Clamping device for clamping target tissue

Abstract

The present disclosure describes a clamping device for clamping a target tissue, comprising a main body part, a first jaw assembly, a second jaw assembly and a traction assembly, the main body part extends along a first direction and has a proximal end close to the target tissue, the first jaw assembly is rotatably arranged at the proximal end of the main body part, the second jaw assembly is arranged at the proximal end of the main body part, the traction assembly is connected to the first jaw assembly, the traction assembly is movable along the first direction in response to an external force, and applies a torque around the main body part to the first jaw assembly to control the opening and closing of the first jaw assembly and the second jaw assembly. According to the present disclosure, a clamping device for clamping a target tissue can be provided, which can keep the target tissue stable.

Description

Technical Field

[0001] This disclosure relates to the biomedical engineering industry, specifically to a clamping device for holding target tissues. Background Technology

[0002] The meniscus is a C-shaped soft tissue located in the knee or temporomandibular joint. It is primarily composed of fibrocartilage, has a smooth surface, and possesses high resilience, thus cushioning joint pressure and reducing joint vibration. However, the meniscus is also susceptible to injury, especially during activities that exert significant external impact on the joint.

[0003] Currently, meniscus tissue is generally repaired through meniscus repair surgery. Meniscus repair surgery is a procedure that uses a suture needle with sutures to puncture the meniscus tissue. During the meniscus repair surgery, the suture needle with sutures is repeatedly punctured in the area to be sutured on the meniscus tissue, thereby suturing the meniscus tissue based on the sutures.

[0004] However, during the process of puncturing the meniscus tissue into the area to be sutured, the surface of the meniscus tissue is relatively smooth, which often causes it to slide undesirably relative to the suture needle, resulting in the puncture area not being the desired area to be sutured. Summary of the Invention

[0005] This disclosure is made in view of the above-mentioned state of the prior art, and its purpose is to provide a clamping device for holding a target tissue in a stable manner.

[0006] Therefore, this disclosure provides a clamping device for clamping target tissue, including a main body, a first claw assembly, a second claw assembly, and a traction assembly. The main body extends along a first direction and has a proximal end close to the target tissue. The first claw assembly is rotatably disposed at the proximal end of the main body, and the second claw assembly is disposed at the proximal end of the main body. The traction assembly is connected to the first claw assembly and is movable along the first direction in response to an external force, and applies a torque to the first claw assembly to rotate about the main body, thereby controlling the opening and closing of the first claw assembly and the second claw assembly.

[0007] In the clamping device disclosed herein, a first claw assembly is rotatably disposed near the proximal end of the target tissue, and a second claw assembly is also disposed near the proximal end of the target tissue. A traction assembly moves in response to an external force and applies a torque to the first claw assembly to control the opening and closing of the first and second claw assemblies. In this configuration, by adjusting the direction or magnitude of the external force applied to the traction assembly, the magnitude of the torque applied by the traction assembly to the first claw assembly around the main body can be controlled. This allows for precise control of the opening and closing angles of the first and second claw assemblies and the clamping force, thereby stabilizing the target tissue. Furthermore, controlling the opening and closing of the clamping device based on the torque applied by the traction assembly to the first claw assembly in response to an external force ensures that the first claw assembly maintains a certain stability during rotation due to the torque, thus improving the stability of the clamping device in holding the target tissue.

[0008] Additionally, in the clamping device disclosed herein, optionally, the first claw assembly includes a first arm that cooperates with the second claw assembly to clamp the target tissue. The portion of the first arm that contacts the target tissue has a first abutment portion, which includes a serrated segment. In this case, the surface portion of the target tissue is typically smooth. By including a serrated segment in the first abutment portion, the surface friction when the first abutment portion contacts the surface portion of the target tissue can be increased, thereby reducing the tendency of the target tissue to slide and improving the stability of the clamping device in clamping the target tissue.

[0009] Additionally, in the clamping device disclosed herein, optionally, the first claw assembly includes a connecting portion, the connecting portion including a first groove having an angle with the first direction, and the traction assembly includes a sliding portion, the sliding portion abutting against the first groove and being slidable relative to the first groove. In this case, when the sliding portion slides along the first direction in the first groove, through the abutting relationship between the sliding portion and the first groove, the traction assembly can apply a torque to the first claw assembly to rotate around the main body, thereby driving the first claw assembly to rotate accordingly and causing the angle between the first groove and the first direction to change (that is, driving the first claw assembly to rotate along a direction closer to the target tissue or away from the target tissue), thus facilitating the clamping device to clamp the target tissue.

