Torque wrench for ultrasonic knife

Abstract

The utility model provides a torque wrench for an ultrasonic knife. The torque wrench comprises a shell; the rotary core is provided with a mounting part for mounting the ultrasonic knife, a connecting position connected with the shell, and a first meshing part; the pressing piece is located in the shell; the meshing piece is located in the shell, the meshing piece is arranged between the rotating core and the pressing piece, an elastic piece is arranged between the first end of the meshing piece and the pressing piece, the second end of the meshing piece is provided with a second meshing part, and when the rotating core is located at the connecting position, the second meshing part and the first meshing part are arranged in a meshed mode; the problem that in the prior art, the torque control precision is low when the ultrasonic knife and the transduction handle are connected is solved.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and more specifically, to a torque wrench for an ultrasonic scalpel. Background Technology

[0002] Ultrasonic scalpels offer advantages such as precision, efficiency, reduced bleeding and tissue adhesion, shorter operation time, and no smoke production, making them widely used in various medical fields including general surgery, thoracic surgery, gynecology, and urology. Clinical use of an ultrasonic scalpel requires the use of a transducer handle, which must be connected and assembled before surgery. The ultrasonic scalpel and transducer handle are typically connected by threads. During assembly, the torque needs to be controlled within a specific range. Tightening too much may lead to reduced energy transfer efficiency, abnormal noise from the scalpel tip, and excessive impedance; overtightening may damage the connection between the scalpel tip and the transducer handle, affecting the lifespan of the transducer handle. Existing technologies typically use either a torque wrench or a rotating head and shaft at the scalpel tip to control the torque range. Current technologies use a latch between the rotating head and shaft, controlling the torque through the elasticity of the plastic. Torque wrenches have a similar structure, with a latch between the core and the outer shell, again controlling the torque through the elasticity of the plastic. However, due to the errors of each component and friction, the torque control range of the finished product has a relatively large error and is not precise enough, affecting the performance of the ultrasonic scalpel.

[0003] There is currently no effective solution to the aforementioned problems in the existing technology. Utility Model Content

[0004] The main objective of this invention is to provide a torque wrench for ultrasonic scalpels, so as to solve the problem of low torque control accuracy when connecting ultrasonic scalpels and transducer handles in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a torque wrench for an ultrasonic scalpel is provided, comprising: a housing; a rotating core having a mounting portion for mounting the ultrasonic scalpel, a connection position for connecting with the housing, and a first engaging portion; a clamping member located inside the housing; and an engaging member located inside the housing, disposed between the rotating core and the clamping member, wherein an elastic element is disposed between a first end of the engaging member and the clamping member, and a second end of the engaging member has a second engaging portion, wherein when the rotating core is in the connection position, the second engaging portion is engaged with the first engaging portion; wherein the clamping member is movably disposed relative to the housing along a first direction, so that the clamping member can adjust the elastic force of the elastic element on the engaging member, thereby adjusting the frictional force at the engagement point between the engaging member and the rotating core.

[0006] Furthermore, at least one of the first meshing part and the second meshing part is a ratchet structure, and the cross-sectional shape of the ratchet structure along the tooth height direction is a right trapezoid.

[0007] Furthermore, the outer shell has a shaft hole, the spindle has a cutter head connecting sleeve end, the cutter head connecting sleeve end forms a mounting part, the spindle has a guide sleeve end, and a fixed meshing disc is also provided between the cutter head connecting sleeve end and the guide sleeve end. A first meshing part is provided on the side of the fixed meshing disc facing the guide sleeve end. When the spindle is in the connected position, the guide sleeve end is located inside the shaft hole, and the clamping part and the meshing part are both located on the outer side of the guide sleeve end along its own radial direction.

[0008] Furthermore, the outer casing has a retaining clip, which is used to axially limit the spindle when it is in the connected position.

[0009] Furthermore, the rotating core has a shaft hole, and the clamping member and the engaging member are both located in the shaft hole. Multiple grooves are formed on the inner sidewall of the shaft hole. The multiple grooves are spaced apart along the circumference of the rotating core. Each groove extends along a first direction. The engaging member is provided with a first protrusion, and the clamping member is provided with a second protrusion. The first protrusion and the second protrusion are both located in the grooves, so that the clamping member and the engaging member are movably arranged relative to the outer shell along the first direction.

[0010] Furthermore, the first direction is the axial direction of the shaft hole.

[0011] Furthermore, the meshing component includes a movable toothed disc, a second meshing portion is provided on the side of the movable toothed disc facing the clamping component, a first protrusion is provided on the edge of the movable toothed disc along its own radial direction, a first mounting hole is provided on the inner side of the movable toothed disc, a portion of the guide sleeve end passes through the first mounting hole, and the side of the movable toothed disc away from the second meshing portion abuts against the elastic component.

