Ultrasonic osteotome handle and ultrasonic scalpel

Abstract

The utility model discloses an ultrasonic osteotome handle and an ultrasonic scalpel, and relates to the technical field of medical instruments, the ultrasonic osteotome handle comprises a first shell, a second shell, an energy converter, a liquid pipe assembly and a locking piece, the energy converter is at least partially arranged in a first sub-cavity of the first shell in a penetrating mode, and a cooling channel connecting the liquid pipe assembly and the energy converter is arranged in a second sub-cavity of the second shell in a penetrating mode. A positioning shaft shoulder is arranged on the outer wall of the liquid pipe assembly, the second shell is provided with a second sub-cavity and an assembling hole communicated with the second sub-cavity, a positioning protrusion is arranged on the inner wall of the assembling hole, the liquid pipe assembly is sleeved with the second shell through the assembling hole, the second shell is connected with the first shell, and the locking piece is connected with the liquid pipe assembly. The locking piece and the positioning shaft shoulder abut against the two opposite sides of the positioning protrusion so as to limit axial movement of the second shell. According to the technical scheme provided by the utility model, the reliability of connection between the transducer and the liquid pipe assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an ultrasonic bone scalpel handle and an ultrasonic surgical scalpel. Background Technology

[0002] To dissipate heat from the ultrasonic bone scalpel handle during operation, liquid cooling is generally used. The liquid cooling path flows through the inside of the transducer, thereby effectively cooling the transducer that vibrates at high frequencies.

[0003] An ultrasonic bone scalpel handle is provided, comprising a first housing, a second housing, a transducer, and a liquid tube assembly. During assembly, the liquid tube assembly is first threaded into the second housing, connecting the liquid tube assembly and the second housing as a whole. Then, sealant is applied to the mating end faces of the transducer and the liquid tube assembly. Finally, the second housing is joined to the first housing, and at the same time, the liquid tube assembly inside the second housing is connected to the transducer, thus completing the assembly.

[0004] However, due to the obstruction of the second housing, the liquid line assembly and the transducer are not visible during connection, and the operator performs blind assembly. This results in low reliability of the connection between the transducer and the liquid line assembly, and is prone to coolant leakage due to poor sealing. Utility Model Content

[0005] The main purpose of this invention is to provide an ultrasonic bone scalpel handle and an ultrasonic surgical scalpel, which aims to improve the reliability of the connection between the transducer and the liquid tubing assembly.

[0006] To achieve the above objectives, the ultrasonic bone scalpel handle proposed in this utility model includes:

[0007] The first housing has a first sub-cavity;

[0008] A transducer, at least partially inserted into the first sub-cavity, is provided with a cooling channel;

[0009] A liquid pipe assembly, one end of which is connected to the cooling channel and the other end of which extends away from the transducer, and the outer wall of the liquid pipe assembly is provided with a positioning shoulder;

[0010] A second housing has a second sub-cavity. One end of the second housing is connected to the first housing, and the first sub-cavity communicates with the second sub-cavity. The other end of the second housing has an assembly hole communicating with the second sub-cavity. The inner wall of the assembly hole has a positioning protrusion. The liquid tubing assembly is fitted onto the second housing through the assembly hole.

[0011] A locking member is fitted over the liquid tube assembly, and the locking member and the positioning shoulder respectively abut against opposite sides of the positioning protrusion to restrict axial movement of the second housing.

[0012] In one embodiment, the locking member is sleeved on the outside of the liquid tube assembly and threadedly connected to the outer wall of the liquid tube assembly.

[0013] In one embodiment, the locking member has an operating hole extending along its own axial direction, and the operating hole has at least two holes; and / or,

[0014] The end of the assembly hole opposite to the second sub-cavity is provided with a receiving groove, and the locking member is at least partially disposed in the receiving groove.

[0015] In one embodiment, the liquid tubing assembly includes:

[0016] The injection tube, the outer wall of which is provided with the positioning shoulder, passes through the assembly hole; and

[0017] A flexible tube, one end of which is sealed to the transducer, and the other end of which is sealed to the injection tube.

[0018] In one embodiment, an anti-rotation structure is further included, which is disposed between the inner wall of the assembly hole and the injection tube, for limiting the rotation of the injection tube relative to the second housing.

