Medical clamp and ventricular connection assembly

Abstract

The present application relates to a medical clamp. The medical clamp can clamp a ventricular connection component, which has a clamping ring. The medical clamp includes a first clamp body and a second clamp body, wherein the first clamp body includes a first clamp handle and a first clamping part connected to the first clamp handle, and the first clamping part has a first inner peripheral surface; the second clamp body includes a second clamp handle and a second clamping part connected to the second clamp handle, the second clamping part is arranged opposite to the first clamping part, and the second clamping part has a second inner peripheral surface facing the first inner peripheral surface. The first clamp handle and the second clamp handle can be rotatably connected, and the first inner peripheral surface and the second inner peripheral surface can be clamped in cooperation with the outer periphery of the clamping ring; wherein at least one of the first inner peripheral surface and the second inner peripheral surface is set as an inner concave arc surface or an outer convex arc surface, so as to be able to adapt to the contoured surface arranged on the outer periphery of the clamping ring to clamp the clamping ring. The above-mentioned medical clamp can improve the convenience and success rate of clamping the ventricular connection component.

Description

Technical Field

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

[0002] After the ventricular connection assembly is sutured to the outer wall of the human heart, the ventricular assist device needs to be installed on the ventricular connection assembly to achieve implantation of the ventricular assist device into the human heart. During this process, the ventricular connection assembly needs to be clamped and positioned by a medical clamp. However, the existing medical clamp is inconvenient to use, resulting in high difficulty in surgical operation, and needs to be improved. Utility Model Content

[0003] Based on this, the present application provides a medical clamp and a ventricular connection assembly that can be easily used and reduce the difficulty of surgical operations.

[0004] In a first aspect, the present application provides a medical clamp capable of clamping a ventricular connection component, wherein the ventricular connection component has a clamping ring, and the medical clamp comprises:

[0005] A first pliers body comprises a first pliers handle and a first clamping portion connected to the first pliers handle, wherein the first clamping portion has a first inner peripheral surface; and

[0006] The second clamp body comprises a second clamp handle and a second clamping portion connected to the second clamp handle, the second clamping portion is arranged opposite to the first clamping portion, and the second clamping portion has a second inner peripheral surface facing the first inner peripheral surface; the first clamp handle and the second clamp handle are rotatably connected, and the first inner peripheral surface and the second inner peripheral surface can be matched and clamped on the outer periphery of the clamp ring;

[0007] Wherein, at least one of the first inner circumferential surface and the second inner circumferential surface is configured as an inner concave arc surface or an outer convex arc surface so as to be adapted to a contoured surface arranged on the outer circumference of the clamping ring to clamp the clamping ring.

[0008] The technical solution is further described below:

[0009] In one embodiment, the first inner circumferential surface forms a first arc line on the cross section of the first clamping portion, and the center angle corresponding to the first arc line is 95° to 105°; and / or the second inner circumferential surface forms a second arc line on the cross section of the second clamping portion, and the center angle corresponding to the second arc line is 95° to 105°.

[0010] In one embodiment, the first inner circumferential surface forms a first arc line on the cross section of the first clamping portion, and the radius of the first arc line is 0.9㎜~1.1㎜; and / or, the second inner circumferential surface forms a second arc line on the cross section of the second clamping portion, and the radius of the second arc line is 0.9㎜~1.1㎜.

[0011] In one embodiment, the first clamping portion has a first width at one end away from the first clamp handle, and the first width is 1.95㎜~2.3㎜; and / or, the second clamping portion has a second width at one end away from the second clamp handle, and the second width is 1.95㎜~2.3㎜.

[0012] In one embodiment, the first clamping portion has a first end surface at one end away from the first clamp handle, the first end surface is connected to one end of the first inner peripheral surface, and a first chamfer or a first rounded corner is provided at the connection between the first end surface and the first inner peripheral surface;

[0013] The second clamping portion has an end away from the second clamp handle with a second end surface, the second end surface is connected to one end of the second inner peripheral surface, and a second chamfer or a second fillet is provided at the connection between the second end surface and the second inner peripheral surface.

[0014] In one embodiment, a first chamfer is provided at the connection between the first end surface and the first inner circumferential surface, and a second chamfer is provided at the connection between the second end surface and the second inner circumferential surface. The angles of the first chamfer and the second chamfer are 30° to 60°.

