Ultrasonic shears, methods of use, jaw opening and jaw pressure detection methods

Abstract

The application belongs to the technical field of ultrasonic knives, and particularly relates to an ultrasonic knife, a use method, a jaw opening degree and a jaw pressure detection method. The device comprises a sliding block, a knife rod assembly, a trigger sleeve and a mounting sleeve. The front end of the mounting sleeve is hingedly connected with a jaw, the driving arm of the jaw is connected with the trigger sleeve, the trigger sleeve is connected with the sliding block, so that the trigger sleeve slides under the driving of the sliding block, the jaw is driven to be attached to the knife body to complete the closure of the jaw, the side wall of the mounting sleeve is provided with a displacement sensor, the side wall of the trigger sleeve is provided with a detection ring, the detection ring is suitable for being detected by the displacement sensor, the displacement distance of the trigger sleeve is detected and transmitted to a controller, the closure state of the jaw is judged by the controller, the displacement distance of the trigger sleeve is detected by the displacement sensor, the rotation amount of the jaw is judged by the controller, and the closure state of the jaw is judged.

Description

Technical Field

[0001] This invention belongs to the field of ultrasonic scalpel technology, and particularly relates to an ultrasonic scalpel, its usage method, and a method for detecting jaw opening and jaw pressure. Background Technology

[0002] An ultrasonic scalpel is a modern surgical tool whose core function is to convert electrical energy into mechanical energy through a transducer. Specifically, when an ultrasonic generator produces an excitation current at an ultrasonic frequency, it is transmitted to the transducer. Under the action of the excitation current, the transducer generates mechanical vibration. The vibration is transmitted and amplified through a waveguide rod to the tip of the waveguide rod. When the high-speed vibrating tip of the waveguide rod comes into contact with tissue or organ, it generates frictional heat, which denatures the proteins in the tissue or organ, thereby achieving the effects of cutting and coagulation.

[0003] A typical ultrasonic scalpel usually consists of a trigger assembly and a blade assembly. The trigger assembly is connected to the trigger sleeve in the blade assembly via a slider. Pressing the trigger assembly to the bottom causes the jaws in the blade assembly to close completely, completing the cut. However, in use, when the trigger assembly is pressed to the end point, the jaws may clamp onto foreign objects and fail to close completely. It is necessary to detect the closure status of the jaws. Due to the high-frequency vibration at the jaws, using conventional sensors can easily cause deviations in the detection results or even damage the sensors.

[0004] Therefore, how to avoid the sensor installed at the jaws from having deviations in the detection results or even damage to the sensor due to high-frequency vibration at the jaws is a technical problem that urgently needs to be solved in this field.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0006] This disclosure provides at least one ultrasonic scalpel, a method of using it, and a method for detecting jaw opening and jaw pressure.

[0007] In a first aspect, embodiments of this disclosure provide an ultrasonic scalpel, a method of use, and a method for detecting jaw opening and jaw pressure, comprising: a slider; a scalpel assembly including a scalpel body and a trigger sleeve and an installation sleeve sequentially sleeved thereon; wherein, the front end of the installation sleeve is hinged to a jaw, the active arm of the jaw is connected to the trigger sleeve, and the trigger sleeve is connected to the slider, so that the trigger sleeve slides under the action of the slider, driving the jaw to conform to the scalpel body to complete the jaw closure; and a displacement sensor is provided on the side wall of the installation sleeve, and a detection ring is provided on the side wall of the trigger sleeve, the detection ring being adapted to be detected by the displacement sensor to detect the displacement distance of the trigger sleeve and transmit it to a controller, which determines the closure state of the jaw.

[0008] In one optional implementation, the closed state includes: jaw opening degree; the controller is configured to receive the displacement distance of the trigger sleeve to obtain the angle C after the jaws are closed, wherein; where the initial angle of the jaws is A, the length of the active arm of the jaws is L1, and the displacement distance of the trigger sleeve is D; the angle C after the jaws are closed is C = arcsin(sinA-D / L1).

