Medical clamps

Abstract

The present disclosure provides a medical clamp, comprising: a clamp arm assembly, a clamping body, and a patch structure. The clamp arm assembly is arranged in pairs, comprising a first clamp arm and a second clamp arm, configured to clamp the atrial appendage under the action of an external force; the clamping body is connected to the clamp arm assembly, configured to enable the first clamp arm to fit the surface of the second clamp arm; the patch structure is detachably connected to the clamp arm assembly, configured to isolate the clamp arm assembly from the atrial appendage to prevent inflammation in the atrial appendage. When the clamp arm assembly clamps the atrial appendage under the action of an external force, the patch structure separates the clamp arm assembly from the atrial appendage to prevent inflammation in the atrial appendage due to direct contact between the clamp arm and human tissue. In the medical clamp provided by the present disclosure, the patch structure is thinner and has a larger contact area with the atrial appendage. Since the material of the patch structure is more easily accepted by the human body, it is more beneficial to the patient's recovery.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and in particular to a medical clamp. Background Art

[0002] Atrial fibrillation is one of the most common cardiac arrhythmias clinically. The consequences of stroke caused by atrial fibrillation are extremely severe, with mortality and disability rates reaching 70%. In patients with valvular atrial fibrillation, 57% of atrial thrombi originate in the left atrial appendage, while in patients with non-valvular atrial fibrillation, 90% of left atrial thrombi originate in the left atrial appendage. Even after sinus rhythm is restored, the left atrial appendage remains stunned, and thrombosis can still form again.

[0003] Currently, there are three main clinical methods for preventing ischemic stroke caused by atrial fibrillation. One method is to take anticoagulants, such as warfarin. However, warfarin carries a certain risk of bleeding and requires frequent monitoring. It has many contraindications and is difficult to use clinically. In addition, warfarin may cause osteoporosis and soft tissue necrosis. The second method is to directly remove or ligate the atrial appendage during cardiac surgery. The main disadvantage of this method is the low rate of complete closure of the left atrial appendage. Previous studies have shown that the success rate of complete removal of the left atrial appendage is as high as approximately 80%. The third method is to close the left atrial appendage with a device, using percutaneous intracardiac left atrial appendage occlusion products. However, the operation is complex and risky, and its safety and effectiveness remain to be verified. Summary of the Invention

[0004] The purpose of this disclosure is to provide a medical clamp to address the technical problems in the related art. The specific solution is as follows:

[0005] The present disclosure provides a medical clamp, comprising: a clamp arm assembly, which is arranged in pairs and includes a first clamp arm and a second clamp arm, configured to clamp an atrial appendage under the action of an external force; a clamp body, connected to the clamp arm assembly, configured to enable the first clamp arm to fit the surface of the second clamp arm; and a patch structure, detachably connected to the clamp arm assembly, configured to isolate the clamp arm assembly from the atrial appendage.

[0006] In some embodiments, at least a portion of the patch structure is disposed between the clamp arm assembly and the clamp body.

[0007] In some embodiments, the flattened length of the patch structure is greater than the sum of the lengths of the first clamping arm and the second clamping arm.

[0008] In some embodiments, a surface of the first clamping arm and / or the second clamping arm is provided with a protrusion configured to increase the friction between the clamping arm assembly and the patch structure.

[0009] In some embodiments, a recessed portion is provided on the surface of the first clamping arm and / or the second clamping arm, the recessed portion matching the shape and structure of the raised portion and configured to engage with the raised portion to increase the contact area between the patch structure and the auricle. In some embodiments, the clamping body has an initial state and an open state. In response to the clamping body being in the initial state, the first clamping arm and the second clamping arm are in contact with each other; in response to the clamping body being in the open state, the first clamping arm and the second clamping arm are separated.

[0010] In some embodiments, the clamping body includes: a guide wing, which is arranged on the side of the clamping body away from the clamping arm assembly, and the guide wing is detachably connected to the external force applying member, and is configured to switch the clamping body between the initial state and the open state under the action of the external force applying member.

[0011] In some embodiments, the clamping body includes through holes, which are arranged in pairs and configured to allow a portion of the clamping arm assembly to pass through the clamping body, so as to connect the clamping arm assembly to the clamping body.

