Ultrasonic knife

Abstract

The utility model belongs to the field of surgical instruments, and particularly provides an ultrasonic scalpel which comprises a handle shell, a clamp assembly, a driving assembly and a variable force assembly, the clamp assembly comprises a scalpel head and swing forceps, the swing forceps can rotate relative to the scalpel head, and opening and closing states of the swing forceps and the scalpel head comprise a full-opening state, a full-closing state and a semi-closing state; the driving assembly comprises a trigger and a transmission unit, the trigger is arranged on the handle shell, and the trigger drives the swing clamp to rotate through the transmission unit; the variable force assembly is used for providing variable acting force for the driving assembly between the full-open state and the full-closed state, and the variable acting force suddenly changes at least in the semi-closed state. According to the application, an obvious mutation of acting force can be formed in the semi-closed state, so that a user can obviously sense that the clamp assembly reaches the semi-closed state, and the user can maintain the clamp assembly in the semi-closed state.

Description

Technical Field

[0001] The present application belongs to the technical field of surgical instruments, and more specifically, to an ultrasonic scalpel. Background Art

[0002] During surgical operations, it is often necessary to face very narrow operating spaces, rich vascular tissue, easy to be damaged, and easy to bleed. The ultrasonic scalpel is often required to be in a state without clamping any tissue and the jaws of the ultrasonic scalpel are half-closed (the blade head and the tissue pad are not in contact or are in little contact) to perform fine operations such as splitting, scraping, and flicking to separate the surface tissue adhering to the target area; it is also often necessary to reduce the jaw angle of the ultrasonic scalpel by half-closing the jaws so that the jaws can easily enter the narrow space for cutting and coagulation operations without causing damage to blood vessels or other tissues, bleeding, and other abnormalities. It is difficult to control the jaws of existing ultrasonic scalpels in a semi-closed state, which makes the tissue pad very easy to wear, and thus causes the ultrasonic scalpel to wear very quickly. Summary of the invention

[0003] The purpose of the present application is to provide an ultrasonic scalpel to solve the problem in the prior art that it is difficult to control the jaws of the ultrasonic scalpel to be in a semi-closed state, resulting in easy wear of the tissue pad and rapid loss of the ultrasonic scalpel.

[0004] To achieve the above purpose, the technical solution adopted in this application is:

[0005] An ultrasonic scalpel is provided, comprising:

[0006] Handle housing;

[0007] A clamp assembly, the clamp assembly comprising a cutter head and a swing clamp, the swing clamp can rotate relative to the cutter head, and the opening and closing states of the swing clamp and the cutter head include a fully open state, a fully closed state, and a semi-closed state;

[0008] A driving assembly, the driving assembly comprising a trigger and a transmission unit, the trigger being arranged on the handle housing, and the trigger driving the swing pliers to rotate through the transmission unit;

[0009] A variable force component is used to provide a variable force to the drive component between the fully open state and the fully closed state, and the variable force jumps at least in the semi-closed state.

[0010] The variable force component is provided to provide a variable force to the driving component, and the variable force jumps at the semi-closed state, thereby causing the semi-closed state to form a sudden change in which the force is significantly increased or significantly decreased, that is, when reaching the semi-closed state from the fully open state, the force is significantly increased; when reaching the semi-closed state from the fully closed state, the force is significantly reduced. This force is transmitted to the user through the driving component, so that the user can clearly feel that the clamp assembly has reached the semi-closed state, which is beneficial for the user to maintain the clamp assembly in the semi-closed state.

[0011] As a technical solution, the variable force component includes an elastic member and / or a damping member; wherein the elastic member includes at least one of a compression spring, a tension spring, a torsion spring, and a leaf spring; and the damping member includes a damper.

[0012] The variable force component can adopt different structural types, which is conducive to the designer to make flexible choices based on the existing structural layout of different ultrasonic knives, can greatly reduce the design difficulty, and can significantly improve the versatility of this design.

[0013] As a technical solution, the variable force component includes:

[0014] a first elastic member, disposed inside the handle housing, the first elastic member providing a first force to the drive assembly between the fully open state and the fully closed state;

[0015] A second elastic member is arranged inside the handle housing, and the second elastic member provides a second force to the drive assembly between the semi-closed state and the fully closed state, so that when the drive assembly drives the swing pliers to move between the semi-closed state and the fully closed state, it is simultaneously subjected to the first force and the second force.

[0016] Firstly, by providing the first elastic member, and the first elastic member provides the driving assembly with a first force having a movement tendency along the fully open state between the fully open state and the fully closed state, when the user does not press the driving assembly, the driving assembly is subjected to the first force generated by the first elastic member, thereby keeping the clamp assembly in the fully open state; when the user presses the driving assembly, the driving assembly can overcome the first force and can drive the clamp assembly to the semi-closed state and the fully closed state in turn, thereby realizing the state adjustment of the clamp assembly; secondly, by providing the second elastic member, and the second elastic member provides the driving assembly with a first force having a movement tendency along the fully open state between the semi-closed state and the fully closed state The second force along the movement trend of the fully open state, when the user presses the driving assembly and makes the driving assembly reach the semi-closed state, the force along the movement trend of the fully open state received by the driving assembly is the sum of the first force and the second force, and this force is significantly greater than the first force, that is, a sudden increase or decrease in force is formed in the semi-closed state, that is, when reaching the semi-closed state from the fully open state, the force increases significantly; when reaching the semi-closed state from the fully closed state, the force decreases significantly, and this force is transmitted to the user through the driving assembly, so that the user can clearly feel that the clamp assembly has reached the semi-closed state, which is beneficial for the user to maintain the clamp assembly in the semi-closed state.

