path of the retaining section 220 (such as the stop portion). When the moving rod 200 moves along its third stroke, specifically when the moving rod 200 is in its third stroke, the stop structure 540 prevents the retaining section 220 from continuing to move with the moving rod 200 and the separating section 230, thereby facilitating the separation of the retaining section 220 and the separating section 230.

[0077] exist Figure 14 and 16 In the illustrated embodiment, the moving rod 200 has a slot 260 arranged along its axial direction, and a stop structure 540 protrudes from the moving rod 200 and extends into the slot 260. At least one side wall of the slot 260 is located on the retaining section 220. For example, as shown in the figure, the slot 260 is located on the separating section 230, and one end face of the retaining section 220 serves as one side wall of the slot 260. This wall can act as a stop on the retaining section 220 so that when the moving rod 200 moves along its inward disengagement stroke, the stop structure 540 can abut against the wall of the slot 260.

[0078] Furthermore, to limit the opening and closing stroke of the clamping structure 100, one embodiment further includes a stroke limiting member, wherein the moving rod 200 has a limiting portion. The stroke limiting member cooperates with the limiting portion, restricting the movement of the limiting portion and the moving rod 200 within a set range, thereby limiting the limit stroke of the upper and lower ends of the reciprocating motion of the moving rod 200, and thus limiting the opening and closing stroke of the clamping structure 100. The interaction between the stroke limiting member and the limiting portion can be achieved through various limiting structures.

[0079] Please refer to Figure 10 and 16 In this embodiment, the travel limiting component includes a limiting shaft 550 and a limiting groove 250 formed along the axial direction of the moving rod 200 on the separating section 230. The limiting shaft 550 is placed within the limiting groove 250, and the two ends of the limiting groove 250 correspond to the extreme movement positions of the moving rod 200, respectively. The travel limiting component is typically fixed in place, and the limiting shaft 550 can be specifically mounted on the separating base 500 or other components.

[0080] Further, please refer to Figure 9 and 10In one embodiment, the clamping structure 100 includes a connecting portion 120. The connecting portion 120, the flexible portion 1112, and the clamping head 1111 are sequentially connected to form an integral structure. The separation base 500 is integrally formed with the connecting portion 120, for example, by means of a second tear portion 130.

[0081] Please refer to Figure 9-17 The connecting portion 120 has a locking structure 121, which is used to lock the clamping structure 100 in a clamping state. Of course, in other embodiments, the clamping structure 100 may not include the connecting portion 120, and the locking structure 121 may be directly provided on the flexible portion 1112 or other structures.

[0082] The locking structure 121 is used to lock the clamping structure 100 in a clamping state. The locking structure 121 at least prevents the clamping structure 100 from moving in the opening direction, ensuring that the clamping structure 100 remains in a clamping state. Of course, the locking structure 121 can also simultaneously prevent the clamping structure 100 from moving towards the control handle 400, which facilitates the disengagement of the clamping structure 100 from the moving rod 200. To achieve this locking effect, the locking structure 121 can lock in engagement with the moving rod 200, the clamping structure connecting structure 600, and the clamping structure 100 itself.

[0083] In one embodiment, the moving rod 200 has a locking engagement portion 210. Please refer to... Figure 6-8 The locking engagement part 210 is specifically provided on the retaining section 220. When the moving rod 200 moves along the third stroke, the locking structure 121 is located on the moving path of the locking engagement part 210; when the locking engagement part 210 moves to the locking structure 121, the two form a locking engagement, keeping the clamping structure 100 in the clamping state.

[0084] Please refer to Figure 9-17 In one embodiment, the clamping structure 100 is formed into a cylindrical structure. One end of the moving rod 200 extends into the cylindrical structure and is connected to the clamping structure 100. The locking engagement portion 210 includes an elastic body protruding towards the clamping structure 100, and the locking structure 121 includes a groove capable of engaging with the elastic body. The elastic body is located within the clamping structure 100 and is in a compressed deformation state, and the elastic body can engage with the groove under elastic force.

[0085] Please refer to the following: Figure 13-17 The third stroke of the moving rod 200 moves from the clamping structure 100 to the separating base 500. The elastic body is a spring piece integrally formed on the moving rod 200, and the spring piece is inclined towards the distal end of the clamping structure 100 along its protruding direction. Please refer to [reference needed]. Figure 13-17As shown, the inclined spring can move along the inner wall of the clamping structure 100 towards the control handle 400 when the moving rod 200 moves along the third stroke, preventing the spring from getting stuck in other parts of the clamping structure 100. When the spring moves to the slot position, the spring can be inserted into the slot under the elastic force to prevent the moving rod 200 and the clamping structure 100 from retracting and opening the clamping state.