[0012] In some embodiments, the free end of the clamping body is tilted in a direction away from the clamping arm assembly, and is configured to assist the clamping body in switching from the open state to the initial state.

[0013] In some embodiments, the clamping arm assembly is rotatably connected to the clamping body and is configured to adapt to the uneven structure of the auricle surface.

[0014] Compared with the related art, the above solution of the embodiment of the present disclosure has at least the following beneficial effects:

[0015] The medical clamp provided herein comprises a patch structure that is detachably connected to a clamp arm assembly. When the clamp arm assembly clamps the atrial appendage under external force, the patch structure separates the clamp arm assembly from the atrial appendage, preventing inflammation of the atrial appendage caused by direct contact between the clamp arm and human tissue. Compared to related art solutions that use wire-wrapped medical clamps, the patch structure provided herein is thinner, with a larger contact area with the atrial appendage. Furthermore, because the patch structure is made of a material that is more easily accepted by the human body, patients are less likely to experience abnormal reactions after use.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0018] Figure 1 It is a schematic structural diagram of a medical clamp according to an exemplary embodiment.

[0019] Figure 2 is a front view of a medical clip according to an exemplary embodiment.

[0020] Figure 3 It is a structural diagram showing an initial state according to an exemplary embodiment.

[0021] Figure 4 It is a structural diagram showing an open state according to an exemplary embodiment.

[0022] Figure 5 is an exploded view of a medical clip according to an exemplary embodiment.

[0023] Reference numerals:

[0024] The clamping body 100, the first through hole 101, the first clamping plate 110, the second clamping plate 120, the connecting plate 130, and the first tilting portion 140;

[0025] The clamping arm assembly 200 , the first clamping arm 210 , the second clamping arm 220 , the first mounting portion 211 , the second tilting portion 230 , the rotating shaft structure 240 , the protruding portion 250 , the recessed portion 260 , and the guide wing 270 ;

[0026] Patch structure 300 , first surface 311 , second surface 312 , and third surface 313 . DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the present disclosure more clear, the present disclosure will be further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only a portion of the embodiments of the present disclosure, rather than all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort are intended to fall within the scope of protection of the present disclosure.

[0028] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms "a," "the," and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "A variety of" generally includes at least two, and other quantifiers are similar.

[0029] It should be understood that although the terms "first," "second," "third," etc. may be used to describe in the present disclosure, these descriptions should not be limited to these terms. These terms are only used to distinguish the objects being described. For example, without departing from the scope of the present disclosure, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. In addition, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0030] It should be understood that the term "and / or" as used herein is merely a description of an association between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. Furthermore, the character " / " as used herein generally indicates that the associated objects are in an "or" relationship. The singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0031] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present disclosure based on the specific circumstances.

[0032] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or device. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or device comprising the element.

[0033] Related medical clamps lack a patch structure and instead use high-strength metal wires coated with polymer materials to clamp the atrial appendage. While this clamping method can block blood clots, the thin wires can cause inflammation or even cutting, leading to complications. Alternatively, clamp arms can be used to directly clamp the atrial appendage, preventing adjustment and resulting in incomplete closure.

[0034] In view of this, the present disclosure provides a medical clamp, including: a clamp arm assembly, which is arranged in pairs, including a first clamp arm and a second clamp arm, configured to clamp the atrial appendage under the action of an external force; a clamping body, connected to the clamp arm assembly, configured to make the first clamp arm and the second clamp arm fit together; a patch structure, detachably connected to the clamp arm assembly, configured to isolate the clamp arm assembly from the atrial appendage to avoid inflammation at the atrial appendage.

[0035] The medical clamp provided herein comprises a patch structure that is detachably connected to a clamp arm assembly. When the clamp arm assembly clamps the atrial appendage under the action of an external force, the patch structure separates the clamp arm assembly from the atrial appendage. This structure can, on the one hand, disperse stress within the clamp arm assembly, preventing excessive stress concentration and thus achieving complete sealing; on the other hand, it can prevent inflammation in the atrial appendage caused by direct contact between the clamp arm and human tissue. Compared to related technologies, the patch structure provided herein is thinner, with a larger contact area with the atrial appendage. Furthermore, because the material of the patch structure is more easily accepted by the human body, patients are less likely to experience abnormal reactions after use.