[0010] Additionally, in the clamping device disclosed herein, optionally, the traction assembly further includes an adjusting rod connected to the sliding portion, the adjusting rod extending along the first direction. In this case, the sliding portion can be controlled to slide relative to the first groove along the first direction by moving the adjusting rod along the first direction, thereby improving the ease of operation of the traction assembly. Simultaneously, the magnitude of the torque applied to the first claw assembly can be controlled by adjusting the external force applied to the traction assembly based on the adjusting rod, thereby facilitating the control of the opening and closing of the traction assembly.

[0011] Additionally, in the clamping device disclosed herein, optionally, the clamping device further includes a housing fixedly connected to the main body, the housing cooperating with the main body to form a cavity for accommodating the traction assembly. In this case, the adjusting rod can be protected when the clamping device is close to the target tissue, while reducing the negative impact of the surrounding environment of the target tissue on the movement of the adjusting rod (e.g., other substances in the surrounding environment of the target tissue may hinder the movement of the adjusting rod). Simultaneously, by providing the cavity, the movement path of the adjusting rod can be restricted, thereby facilitating control of the clamping device during clamping operations.

[0012] Additionally, in the clamping device disclosed herein, optionally, the housing has a second groove extending along the first direction, the sliding portion abutting against the second groove, the second groove cooperating with the first groove to restrict the movement of the sliding portion along the first direction. In this case, by providing a second groove extending along the first direction, the sliding path of the sliding portion can be restricted in the first direction, thereby reducing the offset of the sliding portion in other directions during sliding, thus making the clamping device more stable when clamping the target tissue.

[0013] Furthermore, in the clamping device disclosed herein, optionally, the first arm is arc-shaped and bent in a direction away from the main body. In this case, since the surface of the target tissue has curved portions, by setting the first arm to be arc-shaped and bent in a direction away from the main body, the fit between the first claw assembly and the curved portions in the target tissue can be improved, thereby improving the stability of clamping. In addition, damage to the target tissue can be reduced to a certain extent.

[0014] Additionally, in the clamping device disclosed herein, optionally, the radius of curvature of the curved surface of the first arm near the second claw assembly is greater than a preset value. In this case, since a larger radius of curvature results in a smaller degree of curvature, the curved surface of the first arm near the second claw assembly can be made as smooth as possible. This reduces the slippage tendency of the target tissue while adapting to it, thereby enabling more stable clamping of the target tissue.

[0015] Additionally, in the clamping device disclosed herein, optionally, the second claw assembly is fixedly connected to the main body. In this case, compared to the method where the first arm and the second claw assembly move simultaneously in a direction close to the target tissue to clamp the target tissue, the fixed connection of the second claw assembly to the main body allows the operator to use the second claw assembly as a reference to position the target tissue and then move the first arm to clamp the target tissue, thereby improving the accuracy of the clamping device in clamping the target tissue.

[0016] Furthermore, in the clamping device disclosed herein, optionally, the second claw assembly extends along the first direction toward the target tissue or along the direction toward the first arm. In this case, the angle between the first arm and the second claw assembly can be minimized. Since the smaller the angle between the first arm and the second claw assembly, the greater the clamping force of the first arm and the second claw assembly on the target tissue, the clamping force of the first arm and the second claw assembly on the target tissue can be improved, thereby improving the clamping stability. At the same time, it can reduce the situation where it is inconvenient to clamp the target tissue due to an excessively large angle between the first arm and the second claw assembly.

[0017] According to this disclosure, a clamping device for holding a target tissue can be provided to stabilize the target tissue. Attached Figure Description

[0018] This disclosure will now be explained in further detail by way of example only with reference to the accompanying drawings.

[0019] Figure 1 This is a diagram illustrating an application scenario of the clamping device involved in the examples of this disclosure.

[0020] Figure 2A This is a schematic diagram illustrating the structure of the clamping device involved in the example of this disclosure; Figure 2B This is an exploded schematic diagram of the clamping device involved in the example of this disclosure.

[0021] Figure 3 This is a schematic diagram illustrating the structure of the first claw assembly involved in the example of this disclosure.

[0022] Figure 4A This is a schematic diagram showing the sliding part relative to the first groove in the example of this disclosure; Figure 4B This is another schematic diagram showing the sliding part relative to the first groove involved in the example of this disclosure.

[0023] Figure 5 This is a schematic diagram illustrating another structure of the clamping device involved in the example of this disclosure.

[0024] Figure 6 This is a schematic diagram illustrating the force analysis of the sliding part involved in the example of this disclosure.

[0025] Figure 7 This is a schematic diagram illustrating the structure of the housing involved in the example of this disclosure.

[0026] Figure 8A This is a bottom view showing the clamping device involved in the example of this disclosure; Figure 8B It shows the clamping device along Figure 8A The cross-sectional view of B-B' in the diagram.

[0027] Figure 9 This is a schematic diagram illustrating the interaction between the puncture assembly and the clamping device as described in the examples of this disclosure.