[0012] Furthermore, the clamping element includes a flange and a threaded sleeve connected to the flange. The side of the flange away from the threaded sleeve abuts against the elastic element. The edge of the flange protrudes radially with a second protrusion. The flange has a second mounting hole inside. Part of the guide sleeve end passes through the second mounting hole. The threaded sleeve has an internal thread inside.

[0013] Furthermore, the torque wrench for ultrasonic scalpel also includes a torque adjusting head located inside the shaft hole. One end of the torque adjusting head has a threaded post that engages with an internal thread. The other end of the torque adjusting head has an adjusting part that can be operated to adjust the engagement depth between the threaded post and the internal thread, thereby adjusting the distance the elastic element is compressed.

[0014] Furthermore, the housing is provided with a viewing window, and one side of the viewing window has an indicator line. When the end face of the clamping member away from the engaging member is aligned with the indicator line, the clamping member is located at the target position.

[0015] By applying the technical solution of this utility model, the clamping member is movably arranged relative to the outer shell along the first direction, so that the elastic force of the clamping member on the meshing member can be adjusted, thereby adjusting the friction force at the meshing point between the meshing member and the rotating core, thereby making the torque transmitted between the meshing member and the rotating core precisely controllable, and ensuring that the torque between the ultrasonic scalpel and the transducer handle is controllable. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the overall structure of an embodiment of the torque wrench according to the present invention is shown;

[0018] Figure 2 A cross-sectional schematic diagram of an embodiment of a torque wrench according to the present invention is shown;

[0019] Figure 3 An exploded view of an embodiment of the torque wrench according to the present invention is shown;

[0020] Figure 4 A schematic diagram of an embodiment of the spinneret according to the present invention is shown;

[0021] Figure 5 A schematic diagram of the structure of a first embodiment of the meshing member according to the present invention is shown;

[0022] Figure 6 A schematic diagram of the structure of a second embodiment of the meshing member according to the present invention is shown;

[0023] Figure 7 A schematic diagram of the fit of embodiments of the rotating core and the meshing member in different meshing states according to the present invention is shown;

[0024] Figure 8 A structural schematic diagram of an embodiment of the clamping member according to the present invention is shown;

[0025] Figure 9 A schematic diagram of an embodiment of the torque adjusting head according to the present invention is shown;

[0026] Figure 10 A structural schematic diagram of an embodiment of the housing according to the present invention is shown;

[0027] Figure 11 A schematic diagram of a partial embodiment of the present invention at the window is shown.

[0028] The above figures include the following reference numerals:

[0029] 1. Rotary core; 11. Cutter head connecting sleeve end; 12. Guide sleeve end; 13. Fixed meshing disc; 131. First meshing part;

[0030] 2. Engaging component; 21. Movable gear disc; 211. Second engagement part; 22. First protrusion;

[0031] 3. Elastic components;

[0032] 4. Clamping element; 41. Flange; 411. Second protrusion; 42. Threaded sleeve;

[0033] 5. Torque adjusting head; 51. Threaded post; 52. Adjusting part;

[0034] 6. Outer shell; 61. Shaft hole; 62. Groove; 63. Fixing buckle; 64. Viewing window; 641. Indicator line; 65. Viewing window cover. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0039] The ultrasonic scalpel and the transducer handle work together in a mechanical and electronic manner to achieve the cutting and coagulation functions of the ultrasonic scalpel. The transducer handle, also known as the transducer or ultrasonic drive handle, is one of the key components of the ultrasonic scalpel system. Its main function is to convert electrical energy into mechanical energy, specifically, to convert high-frequency electrical signals into high-frequency mechanical vibrations.

[0040] In an ultrasonic scalpel system, the transducer handle connects the ultrasonic scalpel head to the control unit. When the control unit emits a high-frequency electrical signal (typically around 55,500 Hz), the piezoelectric ceramic element in the transducer handle responds to this signal and generates high-frequency vibrations. This vibration is transmitted along the transducer handle to the ultrasonic scalpel head, causing the head to vibrate at an extremely high frequency, thereby generating heat upon contact with tissue, achieving tissue cutting and coagulation. This cutting and coagulation process, using high-frequency vibration instead of a traditional cutting blade, reduces bleeding and smoke during surgery, while also minimizing damage to surrounding tissues.

