Compound motion ultrasonic bone cutter and ultrasonic handle
By designing torsion grooves and suction channels on the ultrasonic bone scalpel, combined with a liquid channel cooling chamber, the problems of low cutting efficiency and overheating are solved, achieving efficient and safe bone cutting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING PURUISHUNXIANG MEDICAL TECHNOLOGY CO LTD
- Filing Date
- 2024-12-31
- Publication Date
- 2026-06-23
AI Technical Summary
Existing ultrasonic bone cutters have low cutting efficiency and prolonged use may cause local overheating, damaging surrounding tissues.
An ultrasonic bone scalpel with a torsion groove and a suction channel was designed. Combined with the liquid channel and cooling chamber of the ultrasonic operating handle, it can achieve axial reciprocating motion and torsion, which enhances cutting efficiency. The suction channel and negative pressure device remove the medium from the surgical site and reduce the temperature.
It improves cutting efficiency, keeps the surgical site clear and safe, avoids overheating damage, and enhances surgical visibility and safety.
Smart Images
Figure CN224387502U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of medical apparatus and instruments, and particularly relates to a composite motion ultrasonic bone knife and ultrasonic operating handle. BACKGROUND
[0002] With the rapid development of modern medicine, ultrasonic surgical instruments have been increasingly applied in clinical surgical treatment, which applies ultrasonic energy to surgical operation and has the characteristics of fine cutting, safety, tissue selectivity and low-temperature hemostasis, greatly enriches the means of surgical operation and improves the quality of surgical operation, and to some extent, alleviates the pain of patients.
[0003] At present, although the ultrasonic bone knife performs well in precise cutting and soft tissue protection, it still has some defects and deficiencies, such as low cutting efficiency, especially slow speed in processing hard bone, which prolongs the operation time, and in addition, long-time use may cause local overheating and potential damage to the surrounding tissues. UTILIZABLE CONTENT
[0004] (I) Technical problem to be solved
[0005] In view of the above-mentioned defects and deficiencies of the prior art, the utility model provides an ultrasonic bone knife, which solves the technical problems of low cutting efficiency of the ultrasonic bone knife in the prior art and potential damage to the surrounding tissues caused by local overheating after long-time use.
[0006] (II) Technical scheme
[0007] In order to achieve the above-mentioned purpose, the utility model adopts the main technical scheme including:
[0008] Firstly, the utility model provides an ultrasonic bone knife, which comprises a knife rod and a knife head connected to the front end of the knife rod, the knife rod comprises a knife handle section and a transition section from back to front, the transition section comprises an amplitude variation section and an extension section connected to the front end of the amplitude variation section, the knife rod and the knife head form an axis extending suction channel, the suction channel can be used for connecting a negative pressure device, so that the front end of the knife head can attract medium, a plurality of torsion grooves are evenly arranged on the extension section in the circumferential direction, and the extension direction of the torsion groove is consistent with the included angle of the extension section axis after the outer wall of the extension section is unfolded.
[0009] Secondly, this utility model provides an ultrasonic operating handle, including the ultrasonic bone scalpel in the above-mentioned technical solution, and also including a shell, an ultrasonic transducer, and a head cap assembly. The ultrasonic transducer is supported inside the shell, the head cap assembly is fixedly connected to the front end of the shell, the ultrasonic bone scalpel is connected to the front end of the ultrasonic transducer, and the scalpel head extends out of the head cap assembly from inside the head cap assembly; the inner cavity of the head cap assembly forms a liquid channel, and the gap between the front end of the head cap assembly and the ultrasonic bone scalpel forms the outlet of the liquid channel; the liquid channel circumferentially surrounds the outer periphery of the front end of the scalpel handle, so that the liquid channel forms a cooling cavity on the outer periphery of the ultrasonic bone scalpel.
[0010] (III) Beneficial Effects
[0011] The beneficial effects of this invention are as follows: The ultrasonic bone scalpel of this invention, under the action of the torsion groove, allows the scalpel handle to not only reciprocate axially after connection with the ultrasonic transducer, but also to twist axially, thereby greatly improving cutting efficiency. By setting the angles to a consistent form, the torsional balance and torsional amplitude can be optimized, further enhancing the cutting effect of the ultrasonic bone scalpel.