[0015] In one embodiment, the first clamp handle includes a first main body section, a first middle section rotatably connected to the second clamp handle, and a first connecting section connecting the first middle section and the first clamping portion, the first connecting section having a first inner side surface; the second clamp handle includes a second main body section, a second middle section rotatably connected to the first clamp handle, and a second connecting section connecting the second middle section and the second clamping portion, the second connecting section having a second inner side surface, wherein:

[0016] A first notch groove is provided at a connection between the first inner side surface and the first inner peripheral surface; and / or a second notch groove is provided at a connection between the second inner side surface and the second inner peripheral surface.

[0017] In one embodiment, the first connecting section of the first pliers handle is provided with the first notch groove, and the second connecting section of the second pliers handle is provided with the second notch groove; and the first notch groove has a first groove wall facing the second notch groove, the first groove wall is connected to the first inner circumference, the second notch groove has a second groove wall facing the first notch groove, the second groove wall is connected to the second inner circumference, and the gap between the first groove wall and the second groove wall is 3 mm to 4 mm.

[0018] In one of the embodiments, the relative rotation of the first clamp handle and the second clamp handle can drive the first clamping part and the second clamping part to move closer to or away from each other, so that the medical clamp is correspondingly in a clamping state or an open state; when the medical clamp is in the clamping state, the first inner circumferential surface and the second inner circumferential surface cooperate to form a clamping surface clamped on the outer circumference of the clamping ring, and the projection of the clamping surface in the thickness direction of the first clamping part forms an arc contour, and the central angle corresponding to the arc contour is 180°~300°.

[0019] In a second aspect, the present application further provides a ventricular connection assembly, the ventricular connection assembly comprising a sewing ring and a clamping ring arranged on the sewing ring, the outer periphery of the clamping ring is provided with a contoured surface, the contoured surface is provided as an outer convex arc surface, so as to be adapted to the inner concave arc surface of any of the above-mentioned medical clamps and to be clamped by the medical clamps;

[0020] Alternatively, the contoured surface is configured as an inner concave arc surface to match with the outer convex arc surface of any of the above-mentioned medical clamps and be clamped by the medical clamps.

[0021] In the above-mentioned medical clamp, the first clamping part has a first inner peripheral surface, the second clamping part has a second inner peripheral surface on the side facing the first inner peripheral surface, and the first inner peripheral surface and the second inner peripheral surface can be clamped on the outer periphery of the clamping ring. In this way, when clamping the ventricular connection component, the medical clamp can be directly clamped on the outer periphery of the clamping ring of the ventricular connection component through the first inner peripheral surface and the second inner peripheral surface, without extending the medical clamp between the suture ring and the clamping ring of the ventricular connection component, so the clamping operation of the medical clamp will not be blocked by the uneven suture ring, which improves the success rate of the clamping of the medical clamp, greatly reduces the difficulty of surgical operation, and improves the convenience of surgery. The first inner peripheral surface and the second inner peripheral surface in the shape of an inner concave arc surface or an outer convex arc surface can better adapt to the contour surface of the outer periphery of the clamping ring, ensuring that the first inner peripheral surface and the second inner peripheral surface can be closely combined with the contour surface of the clamping ring, thereby improving the clamping stability. At the same time, when the inner concave arc surface and the outer convex arc surface just come into contact, the two are roughly in oblique contact, and thus have a guiding effect, which is beneficial for the inner concave arc surface and the outer convex arc surface to fit into place, thereby facilitating the first clamping part and the second clamping part to quickly fit into place with the clamping ring, further facilitating the operation of medical staff, and the manufacturing process of the inner concave arc surface design is simple and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0025] Figure 1 This is a schematic diagram of the structure of the medical clamp provided in this application clamping a ventricular connection assembly.

[0026] Figure 2 for Figure 1 Schematic diagram of the structure when the medical clamp described in is separated from the ventricular connection component.

[0027] Figure 3 for Figure 1 A top view of the medical clamp shown in FIG. 1 holding a ventricular connection assembly.

[0028] Figure 4 for Figure 3 A cross-sectional view of the medical clamp and ventricular connection assembly along the AA direction shown in FIG.

[0029] Figure 5 for Figure 4 A partial enlarged view of point B shown in FIG.

[0030] Figure 6 for Figure 4 A partial enlarged view of point C shown in FIG.

[0031] Figure 7 FIG. 4 is a top view of a medical clamp according to an embodiment.

[0032] Figure 8 for Figure 7 A local enlarged view of Q shown in FIG.

[0033] Fig. 9 for Figure 7 A local enlarged view of P shown in FIG.

[0034] Fig.10 for Figure 7 A cross-sectional view of the medical clamp shown in FIG.

