Ultrasonic knife, use method and jaw opening degree and jaw pressure detection method

Abstract

The invention belongs to the technical field of ultrasonic knives, and particularly relates to an ultrasonic knife, a use method and a jaw opening degree and jaw pressure detection method. The cutter bar assembly comprises a cutter body, a trigger sleeve and a mounting sleeve, wherein the trigger sleeve and the mounting sleeve are sequentially arranged in a sleeving mode. Wherein a jaw is hinged to the front end of the mounting sleeve, a driving arm of the jaw is connected with the trigger sleeve, and the trigger sleeve is connected with the sliding block, so that the trigger sleeve is driven by the sliding block to slide, and the jaw is driven to be attached to the cutter body to complete closing of the jaw; a displacement sensor is arranged on the side wall of the mounting sleeve, a detection ring is arranged on the side wall of the triggering sleeve, the detection ring is suitable for being detected by the displacement sensor so as to detect the displacement distance of the triggering sleeve and transmit the displacement distance to the controller, and the closing state of the jaw is judged through the controller; the displacement distance of the trigger sleeve is detected through the displacement sensor, and the rotation amount of the jaw is judged through the controller, so that the closing state of the jaw is judged.

Description

Technical Field

[0001] The present invention belongs to the technical field of ultrasonic scalpels, and in particular relates to an ultrasonic scalpel, a use method, and a method for detecting jaw opening and jaw pressure. Background Art

[0002] The ultrasonic scalpel is a modern surgical tool. Its core function is to convert electrical energy into mechanical energy through a transducer. Specifically, when the ultrasonic generator generates an excitation current of ultrasonic frequency, which is transmitted to the transducer, the transducer generates mechanical vibration under the action of the excitation current. The vibration is transmitted and amplified to the tip of the waveguide rod through the waveguide rod. The high-speed vibrating waveguide rod tip will generate friction heat when it contacts tissue or organs, thereby denaturing the protein in the tissue or organ, thereby achieving the effect 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 slider. The trigger assembly is pressed to the bottom to drive the jaws in the knife rod assembly to close completely to complete the cutting. However, during use, when the trigger assembly is pressed to the end point, the jaws may clamp foreign objects and cannot be completely closed. It is necessary to detect the closing state of the jaws. Due to the high-frequency vibration at the jaws, the use of conventional sensors is likely to cause deviations in the detection results or even damage the sensors.

[0004] Therefore, how to prevent the sensor installed at the jaws from causing deviation in 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 above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The embodiments of the present disclosure at least provide an ultrasonic scalpel, a method of use, and a method for detecting jaw opening and jaw pressure.

[0007] In the first aspect, the embodiments of the present disclosure provide an ultrasonic knife, a method of use, and a method for detecting jaw opening and jaw pressure, comprising: a slider; a knife rod assembly, which includes a knife body and a trigger sleeve and a mounting sleeve which are sequentially sleeved; wherein the front end of the mounting sleeve is hinged with 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 drive of the slider, driving the jaw to fit the knife body to complete the closing of the jaw; and the side wall of the mounting sleeve is provided with a displacement sensor, and 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, so as to detect the displacement distance of the trigger sleeve and transmit it to the controller, and the closed state of the jaw is judged by the controller.

[0008] In an optional embodiment, the closed state includes: the opening degree of the jaws; the controller is configured to receive the displacement distance of the trigger sleeve to obtain the angle C after the jaws are closed, wherein; wherein 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 = arcsin (sinA-D / L1).

[0009] In an optional embodiment, the closed state includes: jaw pressure; the controller is configured to receive detection data from the displacement sensor to obtain a 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 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 at the jaw closing mouth=2*L1*cosC*(F1+K(L3-D)) / L2.

[0010] In an optional embodiment, a wave spring assembly is provided at the tail end of the trigger sleeve, and the wave spring assembly includes a mounting ring, the mounting ring is sleeved on the side wall of the trigger sleeve and is buckled with the trigger sleeve, the detection ring is provided on the end face of the mounting ring, and the mounting ring is connected to the slider.

[0011] In an optional embodiment, a placement ring groove is provided on the side wall of the mounting ring, a sliding ring is slidably arranged in the placement ring groove, a clamping groove is provided on the side wall of the sliding ring, the slider is inserted in the clamping 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 an optional embodiment, the mounting ring includes a pair of collars, both ends of the collars are provided with convex rings to form placement ring grooves, and the side walls of the collars are threadedly connected to adjust the initial compression degree of the wave spring body.