[0086] Of course, the spring shown in the figure is only one example of the locking engagement part 210. In other embodiments, other structures that may achieve the locking function may be used, such as the locking method of clamping arm 110 or moving rod 200 and sleeve 140 disclosed in the prior art.

[0087] To more stably lock the clamping structure 100, in one embodiment, there are two or more locking structures 121 and locking mating parts 210 (two are shown in the figure). To ensure even force distribution, in one embodiment, the locking structures 121 are evenly distributed around the circumference of the clamping structure 100 (i.e., adjacent locking structures 121 are spaced at the same angle), and the locking mating parts 210 are positioned opposite to the clamping structure 100, and can also be evenly distributed around the circumference of the moving rod 200.

[0088] Further, please refer to Figure 3 , 4 In one embodiment, the retaining segment 220 is connected to the clamping structure 100 via a clamping structure connecting structure 600. The clamping structure connecting structure 600 includes at least two connecting rods 610, as shown in the figure. One end of each connecting rod 610 is connected together to the distal end of the moving rod 200 and can rotate about an axis 620. The other ends are connected to a horizontal axis on the clamping head 1111 and can also rotate about this horizontal axis. Each connecting rod 610 may be coaxial with or coaxial with the rotation center of the moving rod 200.

[0089] The linkage 610 has a Y-shaped structure, designed to effectively transmit the pushing and pulling forces of the moving rod 200 to the clamping head 1111, thereby controlling the opening and closing of the clamping head 1111. For example, in... Figure 3 In the illustrated embodiment, when the moving rod 200 moves upward (i.e., towards the distal end of the clamping structure 100), the clamping structure 100 can be controlled to open, switching to the open state. For example... Figure 4 In the embodiment described above, when the moving rod 200 moves downward (i.e. towards the proximal end of the clamping structure 100), the clamping structures 100 can be controlled to move closer to each other and switch to a clamping state.

[0090] Because the clamping structure 100 is elastic, when it is inserted into the body of the surgical object and is in an open state, ready to clamp a target object, if it accidentally touches the surrounding tissue, the clamping structure 100 will tend to close.

[0091] To address this issue, in one embodiment of this application, the moving rod 200 is capable of reciprocating along its axial direction, for example in... Figure 3 and 4 In the middle, it moves upward and downward along its axis. The movement trajectory of the moving rod 200 has an opening self-locking position, such as... Figure 3 As shown, when the moving rod 200 is in the open self-locking position, the rotation center A of the connecting rod 610 relative to the moving rod 200 passes through the line B connecting the rotation centers of each connecting rod 610 and the clamping arm 110, causing the clamping structure 100 to open and form a self-locking mechanism.

[0092] For details, please refer to Figure 3 As the moving rod 200 moves away from the end of the control handle 400 (i.e., the far end of the clamping structure 100), the clamping structure 100 can open in the opening direction. The rotation center A of the connecting rod 610 and the moving rod 200 can cross the line B connecting the two rotation centers between the connecting rod 610 and the clamping head 1111, thus forming a self-locking mechanism. This keeps the clamping structure 100 in the open state, preventing it from being easily closed by external force. The clamping head 1111 can only be retracted by controlling the control handle 400.

[0093] During the self-locking process, as the axial angle between the connecting rod 610 and the moving rod 200 gradually decreases, when the angle approaches 90 degrees (the axes of the connecting rod 610 and the moving rod 200 are nearly perpendicular), the connecting rods 610 on both sides are in a horizontal state, at which point the opening is at its maximum. When the clamping arm 110 encounters an inward external force, it tends to close. At this time, the force of the connecting rod 610 is transmitted to the moving rod 200 in the opposite direction. However, since the connecting rods 610 on both sides are in a horizontal state, the forces cancel each other out, and the downward force transmitted to the moving rod 200 is almost zero. This structure ensures that the axial angle between the connecting rod 610 and the moving rod 200 is less than 90 degrees. Therefore, in the direction of the resultant force, the moving rod 200 is hindered by the upper stop point of the central axis and cannot continue to move upward. Thus, a self-locking effect can be achieved where the clamping arm 110 cannot close. The moving rod 200 can be manually controlled to move downward, changing the axial angle between the connecting rod 610 and the moving rod 200. When the angle is greater than 90 degrees, the self-locking can be released, achieving closure.

[0094] Of course, the clamping body connection structure 600 can also be connected using other structures, such as the various connection methods of the clamping arm 110 and the pull rod disclosed in the prior art.

[0095] Further, please refer to Figure 3 , 4In one embodiment, as described in points 9 and 10, the flexible portion 1112 is a semi-cylindrical structure, which can be formed into a cylindrical structure when the clamping structure 100 is closed. This semi-cylindrical shape refers to a non-complete cylindrical shape; it is not necessarily half of the cylindrical structure, but can also be one-third of the entire cylindrical structure or other sizes. Furthermore, in other embodiments, the flexible portion 1112 can also be other structures, such as a sheet, and is not limited to this semi-cylindrical structure.

