Cutter of ultrasonic knife and ultrasonic knife

Abstract

The utility model discloses a cutter of an ultrasonic knife and the ultrasonic knife, and the cutter of the ultrasonic knife is characterized in that a first clamping arm is provided with a first clamping surface and a first end surface; the second clamping arm is provided with a rotating center and can rotate around the rotating center relative to the first clamping arm; the gasket is arranged on the side, facing the first clamping face, of the second clamping arm, and the second clamping arm rotates around the rotating center so that the gasket can abut against or be away from the first clamping face; the gasket is provided with a second clamping face and a second end face away from the rotating center, and the cutter clamps or releases the target through the first clamping face and the second clamping face. The included angle between the second clamping face and the second end face is an obtuse angle, and the end, away from the rotating center, of the gasket inclines in the direction away from the first clamping arm. And / or the included angle between the first clamping face and the first end face is an obtuse angle, and the end, away from the rotating center, of the first clamping arm inclines in the direction away from the gasket. According to the technical scheme, the uniformity of the clamping force when the cutter clamps the target tissue is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a cutter of an ultrasonic scalpel and an ultrasonic scalpel. Background Art

[0002] Ultrasonic cutting hemostat is a common surgical instrument used in surgical operations to cut and coagulate tissues or blood vessels.

[0003] The tool of this ultrasonic scalpel generally includes a chuck, a knife bar and a gasket. The chuck can rotate around its own rotation axis to approach or move away from the knife bar. The gasket is set on the side of the chuck facing the knife bar. When the chuck is close to the knife bar, the tissue is clamped by the gasket and the knife bar. In order to ensure that there is enough clamping force when clamping the tissue to prevent the tissue from falling off, the chuck's stroke does not reach the maximum when the gasket and the knife bar are in contact. When the chuck's stroke reaches the maximum, it will continue to press down the gasket so that the gasket presses the knife bar tightly.

[0004] However, when this type of tool clamps tissue, the clamping force between the front end of the gasket away from the chuck shaft and the tool rod is often larger, and the clamping force between the rear end of the gasket close to the chuck shaft and the tool rod is often smaller, resulting in uneven clamping force between the gasket and the tool rod, affecting the closing effect. Utility Model Content

[0005] The main purpose of the utility model is to provide a cutter of an ultrasonic scalpel, aiming to improve the uniformity of the clamping force when the cutter clamps the target tissue.

[0006] In order to achieve the above-mentioned purpose, the ultrasonic knife tool proposed in the utility model comprises:

[0007] A first clamping arm having a first clamping surface and a first end surface;

[0008] A second clamping arm having a rotation center, the second clamping arm being rotatable relative to the first clamping arm about the rotation center, and a first end surface of the first clamping arm being away from the rotation center; and

[0009] A gasket is provided on a side of the second clamping arm facing the first clamping surface, the second clamping arm rotates around the rotation center to make the gasket abut against or away from the first clamping surface; the gasket faces a second clamping surface of the first clamping surface and a second end surface away from the rotation center, and the tool clamps or releases the target through the first clamping surface and the second clamping surface;

[0010] Wherein, the angle between the second clamping surface and the second end surface is an obtuse angle, and the end of the gasket away from the rotation center is inclined in a direction away from the first clamping arm; and / or, the angle between the first clamping surface and the first end surface is an obtuse angle, and the end of the first clamping arm away from the rotation center is inclined in a direction away from the gasket.

[0011] Optionally, the thickness of the gasket gradually decreases from an end close to the rotation center to an end away from the rotation center; and / or,

[0012] The thickness of the first clamping arm gradually decreases from an end close to the rotation center to an end far away from the rotation center.

[0013] Optionally, an angle between the second clamping surface and the second end surface ranges from 90.5° to 91°.

[0014] Optionally, the gasket comprises:

[0015] a supporting portion, the supporting portion having a first end close to the rotation center and a second end away from the rotation center, an end surface of the second end forming the second end surface; and

[0016] The saw teeth are arranged on a side of the support portion away from the second clamping arm, and a plurality of the saw teeth are arranged along a direction from the first end to the second end, and the plurality of the saw teeth together form the second clamping surface.