[0028] Figure 10 This is a schematic diagram illustrating the structure of the puncture assembly involved in the example of this disclosure. Detailed Implementation

[0029] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same components, and repeated descriptions are omitted. Furthermore, the drawings are merely schematic diagrams, and the proportions of the components or the shapes of the components may differ from actual figures.

[0030] It should be noted that the terms "comprising" and "having" and any variations thereof in this disclosure, such as a process, method, system, product, or device that includes or has a series of steps or units, are not necessarily limited to those steps or units that are explicitly listed, but may include or have other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or devices.

[0031] It should be noted that in this article, relative position and direction terms such as "above", "facing upward", "below", "facing downward", "up and down direction", "left side", "facing left side", "left side", "facing left side", "right side", "facing right side", "right side", "facing right side", "left and right direction", "front", "facing forward", "back", "facing backward", and "front and back direction" are used with reference to the usual operating posture and should not be considered as restrictive.

[0032] This disclosure relates to a clamping device for clamping target tissue. It also relates to a puncture assembly for carrying sutures and puncturing target tissue to allow the sutures to pass through the tissue. This puncture assembly can cooperate with the clamping device to suture the target tissue. Specifically, the puncture assembly can carry sutures to puncture the target tissue clamped by the clamping device. Thus, the sutures can pass through the target tissue clamped by the clamping device to suture the target tissue.

[0033] The clamping devices involved in this disclosure may also be referred to as clamping equipment, tissue fixation devices, soft tissue clamps, or meniscus repair forceps, etc. It should be noted that these names are used to indicate the clamping device used to clamp the target tissue according to this disclosure and should not be construed as limiting. The puncture components involved in this disclosure may also be referred to as suture components, penetration components, tissue penetrators, or needle components, etc.

[0034] The target tissues involved in this disclosure include, but are not limited to, at least one of the following: meniscus, anterior cruciate ligament of the knee joint, or lumbar intervertebral disc. The following description uses the meniscus as an example to illustrate the clamping device and puncture assembly involved in this disclosure. It should be noted that, for other target tissues, those skilled in the art can perform analysis on other target tissues with minor modifications.

[0035] The clamping device and puncture assembly involved in this disclosure will be described in detail below with reference to the accompanying drawings.

[0036] Figure 1 This is a diagram illustrating an application scenario of the clamping device 1 involved in the example of this disclosure.

[0037] See in some examples Figure 1 In the scenario, the operator can first locate the target tissue 2, then bring the proximal end of the clamping device 1 closer to the target tissue 2, and finally control the clamping device 1 to open and close to clamp or release the target tissue 2.

[0038] Figure 2A This is a schematic diagram showing the structure of the clamping device 1 involved in the example of this disclosure; Figure 2B This is an exploded schematic diagram showing the clamping device 1 involved in the example of this disclosure.

[0039] See in some examples Figure 2A and Figure 2B The clamping device 1 may include a main body 11.

[0040] In some examples, the clamping device 1 may include a first claw assembly 10, which may be disposed on the main body 11. In some examples, the clamping device 1 may include a second claw assembly 12, which may be disposed on the main body 11.

[0041] In some examples, the first claw assembly 10 can cooperate with the second claw assembly 12 to clamp the target tissue 2.

[0042] In some examples, the clamping device 1 may include a traction component 13, which may be connected to the first claw assembly 10. In some examples, the traction component 13 may be used to control the opening and closing of the first claw assembly 10 and the second claw assembly 12. Thus, the target tissue 2 can be clamped or released based on the clamping device 1.

[0043] In some examples, the main body 11 may have a proximal end close to the target tissue 2. In some examples, the main body 11 may have a distal end far from the target tissue 2.

[0044] In some examples, the main body 11 may extend along a first direction. In some examples, the first direction may be any direction away from the target tissue 2. In this disclosure, as... Figure 1 As shown, the first direction may include direction D1 and direction D2. "Moving along the first direction" can mean moving along direction D1 and direction D2, and "extending along the first direction" can mean extending along direction D1 and direction D2. For ease of description, the first direction will be used as the horizontal direction in the following description of this disclosure.

[0045] In some examples, the main body 11 may be elongated. In some examples, the length direction of the main body 11 may be the same as the first direction.

[0046] In some examples, the first claw assembly 10 may be disposed at the proximal end of the main body portion 11. In some examples, the first claw assembly 10 may be rotatably disposed at the proximal end of the main body portion 11. In some examples, the first claw assembly 10 may rotate in a direction close to or away from the target tissue 2.

[0047] Figure 3 This is a schematic diagram showing the structure of the first claw assembly 10 involved in the example of this disclosure.

[0048] In some examples, the first claw assembly 10 may include a first arm 100, which can be used to apply force to the target tissue 2. In some examples, the first arm 100 may cooperate with the second claw assembly 12 to grip the target tissue 2. In some examples, the first arm 100 may be in partial or complete contact with the target tissue 2.