[0009] In one optional embodiment, the closed state includes: jaw pressure; the controller is configured to receive detection data from the displacement sensor to obtain the pressure F3 after the jaws are closed, wherein: the length of the active arm of the jaw is L1, the length of the passive arm of the jaw is L2, the angle after the jaws are closed is C, the maximum displacement distance of the slider is L3, the preload of the spring body is F1, the stiffness coefficient of the spring body is K, and the displacement distance of the trigger sleeve is D; the pressure F3 at the jaw closure is 2*L1*cosC*(F1+K(L3-D)) / L2.

[0010] In one optional embodiment, a wave spring assembly is provided at the tail end of the trigger sleeve. The wave spring assembly includes a mounting ring, which is sleeved on the side wall of the trigger sleeve and fastened to the trigger sleeve. A detection ring is disposed on the end face of the mounting ring, and the mounting ring is connected to the slider.

[0011] In one optional embodiment, the mounting ring has a placement ring groove on its side wall, a sliding ring is slidably disposed in the placement ring groove, the sliding ring has a locking groove on its side wall, the slider is inserted into the locking groove to drive the sliding ring, and the end face of the sliding ring is connected to the end face of the placement ring groove through a wave spring body, and the wave spring body is always in a compressed state.

[0012] In one alternative embodiment, the mounting ring includes a pair of collars, each collar having a protruding ring at both ends to form a placement groove, and the sidewalls of the collars being threaded to adjust the initial compression of the wave spring body.

[0013] In one optional embodiment, the side wall of the mounting sleeve is provided with a locking ring, and the displacement sensor is disposed on the end face of the locking ring.

[0014] Secondly, this disclosure provides a method for detecting the opening degree of jaws, comprising: a displacement sensor for detecting the displacement distance of a trigger sleeve; and a controller configured to receive the displacement distance of the trigger sleeve to obtain the angle C after the jaws are closed, wherein the angle C after the jaws are closed is arcsin(sinA-D / L1); where the initial angle of the jaws is A, the length of the active arm of the jaws is L1, and the displacement distance of the trigger sleeve is D.

[0015] Thirdly, this disclosure provides a jaw pressure detection method, comprising: a displacement sensor for detecting the displacement distance of a trigger sleeve; and a controller configured to receive the detection data from the displacement sensor to obtain the pressure F3 after the jaws are closed, wherein: the length of the active arm of the jaws is L1, the length of the passive arm of the jaws is L2, the angle after the jaws are closed is C, the maximum displacement distance of the slider is L3, the preload of the spring body is F1, the stiffness coefficient of the spring body is K, and the displacement distance of the trigger sleeve is D; the jaw closure pressure F3 = 2*L1*cosC*(F1+K(L3-D)) / L2.

[0016] Fourthly, embodiments of this disclosure provide a method for using an ultrasonic scalpel, including:

[0017] Step S1: Press the trigger assembly to drive the trigger sleeve to slide, thereby causing the jaws to close;

[0018] Step S2: The displacement sensor detects the displacement distance of the trigger sleeve and transmits it to the controller;

[0019] In step S3, the controller detects the opening degree and pressure of the jaws.

[0020] The beneficial effects of this invention are that the ultrasonic scalpel, jaw opening detection method, jaw pressure detection method, and usage method detect the displacement distance of the trigger sleeve through a displacement sensor and determine the amount of jaw rotation through a controller, thereby determining the jaw closure state. This avoids installing sensors at the jaws, which could cause deviations in the detection results, and also improves the service life of the sensors.

[0021] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A perspective view of an ultrasonic scalpel provided in an embodiment of this disclosure;

[0025] Figure 2 A cross-sectional view of an ultrasonic scalpel provided in an embodiment of this disclosure;

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 A schematic diagram of a jaw opening detection method provided in an embodiment of this disclosure;

[0028] Figure 5 This is a schematic diagram of a jaw pressure detection method provided in an embodiment of the present disclosure.