[0019] In one embodiment, the anti-rotation structure includes an anti-rotation protrusion and an anti-rotation notch. The anti-rotation notch is provided in one of the inner wall of the assembly hole and the positioning shoulder, and the anti-rotation protrusion corresponding to the anti-rotation notch is provided in the other of the inner wall of the assembly hole and the positioning shoulder. The anti-rotation protrusion and the anti-rotation notch cooperate to restrict the rotation of the injection tube within the assembly hole.

[0020] In one embodiment, a seal is also included, disposed between the positioning protrusion and the positioning shoulder, to seal the connection between the liquid tube assembly and the second housing.

[0021] In one embodiment, the sealing element is a star-shaped sealing ring or an O-ring.

[0022] In one embodiment, the second housing portion is fitted over the outside of the first housing, or the first housing portion is fitted over the outside of the second housing; and / or,

[0023] The second housing is detachably connected to the first housing.

[0024] This utility model also proposes an ultrasonic scalpel, including a cutting tool and the aforementioned ultrasonic bone scalpel handle, wherein the cutting tool is connected to the ultrasonic bone scalpel handle.

[0025] The ultrasonic bone scalpel handle of this utility model includes a first housing, a transducer, a liquid pipe assembly, a second housing, and a locking component. The liquid pipe assembly is used to circulate coolant and is connected to the cooling channel of the transducer to achieve liquid cooling of the transducer. During assembly, the liquid pipe assembly is first connected to the transducer. Then, the second housing is fitted onto the outside of the liquid pipe assembly from the end away from the transducer. The second housing is then moved towards the first housing until the positioning shoulder on the outer wall of the liquid pipe assembly abuts against the positioning protrusion in the assembly hole of the second housing, preventing further movement of the second housing. Then, the first housing and the second housing are connected. Finally, the locking component and the liquid pipe assembly are connected, so that the locking component and the positioning shoulder abut against the opposite sides of the positioning protrusion, thereby completing the assembly. This design of the ultrasonic bone scalpel handle requires the assembly of the liquid tubing assembly and transducer first, followed by the assembly of the second housing. This allows for full visibility of the connection process between the liquid tubing assembly and the transducer, thereby improving the reliability of the connection and reducing the likelihood of poor sealing. This prevents coolant leakage and ensures the lifespan of the ultrasonic bone scalpel handle. Furthermore, after connecting the transducer and liquid tubing assembly, a sealing test can be performed promptly. Even if a poor seal is found between the transducer and liquid tubing assembly, it is easier to rework and repair compared to existing structures, thus improving production efficiency and yield. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a partial structural cross-sectional view of the ultrasonic bone scalpel handle described in the background art;

[0028] Figure 2 Cross-sectional view of a partial structure of an embodiment of the ultrasonic bone scalpel handle provided by this utility model. Figure 1 ;

[0029] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0030] Figure 4 Cross-sectional view of a partial structure of an embodiment of the ultrasonic bone scalpel handle provided by this utility model. Figure 2 ;

[0031] Figure 5 A cross-sectional view of the second housing of the ultrasonic bone scalpel handle provided by this utility model;

[0032] Figure 6 A schematic diagram of the structure of the second housing of the ultrasonic bone scalpel handle provided by this utility model;

[0033] Figure 7 A schematic diagram of the injection tube structure of the liquid tube assembly of the ultrasonic bone scalpel handle provided by this utility model;

[0034] Figure 8 A cross-sectional view of the injection tube of the liquid tube assembly of the ultrasonic bone scalpel handle provided by this utility model.

[0035] Figure 9 A schematic diagram of the locking component of the ultrasonic bone scalpel handle provided by this utility model.

[0036] Explanation of icon numbers:

[0037] 100. First shell; 101. First sub-cavity;

[0038] 200. Second housing; 201. Second sub-cavity; 202. Assembly hole; 203. Positioning protrusion; 204. Receiving groove;

[0039] 300. Transducer; 301. Cooling channel;

[0040] 400. Liquid tubing assembly; 410. Injection tubing; 411. Positioning shoulder; 412. Mounting groove; 420. Flexible tubing;

[0041] 500, Locking component; 501, Operating hole;

[0042] 610. Anti-rotation protrusion; 620. Anti-rotation notch;

[0043] 700. Sealing components.