[0041] To ensure effective energy transfer between the ultrasonic scalpel and the transducer handle, a threaded connection is typically used, requiring precise torque control. If the torque is too loose, the connection may become unstable, leading to decreased energy transfer efficiency and affecting surgical outcomes; if the torque is too tight, it may damage the scalpel tip or the transducer handle connection, shortening the device's lifespan. Therefore, using a torque-adjustable wrench to ensure proper connection tightness is crucial.

[0042] Combination Figures 1 to 11As shown in the specific embodiment of this application, a torque wrench for an ultrasonic scalpel is provided, comprising: a housing 6; a rotating core 1, the rotating core 1 having a mounting portion for mounting the ultrasonic scalpel, the rotating core 1 having a connection position connected to the housing 6, and the rotating core 1 having a first engaging portion 131; a clamping member 4, the clamping member 4 being located inside the housing 6; and an engaging member 2, the engaging member 2 being located inside the housing 6, the engaging member 2 being disposed between the rotating core 1 and the clamping member 4, an elastic member 3 being disposed between the first end of the engaging member 2 and the clamping member 4, and the second end of the engaging member 2 having a second engaging portion 211, wherein when the rotating core 1 is in the connection position, the second engaging portion 211 is engaged with the first engaging portion 131; wherein the clamping member 4 is movably disposed relative to the housing 6 along a first direction, so that the clamping member 4 can adjust the elastic force of the elastic member 3 on the engaging member 2, thereby adjusting the frictional force at the engagement point between the engaging member 2 and the rotating core 1.

[0043] By applying the technical solution of this utility model, the clamping member 4 is movably arranged relative to the outer shell 6 along the first direction, so that the clamping member 4 can adjust the elastic force of the elastic member 3 on the meshing member 2, thereby adjusting the friction force at the meshing point between the meshing member 2 and the rotating core 1, thereby making the torque transmitted between the meshing member 2 and the rotating core 1 precise and controllable, and ensuring that the torque between the ultrasonic scalpel and the transducer handle is controllable.

[0044] The tightening force of the ultrasonic scalpel head onto the transducer shank is adjusted using a torque-adjustable torque wrench. This torque wrench design allows users to set and control a specific torque value as needed, ensuring that the connection between the ultrasonic scalpel head and the transducer shank is both secure and not overtightened, avoiding risks caused by improper connection, such as reduced energy transfer efficiency, damage to the scalpel head or transducer shank, etc.

[0045] Traditional torque control methods may rely on fixed torque wrench settings or manual tightening, which often makes it difficult to achieve very precise torque control. However, the torque-adjustable torque wrench, through its design, allows users to fine-tune the torque within a certain range to adapt to different surgical needs and instrument characteristics, thereby achieving refined management of the connection torque between the ultrasonic scalpel and the transducer handle.

[0046] This design allows the torque wrench to provide stable torque control during the installation and removal of the ultrasonic scalpel, preventing damage to the scalpel head or insecure installation due to excessive or insufficient torque. It is suitable for the precision assembly of medical equipment. In the operating room, the ultrasonic scalpel is used frequently and requires rapid head replacement in different surgeries. This torque wrench design ensures consistent torque during head replacement, preventing medical accidents caused by improper operation and improving surgical efficiency and safety.

[0047] Furthermore, at least one of the first meshing part 131 and the second meshing part 211 is a ratchet structure, and the cross-sectional shape of the ratchet structure along the tooth height direction is a right trapezoid.

[0048] The ratchet structure has a right-angled trapezoidal cross-section along the tooth height. This ratchet structure not only ensures a stable connection between the screw core 1 and the engaging part 2, but also produces a distinct "click" sound when the torque reaches the set value, alerting the operator that the torque has been reached and preventing over-tightening or under-tightening. This torque wrench's ratchet design, through the "click" feedback mechanism, effectively helps the operator determine whether the torque has reached the set value, reducing component damage or connection failure caused by improper torque.

[0049] Furthermore, the outer shell 6 has a shaft hole 61, the rotating core 1 has a blade connecting sleeve end 11 forming a mounting part, the rotating core 1 has a guide sleeve end 12, and a fixed toothed disc 13 is provided between the blade connecting sleeve end 11 and the guide sleeve end 12. The fixed toothed disc 13 has a first engagement part 131 on the side facing the guide sleeve end 12. When the rotating core 1 is in the connected position, the guide sleeve end 12 is located inside the shaft hole 61, and the clamping member 4 and the engagement member 2 are both located on the outer side of the guide sleeve end 12 along its own radial direction. This structural design ensures that the torque wrench is compact and portable while also ensuring its stability and reliability under high torque output. Especially in operating room environments where frequent replacement of ultrasonic blades is required, operators can quickly and accurately complete the installation and removal of blades, avoiding the extended operation time caused by equipment replacement, effectively improving the continuity of surgery and the patient's treatment experience.

