An ultrasonic surgical instrument including a handle assembly and a jaw articulatable ultrasonic blade

Abstract

The present application belongs to the technical field of medical equipment, and particularly relates to an ultrasonic knife clamp head assembly and a clamp head bendable ultrasonic knife. The present application aims at the problem that the existing technology needs to transmit energy through an ultrasonic knife rod to make the clamp head difficult to bend because the transducer is set at the rear part of the ultrasonic knife, and provides a clamp head bendable ultrasonic knife which includes the transducer concentrated in the clamp head assembly, and the specific integration mode is that the amplitude rod and the ultrasonic knife are fixedly connected, and the clamp head bendable ultrasonic knife further includes a conductive assembly and a mounting base. The mounting base is matched with the transducer fixed shell to extrude the piezoelectric ceramic to be attached to the amplitude rod and to make the conductive assembly attached to the positive and negative electrodes of the piezoelectric ceramic. Such design makes the handle part at the rear part of the ultrasonic knife not affect the ultrasonic knife part when the handle part controls the overall rotation of the clamp head assembly. Meanwhile, the sliding sleeve is arranged outside the ultrasonic assembly to solve the interference of the ultrasonic assembly to the transmission of the traction part, and the control of the handle part at the rear part of the ultrasonic knife on the clamp head is realized.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and particularly relates to an ultrasonic scalpel forceps head assembly and a flexible ultrasonic scalpel head. Background Technology

[0002] Traditional ultrasonic scalpel handles typically feature a large transducer in the handle section. Ultrasonic energy is converted into vibrations in a waveguide (the ultrasonic scalpel) that extends from the clamp head. The size of the waveguide dictates that it must be housed within a large enclosure, requiring an amplitude transformer to convert the ultrasonic waves into vibrations and transmit the energy to the clamp head via the relatively long waveguide. Generally, waveguides cannot be bent, so the clamp head of an ultrasonic scalpel is typically non-bendable, significantly limiting the surgical range.

[0003] For example, a Chinese invention patent application [Application No.: CN202111075013.1] discloses a phase-locked loop method and an ultrasonic scalpel system. The ultrasonic scalpel system includes a connected ultrasonic scalpel, a transducer, and a generator. The method includes the following steps: the generator generates an initial current signal and sends it to the transducer as the current operating signal for the ultrasonic scalpel; the voltage and current values ​​of the main circuit in the equivalent circuit of the ultrasonic scalpel are measured; the effective voltage and current values, and the voltage-current phase difference of the main circuit are calculated; the voltage and current values, and the voltage-current phase difference of the second branch are calculated; the generator is controlled to generate a current signal at a new frequency as the current operating signal for the ultrasonic scalpel, which is sent to the transducer to drive the ultrasonic scalpel to operate, and this process is repeated cyclically. Compared to traditional ultrasonic equipment that requires a matching tuning inductor based on the system's required frequency, the phase-locked loop method of this invention... The solution provided by this invention does not require limitation on the ultrasonic frequency and has good versatility, but it still does not solve the problem that the pliers head cannot be bent. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing an ultrasonic scalpel forceps assembly and a flexible ultrasonic scalpel forceps.

[0005] The present invention provides an ultrasonic scalpel forceps assembly for rotation, comprising an ultrasonic component, a forceps head, and a drive component. The ultrasonic component includes a transducer, a transducer housing, and an ultrasonic scalpel fixed to one end of the transducer. The drive component includes a traction component and a sliding sleeve located outside the transducer housing. The forceps head is hinged to one end of the transducer housing, and the ultrasonic scalpel extends out of the transducer housing near the forceps head. One end of the sliding sleeve is connected to the forceps head, and the traction component pulls the forceps head relative to the ultrasonic scalpel through the traction sliding sleeve to rotate the forceps head relative to the ultrasonic scalpel.

[0006] Preferably, the transducer includes a piezoelectric ceramic and an amplitude transformer, the amplitude transformer and the ultrasonic scalpel are fixedly connected, and it also includes a conductive component and a mounting base. The mounting base cooperates with the transducer fixing housing to press the piezoelectric ceramic to attach to the amplitude transformer and to attach the conductive component to the positive and negative electrodes of the piezoelectric ceramic.

