An ultrasonic surgical instrument with cooling function

Abstract

This invention provides an ultrasonic surgical blade with a cooling function, comprising a blade head, a blade head transition structure, a main body, and a blade tail connected in sequence. A cooling channel is provided inside the blade. The cooling channel includes a first component and a second component that are interconnected. The cooling channel includes an inlet and an outlet, the inlet for injecting cooling medium and the outlet for discharging cooling medium. The main body and / or the blade tail are provided with one or more inlets, and the blade head and / or the blade head transition structure are provided with at least one outlet. This invention provides a cooling channel inside the blade, allowing the cooling medium to flow directly inside the surgical blade, enabling sufficient heat exchange with various parts of the blade. This increases the cooling area, improves heat transfer efficiency, and allows for faster and more effective temperature reduction of the blade, ensuring the thermal safety of the surgical procedure.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, specifically to an ultrasonic surgical instrument with a cooling function. Background Technology

[0002] When performing minimally invasive surgery on bone tissue (taking the skull as an example) using an ultrasonic bone scalpel, such as creating micro-holes or grooves (broadly referred to as microchannels), a significant amount of frictional heat is generated between the scalpel and the bone tissue. If this heat cannot be dissipated in time, the scalpel temperature will rise rapidly. Excessively high scalpel temperatures not only affect the scalpel's performance and shorten its lifespan but also cause thermal damage to the surrounding bone tissue. Bone tissue undergoes pathological changes such as degeneration and necrosis under high temperatures, which not only affects the surgical outcome and increases the difficulty of postoperative recovery for the patient but may also trigger a series of complications, such as infection and increased pain.

[0003] Currently, the common method for addressing tool cooling is to cool the tool surface. This is typically done by externally spraying a cooling medium, such as saline solution, which comes into contact with the tool surface and carries away some heat. However, this surface cooling method has many limitations. Especially when creating micro-invasive channels such as micropores or micro-slits in bone tissue, it is difficult for the coolant to penetrate the machining area, making it difficult to effectively cool the bone tissue in the machining area. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing an ultrasonic surgical instrument with a cooling function, as detailed below:

[0005] An ultrasonic surgical tool with cooling function includes a cutting head, a cutting head transition structure, a main body and a cutting tail connected in sequence; the ultrasonic surgical tool has a cooling channel inside.

[0006] The cooling channel includes a first component and a second component that are interconnected. The first component is located inside the cutter head and / or the cutter head transition structure, and the second component is located inside the main body.

[0007] The cooling channel includes an inlet and an outlet. The inlet is used to inject cooling medium into the cooling channel, and the outlet is used to discharge the cooling medium out of the cooling channel.

[0008] The main body and / or the blade tail are provided with one or more of the inlet portions, and the blade head and / or the blade head transition structure are provided with at least one of the outlet portions.

[0009] In one specific embodiment, the end of the blade away from the main body includes a blade tip, and the blade tip includes a rounded corner structure.

[0010] In one specific embodiment, the cross-section of the cutter head includes straight segments and / or curved segments; the number of straight segments is m, and the number of curved segments is n, where m≥0, n≥0, and m and n are both natural numbers.

[0011] In one specific embodiment, the cutter head transition structure includes a cutter neck, which is disposed between the cutter head and the main body; the cutter neck is provided with one or more lateral cooling channels, which are respectively connected to the discharge part and the cooling channel.

[0012] In one specific embodiment, the cross-sectional area of ​​the blade neck transitions along the direction from the blade tip to the main body.

[0013] In one specific embodiment, the discharge section includes a micro-slit structure disposed on the cutter head and / or the cutter head transition structure, and the micro-slit structure communicates with the cooling channel. Specifically, the micro-slit structure is disposed along the axial direction of the cutter head.

[0014] In one specific embodiment, the blade tail is provided with a threaded structure, and the ultrasonic surgical blade is connected to an external ultrasonic surgical blade handle through the threaded structure.

[0015] In one specific embodiment, the main body is provided with an auxiliary tightening structure; the auxiliary tightening structure is used to connect the ultrasonic surgical tool to the external ultrasonic surgical tool handle through the threaded structure after a preset torque is applied.