[0017] As a technical solution, the transmission unit includes a connecting rod, a driving block, a connecting block and an inner sleeve connected in sequence, one end of the inner sleeve is connected to the swing pliers, the other end of the inner sleeve is connected to the driving block through the connecting block, the driving block is slidably connected to the handle housing, the trigger is connected to the driving block through the connecting rod, and the trigger can drive the connecting rod, the driving block, the connecting block and the inner sleeve to move;

[0018] The first elastic member acts on any one of the trigger, the connecting rod, the driving block, the connecting block and the inner sleeve; the second elastic member acts on any one of the trigger, the connecting rod, the driving block, the connecting block and the inner sleeve.

[0019] The first elastic member and the second elastic member can act on any one of the connecting structures between the trigger and the swinging forceps, which is conducive to the designer to flexibly design according to the existing structural layout of different ultrasonic knives, can greatly reduce the design difficulty, and can significantly improve the versatility of this design.

[0020] As a technical solution, the first elastic member and the second elastic member are arranged in a nested manner.

[0021] By arranging the first elastic member and the second elastic member to be nested inside and outside, the overall structure can be made more compact, which is conducive to the miniaturization of the ultrasonic scalpel.

[0022] As a technical solution, one end of the second elastic member abuts against the handle housing, and in the fully open state, the other end of the second elastic member has no contact with the drive assembly, and between the semi-closed state and the fully closed state, the other end of the second elastic member abuts against the drive assembly and provides the second force to the drive assembly.

[0023] By making the first elastic member and the second elastic member abut against the driving assembly at different motion nodes, and thus providing different forces to the driving assembly at different motion nodes, this method of realizing the variable force is simple, low-cost and highly reliable.

[0024] As a technical solution, in the fully opened state, the other end of the second elastic member is connected to the handle housing, and the second elastic member is in a pre-deformed state.

[0025] By placing the second elastic member in a pre-deformed state, the initial value of the second force provided by the second elastic member to the drive assembly can be made larger, thereby making the jump of the variable force more obvious, thereby helping the user to more clearly perceive that the clamp assembly has reached the semi-closed state.

[0026] As a technical solution, the stiffness of the second elastic member is greater than the stiffness of the first elastic member.

[0027] By designing the stiffness of the second elastic member to be greater than the stiffness of the first elastic member, it can be ensured that in the semi-closed state, the force acting on the drive assembly undergoes a significant mutation, so that the user can more accurately judge the state of the clamp assembly.

[0028] As a technical solution, the first elastic member is a compression spring, one end of the first elastic member abuts against the handle housing, and the other end of the first elastic member abuts against the transmission unit;

[0029] The second elastic member is a torsion spring, and the trigger is provided with a crimping portion. In the fully open state, the other end of the second elastic member has no contact with the crimping portion, and between the semi-closed state and the fully closed state, the other end of the second elastic member abuts against the crimping portion and provides the second force to the crimping portion.

[0030] By configuring the first elastic member to be connected to the drive block and configuring the second elastic member to be connected to the crimping portion of the trigger, the first elastic member and the second elastic member can be dispersedly distributed, thereby avoiding the problem of increased difficulty in structural design due to concentrated distribution of the first elastic member and the second elastic member, and also reducing the overall difficulty of assembling the first elastic member and the second elastic member.

[0031] As a technical solution, the variable force component includes a controllable gas spring, and the controllable gas spring provides a sudden change in force at a telescopic position corresponding to the semi-closed state.

[0032] As a technical solution, the ultrasonic knife further includes a prompt device, and the prompt device is triggered in the semi-closed state.

[0033] By providing the prompt device, the user can be informed of the current state of the clamp assembly more clearly and reliably, further reducing the probability of the user misjudging the state.

[0034] An ultrasonic scalpel is provided, comprising:

[0035] Handle housing;

[0036] A clamp assembly, the clamp assembly comprising a cutter head and a swing clamp, the swing clamp can rotate relative to the cutter head, and the opening and closing states of the swing clamp and the cutter head include a fully open state, a fully closed state, and a semi-closed state;

[0037] A driving assembly, the driving assembly comprising a trigger and a transmission unit, the trigger being arranged on the handle housing, and the trigger driving the swing pliers to rotate through the transmission unit;

[0038] The warning component is used to provide prompt information including at least one of a vibration signal, a sound signal, and a light signal at least in the semi-closed state.

[0039] By providing prompt information in the semi-closed state through the warning component, the user can clearly perceive that the clamp assembly has reached the semi-closed state, which is conducive to the user maintaining the clamp assembly in the semi-closed state.

[0040] As a technical solution, the warning component includes a force sensor and / or a displacement sensor, and the force sensor and / or the displacement sensor are used to sense the force information and / or the displacement information in at least the semi-closed state, so as to use the force information and / or the displacement information to control the warning component to output the prompt information.

[0041] The beneficial effects of the ultrasonic scalpel provided by this application are:

[0042] On the one hand, the variable force component is provided to provide a variable force to the driving component, and the variable force jumps at the semi-closed state, thereby causing the semi-closed state to form a sudden change in which the force is significantly increased or significantly decreased, that is, when reaching the semi-closed state from the fully open state, the force is significantly increased; when reaching the semi-closed state from the fully closed state, the force is significantly decreased; the force is transmitted to the user through the driving component, thereby enabling the user to clearly perceive that the clamp assembly has reached the semi-closed state, thereby facilitating the user to maintain the clamp assembly in the semi-closed state.