[0035] Fig.11 for Fig.10 A local enlarged view of point E shown in FIG.

[0036] Fig.12 for Fig.10 A partial enlarged view of point F shown in FIG.

[0037] Fig.13 A schematic diagram of the structure of the ventricular connection component provided in this application.

[0038] Description of reference numerals:

[0039] 1. Medical clamp; 10. First clamp body; 11. First clamp handle; 112. First main body section; 1121. First ring body; 114. First middle section; 116. First connecting section; 1162. First inner side surface; 1164. First notch groove; 1165. First groove wall; 12. First clamping portion; 121. First inner peripheral surface; 122. First end surface; 1162. First inner side surface; 124. First arc line; 20. Second clamp body; 21. Second clamp handle; 212, second main body section; 2121, second ring body; 214, second middle section; 216, second connecting section; 2162, second inner side surface; 2164, second notch groove; 2165, second groove wall; 22, second clamping portion; 221, second inner peripheral surface; 222, second end surface; 2162, second inner side surface; 224, second arc line; 30, ventricular connecting assembly; 31, clamping ring; 312, contour surface; 32, suture ring; 33, connecting arm. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0041] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0042] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0046] During the implantation of a ventricular assist device, it is usually necessary to first suture the ventricular connection assembly to the human heart, and then install the ventricular assist device on the ventricular connection assembly. During this process, for a traditional medical clamp, it is necessary to extend the end of the medical clamp between the suture ring and the clamping ring of the ventricular connection assembly to clamp and position the ventricular connection assembly. However, at this time, the suture ring of the ventricular connection assembly has been sutured to the heart. Due to the restraint of the suture thread and the unevenness of the heart tissue itself, the suture ring sutured to the heart will be uneven, which will make it difficult for the medical clamp to extend between the suture ring and the clamping ring, especially in the narrow space of the chest cavity, which is more inconvenient for medical staff to operate, greatly increasing the operation time and surgical risks. In addition, in order to ensure that the medical clamps can be smoothly inserted between the sewing ring and the clamping ring of the ventricular connection assembly, a certain gap must be reserved between the sewing ring and the clamping ring, which increases the overall thickness of the ventricular connection assembly. After the ventricular assist device is installed in the ventricular connection assembly, the height of the ventricular assist device protruding from the outer surface of the heart will increase, increasing the risk of contact between the ventricular assist device and other organs in the chest cavity.

[0047] Based on this, see Figure 1 as well as Figure 2The present application provides a medical clamp 1 capable of clamping a ventricular connection component 30, wherein the ventricular connection component 30 has a clamping ring 31, and the clamping ring 31 includes a contoured surface 312. Specifically, the medical clamp 1 of one embodiment includes a first clamp body 10 and a second clamp body 20, wherein the first clamp body 10 includes a first clamp handle 11 and a first clamping portion 12 connected to the first clamp handle 11, and the first clamping portion 12 has a first inner peripheral surface 121. The second clamp body 20 includes a second clamp handle 21 and a second clamping portion 22 connected to the second clamp handle 21, the second clamping portion 22 is arranged opposite to the first clamping portion 12, and the second clamping portion 22 has a second inner peripheral surface 221 facing the first inner peripheral surface 121. The first clamp handle 11 and the second clamp handle 21 are rotatably connected, and the first inner circumferential surface 121 and the second inner circumferential surface 221 can cooperate to clamp the outer circumference of the clamping ring 31; wherein, at least one of the first inner circumferential surface 121 and the second inner circumferential surface 221 is configured as an inner concave arc surface or an outer convex arc surface, so as to be able to adapt to the contoured surface 312 set on the outer circumference of the clamping ring 31 to clamp the clamping ring 31.

[0048] In the above-mentioned medical clamp 1, the first clamping part 12 has a first inner peripheral surface 121 on the side facing the second clamping part 22, and the second clamping part 22 has a second inner peripheral surface 221 on the side facing the first clamping part 12, and the first inner peripheral surface 121 and the second inner peripheral surface 221 can cooperate to form a clamping surface clamped on the contour surface 312 of the clamping ring 31 of the ventricular connection component 30. In this way, when clamping the ventricular connection component 30, the medical clamp 1 can be directly clamped on the contour surface 312 of the clamping ring 31 of the ventricular connection component 30 through the clamping surface, without extending the medical clamp 1 between the suture ring 32 and the clamping ring 31 of the ventricular connection component 30, so the clamping operation of the medical clamp 1 will not be blocked by the uneven suture ring 32, thereby improving the success rate of clamping of the medical clamp 1, greatly reducing the difficulty of surgical operation, and improving the convenience of surgery. In addition, since there is no need to extend the end of the medical clamp 1 between the sewing ring 32 and the clamping ring 31, no gap is required between the sewing ring 32 and the clamping ring 31, which is beneficial to thinning the overall thickness of the ventricular connection assembly 30. On the basis of keeping the height of the ventricular assist device unchanged, the height of the ventricular assist device protruding from the outer surface of the heart after being installed on the ventricular connection assembly 30 is reduced, thereby reducing the risk of the ventricular assist device contacting other organs in the chest cavity.