[0096] This gripper structure is designed to firmly grasp the target object, for example in... Figure 3 and 4 In the case where there are two sets of clamping arms 110, the two clamping arms 110 are arranged opposite each other, and when they are as follows... Figure 4 When the object is closed (in a clamping state), it can grasp the target object. In other embodiments, when there are different numbers of clamping arms 110, they may have different gripper structures. For example, when there are three clamping arms 110, the three clamping arms 110 can be arranged in a triangle to grasp the target object.

[0097] The clamping head 1111 has higher hardness and resistance to bending deformation than the flexible portion 1112, ensuring a better gripping effect for the clamping arm 110 on the target object. The bending deformation of the flexible portion 1112 is achieved through structural deformation. For example, it can be achieved by providing a shrinkage slit on the flexible portion 1112, by varying the material thickness of the flexible portion 1112, or by selecting a more easily deformable material. Other structural methods are also possible. This bending deformation of the flexible portion 1112 is reversible; that is, the flexible portion 1112 is elastic and can spring back to its original position when the external force is removed, thus allowing for repeated bending deformation.

[0098] In the embodiment of the clamping structure 100 described above, the sleeve 140 in the existing structure is omitted. The clamping structure 100 is directly driven by the moving rod 200, and the opening and closing of the clamping structure 100 is achieved by combining the deformation state of the flexible portion 1112. Since the sleeve 140 is no longer used to restrict the clamping arm 110, the clamping arm 110 deforms starting from the flexible portion 1112, and its deformation area is closer to the bottom of the entire clamping structure 100. Therefore, under the same opening requirement, the length of the clamping structure 100 is shorter than the combination of the clamping arm 110 and the sleeve 140 in the prior art. At the same length, the clamping structure 100 can open to a larger angle than the combination of the clamping arm 110 and the sleeve 140 in the prior art, making it easier to grip the target object's tissue. Furthermore, the structure of the clamping structure 100 avoids the part fitting clearance required for shaft-hole mating or sliding displacement, thus resulting in higher bending repeatability of the clamping arm 110.

[0099] Moreover, compared to the multi-part assembly structure of existing hemostatic clips (or tissue clips), the clamping structure 100 is simpler, requires less assembly, significantly reduces costs, and offers higher control precision. Similarly, the overall length of the clamping structure 100 is shorter than that of existing hemostatic clips (or tissue clips). Because the inner diameter of the endoscopic instrument channel is very limited, this shorter clamping structure 100 allows for easier passage through the endoscopic instrument channel.

[0100] Furthermore, as described above, the bending deformation of the bendable portion 1112 is achieved through its integral structure. Please refer to... Figure 3 and 4 In some embodiments, the end of the clamping structure 100 where the clamping head 1111 is located is the distal end, and the end opposite to the clamping head 1111 is the proximal end. The direction from the proximal end to the distal end of the clamping structure 100 is the longitudinal direction of the clamping structure 100. To achieve this deformable structure, the deformable structure includes a plurality of first contraction slits 1113, which are arranged sequentially along the longitudinal direction.

[0101] In one embodiment, such as Figure 4 As shown, the clamping structure 100 remains in the clamping state in the initial state, the first contraction slots 1113 remain in the initial state, and the flexible portion 1112 does not deform. Figure 3 As shown, when the clamping structure 100 needs to be opened, the flexible part 1112 deforms outward, and the first contraction slit 1113 contracts and deforms, thereby causing the outer side of the flexible part 1112 (the side of the clamping arms 110 that are opposite to each other) to contract, so that the entire clamping head 1111 opens.

[0102] Please refer to Figure 3 and 4 In one embodiment, the first contraction joint 1113 extends circumferentially around the flexible portion 1112. The first contraction joints 1113 are arranged in parallel. Of course, the first contraction joints 1113 can be arranged in other shapes besides being parallel to each other. By arranging the first contraction joints 1113 uniformly in parallel along the circumference of the flexible portion 1112, the bending deformation direction of each first contraction joint 1113 can be unified, making the bending deformation of the clamping structure 100 smoother and more stable.

[0103] Further, please refer to Figure 1 and 2Regarding the transmission assembly 300, the sleeve assembly 310 typically includes a spring support sleeve 311, in which the transmission element 320 (e.g., a traction control line) is disposed. The moving rod 200 can be fixedly connected to the transmission element 320 via a reducing adapter 321 or other structure. An adapter tube 312 is fixedly disposed outside the spring support sleeve 311, which is rotatably connected to the rotating seat 700. A clamping structure 100 is mounted on the rotating seat 700, allowing the entire clamping structure 100 to rotate relative to the transmission assembly 300 along with the rotating seat 700.

