Cardiovascular clamp

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a cardiovascular clamp which comprises a first clamp arm, a second clamp arm and an elastic piece, the first clamp arm and the second clamp arm are hinged to each other to form a pipe clamp body, the first clamp arm is provided with a first recess, the second clamp arm is provided with a second recess, and the elastic piece is arranged in the first recess. The first recess corresponds to the second recess, the elastic piece is arranged on the first clamp arm, a part of the elastic piece is located in the first recess, and the elastic piece is configured to deform when being subjected to external force, so that the part, located in the first recess, of the elastic piece deforms inwards in a concave manner or deforms outwards in a convex manner; according to the scheme, external force is applied to the elastic pieces, the elastic pieces are subjected to inward concave deformation or outward convex deformation in the first concave parts, so that the bending postures of the elastic pieces in the first concave parts are changed to adapt to intubation tubes of different sizes, the application range of the cardiovascular clamp can be effectively widened, and in addition, the cardiovascular clamp is convenient to use. In this way, the situation that the clamping end of the cardiovascular clamp exceeds the cannula too long is avoided, and the cardiovascular clamp has the advantage of being convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a cardiovascular clamp. Background Art

[0002] In clinical cardiac or vascular surgery, the best way to treat myocardial infarction patients is usually to cannulate the blood vessels. The cannulation operation is usually performed using a cardiovascular clamp. A groove for clamping the cannula is provided at the end of the cardiovascular clamp, but the size of the groove is fixed, so many different types of clamps are usually required.

[0003] In related technologies, such as the patent document with publication number CN207768885U, multiple groups of recesses for accommodating cannulas are often provided at the clamping end of the cardiovascular clamp. The recess design helps to increase the contact area between the cardiovascular clamp and the cannula, thereby improving the stability and firmness of the clamping. The multiple groups of recesses can make the cardiovascular clamp flexible and better adapt to cannulas of different sizes, thereby improving its scope of application and effectiveness. However, in actual use, since the multiple recesses are arranged in sequence, when the cannula is clamped using the recess near the hinge, the clamping end extends too far beyond the cannula. The portion of the cardiovascular clamp that extends beyond the cannula easily interferes with the patient's cavity wall, which is not conducive to the operator's use and operation, resulting in poor ease of use. Utility Model Content

[0004] The utility model discloses a cardiovascular clamp to solve the above technical problems existing in the related technology.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] The present application provides a cardiovascular clamp, which includes a first clamp arm, a second clamp arm and a spring, wherein the first clamp arm and the second clamp arm are hinged to each other to form a tube clamp body, a first recess is provided on the first clamp arm, and a second recess is provided on the second clamp arm, and the first recess corresponds to the second recess.

[0007] The spring sheet is provided on the first clamp arm, and part of the spring sheet is located in the first recess. The spring sheet is configured to deform when subjected to external force, so that the part of the spring sheet located in the first recess deforms inwardly or convexly.

[0008] Furthermore, the spring piece includes a first connecting section, a curved section, and a second connecting section connected in sequence, wherein the first connecting section is disposed on the distal side of the first recess, and the second connecting section is movably disposed on the proximal side of the first recess. The first clamp arm is provided with a plurality of teeth extending along its extension direction, and the second connecting section is provided with an abutment portion that abuts against the teeth to limit the bending state of the curved section within the first recess.

[0009] Furthermore, an unlocking portion adjacent to the abutting portion is provided on the second connecting section, and the unlocking portion is bent away from the first clamp arm. The unlocking portion is configured to drive the abutting portion to separate from the tooth portion when subjected to a force acting away from the first clamp arm.

[0010] Furthermore, the tooth portion has a first inclined surface and a second inclined surface facing each other, the first inclined surface faces away from the curved section, and the second inclined surface faces the curved section. The inclination angle of the first inclined surface relative to the first direction is smaller than the inclination angle of the second inclined surface relative to the first direction, and the first direction is the extension direction of the second connecting section toward the first connecting section.

[0011] Furthermore, the chamfer of the first recess on the distal side is smaller than the chamfer of the first recess on the proximal side, so that when the spring is subjected to an external force in a first direction, the bent section is limitedly abutted against the inner wall of the first recess on the distal side, and the bent section slides with the inner wall of the first recess on the proximal side.

[0012] Furthermore, the first clamp arm is provided with an anti-slip groove, and along the first direction, the first connecting section is limitedly engaged with the anti-slip groove.

[0013] Furthermore, the first connecting section has a first wing portion, and the first wing portion is bent to wrap around the first clamp arm;

[0014] And / or, the second connecting section has a second wing portion, and the second wing portion is bent to wrap around the first clamp arm.