[0036] The present invention adopts a clamping arm structure with a rotating shaft to close the atrial appendage. The rotating shaft structure allows the clamping arm to rotate to a certain extent, so that it can effectively adapt to the position change after clamping the atrial appendage, making the two clamping arms basically parallel, so that the clamping force is evenly applied to the clamped part of the entire atrial appendage, thereby avoiding the risk of incomplete clamping at that part.

[0037] Optional embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0038] The present disclosure provides a medical clamp, such as Figure 1 As shown, it includes: a clamping arm assembly 200, a clamping body 100 and a patch structure 300.

[0039] like Figure 2 As shown, the medical clamp has an axisymmetric structure and comprises a first clamping plate 110, a second clamping plate 120, and a connecting plate 130. The first clamping plate 110 and the second clamping plate 120 are connected by the connecting plate 130. The first clamping plate 110 and the second clamping plate 120 are symmetrical, so that the medical clamp can apply a balanced force to the affected area during the clamping process.

[0040] In some embodiments, an included angle α is formed between the first clamping plate 110 or the second clamping plate 120 and the connecting plate 130, and the angle α is less than 90°. The first clamping plate 110 and the second clamping plate 120 are configured to have an inward clamping tendency to assist the medical clamp in clamping the atrial appendage.

[0041] like Figure 3 As shown, the free ends of the first clamping plate 110 and the second clamping plate 120 are provided with first tilting portions 140. The first tilting portions 140 are configured to cause at least a portion of the free ends of the first clamping plate 110 and the second clamping plate 120 to be pressed inwardly, thereby assisting the first clamping plate 110 and the second clamping plate 120 in clamping the atrial appendage. Specifically, when the medical clamp clamps the atrial appendage, an external force can be applied to the first tilting portions 140 to increase the clamping force of the medical clamp.

[0042] In some embodiments, the clamping body 100 has Figure 3 The initial state shown and Figure 4 In the open state shown, the clamp body 100 is adapted to switch between an initial state and an open state so that the medical clamp can clamp or release the atrial appendage.

[0043] In some embodiments, the portion where the first clamping plate 110 or the second clamping plate 120 is connected to the connecting plate 130 is a rounded structure.

[0044] In some embodiments, the portions where the first clamping plate 110 and the second clamping plate 120 are connected to the connecting plate 130 are rounded structures.

[0045] The rounded corner design improves the strength and fatigue life of the casting, enhancing the reliability and durability of the part. It also reduces the risk of part deformation, improves part processing accuracy, and reduces manufacturing costs. In practical applications, the rounded corner design offers greater elasticity than right-angle or chamfered corners, allowing the clamping body 100 to have a higher rebound rate after elastic deformation under external force.

[0046] In some embodiments, the first clamping plate 110, the second clamping plate 120, and the connecting plate 130 are integrally formed. This integrally formed component offers advantages such as superior mechanical strength, a smooth surface, ease of operation, and high production efficiency during processing. Furthermore, this integrally formed component exhibits superior resilience, allowing the first clamping plate 110 and the second clamping plate 120 to quickly return to their original position when the clamping body 100 is switched from the open state to the initial state.

[0047] In some embodiments, the clamping arm assembly 200 is provided in pairs, including a first clamping arm 210 and a second clamping arm 220, wherein the first clamping arm 210 and the second clamping arm 220 are connected to the first clamping plate 110 and the second clamping plate 120 respectively, and are configured to clamp the atrial appendage under the action of an external force. Figure 3 As shown, the first clamping arm 210 and the second clamping arm 220 are at least partially in contact with each other, and the medical clamp can be used to clamp the atrial appendage; in response to the clamping body 100 being in the open state, as shown Figure 4 As shown, the surfaces of the first clamp arm 210 and the second clamp arm 220 are completely separated, and at this time, the medical clamp 1000 can be separated from the atrial appendage.

[0048] In some embodiments, the first clamp arm 210 and the second clamp arm 220 have the same shape and structure. When the clamp arm assembly 200 is mounted on the clamp body 100, the first clamp arm 210 and the second clamp arm 220 engage with each other. Through the clamping action of the first clamp arm 210 and the second clamp arm 220, the patient's left atrial appendage (LAA) can be clamped to prevent blood from entering the LAA, eliminate the source of thrombus, and reduce the risk of stroke caused by atrial fibrillation.