[0016] In one specific embodiment, the material of the blade head, and / or the main body, and / or the blade tail includes medical stainless steel and / or titanium alloy.

[0017] In one specific embodiment, the cooling channel includes one or more of the following: a cooling channel with a uniform cross-section, a cooling channel with a gradually changing cross-section, and a cooling channel with a stepped variable cross-section; and the cross-section of the cooling channel includes one or more of the following: circular, square, polygonal, and polygonal with rounded corners. When the cross-section of the cooling channel is circular, the cooling channel can be one or more of the following: a cooling channel with a uniform diameter, a cooling channel with a gradually changing diameter, and a cooling channel with a stepped variable diameter.

[0018] Beneficial effects: This application provides an ultrasonic surgical blade with cooling function. By setting a cooling channel inside the blade, the cooling medium can flow directly inside the surgical blade, and can fully exchange heat with various parts of the blade. This greatly increases the cooling area, improves the heat transfer efficiency, and can reduce the temperature of the blade more quickly and effectively, thus ensuring the thermal safety of the surgical operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is another schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 3 This is another schematic diagram of the three-dimensional structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the cooling channel structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the blade tip structure of this utility model;

[0025] Figure 6 This is another schematic diagram of the blade tip structure of this utility model;

[0026] Figure 7 This is another schematic diagram of the blade tip structure of this utility model.

[0027] The attached figures are labeled as follows: 1-cutter head; 1a-cutter tip; 1b-rounded corner structure; 2-cutter head transition structure; 2a-cooling channel; 3-main body; 3a-cooling channel; 4-cutter tail; 4a-entry part; 5-auxiliary tightening structure. Detailed Implementation

[0028] The following will describe the concept, specific structure and technical effects of this utility model clearly and completely with reference to the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of this utility model.

[0029] Various embodiments of the present invention will be described more fully below. The present invention may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present invention to the specific embodiments disclosed herein, but rather the present invention should be understood to cover all adjustments, equivalents, and / or alternatives falling within the spirit and scope of the various embodiments of the present invention.

[0030] In the following, the terms “comprising” or “may include”, which may be used in various embodiments of the present invention, indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of the present invention, the terms “comprising,” “having,” and their cognates are intended only to indicate a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or the possibility of adding one or more combinations of features, numbers, steps, operations, elements, components, or combinations of the foregoing.

[0031] In various embodiments of this utility model, the expression "or" or "at least one of A and / or B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A and / or B" may include A, may include B, or may include both A and B.

[0032] The terms used in the various embodiments of this utility model (such as "first," "second," etc.) may modify various constituent elements in the various embodiments, but do not limit the corresponding constituent elements. For example, the above terms do not limit the order and / or importance of the elements. The above terms are only used for the purpose of distinguishing one element from other elements. For example, a first user device and a second user device refer to different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of this utility model, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0033] It should be noted that, in this utility model, unless otherwise explicitly specified and defined, terms such as "installation," "connection," and "fixation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this utility model, those skilled in the art should understand that the terms indicating orientation or positional relationship in the text are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] The terminology used in the various embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the various embodiments of this invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this invention pertain. The terms (such as those defined in a generally used dictionary) are to be interpreted as having the same meaning as in the context of the relevant technical field and are not to be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this invention.

[0036] Example 1

[0037] This embodiment provides an ultrasonic surgical instrument with a cooling function. Cooling channels are incorporated within the instrument, allowing the cooling medium to flow directly within the instrument and exchange heat effectively with all parts of the instrument. This significantly increases the cooling area and improves heat transfer efficiency, enabling faster and more effective temperature reduction and ensuring thermal safety during surgery. It can adapt to various complex surgical scenarios, improving surgical flexibility and success rates. The specific solution is as follows:

[0038] An ultrasonic surgical instrument with cooling function includes a cutting head 1, a cutting head transition structure 2, a main body 3 and a cutting tail 4 connected in sequence; the ultrasonic surgical instrument has a cooling channel 3a inside.

