An arterial sheath spreader and surgical instrument

Abstract

The utility model discloses an artery sheath membrane dilator and surgical instrument, specifically includes: the one end of first clamp body is bent and is provided with first support pole, second clamp body is hinged with first clamp body, and one end is bent and is provided with second support pole, one end rotation is established on first clamp body of spacing link, and the other end is slidably connected with second clamp body, and elastic part is set up on spacing link, and the both ends of elastic part are respectively with first clamp body and second clamp body abut. The utility model discloses through being bent and being provided with first support pole and second support pole respectively at the end of hinged first clamp body and second clamp body, is convenient for inserting artery blood vessel and sheath membrane between formation support, still have spacing link and elastic part on first clamp body and second clamp body, and elastic part provides open spring force, and it is convenient for operator control strength, and spacing link then limits expansion limit, avoids causing damage to blood vessel and sheath membrane, the utility model discloses cooperation surgical scissors can easily complete to artery sheath membrane's dilatation and shearing, simplifies the operation, and reduces the risk.

Description

Technical Field

[0001] This utility model relates to the field of surgical instrument technology, and in particular to an arterial sheath expander and surgical instrument. Background Technology

[0002] The arterial sheath protects the artery. Since the artery and sheath are close together, if the gap is too small when cutting the sheath during arterial surgery, the artery can easily be damaged. Due to the high pressure in the artery, bleeding from this injury may be projectile, obstructing the surgical field and requiring time for hemostasis or suturing, thus prolonging the operation. Therefore, when cutting the arterial sheath, it is crucial to ensure sufficient space between the cuts.

[0003] In existing technologies, microforceps are often used to process and cut the arterial sheath. Microforceps can help expand and cut the arterial sheath, but the expansion distance is limited at one time. Moreover, during repeated operations of expansion and cutting, the tip of the microforceps is too sharp and can easily puncture the artery, causing damage. At the same time, the expansion force of the microforceps needs to be manually controlled. Therefore, the process of cutting the arterial sheath with microforceps is cumbersome and risky.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] To address the problems in existing technologies where cutting the arterial sheath using traditional microforceps requires repeated expansion and cutting, during which the tip of the microforceps can easily puncture the artery, and the expansion force of the microforceps needs to be manually controlled, making the process of cutting the arterial sheath with microforceps cumbersome and risky, this utility model provides an arterial sheath expander and surgical instrument.

[0006] This utility model is achieved through the following technical solution:

[0007] An arterial sheath retractor, wherein the arterial sheath retractor comprises:

[0008] The first clamp body has a first support rod bent at one end;

[0009] The second clamp body is hinged to the first clamp body. One end of the second clamp body is bent and provided with a second support rod. The second support rod is positioned corresponding to the first support rod.

[0010] A limiting rod, one end of which is rotatably mounted on the first clamp body, and the other end is slidably connected to the second clamp body;

[0011] An elastic element is sleeved on the limiting rod, and its two ends abut against the first clamp body and the second clamp body, respectively.

[0012] The arterial sheath expander wherein the first support rod and the second support rod are symmetrically arranged and are arranged along a predetermined arc.

[0013] The arterial sheath expander wherein the first support rod has a semi-circular cross-sectional shape, and the second support rod has a semi-circular cross-sectional shape that matches the cross-sectional shape and size of the first support rod.

[0014] The arterial sheath retractor, wherein the end of the first strut facing away from the first clamp body is shaped like a quarter sphere;

[0015] The end of the second strut that faces away from the second clamp body is shaped like a quarter sphere;

[0016] The first clamp body and the first support rod are integrally formed;

[0017] The second clamp body and the second support rod are integrally formed.

[0018] The arterial sheath expander, wherein the first clamp body is provided with a mounting part, one end of the limiting rod is clamped in the mounting part and connected to the rotating shaft of the mounting part;

[0019] The second clamp body is provided with a mounting hole, which is an oblong hole, and the other end of the limiting rod is slidably sleeved in the mounting hole.

