Vascular clamp

Abstract

A vascular clamp includes a clamping and separating head and a control component. The control component allows the operator to manipulate the clamping and separating head to clamp and fix the wound on the blood vessel of the target object. After clamping the wound, the clamping and separating head can be separated from the clamping and separating head, thus keeping the clamping and separating head in the target object's body while maintaining the clamped state on the wound to promote healing. Since the clamping arm requires a large closing force to clamp the two sides of the wound together, but excessive closing force can easily cause damage to the blood vessel, in this vascular clamp, the clamping head of the clamping arm has a clamping body and a flexible layer located on the outer side of the clamping body. The hardness of the clamping body is greater than that of the flexible layer. The clamping body is mainly used to ensure the strength of the clamping head and provide better closing force, while the flexible layer is used to contact the blood vessel when the clamping arm clamps the wound to reduce damage to the blood vessel from the clamping head.

Description

Technical Field

[0001] This application relates to the field of medical devices, specifically to a vascular clamp. Background Technology

[0002] With the iterative advancements in endoscopic technology, minimally invasive treatments have gradually replaced some traditional open procedures. For example, current main methods for treating gastrointestinal varicose veins include endoscopic varicose vein ligation (EVL), endoscopic sclerotherapy (EVS), and tissue glue injection. While these methods are used clinically, they have drawbacks such as complex procedures, high risk of complications (e.g., ulceration, bleeding, embolism), and high skill requirements for the operating physician. Furthermore, most existing treatments cannot achieve rapid, precise, and stable closure of varicose veins, especially in complex lesion sites.

[0003] There is currently a lack of a rapid and simple minimally invasive closure device for wound closure of blood vessels (such as veins or other blood vessels). Although minimally invasive hemostatic clipping devices have emerged in other fields, they cannot be directly applied to the scenario of vascular wound closure. Utility Model Content

[0004] This application provides a vascular clamp to demonstrate a structure that can more easily achieve vascular closure.

[0005] Based on the above objectives, one embodiment of this application provides a vascular clip, comprising:

[0006] A clamping and separating head having at least two clamping arms, each clamping arm having a clamping head for clamping and fixing a wound on a blood vessel of a target object, each clamping head having a clamping body and a flexible layer disposed on the outside of the clamping body, the hardness of the clamping body being greater than the hardness of the flexible layer, the flexible layer being used to contact the blood vessel when the clamping arm clamps the wound;

[0007] And a control component for manipulating the clamping separation head to clamp the wound surface, the control component being detachably connected to the clamping separation head so as to be detachable from the clamping separation head after the clamping separation head has clamped the wound surface.

[0008] In one embodiment, the flexible layer is a sheath structure, which is sleeved on the clamping body.

[0009] In one embodiment, the inner cavity of the sheath structure is smaller than that of the clamping body, so that the sheath structure can fit tightly onto the clamping body.

[0010] In one embodiment, the flexible layer is fixedly covered on at least a portion of the outer wall of the clamping body.

[0011] In one embodiment, the clamping body is a metal clamping body made of metal material, and / or the flexible layer is a flexible layer made of silicone or soft plastic.

[0012] In one embodiment, the clamping separation head has a linkage member and a rocker arm, and the control component has a pull member, a separable member, and a control handle for operation by the operator. The two ends of the pull member are respectively connected to the control handle and the separable member. The separable member is detachably connected to the linkage member so that the motion input by the operator can be transmitted to the separable member and the linkage member through the pull member. The linkage member is connected to the corresponding clamping arm through the corresponding rocker arm so as to drive the clamping arm to open and close under the control of the control handle.

[0013] In one embodiment, the clamping separation head further includes a connecting sleeve, the clamping arm and the connecting sleeve form a clamping structure that can be opened and closed under the action of the linkage, and the control component is detachably connected to the connecting sleeve so that it can be separated from the connecting sleeve after the clamping separation head clamps the wound.