[0044] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, or a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0049] Reference Figure 1 The ultrasonic bone scalpel handle mentioned in the background art includes a first housing 100, a second housing 200, a transducer 300, and a liquid pipe assembly 400. Since the liquid pipe assembly 400 and the second housing 200 are connected by threads, the ultrasonic bone scalpel handle can only be assembled with the liquid pipe assembly 400 and the second housing 200 first to connect them as a whole, and then the second housing 200 is assembled with the first housing 100. As a result, the internal liquid pipe assembly 400 and the transducer 300 are not visible when connected, and the operator performs blind assembly. This leads to low reliability of the connection between the transducer 300 and the liquid pipe assembly 400, and is prone to coolant leakage due to poor sealing.

[0050] This utility model proposes an ultrasonic bone scalpel handle.

[0051] Reference Figures 2 to 5 , Figure 2Cross-sectional view of a partial structure of an embodiment of the ultrasonic bone scalpel handle provided by this utility model. Figure 1 , Figure 3 for Figure 2 A magnified view of a portion of point A in the middle. Figure 4 Cross-sectional view of a partial structure of an embodiment of the ultrasonic bone scalpel handle provided by this utility model. Figure 2 , Figure 5 A cross-sectional view of the second housing of the ultrasonic bone scalpel handle provided by this utility model.

[0052] In one embodiment of this utility model, the ultrasonic bone scalpel handle includes:

[0053] The first housing 100 is provided with a first sub-cavity 101;

[0054] The transducer 300 is at least partially installed inside the first sub-cavity 101, and the transducer 300 is provided with a cooling channel 301;

[0055] Liquid pipe assembly 400, one end of which is connected to cooling channel 301, and the other end extends away from transducer 300. The outer wall of liquid pipe assembly 400 is provided with positioning shoulder 411.

[0056] The second housing 200 has a second sub-cavity 201. One end of the second housing 200 is connected to the first housing 100, and the first sub-cavity 101 communicates with the second sub-cavity 201. The other end of the second housing 200 has an assembly hole 202 communicating with the second sub-cavity 201. The inner wall of the assembly hole 202 has a positioning protrusion 203. The liquid pipe assembly 400 is sleeved onto the second housing 200 through the assembly hole 202.

[0057] The locking member 500 is sleeved on the liquid pipe assembly 400, and the locking member 500 and the positioning shoulder 411 respectively abut against the opposite sides of the positioning protrusion 203 to restrict the axial movement of the second housing 200 relative to the liquid pipe assembly.

[0058] The ultrasonic bone scalpel handle of this utility model includes a first housing 100, a transducer 300, a liquid pipe assembly 400, a second housing 200, and a locking member 500. The liquid pipe assembly 400 is used to circulate coolant and is connected to the cooling channel 301 of the transducer 300 to achieve liquid cooling of the transducer 300. During assembly, first connect the liquid pipe assembly 400 to the transducer 300. Then, place the second housing 200 around the outside of the liquid pipe assembly 400 from the end of the liquid pipe assembly 400 away from the transducer 300. Next, move the second housing 200 toward the first housing 100 until the positioning shoulder 411 on the outer wall of the liquid pipe assembly 400 abuts against the positioning protrusion 203 in the assembly hole 202 of the second housing 200, preventing the second housing 200 from moving further. Then connect the first housing 100 and the second housing 200. Finally, connect the locking member 500 and the liquid pipe assembly 400 so that the locking member 500 and the positioning shoulder 411 abut against the opposite sides of the positioning protrusion 203, thereby completing the assembly. This design of the ultrasonic bone scalpel handle requires the assembly of the liquid tubing assembly 400 and transducer 300 first, followed by the assembly of the second housing 200. This allows for full visibility of the connection process between the liquid tubing assembly 400 and transducer 300, reducing assembly difficulty and improving the reliability of the connection. This reduces the likelihood of poor sealing between the transducer 300 and the liquid tubing assembly 400, preventing coolant leakage and ensuring the lifespan of the ultrasonic bone scalpel handle. Furthermore, after connecting the transducer 300 and the liquid tubing assembly 400, a sealing test can be performed immediately. Even if a poor seal occurs, it is easier to rework and repair compared to existing designs, thereby improving production efficiency and yield.

[0059] The locking member 500 and the liquid pipe assembly 400 can be connected by means of threaded connection or snap-fit, and the first housing 100 and the second housing 200 can be connected by means of snap-fit ​​or screw fastening.