[0007] Preferably, it also includes a sealing ring disposed outside the amplitude transformer near the ultrasonic scalpel, the outer periphery of which is pressed against the inner wall of the transducer fixing housing.

[0008] Preferably, the amplitude transformer includes a middle section, the two ends of which are connected to the input end and the output end, respectively. Both the input end and the output end are cylindrical, and the surface of the middle section is arc-shaped with the two ends of the arc tangent to the cylindrical surfaces of the input end and the output end, respectively.

[0009] Preferably, the radius of the arc in the middle section is: R arc = L 2 / (8H) + H / 2; Among them, R arc Where H is the radius of the arc, H is the bow height, and L is the resonant length of the amplitude transformer. The resonant length L of the amplitude transformer is calculated using the following formula:

[0010] Where L2 is the length of the output end, L3 is the length of the middle section, S2 is the cross-sectional area of ​​the larger end of the middle section, S3 is the cross-sectional area of ​​the smaller end of the middle section, k=ω / c, c is the longitudinal wave velocity in the amplitude transformer, and ω is the angular frequency.

[0011] Preferably, the traction assembly includes a traction housing and a traction plate located within the traction housing with restricted displacement, wherein both ends of the traction plate extend out of the traction housing and a sliding sleeve is connected to one end of the traction plate.

[0012] Preferably, the traction plate is provided with a sliding groove; it also includes a positioning pin fixed on the traction housing, the positioning pin passing through the sliding groove.

[0013] Preferably, the sliding sleeve is provided with a drive groove, and the pliers head is provided with a drive protrusion, the drive protrusion being embedded in the drive groove.

[0014] This invention provides a flexible ultrasonic scalpel head assembly, which allows for bending of the aforementioned ultrasonic scalpel head assembly. In addition to the aforementioned structure, it also includes a handle, a sleeve, and a force transmission mechanism. The force transmission mechanism is located within the sleeve, and the handle rotates and bends the head by manipulating the force transmission mechanism. The ultrasonic scalpel head assembly is hinged to the sleeve via a traction housing.

[0015] Furthermore, the force transmission mechanism includes a rotating connecting rod, a rotating pull rod assembly, and a clamping pull rod assembly. The handle portion includes a mounting housing assembly, a grip fixed to the handle housing, a rotating trigger hinged within the handle housing, and a clamping trigger. The rotating trigger rotates and pulls the rotating pull rod assembly, which in turn pulls the rotating connecting rod to pull the traction housing, causing the ultrasonic scalpel pliers assembly to rotate as a whole. One end of the clamping pull rod assembly is connected to a traction plate. The clamping trigger controls the rotation of the pliers head by pulling the clamping pull rod assembly.

[0016] Preferably, a positioning lock is provided below the rotating trigger to limit the rotating trigger and fix the bent state.

[0017] Compared with existing technologies, the advantages of this invention are: 1. This invention miniaturizes the ultrasonic component and concentrates it in the clamp head, ensuring that the handle at the rear of the ultrasonic scalpel controls the rotation of the clamp head assembly without affecting the ultrasonic scalpel components. Simultaneously, by incorporating a sliding sleeve outside the ultrasonic component, interference from the ultrasonic component to the force transmission of the traction components is resolved, thus enabling the handle at the rear of the ultrasonic scalpel to control the clamp head.