[0017] Optionally, along the direction from the first end to the second end, the thickness of the support portion remains unchanged and the heights of the plurality of saw teeth gradually decrease; or,

[0018] Along the direction from the first end to the second end, the heights of the plurality of saw teeth are the same and the thickness of the support portion gradually decreases.

[0019] Optionally, the gasket further includes a mounting structure, wherein the mounting structure is disposed on a side of the support portion away from the saw teeth, and the gasket is detachably connected to the second clamping arm via the mounting structure.

[0020] Optionally, the mounting structure includes a first clamping joint, the second clamping arm is provided with a first clamping groove corresponding to the first clamping joint, the first clamping joint is inserted into the first clamping groove to connect the gasket and the second clamping arm; and / or,

[0021] The mounting structure is provided with a second clamping groove, the second clamping arm is provided with a second clamping joint corresponding to the second clamping groove, and the second clamping joint is inserted into the second clamping groove to connect the gasket and the second clamping arm.

[0022] Optionally, an angle between the first clamping surface and the first end surface ranges from 90.5° to 91°.

[0023] Optionally, the tool further comprises:

[0024] an outer tube, the first clamping arm being disposed on the outer tube, the second clamping arm being rotatably connected to the outer tube and forming the rotation center; and

[0025] The inner tube is slidably arranged on the outer tube, and the second clamping arm is connected to the inner tube. The second clamping arm is driven to rotate around the rotation center by the linear motion of the inner tube.

[0026] The utility model also provides an ultrasonic scalpel, comprising the above-mentioned ultrasonic scalpel tool.

[0027] The ultrasonic scalpel in a technical solution of an embodiment of the utility model includes a first clamping arm, a second clamping arm and a gasket, the first clamping arm has a first clamping surface and a first end surface, the second clamping arm has a rotation center, and can rotate relative to the first clamping arm around its own rotation center, and the gasket is arranged on the side of the second clamping arm facing the first clamping surface, and through the rotation of the second clamping arm, the gasket is abutted against the first clamping surface to clamp the target, or the gasket is moved away from the first clamping surface to release the target. The first end surface of the first clamping arm is the end surface away from the rotation center, the gasket has a second clamping surface and a second end surface, and the second end surface is the end surface of the gasket away from the rotation center. When the gasket and the first clamping surface clamp the target tissue, the first clamping surface and the second clamping surface are located on both sides of the target tissue. The angle between the second clamping surface and the second end surface is set to an obtuse angle, and the end of the gasket away from the rotation center is inclined in the direction away from the first clamping arm, so that the gasket is inclined with a trend of high in the front and low in the back. When the gasket approaches the first clamping arm, the inclined second clamping surface plays a compensating role, so that the end of the gasket away from the rotation center and the end of the gasket close to the rotation center are both abutted against the first clamping arm at the same time, and after the gasket abuts against the first clamping arm, the deformation of the end of the gasket away from the rotation center and the deformation of the end of the gasket close to the rotation center are close, so that the clamping force between the end of the gasket away from the rotation center and the first clamping arm and the clamping force between the end of the gasket close to the rotation center and the first clamping arm are close, thereby improving the uniformity of the clamping force of the tool when clamping the target tissue, thereby improving the coagulation effect on the target tissue, and also making the force on the gasket more uniform, thereby extending the service life of the gasket. Similarly, the angle between the first clamping surface and the first end surface can be set to be an obtuse angle, and the end of the first clamping arm away from the rotation center can be inclined in the direction away from the gasket, so that the first clamping arm is inclined with a trend of being lower at the front and higher at the back. When the gasket approaches the first clamping arm, the inclined second clamping surface plays a compensating role, so that the clamping force between the end of the gasket away from the rotation center and the first clamping arm and the clamping force between the end of the gasket close to the rotation center and the first clamping arm are close, thereby improving the uniformity of the clamping force of the tool when clamping the target tissue, thereby improving the coagulation effect on the target tissue, and making the force on the gasket more uniform, thereby extending the service life of the gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1It is a structural schematic diagram of the gasket of the ultrasonic knife of the utility model;

[0030] Figure 2 This is a schematic structural diagram of an embodiment of the ultrasonic scalpel of the utility model;

[0031] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0032] Figure 4 It is a partial structural schematic diagram of an embodiment of the ultrasonic scalpel of the utility model.