[0015] Furthermore, the second wing portion includes a first sub-wing and a second sub-wing, the first sub-wing and the second sub-wing are connected to surround the first clamp arm, and the first sub-wing and the second sub-wing are engaged with each other.

[0016] Furthermore, along the extension direction of the first forceps arm from its proximal end to its distal end, the first connecting section is distributed on the distal side of the second connecting section.

[0017] Furthermore, the first recess has a size greater than that of the second recess.

[0018] The technical solution adopted by the utility model can achieve the following beneficial effects:

[0019] The cardiovascular clamp of the present application applies external force to the spring piece, causing the portion of the spring piece within the first recess to undergo an inward concave deformation or an outward convex deformation, thereby changing the bending posture of the spring piece within the first recess to adapt to cannulas of different sizes, which can effectively improve the applicability of the cardiovascular clamp. In addition, this method avoids the situation where the clamping end of the cardiovascular clamp extends beyond the cannula too long, and has the characteristic of convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of a cardiovascular clamp according to an embodiment of the present application;

[0022] Figure 2 This is a schematic structural diagram of a spring in an embodiment of the present application;

[0023] Figure 3 yes Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0024] Figure 4 is a structural schematic diagram of a first clamp arm according to an embodiment of the present application;

[0025] Figure 5 yes Figure 4 A partial enlarged schematic diagram of point B in the middle.

[0026] In the picture:

[0027] 100, first clamp arm; 110, first recess; 120, tooth portion; 121, first inclined surface; 122, second inclined surface; 130, anti-slip groove; 200, second clamp arm; 210, second recess; 300, spring piece; 310, first connecting section; 311, first wing; 320, curved section; 330, second connecting section; 331, abutting portion; 332, unlocking portion; 333, second wing; 3331, first sub-wing; 3332, second sub-wing. DETAILED DESCRIPTION

[0028] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0030] The present application discloses a cardiovascular clamp. Figures 1 to 5 , the cardiovascular clamp provided in the embodiment of the present application is described in detail through specific embodiments and their application scenarios.

[0031] See Figure 1 、 Figure 2 and Figure 3 The embodiment of the present application discloses a cardiovascular clamp, which includes a first clamp arm 100, a second clamp arm 200 and a spring piece 300, wherein the first clamp arm 100 and the second clamp arm 200 are hinged to each other to form a tube clamp body, and the tube clamp body forms a clamping opening on its distal side. The operator can hold the proximal side of the tube clamp body to operate to control the clamping opening to clamp or release the cannula.

[0032] In the examples of this application, see Figure 3 A first recess 110 is provided on the first clamp arm 100, and a second recess 210 is provided on the second clamp arm 200. The first recess 110 and the second recess 210 are both located in the aforementioned clamping opening. For example, the first recess 110 and the second recess 210 are provided at the end positions of the tube clamp body, and the first recess 110 and the second recess 210 correspond to each other. When the cannula is clamped, the cannula is located in the clamping area formed by the first recess 110 and the second recess 210.

[0033] In the examples of this application, see Figure 2 and Figure 3The spring clip 300 is disposed on the first clamp arm 100, and a portion of the spring clip 300 is located within the first recess 110. The spring clip 300 is configured to deform when subjected to an external force, with the portion of the spring clip 300 located within the first recess 110 deforming inwardly toward a concave position or outwardly toward a convex position. Specifically, when clamping a cannula of a larger diameter, an external force can be applied to the spring clip 300, causing the portion located within the first recess 110 to deform inwardly toward a concave position, thereby providing more space for the cannula of the larger diameter. When clamping a cannula of a smaller diameter, an external force can be applied to the spring clip 300, causing the portion located within the first recess 110 to deform outwardly toward a convex position, allowing the spring clip 300 to abut against the cannula of the smaller diameter, thereby maintaining clamping stability.

[0034] Based on the above technical solution, when the cardiovascular clamp of the embodiment of the present application is used, an external force is applied to the spring piece 300, so that the part of the spring piece 300 in the first recess 110 undergoes an inward concave deformation or an outward convex deformation, thereby changing the bending posture of the spring piece 300 in the first recess 110 to adapt to cannulas of different sizes, which can effectively improve the applicability of the cardiovascular clamp. In addition, this method avoids the situation where the clamping end of the cardiovascular clamp exceeds the cannula too long, and has the characteristic of convenient operation.