[0043] On the other hand, by providing prompt information in the semi-closed state through the warning component, the user can clearly perceive that the clamp assembly has reached the semi-closed state, which is conducive to the user maintaining the clamp assembly in the semi-closed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0045] Figure 1 A schematic diagram of an ultrasonic scalpel provided in an embodiment of the present application;

[0046] Figure 2 A three-dimensional schematic diagram of a clamp assembly provided in an embodiment of the present application in a fully opened state;

[0047] Figure 3 A front view of the clamp assembly provided in an embodiment of the present application in a fully opened state;

[0048] Figure 4 A partial schematic diagram of an ultrasonic scalpel in a fully opened state provided in an embodiment of the present application Figure 1 ;

[0049] Figure 5 A partial schematic diagram of an ultrasonic scalpel in a fully opened state provided in an embodiment of the present application Figure 2 ;

[0050] Figure 6 A partial schematic diagram of an ultrasonic scalpel in a fully opened state provided in an embodiment of the present application Figure 3 ;

[0051] Figure 7 A three-dimensional schematic diagram of a clamp assembly provided in an embodiment of the present application in a semi-closed state;

[0052] Figure 8 A front view of the clamp assembly provided in an embodiment of the present application in a semi-closed state;

[0053] Fig. 9 A partial schematic diagram of an ultrasonic scalpel in a semi-closed state provided in an embodiment of the present application Figure 1 ;

[0054] Fig.10 A partial schematic diagram of an ultrasonic scalpel in a semi-closed state provided in an embodiment of the present application Figure 2 .

[0055] Among them, the reference numerals in the figure are:

[0056] 1. Handle housing; 11. Mounting column; 12. Mounting slot; 13. Mounting shaft;

[0057] 2. Clamp assembly; 21. Tissue pad; 22. Blade head; 23. Clamp claw;

[0058] 3. Driving assembly; 31. Trigger; 311. Crimping part; 312. Center part; 313. Mounting part; 314. Connecting part; 315. Operating part; 32. Driving block; 33. Connecting rod; 34. Inner sleeve; 35. Connecting block;

[0059] 4. a first elastic member;

[0060] 5. A second elastic member;

[0061] 6. Outer sleeve. DETAILED DESCRIPTION

[0062] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0063] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0064] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0066] Embodiment 1:

[0067] The embodiment provides an ultrasonic knife, such as Figure 1 As shown, the ultrasonic scalpel includes a handle shell 1, a clamp assembly 2, a drive assembly 3 and a variable force assembly; the clamp assembly 2 includes a blade head 22 and a swing clamp, the swing clamp can rotate relative to the blade head 22, and the opening and closing states of the swing clamp and the blade head 22 include a fully open state, a fully closed state, and a semi-closed state when the swing clamp and the blade head 22 are in close contact; the drive assembly 3 includes a trigger 31 and a transmission unit, the trigger 31 is movably arranged on the handle shell 1, and the trigger 31 drives the swing clamp to rotate through the transmission unit; the variable force assembly is arranged inside the handle shell 1, and the variable force assembly is used to provide a variable force to the drive assembly 3 between the fully open state and the fully closed state, and the variable force jumps at least in the semi-closed state.

[0068] A variable force component is provided to provide a variable force to the driving component 3, and the variable force jumps in the semi-closed state, thereby forming a sudden change in which the force is significantly increased or significantly decreased in the semi-closed state, that is, when the semi-closed state is reached from the fully open state, the force is significantly increased; when the semi-closed state is reached from the fully closed state, the force is significantly decreased. This force is transmitted to the user through the driving component 3, thereby enabling the user to clearly perceive that the clamp assembly 2 has reached the semi-closed state, thereby facilitating the user to maintain the clamp assembly 2 in the semi-closed state.

[0069] In the specific implementation process, Figure 1 As shown, the ultrasonic knife also includes an outer sleeve 6, which is arranged at the front end of the handle shell 1. The clamp assembly 2 is installed at the end of the outer sleeve 6 away from the handle shell 1, and is used to extend into the working part, which is located in the body of the working object. The drive assembly 3 is movably arranged at the rear end of the handle shell 1, and the drive assembly 3 can drive the clamp assembly 2 to switch between a fully open state, a semi-closed state and a fully closed state. Among them, in the fully closed state, the angle between the swing clamp and the blade head 22 is the smallest; in the fully open state, the clamp assembly 2 is as shown in FIG. Figure 2 and Figure 3 As shown, at this time, the angle between the swing clamp and the cutter head 22 is the largest; in the semi-closed state, the clamp assembly 2 is as shown in FIG. Figure 7 and Figure 8The back end refers to the end close to the user, the front end refers to the end far away from the user, and the user refers to the operator, not the object of operation. The specific directions are as follows: Figure 1 shown.

[0070] like Figure 2 and Figure 7 As shown, the clamp assembly 2 includes a cutter head 22 fixedly connected to a waveguide rod, the waveguide rod is located in an inner sleeve 34, and a jaw 23 rotatably arranged on an outer sleeve 6, a tissue pad 21 is arranged on one side of the jaw 23 close to the cutter head 22, and the jaw 23 and the tissue pad 21 together form a swing clamp. The transmission unit includes an inner sleeve 34, the inner sleeve 34 is located in the outer sleeve 6 and extends to the handle housing 1, and is transmission-connected to the trigger 31, and one end of the inner sleeve 34 away from the handle housing 1 is connected to the jaw 23. When the inner sleeve 34 moves toward the direction close to the handle housing 1, the jaw 23 rotates toward the direction close to the cutter head 22, that is, the clamp assembly 2 changes from a fully open state to a fully closed state, and when the inner sleeve 34 moves toward the direction away from the handle housing 1, the jaw 23 rotates toward the direction away from the cutter head 22, that is, the clamp assembly 2 changes from a fully closed state to a fully open state.