[0013] In an optional embodiment, a clamping ring is provided on the side wall of the mounting sleeve, and the displacement sensor is provided on the end surface of the clamping ring.

[0014] In a second aspect, an embodiment of the present disclosure provides a method for detecting the degree of jaw opening, 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 an angle C after the jaws are closed, wherein the angle C of the jaws after closing = arcsin (sinA-D / L1); wherein 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] In a third aspect, an embodiment of the present disclosure provides a method for detecting jaw pressure, comprising: a displacement sensor for detecting the displacement distance of a trigger sleeve; a controller configured to receive detection data of the displacement sensor to obtain a 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 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 at the jaw closing opening = 2*L1*cosC*(F1+K(L3-D)) / L2.

[0016] In a fourth aspect, an embodiment of the present disclosure provides a method for using an ultrasonic scalpel, comprising: Step S1, pressing the trigger assembly to drive the trigger sleeve to slide, so as to drive the jaws to close; Step S2, the displacement sensor detects the displacement distance of the trigger sleeve and transmits it to the controller; Step S3, the controller detects the opening degree of the jaws and the pressure of the jaws.

[0017] The beneficial effects of the present invention are that the ultrasonic scalpel, jaw opening detection method, jaw pressure detection method and use method detect the displacement distance of the trigger sleeve through a displacement sensor, and determine the rotation amount of the jaws through a controller, thereby determining the closing state of the jaws, avoiding the installation of sensors at the jaws to cause deviations in the detection results, and at the same time increasing the service life of the sensor.

[0018] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A three-dimensional diagram of an ultrasonic scalpel provided in an embodiment of the present disclosure; Figure 2 A cross-sectional view of an ultrasonic scalpel provided in an embodiment of the present disclosure; Figure 3 for Figure 2 The enlarged view of point A in the middle; Figure 4 A schematic diagram of a method for detecting jaw opening provided by an embodiment of the present disclosure; Figure 5 A schematic diagram of a jaw pressure detection method provided in an embodiment of the present disclosure.

[0022] In the figure: 1. Slider; 2. Cutter bar assembly; 21. Cutter body; 22. Trigger sleeve; 23. Mounting sleeve; 24. Jaw; 25. Displacement sensor; 26. Detection ring; 27. Clamping ring; 3. Wave spring assembly; 31. Mounting ring; 31a. Placement ring groove; 31b. Sleeve ring; 32. Sliding ring; 32a. Clamping groove; 33. Wave spring body. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0025] In this article, when an element or layer is referred to as being "located on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to another element or layer, or there may be intermediate elements or layers. In contrast, when an element is referred to as being "directly on," "directly engaged to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intermediate elements or layers. Other words used to describe the relationship 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 associated listed items.

[0026] Herein, example 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 modifying 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 terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude 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 interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0028] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like 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. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0029] Through research, it is found that in the prior art, the jaws cannot make a good judgment when they clamp a foreign object, which is the problem and purpose to be solved by the invention.

[0030] Based on the above research, the embodiments of the present disclosure provide an ultrasonic scalpel, a method of use, a method for detecting the jaw opening degree and the jaw pressure, which determines the closed state of the jaw by detecting the displacement distance of the trigger sleeve and cooperating with the controller.

[0031] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0034] See also Figures 1 to 5 , shows an ultrasonic knife, a method of using, a method for detecting the opening degree of the jaw 24 and the pressure of the jaw 24, comprising: a slider 1; a knife rod assembly 2, which includes a knife body 21 and a trigger sleeve 22 and a mounting sleeve 23 which are sequentially sleeved; wherein the front end of the mounting sleeve 23 is hinged with a jaw 24, 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 drive of the slider 1, driving the jaw 24 to fit the knife body 21 to complete the closing of the jaw 24; and the side wall 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 suitable for being detected by the displacement sensor 25 to detect the displacement distance of the trigger sleeve 22 and transmit it to the controller, and the closed state of the jaw 24 is judged by the controller; in short, the displacement distance of the trigger sleeve 22 is detected by the displacement sensor 25, and the rotation amount of the jaw 24 is judged by the controller, thereby judging the closed state of the jaw 24, avoiding the installation of a sensor at the jaw 24, causing deviation of the detection result, and at the same time improving the service life of the sensor.