[0029] In the picture:

[0030] 1. Slider;

[0031] 2. Tool holder assembly; 21. Tool body; 22. Trigger sleeve; 23. Mounting sleeve; 24. Jaws; 25. Displacement sensor; 26. Detection ring; 27. Locking ring;

[0032] 3. Spring assembly; 31. Mounting ring; 31a. Placement ring groove; 31b. Collar ring; 32. Sliding ring; 32a. Locking groove; 33. Spring body. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0035] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0036] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0037] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0038] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0039] Research has revealed that in existing technologies, the jaws cannot accurately determine when they grip a foreign object, which is the problem and objective of this invention.

[0040] Based on the above research, this disclosure provides an ultrasonic scalpel, a method of use, and a method for detecting jaw opening and jaw pressure. By detecting the displacement distance of the trigger sleeve and cooperating with a controller, the closed state of the jaws can be determined.

[0041] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0044] See Figures 1 to 5 This invention illustrates an ultrasonic scalpel, its usage method, and a method for detecting the opening degree and pressure of the jaws 24. The scalpel includes: a slider 1; a scalpel assembly 2, comprising a scalpel body 21 and a trigger sleeve 22 and a mounting sleeve 23 sequentially sleeved thereon; wherein the front end of the mounting sleeve 23 is hinged to the jaws 24, the active arm of the jaws 24 is connected to the trigger sleeve 22, and the trigger sleeve 22 is connected to the slider 1, so that the trigger sleeve 22 slides under the action of the slider 1, driving the jaws 24 to conform to the scalpel body 21 and complete the closing of the jaws 24; and the sidewall of the mounting sleeve 23. A displacement sensor 25 is provided, and a detection ring 26 is provided on the side wall of the trigger sleeve 22. The detection ring 26 is adapted to be detected by the displacement sensor 25 to detect the displacement distance of the trigger sleeve 22 and transmit it to the controller. The controller determines the closing state of the jaws 24. In short, the displacement distance of the trigger sleeve 22 is detected by the displacement sensor 25, and the amount of rotation of the jaws 24 is determined by the controller, thereby determining the closing state of the jaws 24. This avoids the need to install a sensor at the jaws 24, which would cause deviation in the detection results, and also improves the service life of the sensor.

[0045] In some embodiments, Figure 4The closed state is shown to include: the opening degree of the jaws 24; the controller is configured to receive the displacement distance of the trigger sleeve 22 to obtain the angle C after the jaws 24 are closed, where; in the formula, the initial angle of the jaws 24 is A, the length of the active arm of the jaws 24 is L1, and the displacement distance of the trigger sleeve 22 is D; the angle C after the jaws 24 are closed is C = arcsin(sinA-D / L1); in short, only the displacement distance D of the trigger sleeve 22 is a variable among all parameters, and by receiving the displacement distance D of the trigger sleeve 22, in Figure 4 In the shaded triangle, establish trigonometric functions: (L1*sinA-(D+L1*(cosC-cosA)*tanC)) / (L1*cosA)=tanC. Then, we can find that the angle C after the jaws 24 are closed is C=arcsin(sinA-D / L1).

[0046] In some embodiments, Figure 5 The closed state is shown to include: jaw 24 pressure; the controller is configured to receive detection data from the displacement sensor 25 to obtain the pressure F3 after the jaw 24 is closed, wherein: the length of the active arm of the jaw 24 is L1, the length of the passive arm of the jaw 24 is L2, the angle after the jaw 24 is closed is C, the maximum displacement distance of the slider 1 is L3, the preload of the spring body 33 is F1, the stiffness coefficient of the spring body 33 is K, and the displacement distance of the trigger sleeve 22 is D; the pressure F3 of the closed jaw 24 is 2*L1*cosC*(F1+K(L3-D)) / L2; in short, when the trigger assembly is pressed to the end point, the slider 1 slides to its maximum extent, and through the spring body 33, it drives the trigger sleeve 22 to slide, wherein the spring body 33 absorbs a part of the pressure and compresses, the compression distance is (L3-D), and the pressure absorbed is K(L3-D), see Figure 5 When slider 1 drives the wave spring body 33 backward, it needs to overcome the preload force F1 of the wave spring body 33 first, and obtain the resultant force F2 at the end of the active arm of jaw 24 as F1+K(L3-D). F3 is the pressure uniformly applied by the passive arm of jaw 24, so F2*L1=(F3*L2) / 2 can be obtained.