[0014] In one embodiment, the clamping separation head further has a locking head disposed on the linkage member. The locking head has deformable legs that form a locking cavity with an opening. The separable member has a main body, a head, and a neck connecting the head and the main body. The head is housed in the locking cavity, and the neck passes through the opening. During the movement of the separable member toward the control handle, the head can push the legs to deform outward, causing the locking head to separate from the separable member. The deformed legs form a self-locking mechanism with the connecting sleeve to keep the clamping arm in a clamped state.

[0015] In one embodiment, the clamping arm further has a bendable portion, which is integrally formed with the clamping head, and the bendable portion can be bent under external force so that each clamping head can open and close relative to each other under the drive of the linkage.

[0016] In one embodiment, the flexible portion has at least two connecting units arranged along the length direction of the clamping arm. Adjacent connecting units are connected by a connecting portion. At least one side of the connecting portion is provided with a first gap. The first gap extends from the connecting portion along the circumference of the clamping arm to the side of the clamping arm, so that adjacent connecting units can be bent and deformed under external force. Each connecting unit has a second gap that penetrates the outer wall and inner wall of the clamping arm, so that each connecting unit itself can be bent and deformed under external force.

[0017] As shown in the above embodiments, the vascular clamp includes a clamping and separating head and a control component. The control component allows the operator to manipulate the clamping and separating head to clamp and fix the wound on the blood vessel of the target object. After clamping the wound, the clamping and separating head can be separated from the target object, thus maintaining the clamped state and remaining within the target object to promote healing. Since the clamping arm requires a large closing force to clamp both sides of the wound together, excessive closing force can easily damage the blood vessel. Therefore, in this vascular clamp, the clamping head of the clamping arm has a clamping body and a flexible layer located on the outer side of the clamping body. The hardness of the clamping body is greater than that of the flexible layer. The clamping body mainly ensures the strength of the clamping head and provides better closing force, while the flexible layer is used to contact the blood vessel when the clamping arm clamps the wound, thereby reducing damage to the blood vessel from the clamping head. Attached Figure Description

[0018] Figure 1 This is an exploded schematic diagram of a blood vessel clamp in one embodiment of this application. In order to better show the structure of each component in the same figure, the control handle 210 on the right side of the figure has been appropriately reduced in size.

[0019] Figure 2 This is a schematic diagram of the vascular clamp being in the clamped state in one embodiment of this application;

[0020] Figure 3 This is a cross-sectional view of the blood vessel clamp in the clamped state in one embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the vascular clamp in the open state in one embodiment of this application;

[0022] Figure 5 This is a cross-sectional view of the blood vessel clamp in the open state in one embodiment of this application;

[0023] Figure 6 This is a cross-sectional view of the connection state between the card head and the detachable component in one embodiment of this application;

[0024] Figure 7 This is a cross-sectional view of the card head and the detachable component in a state of disengagement in one embodiment of this application. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present 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 the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present 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.

[0026] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0027] 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. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0028] In some surgeries, such as those treating varicose veins in the digestive tract, wounds are created on the blood vessels. Therefore, it's necessary to find ways to keep these wounds closed to promote healing. However, given the fragility of blood vessels, finding a way to keep the wounds closed while protecting the vessels from further damage is a challenging problem.

[0029] To address the above technical problems, some embodiments of this application provide a vascular clamp that can easily clamp and fix the wound on a blood vessel (e.g., but not limited to veins) while protecting the blood vessel from damage.

[0030] Please refer to Figure 1-5 The vascular clamp 1 includes a clamping and separating head 100 and a control component 200 for manipulating the clamping and separating head 100 to close the wound. After the vascular clamp 1 completes the wound closure operation, the part of it remaining in the target body is the clamping and separating head 100, while the part detached from the clamping and separating head 100 is the control component 200.

[0031] The clamping and separating head 100 is used to perform wound clamping operations on blood vessels of a target object (human or animal) under the control of an operator. Under the operator's control, the clamping and separating head 100 can move back and forth, and can open and close. The clamping and separating head 100 can be, but is not limited to, the clamping and separating heads 100 of various existing hemostatic clips.