[0033] Description of Figure Numbers:

[0034] Label name Label name 10 Knives 100 First clamping arm 101 First end face 102 First clamping surface 200 Second clamping arm 201 Rotation Center 210 First card slot 300 Gasket 301 Second end face 310 Support 320 Sawtooth 321 Second clamping surface 330 First card connector 400 External pipe 500 Inner tube 20 Driving handle

[0035] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral 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 the present invention can be understood according to specific circumstances.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0040] The utility model provides a cutter of an ultrasonic knife.

[0041] Reference Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of the gasket of the ultrasonic knife of the utility model. Figure 2 This is a schematic diagram of the structure of an embodiment of the ultrasonic knife of the utility model. Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0042] In the embodiment of the utility model, the cutter 10 of the ultrasonic knife includes:

[0043] The first clamping arm 100 is provided with a first clamping surface 102 and a first end surface 101;

[0044] The second clamping arm 200 has a rotation center 201, and the second clamping arm 200 can rotate relative to the first clamping arm 100 around the rotation center, and the first end surface 101 of the first clamping arm 200 is away from the rotation center; and

[0045] The gasket 300 is arranged on the side of the second clamping arm 200 facing the first clamping surface 102. The second clamping arm 200 rotates around the rotation center 201 to make the gasket 300 abut against or away from the first clamping surface 102. The gasket 300 is provided with a second clamping surface 321 facing the first clamping surface and a second end surface 301 away from the rotation center. The tool 10 clamps or releases the target through the first clamping surface 102 and the second clamping surface 321.

[0046] The included angle between the second clamping surface 321 and the second end surface 301 is an obtuse angle ( Figure 1The axis of the second clamping surface and the extended line of the axis of the second end face are at an acute angle), and the end of the gasket 300 away from the rotation center 201 is inclined in a direction away from the first clamping arm 100; and / or, the angle between the first clamping surface 102 and the first end face 101 is an obtuse angle, and the end of the first clamping arm 100 away from the rotation center 201 is inclined in a direction away from the gasket 300.

[0047] The cutter 10 of the ultrasonic scalpel in a technical solution of an embodiment of the utility model includes a first clamping arm 100, a second clamping arm 200 and a gasket 300. The first clamping arm 100 has a first clamping surface 102 and a first end surface 101. The second clamping arm 200 has a rotation center and can rotate relative to the first clamping arm around its own rotation center 201. The gasket 300 is arranged on the side of the second clamping arm 200 facing the first clamping surface 102. Through the rotation of the second clamping arm 200, the gasket 300 is abutted against the first clamping surface 102 to clamp the target, or the gasket 300 is moved away from the first clamping surface 102 to release the target. The first end face 101 of the first clamping arm 100 is the end face away from the rotation center 201, and the gasket 300 has a second clamping face 321 and a second end face 301. The second end face 301 is the end face of the gasket 300 away from the rotation center 201. When the gasket 300 and the first clamping face 102 clamp the target tissue, the first clamping face 102 and the second clamping face 321 are located on both sides of the target tissue. The included angle between the second clamping surface 321 and the second end surface 301 is set to an obtuse angle, and the end of the gasket 300 away from the rotation center 201 is inclined in the direction away from the first clamping arm 100, so that the gasket 300 is inclined with a tendency of being high at the front and low at the back. When the gasket 300 approaches the first clamping arm 100, the inclined second clamping surface 321 plays a compensating role, so that the end of the gasket 300 away from the rotation center 201 and the end of the gasket 300 close to the rotation center 201 are both in contact with the first clamping arm 100 at the same time, and after the gasket 300 abuts against the first clamping arm 100, The deformation amount of the end of the gasket 300 away from the rotation center 201 is close to the deformation amount of the end of the gasket 300 close to the rotation center 201, so that the clamping force between the end of the gasket 300 away from the rotation center 201 and the first clamping arm 100 and the clamping force between the end of the gasket 300 close to the rotation center 201 and the first clamping arm 100 are close, thereby improving the uniformity of the clamping force of the tool 10 when clamping the target tissue, thereby improving the coagulation effect on the target tissue, making the force on the gasket 300 more uniform, and extending the service life of the gasket 300. Similarly, the angle between the first clamping surface 102 and the first end surface 101 can also be set to be an obtuse angle, and the end of the first clamping arm 100 away from the rotation center 201 can be inclined in the direction away from the gasket 300, so that the first clamping arm 100 is inclined with a trend of being lower at the front and higher at the back. When the gasket 300 approaches the first clamping arm 100, the inclined second clamping surface 321 plays a compensating role, so that the clamping force between the end of the gasket 300 away from the rotation center 201 and the first clamping arm 100 and the clamping force between the end of the gasket 300 close to the rotation center 201 and the first clamping arm 100 are close, thereby improving the uniformity of the clamping force of the tool 10 when clamping the target tissue, thereby improving the coagulation effect on the target tissue, and also making the force on the gasket 300 more uniform, thereby extending the service life of the gasket 300.