[0071] like Figure 8 As shown, the semi-closed state is not necessarily a state in which the angle between the swing forceps and the cutter head 22 is equal to half of the maximum angle between the swing forceps and the cutter head 22. The semi-closed state can be a state in which the angle between the swing forceps and the cutter head 22 is equal to half of the maximum angle between the swing forceps and the cutter head 22, but it can also be a state at other angles. The semi-closed state refers to a state corresponding to when the tissue pad 21 on the jaws 23 is in a position ready to contact the cutter head 22. In the semi-closed state, the tissue pad 21 is not in contact with the cutter head 22. In the semi-closed state, the opening of the clamp assembly 2 of the ultrasonic scalpel is small, so that the clamp assembly 2 can easily enter a narrow space for operation, and when operating in this state, such as stimulating the cutter head 22, using the cutter head 22 to perform special operations such as coagulation or cutting of tissue, since the tissue pad 21 is not in contact with the cutter head 22, the tissue pad 21 will not be worn due to the stimulation of the cutter head 22, which is conducive to extending the service life of the clamp assembly 2. The above-mentioned design of the present application enables the user to better control the clamp assembly 2 in a semi-closed state, thereby enabling the user to better achieve more precise operations by semi-closing the clamp assembly 2 during surgery in a narrow operating space within the subject's body (the space where the operating area is located is narrow), thereby improving the applicability of the ultrasonic scalpel for surgery in a narrow space and reducing the risk of tissue damage during the operation.

[0072] Furthermore, the angle between the jaws 23 and the cutter head 22 in the semi-closed state is not less than the angle when the jaws 23 and the cutter head 22 are just in contact.

[0073] In one embodiment, the variable force component includes an elastic member and / or a damping member; wherein the elastic member includes at least one of a compression spring, a tension spring, a torsion spring, and a leaf spring; and the damping member includes a damper. The variable force component can adopt different structural types, which is conducive to the designer to flexibly select according to the existing structural layout of different ultrasonic scalpels, which can greatly reduce the design difficulty and significantly improve the versatility of this design.

[0074] In one embodiment, if Figure 1 , Figure 4 and Fig. 9 As shown, the variable force assembly includes a first elastic member 4 and a second elastic member 5. The first elastic member 4 is arranged inside the handle housing 1, and the first elastic member 4 provides a first force to the drive assembly 3 between a fully open state and a fully closed state; the second elastic member 5 is arranged inside the handle housing 1, and the second elastic member 5 provides a second force to the drive assembly 3 between a semi-closed state and a fully closed state, so that the drive assembly 3 is simultaneously subjected to the first force and the second force when driving the swing pliers to move between the semi-closed state and the fully closed state.

[0075] Firstly, by setting a first elastic member 4, and the first elastic member 4 provides the driving component 3 with a first force having a movement tendency along the fully open state between the fully open state and the fully closed state, when the user does not press the driving component 3, the driving component 3 is subjected to the first force generated by the first elastic member 4, thereby keeping the clamping component 2 in the fully open state. When the user presses the driving component 3, the driving component 3 can overcome the first force and can drive the clamping component 2 to reach the semi-closed state and the fully closed state in turn, thereby realizing the state adjustment of the clamping component 2; secondly, by setting a second elastic member 5, and the second elastic member 5 provides the driving component 3 with a first force having a movement tendency along the fully open state between the semi-closed state and the fully closed state. The second force of the movement trend of the fully open state, when the user presses the driving component 3 and makes the clamp component 2 reach the semi-closed state, the force acting on the driving component 3 along the movement trend of the fully open state is the sum of the first force and the second force, and this force is significantly greater than the first force, that is, a sudden change of significantly increased or significantly decreased force is formed in the semi-closed state, that is, when reaching the semi-closed state from the fully open state, the force increases significantly; when reaching the semi-closed state from the fully closed state, the force decreases significantly, and this force is transmitted to the user through the driving component 3, so that the user can clearly feel that the clamp component 2 has reached the semi-closed state, which is beneficial for the user to maintain the clamp component 2 in the semi-closed state.

[0076] In one embodiment, if Figure 1 , Figure 2 , Figure 4 , Figure 7 and Fig. 9As shown, the transmission unit includes a connecting rod 33, a driving block 32, a connecting block 35 and an inner sleeve 34 connected in sequence, one end of the inner sleeve 34 is connected to the swing pliers, the other end of the inner sleeve 34 is connected to the driving block 32 through the connecting block 35, the driving block 32 is slidably connected to the handle housing 1, the trigger 31 is connected to the driving block 32 through the connecting rod 33, and the trigger 31 can drive the connecting rod 33, the driving block 32, the connecting block 35 and the inner sleeve 34 to move. The first elastic member 4 acts on any one of the trigger 31, the connecting rod 33, the driving block 32, the connecting block 35 and the inner sleeve 34; the second elastic member 5 acts on any one of the trigger 31, the connecting rod 33, the driving block 32, the connecting block 35 and the inner sleeve 34.

[0077] The first elastic member 4 and the second elastic member 5 can act on any one of the connection structures between the trigger 31 and the swing forceps, which is beneficial for designers to flexibly design according to the existing structural layout of different ultrasonic knives, can greatly reduce the design difficulty, and can significantly improve the versatility of this design.

[0078] In the specific implementation process, Figure 4 and Fig. 9 As shown, the trigger 31 is rotatably arranged on the handle housing 1, and the driving block 32 is slidably arranged inside the handle housing 1. One end of the driving block 32 is connected to the inner sleeve 34 through the connecting block 35, and the other end of the driving block 32 is connected to the trigger 31 through the connecting rod 33, thereby realizing the transmission connection between the trigger 31 and the clamp claw 23. The trigger 31 can drive the driving block 32 to slide along the length direction of the outer sleeve 6, and then drive the inner sleeve 34 to slide relative to the outer sleeve 6 along the length direction of the outer sleeve 6, thereby driving the clamp claw 23 to rotate, thereby realizing the state change of the clamp assembly 2.