[0020] The arterial sheath dilator, wherein the limiting rod has a thread at one end corresponding to the second clamp body, the limiting rod includes a locking block, the locking block is rotatably connected to the thread, and the locking block is used to limit the opening distance between the first clamp body and the second clamp body.

[0021] The arterial sheath dilator, wherein the elastic element is a spring, a limiting tenon is provided on the outer side of the second clamp body corresponding to the mounting hole, one end of the elastic element is fixedly sleeved on the mounting part, and the other end is fixedly sleeved on the limiting tenon.

[0022] The arterial sheath dilator, wherein a first handle is provided on the end of the first clamp body opposite to the first support rod;

[0023] A second handle is provided at the end of the second clamp body opposite to the second support rod;

[0024] The first grip and the second grip are respectively provided with operating holes.

[0025] The arterial sheath retractor, wherein the first clamp body has a first tenon on the side facing the second clamp body, and the second clamp body has a second tenon on the side facing the first clamp body. The first tenon and the second tenon are arranged opposite to each other, and the first tenon and the second tenon are used to limit the hinge range of the first clamp body and the second clamp body.

[0026] A surgical instrument, wherein the surgical instrument includes an arterial sheath dilator as described in any one of the above.

[0027] The beneficial effects of this utility model are as follows: By bending and setting a first support rod and a second support rod at the ends of the hinged first and second clamping bodies respectively, the first and second support rods facilitate insertion between the arterial blood vessel and the sheath to form support. The first and second clamping bodies are also provided with a limiting rod and an elastic element sleeved on the outside of the limiting rod. The elastic element provides opening elastic force, which makes it easy for the operator to control the force, while the limiting rod limits the expansion limit and avoids damage to the blood vessel and sheath. This utility model, together with surgical scissors, can easily complete the opening and cutting of the arterial sheath, simplifying the operation and reducing the risk. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the arterial sheath expander of this utility model;

[0029] Figure 2 This is an exploded view of the structure of the arterial sheath expander of this utility model;

[0030] Figure 3 This utility model of an arterial sheath dilator is in Figure 1 Enlarged view of node A structure in the image;

[0031] Figure 4 This is a schematic diagram showing the usage of the arterial sheath expander of this utility model.

[0032] exist Figures 1 to 4 In the middle: 100, first clamp body; 101, operating hole; 110, first support rod; 120, first handle; 121, first tenon; 130, mounting part; 200, second clamp body; 210, second support rod; 220, second handle; 221, second tenon; 230, mounting hole; 240, limiting tenon; 300, limiting rod; 310, thread; 320, locking block; 400, elastic element; 500, sheath; 600, artery. Detailed Implementation

[0033] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] In existing technologies, microforceps are often used to process and cut the arterial sheath. Microforceps can help to expand and cut the arterial sheath, but the expansion distance is limited at one time. Moreover, during repeated operations of expansion and cutting, the tip of the microforceps is too sharp and can easily puncture the artery, causing damage. In addition, the expansion force of the microforceps needs to be manually controlled. Therefore, the process of cutting the arterial sheath with microforceps is cumbersome and risky.

[0037] In view of the above-mentioned problems in the prior art, the present invention provides an arterial sheath dilator, such as... Figure 1 As shown, the arterial sheath retractor includes: a first clamp body 100, one end of which is bent and provided with a first support rod 110; a second clamp body 200, which is hinged to the first clamp body 100, one end of which is bent and provided with a second support rod 210, the second support rod 210 corresponding to the position of the first support rod 110; a limiting rod 300, one end of which is rotatably mounted on the first clamp body 100, and the other end is slidably connected to the second clamp body 200; and an elastic element 400, which is sleeved on the limiting rod 300, and both ends of the elastic element 400 abut against the first clamp body 100 and the second clamp body 200, respectively.

[0038] This invention features a first support rod 110 and a second support rod 210, respectively, bent at the ends of the hinged first clamp body 100 and second clamp body 200. The first support rod 110 and the second support rod 210 facilitate insertion between the arterial vessel and the sheath to form support. The first clamp body 100 and the second clamp body 200 are also provided with a limiting rod 300 and an elastic element 400 sleeved on the outside of the limiting rod 300. The elastic element 400 provides opening elasticity, making it easy for the operator to control the force, while the limiting rod 300 limits the expansion limit to avoid damage to the blood vessel and sheath. This invention, when used with surgical scissors, can easily open and cut the arterial sheath, simplifying the operation and reducing risks.