[0018] 2. The middle section of the amplitude transformer of this invention adopts a unique arc-shaped structure, which makes the stress distribution on the amplitude transformer tend to be uniform, thereby increasing the maximum vibration speed at the output end. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the pliers head assembly of the present invention; Figure 2 This is an exploded view of the pliers head assembly of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention; Figure 4 This is a top view of the present invention; Figure 5 for Figure 4 A cross-sectional view along the AA direction; Figure 6 This is an exploded view of the present invention; Figure 7 This is a schematic diagram of the structure of the amplitude transformer of the present invention; Figure 8 This is a stress distribution cloud diagram of the amplitude transformer of the present invention; In the diagram: Ultrasonic component 1, clamp head 2, drive component 3, transducer 11, transducer fixing housing 12, ultrasonic scalpel 13, mounting base 14, traction component 31, sliding sleeve 32, piezoelectric ceramic 111, amplitude transformer 112, middle section 113, input end 114, output end 115, conductive component 4, sealing ring 15, traction housing 311, traction plate 312, positioning pin 313, drive slot 321, drive protrusion 21, handle part 5, sleeve 6, force transmission mechanism 7, rotating connecting rod 71, rotating pull rod assembly 72, clamping pull rod assembly 73, mounting housing assembly 51, grip 52, rotating trigger 53, clamping trigger 54, positioning lock 55, sliding slot 3121. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] This invention includes an ultrasonic forceps head for miniaturizing ultrasonic components 1, such as... Figure 1-2 As shown, the device includes an ultrasonic component 1, a clamp head 2, and a drive component 3. The ultrasonic component 1 includes a transducer 11, a transducer housing 12, and an ultrasonic scalpel 13 fixed to one end of the transducer 11. The drive component 3 includes a traction component 31 and a sliding sleeve 32 located outside the transducer housing 12. The clamp head 2 is hinged to one end of the transducer housing 12, and the ultrasonic scalpel 13 extends out of the transducer housing 12 near the clamp head 2. One end of the sliding sleeve 32 is connected to the clamp head 2, and the traction component 31 pulls the clamp head 2 relative to the ultrasonic scalpel 13 to rotate through the traction sliding sleeve 32.

[0022] Furthermore, such as Figure 2 As shown, the transducer 11 includes a piezoelectric ceramic 111 and an amplitude transformer 112. The amplitude transformer 112 is fixedly connected to the ultrasonic scalpel 13. It also includes a conductive component 4 and a mounting base 14. The mounting base 14 cooperates with the transducer fixing housing 12 to press the piezoelectric ceramic 111 to attach it to the amplitude transformer 112 and to attach the conductive component 4 to the positive and negative poles of the piezoelectric ceramic 111 for conduction.

[0023] Furthermore, such as Figure 2 As shown, it also includes a sealing ring 15 surrounding the amplitude transformer 112 on the side near the ultrasonic scalpel 13. The outer periphery of the sealing ring 15 is pressed against the inner wall of the transducer fixing housing 12. By setting the sealing ring 15, no fluid will seep into the transducer fixing housing 12 during surgery, thus preventing short circuit.

[0024] The vibration velocity of the output end 115 of the amplitude transformer 112 is directly proportional to the stress it bears. The maximum stress that the amplitude transformer 112 and its output end 115 can withstand is an intrinsic property of the material it is made of and cannot be changed through geometric design. Existing amplitude transformers typically suffer from stress concentration due to their structural design; that is, there are one or more stress concentration points on the entire amplitude transformer 112, where the local stress is much higher than in other areas. Thus, as the input power gradually increases (i.e., the vibration velocity increases), the stress at the stress concentration points reaches the material's allowable stress limit first, while the stress at the output end 115 is still far below the stress limit, making the vibration velocity achievable at the output end 115 very limited.

[0025] In response, the present invention improves the specific structure of the amplitude transformer 112, such as... Figure 7 As shown, the amplitude transformer 112 includes a middle section 113, the two ends of which are connected to the input end 114 and the output end 115 respectively. The input end 114 and the output end 115 are both cylindrical, and the surface of the middle section 113 is arc-shaped, with the two ends of the arc being tangent to the cylindrical surfaces of the input end 114 and the output end 115 respectively.

[0026] The middle section 113 of the amplitude transformer 112 of this invention adopts a unique arc-shaped structure. This design avoids the sharp corners of stepped and simple conical shapes, providing a smooth transition and making the stress distribution on the amplitude transformer 112 more uniform. The specific stress distribution is as follows: Figure 8 As shown. This allows the output terminal 115 to approach or reach the allowable stress limit of the material during actual use, thereby increasing the maximum vibration velocity.

[0027] Preferably, the radius of the arc of the middle section 113 is: R arc = L 2 / (8H) + H / 2; Among them, R arc H is the radius of the arc, H is the bow height (i.e., the depth of the concavity at the midpoint of the profile), and L is the resonant length of the amplitude transformer 112. The resonant length L of the amplitude transformer 112 is calculated using the following formula:

[0028] Where L2 is the length of the output end 115, i.e. the length of the cylindrical section of the output end 115, L3 is the length of the middle section 113, i.e. the length of the section with the arc-shaped profile, S2 is the cross-sectional area of ​​the larger end of the middle section 113, S3 is the cross-sectional area of ​​the smaller end of the middle section 113, k=ω / c, c is the longitudinal wave velocity in the amplitude transformer 112, ω is the angular frequency, which is the driving frequency of the vibration system, and its relationship with the working frequency f of the amplitude transformer 112 is ω=2πf.