[0079] By setting a trigger 31 rotatably arranged on the handle housing 1, and setting a linearly slidable driving block 32, a connecting block 35, and an inner sleeve 34 connecting the trigger 31 and the clamp assembly 2, the user's external force can be transmitted to the clamp assembly 2 with a relatively simple and reliable structure, thereby realizing effective control of the opening and clamping actions of the clamp assembly 2.

[0080] In the specific implementation process, the first elastic member 4 can be designed at different positions. For example, the first elastic member 4 acts on the front end or rear end or the upper end or the lower end or the left end or the right end of the trigger 31; for another example, the first elastic member 4 acts on the front end or rear end or the upper end or the lower end or the left end or the right end of the connecting rod 33; for another example, the first elastic member 4 acts on the front end or rear end or the upper end or the lower end or the left end or the right end of the driving block 32; for another example, the first elastic member 4 acts on the front end or rear end or the upper end or the lower end or the left end or the right end of the connecting block 35; for another example, the first elastic member 4 acts on the front end or rear end or the upper end or the lower end or the left end or the right end of the inner sleeve 34.

[0081] In the specific implementation process, the second elastic member 5 can be designed at different positions. For example, the second elastic member 5 acts on the front end or rear end or the upper end or the lower end or the left end or the right end of the trigger 31; for another example, the second elastic member 5 acts on the front end or rear end or the upper end or the lower end or the left end or the right end of the connecting rod 33; for another example, the second elastic member 5 acts on the front end or rear end or the upper end or the lower end or the left end or the right end of the driving block 32; for another example, the second elastic member 5 acts on the front end or rear end or the upper end or the lower end or the left end or the right end of the connecting block 35; for another example, the second elastic member 5 acts on the front end or rear end or the upper end or the lower end or the left end or the right end of the inner sleeve 34.

[0082] In one embodiment, the driving block 32 is L-shaped, and includes a horizontal portion and a vertical portion, the vertical portion is connected to the connecting block 35, and the horizontal portion is connected to the trigger 31. Further, the first elastic member 4 acts on the horizontal portion or the vertical portion; the second elastic member 5 acts on the horizontal portion or the vertical portion.

[0083] In one embodiment, the first elastic member 4 is any one of a compression spring, a tension spring, a torsion spring, and a leaf spring; the second elastic member 5 is any one of a compression spring, a tension spring, a torsion spring, and a leaf spring. The first elastic member 4 and the second elastic member 5 adopt different structural types, which is conducive to the designer to make flexible choices according to the existing structural layout of different ultrasonic scalpels, which can greatly reduce the design difficulty and significantly improve the versatility of this design.

[0084] In one embodiment, the first elastic member 4 and the second elastic member 5 are nested. By arranging the first elastic member 4 and the second elastic member 5 nested inside and outside, the overall structure can be made more compact, which is conducive to the miniaturization of the ultrasonic knife. For example, in one embodiment, the first elastic member 4 is sleeved on the outer periphery of the second elastic member 5, and the rear end of the first elastic member 4 and the rear end of the second elastic member 5 are respectively abutted against the handle housing 1. In the fully-opened state, the front end of the second elastic member 5 is hidden in the first elastic member 4, and the front end of the first elastic member 4 is abutted against the drive assembly 3. For another example, in another embodiment, the second elastic member 5 is sleeved on the outer periphery of the first elastic member 4, and the rear end of the first elastic member 4 and the rear end of the second elastic member 5 are respectively abutted against the handle housing 1. In the fully-opened state, the front end of the first elastic member 4 extends beyond the front end of the second elastic member 5, and the front end of the first elastic member 4 is abutted against the drive assembly 3. For example, in another embodiment, the first elastic member 4 is sleeved on the outer periphery of the second elastic member 5, and the front end of the first elastic member 4 and the front end of the second elastic member 5 are respectively in contact with the drive assembly 3. In the fully-opened state, the rear end of the second elastic member 5 is hidden in the first elastic member 4, and the rear end of the first elastic member 4 is in contact with the handle housing 1. For example, in another embodiment, the second elastic member 5 is sleeved on the outer periphery of the first elastic member 4, and the front end of the first elastic member 4 and the front end of the second elastic member 5 are respectively in contact with the drive assembly 3. In the fully-opened state, the rear end of the first elastic member 4 extends beyond the rear end of the second elastic member 5, and the rear end of the first elastic member 4 is in contact with the handle housing 1.

[0085] In a specific implementation, the rear end of the first elastic member 4 is flush with the rear end of the second elastic member 5, and the length of the first elastic member 4 is greater than the length of the second elastic member 5. Alternatively, the front end of the first elastic member 4 is flush with the front end of the second elastic member 5, and the length of the first elastic member 4 is greater than the length of the second elastic member 5. Further, the length of the first elastic member 4 is equal to twice the length of the second elastic member 5.

[0086] In one embodiment, one end of the second elastic member 5 abuts against the handle housing 1, and in the fully opened state, as shown in FIG. Figure 4 As shown, the other end of the second elastic member 5 is not in contact with the driving assembly 3, between the semi-closed state and the fully closed state, as shown in FIG. Fig. 9 As shown, the other end of the second elastic member 5 abuts against the driving assembly 3 and provides a second force to the driving assembly 3 .

[0087] By making the first elastic member 4 and the second elastic member 5 abut against the driving assembly 3 at different motion nodes, and thus providing different forces to the driving assembly 3 at different motion nodes, this method of achieving variable forces is simple, low-cost and highly reliable.

[0088] In one embodiment, in the fully open state, the other end of the second elastic member 5 is connected to the handle housing 1, and the second elastic member 5 is in a pre-deformed state. By making the second elastic member 5 in the pre-deformed state, the initial value of the second force provided by the second elastic member 5 to the drive assembly 3 can be made larger, thereby making the jump of the variable force more obvious, which is conducive to the user being able to more clearly perceive that the clamp assembly 2 has reached the semi-closed state.