[0048] Optionally, the thickness of the gasket 300 decreases from one end close to the rotation center 201 to one end far from the rotation center 201; and / or,

[0049] The thickness of the first clamping arm 100 decreases from an end close to the rotation center 201 to an end far away from the rotation center 201 .

[0050] Reference Figure 1 In this embodiment, the thickness of the gasket 300 decreases from the end close to the rotation center 201 to the end away from the rotation center 201. The thickness change of the gasket 300 makes the end of the gasket 300 away from the rotation center 201 tilt in the direction away from the first clamping arm 100. The structure is simple, easy to implement, and simple to manufacture.

[0051] In this embodiment, the thickness of the first clamping arm 100 decreases from the end close to the rotation center 201 to the end away from the rotation center 201. The thickness change of the first clamping arm 100 causes the end of the first clamping arm 100 away from the rotation center 201 to be inclined in a direction away from the gasket 300. The structure is simple, easy to implement, and simple to manufacture.

[0052] Optionally, the included angle between the second clamping surface 321 and the second end surface 301 is in the range of 90.5° to 91°.

[0053] Reference Figure 1 In this embodiment, when the angle between the second clamping surface 321 and the second end surface 301 is too large, the second clamping surface 321 cannot play a compensating role, and the clamping force between the end of the gasket 300 away from the rotation center 201 and the first clamping arm 100 is still relatively large; when the angle between the second clamping surface 321 and the second end surface 301 is too small, the second clamping surface 321 will be too inclined, and the clamping force between the end of the gasket 300 away from the rotation center 201 and the first clamping arm 100 will be too small, resulting in the target tissue not being clamped tightly, and the problem of the target tissue falling off easily occurs. Specifically in this embodiment, the angle between the first clamping surface 102 and the first end surface 101 ranges from 90.5° to 91°, which can not only improve the uniformity of the clamping force between the gasket 300 and the first clamping arm 100, but also ensure that the gasket 300 and the first clamping arm 100 clamp the target tissue tightly.

[0054] Optionally, the gasket 300 comprises:

[0055] A support portion 310, the support portion 310 having a first end close to the rotation center 201 and a second end away from the rotation center 201, an end surface of the second end forming a second end surface; and

[0056] The saw teeth 320 are disposed on a side of the support portion 310 away from the second clamping arm 200 . A plurality of saw teeth 320 are disposed along a direction from the first end to the second end. The plurality of saw teeth 320 together form a second clamping surface 321 .

[0057] Reference Figure 1 In this embodiment, the gasket 300 includes a supporting portion 310 and a serration 320. The serration 320 is arranged on the side of the supporting portion 310 away from the second clamping arm 200 and is provided with a plurality of serrations 320 to form a second clamping surface 321. The target tissue is clamped by the plurality of serrations 320 and the first clamping arm 100, so that the gasket 300 and the first clamping arm 100 clamp the target tissue more tightly, thereby reducing the possibility of the target tissue falling off and improving the coagulation effect.

[0058] Optionally, along the direction from the first end to the second end, the thickness of the support portion 310 remains unchanged and the heights of the plurality of saw teeth 320 decrease; or,

[0059] Along the direction from the first end to the second end, the heights of the plurality of saw teeth 320 are the same and the thickness of the support portion 310 decreases.

[0060] In this embodiment, by keeping the thickness of the support portion 310 unchanged but changing the height of the serrations 320, the thickness of the gasket 300 decreases from the end close to the rotation center 201 to the end far from the rotation center 201, thereby ensuring the strength of the gasket 300 itself and reducing the possibility of damage to the gasket 300 during disassembly and assembly.