[0029] Theoretically, to achieve an absolutely uniform stress distribution, the profile of the middle section 113 should follow a catenary or exponential function. However, in actual machining, approximating these ideal curves with one or more circular arcs can significantly reduce manufacturing difficulty and cost while meeting performance requirements. Therefore, this invention employs at least one arc with a radius of R. arc The arc is used as the outline of the middle section 113, thereby achieving a balance between processing cost and eliminating stress concentration.

[0030] The resonant length L refers to the physical length corresponding to one and a half wavelengths (λ / 2) of the longitudinal vibration of the amplitude transformer 112 as a whole. Ultrasonic machining / welding operations require the tool head (output end of the amplitude transformer) to achieve maximum vibration amplitude. This can only be achieved when the entire system (transducer + amplitude transformer + tool head) operates at its resonant frequency. At this time, the stress wave forms a standing wave within the transformer, forming antinodes (maximum amplitude) at the input end 114 and the output end 115, and nodes (zero amplitude) at a certain position. The calculation of the resonant length L is to accurately determine the overall dimensions of the amplitude transformer 112 so that it can resonate at a specified operating frequency (e.g., 20kHz or 35kHz), thereby efficiently amplifying and transmitting the vibration generated by the transducer to the output end 115. If the actual length deviates from the resonant length L, the amplitude transformer 112 will become detuned, leading to: 1. Amplitude drops sharply: The vibration speed at the output end does not meet the requirements.

[0031] 2. Low efficiency: A large amount of energy is reflected back to the transducer and converted into heat, causing the equipment to overheat or even be damaged.

[0032] 3. Unstable operation: unable to perform effective processing.

[0033] Therefore, precise control of the resonant length L is a prerequisite for the stable operation of the amplitude transformer 112.

[0034] Furthermore, such as Figure 2 , 5As shown, the traction assembly 31 includes a traction housing 311 and a traction plate 312 located inside the traction housing 311 with restricted displacement. The two ends of the traction plate 312 extend out of the traction housing 311 and are connected to a sliding sleeve 32 at one end. Finally, the manipulation structure behind the ultrasonic scalpel can slide through the sliding sleeve 32 via this structure, thereby rotating the clamp head 2.

[0035] Furthermore, such as Figure 2 As shown, the traction plate 312 is provided with a sliding slot 3121; it also includes a positioning pin 313 fixed on the traction housing 311, the positioning pin 313 passing through the sliding slot 3121. In this way, the range of movement of the traction plate 312 is limited, preventing the clamp head 2 from being rotated excessively.

[0036] Preferably, the sliding sleeve 32 is provided with a drive slot 321, and the clamp head 2 is provided with a drive protrusion 21, which is embedded in the drive slot 321. By pulling the sliding sleeve 32, the sliding sleeve 32 pulls the drive protrusion 21 through the drive slot 321, causing the clamp head 2 to rotate around the hinge point at one end of the transducer fixing housing 12.

[0037] Specifically, the aforementioned forceps assembly is designed for use in an ultrasonic scalpel with a flexible forceps head.

[0038] The present invention includes a flexible-headed ultrasonic scalpel, such as... Figure 4-6 As shown, the ultrasonic scalpel forceps assembly includes the aforementioned ultrasonic scalpel head assembly, as well as a handle 5, a sleeve 6, and a force transmission mechanism 7. The force transmission mechanism 7 is located inside the sleeve assembly 6. The handle 5 rotates and bends the force head 2 by manipulating the force transmission mechanism 7. The ultrasonic scalpel forceps assembly is integrally hinged to the sleeve 6 via a traction housing 311.