[0104] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. An insertable tissue clamping device, characterized in that, include: A clamping structure, the clamping structure including at least two clamping arms, the clamping arms being used to clamp a target object; A separation base, wherein the separation base is detachably connected to the clamping structure or is an integrally formed structure, and the separation base has a stop structure; The moving rod is a one-piece molded structure having a retaining section and a separating section, which are connected as a one-piece molded structure by at least one first tear; the moving rod is movably disposed and connected to the clamping structure, and the clamping arm opens and closes based on the position change of the moving rod; one end of the moving rod extends into the clamping structure, the retaining section has an elastic body protruding toward the clamping structure, the clamping structure includes a groove capable of engaging with the elastic body, and the elastic body is located within the clamping structure; The moving rod has a first stroke, a second stroke, and a third stroke. In the first stroke, the moving rod drives the clamping arm to open. In the second stroke, the moving rod drives the clamping arm to move to a clamping state to clamp the target object. In the third stroke, the clamping arm remains in the clamping state, and the stop structure is located on the movement path of the retaining section to prevent the retaining section from moving with the separating section, causing the retaining section and the separating section to break at the first tear. In the first stroke, the elastic body is in a state of compression deformation. In the third stroke, the elastic body can engage with the slot under the action of elastic force to keep the clamping structure in the clamping state.

2. The insertable tissue clamping device as described in claim 1, characterized in that, The moving rod has a slot arranged along its axial direction, at least one side of the slot wall is located on the retaining section, and the stop structure protrudes toward the moving rod and extends into the slot to abut against the retaining section when the moving rod moves along the third stroke.

3. The insertable tissue clamping device as described in claim 1, characterized in that, The separation base is provided with a travel limiter, and the separation section has a limiting part. The travel limiter cooperates with the limiting part, and the travel limiter restricts the movement of the limiting part and the moving rod within a set range.

4. The insertable tissue clamping device as described in claim 3, characterized in that, The travel limiting component includes a limiting shaft, and the limiting part is a limiting groove opened along the axial direction of the moving rod. The limiting shaft is placed in the limiting groove, and the two ends of the limiting groove correspond to the extreme movement positions of the moving rod, respectively.

5. The insertable tissue clamping device as described in claim 1, characterized in that, The end of the retained section opposite to the separated section has a concave region, and the first tear portion is located within the concave region.

6. The insertable tissue clamping device as described in claim 1, characterized in that, The moving rod has a cylindrical structure, and there are at least two first tear portions distributed circumferentially around the moving rod.

7. The insertable tissue clamping device as described in claim 1, characterized in that, The elastic body is a spring sheet integrally formed on the moving rod, and the spring sheet is inclined towards the distal end of the clamping structure along its convex direction.

8. The insertable tissue clamping device as described in claim 1, characterized in that, The clamping structure includes at least two clamping arms connected to each other. Each clamping arm includes a clamping head and a flexible portion, which are connected together. The moving rod is connected to the clamping arm. The clamping arms are arranged in a claw-like structure to clamp the target object. The flexible portion has a deformable structure that can be bent in the closing direction of the clamping structure and / or in the opening direction of the clamping structure.

9. A moving rod of an insertable tissue clamping device, characterized in that, The moving rod is a one-piece molded structure, having a retaining section and a separating section, which are connected by at least one first tear to form a one-piece molded structure; the retaining section is used to connect with the clamping structure, and the retaining section has a stop portion that can cooperate with the stop structure of the separating base; the retaining section has an elastic body that protrudes toward the clamping structure, and the elastic body is used to lock with the clamping structure, and the elastic body is inclined toward the side where the retaining section is located along its protruding direction.

10. The motion lever as described in claim 9, characterized in that, The moving rod has a slot arranged along its axial direction for insertion of the stop structure of the separation base, and at least one side wall of the slot is located on the retention section.

11. The motion lever as described in claim 9, characterized in that, The end of the retained section opposite to the separated section has a concave region, and the first tear portion is located within the concave region.

12. The motion lever as described in claim 9, characterized in that, The moving rod has a limiting part, which is used to cooperate with the travel limiting member on the insertable tissue clamping device to restrict the movement of the moving rod within a set range.

13. The motion lever as described in claim 12, characterized in that, The limiting part is a limiting groove opened along the axial direction of the moving rod, and the two ends of the limiting groove correspond to the extreme movement positions of the moving rod.

14. The motion lever as described in claim 9, characterized in that, The moving rod has a cylindrical structure, and there are at least two first tear portions distributed circumferentially around the moving rod.

Images