[0049] Specifically, if Figure 5 As shown, a first mounting portion 211 is provided on the side of the first clamping arm 210 and the second clamping arm 220 facing the clamping body 100. A first through-hole 101 is provided through the first clamping plate 110 and the second clamping plate 120. The first mounting portions 211 of the first clamping arm 210 and the second clamping arm 220 pass through the first through-hole 101 and are movably connected to the clamping body 100. The first mounting portion 211 matches the shape and size of the first through-hole 101. When the first mounting portion 211 passes through the first through-hole 101, the gap between the side wall of the first mounting portion 211 and the inner side wall of the first through-hole 101 is no greater than 1 mm. This prevents the clamping arm assembly 200 from moving too far relative to the clamping body 100, which could cause inaccurate clamping.

[0050] In some embodiments, the clamp arm assembly 200 further includes a rotating shaft structure 240. The clamp arm assembly 200 is movably connected to the clamp body 100. After the first mounting portion 211 passes through the first through hole 101, the rotating shaft structure 240 passes through the first mounting portion 211 to connect the clamp arm assembly 200 to the clamp body 100. The clamp arm assembly 200 can rotate relative to the clamp body 100 about the rotating shaft structure 240.

[0051] In actual applications, because the shapes and sizes of the atrial appendages of different patients are not exactly the same, the clamping arm assembly 200 is rotatably connected relative to the clamping body 100. When the medical clamp 1000 is clamped on the atrial appendage, the clamping arm assembly 200 rotates relative to the clamping body 100 to quickly adapt to the atrial appendages of different thicknesses.

[0052] In some embodiments, a plurality of protrusions 250 are provided on a side of the first clamping arm 210 and the second clamping arm 220 facing the patch structure 300 .

[0053] The protrusion 250 is configured to increase the friction between the first clamping arm 210 or the second clamping arm 220 and the patch structure 300, thereby preventing at least a portion of the patch structure 300 from being separated from the first clamping arm 210 or the second clamping arm 220. Furthermore, when the clamping arm assembly 200 is clamped on the atrial appendage, the protrusion 250 can increase the contact area between the patch structure 300 and the atrial appendage, thereby assisting the patch structure 300 in clamping the atrial appendage.

[0054] In some embodiments, as Figure 4 As shown, a plurality of protrusions 250 are provided on the side of the first clamping arm 210 or the second clamping arm 220 facing the patch structure 300. Correspondingly, a plurality of recesses 260 are provided on the side of the second clamping arm 220 or the first clamping arm 210 facing the patch structure 300. The recesses 260 match the protrusions 250 in structure. In response to the clamping body 100 switching from the open state to the initial state, the recesses 260 engage with the protrusions 250, thereby enabling the first clamping arm 210 and the second clamping arm 220 to stably clamp the patch structure 300.

[0055] In some embodiments, as Figure 5 As shown, the surface of the first clamping arm 210 may be provided with equidistant protrusions 250 and recesses 260. Correspondingly, the surface of the second clamping arm 220 may be provided with equidistant recesses 260 and protrusions 250, configured to increase the contact area between the first clamping arm 210 and the second clamping arm 220, so that the patch structure 300 can stably clamp the atrial appendage under the action of the clamping arm assembly 200.

[0056] In some embodiments, the raised portions 250 and recessed portions 260 are arranged in an alternating pattern, such that the raised portions 250 and recessed portions 260 of the two clamping arms complement each other. This arrangement allows the clamping arm assembly 200 to effectively clamp the atrial appendage. Furthermore, in the initial state, the two clamping arms can effectively fit together, minimizing the volume of the medical clamp 1000 and facilitating placement of the medical clamp 1000 into the chest cavity during operation. Furthermore, during the manufacturing process, both clamping arms can be manufactured using a single mold, significantly reducing production costs.

[0057] In some embodiments, one end of each of the first and second clamping arms 210 and 220 includes a second tilted portion 230. The second tilted portion 230 is configured to have substantially the same curvature as the first tilted portion 140. When the clamping arm assembly 200 is mounted on the clamping body 100, the second tilted portion 230 is aligned with at least a portion of the first tilted portion 140. When the medical clamp 1000 clamps the atrial appendage, an external force can be applied to the first tilted portion 140, causing the first tilted portion 140 and the second tilted portion 230 to work together to increase the clamping force on the medical clamp 1000.