[0060] In one embodiment, the locking member 500 is sleeved on the outside of the liquid pipe assembly 400 and threadedly connected to the outer wall of the liquid pipe assembly 400.

[0061] Reference Figure 2 and Figure 9In this embodiment of the invention, the locking member 500 is a threaded ring, which is sleeved on the outside of the liquid tube assembly 400 and threadedly connected to the liquid tube assembly 400. This design is simple in structure, easy to manufacture, and small in size, which is beneficial for the lightweight design of the ultrasonic bone scalpel handle. Specifically, in this embodiment, during the tightening process, the distance between the locking member 500 and the positioning shoulder 411 continuously decreases, thereby pressing the seal 700 between the positioning shoulder 411 and the positioning protrusion 203, improving the sealing effect of the seal 700.

[0062] In one embodiment, the locking member 500 is provided with an operating hole 501 extending along its own axial direction, and the operating hole 501 is provided with at least two holes; and / or,

[0063] The assembly hole 202 is provided with a receiving groove 204 at one end away from the second sub-cavity 201, and the locking member 500 is at least partially provided in the receiving groove 204.

[0064] Reference Figure 9 In an embodiment of this utility model, the locking member 500 is provided with an operating hole 501. There are two or more operating holes 501. The user inserts a tool into the operating hole 501 to facilitate the rotation of the locking member 500, thereby tightening or loosening the locking member 500 and realizing the assembly and disassembly of the locking member 500 and the liquid tube assembly 400.

[0065] Reference Figure 2 and Figure 5 In this embodiment of the present invention, a receiving groove 204 is provided at the end of the assembly hole 202 facing the external environment. After the threaded connection between the locking member 500 and the liquid tube assembly 400 is tightened, the locking member 500 is received inside the receiving groove 204, which improves the structural compactness of the entire ultrasonic bone scalpel handle. In addition, the second housing 200 can also play a certain protective role for the locking member 500 and extend the service life of the ultrasonic bone scalpel handle.

[0066] In one embodiment, the liquid line assembly 400 includes:

[0067] Injection tube 410, the outer wall of injection tube 410 is provided with positioning shoulder 411, injection tube 410 passes through assembly hole 202 and is connected to locking member 500; and

[0068] Flexible tube 420, one end of which is sealed and connected to transducer 300, and the other end of which is sealed and connected to injection tube 410.

[0069] Reference Figure 2 and Figure 4In this embodiment of the invention, the liquid pipe assembly 400 includes an injection pipe 410 and a flexible pipe 420. A second housing 200 is sleeved over the injection pipe 410. The flexible pipe 420 connects the injection pipe 410 and the transducer 300. The flexible pipe 420 is made of materials such as rubber or silicone and possesses a certain degree of flexibility, allowing it to deform in length and angle. Using the flexible pipe 420 to connect to the transducer 300 prevents loosening or detachment during high-frequency vibration of the transducer 300, ensuring a reliable connection between the liquid pipe assembly 400 and the transducer 300. Sealing connections between the flexible pipe 420 and the transducer 300, and between the flexible pipe 420 and the injection pipe 410, can be achieved through methods such as applying sealant, using sealing tape, or interference fit.

[0070] In one embodiment, the ultrasonic bone scalpel handle also includes an anti-rotation structure disposed between the inner wall of the mounting hole 202 and the injection tube 410, for limiting the rotation of the injection tube 410 relative to the second housing 200.

[0071] In this embodiment of the invention, an anti-rotation structure is provided between the inner wall of the assembly hole 202 and the injection tube 410 to restrict the rotation of the injection tube 410 relative to the second housing 200. This is particularly beneficial when assembling and disassembling the locking member 500 and the injection tube 410, improving the ease of threading and thus increasing the efficiency of assembling and disassembling the ultrasonic bone scalpel handle. The anti-rotation structure can take various forms such as a key, pin, boss, groove, or stop block. For example, a boss or groove can be radially provided on the inner wall of the assembly hole 202, and a corresponding groove or boss can be provided on the injection tube 410. When the injection tube 410 is inserted into the assembly hole 202, the boss and groove cooperate to restrict the rotation of the injection tube 410. Alternatively, a combination of a key and a keyway can be used. The key is installed on the inner wall of the assembly hole 202, and a keyway is provided on the injection tube 410. When the injection tube 410 is inserted into the second housing 200, the key enters the keyway, thus preventing rotation.