[0049] See also Figures 3 to 6In one embodiment, both the first inner circumferential surface 121 and the second inner circumferential surface 221 are concave arc surfaces. Specifically, the concave arc surface refers to an arc surface that is concave radially outward (i.e., toward the inside of the first clamping portion 12) of the circle where the first inner circumferential surface 121 is located. In one embodiment, when the clamping ring 31 of the ventricular connection component 30 is an outer convex arc surface, the first inner circumferential surface 121 and the second inner circumferential surface 221 with the concave arc surface shape can better adapt to the outer convex arc surface of the clamping ring 31, ensuring that the first inner circumferential surface 121 and the second inner circumferential surface 221 can be tightly combined with the contoured surface 312 of the clamping ring 31, thereby improving the clamping stability. At the same time, when the inner concave arc surface and the outer convex arc surface just come into contact, the two are roughly in oblique contact, so it has a guiding effect, which is beneficial for the inner concave arc surface and the outer convex arc surface to fit into place, thereby facilitating the first clamping part 12 and the second clamping part 22 to quickly fit into place with the clamping ring 31, further facilitating the operation of medical staff, and the manufacturing process of the inner concave arc surface design is simple and the production efficiency is high.

[0050] It is understandable that in other embodiments, the first inner peripheral surface 121 and the second inner peripheral surface 221 are both convex arc surfaces, wherein the convex arc surface refers to an arc surface that is concave radially inward (i.e., toward the space between the first clamping portion 12 and the second clamping portion 22) of the circle where the first inner peripheral surface 121 is located. Correspondingly, the contour surface 312 of the clamping ring 31 is a concave arc surface. In this way, the clamping stability of the first inner peripheral surface 121 and the second inner peripheral surface 221 and the contour surface 312 of the clamping ring 31 can also be improved, and the first clamping portion 12 and the second clamping portion 22 are facilitated to quickly fit the clamping ring 31 in place.

[0051] The profiling surface 312 refers to a surface that simulates and imitates the target surface, so the profiling surface 312 can effectively fit the target surface. In the present application, the first inner peripheral surface 121 and the second inner peripheral surface 221 are both target surfaces, so the profiling surface 312 is a surface that simulates and imitates the first inner peripheral surface 121 or the second inner peripheral surface 221.

[0052] A first ring body 1121 is provided at one end of the first clamp handle 11 away from the first clamping portion 12, and a second ring body 2121 is provided at one end of the second clamp handle 21 away from the second clamping portion 22. The first ring body 1121 and the second ring body 2121 are both substantially elliptical, and can be inserted by the operator's fingers to facilitate operation of the medical clamp 1. The first clamping portion 12 and the second clamping portion 22 are substantially C-shaped and can be clamped on both sides of the clamping ring 31, respectively.

[0053] In one embodiment, the relative rotation of the first clamp handle 11 and the second clamp handle 21 can drive the first clamp portion 12 and the second clamp portion 22 to move closer to each other or farther away from each other, so that the medical clamp 1 is in a clamping state or an open state accordingly. Specifically, when the first clamp portion 12 and the second clamp portion 22 are closer to each other, the medical clamp 1 is in a clamping state to clamp the ventricular connection component 30; when the first clamp portion 12 and the second clamp portion 22 are farther away from each other, the medical clamp 1 is in an open state to release the ventricular connection component 30.

[0054] The first clamp handle 11 includes a first main body section 112, a first middle section 114 rotatably connected to the second clamp handle 21, and a first connecting section 116 connecting the first middle section 114 and the first clamping portion 12, that is, the first clamp handle 11 includes the first main body section 112, the first middle section 114, the first connecting section 116 and the first clamping portion 12 connected in sequence. The first main body section 112 is provided with a first ring body 1121. The first connecting section 116 has a first inner side surface 1162.