[0039] The cooling channel 3a includes a first component and a second component that are interconnected. The first component is located inside the cutter head 1 and / or the cutter head transition structure 2, and the second component is located inside the main body 3. In some embodiments, the cutter head transition structure 2 includes a cutter neck. For example, as shown in the appendix to the specification... Figure 2 Included with instruction manual Figure 3 In the illustrated embodiment, the first component is located inside the cutter head 1 and the cutter head transition structure 2; as shown in the appendix to the specification. Figure 1 In the embodiment shown, the first component is located inside the cutter head transition structure 2.

[0040] The cooling channel 3a includes an inlet 4a and an outlet 4a. The inlet 4a is used to inject the cooling medium into the cooling channel 3a, and the outlet 4a is used to discharge the cooling medium out of the cooling channel 3a.

[0041] The main body and / or the blade tail 4 are provided with one or more inlet portions 4a; see the attached instruction manual. Figure 2 Included with instruction manual Figure 3 In the illustrated embodiment, the cutter head 1 is provided with at least one discharge section. (See attached specification) Figure 1In the embodiment shown, at least one discharge portion is provided on the neck of the blade transition structure 2.

[0042] This embodiment provides an ultrasonic bone scalpel for minimally invasive surgery on bone tissue, as shown in the instruction manual. Figure 1 -Instruction manual included Figure 3 As shown, it mainly consists of three key parts: the cutter head 1, the main body 3, and the cutter tail 4, which are connected in sequence. The connection between each part is firm, ensuring the overall stability of the cutter during use.

[0043] Furthermore, as per the instruction manual... Figure 4 As shown, the ultrasonic surgical instrument has an internal cooling channel 3a. Specifically, the cooling channel 3a includes a first component and a second component that are interconnected. (See attached instruction manual.) Figure 2 To the instruction manual Figure 4 In the embodiment shown, the first component extends into the interior of the cutter head 1 and acts directly on the working end of the cutter, effectively reducing the heat generated by ultrasonic vibration; the second component is located inside the main body 3 and serves as the main path for the flow of the cooling medium, ensuring that the cooling effect can be continuously and evenly transferred to the cutter head.

[0044] In the instruction manual Figure 1 In the embodiment shown, since the size of the cutter head 1 is relatively small, in order to ensure the structural strength of the cutter head, the first component is located inside the neck of the cutter head transition structure 2, and the cooling medium acts on the cutter head 1 through the discharge part provided on the neck.

[0045] In practical applications, to improve the cooling performance of surgical instruments and ensure that they maintain a stable operating temperature during prolonged surgery, cooling channels 3a can adopt diverse structural forms, ensuring both the structural strength of the surgical instrument and the cooling effect. Specifically, cooling channels 3a can include one or more of the following: cooling channels with a uniform cross-section, cooling channels with a gradually changing cross-section, and cooling channels with a stepped variable cross-section; and the cross-section of the cooling channel can include one or more of the following: circular, square, polygonal, and polygonal with rounded corners. In practical applications, a single structural form of cooling channel 3a can be flexibly selected, or multiple structural forms can be combined, depending on the specific structure of the surgical instrument, usage requirements, and cooling needs, to achieve the best cooling effect.

[0046] Furthermore, the cooling channel 3a also includes an inlet 4a and an outlet 4a. The inlet 4a is the entrance for the cooling medium to enter the cooling channel. Depending on actual needs, one or more inlets 4a can be provided on the main body 3 and / or the cutter tail 4 to flexibly adjust the flow rate and velocity of the cooling medium; while the outlet 4a is the exit for the cooling medium to leave the tool after completing the cooling task.