[0049] In some examples, the first arm 100 may extend in a direction close to the target tissue 2. In some examples, the first arm 100 may rotate with the first claw assembly 10 in a direction close to or away from the target tissue 2.

[0050] In some examples, the first arm 100 may have a first abutment portion 101. Specifically, the portion of the first arm 100 that contacts the target tissue 2 may have a first abutment portion 101. In some examples, the first abutment portion 101 may include serrated segments. In this case, the surface portion of the target tissue 2 is typically smooth. By including serrated segments in the first abutment portion 101, the surface friction when the first abutment portion 101 contacts the surface portion of the target tissue 2 can be increased, thereby reducing the slippage tendency of the target tissue 2 and improving the stability of the clamping device 1 in clamping the target tissue 2.

[0051] In other examples, the first abutment portion 101 may also include a non-serrated segment. In some examples, the non-serrated segment may refer to any portion other than the serrated segment. This minimizes damage to the target tissue 2.

[0052] In some examples, a serrated segment may include multiple serrations.

[0053] In other examples, the portion of the first arm 100 that does not contact the target tissue 2 may also be a serrated segment. In other words, the serrated segment may partially or completely cover the first arm 100. This allows the first arm 100 to better adapt to target tissues 2 of different sizes.

[0054] In some examples, the first arm 100 may be arc-shaped. In some examples, the first arm 100 may be bent away from the main body 11. In this case, since the surface of the target tissue 2 has a curved portion, by setting the first arm 100 to be arc-shaped and bent away from the main body 11, the fit between the first claw assembly 10 and the curved portion in the target tissue 2 can be improved, thereby improving the stability of clamping. In addition, damage to the target tissue 2 can be reduced to some extent.

[0055] In some examples, the radius of curvature of the surface of the first arm 100 near the second claw assembly 12 can be greater than a preset value. In other words, the radius of curvature of the surface of the first arm 100 near the target tissue 2 can be greater than a preset value. In this case, since the larger the radius of curvature of the surface, the smaller the curvature of the surface, the smoother the surface of the first arm 100 near the second claw assembly 12 can be, thereby minimizing the sliding tendency of the target tissue 2 while adapting to it, and thus enabling more stable clamping of the target tissue 2.

[0056] In some examples, the preset value may refer to the radius of curvature of the surface of the first arm 100 near the second claw assembly 12, which can be preset. In other words, the preset value can be adjusted based on the structure of the target tissue 2.

[0057] In some examples, the preset value can be from R41-3 mm to R41+3 mm.

[0058] In other examples, the radius of curvature of the surface of the first arm 100 near the second claw assembly 12 may also be equal to a preset value.

[0059] See in some examples Figure 3 The first claw assembly 10 may include a connecting portion 102. The connecting portion 102 can be used for rotatable connection with the main body portion 11.

[0060] In some examples, the connecting portion 102 may have a first through hole for accommodating the rotating shaft 15, and the first through holes may be disposed opposite to each other. In some examples, the connecting portion 102 may be rotatably connected to the main body portion 11 based on the rotating shaft 15.

[0061] In other examples, the connecting part 102 may also be rotatably connected to the main body 11 based on a hinge.

[0062] In some examples, the connecting portion 102 may include a first groove 103 (see Figure 3 The first slide groove 103 may be disposed opposite to the connecting portion 102. In some examples, the first slide groove 103 may be used to cooperate with the traction assembly 13 to control the rotation of the first claw assembly 10. In some examples, the traction assembly 13 may be connected to the first claw assembly 10.

[0063] In some examples, the traction component 13 can move in a first direction in response to an external force. In some examples, the external force can be a pulling force, a pushing force, or a magnetic force that causes the traction component 13 to move. In some examples, the direction of the external force can be the same as or parallel to the first direction.

[0064] In other examples, the direction of the external force may differ from the first direction. In this case, the external force may have components decomposed along the first direction.

[0065] In some examples, the traction assembly 13 can move in a first direction in response to an external force and can apply a torque to the first claw assembly 10. In some examples, the torque can be adjusted by changing the direction and / or magnitude of the external force.

[0066] In some examples, the traction assembly 13 can apply a torque to the first claw assembly 10 to rotate about the main body 11. Thus, the rotation of the first claw assembly 10 about the main body 11 can be controlled based on the traction assembly 13.

[0067] In some examples, the traction assembly 13 can move in a first direction in response to an external force and can apply a torque to the first claw assembly 10 to rotate about the body 11 in order to control the opening and closing of the first claw assembly 10 and the second claw assembly 12.