[0072] In one embodiment, the anti-rotation structure includes an anti-rotation protrusion 610 and an anti-rotation notch 620. The anti-rotation notch 620 is provided in one of the inner wall of the mounting hole 202 and the positioning shoulder 411, and the anti-rotation protrusion 610 corresponding to the anti-rotation notch 620 is provided in the other of the inner wall of the mounting hole 202 and the positioning shoulder 411. The anti-rotation protrusion 610 and the anti-rotation notch 620 cooperate to restrict the rotation of the injection tube 410 within the mounting hole 202.

[0073] Combination Figure 6 and Figure 7In this embodiment of the invention, the anti-rotation structure includes an anti-rotation protrusion 610 and an anti-rotation notch 620. The anti-rotation notch 620 can be provided on the inner wall of the assembly hole 202, and the anti-rotation protrusion 610 can be correspondingly provided on the positioning shoulder 411. Alternatively, the anti-rotation protrusion 610 can be provided on the inner wall of the assembly hole 202, and the anti-rotation notch 620 can be correspondingly provided on the positioning shoulder 411. The anti-rotation protrusion 610 and the anti-rotation notch 620 cooperate to form an anti-rotation function, restricting the rotation of the injection tube 410. The structure is simple and easy to manufacture. The shape and number of the anti-rotation protrusion 610 and the anti-rotation notch 620 can be specifically designed as needed to ensure that the injection tube 410 can be smoothly inserted into the assembly hole 202 during assembly; no limitation is made here.

[0074] In one embodiment, the ultrasonic bone scalpel handle further includes a seal 700 disposed between the positioning protrusion 203 and the positioning shoulder 411 to seal the connection between the fluid tube assembly 400 and the second housing 200.

[0075] Combination Figures 2 to 5 In this embodiment of the invention, a sealing element 700 is provided between the positioning protrusion 203 and the positioning shoulder 411 to ensure the sealing of the ultrasonic bone scalpel handle, preventing dust, liquids, etc. from the external environment from entering the cavity, thereby protecting the components inside the cavity and extending the service life of the ultrasonic bone scalpel handle. The sealing element 700 can be a sealing ring or a sealing gasket, or it can be formed by applying sealant to the positioning protrusion 203 and / or the positioning shoulder 411 and allowing it to solidify.

[0076] In one embodiment, the seal 700 is a star-shaped seal or an O-ring seal.

[0077] In embodiments of this utility model, the seal 700 can be adopted as follows: Figure 4 The star-shaped sealing ring shown has a star-shaped or plum-shaped cross-section, which can provide a good sealing effect with a small amount of compression. The seal 700 can also use an O-ring with a circular cross-section, which is simple to install and has a lower cost. Specifically, in this embodiment, the seal 700 uses a star-shaped sealing ring, and the outer peripheral wall of the injection pipe 410 is provided with an installation groove 412. The star-shaped sealing ring is fitted into the installation groove 412, improving the ease of assembly of the seal 700.

[0078] In one embodiment, the second housing 200 is partially fitted over the outside of the first housing 100, or the first housing 100 is partially fitted over the outside of the second housing 200; and / or,

[0079] The second housing 200 is detachably connected to the first housing 100.

[0080] Reference Figure 2In the embodiments of this utility model, the first shell 100 and the second shell 200 are sleeved together. Either the end of the second shell 200 near the first shell 100 is sleeved on the outside of the first shell 100, or the end of the first shell 100 near the second shell 200 is sleeved on the outside of the second shell 200. This results in a larger contact area between the second shell 200 and the first shell 100, improving the stability and tightness of the shell, and making the structure of the entire ultrasonic bone scalpel handle more compact.

[0081] In embodiments of this utility model, the second housing 200 and the first housing 100 are detachably connected by means of snap-fit ​​or screw fastening, which facilitates the maintenance and replacement of components in the receiving cavity and extends the service life of the ultrasonic bone scalpel handle.