[0058] In some embodiments, the second tilting portion 230 and the first clamping arm 210 or the second clamping arm 220 are configured as an angled tilting structure. Specifically, the angle between the plane where the second tilting portion 230 lies and the plane of the first clamping arm 210 or the second clamping arm 220 is less than 145 degrees. This allows the free end of the clamping arm assembly 200 to be open, thereby guiding the clamping arm assembly 200 to clamp the atrial appendage.

[0059] In some embodiments, the second tilting portion 230 may be an arc-shaped structural member, the line between the free end point of the second tilting portion 230 and the deformation position where the second tilting portion 230 is curved is L1, and the plane where the first clamping arm 210 or the second clamping arm 220 is located is L2. Figure 3 As shown, there is an angle β between L1 and L2, and the angle β is greater than 35°, so that the tilting angle of the second tilting portion 230 has the function of guiding the auricle clamped by the first clamping arm 210 or the second clamping arm 220. On the other hand, if an external force-applying component is added to the operating room, the external force can be applied to the second tilting portion 230 to apply pressure to the clamping arm assembly 200, so that the clamping arm assembly 200 is tightly held with the medical clamp 1000.

[0060] In some embodiments, the clamping body 100 further includes a guide wing 270, which is disposed on a side of the clamping body 100 away from the clamping arm assembly 200 and is fixedly connected to the clamping body 100. A hollow space is defined between the guide wing 270 and the clamping body 100. When the medical clamp 1000 is in the initial state, an external force applying member can be inserted into the hollow space within the guide wing 270 along the extension direction of the first direction. Furthermore, the external force applying member can be used to switch the clamping body 100 between the initial state and the open state. After the clamping body 100 clamps the atrial appendage, the external force applying member can be withdrawn from the guide wing 270.

[0061] In some embodiments, the patch structure 300 is detachably connected to the clamp arm assembly 200 and is configured to isolate the clamp arm assembly 200 from the atrial appendage to prevent inflammation at the atrial appendage. Figure 4 、 Figure 5 As shown, the patch structure 300 wraps around the clamp arm assembly 200, isolating the first clamp arm 210 and the second clamp arm 220 from the atrial appendage. This structural design not only disperses stress within the clamp arm assembly 200, preventing excessive stress concentration and achieving complete sealing, but also prevents inflammation of the atrial appendage caused by direct contact between the first clamp arm 210 or the second clamp arm 220 and human tissue. Compared to related art, the patch structure 300 provided in the medical clamp 1000 is thinner, resulting in a larger contact area with the atrial appendage. Furthermore, because the material of the patch structure 300 is more easily accepted by the human body, patients are less likely to experience abnormal reactions after use.

[0062] In some embodiments, the patch structure 300 includes a first surface 311 , a second surface 312 , and a third surface 313 . The first surface 311 , the second surface 312 , and the third surface 313 semi-enclose the first clamping arm 210 and the second clamping arm 220 .

[0063] To more clearly describe the shape and structure of the patch structure 300, the following directions are defined based on the medical clip 1000: an anterior-posterior axis X, a lateral axis Y, and a central vertical axis Z. The direction of the anterior-posterior axis X is a first direction, the direction of the lateral axis Y is a second direction, and the direction of the vertical axis Z is a third direction.

[0064] The first surface 311 extends along the first direction, covering the surface facing the first clamp arm 210 and the second clamp arm 220. When the clamp assembly clamps the atrial appendage, the first surface 311 directly contacts the atrial appendage. The first surface 311 includes a connecting portion that converges when the medical clamp 1000 is in the initial position and expands when the medical clamp 1000 is in the open position. In the projection along the third direction, the flattened length of the first surface 311 of the patch structure 300 along the first direction is approximately twice the length of the first clamp arm 210 or the second clamp arm 220, preferably 2.2 to 2.6 times. When the clamp body 100 is in the initial state, the patch structure 300 flattens around the clamp arm assembly 200, with a redundant portion still foldable into the hollow space formed between the connecting plate 130 and the first clamp arm 210 or the second clamp arm 220. In response to the clamping body 100 switching from the initial position to the open position, the redundant part of the patch structure 300 can extend with the displacement of the first clamping arm 210 or the second clamping arm 220, thereby increasing the wrapping area of ​​the patch structure 300 on the clamping arm assembly 200, thereby increasing the contact area between the patch structure 300 and the atrial appendage, which is beneficial to the recovery of the affected area.