[0068] In this disclosure, the first claw assembly 10 is rotatably positioned near the proximal end of the target tissue 2, and the second claw assembly 12 is also positioned near the proximal end of the target tissue 2. The traction assembly 13 moves in response to an external force and applies a torque to the first claw assembly 10 to control the opening and closing of the first claw assembly 10 and the second claw assembly 12. In this configuration, by adjusting the direction or magnitude of the external force applied to the traction assembly 13, the magnitude of the torque applied by the traction assembly 13 to the first claw assembly 10 around the main body 11 can be controlled. This allows for precise control of the opening and closing angles of the first claw assembly 10 and the second claw assembly 12, as well as the clamping force, thereby stabilizing the target tissue 2. Furthermore, by controlling the opening and closing of the clamping device 1 based on the torque applied by the traction assembly 13 to the first claw assembly 10 in response to an external force, the first claw assembly 10 maintains a certain stability during rotation due to the influence of the torque, thereby improving the stability of the clamping device 1 in clamping the target tissue 2.

[0069] In some examples, the traction assembly 13 may include a sliding portion 130 (see...) Figure 2B In some examples, the sliding portion 130 can move along a first direction. In some examples, the traction assembly 13 can be slidably connected to the first claw assembly 10. In some examples, the traction assembly 13 and the first claw assembly 10 can be connected based on the abutment relationship between the sliding portion 130 of the traction assembly 13 and the first groove 103 of the first claw assembly 10.

[0070] Figure 4A This is a schematic diagram showing the sliding portion 130 relative to the first groove 103 in the example of this disclosure; Figure 4B This is another schematic diagram showing the sliding portion 130 relative to the first groove 103 involved in the example of this disclosure.

[0071] See in some examples Figure 4A The sliding portion 130 can abut against the first slide groove 103. In some examples, the sliding portion 130 can be a pin. In some examples, the size of the sliding portion 130 can match the size of the first slide groove 103. Specifically, the geometry of the sliding portion 130 can match the depth and width of the first slide groove 103. In some examples, matching can mean that the size of the sliding portion 130 is less than or equal to the size of the first slide groove 103. In some examples, the sliding portion 130 can abut against the opposing first slide grooves 103.

[0072] In some examples, the sliding part 130 can slide relative to the first groove 103.

[0073] In some examples, the first groove 103 may have an angle with the first direction (see...). Figure 4A In some examples, the included angle can range from 20 degrees to 45 degrees. For example, the included angle can be 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees, or 45 degrees.

[0074] See in some examples Figure 4A and Figure 4B The angle between the first groove 103 and the first direction can change as the sliding part 130 moves along the first direction. Specifically, when the sliding part 130 moves along the first direction (direction D1), the interaction between the first groove 103 and the sliding part 130 causes the angle between the first groove 103 and the first direction to gradually decrease; when the sliding part 130 moves along the first direction (direction D2), the interaction between the first groove 103 and the sliding part 130 causes the angle between the first groove 103 and the first direction to gradually increase. In this case, when the sliding part 130 slides along the first direction in the first groove 103, the traction component 13 can apply a torque to the first claw component 10 to rotate around the main body 11 through the abutment relationship between the sliding part 130 and the first groove 103. This can drive the first claw component 10 to rotate accordingly and change the angle between the first groove 103 and the first direction (that is, it can drive the first claw component 10 to rotate along the direction closer to the target tissue 2 or away from the target tissue 2), thereby facilitating the clamping device 1 to clamp the target tissue 2.

[0075] In some examples, the first groove 103 can be provided in the form of a countersunk hole. In this case, the influence of other substances (e.g., tissue fluid, etc.) in the surrounding area of ​​the target tissue 2 on the sliding part 130 can be reduced, thereby making the contact between the sliding part 130 and the first groove 103 more stable.

[0076] In some examples, the traction assembly 13 may also include an adjusting rod 131 (see Figure 2B The adjusting rod 131 can be connected to the sliding part 130. In some examples, the adjusting rod 131 can extend along a first direction. In this case, the sliding part 130 can be controlled to slide relative to the first slide groove 103 along the first direction by moving the adjusting rod 131 along the first direction, which can improve the ease of operation of the traction assembly 13. At the same time, the magnitude of the torque applied to the first claw assembly 10 can be controlled by controlling the external force applied to the traction assembly 13 based on the adjusting rod 131, thereby facilitating the opening and closing of the traction assembly 13.

[0077] In some examples, the second claw assembly 12 may be fixedly connected to the main body 11. In this case, compared to the method where the first arm 100 and the second claw assembly 12 move simultaneously in a direction close to the target tissue 2 to clamp the target tissue 2, the fixed connection of the second claw assembly 12 to the main body 11 makes it easier for the operator to use the second claw assembly 12 as a reference to position the target tissue 2 and then move the first arm 100 to clamp the target tissue 2, thereby improving the accuracy of the clamping device 1 in clamping the target tissue 2.