[0032] In some embodiments, the clamping separation head 100 has at least two clamping arms 110, such as two, three, or more clamping arms 110. Please refer to [reference needed]. Figure 1-5 The two clamping arms 110 are arranged opposite each other to achieve relative opening and closing through relative movement. Each clamping arm 110 has a clamping head 111 for clamping and fixing the wound surface on the blood vessel of the target object. The clamping head 111 is used to directly clamp the corresponding wound surface and contacts the portions of the blood vessel located on opposite sides of the wound surface. The control assembly 200 serves to allow the operator to operate and transmit force and movement to the clamping separation head 100. It may have a control handle 210 and corresponding traction elements 220, etc. The control assembly 200 is connected to the clamping separation head 100; therefore, the operator can control the back-and-forth movement and rotation of the clamping separation head 100 through the control assembly 200 to adjust the position of the clamping separation head 100.

[0033] The connection between the control component 200 and the clamping and separating head 100 is detachable. This connection ensures that after the clamping and separating head 100 clamps the wound, the control component 200 can be separated from the clamping and separating head 100, thus retaining the clamping and separating head 100 within the target body, while the end of the control component 200 inserted into the target body can be withdrawn. The separation of the control component 200 and the clamping and separating head 100 can refer to the structure of some existing hemostatic clips, which typically separate from the clamping and separating head 100 when the control component 200 is moved to a set position towards the control handle 210.

[0034] In the aforementioned vascular clip 1, the wound on the blood vessel can be closed in a minimally invasive manner, causing little damage to the target object and being simple to operate. However, in some existing hemostatic clips, in order to better close the tissues on both sides of the wound (these hemostatic clips are not used to close wounds on blood vessels), the clamping arm 110 is made of a high-hardness material (such as metal), and a large closing force is required to clamp the tissues on both sides of the wound together. But when these clamping arms 110 are used on the wound of a blood vessel, the excessive closing force and material hardness can easily cause secondary damage to the blood vessel by the clamping arm 110.

[0035] Therefore, in this vascular clip 1, please refer to... Figure 1 and 5In some embodiments, the clamping head 111 of the clamping arm 110 has a clamping body 1111 and a flexible layer 1112 disposed on the outer side of the clamping body 1111. The hardness of the clamping body 1111 is greater than that of the flexible layer 1112. Through this layered structure, the clamping body 1111 can be mainly used to ensure the strength of the clamping head 111 and provide better closing force, while the flexible layer 1112 is used to contact the blood vessel when the clamping arm 110 clamps the wound, forming a buffer structure between the clamping body 1111 and the blood vessel, blunting the sharpness of the pointed edge of the clamping body 1111, reducing the shear force acting on the lesion site when the clamping body 1111 closes, preventing laceration trauma during the clamping of the blood vessel, and reducing secondary damage to the blood vessel by the clamping head 111.

[0036] More specifically, in some embodiments, the clamping body 1111 is a metal clamping body made of metal material, and / or the flexible layer 1112 is a flexible layer made of silicone or soft plastic. Furthermore, the clamping body 1111 and the flexible layer 1112 may also be made of other suitable materials.

[0037] Regarding the flexible layer 1112, it can be disposed on the outer side of the clamping body 1111 in various ways. Specifically, the flexible layer 1112 may be located only in a portion of the clamping body 1111, for example, only in the area of ​​the clamping body 1111 used to contact the vascular wound. This at least ensures that damage to the vascular vessel by the clamping body 1111 is reduced when clamping the vessel. Of course, in other embodiments, for example… Figure 5 As shown, the flexible layer 1112 can also wrap around the clamping body 1111, thereby reducing not only the damage of the clamping body 1111 to blood vessels, but also the damage of the clamping body 1111 to other surrounding tissues.

[0038] Furthermore, the flexible layer 1112 can be fixedly or loosely disposed on the clamping body 1111 by means of dip coating, coating, bonding, ultrasonic welding, wrapping, nesting, or other methods. The flexible layer 1112 is preferably made of flexible medical materials to meet surgical requirements. In some more specific embodiments, the manufacturing process of the flexible layer 1112 is based on silicone, TPU, or other medical material dip coating technology, specifically by covering the surface of the clamping body 1111 with a flexible material to form a flexible structural system. This processing method allows the clamping body 1111 to achieve flexible structural characteristics in specific locations while maintaining overall rigidity, thereby avoiding secondary damage to the lesion site caused by the clamping body 1111 during use.