[0047] In the instruction manual Figure 2Included with instruction manual Figure 3 In the illustrated embodiment, a discharge section is provided on the cutter head 1, and at least one discharge section may be provided on the cutter head 1; specifically, as shown in the appendix to the specification... Figure 2 Included with instruction manual Figure 3 In the illustrated embodiment, the cutter head 1 has a flat structure, and the discharge section is designed as a narrow slit structure; preferably, the narrow slit structure is arranged along the axial direction of the cutter head 1. (See attached specification) Figure 1 In the illustrated embodiment, due to the size limitation of the cutter head 1, the discharge section is provided on the neck of the cutter head transition structure 2 adjacent to the cutter head 1, and at least one discharge section can be provided on the neck. Specifically, see the appendix to the specification. Figure 1 In the embodiment shown, the cutter head 1 has a cylindrical structure, and two symmetrical lateral discharge sections are provided on the cutter neck. The discharge sections are micropores. (This is in accordance with the appendix to the instruction manual.) Figure 1 In similar embodiments, the discharge section can be a micro-slit structure disposed on the cutter head transition structure 2.

[0048] In one specific embodiment, as shown in the appendix Figure 5 - Appendix Figure 7 As shown, the end of the cutter head 1 away from the main body 3 includes a tip 1a, and the tip 1a includes a rounded corner structure 1b.

[0049] The rounded design of the 1b structure, compared to sharp edges, allows for a smoother cut into or separation of tissues when in contact with human tissues. This avoids unnecessary damage to surrounding healthy soft tissues at the bone-soft tissue interface (such as the skull-dura mater interface), reducing the incidence of postoperative complications and improving operational safety.

[0050] In one specific embodiment, the cross-section of the cutter head 1 includes straight segments and / or curved segments; the number of straight segments is m, and the number of curved segments is n, where m≥0 and n≥0.

[0051] In practical applications, the cross-section of the cutter head 1 includes, but is not limited to, circles, triangles, squares, rectangles, and polygons (with ≥5 sides). For example, see the instruction manual attached... Figure 1 As shown, the cross-section of the cutter head 1 is circular, and the diameter of the cutter head 1 ranges from 20 μm to 4000 μm.

[0052] For example, the instruction manual includes Figure 2 Included with instruction manual Figure 3 As shown, the cross-section of the cutter head 1 is square, the thickness of the cutter head 1 ranges from 20 μm to 4000 μm, and the width of the cutter head 1 ranges from 20 μm to 40 mm.

[0053] Ultrasonic surgical blades with different blade cross-sectional shapes are mounted on an external ultrasonic surgical blade handle and can vibrate ultrasonically along their axis to cut bone tissue.

[0054] On the other hand, by applying a feed motion corresponding to the axis of the ultrasonic surgical instrument to the ultrasonic surgical instrument's tip, which is in a state of ultrasonic vibration, the tip of the ultrasonic surgical instrument is applied to the bone tissue to cause local damage and deformation of the bone tissue. This allows for the fabrication of an interventional channel on the bone tissue corresponding to the cross-section of the tip. For example, using the instructions attached... Figure 1 The ultrasonic surgical instrument shown has a circular cross-section tip and can create an interventional channel with a circular cross-section in bone tissue; refer to the instruction manual. Figure 2 and attached Figure 3 The ultrasonic surgical instrument shown, with a square or flat cross-section tip, can create interventional channels with square or rectangular cross-sections in bone tissue. Furthermore, using an ultrasonic surgical instrument with an irregularly shaped cross-section, interventional channels corresponding to the irregularly shaped cross-section can be created in bone tissue.

[0055] In one specific embodiment, the discharge section includes a micro-slit structure; preferably, the micro-slit structure is arranged along the axial direction of the cutter head 1, which facilitates processing while ensuring smooth flow of the cooling medium and sufficient contact area with the inside of the cutter, effectively improving the overall heat dissipation performance of the cutter; and the micro-slit structure is connected to the cooling channel 3a in the neck of the cutter head transition structure 2 and the main body 3.

[0056] Specifically, see the instruction manual. Figure 2 Included with instruction manual Figure 3 In the embodiment shown, for the cutter head 1 with a flat structure, a discharge part is provided on the cutter head 1, and at least one discharge part can be provided on the cutter head 1. In this case, a micro-slit structure is provided on the cutter head 1.