[0035] In the examples of this application, please continue to refer to Figure 2 The spring piece 300 includes a first connecting section 310, a curved section 320, and a second connecting section 330, which are sequentially connected. The first connecting section 310 is located distally of the first recess 110, a portion of the curved section 320 is located within the first recess 110, and the second connecting section 330 is located proximally of the first recess 110. The second connecting section 330 is movable relative to the first clamp arm 100. The movement of the second connecting section 330 causes the curved section 320 to deform inwardly into a concave position or outwardly into a convex position within the first recess 110. Specifically, when a thrust is applied toward the first connecting section 310 to the second connecting section 330, the curved section 320 is squeezed and deformed inwardly into a concave position. When a tensile force is applied away from the first connecting section 310 to the second connecting section 330, the curved section 320 is pulled and deformed outwardly into a convex position. It should be noted that in order to make the deformation of the bending section 320 controllable when subjected to external force, the bending section 320 can be pre-bent. For example, the bending section 320 can be pre-bent by stamping, and the bending direction of the bending section 320 is toward the first recess 110.

[0036] In the examples of this application, see Figure 4 and Figure 5The first pliers arm 100 is provided with a plurality of teeth 120 extending along its extension direction. For example, the teeth 120 are provided on the side of the first pliers arm 100 facing away from the first recess 110. The second connecting section 330 is provided with an abutment portion 331 that bends and extends toward the first pliers arm 100. The abutment portion 331 abuts against the teeth 120 under the action of its own elasticity, so that the bent section 320 can maintain a certain bending state in the first recess 110. It can be understood that when the abutment portion 331 abuts and cooperates with different teeth 120, the bending state of the bent section 320 in the first recess 110 is different.

[0037] In a further technical solution, an unlocking portion 332 is further provided on the second connecting section 330, and the unlocking portion 332 is adjacent to the abutting portion 331, and the unlocking portion 332 is bent and extended back to the first clamp arm 100. When a force is applied to the unlocking portion 332 back to the first clamp arm 100, the abutting portion 331 can be disengaged from the abutting state with the tooth portion 120 as the unlocking portion 332 is lifted. After completing the unlocking of the abutting portion 331, the operator can apply force to the distal side through the unlocking portion 332 to push the bent section 320 inwardly to cause a concave deformation, or can apply force to the proximal side through the unlocking portion 332 to pull the bent section 320 outwardly to cause a convex deformation.

[0038] In a further technical solution, the tooth portion 120 has a first inclined surface 121 and a second inclined surface 122 opposite to each other, the first inclined surface 121 faces away from the curved section 320, and the second inclined surface 122 faces the curved section 320. The inclination angle of the first inclined surface 121 relative to the first direction is smaller than the inclination angle of the second inclined surface 122 relative to the first direction. The first direction is the extension direction of the second connecting section 330 toward the first connecting section 310. With such a setting, the stability of the abutment between the tooth portion 120 and the abutting portion 331 can be improved. At the same time, after the abutting portion 331 is unlocked, when a thrust toward the first connecting section 310 is applied to the second connecting section 330, the smoothness of the sliding of the second connecting section 330 can be improved.

[0039] In a further technical solution, the chamfer of the first recess 110 on the distal side is smaller than the chamfer of the first recess 110 on the proximal side, so that when the spring piece 300 is subjected to an external force in the first direction, the bent section 320 is limited and abuts against the inner wall of the first recess 110 on the distal side, and the bent section 320 slides and fits with the inner wall of the first recess 110 on the proximal side. Under such a setting, when a thrust is applied to the first connecting section 310 by the second connecting section 330, the bent section 320 can undergo the desired concave deformation with the proximal side of the first recess 110 as the fulcrum, that is, such a setting can improve the stability of the deformation of the bent section 320.

[0040] In this embodiment of the present application, the first and second arms 100, 200 are further provided with anti-slip grooves 130. These grooves are designed to reduce friction between the pipe clamp body and the clamped object, preventing slippage. In this embodiment of the present application, the anti-slip grooves 130 on the first arm 100 are located distally of the first connecting section 310. Along a first direction, the first connecting section 310 and the anti-slip grooves 130 engage with each other in a limited manner, thereby preventing the spring clip 300 from sliding off the first arm. In this embodiment of the present application, the first direction is the direction of extension of the first arm 100 from its proximal end to its distal end.

[0041] In this embodiment of the present application, the first connecting section 310 includes a first wing 311, which is bent and configured to wrap around the first caliper arm 100. The second connecting section 330 includes a second wing 333, which is bent and configured to wrap around the first caliper arm 100. This arrangement ensures that the first and second wings 311, 333 wrap around the first caliper arm 100, ensuring that the spring clip 300 is stably mounted on the first caliper arm 100 and prevents it from detaching. Furthermore, the spring clip 300 can be stamped and bent to wrap around the outside of the first caliper arm 100, making it easy to manufacture and assemble.