[0012] Meanwhile, the transition section can transmit ultrasonic waves to the cutter head, and the transition section plays a good role in amplitude variation, effectively improving the amplitude of the cutter head. In addition, the axial torsional force generated by the torsion groove can also be amplified by the amplitude variation section, greatly improving the cutting efficiency of the product.
[0013] The evenly distributed torsion grooves can effectively ensure the balance of the ultrasonic bone cutter during vibration, thereby further improving the cutting effect;
[0014] The suction channel allows the scalpel to draw in and remove media such as blood, tissue fragments, and coolant from the surgical site while making cuts.
[0015] When the suction channel is connected to a negative pressure device, such as a vacuum pump, a negative pressure is created inside the channel. This negative pressure draws out the medium from the surgical site and removes it outside the surgical area through the suction channel. This helps keep the surgical site clear and clean, improving surgical visibility and safety. Simultaneously, the medium flowing inside the scalpel handle also carries away some of the heat, improving heat dissipation and effectively preventing overheating of the ultrasonic bone scalpel. This avoids secondary damage to the surgical site from high temperatures, enhancing surgical safety and ensuring cutting effectiveness. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the ultrasonic bone scalpel and ultrasonic operating handle of the present invention.
[0017] Figure 2 This is a schematic diagram of the structure of the ultrasonic bone scalpel and the front end of the ultrasonic operating handle of the present invention.
[0018] Figure 3 This is one of the structural schematic diagrams of the ultrasonic bone scalpel with a wolf-tooth-shaped blade head according to this utility model;
[0019] Figure 4 This is the second schematic diagram of the ultrasonic bone scalpel with a wolf-tooth-shaped blade head according to this utility model.
[0020] Figure 5 This is a schematic diagram of the structure of the flat claw type cutter head of this utility model. Figure 1 ;
[0021] Figure 6 This utility model Figure 5 A magnified schematic diagram of the structure at point 100 in the middle;
[0022] Figure 7 This is a schematic diagram of the structure of the flat claw type cutter head of this utility model. Figure 2 ;
[0023] Figure 8 This is a schematic diagram of the flat claw-type cutter head of this utility model.
[0024] [Explanation of Labels in the Attached Image]
[0025] 1. Tool holder; 11. Tool shank section; 12. Transition section; 121. Amplitude section; 122. Extension section;
[0026] 2. Blade head;
[0027] 21. First body; 22. First side cutting tooth; 23. Front cutting tooth;
[0028] 24. Second body; 25. Second side cutting tooth;
[0029] A. Torsion groove;
[0030] B. Threaded hole;
[0031] C. Wrench slot;
[0032] 3. Outer shell;
[0033] 4. Ultrasonic transducer;
[0034] 5. Head cap assembly; D. Liquid channel; E. Cooling chamber. Detailed Implementation
[0035] To better explain and facilitate understanding of this utility model, the following description is provided in conjunction with the appendix. Figures 1-8 This invention will be described in detail through specific embodiments. Wherein, directional terms such as "upper" and "lower" are used in this document. Figure 1 The orientation is used as a reference.
[0036] Example 1:
[0037] Reference Figures 1-8 An embodiment of this utility model provides an ultrasonic bone scalpel, including a scalpel 1 and a scalpel head 2 connected to the front end of the scalpel 1. The scalpel 1 includes a handle section 11 and a transition section 12 from back to front. The transition section 12 includes an amplitude-changing section 121 and an extension section 122 connected to the front end of the amplitude-changing section 121. The extension section 122 is circumferentially provided with a plurality of torsion grooves A. After the outer wall of the extension section 122 is unfolded, the angle between the extension direction of the torsion grooves A and the axis of the extension section 122 is 15°-30°.
[0038] In this embodiment, under the action of the torsion groove A, the cutter bar 1, after being connected to the ultrasonic transducer 4, can not only reciprocate axially but also twist axially, thereby greatly improving the cutting efficiency. By setting the angles to a consistent form, the torsional balance and torsional amplitude can be optimized, thereby further improving the cutting effect of the ultrasonic bone cutter.
[0039] Meanwhile, the transition section 12 can transmit ultrasonic waves to the cutter head 2, and the transition section 12 plays a good role in amplitude variation, effectively improving the amplitude of the cutter head 2. When the amplitude at the connection point between the cutter shank section 11 and the ultrasonic transducer 4 is about 30 micrometers, under the action of the transition section 12, the amplitude of the cutter head 2 can reach 150-200 micrometers, greatly improving the cutting efficiency of the product.
