Ultrasonic knife, controller and jaw opening degree and jaw pressure detection method
By incorporating a displacement sensor and detection ring into the ultrasonic scalpel, the displacement distance of the trigger sleeve is detected, thus resolving the issues of detection result deviation and sensor damage caused by high-frequency vibration at the jaws. This achieves accurate jaw closure status judgment and extends sensor lifespan.
Patent Information
- Application Number
- CN202511782456.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2026-01-09
AI Technical Summary
When a sensor is installed at the jaw of an existing ultrasonic scalpel, high-frequency vibration can cause deviations in the detection results or damage to the sensor.
By setting a displacement sensor and detection ring in the ultrasonic scalpel, the displacement distance of the trigger sleeve is detected, and the closing state of the jaws is determined by the controller, thus avoiding the need to install the sensor directly at the jaws.
It can effectively determine the closing state of the jaws, avoid deviations in detection results, and improve the service life of the sensor.
Smart Images
Figure CN121287243A_ABST
Abstract
Description
[0001] The present application is a divisional application of the application with the application number CN202411818980.6 and the title of "Ultrasonic Knife, Use Method, Jaw Opening Degree and Jaw Pressure Detection Method" filed on December 11, 2024. TECHNICAL FIELD The present application belongs to the technical field of ultrasonic knives, and particularly relates to an ultrasonic knife, a controller, a jaw opening degree and a jaw pressure detection method. BACKGROUND
[0002] An ultrasonic knife is a modern surgical tool, and its core function is to convert electrical energy into mechanical energy through a transducer. Specifically, when an ultrasonic wave generator generates an excitation current of an ultrasonic frequency and transmits the excitation current to the transducer, the transducer generates mechanical vibration under the action of the excitation current. The vibration is transmitted and amplified to the waveguide rod tip through the waveguide rod, and the high-speed vibrating waveguide rod tip generates friction heat when contacting tissues or organs, thereby denaturing proteins in the tissues or organs, so as to achieve the effects of cutting and coagulation.
[0003] A conventional ultrasonic knife usually includes a trigger assembly and a knife rod assembly. The trigger assembly is connected to the trigger sleeve in the knife rod assembly through a sliding block. The trigger assembly is pressed to the bottom to drive the jaw in the knife rod assembly to be completely closed to complete cutting. However, in use, when the trigger assembly is pressed to the end point, the jaw may be clamped to foreign matter and cannot be completely closed. Therefore, it is necessary to detect the closing state of the jaw. Since the jaw is subjected to high-frequency vibration, the use of a conventional sensor may cause deviation of the detection result or even damage to the sensor.
[0004] Therefore, how to avoid the sensor installed at the jaw from being damaged due to high-frequency vibration at the jaw is a technical problem to be solved in the field.
[0005] It should be noted that the above information disclosed in the background section is only used to understand the background of the present application, and therefore, the above description is not considered to constitute prior art information. SUMMARY
[0006] The present application provides at least an ultrasonic knife, a controller, a jaw opening degree and a jaw pressure detection method.
[0007] In a first aspect, the embodiments of the present disclosure provide an ultrasonic knife, comprising: a slider; a knife rod assembly comprising a knife body and a trigger sleeve and a mounting sleeve which are sequentially sleeved; wherein a front end of the mounting sleeve is hingedly connected with a jaw, an active arm of the jaw is connected with the trigger sleeve, the trigger sleeve is connected with the slider so that the trigger sleeve slides under the driving of the slider to drive the jaw to close by abutting against the knife body; and a side wall of the mounting sleeve is provided with a displacement sensor, a side wall of the trigger sleeve is provided with a detection ring which is adapted to be detected by the displacement sensor to detect the displacement distance of the trigger sleeve and transmit to a controller to determine the closing state of the jaw by the controller.
[0008] In an optional embodiment, the closing state comprises: jaw opening degree; the controller is configured to receive the displacement distance of the trigger sleeve to obtain the angle C of the closed jaw, wherein: in the formula, the initial angle of the jaw is A, the length of the active arm of the jaw is L1, and the displacement distance of the trigger sleeve is D; the angle C of the closed jaw is arcsin (sin A-D / L1).
[0009] In an optional embodiment, the closing state comprises: jaw pressure; the controller is configured to receive the detection data of the displacement sensor to obtain the pressure F3 of the closed jaw, 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 of the closed jaw is C, the maximum displacement distance of the slider is L3, the pre-tightening force of the wave spring body is F1, the stiffness coefficient of the wave spring body is K, and the displacement distance of the trigger sleeve is D; the pressure F3 of the closed jaw is 2*L1*cosC* (F1+K (L3-D)) / L2.
[0010] In an optional embodiment, a tail end of the trigger sleeve is provided with a wave spring assembly, the wave spring assembly comprises a mounting ring, the mounting ring is sleeved on the side wall of the trigger sleeve and buckled with the trigger sleeve, the detection ring is arranged on the end face of the mounting ring, and the mounting ring is connected with the slider.