[0039] In the above embodiments, such as Figure 1 As shown, the main body of the arterial sheath retractor of this utility model consists of a first clamp body 100, a second clamp body 200, a limiting rod 300, and an elastic element 400. The first clamp body 100 and the second clamp body 200 are hinged together, forming a structure similar to surgical forceps and scissors in the prior art; that is, it is A-shaped when closed and X-shaped when open. The difference from the prior art is that, to facilitate the retraction of the arterial sheath, a first support rod 110 is provided at one end of the first clamp body 100, and a limiting rod 300 is provided at one end of the second clamp body 200. The second support rod 210, the first support rod 110 and the second support rod 210 correspond to each other and are bent relative to the first clamp body 100 and the second clamp body 200 respectively. When the first clamp body 100 and the second clamp body 200 are closed, the first support rod 110 and the second support rod 210 abut against each other and come together, which can separate the artery and the sheath. When the first clamp body 100 and the second clamp body 200 are opened, the first support rod 110 and the second support rod 210 separate, which can open up the space between the artery and the sheath, so that the sheath can be cut with surgical scissors.

[0040] In this embodiment, the limiting rod 300 restricts the opening range of the first clamp body 100 and the second clamp body 200. One end of the limiting rod 300 is rotatably mounted on the first clamp body 100, and the other end of the limiting rod 300 is slidably connected to the second clamp body 200. Through the limiting effect of the limiting rod 300, damage to arteries or sheaths caused by excessive opening range of the first clamp body 100 and the second clamp body 200 can be avoided. On the other hand, in order to facilitate medical staff to control the opening range of the first clamp 100 and the second clamp 200, in this embodiment, an elastic element 400 is also sleeved on the outside of the limiting rod 300. The two ends of the elastic element 400 abut against the first clamp 100 and the second clamp 200 respectively. The elastic element 400 is used to provide elastic force to open the first clamp 100 and the second clamp 200. Thus, during the operation, medical staff only need to provide a pressing force to the first clamp 100 and the second clamp 200 to control the opening of the first clamp 100 and the second clamp 200, which reduces the operation difficulty compared with the micro-forceps in the prior art.

[0041] In one possible embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the first support rod 110 and the second support rod 210 are symmetrically arranged. This arrangement ensures that when the first clamp body 100 and the second clamp body 200 are closed, the first support rod 110 and the second support rod 210 can completely fit together, reducing space. The fully fitted first support rod 110 and the second support rod 210 can easily enter the area between the artery and the sheath, thereby achieving the aforementioned opening operation. In this embodiment, to avoid punctures caused by the first support rod 110 and the second support rod 210 contacting the artery during operation, the first support rod 110 and the second support rod 210 are also arranged along a predetermined arc. In actual operation, the ends of the first support rod 110 and the second support rod 210 can face towards the sheath, allowing the arc-shaped sides of the first support rod 110 and the second support rod 210 to contact the outer wall of the artery, effectively protecting the outer wall of the artery.

[0042] In another possible embodiment of this utility model, such as Figure 1 and Figure 3As shown, the cross-sectional shape of the first support rod 110 can be specifically set as a semi-circle. Correspondingly, the cross-sectional shape of the second support rod 210 is set as a semi-circle that matches the cross-sectional shape of the first support rod 110. In actual use, when the first clamp body 100 and the second clamp body 200 are in the closed state, the first support rod 110 and the second support rod 210 abut against each other and combine to form a complete column, which facilitates puncture between the artery and the sheath to form a separation. When the first clamp body 100 and the second clamp body 200 are in the open state, the first support rod 110 and the second support rod 210 separate from each other and expand the space on both sides, thereby achieving the effect of opening up the space. During the process, since the cross-sectional shape of the first support rod 110 and the second support rod 210 are both semi-circular, the opening process is relatively gentle through the arc surface contact, which can prevent damage to the artery and the sheath.