[0055] The second clamp handle 21 includes a second main body section 212, a second middle section 214 rotatably connected to the first clamp handle 11, and a second connecting section 216 connecting the second middle section 214 and the second clamping portion 22. That is, the second clamp handle 21 includes the second main body section 212, the second middle section 214, the second connecting section 216 and the second clamping portion 22 connected in sequence. Among them, the second main body section 212 is provided with a second ring body 2121, and the second middle section 214 is rotatably connected to the first middle section 114. The second connecting section 216 has a second inner side surface 2162, and the second inner side surface 2162 is arranged opposite to the first inner side surface 1162.

[0056] In the present application, a first notch groove 1164 is provided at the connection between the first inner side surface 1162 and the first inner peripheral surface 121, and a second notch groove 2164 is provided at the connection between the second inner side surface 2162 and the second inner peripheral surface 221, that is, the medical clamp 1 is provided with both the first notch groove 1164 and the second notch groove 2164. In one embodiment, the medical clamp 1 may also be provided with one of the first notch groove 1164 and the second notch groove 2164.

[0057] The first connection section 116 of the first clamp handle 11 is provided with a first notch groove 1164, and the second connection section 216 of the second clamp handle 21 is provided with a second notch groove 2164; and the first notch groove 1164 has a first groove wall 1165 facing the second notch groove 2164, the first groove wall 1165 is connected to the first inner peripheral surface 121, and the second notch groove 2164 has a second groove wall 2165 facing the first notch groove 1164, and the second groove wall 2165 is connected to the second inner peripheral surface 221. Further, the first groove wall 1165 and the second groove wall 2165 are spaced and arranged opposite to each other. In this way, a gap is formed between the first groove wall 1165 and the second groove wall 2165 to prevent the suture from being cut when the medical clamp 1 clamps the ventricular connection component 30. In this embodiment, the gap G between the first groove wall 1165 and the second groove wall 2165 is 3 mm to 4 mm, that is, 3 mm ≤ G ≤ 4 mm, so that the clamping ring 31 can be clamped without cutting the suture. Specifically, when the gap G is less than 3 mm, there is a risk of cutting the suture when the medical clamp 1 clamps the ventricular connection assembly 30; when the gap G is greater than 4 mm, the length of the first inner circumferential surface 121 or the second inner circumferential surface 221 will be reduced, which is not conducive to clamping the clamping ring 31.

[0058] Further, see Figure 7 When the medical clamp 1 is in the clamping state, the first inner circumference 121 and the second inner circumference 221 cooperate to form a clamping surface clamped on the contour surface 312 of the clamping ring 31, and the projection of the clamping surface in the thickness direction of the first clamping portion 12 forms an arc contour, so that the clamping surface can better adapt to the circular contour of the clamping ring 31, thereby improving the clamping stability of the medical clamp 1. Among them, the "thickness direction of the first clamping portion 12" refers to the direction parallel to the Figure 7 Optionally, in one embodiment, the central angle β corresponding to the arc profile of the clamping surface is 180° to 300°, that is, 180°≤β≤300°, so that when the medical clamp 1 clamps the ventricular connection assembly 30, the first clamping portion 12 and the second clamping portion 22 can partially surround the clamping ring 31, so that the ends of the first clamping portion 12 and the second clamping portion 22 can limit the clamping ring 31 and restrict the movement of the clamping ring 31 in its radial direction, which can prevent the clamping ring 31 from easily detaching from the medical clamp 1 and prevent the medical clamp 1 from interfering with the connecting arm 33 of the clamping ring 31. Furthermore, when the central angle β is less than 180°, the medical clamp 1 is easily separated from the clamping ring 31 along the radial direction of the clamping ring 31; when the central angle β is greater than 300°, the first clamping part 12 and the second clamping part 22 of the medical clamp 1 are easy to touch the connecting arm 33 of the clamping ring 31, limiting the space available for medical staff to operate and increasing the difficulty of operating the medical clamp 1.

[0059] See also Fig.10 as well as Fig.11Optionally, in one embodiment, the first inner circumferential surface 121 forms a first arc line 124 on the cross section of the first clamping portion 12, and the central angle α corresponding to the first arc line 124 is 95° to 105°, that is, 95°≤α≤105°. The "cross section of the first clamping portion 12" refers to the cross section obtained by cutting the first clamping portion 12 along a plane perpendicular to the length direction of the first clamping portion 12, for example Figure 7 The cross section DD in the figure. By configuring the center angle α corresponding to the first arc line 124 to be 95° to 105°, it is ensured that the first clamping portion 12 and the clamping ring 31 have a suitable contact area, which facilitates the clamping of the clamping ring 31. Furthermore, when the center angle α is greater than 105°, the guiding effect of the concave arc surface is not obvious, and the first clamping portion 12 and the clamping ring 31 cannot be quickly matched in place; when the center angle α is less than 95°, the thickness of the first clamping portion 12 will be too small, so that the contact area between the first clamping portion 12 and the clamping ring 31 is too small, and there is a risk of loosening.