[0040] The evenly distributed torsion grooves A can effectively ensure the balance of the ultrasonic bone cutter during vibration, thereby further improving the cutting effect.
[0041] Specifically, the tool holder 1 and the tool head 2 are designed as a single unit.
[0042] More specifically, the torsion groove A is a rectangular groove with rounded ends along its length. There are 6-10 grooves, preferably 8, with a depth of 0.8-1.2 mm, preferably 1 mm, a width of 0.6-1.5 mm, preferably 1 mm, and an angle of 15-30°, preferably 25°, with the axial direction. By using the torsion groove A with the above parameters, the torsion amplitude can be further optimized, thereby further improving the cutting effect of the ultrasonic bone scalpel.
[0043] The transition section 12 is configured as one or more groups. When the transition section 12 is configured as one group, the last amplitude-changing section 121 is connected to the tool holder section 11. When the transition section 12 is configured as multiple groups, adjacent amplitude-changing sections 121 and extension sections 122 of different groups are connected. The front end of the foremost extension section 122 is connected to the tool head 2. The diameter of the extension section 122 decreases in the order from back to front. The torsion groove A is provided at least on the last side extension section 122. When the torsion groove A is provided on multiple extension sections 122, after the outer wall of the corresponding extension section 122 is unfolded, the angle between the extension direction of the torsion groove A and the axis of the extension section 122 is consistent.
[0044] In this embodiment, the number of transition sections 12 can be one or more. When there is only one set of transition sections 12, the rear end of the amplitude-changing section 121 is directly connected to the tool holder section 11. When there are multiple sets of transition sections 12, each set is connected to an amplitude-changing section 121 and an extension section 122, with the amplitude-changing section 121 and the extension section 122 adjacent and connected. The front end of the frontmost extension section 122 is connected to the tool head 2.
[0045] The diameter of the extension section 122 decreases from back to front. This design helps reduce energy loss during transmission and increases the amplitude of the blade head 2. The decreasing diameter of the extension section 122 also allows the scalpel to be more flexible and precise during cutting.
[0046] The torsion groove A can be set as one set or multiple sets. When the torsion groove A is set as one set, the axial torsion force it generates has good controllability, and the manufacturing cost of the tool holder 1 is low while its strength is high. When it is set as multiple sets, the torsion forces generated by different sets of torsion grooves A can interact to obtain a more optimized vibration frequency and vibration amplitude. However, correspondingly, the strength of the tool holder 1 will decrease and the manufacturing cost will increase.
[0047] A suction channel extending along the axis is formed within the blade holder 1 and the first body 21. The suction channel can be used to connect a negative pressure device so that the front end of the first body 21 can attract the medium.
[0048] In this embodiment, the suction channel design allows the scalpel to draw in and remove media such as blood, tissue fragments, and coolant from the surgical site while making cuts.
[0049] When the suction channel is connected to a negative pressure device, such as a vacuum pump, a negative pressure is created inside the channel. This negative pressure draws out the medium from the surgical site and removes it outside the surgical area through the suction channel. This helps keep the surgical site clear and clean, improving surgical visibility and safety. Simultaneously, the medium flowing inside the scalpel handle 1 also carries away some of the heat, improving its heat dissipation and effectively preventing overheating of the ultrasonic bone scalpel. This avoids secondary damage to the surgical site from high temperatures, enhances surgical safety, and ensures optimal cutting results.
[0050] Example 2:
[0051] Reference Figures 1-4 In addition to possessing all the technical solutions of Embodiment 1 described above, the embodiments of this utility model further possess the following technical solutions:
[0052] The cutter head 2 includes a first body 21 and first side cutting teeth 22. The first body 21 is connected to the front end of the cutter bar 1 and is coaxial with the cutter bar 1. The first side cutting teeth 22 are configured as multiple sets continuously distributed along the axial direction of the first body 21. In each set, the first side cutting teeth 22 are continuously and evenly distributed around the outer periphery of the first body 21 to form a mace-shaped cutter head. The first side cutting teeth 22 are radially outward along the first body 21.
[0053] In this embodiment, the first body 21 is the main part of the cutter head 2. It is connected to the front end of the cutter bar 1 and is coaxial with the cutter bar 1, ensuring the stability and accuracy of operation.