[0078] In some examples, the second claw assembly 12 may have a second abutment portion 120 (see...) Figure 2A The second abutment portion 120 can be the part of the second claw assembly 12 that contacts the target tissue 2.

[0079] In some examples, the second abutment 120 may be located in the direction along which the first abutment 101 is projected onto the target tissue 2. In this case, since different target tissues 2 have different sizes, when the second abutment 120 contacts the target tissue 2, the serrated segments can contact the target tissue 2 simultaneously as much as possible, thereby improving the stability of the clamping device 1 in clamping the target tissue 2.

[0080] Figure 5 This is a schematic diagram illustrating another structure of the clamping device 1 involved in the example of this disclosure.

[0081] In some examples, the second claw assembly 12 may extend along a first direction (direction D2) toward the target tissue 2. See also [other examples]. Figure 5 The second claw assembly 12 can extend in a direction close to the first arm 100. In this case, the angle between the first arm 100 and the second claw assembly 12 can be minimized. Since the smaller the angle between the first arm 100 and the second claw assembly 12, the greater the clamping force of the first arm 100 and the second claw assembly 12 on the target tissue 2, the clamping force of the first arm 100 and the second claw assembly 12 on the target tissue 2 can be improved, thereby improving the clamping stability. At the same time, it can reduce the situation where it is inconvenient to clamp the target tissue 2 due to an excessively large angle between the first arm 100 and the second claw assembly 12.

[0082] Figure 6 This is a schematic diagram illustrating the force analysis of the sliding part 130 involved in the example of this disclosure.

[0083] See in some examples Figure 6 The relationship between the force exerted by the sliding part 130 on the connecting part 102 and the external force can satisfy the formula:

[0084] F1=F / sinA

[0085] Wherein, F1 is the force exerted by the sliding part 130 on the connecting part 102, F is the external force, and A is the angle between the first slide groove 103 and the first direction. The torque of the clamping force relative to the rotating shaft 15 and the torque of the force exerted by the sliding part 130 on the connecting part 102 relative to the rotating shaft 15 can be balanced. In this case, the clamping force can be controlled more accurately by controlling the external force.

[0086] In some examples, the clamping angle may refer to the angle between the first arm 100 and the second claw assembly 12, and the clamping force may refer to the force applied by the first arm 100 to the target tissue 2 for clamping the target tissue 2.

[0087] In some examples, as the angle between the first slide 103 and the first direction gradually decreases due to the rotation of the first arm 100 closer to the target tissue 2, the clamping angle can also gradually decrease. In this case, the force exerted by the sliding part 130 on the connecting part 102 can gradually increase, thereby improving the clamping force of the first arm 100 on the target tissue 2, which is beneficial for the clamping device 1 to stably clamp the target tissue 2.

[0088] Figure 7 This is a schematic diagram illustrating the structure of the housing 14 involved in the example of this disclosure.

[0089] See in some examples Figure 7 The clamping device 1 may also include a housing 14.

[0090] In some examples, the housing 14 may be fixedly connected to the main body 11. In some examples, the housing 14 may have a second through hole 141 disposed opposite to it (see...). Figure 7 In some examples, the size of the second through hole 141 can match the size of the first through hole.

[0091] In some examples, the housing 14 may be fixedly connected to the first claw assembly 10 and the main body 11 based on the rotation axis 15.

[0092] In some examples, the housing 14 can cooperate with the main body 11 to form a cavity, which can be formed between the housing 14 and the main body 11. In some examples, the cavity can be used to accommodate the traction assembly 13. In some examples, the cavity can be used to accommodate the adjusting rod 131. In this case, the adjusting rod 131 can be protected when the clamping device 1 is close to the target tissue 2, while reducing the negative impact of the surrounding environment of the target tissue 2 on the movement of the adjusting rod 131 (e.g., other substances in the surrounding environment of the target tissue 2 may hinder the movement of the adjusting rod 131). At the same time, by providing the cavity, the movement path of the adjusting rod 131 can be restricted, thereby facilitating the control of the clamping device 1 to perform clamping operations.

[0093] In some examples, the adjusting rod 131 can be in the form of a long, thin sheet or a slender rod to be placed within the cavity. In this case, the volume of the clamping device 1 can be minimized as much as possible, allowing the clamping device 1 to better approach the target tissue 2.

[0094] In some examples, an external force along a first direction (direction D1) can be applied to the adjusting rod 131 to apply a torque to the first claw assembly 10 that rotates close to the target tissue 2. In this case, when an external force is applied to the adjusting rod 131, the direction of the external force can be aligned with the extension direction of the adjusting rod 131, thereby reducing the possibility of the adjusting rod 131 undergoing undesirable outward convex deformation different from the extension direction due to compression at both ends along the extension direction, and thus improving the clamping stability of the clamping device 1.