[0011] In an optional embodiment, a side wall of the mounting ring is provided with a placement ring groove, a sliding ring is slidably arranged in the placement ring groove, a side wall of the sliding ring is provided with a clamping groove, the slider is inserted into the clamping groove to drive the sliding ring, and an end face of the sliding ring is connected with an end face of the placement ring groove through the wave spring body, and the wave spring body is always in a compressed state.
[0012] In an optional embodiment, the mounting ring comprises a pair of sleeve rings, the two ends of the sleeve ring are respectively provided with convex rings to form the placement ring groove, and the side walls of the sleeve rings are threadedly connected to adjust the initial compression degree 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: Step S1: Press the trigger assembly to drive the trigger sleeve to slide, thereby causing the jaws to close; Step S2: The displacement sensor detects the displacement distance of the trigger sleeve and transmits it to the controller; In step S3, the controller detects the opening degree and pressure of the jaws.
[0017] The beneficial effects of this invention are that the ultrasonic scalpel, controller, jaw opening detection method, and jaw pressure detection method detect the displacement distance of the trigger sleeve through a displacement sensor and determine the amount of jaw rotation through the 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.
[0018] 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.
[0019] 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
[0020] 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.
[0021] Figure 1 A perspective view of an ultrasonic scalpel provided in an embodiment of this disclosure; Figure 2 A cross-sectional view of an ultrasonic scalpel provided in an embodiment of this disclosure; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 A schematic diagram of a jaw opening detection method provided in an embodiment of this disclosure; Figure 5 This is a schematic diagram of a jaw pressure detection method provided in an embodiment of the present disclosure.
[0022] In the picture: 1. Slider; 2. Tool holder assembly; 21. Tool body; 22. Trigger sleeve; 23. Mounting sleeve; 24. Jaws; 25. Displacement sensor; 26. Detection ring; 27. Locking ring; 3. Spring assembly; 31. Mounting ring; 31a. Placement ring groove; 31b. Collar ring; 32. Sliding ring; 32a. Locking groove; 33. Spring body. Detailed Implementation
[0023] 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.
[0024] 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.
[0025] 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.
[0026] 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.
[0027] 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.
[0028] 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.
[0029] 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.
[0030] Based on the above research, this disclosure provides an ultrasonic scalpel, a controller, and a method for detecting jaw opening and jaw pressure. By detecting the displacement distance of the trigger sleeve and cooperating with the controller, the closing state of the jaws can be determined.
[0031] 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.
[0032] 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.
[0033] 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.
[0034] See Figures 1 to 5 This invention illustrates an ultrasonic scalpel, a controller, 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.
[0035] 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).
[0036] 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.
[0037] 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.
[0038] 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.
[0039] 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.
[0040] 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.
[0041] 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.
[0042] 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.
[0043] This embodiment also provides a method for using an ultrasonic scalpel, including: Step S1: Press the trigger assembly to drive the trigger sleeve 22 to slide, thereby causing the jaws 24 to close; 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. 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.
[0044] 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.
[0045] 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.
[0046] 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.
[0047] 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.
[0048] 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); A tool holder assembly (2) includes a tool body (21) and a trigger sleeve (22) and a mounting sleeve (23) sequentially fitted together; wherein, the front end of the mounting sleeve (23) is hinged with a jaw (24), and the active arm of the jaw (24) is connected to the trigger sleeve (22); and 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).
2. The ultrasonic scalpel as described in claim 1, characterized in that, 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).
3. The ultrasonic scalpel as described in claim 1, characterized in that, Also includes: The trigger sleeve (22) is connected to the slider (1) so that the trigger sleeve (22) slides under the action of the slider (1) and drives the jaws (24) to fit against the blade body (21) to complete the closing of the jaws (24); 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.
4. The ultrasonic scalpel as described in any one of claims 1-3, 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).
5. The ultrasonic scalpel as described in claim 4, 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.
6. The ultrasonic scalpel as described in claim 5, 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).
7. 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).
8. An ultrasonic scalpel, characterized in that, include: Displacement sensor (25) is used to detect the displacement distance of the trigger sleeve (22); 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 The angle C after the jaws (24) are closed is C = arcsin(sinA-D / L1); 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; and / or 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.
9. A controller, characterized in that, The controller is electrically connected to the displacement sensor (25) and detects the displacement distance of the trigger sleeve (22) and transmits it to the controller; The controller calculates the jaw opening and / or jaw pressure in real time.
10. A method of using an ultrasonic scalpel as described in any one of claims 1-7, characterized in that, include: Step S1: Press the trigger assembly to drive the trigger sleeve (22) to slide, thereby driving the jaws (24) to close; In step S2, the displacement sensor (25) detects the displacement distance of the trigger sleeve (22) and transmits it to the controller; In step S3, the controller detects the opening degree of the jaws (24) and the pressure of the jaws (24).