[0047] In some embodiments, Figures 2-3 The diagram shows that a spring assembly 3 is provided at the tail end of the trigger sleeve 22. The spring assembly 3 includes a mounting ring 31, which is sleeved on the side wall of the trigger sleeve 22 and fastened to the trigger sleeve 22. A detection ring 26 is provided on the end face of the mounting ring 31, and the mounting ring 31 is connected to the slider 1. In short, the mounting ring 31 is sleeved on the side wall of the trigger sleeve 22 and fastened to the trigger sleeve 22 to complete the driving of the trigger sleeve 22.

[0048] In some embodiments, Figures 2-3 The mounting ring 31 has a placement groove 31a on its side wall. A sliding ring 32 is slidably disposed in the placement groove 31a. The side wall of the sliding ring 32 has a locking groove 32a. The slider 1 is inserted into the locking groove 32a to drive the sliding ring 32. The end face of the sliding ring 32 is connected to the end face of the placement groove 31a through a spring body 33, and the spring body 33 is always in a compressed state. In short, the sliding ring 32 is slidably disposed in the placement groove 31a and connected to the end face of the placement groove 31a through the spring body 33, so that the sliding ring 32 needs to overcome the preload of the spring body 33 before it can drive the mounting ring 31. Furthermore, the sliding ring 32 has a locking groove 32a on its side wall to lock the slider 1.

[0049] In some embodiments, Figures 2-3 The mounting ring 31 is shown to include a pair of collars 31b, each collar 31b having a protruding ring at both ends to form a placement groove 31a. The sidewalls of the collars 31b are threaded to adjust the initial compression of the spring body 33. In short, the mounting ring 31 is detachably connected and can be rotated to adjust the length of the placement groove 31a, thereby adjusting the preload of the spring body 33.

[0050] In some embodiments, Figures 2-3 The mounting sleeve 23 is shown to have a retaining ring 27 on its side wall, and the displacement sensor 25 is disposed on the end face of the retaining ring 27. In short, the mounting sleeve 23 is connected to the housing of the ultrasonic scalpel through the retaining ring 27, and one end of the retaining ring 27 extends into the housing of the ultrasonic scalpel. The retaining ring 27 has an annular groove for mounting the displacement sensor 25.

[0051] See Figure 4 This embodiment also provides a method for detecting the opening degree of the jaws 24, including: a displacement sensor 25, which is used to detect the displacement distance of the trigger sleeve 22; and a controller configured to receive the displacement distance of the trigger sleeve 22 to obtain the angle C of the jaws 24 after closing, wherein the angle C of the jaws 24 after closing is arcsin(sinA-D / L1); where the initial angle of the jaws 24 is A, the length of the active arm of the jaws 24 is L1, and the displacement distance of the trigger sleeve 22 is D.

[0052] See Figure 5This embodiment also provides a method for detecting the pressure of the jaws 24, including: a displacement sensor 25, which is used to detect the displacement distance of the trigger sleeve 22; a controller, configured to receive the detection data of the displacement sensor 25 to obtain the pressure F3 after the jaws 24 are closed, wherein: the length of the active arm of the jaws 24 is L1, the length of the passive arm of the jaws 24 is L2, the angle after the jaws 24 are closed is C, the maximum displacement distance of the slider 1 is L3, the preload of the spring body 33 is F1, the stiffness coefficient of the spring body 33 is K, and the displacement distance of the trigger sleeve 22 is D; the pressure F3 of the closed jaws 24 is 2*L1*cosC*(F1+K(L3-D)) / L2.