[0039] For details, please refer to Figure 1 and 5In some embodiments, the flexible layer 1112 is a sheath-like structure, which is sleeved on the clamping body 1111. In this structure, the sheath-like structure can form a wrapping structure around the clamping body 1111, thereby forming a wrapping around the various areas surrounding the clamping body 1111. Furthermore, the sheath-like structure is detachable from the clamping body 1111, so the sheath-like structure can be removed and replaced.

[0040] Please refer to Figure 1 and 5 In some embodiments, the inner cavity of the sheath structure of the flexible layer 1112 is smaller than that of the clamping body 1111, so that the sheath structure can fit tightly onto the clamping body 1111 to prevent the flexible layer 1112 from detaching unintentionally. Of course, in other embodiments, the inner cavity of the sheath structure may also be larger than that of the clamping body 1111, and fixation may be achieved by other means, such as bonding, snap-fitting, binding or other methods.

[0041] In other embodiments, the flexible layer 1112 is fixedly covered on at least a portion of the outer wall of the clamping body 1111. This fixed coverage can be achieved using processes such as dip coating, coating, bonding, and ultrasonic welding as described above. This fixing method ensures that the flexible layer 1112 forms a stable connection with the clamping body 1111, eliminating concerns about the flexible layer 1112 detaching.

[0042] Furthermore, in order to enable the clamping arm 110 to open and close by bending, the clamping arm 110 also has a bendable portion 112. The bendable portion 112 is integrally formed with the clamping head 111, and the bendable portion 112 can be bent under the action of external force so that each clamping head 111 can open and close relatively under the drive of the linkage 120 (which will be introduced later).

[0043] Please continue to refer to this. Figure 4 In some embodiments, the flexible portion 112 can be implemented using a structure that is more easily bent and deformed than other parts, and this structure can be integrally formed with other structures of the clamping arm 110. The clamping head 111 has a higher resistance to bending deformation than the flexible portion 112, ensuring that the clamping head 111 provides a better gripping effect on the target object. This bending deformation of the flexible portion 112 is reversible, meaning that the flexible portion 112 is elastic and can spring back to its original position when the external force is removed; therefore, this bending deformation can be repeated.

[0044] Please continue to refer to this. Figure 4In some embodiments, the flexible portion 112 has at least two connecting units 1121 arranged along the length of the clamping arm 110. Adjacent connecting units 1121 are connected by a connecting portion 1122, which has a first gap 1123 on at least one side. The first gap 1123 extends circumferentially from the connecting portion 1122 to the side of the clamping arm 110, allowing adjacent connecting units 1121 to bend and deform under external force. The connecting portion 1122 may be located in the middle of adjacent connecting units 1121, forming a chain-like connection, thereby providing better bending and deformation capabilities.

[0045] To further improve the bending deformation capacity and recovery capacity of the bendable part 112, please refer to [further details]. Figure 4 In some embodiments, each connecting unit 1121 may further have a second gap 1124, which penetrates the outer wall and inner wall of the clamping arm 110, so that each connecting unit 1121 itself can be bent and deformed under the action of external force. Thus, under the dual action of the bending and deformation capability of the connecting unit 1121 itself and the bending and deformable structure formed between adjacent connecting units 1121, the entire bendable part 112 has better bending and deformation capability and reset capability.

[0046] The flexible portion 112 shown in the above embodiments can be directly processed on the clamping arm 110 by laser cutting or other cutting processes. Of course, the above embodiments are only one example of the flexible portion 112, and the flexible portion 112 shown in this application can also adopt various existing forms of flexible deformable structures.