[0065] In the first direction, the second surface 312 covers the free ends of the first clamping arm 210 and the second clamping arm 220. In the second direction, the second surface 312 is disposed on both sides of the first surface 311 and extends along the third direction, configured to cover the sidewalls of the first clamping arm 210 and the second clamping arm 220. The third surface 313 is connected to the second surface 312. When the clamping arm assembly 200 is installed on the clamping body 100, the patch structure 300 and the clamping arm assembly 200 remain stable and are not likely to fall off.

[0066] The biomaterial used in the patch structure 300 of the present application is selected from a degradable polymer material or a degradable animal-derived biomaterial. Preferably, the degradable animal-derived biomaterial includes immunogen-removed dermal matrix, pericardium, peritoneum, bladder submucosa, or small intestinal submucosa, or a combination of these materials, such as a combination obtained by lamination, weaving, or inlaying. Preferably, it includes a decellularized small intestinal submucosa matrix material. The degradable polymer material can be selected from PGA, PLA, or PLGA, or a combination of these materials, such as a combination obtained by lamination, weaving, or inlaying.

[0067] The specific structure, working principle, and beneficial effects of the medical clamp provided by the embodiments of the present disclosure can refer to the medical clamp described in any of the above embodiments, and will not be repeated here.

[0068] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. References to the common and similar parts between the various embodiments will be sufficient. For the systems or devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, their descriptions are relatively simple; for relevant details, refer to the descriptions of the methods.

[0069] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

Claims

1. A medical clamp, characterized in that: include: a clamping arm assembly, the clamping arm assembly being provided in pairs and comprising a first clamping arm and a second clamping arm, configured to clamp the atrial appendage under the action of an external force; a clamping body connected to the clamping arm assembly and configured to enable the first clamping arm to be in contact with the surface of the second clamping arm; A patch structure is detachably connected to the clamp arm assembly and is configured to isolate the clamp arm assembly from the atrial appendage; the patch structure is made of a degradable polymer material or a degradable animal-derived biological material. wherein the patch structure comprises a first surface, a second surface, and a third surface, configured to semi-enclose the clamping arm assembly; The first surface extends along a first direction, covers the inner side of the clamping arm assembly, and is configured to directly contact the auricle, and the flattened length of the first surface along the first direction is not less than twice the length of the first clamping arm or the second clamping arm; The clamping body has an initial state and an open state. In response to the clamping body being in the initial state, the first clamping arm is in contact with the surface of the second clamping arm; in response to the clamping body being in the open state, the first clamping arm is separated from the surface of the second clamping arm. When the clamping body is in the initial state, the patch structure is flatly wrapped around the clamping arm assembly, and a redundant portion is still folded in the hollow formed between the clamping body and the clamping arm assembly; The clamping body includes: a guide wing, which is arranged on a side of the clamping body away from the clamping arm assembly. The guide wing is detachably connected to the external force applying member and is configured to switch the clamping body between the initial state and the open state under the action of the external force applying member.

2. The medical clip according to claim 1, wherein: The surface of the first clamping arm and / or the second clamping arm is provided with a protrusion, which is configured to increase the friction between the clamping arm assembly and the patch structure.

3. The medical clip according to claim 2, wherein: A recessed portion is provided on the surface of the first clamping arm and / or the second clamping arm. The recessed portion matches the shape and structure of the raised portion and is configured to be engaged with the raised portion to increase the contact area between the patch structure and the auricle.

4. The medical clip according to claim 1, wherein: The clamping body comprises: The through holes are arranged in pairs and configured to allow a portion of the clamping arm assembly to pass through the clamping body so as to connect the clamping arm assembly to the clamping body.

5. The medical clip according to claim 1, wherein: The free end of the clamping body is tilted in a direction away from the clamping arm assembly, and is configured to assist the clamping body in switching from the open state to the initial state.

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