[0089] In one embodiment, the stiffness of the second elastic member 5 is greater than the stiffness of the first elastic member 4. By designing the stiffness of the second elastic member 5 to be greater than the stiffness of the first elastic member 4, it is possible to ensure that in the semi-closed state, the force applied to the drive assembly 3 undergoes a significant sudden change, so that the user can more accurately judge the state of the clamp assembly 2.

[0090] In one embodiment, the stiffness of the second elastic member 5 is more than twice the stiffness of the first elastic member 4 .

[0091] In one embodiment, the ultrasonic scalpel further includes a prompt device, which is triggered in the semi-closed state. By providing the prompt device, the user can be informed of the current state of the clamp assembly more clearly and reliably, further reducing the probability of the user misjudging the state.

[0092] Further, in one embodiment, the prompt device is an audio device, a display device, or a tactile device. When the audio device is triggered, it can emit a prompt sound, such as a buzzer or a ticking sound of mechanical abutment; when the display device is triggered, it can emit a flashing light; when the tactile device is triggered, it can provide tactile feedback, such as vibration.

[0093] In one embodiment, if Figure 4 and Fig. 9 As shown, the first elastic member 4 is a compression spring, one end of the first elastic member 4 abuts against the handle housing 1, and the other end of the first elastic member 4 abuts against the drive block 32; the second elastic member 5 is a torsion spring, and a crimping portion 311 is provided in the middle of the trigger 31. In the fully open state, the other end of the second elastic member 5 has no contact with the crimping portion 311, and between the semi-closed state and the fully closed state, the other end of the second elastic member 5 abuts against the crimping portion 311 and provides a second force to the crimping portion 311.

[0094] By configuring the first elastic member 4 to be connected to the drive block 32 and configuring the second elastic member 5 to be connected to the crimping portion 311 of the trigger 31, the first elastic member 4 and the second elastic member 5 can be dispersedly distributed, thereby avoiding the problem of increased difficulty in structural design due to the concentrated distribution of the first elastic member 4 and the second elastic member 5, and also reducing the overall difficulty of assembling the first elastic member 4 and the second elastic member 5.

[0095] In one embodiment, if Figure 4 and Fig. 9 As shown, the driving block 32 is arranged at the upper end of the handle housing 1, the front end of the driving block 32 is connected to the clamp assembly 2 through the connecting block 35 and the inner sleeve 34, and the rear end of the driving block 32 is connected to the first elastic member 4. The first elastic member 4 can drive the driving block 32 to move in the direction of the clamp assembly 2, and the trigger 31 is located below the driving block 32. The upper end of the trigger 31 is rotatably connected to the handle housing 1, the middle part of the trigger 31 is rotatably connected to the driving block 32, and the lower end of the trigger 31 extends to the outside of the handle housing 1 for the user to perform a pressing operation.

[0096] By configuring the first elastic member 4 to be connected to the drive block 32, and connecting the drive block 32 to the middle of the trigger 31, so that the trigger 31 forms a lever, the user can overcome the first force with a smaller applied force to drive the clamp assembly 2 to clamp, thereby making the user easier and more labor-saving during operation.

[0097] In one embodiment, if Figure 4 and Fig. 9 As shown, the middle part of the trigger 31 is connected to the driving block 32 through a connecting rod 33, and the middle part of the trigger 31, the connecting rod 33 and the driving block 32 form a crank slider structure as a whole, thereby ensuring the reliable movement of the driving block 32. Further, the middle part of the trigger 31 is connected to the rear end of the driving block 32 through the connecting rod 33.

[0098] Furthermore, in one embodiment, one end of the first elastic member 4 abuts against the rear end of the driving block 32, and the other end of the first elastic member 4 abuts against the handle housing 1. When the user presses the trigger 31, the driving block 32 moves to the rear end and compresses the first elastic member 4. When the user releases the trigger 31, the first elastic member 4 stretches and resets to push the driving block 32 to move to the front end. Furthermore, a first accommodating groove is provided inside the handle housing 1, and the first elastic member 4 is provided in the first accommodating groove. The front end of the first elastic member 4 extends out of the first accommodating groove and abuts against the end face of the rear end of the driving block 32.

[0099] Of course, in another embodiment, the first elastic member 4 is a compression spring, one end of the first elastic member 4 abuts against the front end of the driving block 32, and the other end of the first elastic member 4 abuts against the handle housing 1. When the user presses the trigger 31, the driving block 32 moves to the rear end and compresses the first elastic member 4. When the user releases the trigger 31, the first elastic member 4 stretches and resets to push the driving block 32 to move to the front end. Further, a second blocking block is provided at the front end of the driving block 32, a second accommodating groove is provided inside the handle housing 1, and the first elastic member 4 is provided in the second accommodating groove, and the front end of the first elastic member 4 extends out of the second accommodating groove and abuts against the second blocking block of the driving block 32.

[0100] Of course, in another embodiment, the first elastic member 4 is a tension spring, one end of the first elastic member 4 is connected to the rear end of the driving block 32, and the other end of the first elastic member 4 is connected to the handle housing 1. When the user presses the trigger 31, the driving block 32 moves toward the rear end and stretches the first elastic member 4. When the user releases the trigger 31, the first elastic member 4 retracts and resets to push the driving block 32 to move toward the front end.

[0101] Furthermore, in another embodiment, the first elastic member 4 is a tension spring, one end of the first elastic member 4 is connected to the front end of the driving block 32, and the other end of the first elastic member 4 is connected to the handle housing 1. When the user presses the trigger 31, the driving block 32 moves toward the rear end and stretches the first elastic member 4. When the user releases the trigger 31, the first elastic member 4 retracts and resets to push the driving block 32 to move toward the front end.