[0060] Furthermore, the radius of the first arc line 124 is 0.9 mm to 1.1 mm, that is, the radius of the first arc line 124 is greater than or equal to 0.9 mm and less than or equal to 1.1 mm, which can also ensure that the first clamping portion 12 and the clamping ring 31 have a suitable contact area, thereby ensuring the clamping force of the medical clamp 1. Specifically, if the radius of the first arc line 124 is less than 0.9 mm or greater than 1.1 mm, the first clamping portion 12 and the clamping ring 31 are in line contact, so that the contact surface between the first clamping portion 12 and the clamping ring 31 is small, the clamping force of the medical clamp 1 on the clamping ring 31 is insufficient, and there is a risk of separation of the medical clamp 1 from the clamping ring 31.

[0061] Similarly, see Fig.12 In one embodiment, the second inner circumferential surface 221 forms a second arc line 224 on the cross section of the second clamping portion 22, and the center angle θ corresponding to the second arc line 224 is 95° to 105°, that is, 95°≤θ≤105°. The "cross section of the second clamping portion 22" refers to the cross section obtained by cutting the second clamping portion 22 along a plane perpendicular to the length direction of the second clamping portion 22. By configuring the center angle θ corresponding to the second arc line 224 to be 95° to 105°, it is ensured that the second clamping portion 22 and the clamping ring 31 have a suitable contact area, which facilitates the clamping of the clamping ring 31. Furthermore, when the central angle θ is greater than 105°, the guiding effect of the concave arc surface is not obvious, and the second clamping portion 22 and the clamping ring 31 cannot be quickly mated into place; when the central angle θ is less than 95°, the thickness of the second clamping portion 22 will be too small, making the contact area between the second clamping portion 22 and the clamping ring 31 too small, and there is a risk of loosening.

[0062] Furthermore, the radius of the second arc line 224 is 0.9 mm to 1.1 mm, that is, the radius of the second arc line 224 is greater than or equal to 0.9 mm and less than or equal to 1.1 mm, which can also ensure that the second clamping portion 22 and the clamping ring 31 have a suitable contact area, thereby ensuring the clamping force of the medical clamp 1. Specifically, if the radius of the second arc line 224 is less than 0.9 mm or greater than 1.1 mm, the second clamping portion 22 and the clamping ring 31 are in line contact, so that the contact surface between the second clamping portion 22 and the clamping ring 31 is small, the clamping force of the medical clamp 1 on the clamping ring 31 is insufficient, and there is a risk of separation of the medical clamp 1 from the clamping ring 31.

[0063] See also Figure 7 In one embodiment, the first clamping portion 12 has a first width W1 at one end away from the first clamp handle 11, and the first width W1 is 1.95㎜~2.3㎜, that is, 1.95㎜≤W1≤2.3㎜; wherein "the first width W1" refers to the dimension of the first clamping portion 12 in the radial direction along the arc contour of the clamping surface. The second clamping portion 22 has a second width W2 at one end away from the second clamp handle 21, and the second width W2 is 1.95㎜~2.3㎜, that is, 1.95㎜≤W2≤2.3㎜; wherein "the second width W2" refers to the dimension of the second clamping portion 22 in the radial direction along the arc contour of the clamping surface. By setting the first width W1 and the second width W2 to 1.95 mm to 2.3 mm, the maximum outer diameters of the first clamping part 12 and the second clamping part 22 can be reduced while ensuring the strength of the first clamping part 12 and the second clamping part 22, so that when the medical clamp 1 clamps the clamping ring 31, the distance between the outer ring of the first clamping part 12 and the outer ring of the suture ring 32 and the distance between the outer ring of the second clamping part 22 and the outer ring of the suture ring 32 are larger, that is, the suture area of ​​the suture ring 32 is larger, making it more convenient for medical staff to operate. Specifically, when the width W1 of the first clamping part 12 and / or the width W2 of the second clamping part 22 are less than 1.95 mm, the strength of the first clamping part 12 and the second clamping part 22 is difficult to ensure, and there is a risk of breaking. When the width W1 of the first clamping portion 12 or the width W2 of the second clamping portion 22 is greater than 2.3 mm, the outer diameter of the first clamping portion 12 and the outer diameter of the second clamping portion 22 are too large, which may easily touch the suture thread head, and is not conducive to the clamping operation.