[0061] In this embodiment, by keeping the height of the saw teeth 320 unchanged but changing the thickness of the support portion 310, the thickness of the gasket 300 decreases from the end close to the rotation center 201 to the end far from the rotation center 201, making it easier to ensure the manufacturing accuracy of the inclination angle of the second clamping surface 321 and reduce the processing difficulty of the gasket 300.

[0062] Optionally, the gasket 300 further includes a mounting structure, which is disposed on a side of the support portion 310 away from the saw teeth 320 , and the gasket 300 is detachably connected to the second clamping arm 200 via the mounting structure.

[0063] In this embodiment, the gasket 300 also includes a mounting structure, and the gasket 300 is detachably connected to the second clamping arm 200 through the mounting structure, which can be achieved by snap-on or screw-on methods, so as to facilitate the replacement of the gasket 300 and improve the assembly efficiency of the tool 10.

[0064] Optionally, the mounting structure includes a first clamping joint 330, the second clamping arm 200 is provided with a first clamping groove 210 corresponding to the first clamping joint 330, and the first clamping joint 330 is inserted into the first clamping groove 210 to connect the gasket 300 and the second clamping arm 200; and / or,

[0065] The mounting structure is provided with a second clamping groove, and the second clamping arm 200 is provided with a second clamping joint corresponding to the second clamping groove, and the second clamping joint is inserted into the second clamping groove to connect the gasket 300 and the second clamping arm 200 .

[0066] Combination Figure 3 to Figure 4 In this embodiment, the mounting structure includes a first clamping joint 330, and a first clamping groove 210 is set on the second clamping arm 200 corresponding to the first clamping joint 330. The gasket 300 is installed on the second clamping arm 200 by inserting the first clamping joint 330 into the first clamping groove 210, which is easy to assemble and improves the production efficiency of the tool 10.

[0067] In this embodiment, a second clamping groove is provided on the mounting structure, and a second clamping joint is provided on the second clamping arm 200 corresponding to the second clamping groove. The gasket 300 is installed on the second clamping arm 200 by inserting the second clamping joint into the second clamping groove, which facilitates assembly and improves the production efficiency of the tool 10.

[0068] Optionally, the angle between the first clamping surface 102 and the first end surface 101 ranges from 90.5° to 91°.

[0069] In this embodiment, when the angle between the first clamping surface 102 and the first end surface 101 is too large, the first clamping surface 102 cannot play a compensating role, and the clamping force between the end of the gasket 300 away from the rotation center 201 and the first clamping arm 100 is still relatively large; when the angle between the first clamping surface 102 and the first end surface 101 is too small, the first clamping surface 102 will be too inclined, and the clamping force between the end of the gasket 300 away from the rotation center 201 and the first clamping arm 100 will be too small, resulting in the target tissue not being clamped tightly, and the problem of the target tissue falling off easily occurs. Specifically in this embodiment, the angle between the first clamping surface 102 and the first end surface 101 ranges from 90.5° to 91°, which can not only improve the uniformity of the clamping force between the gasket 300 and the first clamping arm 100, but also ensure that the gasket 300 and the first clamping arm 100 clamp the target tissue tightly.

[0070] Optionally, the tool 10 further comprises:

[0071] The outer tube 400, the first clamping arm 100 is disposed on the outer tube 400, and the second clamping arm 200 is rotatably connected to the outer tube 400 and forms a rotation center 201; and

[0072] The inner tube 500 is slidably disposed in the outer tube 400 . The second clamping arm 200 is connected to the inner tube 500 . The linear motion of the inner tube 500 drives the second clamping arm 200 to rotate around the rotation center 201 .

[0073] Reference Figure 1In this embodiment, the tool 10 also includes an outer tube 400 and an inner tube 500, the first clamping arm 100 is fixed on the outer tube 400, the second clamping arm 200 and the outer tube 400 are rotatably connected to form a rotation center 201, and the second clamping arm 200 and the inner tube 500 are also rotatably connected. When the inner tube 500 slides inside the outer tube 400, the inner tube 500 drives the second clamping arm 200 to move, so that the second clamping arm 200 rotates around the rotation center 201, thereby making the gasket 300 abut against or separate from the first clamping arm 100. The structure is simple and the manufacturing process is mature.