[0102] Furthermore, in another embodiment, it can also be designed as follows: the first elastic member 4 is a torsion spring, a first blocking block is provided at the upper end of the trigger 31, a mounting shaft 13 is provided in the handle housing 1, the trigger 31 is rotatably connected to the handle housing 1 through the mounting shaft 13, the first elastic member 4 is sleeved on the mounting shaft 13, the first end of the first elastic member 4 abuts against the handle housing 1, and the second end of the first elastic member 4 abuts against the first blocking block.

[0103] By sleeved the first elastic member on the mounting shaft 13 and providing a first blocking block on the trigger 31 that can abut against the first elastic member, the positioning function of the mounting shaft 13 can be fully utilized, so that the connection structure between the trigger 31 and the handle shell 1 and the connection structure between the first elastic member and the handle shell 1 are compounded, thereby making the overall structure more compact and facilitating the miniaturization of the ultrasonic knife.

[0104] Of course, in other embodiments, the first elastic member 4 can also be connected to the middle of the driving block 32, and the connection method is similar to the above methods. Further, the connection method of the first elastic member and the connecting rod 33, the connecting block 35, and the inner sleeve 34 can also refer to the above methods, which will not be listed here one by one.

[0105] In one embodiment, if Figure 4 and Fig. 9 As shown, a crimping portion 311 is provided in the middle portion of the trigger 31, and the second elastic member 5 is located on the side of the crimping portion 311 away from the clamp assembly 2, and one end of the second elastic member 5 abuts against the handle housing 1. In the fully open state, the other end of the second elastic member 5 has no contact with the crimping portion 311. In the semi-closed state to the fully closed state, the other end of the second elastic member 5 abuts against the crimping portion 311 and provides a second force to the crimping portion 311.

[0106] By matching the second elastic member 5 with the crimping portion 311 of the trigger 31, the first elastic member 4 and the second elastic member 5 can be dispersed, thereby avoiding the problem of increased difficulty in structural design due to the concentrated distribution of the first elastic member 4 and the second elastic member 5, and also reducing the overall assembly difficulty of the first elastic member 4 and the second elastic member 5.

[0107] In one embodiment, if Fig.10 As shown, a mounting column 11 and a mounting groove 12 are provided in the handle housing 1, and the second elastic member 5 is sleeved on the mounting column 11, the first end of the second elastic member 5 is embedded in the mounting groove 12, and the second end of the second elastic member 5 is suspended, and in the semi-closed state to the fully closed state, the crimping portion 311 abuts against the second end of the second elastic member 5.

[0108] Of course, in other embodiments, the second elastic member 5 may also be a compression spring. Further, a third accommodating groove is provided in the handle housing 1, the first end of the second elastic member 5 is inserted into the third accommodating groove, the second end of the second elastic member 5 extends out of the third accommodating groove and is suspended in the air, and in the semi-closed state to the fully closed state, the crimping portion 311 abuts against the second end of the second elastic member 5. In other embodiments, the second spring may also be a tension spring or a leaf spring.

[0109] Of course, in another embodiment, it can also be designed as follows: the second elastic member 5 is a torsion spring, a first blocking block is provided at the upper end of the trigger 31, a mounting shaft 13 is provided in the handle housing 1, the trigger 31 is rotatably connected to the handle housing 1 through the mounting shaft 13, the second elastic member 5 is sleeved on the mounting shaft 13, the first end of the second elastic member 5 abuts against the handle housing 1, and the second end of the second elastic member 5 is suspended, and in the semi-closed state to the fully closed state, the first blocking block abuts against the second end of the second elastic member 5.

[0110] By sleeved the second elastic member 5 on the mounting shaft 13 and providing a first blocking block on the trigger 31 that can abut against the second elastic member 5, the positioning function of the mounting shaft 13 can be fully utilized, so that the connection structure between the trigger 31 and the handle shell 1 and the connection structure between the second elastic member 5 and the handle shell 1 are compounded, thereby making the overall structure more compact, which is conducive to the miniaturization of the ultrasonic knife.

[0111] In one embodiment, if Figure 4 , Figure 5 , Fig. 9 and Fig.10As shown, the trigger 31 includes a central portion 312, a mounting portion 313, a connecting portion 314 and an operating portion 315. The mounting portion 313 is arranged above the front end of the central portion 312, and one end of the mounting portion 313 away from the central portion 312 is rotatably connected to the handle housing 1. The connecting portion 314 is arranged above the rear end of the central portion 312, and one end of the connecting portion 314 away from the central portion 312 is rotatably connected to the driving block 32. The operating portion 315 is arranged below the front end of the central portion 312 and exposed to the outside of the handle housing 1 for the user to perform a pressing operation. The crimping portion 311 is arranged below the rear end of the central portion 312, and one end of the crimping portion 311 away from the central portion is used to abut against the second elastic member 5.

[0112] By setting the hinge point between the trigger 31 and the handle housing 1 at the upper end, and setting the crimping portion 311 below the center portion 312, and using the lower end of the crimping portion 311 to abut against the second elastic member 5, the point of action of the second elastic member 5 and the trigger 31 can be moved away from the hinge point between the trigger 31 and the handle housing 1, thereby increasing the length of the lever arm of the second elastic member 5 acting on the trigger 31, so that when the second elastic member 5 remains unchanged, the force provided by the second elastic member 5 to the operating portion 315 can be increased, allowing the user to more clearly perceive the semi-closed state.

[0113] Of course, in another embodiment, it can also be designed as follows: the variable force component includes a controllable gas spring, and the controllable gas spring provides a sudden change in force at a telescopic position corresponding to the semi-closed state.