[0047] Furthermore, in some embodiments, please continue to refer to Figure 4 The clamping and separating head 100 also includes a connecting sleeve 130. The clamping arm 110 and the connecting sleeve 130 form a clamping structure that can open and close under the action of the linkage 120. The control component 200 is detachably connected to the connecting sleeve 130. The control component 200 can drive the connecting sleeve 130 and the clamping arm 110 to move back and forth under normal conditions, and can also be separated from the connecting sleeve 130 after the clamping and separating head 100 has clamped the wound. The clamping structure formed by the clamping arm 110 and the connecting sleeve 130 can be a one-piece structure or a separate assembly structure.

[0048] Please continue to refer to this. Figure 4 In this embodiment, the clamping arm 110 and the connecting sleeve 130 are integrally formed, that is, the clamping arm 110 and the connecting sleeve 130 are a single part, which can be directly processed on the substrate by laser cutting or other cutting processes.

[0049] certainly, Figure 4This is merely one example of the clamping arm 110 and the connecting sleeve 130. In reality, the clamping arm 110 and the connecting sleeve 130 can also be implemented using other existing structures. For example, in some other embodiments, the clamping arm 110 and the connecting sleeve 130 are separate components, and one end of the clamping arm 110 is driven by the linkage 120 in the connecting sleeve 130 (which will be further described later) to achieve opening and closing.

[0050] Furthermore, this application also provides examples of some connection structures between the clamping and separating head 100 and the control component 200. Of course, the connection structure can also adopt the connection structure used in other existing hemostatic clips.

[0051] Please refer to Figure 1-5 In some embodiments, the clamping and separating head 100 has a linkage 120 and a rocker arm 140, and the control assembly 200 has a pulling member 220, a separable member 230, and a control handle 210 for operator control. The pulling member 220 may be a wire rope or other structures commonly used for pulling; it may be a combined structure or a single part. Both ends of the pulling member 220 are connected to the control handle 210 and the separable member 230, respectively. The separable member 230 is detachably connected to the linkage 120 so that the movement input by the operator can be transmitted through the pulling member 220 to the separable member 230 and the linkage 120. The linkage 120 is connected to the corresponding clamping arm 110 via the corresponding rocker arm 140, so that the clamping arm 110 can open and close under the control of the control handle 210.

[0052] More specifically, in some embodiments, please refer to Figure 1 and 5 The linkage 120 can specifically be a sliding block, which can be further divided into a first sliding block 121 and a second sliding block 122. The first sliding block 121 and the second sliding block 122 are processed separately and can be assembled into a complete linkage 120. The pair of rocker arms 140 are connected to the pair of clamping arms 110 in a one-to-one correspondence, i.e., one rocker arm 140 is connected to one clamping arm 110. The rocker arm 140 is also rotatably connected to the linkage 120, and the axial movement of the linkage 120 can be divided into forward and backward (e.g., ...). Figure 3 As shown, when the linkage 120 moves forward, the pair of rocker arms 140 can drive the pair of clamping arms 110 to move closer together to form a clamping action; when the linkage 120 moves backward, the pair of rocker arms 140 can drive the pair of clamping arms 110 to move away from each other to achieve an opening action. Of course, this embodiment only shows one way in which the linkage 120 is used to drive the clamping arms 110 to clamp and open. In other embodiments, the linkage 120 can also be connected to the clamping arms 110 through other structures to achieve the purpose of the linkage 120 driving the clamping arms 110 to clamp and open.

[0053] Furthermore, in order to achieve a detachable connection between the linkage 120 and the control component 200, in some embodiments, please refer to... Figure 6 and 7 The clamping and separating head 100 also has a locking head 150 disposed on the linkage member 120, and the linkage member 120 and the locking head 150 move back and forth together. After the first sliding block 121 and the second sliding block 122 are assembled into the linkage member 120, an assembly cavity is formed (e.g., Figure 6 As shown, the clamp head 150 can be fixedly installed in the assembly cavity to achieve a fixed connection between the clamp head 150 and the linkage member 120. Of course, in other embodiments, the clamp head 150 and the linkage member 120 can also be fixedly connected or connected by transmission in other ways.