[0054] The first side cutting teeth 22 are continuously and evenly distributed around the outer periphery of the first body 21. This ensures that the cutting teeth can make uniform contact with the bone tissue when the cutter head 2 is twisted and vibrated in the axial direction, providing a smooth cutting effect.
[0055] The cutting teeth are arranged in multiple sets continuously distributed along the axial direction of the first body 21. That is, the cutting teeth are not a single row, but rather multiple rows along the length of the first body 21, forming a mace-like structure. This design can greatly increase the cutting area and cutting efficiency, while also providing better cutting stability and reducing the load on individual cutting teeth. This mace-shaped cutter head 2 design not only improves cutting efficiency but also provides stronger cutting force and a more uniform cutting effect during the cutting process.
[0056] The circumferential outer surfaces of the multiple sets of first side cutting teeth 22 are continuous. The angle between the projection of the outer surface formed by the multiple sets of first side cutting teeth 22 along the diameter direction of the first body 21 and the axis of the first body 21 is set to 0°-5°, so that it can better fit the operator's operating habits and further improve the cutting efficiency.
[0057] Example 3:
[0058] Reference Figures 1-4 In addition to possessing all the technical solutions of Embodiment 2 described above, the embodiments of this utility model further possess the following technical solutions:
[0059] The cutter head 2 also includes front cutting teeth 23, which are continuously distributed circumferentially at the front end of the first body 21.
[0060] In this embodiment, by providing front cutting teeth 23 at the front end of the first body 21, the ultrasonic bone scalpel can also have the function of drilling, thereby enriching the function of the ultrasonic bone scalpel and improving its flexibility of use.
[0061] Example 4:
[0062] Reference Figures 5-8In addition to possessing all the technical solutions of Embodiment 1 described above, the embodiments of this utility model further possess the following technical solutions:
[0063] The cutter head 2 includes a second body 24 and a second side cutting tooth 25. The second body 24 is fixedly connected to the radial side of the front end of the cutter bar 1. The second side cutting tooth 25 is continuously distributed along the first arc surface on the radial outer side of the second body 24 along the front end of the cutter bar 1 to form a cutting surface. The outer edge of the cutting surface forms a cutting edge. The axis of the first arc surface is parallel to the axis of the cutter bar 1.
[0064] In this embodiment, the second body 24, which is fixedly connected to the radial side of the front end of the blade holder 1, is not coaxially connected to the blade holder 1, but is offset from the centerline and located on one side of the blade holder 1. This design can be used for specific surgical needs, such as when cutting is required from a specific angle or position, like side grinding operations.
[0065] The second side cutting teeth 25 are continuously distributed along a surface called the first arc surface on the second body 24, and protrude from the outer surface of the second body 24. The continuous distribution of the cutting teeth ensures a smooth and uniform cutting surface, which is crucial for precise cutting during surgery.
[0066] The presence of the cutting surface allows the blade 2 to provide a stable cutting plane during surgery, which in turn facilitates precise cutting depth and accurate tissue removal.
[0067] The cutting edge is a part that can apply greater stress to the cutting position. By setting the cutting edge, more possibilities are provided for the use of the ultrasonic bone scalpel, such as its use as a crushing knife, thereby further improving the flexibility of the ultrasonic bone scalpel.
[0068] Example 5:
[0069] Reference Figures 5-7 In addition to possessing all the technical solutions of Embodiment 4 described above, the embodiments of this utility model further possess the following technical solutions:
[0070] The cutting surface is parallel to the axis of the cutter shank 1 to form a flat claw-shaped cutter head.
[0071] In this embodiment, this design allows the blade head 2 to provide a stable cutting direction parallel to the axis of the blade shank 1 during operation. This results in a larger contact area between the cutting surface and the surgical site during surgery, enabling simultaneous surgical procedures over a large area and thus improving surgical efficiency. Simultaneously, the flat-claw blade head provides an even larger contact area and more uniform cutting pressure, which helps reduce trauma and bleeding during surgery while also improving cutting efficiency.
[0072] Example 6:
[0073] Reference Figure 8 In addition to possessing all the technical solutions of Embodiment 4 described above, the embodiments of this utility model further possess the following technical solutions:
[0074] The cutting surface forms an angle of 15°-60° with the axis of the cutter shank 1 to form a chevron-shaped cutter head; the front end of the cutting surface is closer to the axis of the cutter shank 1 than the rear end. This design makes the rear cutting edge of the cutting surface more prominent, so that the cutter head 2 can provide greater pressure and more concentrated cutting force during cutting, which helps to remove stubborn tissue more effectively and improve cutting efficiency.