[0057] As per the instruction manual Figure 1 In the embodiment shown, the cutter head 1 is a cylindrical structure. Due to the size limitation of the cutter head 1, the discharge part is provided on the neck of the cutter head transition structure 2 adjacent to the cutter head 1. At least one discharge part can be provided on the neck. At this time, the discharge part can be a micro-hole structure or a micro-slit structure.

[0058] In one specific embodiment, the blade neck of the blade head transition structure 2 is also included. The blade neck is disposed between the blade head 1 and the main body 3. One or more lateral cooling channels 2a are provided on the blade neck, and the cooling channels 2a are respectively connected to the discharge part and the cooling channel 3a.

[0059] Furthermore, the ultrasonic surgical tool of this embodiment also includes a blade neck, on which at least one cooling channel 2a is formed; the cooling medium passes through the cooling channel 3a inside the main body 3 and is discharged through the cooling channel 2a, acting on the processing area of ​​the blade head and bone tissue.

[0060] In one specific embodiment, the cross-sectional area of ​​the cutter neck transitions along the direction from the cutter head 1 to the main body 3. This gradual change in the cross-sectional area of ​​the cutter neck avoids abrupt changes in cross-section, reduces stress concentration, and thus lowers the risk of cracks or fractures caused by stress concentration during cutting. Improved cutting stability and reduced vibration help reduce tool wear rate and extend tool life.

[0061] In one specific embodiment, the tail of the blade 4 is provided with a threaded structure, and the ultrasonic surgical blade is connected to the external ultrasonic surgical blade handle through the threaded structure.

[0062] In one specific embodiment, the main body 3 is provided with an auxiliary tightening structure 5; when a wrench is applied to the auxiliary tightening structure 5 and a preset torque is applied, the ultrasonic surgical blade is connected to the ultrasonic surgical blade handle through the threaded structure.

[0063] In practical applications, the auxiliary tightening structure 5 can be hexagonal, square, or other shapes that are easy for tools (such as wrenches) to hold and operate. Its core function is to enable the operator to more securely and conveniently install the ultrasonic surgical knife onto the external ultrasonic surgical knife handle after applying a preset torque to the auxiliary tightening structure 5.

[0064] In one specific embodiment, the blade head 1, and / or the main body 3, and / or the blade tail 4 are made of medical stainless steel and / or titanium alloy.

[0065] In this embodiment, the blade tip 1, blade neck, main body 3, and blade tail 4 are preferably made of medical-grade 316L stainless steel or medical-grade 316Lvm stainless steel. Medical-grade 316L stainless steel has excellent corrosion resistance. During surgery, the blade inevitably comes into contact with various bodily fluids such as blood and tissue fluid, which contain various chemical substances that can easily corrode the blade. 316L stainless steel, with its special chemical composition and microstructure, can effectively resist the erosion of these corrosive substances, ensuring that the blade maintains good performance and appearance during long-term use, avoiding damage or performance degradation due to corrosion, and thus ensuring the smooth progress of the surgery.

[0066] Medical-grade 316LVM stainless steel offers superior comprehensive protection. In ultrasonic surgery, surgical instruments vibrate at high frequencies and are in continuous contact with complex media such as blood, tissue fluid, and bone debris. Chloride ions, proteins, and acidic metabolites in these media can exacerbate metal corrosion and wear. 316LVM, through a vacuum melting process, reduces impurities to extremely low levels, forming a more stable passivation film that effectively blocks the penetration of corrosive substances. Simultaneously, its fatigue resistance is enhanced by 30%, resisting micro-stress fluctuations caused by ultrasonic vibration and avoiding the risk of instrument breakage due to material deterioration. Its excellent biocompatibility also reduces the irritation to tissues caused by metal ion release, ensuring the instrument maintains structural integrity and performance stability during long-term high-frequency use, thereby guaranteeing the precision and safety of ultrasonic surgery.

[0067] In one specific embodiment, the cooling channel 3a includes a cooling channel 3a with a uniform diameter, which ensures the stability and uniformity of the coolant flow in the channel; a cooling channel 3a with a gradually changing diameter, whose diameter gradually changes along the flow direction, which helps to regulate the flow rate and pressure distribution of the coolant; and a stepped variable diameter, which facilitates the processing of slender cooling channels by setting stepped sections of different diameters.