[0043] In another possible embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the end of the first support rod 110 facing away from the first clamp body 100 is preferably set to a quarter-sphere shape. Correspondingly, the end of the second support rod 210 facing away from the second clamp body 200 is also preferably set to a quarter-sphere shape. When the first support rod 110 and the second support rod 210 abut against each other, the two quarter-spheres combine to form a hemisphere. The arc surface of the hemisphere is used to puncture the position between the artery and the sheath. In this embodiment, this setting method is beneficial for separating the artery and the sheath, and can avoid scratching the artery during the operation, thereby reducing the operation risk.

[0044] In the above embodiments, the first clamp body 100 and the first support rod 110 are preferably integrally formed. Correspondingly, the second clamp body 200 and the second support rod 210 are also integrally formed. This arrangement improves the structural strength of the first support rod 110 and the second support rod 210, preventing breakage or deformation during use and ensuring operational stability. Furthermore, in this embodiment, the first clamp body 100, the first support rod 110, the second clamp body 200, and the second support rod 210 are preferably made of stainless steel to facilitate disinfection, extend service life, and ensure material strength.

[0045] In another possible embodiment of this utility model, such as Figure 2As shown, to facilitate the installation of the aforementioned limiting rod 300, a mounting portion 130 is further provided on the first clamp body 100. The mounting portion 130 protrudes towards one side of the second clamp body 200 and includes a centrally located sliding groove area. One end of the aforementioned limiting rod 300 is clamped within the mounting portion 130 and connected via a rotating shaft, thereby allowing the end of the limiting rod 300 to be rotatably connected to the mounting portion 130. Correspondingly, a mounting hole 230 is also provided on the second clamp body 200. The other end of the limiting rod 300 is slidably sleeved in the mounting hole 230 to accommodate the position adjustment of the first clamp 100 and the second clamp 200 during the closing or opening process. In this embodiment, in order to ensure that the limiting rod 300 moves smoothly in the mounting hole 230 and can adapt to different angles when the first clamp 100 and the second clamp 200 are open, the mounting hole 230 can be set as an oval hole, and the width of the mounting hole 230 is larger than the diameter of the limiting rod 300, so as to facilitate the movement of the limiting rod 300.

[0046] Furthermore, such as Figure 2 As shown, in order to limit the opening range of the first clamp body 100 and the second clamp body 200 by means of the limiting rod 300, in this embodiment the limiting rod 300 also includes a locking block 320. A thread 310 is provided on one end of the limiting rod 300 corresponding to the second rod body. The locking block 320 is rotatably mounted on the limiting rod 300 by means of the thread 310. In a specific setting, the locking block 320 is located on the side of the second clamp body 200 away from the first clamp body 100. Medical personnel can adjust the position of the locking block 320 on the limiting rod 300 to adjust the maximum opening angle of the first clamp body 100 and the second clamp body 200, thereby limiting the maximum expansion range of the sheath during operation.

[0047] Furthermore, since the position of the limiting rod 300 will adapt to the different opening angles of the first clamp 100 and the second clamp 200, in order to ensure the locking effect of the locking block 320, a protruding structure can be provided on the part of the second clamp 200 corresponding to the mounting hole 230 and on the side of the second clamp 200 away from the first clamp 100. The cross-section of the protruding structure is preferably set to be semi-circular, and it is used to contact the locking block 320 in actual use to achieve the locking position effect.

[0048] In another possible embodiment of this utility model, such as Figure 2 As shown, in order to install the elastic element 400, in this embodiment, a limiting tenon 240 is also provided on the second clamp body 200 at the position corresponding to the outer side of the mounting hole 230. There can be two limiting tenons 240, which are located on opposite sides of the mounting hole 230. In actual installation, the elastic element 400 can be specifically set as a spring. One end of the spring is fixedly set on the mounting part 130, and the other end is sleeved on the limiting tenon 240, thereby fixing both ends of the spring.