[0035] In some embodiments, Figure 4The closed state includes: 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 of the jaws 24 after closing, wherein; wherein 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 of the jaws 24 after closing = arcsin (sinA-D / L1); in short, among all the parameters, only the displacement distance D of the trigger sleeve 22 is a variable. By receiving the displacement distance D of the trigger sleeve 22, Figure 4 Establish trigonometric function in the shaded triangle, (L1*sinA-(D+L1*(cosC-cosA)*tanC)) / (L1*cosA)=tanC, and obtain that the angle C of the jaws 24 after closing is arcsin(sinA-D / L1).

[0036] In some embodiments, Figure 5 The closed state is shown to include: the pressure of the jaws 24; the controller is 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 force 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 F3 at the closed mouth of the jaws 24 = 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 the maximum, and drives the trigger sleeve 22 to slide through the wave spring body 33, wherein the wave spring body 33 absorbs part of the pressure and compresses, and its compression distance is (L3-D), and the pressure absorbed is K(L3-D), see Figure 5 When the 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 the resultant force F2 at the end of the active arm of the jaw 24 is F1+K(L3-D). F3 is the pressure uniformly applied by the passive arm of the jaw 24, and F2*L1=(F3*L2) / 2 can be obtained.

[0037] In some embodiments, Figure 2-Figure 3 It is shown that a wave spring assembly 3 is provided at the tail end of the trigger sleeve 22, and the wave spring assembly 3 includes a mounting ring 31, the mounting ring 31 is sleeved on the side wall of the trigger sleeve 22 and is buckled with the trigger sleeve 22, the detection ring 26 is arranged 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 is buckled with the trigger sleeve 22 to complete the driving of the trigger sleeve 22.

[0038] In some embodiments, Figure 2-Figure 3 It is shown that a placement ring groove 31a is provided on the side wall of the mounting ring 31, a sliding ring 32 is slidably arranged in the placement ring groove 31a, a clamping groove 32a is provided on the side wall of the sliding ring 32, the slider 1 is inserted in the clamping groove 32a to drive the sliding ring 32, and the end face of the sliding ring 32 is connected to the end face of the placement ring groove 31a through a wave spring body 33, and the wave spring body 33 is always in a compressed state; in short, the sliding ring 32 is slidably arranged in the placement ring groove 31a, and is connected to the end face of the placement ring groove 31a through the wave spring body 33, so that the sliding ring 32 needs to overcome the preload force of the wave spring body 33 before driving the mounting ring 31; further, a clamping groove 32a is provided on the side wall of the sliding ring 32 to clamp the slider 1.

[0039] In some embodiments, Figure 2-Figure 3 It is shown that the mounting ring 31 includes a pair of collars 31b, and both ends of the collars 31b are respectively provided with convex rings to form a placement ring groove 31a, and the side walls of the collars 31b are threadedly connected to adjust the initial compression degree of the wave spring body 33; in short, the mounting ring 31 is detachably connected and can be rotated to adjust the length of the placement ring groove 31a to adjust the preload force of the wave spring body 33.

[0040] In some embodiments, Figure 2-Figure 3 It is shown that the side wall of the mounting sleeve 23 is provided with a clamping ring 27, and the displacement sensor 25 is arranged on the end face of the clamping ring 27; in short, the mounting sleeve 23 is connected to the outer shell of the ultrasonic scalpel through the clamping ring 27, and one end of the clamping ring 27 extends into the outer shell of the ultrasonic scalpel, and the clamping ring 27 is provided with an annular groove for installing the displacement sensor 25.

[0041] See also Figure 4 The present embodiment further provides a method for detecting the opening degree of the jaw 24, comprising: a displacement sensor 25, which is used to detect the displacement distance of the trigger sleeve 22; a controller, which is configured to receive the displacement distance of the trigger sleeve 22 to obtain an angle C of the jaw 24 after closing, wherein the angle C of the jaw 24 after closing=arcsin(sinA-D / L1); wherein the initial angle of the jaw 24 is A, the length of the active arm of the jaw 24 is L1, and the displacement distance of the trigger sleeve 22 is D.

[0042] See also Figure 5The present embodiment further provides a method for detecting the pressure of the jaw 24, comprising: a displacement sensor 25, which is used to detect the displacement distance of the trigger sleeve 22; a controller, which is configured to receive the detection data of 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 force 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 F3 of the closed jaw of the jaw 24 = 2*L1*cosC*(F1+K(L3-D)) / L2.

[0043] This embodiment also provides a method for using an ultrasonic scalpel, including: Step S1, pressing the trigger assembly to drive the trigger sleeve 22 to slide, thereby driving the jaws 24 to close; 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 of the jaw 24 and the pressure of the jaw 24; the controller calculates the opening degree of the jaw 24 and the pressure of the jaw 24 in real time.