[0068] Furthermore, the cross-section of cooling channel 3a also includes diverse structures. It can be a standard circular cross-section, which facilitates processing while minimizing flow resistance; it can also be a square or polygonal cross-section, customized according to specific installation space and heat dissipation requirements; it can even be a polygonal cross-section with rounded corners, retaining the structural advantages of polygons while reducing stress concentration and improving the overall structural durability through rounded corner design. This diverse design allows cooling channel 3a to flexibly cope with various complex working conditions, ensuring the efficient and stable operation of ultrasonic surgical equipment.

[0069] This application provides an ultrasonic surgical blade with a cooling function. A cooling channel is set inside the blade, which allows the cooling medium to flow directly inside the surgical blade and fully exchange heat with various parts of the blade. This greatly increases the cooling area and improves the heat transfer efficiency, which can reduce the temperature of the blade more quickly and effectively. The coolant is discharged from the blade tip and acts on the bone tissue processing area, ensuring the thermal safety of the surgical operation.

[0070] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An ultrasonic surgical instrument with a cooling function, characterized in that, The ultrasonic surgical instrument includes a cutting head, a cutting head transition structure, a main body, and a cutting tail connected in sequence; the interior of the ultrasonic surgical instrument is provided with a cooling channel. The cooling channel includes a first component and a second component that are interconnected. The first component is located inside the cutter head and / or the cutter head transition structure, and the second component is located inside the main body. The cooling channel includes an inlet and an outlet. The inlet is used to inject cooling medium into the cooling channel, and the outlet is used to discharge the cooling medium out of the cooling channel. The main body and / or the blade tail are provided with one or more of the inlet portions, and the blade head and / or the blade head transition structure are provided with at least one of the outlet portions.

2. The ultrasonic surgical instrument with cooling function according to claim 1, characterized in that, The end of the blade away from the main body includes a blade tip, which has a rounded corner structure.

3. The ultrasonic surgical instrument with cooling function according to claim 1, characterized in that, The cross-section of the cutter head includes straight segments and / or curved segments; the number of straight segments is m, and the number of curved segments is n, where m≥0, n≥0, and m and n are both natural numbers.

4. The ultrasonic surgical instrument with cooling function according to claim 1, characterized in that, The discharge section includes a micro-slit structure, which is disposed on the cutter head and / or the cutter head transition structure, and the micro-slit structure is in communication with the cooling channel.

5. An ultrasonic surgical instrument with cooling function according to claim 1, characterized in that, The cutter head transition structure includes a cutter neck, which is disposed between the cutter head and the main body; the cutter neck is provided with one or more lateral cooling channels, which are respectively connected to the discharge part and the cooling channel.

6. An ultrasonic surgical instrument with cooling function according to claim 5, characterized in that, The cross-sectional area of ​​the blade neck transitions along the direction from the blade tip to the main body.

7. An ultrasonic surgical instrument with cooling function according to claim 1, characterized in that, The blade tail is provided with a threaded structure, and the ultrasonic surgical blade is connected to an external ultrasonic surgical blade handle through the threaded structure.

8. An ultrasonic surgical instrument with cooling function according to claim 7, characterized in that, The main body is provided with an auxiliary tightening structure; the auxiliary tightening structure is used to connect the ultrasonic surgical tool to the external ultrasonic surgical tool handle through the threaded structure after a preset torque is applied.

9. An ultrasonic surgical instrument with cooling function according to claim 1, characterized in that, The blade tip, and / or the main body, and / or the blade tail are made of medical-grade stainless steel and / or titanium alloy.

10. An ultrasonic surgical instrument with cooling function according to claim 1, characterized in that, The cooling channel includes one or more of the following: a cooling channel with a uniform cross-section, a cooling channel with a gradually changing cross-section, and a cooling channel with a stepped variable cross-section; and the cross-section of the cooling channel includes one or more of the following: a circle, a square, a polygon, and a polygon with rounded corners.

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