[0095] In some examples, the extension direction of the adjusting rod 131 can be a first direction.

[0096] In some examples, housing 14 may have a second groove 140 (see Figure 7 In some examples, the housing 14 may have a second groove 140 disposed opposite to it. In some examples, the second groove 140 may be disposed near the proximal end of the body portion 11.

[0097] In some examples, the sliding portion 130 may abut against the second slide groove 140. In some examples, the dimensions of the sliding portion 130 may match the dimensions of the second slide groove 140. Specifically, the geometry of the sliding portion 130 may match the depth and width of the second slide groove 140. In some examples, matching may mean that the dimension of the sliding portion 130 is less than or equal to the dimension of the second slide groove 140. In some examples, the sliding portion 130 may abut against the opposing second slide grooves 140.

[0098] In some examples, the sliding part 130 can slide relative to the second groove 140.

[0099] Figure 8A This is a bottom view showing the clamping device 1 according to the example of this disclosure; Figure 8B It shows the clamping device 1 along... Figure 8A The cross-sectional view of B-B' in the diagram.

[0100] See in some examples Figure 8A and Figure 8B The second groove 140 may extend along the first direction. In some examples, the second groove 140 may be used to cooperate with the first groove 103 to limit the movement of the sliding portion 130 along the first direction (see [reference]). Figure 8BIn this case, by providing a second groove 140 extending along the first direction, the sliding path of the sliding part 130 can be restricted in the first direction, thereby reducing the offset of the sliding part 130 in other directions during the sliding process, which makes the clamping device 1 more stable when clamping the target tissue 2.

[0101] In some examples, the sliding portion 130 may extend through the second groove 140 to abut against the first groove 103. Thus, the sliding portion 130 can slide relative to both the first groove 103 and the second groove 140 simultaneously.

[0102] This disclosure also relates to a puncture assembly 3, which can be used in conjunction with the aforementioned clamping device 1 to suture the target tissue 2. A detailed description is provided below with reference to the accompanying drawings.

[0103] Figure 9 This is a schematic diagram showing the puncture component 3 and the clamping device 1 involved in the example of this disclosure.

[0104] See in some examples Figure 9 The puncture component 3 can be disposed on the second claw component 12 of the clamping device 1. When the clamping device 1 clamps the target tissue 2, the puncture component 3 can puncture the target tissue 2 in response to the thrust acting on the puncture component 3.

[0105] Figure 10 This is a schematic diagram illustrating the structure of the puncture component 3 involved in the example of this disclosure.

[0106] See in some examples Figure 10 The puncture assembly 3 may have a head end 30 and a tail end 31. The head end 30 may be used to puncture the target tissue 2, and the tail end 31 may be used to combine with the main body 11.

[0107] In some examples, the puncture component 3 can be a uniform sheet-like structure. In some examples, the puncture component 3 can also be a tubular structure.

[0108] In some examples, the head end 30 may extend in a direction close to the target tissue 2. In some examples, the tail end 31 may extend in a first direction.

[0109] In some examples, the head end 30 may be arc-shaped and curved away from the main body 11. In some examples, the radius of curvature of the surface of the head end 30 may be the same as the radius of curvature of the surface of the first arm 100. Specifically, the radius of curvature of the surface of the head end 30 may be the same as the radius of curvature of the surface of the first arm 100 near the second claw assembly 12 and / or the radius of curvature of the surface of the first arm 100 near the second claw assembly 12.

[0110] In other examples, the radius of curvature of the head end 30 may be smaller than the radius of curvature of the first arm 100.

[0111] See in some examples Figure 10 The puncture assembly 3 may have a puncture portion 300 located at the head end 30 of the puncture assembly 3. In some examples, the puncture portion 300 may be configured to puncture the target tissue 2.

[0112] In some examples, see further. Figure 10 The puncture portion 300 can be a sharp, pointed structure. In other examples, the puncture portion 300 can also be a trapezoidal, angled structure.

[0113] In some examples, the puncture component 3 may have a placement portion 301 (see [reference]). Figure 10 In some examples, the placement portion 301 may be located at the head end 30 of the puncture assembly 3. In some examples, the placement portion 301 may be configured to place a suture.

[0114] In some examples, the placement portion 301 can be a notch. In some examples, the size of the notch can match the size of the suture. For example, the size of the notch can be the same as the outer diameter of the suture. In this case, the connection between the suture and the placement portion 301 can be more stable, thereby reducing the possibility of the suture falling off during puncture.

[0115] In some examples, the placement part 301 can be a notch in the shape of a "U".

[0116] In some examples, the placement part 301 can have multiple notches. For example, the placement part 301 can have two or three notches, etc.