[0044] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0046] Spatially relative terms, such as "inside", "outside", "below", "below", "down", "above", "on", etc., may be used herein to facilitate description of the relationship of one element or feature to another element or feature as illustrated in the figure. In addition to the orientation depicted in the figure, 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 turned over, the elements described as "below" or "below" other elements or features will be oriented to be "above" other elements or features. Therefore, the example term "below" can cover the orientation above and below. The device can 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, the terms "about," "approximately," "substantially," etc., when used to describe a numerical value, mean a variation of + / - 10% of the value.

[0048] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An ultrasonic scalpel, characterized in that: include: Slider(1); A knife bar assembly (2), comprising a knife body (21) and a trigger sleeve (22) and a mounting sleeve (23) which are sleeved in sequence; wherein a jaw (24) is hingedly connected to the front end of the mounting sleeve (23); an 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 drive of the slider (1), driving the jaw (24) to fit the knife body (21) to complete the closing of the jaw (24); and A displacement sensor (25) is provided on the side wall of the mounting sleeve (23), and a detection ring (26) is provided on the side wall of the trigger sleeve (22). The detection ring (26) is suitable for being detected by the displacement sensor (25) to detect the displacement distance of the trigger sleeve (22) and transmit it to the controller, so that the closed state of the jaws (24) is determined by the controller.

2. The ultrasonic scalpel according to claim 1, characterized in that: The closed state includes: the opening degree of the jaws (24); The controller is configured to receive the displacement distance of the trigger sleeve (22) to obtain an 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 closed angle of the jaws (24) is C=arcsin(sinA-D / L1).

3. The ultrasonic scalpel according to claim 1, characterized in that: 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) are 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 of the jaw (24) after closing is C, the maximum displacement distance of the slider (1) is L3, the preload force 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 at the closing mouth of the jaws (24) is F3 = 2*L1*cosC*(F1+K(L3-D)) / L2.

4. The ultrasonic scalpel according to any one of claims 1 to 3, characterized in that: A wave spring assembly (3) is provided at the rear end of the trigger sleeve (22), the wave spring assembly (3) comprising a mounting ring (31), the mounting ring (31) being sleeved on the side wall of the trigger sleeve (22) and being buckled with the trigger sleeve (22), the detection ring (26) being provided on the end surface of the mounting ring (31), and The mounting ring (31) is connected to the slider (1).

5. The ultrasonic scalpel according to claim 4, characterized in that: The side wall of the mounting ring (31) is provided with a placement ring groove (31a), a sliding ring (32) is slidably arranged in the placement ring groove (31a), a clamping groove (32a) is arranged on the side wall of the sliding ring (32), and the sliding block (1) is inserted into the clamping groove (32a) to drive the sliding ring (32); and The end surface of the sliding ring (32) is connected to the end surface of the placement ring groove (31a) via a wave spring body (33), and the wave spring body (33) is always in a compressed state.

6. The ultrasonic scalpel according to claim 5, characterized in that: The mounting ring (31) comprises a pair of collars (31b), with convex rings respectively provided at both ends of the collars (31b) to form a placement ring groove (31a), and the side walls of the collars (31b) are threadedly connected to adjust the initial compression degree of the wave spring body (33).

7. The ultrasonic scalpel according to claim 1, characterized in that: A clamping ring (27) is provided on the side wall of the mounting sleeve (23), and the displacement sensor (25) is arranged on the end surface of the clamping ring (27).

8. A method for detecting the opening degree of a jaw (24), characterized in that: include: A displacement sensor (25) for detecting a displacement distance of the trigger sleeve (22); A controller is configured to receive the displacement distance of the trigger sleeve (22) to obtain an angle C after the jaws (24) are closed, wherein The angle C of the jaws (24) after closing is 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.

9. A method for detecting jaw (24) pressure, characterized in that: include: A displacement sensor (25) for detecting a displacement distance of the trigger sleeve (22); A controller is configured to receive detection data from the displacement sensor (25) to obtain a pressure F3 after the jaws (24) are 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 of the jaw (24) after closing is C, the maximum displacement distance of the slider (1) is L3, the preload force 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 at the closing mouth of the jaws (24) is F3 = 2*L1*cosC*(F1+K(L3-D)) / L2.

10. A method for using the ultrasonic scalpel according to any one of claims 1 to 8, characterized in that: include: Step S1, pressing the trigger assembly to drive the trigger sleeve (22) to slide, thereby driving the jaws (24) to close; 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 degree of opening of the jaws (24) and the pressure of the jaws (24).

Images