[0064] Continue to see Figure 7 In one embodiment, the first clamping portion 12 has a first end surface 122 at one end away from the first clamp handle 11, and a first chamfer or a first rounded corner is provided at the connection between the first end surface 122 and the first inner peripheral surface 121, so as to ensure a smooth transition between the connection between the first end surface 122 and the first inner peripheral surface 121, thereby avoiding scratching the ventricular connection component 30. Figure 8Optionally, in one embodiment, a first chamfer C1 is provided at the connection between the first end face 122 and the first inner circumferential surface 121, and the size of the first chamfer C1 is 30° to 60°, that is, 30°≤C1≤60°. When the length of the first inner circumferential surface 121 remains unchanged, the smaller the first chamfer C1, the smaller the area of ​​the first end face 122. Conversely, the larger the first chamfer C1, the larger the area of ​​the first end face 122. Specifically, when the first chamfer C1 is less than 30°, the end of the first clamping portion 12 will be sharp, which may cause damage to the patient's tissue or medical staff. When the first chamfer C1 is greater than 60°, it may easily scratch the ventricular connection component 30. Therefore, when the size of the first chamfer C1 is 30° to 60°, it can avoid scratching the ventricular connection component 30 and improve the safety performance of the medical clamp 1 during use.

[0065] Similarly, in one embodiment, the second clamping portion 22 has a second end surface 222 at one end away from the second clamp handle 21, and a second chamfer or a second rounded corner is provided at the connection between the second end surface 222 and the second inner peripheral surface 221, so as to ensure a smooth transition between the connection between the second end surface 222 and the second inner peripheral surface 221, thereby avoiding scratching the ventricular connection component 30. Fig. 9 Optionally, in one embodiment, a second chamfer C2 is provided at the connection between the second end surface 222 and the second inner circumferential surface 221, and the second chamfer C2 is 30° to 60°, that is, 30°≤C2≤60°. Specifically, when the second chamfer C2 is less than 30°, the end of the second clamping portion 22 is sharp, which may cause damage to the patient's tissue or medical staff; when the second chamfer C2 is greater than 60°, the ventricular connection component 30 may be easily scratched.

[0066] See also Figure 7 In one embodiment, the connection between the first groove wall 1165 and the first inner peripheral surface 121 is provided with a third chamfer or a third fillet, so that the connection between the first groove wall 1165 and the first inner peripheral surface 121 is ensured to be smooth, thereby avoiding scratching the ventricular connection component 30. Similarly, in one embodiment, the connection between the second groove wall 2165 and the second inner peripheral surface 221 is provided with a fourth chamfer or a fourth fillet, so that the connection between the second groove wall 2165 and the second inner peripheral surface 221 is ensured to be smooth, thereby avoiding scratching the ventricular connection component 30.

[0067] See also Fig.13 The present application also provides a ventricular connection assembly 30, which includes a sewing ring 32 and a clamping ring 31 arranged on the sewing ring 32, and the outer periphery of the clamping ring 31 is provided with a contour surface 312, and the contour surface 312 is set as an outer convex arc surface to adapt to the inner concave arc surface of the medical clamp 1, and is clamped by the medical clamp 1;

[0068] Alternatively, the contoured surface 312 is configured as an inner concave arc surface to match the outer convex arc surface of the medical clamp 1 and be clamped by the medical clamp 1 .

[0069] In this embodiment, the profiling surface 312 is set as a convex arc surface, the first inner peripheral surface 121 and the second inner peripheral surface 221 are both concave arc surfaces, and the convex arc surface is adapted to the concave arc surface. In other embodiments, the profiling surface 312 can be a concave arc surface, and correspondingly, the first inner peripheral surface 121 and the second inner peripheral surface 221 are both convex arc surfaces.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A medical clamp capable of clamping a ventricular connection assembly, wherein the ventricular connection assembly has a clamping ring, characterized in that: The medical clamp comprises: A first pliers body comprises a first pliers handle and a first clamping portion connected to the first pliers handle, wherein the first clamping portion has a first inner peripheral surface; and The second clamp body comprises a second clamp handle and a second clamping portion connected to the second clamp handle, the second clamping portion is arranged opposite to the first clamping portion, and the second clamping portion has a second inner peripheral surface facing the first inner peripheral surface; the first clamp handle and the second clamp handle are rotatably connected, and the first inner peripheral surface and the second inner peripheral surface can be matched and clamped on the outer periphery of the clamp ring; Wherein, at least one of the first inner circumferential surface and the second inner circumferential surface is configured as an inner concave arc surface or an outer convex arc surface so as to be adapted to a contoured surface arranged on the outer circumference of the clamping ring to clamp the clamping ring.