[0054] Please refer to Figure 6 and 7 The locking head 150 has deformable legs 151 that form a locking cavity with an opening. The separable member 230 has a main body 231, a head 232, and a neck 233 connecting the head 232 and the main body 231. The head 232 is housed within the locking cavity, and the neck 233 extends through the opening, thereby ensuring that under normal conditions, such as... Figure 6 As shown, the separable component 230 can drive the chuck head 150 and the entire clamping and separating head 100 to move in the front-to-back direction. Furthermore, as... Figure 7 As shown, during the process of the separable part 230 moving towards the end where the control handle 210 is located (moving backward), when the clamping arm 110 is in the clamped state, the chuck head 150 and the linkage 120 cannot continue to move backward. At this time, the head 232 can push the support leg 151 to deform outward, so that the chuck head 150 is separated from the separable part 230, and the deformed support leg 151 forms a self-locking with the connecting sleeve 130 to keep the clamping arm 110 in the clamped state.

[0055] Specifically, during the rearward movement of the separable component 230, especially when the separable component 230 moves to the position where the clamping head 150 can no longer move rearward (as the control component 200 moves rearward, the clamping arm 110 clamps the wound surface tighter and tighter; when the clamping arm 110 can no longer close due to the influence of the clamped object, the clamping head 150 also cannot continue to move rearward), please refer to... Figure 7At this point, the separable component 230 continues to move backward under the operator's control. The head 232 can push the support leg 151 to deform outward, causing the separable component 230 to separate from the locking head 150. In this embodiment, the locking head 150 and the separable component 230 can be a single integrally formed part. A small amount of material can be left between the support leg 151 and the main body 231, and / or between the cavity wall of the locking cavity and the head 232, to form a narrow connecting rib 234. This connecting rib 234 not only ensures the connection between the locking head 150 and the separable component 230, but can also be gradually stretched under certain conditions. When the yield limit is reached, the connecting rib 234 will break, thus achieving the separation of the locking head 150 and the separable component 230. Of course, the detachable connection between the separable component 230 and the locking head 150 can also adopt other structures in the prior art, and is not limited to the one shown in this embodiment.

[0056] After the chuck head 150 and the separable member 230 are disengaged, in order to keep the clamping arm 110 in the closed state, it is undesirable for the chuck head 150 to move forward under the reaction force of the tissue and open the clamping arm 110. Therefore, in some embodiments, the clamping arm 110 has a locking portion, and the outer side of the support leg 151 has a locking engagement portion. When the head 232 pushes the support leg 151 to deform outward, the locking engagement portion and the locking portion form a lock to keep the clamping arm 110 in the closed state. This locking effect can be achieved before, during, or after the separable member 230 is separated from the chuck head 150. More specifically, in Figure 6 and 7 In the illustrated embodiment, the locking engagement part is a locking plate 152, and the locking part is a locking window 131. Of course, in other embodiments, the locking engagement part and the locking part may also adopt other implementation methods in the prior art, and are not limited to the structure of this embodiment.

[0057] In order to keep the clamping arm 110 inside the target object, some embodiments also require external disengagement, i.e., disengagement of the control assembly 200 and the connecting sleeve 130. Please refer to... Figure 1In some embodiments, the control assembly 200 has a release spring 240 and a traction member 220 for connection to a control handle 210. The traction member 220 is connected to a separable member 230. The release spring 240 is connected to the traction member 220. The clamping arm 110 has a window 132, on which the release spring 240 is hooked to connect the clamping arm 110 to the control assembly 200. This connection ensures that the control assembly 200 can control the back-and-forth movement of the clamping arm 110 before release, and also allows the release spring 240 to separate from the window 132 during the rearward movement of the traction member 220, thereby separating the clamping arm 110 from the control assembly 200. Specifically, when the clamping arm 110 clamps a blood vessel, it cannot move backward with the control assembly 200, thus causing the release spring 240 to disengage from the window 132 of the clamping arm 110. Of course, this is only an example of a gripping arm 110 and a control component 200 being detachable. This detachable connection can also be implemented in other ways in the prior art and is not limited to the structure of this embodiment.