[0114] Embodiment 2:

[0115] An embodiment provides an ultrasonic scalpel, which includes a handle shell 1, a clamp assembly 2, a drive assembly 3 and a warning assembly. The clamp assembly 2 includes a blade head 22 and a swinging clamp. The swinging clamp can rotate relative to the blade head 22, and the opening and closing states of the swinging clamp and the blade head 22 include a fully open state, a fully closed state, and a semi-closed state; the drive assembly 3 includes a trigger 31 and a transmission unit. The trigger 31 is arranged on the handle shell 1, and the trigger 31 drives the swinging clamp to rotate through the transmission unit; the warning assembly is used to provide prompt information including at least one of a vibration signal, a sound signal, and a light signal at least in the semi-closed state.

[0116] By providing prompt information in the semi-closed state by the warning component, the user can clearly perceive that the clamp assembly 2 has reached the semi-closed state, which is conducive to the user maintaining the clamp assembly 2 in the semi-closed state.

[0117] In one embodiment, the warning component includes a force sensor and / or a displacement sensor, and the force sensor and / or the displacement sensor are used to sense force information and / or displacement information in at least a semi-closed state, thereby utilizing the force information and / or the displacement information to control the warning component to output the prompt information.

[0118] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An ultrasonic scalpel, characterized in that: include: Handle housing; A clamp assembly, the clamp assembly comprising a cutter head and a swing clamp, the swing clamp can rotate relative to the cutter head, and the opening and closing states of the swing clamp and the cutter head include a fully open state, a fully closed state, and a semi-closed state; A driving assembly, the driving assembly comprising a trigger and a transmission unit, the trigger being arranged on the handle housing, and the trigger driving the swing pliers to rotate through the transmission unit; A variable force component is used to provide a variable force to the drive component between the fully open state and the fully closed state, and the variable force jumps at least in the semi-closed state.

2. The ultrasonic scalpel according to claim 1, characterized in that: The variable force component includes an elastic member and / or a damping member; wherein the elastic member includes at least one of a compression spring, a tension spring, a torsion spring, and a leaf spring; and the damping member includes a damper.

3. The ultrasonic scalpel according to claim 2, characterized in that: The variable force component comprises: a first elastic member, disposed inside the handle housing, the first elastic member providing a first force to the drive assembly between the fully open state and the fully closed state; A second elastic member is arranged inside the handle housing, and the second elastic member provides a second force to the drive assembly between the semi-closed state and the fully closed state, so that when the drive assembly drives the swing pliers to move between the semi-closed state and the fully closed state, it is simultaneously subjected to the first force and the second force.

4. The ultrasonic scalpel according to claim 3, characterized in that: The transmission unit comprises a connecting rod, a driving block, a connecting block and an inner sleeve connected in sequence, one end of the inner sleeve is connected to the swing pliers, the other end of the inner sleeve is connected to the driving block through the connecting block, the driving block is slidably connected to the handle housing, the trigger is connected to the driving block through the connecting rod, and the trigger can drive the connecting rod, the driving block, the connecting block and the inner sleeve to move; The first elastic member acts on any one of the trigger, the connecting rod, the driving block, the connecting block and the inner sleeve; the second elastic member acts on any one of the trigger, the connecting rod, the driving block, the connecting block and the inner sleeve.

5. The ultrasonic scalpel according to claim 3, characterized in that: The first elastic member and the second elastic member are nested.

6. The ultrasonic scalpel according to claim 3, characterized in that: One end of the second elastic member abuts against the handle housing. In the fully open state, the other end of the second elastic member has no contact with the drive assembly. Between the semi-closed state and the fully closed state, the other end of the second elastic member abuts against the drive assembly and provides the second force to the drive assembly.

7. The ultrasonic scalpel according to claim 6, characterized in that: In the fully opened state, the other end of the second elastic member is connected to the handle housing, and the second elastic member is in a pre-deformed state.

8. The ultrasonic scalpel according to claim 6, characterized in that: The rigidity of the second elastic member is greater than the rigidity of the first elastic member.

9. The ultrasonic scalpel according to claim 6, characterized in that: The first elastic member is a compression spring, one end of the first elastic member abuts against the handle housing, and the other end of the first elastic member abuts against the transmission unit; The second elastic member is a torsion spring, and the trigger is provided with a crimping portion. In the fully open state, the other end of the second elastic member has no contact with the crimping portion, and between the semi-closed state and the fully closed state, the other end of the second elastic member abuts against the crimping portion and provides the second force to the crimping portion.

10. The ultrasonic scalpel according to claim 1, characterized in that: The variable force assembly includes a controllable gas spring, which provides a sudden change in force at a telescopic position corresponding to the semi-closed state.

11. The ultrasonic scalpel according to any one of claims 1 to 10, characterized in that: The ultrasonic scalpel further comprises a prompt device, and the prompt device is triggered in the semi-closed state.

12. An ultrasonic scalpel, characterized in that: include: Handle housing; A clamp assembly, the clamp assembly comprising a cutter head and a swing clamp, the swing clamp can rotate relative to the cutter head, and the opening and closing states of the swing clamp and the cutter head include a fully open state, a fully closed state, and a semi-closed state; A driving assembly, the driving assembly comprising a trigger and a transmission unit, the trigger being arranged on the handle housing, and the trigger driving the swing pliers to rotate through the transmission unit; The warning component is used to provide prompt information including at least one of a vibration signal, a sound signal, and a light signal at least in the semi-closed state.

13. The ultrasonic scalpel according to claim 12, characterized in that: The warning component includes a force sensor and / or a displacement sensor, and the force sensor and / or the displacement sensor are used to sense force information and / or displacement information in at least the semi-closed state, so as to use the force information and / or the displacement information to control the warning component to output the prompt information.

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