[0053] This embodiment also provides a method for using an ultrasonic scalpel, including:

[0054] Step S1: Press the trigger assembly to drive the trigger sleeve 22 to slide, thereby causing the jaws 24 to close;

[0055] In step S2, the displacement sensor 25 detects the displacement distance of the trigger sleeve 22 and transmits it to the controller; the displacement sensor 25 transmits the displacement distance of the trigger sleeve 22 to the controller in real time.

[0056] In step S3, the controller detects the opening degree and pressure of the jaws 24; the controller calculates the opening degree and pressure of the jaws 24 in real time.

[0057] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0058] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0059] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0060] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0061] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An ultrasonic scalpel, characterized in that, include: Slider (1); The tool holder assembly (2) includes a tool body (21) and a trigger sleeve (22) and a mounting sleeve (23) sequentially fitted together. The mounting sleeve (23) has a jaw (24) hinged to its front end. The active arm of the jaw (24) is connected to the trigger sleeve (22), and the trigger sleeve (22) is connected to the slider (1), so that the trigger sleeve (22) slides under the action of the slider (1), driving the jaw (24) to conform to the tool body (21) and complete the closing of the jaw (24). The side wall of the mounting sleeve (23) is provided with a displacement sensor (25), and the side wall of the trigger sleeve (22) is provided with a detection ring (26). The detection ring (26) is adapted to be detected by the displacement sensor (25) to detect the displacement distance of the trigger sleeve (22) and transmit it to the controller, and the controller determines the closing state of the jaws (24). The closed state includes: jaw (24) opening degree; The controller is configured to receive the displacement distance of the trigger sleeve (22) to obtain the angle C after the jaws (24) are closed, wherein; In the formula, the initial angle of the jaws (24) is A, the length of the active arm of the jaws (24) is L1, and the displacement distance of the trigger sleeve (22) is D; The angle C after the jaws (24) are closed is C = arcsin(sinA-D / L1). The closed state includes: jaw (24) pressure; The controller is configured to receive detection data from the displacement sensor (25) to obtain the pressure F3 after the jaws (24) close, wherein; The length of the active arm of the jaw (24) is L1, the length of the passive arm of the jaw (24) is L2, the angle of the jaw (24) after closing is C, the maximum displacement distance of the slider (1) is L3, the preload of the wave spring body (33) is F1, the stiffness coefficient of the wave spring body (33) is K, and the displacement distance of the trigger sleeve (22) is D. The pressure of the jaws (24) closing is F3 = 2 * L1 * cosC * (F1 + K (L3 - D)) / L2.

2. The ultrasonic scalpel as described in claim 1, characterized in that, The trigger sleeve (22) has a spring assembly (3) at its tail end. The spring assembly (3) includes a mounting ring (31), which is sleeved on the side wall of the trigger sleeve (22) and fastened to it. The detection ring (26) is disposed on the end face of the mounting ring (31). The mounting ring (31) is connected to the slider (1).

3. The ultrasonic scalpel as described in claim 2, characterized in that, The mounting ring (31) has a ring placement groove (31a) on its side wall. A sliding ring (32) is slidably disposed in the ring placement groove (31a). The sliding ring (32) has a locking groove (32a) on its side wall. The slider (1) is inserted into the locking groove (32a) to drive the sliding ring (32). The end face of the sliding ring (32) is connected to the end face of the placement ring groove (31a) through the spring body (33), and the spring body (33) is always in a compressed state.

4. The ultrasonic scalpel as described in claim 3, characterized in that, The mounting ring (31) includes a pair of collars (31b), with protruding rings at both ends of the collars (31b) to form a placement groove (31a). The sidewalls of the collars (31b) are threaded to adjust the initial compression of the wave spring body (33).

5. The ultrasonic scalpel as described in claim 1, characterized in that, The side wall of the mounting sleeve (23) is provided with a locking ring (27), and the displacement sensor (25) is disposed on the end face of the locking ring (27).

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