[0075] The first side cutting tooth 22 and the second side cutting tooth 25 mentioned above are both set as a four-sided pyramid shape, with the tip of the four-sided pyramid facing outward. After the cutting teeth of this shape are spliced together, the bottom can form a chip-accommodating area, thereby preventing the cutting chips from flying and improving the convenience of handling cutting chips.
[0076] Example 7:
[0077] Reference Figures 1-8 In addition to possessing all the technical solutions of any of the above embodiments, the embodiments of this utility model further possess the following technical solutions:
[0078] The tool holder section 11 has a threaded hole B axially opened at the rear end; a wrench slot C is opened on the outer peripheral wall of the tool holder section 11, and two wrench slots C are set symmetrically along the axis of the tool holder section 11; the wrench slot C is set as a stepped groove to form a foolproof groove.
[0079] In this embodiment, the threaded hole B and the transducer's amplitude rod are threaded together. A torque wrench with a torque range of 1.6-2.8 N·m is used to tighten and fix the cutter bar 1 and the amplitude rod. A fixed torque value ensures consistency for future customer use. If the cutter bar 1 is too loose, the high-frequency vibration during ultrasonic wave propagation will cause the threads to loosen, preventing the ultrasonic waves from traveling forward and causing the cutter bar 1 to lose its cutting ability. Excessive torque can damage the transducer or the threads of the cutter bar 1. Damaged threads will cause abnormal noise and prevent the cutter bar 1 from functioning properly. A fixed torque value improves the cutting efficiency, safety, stability, and product consistency of the cutter bar 1.
[0080] Since the wrench slot C is a foolproof slot, it has a unique way of engaging with the wrench, thus ensuring the reliability of the tool holder 1 when it is twisted.
[0081] Example 8:
[0082] Figures 1-8In addition to providing an ultrasonic operating handle, the present invention includes the ultrasonic bone scalpel in any of the above embodiments, and also includes a housing 3, an ultrasonic transducer 4, and a head cap assembly 5. The ultrasonic transducer 4 is supported inside the housing 3, and the head cap assembly 5 is fixedly connected to the front end of the housing 3. The ultrasonic bone scalpel is connected to the front end of the ultrasonic transducer 4, and the blade 2 extends out of the head cap assembly 5. The inner cavity of the head cap assembly 5 forms a liquid channel D, and the gap between the front end of the head cap assembly 5 and the ultrasonic bone scalpel forms the outlet of the liquid channel D. The liquid channel D circumferentially surrounds the outer periphery of the front end of the blade 1, so that the liquid channel D forms a cooling cavity E on the outer periphery of the ultrasonic bone scalpel.
[0083] In this embodiment, a medium liquid, such as physiological saline, can be introduced into the liquid channel D. Under natural flow or negative pressure at the front end of the suction channel, the medium liquid will flow over the part of the scalpel exposed at the tip cap assembly 5. Under the action of high-frequency vibration, the medium liquid will be atomized, and at the same time, the temperature of the scalpel will be reduced.
[0084] At the same time, the atomized medium can flush the surgical site, improve visibility during the surgery, and thus improve the safety of the procedure.
[0085] The cooling chamber E can further reduce the temperature of the scalpel 1 and improve the stability of the ultrasonic bone scalpel in use.
[0086] It can be understood that, except for conflicting parts, the above embodiments 1-8 can be freely combined to form other embodiments of this utility model.
[0087] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0088] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0089] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0090] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.
[0091] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.
Claims
1. A composite motion ultrasonic bone scalpel, characterized in that: It includes a tool holder (1) and a tool head (2) connected to the front end of the tool holder (1). The tool holder (1) includes a tool shank section (11) and a transition section (12) from back to front. The transition section (12) includes a variable amplitude section (121) and an extension section (122) connected to the front end of the variable amplitude section (121). The blade (1) and the blade (2) form an axially extending suction channel, which can be used to connect a negative pressure device so that the front end of the blade (2) can attract the medium. The extension section (122) is provided with a plurality of torsion grooves (A) evenly distributed in the circumferential direction. After the outer wall of the extension section (122) is unfolded, the extension direction of the torsion grooves (A) is consistent with the angle between the extension direction and the axis of the extension section (122).