[0058] Furthermore, only the parts of the structure related to the control component 200 and the clamping separation head 100 are described here. For other embodiments, please refer to [the relevant documentation]. Figure 1 The control assembly 200 may also include a rotating sleeve 250 and an outer tube 260. The pulling member 220 passes through the outer tube 260. The rotating sleeve 250, the release spring 240, and the clamping separation head 100 are connected as a whole structure. Under the control of the pulling member 220, the whole structure can rotate relative to the outer tube 260 to adjust the clamping direction. The outer tube 260 protects the pulling member 220 and other components inside. After disengagement, the outer tube 260, the rotating sleeve 250, the pulling member 220, and the separable member 230 are moved out of the target object together.

[0059] Of course, in addition to closing blood vessels, the vascular clip 1 shown in this application can also be applied to wounds on other tissues besides blood vessels.

[0060] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A vascular clamp, characterized in that, include: A clamping and separating head having at least two clamping arms, each clamping arm having a clamping head for clamping and fixing a wound on a blood vessel of a target object, each clamping head having a clamping body and a flexible layer disposed on the outside of the clamping body, the hardness of the clamping body being greater than the hardness of the flexible layer, the flexible layer being used to contact the blood vessel when the clamping arm clamps the wound; And a control component for manipulating the clamping separation head to clamp the wound surface, the control component being detachably connected to the clamping separation head so as to be detachable from the clamping separation head after the clamping separation head has clamped the wound surface.

2. The vascular clamp as described in claim 1, characterized in that, The flexible layer is a sheath-like structure, which is sleeved on the clamping body.

3. The vascular clamp as described in claim 2, characterized in that, The inner cavity of the sheath structure is smaller than that of the clamping body, so that the sheath structure can fit tightly onto the clamping body.

4. The vascular clamp as described in claim 1, characterized in that, The flexible layer is fixedly covered on at least a portion of the outer wall of the clamping body.

5. The vascular clamp as described in claim 1, characterized in that, The clamping body is a metal clamping body made of metal material, and / or the flexible layer is a flexible layer made of silicone or soft plastic.

6. The vascular clamp as described in any one of claims 1-5, characterized in that, The clamping and separating head has a linkage and a rocker arm. The control component has a pulling member, a separable member, and a control handle for the operator to operate. The two ends of the pulling member are respectively connected to the control handle and the separable member. The separable member is detachably connected to the linkage, so that the movement input by the operator can be transmitted to the separable member and the linkage through the pulling member. The linkage is connected to the corresponding clamping arm through the corresponding rocker arm, so as to drive the clamping arm to open and close under the control of the control handle.

7. The vascular clamp as described in claim 6, characterized in that, The clamping and separating head also includes a connecting sleeve. The clamping arm and the connecting sleeve form a clamping structure that can be opened and closed under the action of the linkage. The control component is detachably connected to the connecting sleeve so that it can be separated from the connecting sleeve after the clamping and separating head clamps the wound.

8. The vascular clamp as described in claim 7, characterized in that, The clamping and separating head also has a locking head disposed on the linkage member. The locking head has deformable legs, which form a locking cavity with an opening. The separable member has a main body, a head, and a neck connecting the head and the main body. The head is housed in the locking cavity, and the neck passes through the opening. During the movement of the separable member toward the control handle, the head can push the legs to deform outward, causing the locking head to separate from the separable member. The deformed legs form a self-locking mechanism with the connecting sleeve to keep the clamping arm in a clamped state.

9. The vascular clamp as described in claim 6, characterized in that, The clamping arm also has a bendable portion, which is integrally formed with the clamping head. The bendable portion can be bent under external force so that each clamping head can open and close relative to the other under the action of the linkage.

10. The vascular clamp as described in claim 9, characterized in that, The flexible part has at least two connecting units arranged along the length direction of the clamping arm. Adjacent connecting units are connected by a connecting part. At least one side of the connecting part is provided with a first gap. The first gap extends from the connecting part along the circumference of the clamping arm to the side of the clamping arm, so that adjacent connecting units can be bent and deformed under the action of external force. Each of the connecting units has a second gap that penetrates the outer and inner walls of the clamping arm, so that each of the connecting units itself can bend and deform under external force.

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