[0042] For further technical solutions, please continue to refer to Figure 2 The second wing 333 includes a first sub-wing 3331 and a second sub-wing 3332. The first sub-wing 3331 and the second sub-wing 3332 are connected to surround the first clamp arm 100, and the first sub-wing 3331 and the second sub-wing 3332 are engaged with each other. In this way, when the unlocking portion 332 contacts the abutting portion 331 and the tooth portion 120, based on the mutual engagement of the first sub-wing 3331 and the second sub-wing 3332, the two can form a restraining effect on each other, thereby avoiding excessive deformation of the first sub-wing 3331 and the second sub-wing 3332, thereby affecting the abutting effect between the abutting portion 331 and the tooth portion 120.

[0043] In the embodiment of the present application, the recess size of the first recess 110 is larger than the recess size of the second recess 210. In this way, during the deformation of the spring piece 300, the first recess 110 provides sufficient deformation space for the curved section 320 of the spring piece 300, so that it has a larger adjustment range to adapt to cannulas of different sizes.

[0044] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0045] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cardiovascular clamp, characterized in that: It comprises a first clamp arm (100), a second clamp arm (200) and a spring piece (300); wherein: The first clamp arm (100) and the second clamp arm (200) are hinged to each other to form a pipe clamp body, the first clamp arm (100) is provided with a first recess (110), the second clamp arm (200) is provided with a second recess (210), and the first recess (110) corresponds to the second recess (210); The spring piece (300) is provided on the first clamp arm (100), and a portion of the spring piece (300) is located in the first recess (110). The spring piece (300) is configured to deform when subjected to an external force, so that the portion of the spring piece (300) located in the first recess (110) deforms inwardly concavely or outwardly convexly.

2. The cardiovascular clamp according to claim 1, characterized in that: The elastic piece (300) comprises a first connecting section (310), a curved section (320), and a second connecting section (330) connected in sequence, wherein the first connecting section (310) is arranged on the distal side of the first recess (110), and the second connecting section (330) is movably arranged on the proximal side of the first recess (110); The first clamp arm (100) is provided with a plurality of teeth (120) extending along its extension direction, and the second connecting section (330) is provided with an abutment portion (331), the abutment portion (331) abutting against the teeth (120) to limit the bending state of the bending section (320) in the first recess (110).

3. The cardiovascular clamp according to claim 2, characterized in that: The second connecting section (330) is further provided with an unlocking portion (332) adjacent to the abutting portion (331), the unlocking portion (332) being bent away from the first clamp arm (100), and the unlocking portion (332) being configured to drive the abutting portion (331) to separate from the tooth portion (120) when subjected to a force acting away from the first clamp arm (100).

4. The cardiovascular clamp according to claim 3, characterized in that: The tooth portion (120) has a first inclined surface (121) and a second inclined surface (122) facing each other, the first inclined surface (121) facing away from the curved section (320), and the second inclined surface (122) facing the curved section (320), and an inclination angle of the first inclined surface (121) relative to a first direction is smaller than an inclination angle of the second inclined surface (122) relative to the first direction, and the first direction is an extension direction of the second connecting section (330) toward the first connecting section (310).

5. The cardiovascular clamp according to claim 2, characterized in that: The chamfer of the first recess (110) on the distal side is smaller than the chamfer of the first recess (110) on the proximal side, so that when the spring piece (300) is subjected to an external force in a first direction, the curved section (320) is limitedly abutted against the inner wall of the first recess (110) on the distal side, and the curved section (320) is slidably fitted with the inner wall of the first recess (110) on the proximal side.

6. The cardiovascular clamp according to claim 5, characterized in that: An anti-slip groove (130) is provided on the first clamp arm (100), and along the first direction, the first connecting section (310) is limitedly engaged with the anti-slip groove (130).

7. The cardiovascular clip according to claim 2, characterized in that: The first connecting section (310) has a first wing portion (311), and the first wing portion (311) is bent to surround the first clamp arm (100); And / or, the second connecting section (330) has a second wing portion (333), and the second wing portion (333) is bent to surround the first clamp arm (100).

8. The cardiovascular clip according to claim 7, characterized in that: The second wing portion (333) includes a first sub-wing (3331) and a second sub-wing (3332), wherein the first sub-wing (3331) and the second sub-wing (3332) are connected to surround the first clamp arm (100), and the first sub-wing (3331) and the second sub-wing (3332) are engaged with each other.

9. The cardiovascular clamp according to any one of claims 2 to 8, characterized in that: Along the extension direction of the first clamp arm (100) from its proximal end to its distal end, the first connecting section (310) is distributed on the distal side of the second connecting section (330).

10. The cardiovascular clamp according to any one of claims 2 to 8, characterized in that: The recess size of the first recess (110) is greater than the recess size of the second recess (210).

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