[0049] In actual use, since the two ends of the elastic element 400 are fixed and it is sleeved on the limiting rod 300, when the medical staff presses the first clamp 100 and the second clamp 200, the elastic element 400 is compressed and accumulates elastic potential energy. At this time, the first support rod 110 and the second support rod 210 are combined to puncture the position between the artery and the sheath. When the medical staff gradually reduces the force of pressing the first clamp 100 and the second clamp 200, the first clamp 100 and the second clamp 200 open under the action of the elastic element 400. The first support rod 110 and the second support rod 210 realize the function of opening the sheath, and finally reach the opening limit position under the locking action of the locking block 320.

[0050] In another possible embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the first clamp body 100 is provided with a first handle 120 at the end opposite to the first support rod 110. Correspondingly, the second clamp body 200 is provided with a second handle 220 at the end opposite to the first support rod 110. Both the first handle 120 and the second handle 220 are provided with an operating hole 101. The operating hole 101 is adapted to the diameter of an adult finger. When performing the arterial sheath opening operation, medical staff can insert two fingers into the two operating holes 101 respectively to achieve the effect of precise operation and stable grip.

[0051] In another possible embodiment of this utility model, such as Figure 2 As shown, a first tenon 121 is provided on the side of the first clamp 100 facing the second clamp 200, and correspondingly, a second tenon 221 is provided on the side of the second clamp 200 facing the first clamp 100. The first tenon 121 and the second tenon 221 are arranged opposite to each other. In actual use, the first tenon 121 and the second tenon 221 are used to limit the closed limit position of the first clamp 100 and the second clamp 200, thereby limiting the hinge range of the first clamp 100 and the second clamp 200. In this embodiment, when the first clamp 100 and the second clamp 200 are in a closed state, the first tenon 121 and the second tenon 221 abut against each other. At this time, the first support rod 110 and the second support rod 210 form a combination. In this embodiment, by setting the first tenon 121 and the second tenon 221, excessive force can be avoided at the contact part of the first support rod 110 and the second support rod 210, so as to prevent the first support rod 110 and the second support rod 210 from deforming after multiple uses and forming a combination effect.

[0052] Based on the above embodiments, the actual usage process of this utility model's arterial sheath dilator is as follows:

[0053] First, medical staff apply force to the first clamp 100 and the second clamp 200 to close the first clamp 100 and the second clamp 200. At this time, the first support rod 110 and the second support rod 210 combine to form a column. Then, medical staff puncture the position between the artery 600 and the sheath 500 through the ends of the first support rod 110 and the second support rod 210.

[0054] like Figure 4 As shown, after puncture, the clamping force on the first clamp 100 and the second clamp 200 is gradually reduced, causing the first clamp 100 and the second clamp 200 to open under the action of the elastic element 400. This allows the first support rod 110 and the second support rod 210 to open the sheath 500. Due to the limiting effect of the locking block 320, the extent of the opening of the sheath 500 can be adjusted according to the actual situation of the patient. Finally, with the cooperation of surgical scissors, the sheath 500 can be cut. The process is simple and easy to operate, reducing the risk of damaging arterial blood vessels.

[0055] Based on the above embodiments, the present invention also provides a surgical instrument, which includes the arterial sheath retractor described in any one of the above embodiments. The arterial sheath retractor includes: a first clamp body, one end of which is bent and provided with a first support rod; a second clamp body, which is hinged to the first clamp body, one end of which is bent and provided with a second support rod, the second support rod being positioned corresponding to the first support rod; a limiting rod, one end of which is rotatably disposed on the first clamp body, and the other end being slidably connected to the second clamp body; and an elastic element, which is sleeved on the limiting rod, and both ends of the elastic element abut against the first clamp body and the second clamp body, respectively. This invention features a first and a second support rod, respectively bent at the ends of a hinged first and second clamping body. These support rods facilitate insertion between the arterial vessel and its sheath, providing support. A limiting rod and an elastic element sleeved on the outside of the limiting rod are also provided on the first and second clamping bodies. The elastic element provides opening force, allowing the operator to control the force, while the limiting rod restricts the expansion limit, preventing damage to the vessel and sheath. This invention, when used with surgical scissors, can easily open and cut the arterial sheath, simplifying the operation and reducing risks.