[0117] In some examples, the placement part 301 can be two notches positioned opposite each other.

[0118] In some examples, the puncture assembly 3 can move in a first direction in response to a force acting on the tail end 31 of the puncture assembly 3. Specifically, the tail end 31 of the puncture assembly 3 can move in the first direction in response to a thrust acting on the tail end 31 of the puncture assembly 3 (i.e., a thrust in direction D2). Thus, the target tissue 2 can be punctured.

[0119] In some examples, the second claw assembly 12 may have an inner cavity for partially or completely receiving the puncture assembly 3 and an opening for allowing the puncture assembly 3 to extend freely from the inner cavity. In some examples, the opening may be located at the second abutment portion 120. In some examples, the size of the opening may match the size of the puncture assembly 3.

[0120] In some examples, the puncture assembly 3 can extend from within the second claw assembly 12 in response to a thrust acting on the puncture assembly 3. Specifically, the head end 30 of the puncture assembly 3 can extend from within the second abutment portion 120 in response to a thrust acting on the tail end 31 of the puncture assembly 3.

[0121] In some examples, the puncture component 3 may be configured to extend from the second abutment 120 to puncture the target tissue 2. In some examples, the puncture component 3 may be configured to extend from the second abutment 120 to puncture the target tissue 2, while the puncture component 3 may also reach the first abutment 101 to complete the puncture of the target tissue 2.

[0122] In some examples, after the puncture component 3 completes the puncture of the target tissue 2, the puncture component 3 can return to the second claw component 12 along the same puncture path. In some examples, the puncture path can refer to the path along which the puncture component 3 extends from the second abutment 120 to puncture the target tissue 2 and reaches the first abutment 101 to complete the puncture of the target tissue 2.

[0123] In some examples, the puncture assembly 3 can carry a suture to puncture the target tissue 2 along the puncture path. In some examples, the puncture assembly 3 can carry a suture extending from the second abutment 120 to puncture the target tissue 2 and reach the first abutment 101.

[0124] In some examples, the puncture component 3 can carry the suture back to the second claw component 12 along the same puncture path. In some examples, the suture can be pre-set in the first claw component 10. In some examples, the puncture component 3 can carry the suture pre-set in the first claw component 10 back to the second claw component 12 along the same puncture path.

[0125] While the present disclosure has been specifically described above in conjunction with the accompanying drawings and examples, it is to be understood that the foregoing description does not limit the present disclosure in any way. Those skilled in the art can make modifications and variations to the present disclosure as needed without departing from its essential spirit and scope, and all such modifications and variations shall fall within the scope of the present disclosure.

Claims

1. A clamping device for holding target tissue, characterized in that, The device includes a main body, a first claw assembly, a second claw assembly, and a traction assembly. The main body extends along a first direction and has a proximal end close to the target tissue. The first claw assembly is rotatably disposed at the proximal end of the main body, and the second claw assembly is disposed at the proximal end of the main body. The traction assembly is connected to the first claw assembly and is movable along the first direction in response to an external force, and applies a torque to the first claw assembly to rotate about the main body, thereby controlling the opening and closing of the first claw assembly and the second claw assembly. The first claw assembly includes a first arm that cooperates with the second claw assembly to clamp the target tissue. The portion of the first arm that contacts the target tissue has a first abutment portion, which includes a serrated segment. The first claw assembly includes a connecting portion, the connecting portion including a first groove having an angle with the first direction, the traction assembly including a sliding portion, the sliding portion abutting against the first groove and being slidable relative to the first groove, the sliding portion being configured such that as the angle between the first groove and the first direction gradually decreases due to the rotation of the first arm closer to the target tissue, the force exerted on the connecting portion gradually increases; The traction assembly further includes an adjusting rod connected to the sliding portion, the adjusting rod extending along the first direction, and the traction assembly configured to apply an external force consistent with the extension direction of the adjusting rod to apply a torque to the first claw assembly rotating toward the target tissue.

2. The clamping device according to claim 1, characterized in that, The clamping device also includes a housing fixedly connected to the main body, the housing and the main body cooperating to form a cavity for accommodating the traction assembly.

3. The clamping device according to claim 2, characterized in that, The housing has a second groove extending along the first direction, the sliding part abutting against the second groove, the second groove being used to cooperate with the first groove to restrict the movement of the sliding part along the first direction.

4. The clamping device according to claim 1, characterized in that, The first arm is arc-shaped and bends away from the main body.

5. The clamping device according to claim 4, characterized in that, The radius of curvature of the surface of the first arm near the second claw assembly is greater than a preset value.

6. The clamping device according to claim 1, characterized in that, The second claw assembly is fixedly connected to the main body.

7. The clamping device according to claim 1, characterized in that, The second claw assembly extends in the first direction toward the target tissue or in the direction toward the first arm.

Images