[0039] Specifically, such as Figure 5 , 6 As shown, the force transmission mechanism 7 includes a rotating connecting rod 71, a rotating pull rod assembly 72, and a clamping pull rod assembly 73. The handle portion 5 includes a mounting housing assembly 51, a grip 52 fixed to the mounting housing assembly 51, a rotating trigger 53 hinged within the mounting housing assembly 51, and a clamping trigger 54. The rotating trigger 53 rotates and pulls the rotating pull rod assembly 72, which in turn pulls the rotating connecting rod 71 to pull the traction housing 311, causing the ultrasonic scalpel pliers assembly to rotate as a whole. One end of the clamping pull rod assembly 73 is connected to the traction plate 312. The clamping trigger 54 controls the rotation of the pliers head 2 by pulling the clamping pull rod assembly 73 and driving the traction assembly 31. The rotating connecting rod 71 can be fixed to the rotating trigger 53 by screws or other means.

[0040] Preferred, such as Figure 3As shown, a positioning locking member 55 is provided below the rotating trigger 53 to limit the bending state of the entire caliper assembly. For example, the positioning locking member 55 can be a rack that cooperates with the rotating trigger 53. A certain force needs to be applied each time it crosses a tooth level to achieve real-time locking of the rotating trigger 53.

[0041] The working principle of this invention is as follows: Figure 1-2 As shown, the ultrasonic component 1 is miniaturized and housed within the transducer mounting housing 12, where a limiting piezoelectric ceramic 111 and its corresponding conductive component 4 are mounted in conjunction with the mounting base 14. Simultaneously, the ultrasonic scalpel 13 and the amplitude transformer 112 are also miniaturized and fixedly connected. The ultrasonic scalpel 13 protrudes from one end of the transducer mounting housing 12 to ensure normal operation. A sliding sleeve 32 is nested outside the transducer mounting housing 12, bypassing the ultrasonic component 1 to control the clamp head 2. A traction component on the side of the sliding sleeve 32 away from the clamp head 2, in conjunction with the operating component behind the ultrasonic scalpel, causes the clamp head 2 to rotate and the entire clamp head assembly to rotate. Specifically, the technical path to achieve bending of the entire clamp head assembly is as follows: The trigger 53 is pulled, causing the rotating pull rod assembly 72 to slide. The rotating pull rod assembly 72 pulls the traction housing 311 through the rotating connecting rod 71, causing the entire clamp head assembly to rotate. The technical path for rotating the forceps head 2 is as follows: The clamping trigger 54 is activated, which drives the clamping pull rod assembly 73. The clamping pull rod assembly 73 pulls the traction plate 312, which in turn drives the sliding sleeve 32. The sliding sleeve 32, through its drive slot 321, pulls the drive protrusion 21, causing the forceps head 2 to rotate around the hinge point at one end of the transducer fixing housing 12. During surgery, the forceps head assembly is inserted through the surgical opening. After bending the forceps head to the appropriate position, the positioning locking member 55 locks the bent state. First, the forceps head 2 presses the tissue against the ultrasonic scalpel 13. Then, electricity is applied to energize the piezoelectric ceramic to generate ultrasonic waves. The ultrasonic waves are converted into vibrations by the amplitude transformer 112 and transmitted to the ultrasonic scalpel 13, thereby cutting the tissue.

[0042] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0043] Although this document frequently uses terms such as ultrasonic component 1, clamp head 2, drive component 3, transducer 11, transducer mounting housing 12, ultrasonic scalpel 13, mounting base 14, traction component 31, sliding sleeve 32, piezoelectric ceramic 111, amplitude transformer 112, mid-section 113, input end 114, output end 115, conductive component 4, sealing ring 15, traction housing 311, traction plate 312, positioning pin 313, drive slot 321, drive protrusion 21, handle part 5, sleeve 6, force transmission mechanism 7, rotating connecting rod 71, rotating pull rod assembly 72, clamping pull rod assembly 73, mounting housing assembly 51, grip 52, rotating trigger 53, clamping trigger 54, positioning lock 55, and sliding slot 3121, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. An ultrasonic scalpel forceps head assembly, comprising an ultrasonic component (1), a forceps head (2), and a drive component (3), characterized in that: The ultrasonic component (1) includes a transducer (11), a transducer housing (12), and an ultrasonic scalpel (13) fixed to one end of the transducer (11). The drive component (3) includes a traction component (31) and a sliding sleeve (32) located outside the transducer housing (12). The clamp head (2) is hinged to one end of the transducer housing (12), and the ultrasonic scalpel (13) extends out of the transducer housing (12) near the clamp head (2). One end of the sliding sleeve (32) is connected to the clamp head (2), and the traction component (31) pulls the clamp head (2) relative to the ultrasonic scalpel (13) by traction of the sliding sleeve (32).