[0082] Specifically, in this embodiment, the assembly process of the ultrasonic bone scalpel handle is as follows: First, apply sealant to both ends of the flexible tube 420; second, connect one end of the flexible tube 420 to the transducer 300 and the other end of the flexible tube 420 to the injection tube 410; then, perform a sealing test on the transducer 300, the flexible tube 420, and the injection tube 410; then, fit the sealing member 700 onto the outside of the injection tube 410; then, fit the second housing 200 onto the outside of the injection tube 410, so that the anti-rotation protrusion 610 engages with the anti-rotation notch 620; then, tighten the screws to lock the first housing 100 and the second housing 200; finally, thread the locking member 500 onto the injection tube 410.

[0083] This utility model also proposes an ultrasonic scalpel, including a blade (not shown in the figure) and the aforementioned ultrasonic bone scalpel handle, with the blade connected to the ultrasonic bone scalpel handle. The specific structure of the ultrasonic bone scalpel handle is as described in the above embodiments. Since this ultrasonic scalpel adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0084] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An ultrasonic bone knife handle, characterized by, The application comprises: a first shell provided with a first sub-cavity; a transducer at least partially arranged in the first sub-cavity, the transducer being provided with a cooling channel; a liquid pipe assembly, one end of the liquid pipe assembly being communicated with the cooling channel, the other end of the liquid pipe assembly extending away from the transducer, and an outer wall of the liquid pipe assembly being provided with a positioning shoulder; a second shell provided with a second sub-cavity, one end of the second shell being connected to the first shell, the first sub-cavity being communicated with the second sub-cavity, the other end of the second shell being provided with an assembly hole communicated with the second sub-cavity, an inner wall of the assembly hole being provided with a positioning protrusion, and the liquid pipe assembly being sleeved on the second shell through the assembly hole; a locking member sleeved on the liquid pipe assembly, and the locking member and the positioning shoulder being respectively abutted on opposite sides of the positioning protrusion to limit axial movement of the second shell relative to the liquid pipe assembly. The locking member is sleeved on the outside of the liquid pipe assembly and is threadedly connected with the outer wall of the liquid pipe assembly.

2. The ultrasonic osteotome handle of claim 1, wherein, The locking member is provided with an operating hole extending in the axial direction of the locking member, and the operating hole is provided with at least two; and / or 3. The ultrasonic osteotome handle of claim 2, wherein, The end of the assembly hole away from the second sub-cavity is provided with a receiving groove, and the locking member is at least partially arranged in the receiving groove. The liquid pipe assembly comprises:

4. The ultrasonic osteotome handle of claim 1, wherein, a liquid injection pipe, and an outer wall of the liquid injection pipe is provided with the positioning shoulder, and the liquid injection pipe is arranged in the assembly hole; and a flexible pipe, one end of the flexible pipe being sealingly connected to the transducer, and the other end of the flexible pipe being sealingly connected to the liquid injection pipe. Further comprising an anti-rotation structure arranged between the inner wall of the assembly hole and the liquid injection pipe to limit rotation of the liquid injection pipe relative to the second shell.

5. The ultrasonic osteotome handle of claim 4, wherein the handle is configured to be held in a hand of a user such that the handle is oriented in a substantially vertical orientation with respect to the ground. The anti-rotation structure comprises an anti-rotation protrusion and an anti-rotation notch, one of the inner wall of the assembly hole and the positioning shoulder is provided with the anti-rotation notch, and the other of the inner wall of the assembly hole and the positioning shoulder is provided with the anti-rotation protrusion corresponding to the anti-rotation notch, and the anti-rotation protrusion and the anti-rotation notch cooperate to limit rotation of the liquid injection pipe in the assembly hole.

6. The ultrasonic osteotome handle of claim 5, wherein, Further comprising a sealing member arranged between the positioning protrusion and the positioning shoulder to sealingly connect the liquid pipe assembly and the second shell.

7. The ultrasonic osteotome handle of claim 1, wherein the handle is configured to be held by a hand of a user. The sealing member is a star-shaped sealing ring or an O-shaped sealing ring.

8. The ultrasonic osteotome handle of claim 7, wherein, The second shell is partially sleeved on the outside of the first shell, or the first shell is partially sleeved on the outside of the second shell; and / or 9. The ultrasonic osteotome handle of any one of claims 1 to 8, wherein, The second shell is detachably connected with the first shell. The application comprises a knife and an ultrasonic bone knife handle as claimed in any one of claims 1 to 9, and the knife is connected to the ultrasonic bone knife handle.

10. An ultrasonic surgical blade, characterized by, ​

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