2. The ultrasonic bone scalpel with composite motion as described in claim 1, characterized in that: The transition section (12) is set as one or more groups. When the transition section (12) is a group, the last end of the amplitude section (121) is connected to the tool holder section (11). When the transition section (12) is set as multiple groups, the adjacent amplitude sections (121) and extension sections (122) of different groups are connected. The front end of the frontmost extension section (122) is connected to the tool head (2). The diameter of the extension section (122) decreases in the order from back to front. The torsion groove (A) is provided at least on the rearmost extension (122); The torsion groove (A) is set as a rectangular groove, and the two ends of the torsion groove (A) in the length direction are arc-shaped; the depth of the torsion groove (A) is 0.8-1.2mm, the width is 0.6-1.5mm, and the angle between the extension direction of the torsion groove (A) and the axis of the extension segment (122) is 15°-30°.
3. The ultrasonic bone scalpel with composite motion as described in claim 2, characterized in that: The cutter head (2) includes a first body (21) and a first side cutting tooth (22). The first body (21) is connected to the front end of the cutter bar (1) and is coaxial with the cutter bar (1). The first side cutting tooth (22) is configured as multiple sets continuously distributed along the axial direction of the first body (21). In each set, the first side cutting tooth (22) is continuously and evenly distributed around the outer periphery of the first body (21) to form a mace-shaped cutter head. The first side cutting tooth (22) faces outward along the radial direction of the first body (21).
4. The ultrasonic bone scalpel with composite motion as described in claim 3, characterized in that: The circumferential outer surfaces of multiple sets of first side cutting teeth (22) are continuous, and the projection of the outer surface formed by multiple sets of first side cutting teeth (22) along the diameter direction of the first body (21) has an angle of 0°-5° with the axis of the first body (21).
5. The ultrasonic bone scalpel with composite motion as described in claim 3, characterized in that: The cutter head (2) also includes front cutting teeth (23), which are continuously distributed circumferentially at the front end of the first body (21) and face forward.
6. The ultrasonic bone scalpel with composite motion as described in claim 2, characterized in that: The cutter head (2) includes a second body (24) and a second side cutting tooth (25). The second body (24) is fixedly connected to the radial side of the front end of the cutter bar (1). The second side cutting tooth (25) is continuously distributed along the first arc surface on the radial outer side of the second body (24) along the front end of the cutter bar (1) to form a cutting surface. The outer edge of the cutting surface forms a cutting edge. The axis of the first arc surface is parallel to the axis of the tool holder (1).
7. The ultrasonic bone scalpel with composite motion as described in claim 6, characterized in that: The cutting surface is parallel to the axis of the cutter bar (1) to form a flat claw-shaped cutter head.
8. The ultrasonic bone scalpel with composite motion as described in claim 6, characterized in that: The cutting surface forms an angle of 15°-60° with the axis of the cutter bar (1) to form a chamfered cutter head; The front end of the cutting surface is closer to the axis of the tool holder (1) than the rear end of the cutting surface.
9. The ultrasonic bone scalpel with composite motion as described in any one of claims 1-8, characterized in that: The rear end of the tool handle section (11) is provided with a threaded hole (B); the outer peripheral wall of the tool handle section (11) is provided with a wrench slot (C), and the wrench slot (C) is provided with two symmetrically arranged along the axial direction of the tool handle section (11); The wrench slot (C) is configured as a stepped slot to form a foolproof groove.
10. An ultrasonic operating handle, characterized in that: Including an ultrasonic bone scalpel with compound motion as described in any one of claims 1-9; It also includes a housing (3), an ultrasonic transducer (4) and a head cap assembly (5), wherein the ultrasonic transducer (4) is supported inside the housing (3), the head cap assembly (5) is fixedly connected to the front end of the housing (3), the ultrasonic bone scalpel with compound motion is connected to the front end of the ultrasonic transducer (4), and the scalpel head (2) extends out of the head cap assembly (5) from inside the head cap assembly (5). The inner cavity of the head cap assembly (5) forms a liquid channel (D), and the gap between the front end of the head cap assembly (5) and the ultrasonic bone scalpel of the compound motion forms the outlet of the liquid channel (D). The liquid channel (D) circumferentially surrounds the outer periphery of the front end of the blade (1) so that the liquid channel (D) forms a cooling cavity (E) on the outer periphery of the ultrasonic bone scalpel in compound motion.