2. The ultrasonic scalpel forceps assembly as described in claim 1, characterized in that: The transducer (11) includes a piezoelectric ceramic (111) and an amplitude transformer (112). The amplitude transformer (112) and the ultrasonic scalpel (13) are fixedly connected. The transducer also includes a conductive component (4) and a mounting base (14). The mounting base (14) cooperates with the transducer mounting housing (12) to press the piezoelectric ceramic (111) to attach to the amplitude transformer (112) and to attach the conductive component (4) to the positive and negative poles of the piezoelectric ceramic (111).

3. The ultrasonic scalpel forceps assembly as described in claim 2, characterized in that: It also includes a sealing ring (15) surrounding the amplitude rod (112) on the side near the ultrasonic scalpel (13), the outer periphery of which is pressed against the inner wall of the transducer fixing housing (12).

4. The ultrasonic scalpel forceps assembly as described in claim 3, characterized in that: The amplitude rod (112) includes a middle section (113), the two ends of which are connected to the input end (114) and the output end (115) respectively. The input end (114) and the output end (115) are both cylindrical. The surface of the middle section (113) is arc-shaped, and the two ends of the arc are tangent to the cylindrical surfaces of the input end (114) and the output end (115) respectively.

5. The ultrasonic scalpel forceps assembly as described in claim 4, characterized in that: The radius of the arc of the middle section (113) is: R arc = L 2 / (8H) + H / 2; Among them, R arc H is the radius of the arc, H is the bow height, and L is the resonant length of the amplitude transformer (112). The resonant length L of the amplitude transformer (112) is calculated using the following formula: Where L2 is the length of the output end (115), L3 is the length of the middle section (113), S2 is the cross-sectional area of ​​the larger end of the middle section (113), S3 is the cross-sectional area of ​​the smaller end of the middle section (113), k=ω / c, c is the longitudinal wave velocity in the amplitude transformer (112), and ω is the angular frequency.

6. The ultrasonic scalpel forceps assembly as described in claim 1, characterized in that: The traction assembly (31) includes a traction housing (311) and a traction plate (312) located within the traction housing (311) with restricted displacement. The traction plate (312) extends out of the traction housing (311) at both ends and is connected to a sliding sleeve (32) at one end.

7. The ultrasonic scalpel forceps assembly as described in claim 6, characterized in that: The traction plate (312) is provided with a sliding slot (3121); it also includes a positioning pin (313) fixed on the traction housing (311), the positioning pin (313) passing through the sliding slot (3121).

8. The ultrasonic scalpel forceps assembly as described in claim 1, characterized in that: The sliding sleeve (32) is provided with a drive slot (321), and the pliers head (2) is provided with a drive protrusion (21), which is embedded in the drive slot (321).

9. A flexible-head ultrasonic scalpel, comprising the ultrasonic scalpel forceps assembly as described in claim 6 or 7, characterized in that: It also includes a handle (5), a sleeve (6) and a force transmission mechanism (7), the force transmission mechanism (7) being located inside the sleeve (6), the ultrasonic scalpel head assembly being hinged to the sleeve (6) via a traction housing (311), and the handle (5) causing the scalpel head (2) to rotate and bend by manipulating the force transmission mechanism (7).

10. The flexible-headed ultrasonic scalpel as described in claim 9, characterized in that: The force transmission mechanism (7) includes a rotating connecting rod (71), a rotating pull rod assembly (72), and a clamping pull rod assembly (73). The handle part (5) includes a mounting housing assembly (51), a handle (52) fixed to the mounting housing assembly (51), a rotating trigger (53) hinged in the mounting housing assembly (51), and a clamping trigger (54). The rotating trigger (53) rotates and pulls the rotating pull rod assembly (72), which in turn pulls the rotating connecting rod (71) to pull the traction housing (311), causing the ultrasonic scalpel pliers assembly to rotate as a whole. One end of the clamping pull rod assembly (73) is connected to the traction plate (312). The clamping trigger (54) controls the rotation of the pliers head (2) by pulling the clamping pull rod assembly (73). A positioning lock (55) is provided below the rotating trigger (53) to limit the rotation of the rotating trigger (53).

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