[0074] The present invention also proposes an ultrasonic scalpel, which includes the above-mentioned ultrasonic scalpel cutter 10. The specific structure of the ultrasonic scalpel cutter 10 refers to the above-mentioned embodiment. Since the ultrasonic scalpel adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Figure 1 The ultrasonic knife includes a driving handle 20, which includes a handle body, an ultrasonic transducer and a trigger. The trigger is movably arranged on the handle body and drives the inner tube 500. The user drives the inner tube 500 to move by operating the trigger. The outer tube 400 is connected to the ultrasonic transducer of the driving handle 20. The ultrasonic transducer transmits ultrasonic waves through the outer tube 400 to the first clamping arm 100 and the second clamping arm 200, thereby improving the cutting and coagulation effects of the knife 10.

[0075] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An ultrasonic scalpel tool, characterized in that: The tool comprises: A first clamping arm having a first clamping surface and a first end surface; A second clamping arm having a rotation center, the second clamping arm being rotatable relative to the first clamping arm about the rotation center, and a first end surface of the first clamping arm being away from the rotation center; and A gasket is provided on a side of the second clamping arm facing the first clamping surface, and the second clamping arm rotates around the rotation center to make the gasket abut against or away from the first clamping surface; the gasket is provided with a second clamping surface facing the first clamping surface and a second end surface away from the rotation center, and the tool clamps or releases the target through the first clamping surface and the second clamping surface; Wherein, the angle between the second clamping surface and the second end surface is an obtuse angle, and the end of the gasket away from the rotation center is inclined in a direction away from the first clamping arm; and / or, the angle between the first clamping surface and the first end surface is an obtuse angle, and the end of the first clamping arm away from the rotation center is inclined in a direction away from the gasket.

2. The ultrasonic scalpel tool according to claim 1, characterized in that: The thickness of the gasket gradually decreases from an end close to the rotation center to an end far away from the rotation center; and / or, The thickness of the first clamping arm gradually decreases from an end close to the rotation center to an end far away from the rotation center.

3. The ultrasonic scalpel tool according to claim 1, characterized in that: The included angle between the second clamping surface and the second end surface ranges from 90.5° to 91°.

4. The ultrasonic scalpel tool according to claim 1, characterized in that: The gasket comprises: a supporting portion, the supporting portion having a first end close to the rotation center and a second end away from the rotation center, an end surface of the second end forming the second end surface; and The saw teeth are arranged on a side of the support portion away from the second clamping arm, and a plurality of the saw teeth are arranged along a direction from the first end to the second end, and the plurality of the saw teeth together form the second clamping surface.

5. The ultrasonic scalpel tool according to claim 4, characterized in that: Along the direction from the first end to the second end, the thickness of the support portion remains constant and the heights of the plurality of saw teeth gradually decrease; or, Along the direction from the first end to the second end, the heights of the plurality of saw teeth are the same and the thickness of the support portion gradually decreases.

6. The ultrasonic scalpel tool according to claim 4, characterized in that: The gasket further comprises a mounting structure, wherein the mounting structure is arranged on a side of the support portion away from the saw teeth, and the gasket is detachably connected to the second clamping arm via the mounting structure.

7. The ultrasonic scalpel tool according to claim 6, characterized in that: The mounting structure includes a first clamping joint, the second clamping arm is provided with a first clamping groove corresponding to the first clamping joint, the first clamping joint is inserted into the first clamping groove to connect the gasket and the second clamping arm; and / or, The mounting structure is provided with a second clamping groove, the second clamping arm is provided with a second clamping joint corresponding to the second clamping groove, and the second clamping joint is inserted into the second clamping groove to connect the gasket and the second clamping arm.

8. The ultrasonic scalpel tool according to claim 1, characterized in that: The included angle between the first clamping surface and the first end surface ranges from 90.5° to 91°.

9. The ultrasonic scalpel tool according to claim 1, characterized in that: The tool also includes: an outer tube, the first clamping arm being disposed on the outer tube, the second clamping arm being rotatably connected to the outer tube and forming the rotation center; and The inner tube is slidably arranged on the outer tube, and the second clamping arm is connected to the inner tube. The second clamping arm is driven to rotate around the rotation center by the linear motion of the inner tube.

10. An ultrasonic scalpel, characterized in that: A cutting tool comprising the ultrasonic cutting tool as described in any one of claims 1 to 9.

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