[0056] In summary, this utility model provides an arterial sheath retractor and surgical instrument, wherein the arterial sheath retractor includes: a first clamp body, one end of which is bent and provided with a first support rod; a second clamp body, which is hinged to the first clamp body, one end of which is bent and provided with a second support rod, the second support rod corresponding to the position of the first support rod; a limiting rod, one end of which is rotatably mounted on the first clamp body, and the other end of which is slidably connected to the second clamp body; and an elastic element, which is sleeved on the limiting rod, with both ends of the elastic element abutting against the first clamp body and the second clamp body respectively. This invention features a first and a second support rod, respectively bent at the ends of a hinged first and second clamping body. These support rods facilitate insertion between the arterial vessel and its sheath, providing support. A limiting rod and an elastic element sleeved on the outside of the limiting rod are also provided on the first and second clamping bodies. The elastic element provides opening force, allowing the operator to control the force, while the limiting rod restricts the expansion limit, preventing damage to the vessel and sheath. This invention, when used with surgical scissors, can easily open and cut the arterial sheath, simplifying the operation and reducing risks.

[0057] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An arterial sheath retractor, characterized in that, The arterial sheath retractor includes: The first clamp body has a first support rod bent at one end; The second clamp body is hinged to the first clamp body. One end of the second clamp body is bent and provided with a second support rod. The second support rod is positioned corresponding to the first support rod. A limiting rod, one end of which is rotatably mounted on the first clamp body, and the other end is slidably connected to the second clamp body; An elastic element is sleeved on the limiting rod, and both ends of the elastic element abut against the first clamp body and the second clamp body, respectively. The first strut and the second strut are arranged along a predetermined arc. The first support rod has a semi-circular cross-sectional shape, and the second support rod has a semi-circular cross-sectional shape that matches the cross-sectional shape and size of the first support rod. The end of the first support rod that is away from the first clamp body is shaped like a quarter sphere; The end of the second strut that faces away from the second clamp body is shaped like a quarter sphere; The first clamp body is provided with a mounting part, and one end of the limiting rod is clamped in the mounting part and connected to the rotating shaft of the mounting part; The second clamp body is provided with a mounting hole, which is an oblong hole, and the other end of the limiting rod is slidably sleeved in the mounting hole; The limiting rod is provided with a thread at one end corresponding to the second clamp body. The limiting rod includes a locking block, which is rotatably connected to the thread. The locking block is used to limit the opening distance between the first clamp body and the second clamp body. The elastic element is a spring. A limiting tenon is provided on the outer side of the second clamp body corresponding to the mounting hole. One end of the elastic element is fixedly sleeved on the mounting part, and the other end is fixedly sleeved on the limiting tenon. The first clamp body has a first tenon on the side facing the second clamp body, and the second clamp body has a second tenon on the side facing the first clamp body. The first tenon and the second tenon are arranged opposite to each other, and the first tenon and the second tenon are used to limit the hinge range of the first clamp body and the second clamp body. When the first strut and the second strut abut against each other, the two quarter-spheres combine to form a hemisphere; The first and second support rods are symmetrically arranged; the first clamp body is integrally formed with the first support rod; the second clamp body is integrally formed with the second support rod; the hemispherical arc surface is used for puncturing the position between the artery and the sheath; force is applied to the first and second clamp bodies to close them, and the first and second support rods combine to form a column. The position between the artery and the sheath is punctured through the ends of the first and second support rods. After puncture, the clamping force on the first and second clamp bodies is continuously reduced, so that the first and second clamp bodies open under the action of the elastic element, and the first and second support rods open the sheath.

2. The arterial sheath retractor according to claim 1, characterized in that, A first handle is provided on the end of the first clamp body opposite to the first support rod; A second handle is provided at the end of the second clamp body opposite to the second support rod; The first grip and the second grip are respectively provided with operating holes.

3. A surgical instrument, characterized in that, The surgical instrument includes the arterial sheath dilator as described in any one of claims 1-2.

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