2. The medical clamp according to claim 1, characterized in that: The first inner circumferential surface forms a first arc line on the cross section of the first clamping portion, and the center angle corresponding to the first arc line is 95°~105°; and / or the second inner circumferential surface forms a second arc line on the cross section of the second clamping portion, and the center angle corresponding to the second arc line is 95°~105°.

3. The medical clamp according to claim 1, characterized in that: The first inner circumferential surface forms a first arc line on the cross section of the first clamping portion, and the radius of the first arc line is 0.9㎜~1.1㎜; and / or, the second inner circumferential surface forms a second arc line on the cross section of the second clamping portion, and the radius of the second arc line is 0.9㎜~1.1㎜.

4. The medical clamp according to claim 1, characterized in that: The first clamping portion has a first width at one end away from the first clamp handle, and the first width is 1.95 mm to 2.3 mm; and / or the second clamping portion has a second width at one end away from the second clamp handle, and the second width is 1.95 mm to 2.3 mm.

5. The medical clamp according to claim 1, characterized in that: The first clamping portion has a first end surface at one end away from the first clamp handle, the first end surface is connected to one end of the first inner peripheral surface, and a first chamfer or a first rounded corner is provided at the connection between the first end surface and the first inner peripheral surface; The second clamping portion has an end away from the second clamp handle with a second end surface, the second end surface is connected to one end of the second inner peripheral surface, and a second chamfer or a second fillet is provided at the connection between the second end surface and the second inner peripheral surface.

6. The medical clamp according to claim 5, characterized in that: A first chamfer is provided at the connection between the first end surface and the first inner circumferential surface, and a second chamfer is provided at the connection between the second end surface and the second inner circumferential surface. The angles of the first chamfer and the second chamfer are 30° to 60°.

7. The medical clamp according to claim 5, characterized in that: The first clamp handle comprises a first main body section, a first middle section rotatably connected to the second clamp handle, and a first connecting section connecting the first middle section and the first clamping portion, the first connecting section having a first inner side surface; the second clamp handle comprises a second main body section, a second middle section rotatably connected to the first clamp handle, and a second connecting section connecting the second middle section and the second clamping portion, the second connecting section having a second inner side surface, wherein: A first notch groove is provided at a connection between the first inner side surface and the first inner peripheral surface; and / or a second notch groove is provided at a connection between the second inner side surface and the second inner peripheral surface.

8. The medical clamp according to claim 7, characterized in that: The first connecting section of the first pliers handle is provided with the first notch groove, and the second connecting section of the second pliers handle is provided with the second notch groove; and the first notch groove has a first groove wall facing the second notch groove, the first groove wall is connected to the first inner circumferential surface, and the second notch groove has a second groove wall facing the first notch groove, the second groove wall is connected to the second inner circumferential surface, and the gap between the first groove wall and the second groove wall is 3 mm to 4 mm.

9. The medical clamp according to any one of claims 1 to 8, characterized in that: The relative rotation of the first clamp handle and the second clamp handle can drive the first clamping part and the second clamping part to move closer to or away from each other, so that the medical clamp is correspondingly in a clamping state or an open state; when the medical clamp is in the clamping state, the first inner circumferential surface and the second inner circumferential surface cooperate to form a clamping surface clamped on the outer circumference of the clamping ring, and the projection of the clamping surface in the thickness direction of the first clamping part forms an arc contour, and the central angle corresponding to the arc contour is 180°~300°.

10. A ventricular connection assembly, characterized in that: The ventricular connection assembly comprises a sewing ring and a clamping ring arranged on the sewing ring, the outer periphery of the clamping ring is provided with a contoured surface, the contoured surface is arranged as an outer convex arc surface, so as to be adapted to the inner concave arc surface of the medical clamp according to any one of claims 1 to 9, and to be clamped by the medical clamp; Alternatively, the contoured surface is configured as an inner concave arc surface to match the outer convex arc surface of the medical clamp according to any one of claims 1 to 9, and to be clamped by the medical clamp.

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