[0050] Furthermore, the outer casing 6 has a fixing buckle 63, which is used to axially limit the spindle 1 when the spindle 1 is in the connected position.

[0051] The introduction of the retaining clip 63 provides additional axial support for the spindle. It prevents axial movement of the spindle due to prolonged use or accidental impact, avoids deviations in torque output, and ensures consistent and reliable assembly quality.

[0052] Furthermore, the rotating core 1 has a shaft hole 61, and the clamping member 4 and the engaging member 2 are both located in the shaft hole 61. A plurality of grooves 62 are formed on the inner sidewall of the shaft hole 61. The plurality of grooves 62 are spaced apart along the circumference of the rotating core 1. Each groove 62 extends along a first direction. The engaging member 2 is provided with a first protrusion 22, and the clamping member 4 is provided with a second protrusion 411. The first protrusion 22 and the second protrusion 411 are both located in the grooves 62, so that the clamping member 4 and the engaging member 2 are movably arranged relative to the outer shell 6 along the first direction.

[0053] Furthermore, the first direction is the axial direction of the shaft hole 61. This adjustment method, which is directly along the axial direction, can more effectively control the accuracy of torque output, thereby ensuring the tightness of assembled components and the overall performance of the equipment.

[0054] Furthermore, the meshing member 2 includes a movable toothed disc 21, on the side of the movable toothed disc 21 facing the clamping member 4, a second meshing part 211 is provided, the edge of the movable toothed disc 21 is provided with a first protrusion 22 protruding radially, the inner side of the movable toothed disc 21 has a first mounting hole, a portion of the guide sleeve end 12 passes through the first mounting hole, and the side of the movable toothed disc 21 away from the second meshing part 211 abuts against the elastic member.

[0055] Furthermore, the clamping component 4 includes a flange 41 and a threaded sleeve 42 connected to the flange 41. The side of the flange 41 facing away from the threaded sleeve 42 abuts against the elastic element 3. A second protrusion 411 is provided on the edge of the flange 41 protruding radially. The flange 41 has a second mounting hole inside, and part of the guide sleeve end 12 passes through the second mounting hole. The threaded sleeve 42 has internal threads inside. The combined design of the flange 41 and the threaded sleeve 42 not only provides stable support for the clamping component 4, but also achieves precise control of the pressure on the elastic element 3 through the adjustment of the internal threads.

[0056] Furthermore, the ultrasonic scalpel torque wrench also includes a torque adjusting head 5, which is located inside the shaft hole. One end of the torque adjusting head 5 has a threaded post 51 that engages with an internal thread. The other end of the torque adjusting head 5 has an adjusting part 52. By operating the adjusting part 52, the engagement depth between the threaded post 51 and the internal thread can be adjusted to adjust the distance by which the elastic element 3 is compressed.

[0057] Furthermore, a viewing window 64 is provided on the housing 6, and an indicator line 641 is provided on one side of the viewing window 64. When the end face of the clamping member 4 away from the engaging member 2 is aligned with the indicator line 641, the clamping member 4 is located at the target position. Figure 3 The image also shows a window cover 65.

[0058] The outer casing 6 serves as the base of the entire machine and has a shaft hole 61 on it. The axial direction of the shaft hole 61 is defined as the first direction, which is the direction of the position adjustment and force application of all components in the torque wrench. The outer casing 6 also has a fixing buckle 63 for axially limiting the rotating core 1 to prevent unnecessary axial displacement of the rotating core 1 during use, which would affect the torque transmission. A viewing window 64 is set on the outer casing 6, with an indicator line 641 on one side for visually displaying the alignment of the clamping part 4 relative to the target position, facilitating the operator to adjust the torque. The rotating core 1 is the core transmission component of the torque wrench. One end is a cutter head connecting sleeve end 11 for mounting an ultrasonic cutter head, and the other end is a guide sleeve end 12. The guide sleeve end 12 passes through the shaft hole 61 of the outer casing 6 and cooperates with multiple grooves 62 on the inner side wall of the shaft hole 61. The grooves 62 extend along the first direction, ensuring the stability and guiding effect of the rotating core 1 in the first direction in the torque wrench. A fixed meshing disk 13 is provided in the middle of the rotating core 1. The fixed meshing disk 13 has a first meshing part 131 on the side facing the guide sleeve end 12. The first meshing part 131 cooperates with the second meshing part 211 of the meshing member 2 to realize torque transmission.

[0059] The clamping component 4 includes a flange 41 and a threaded sleeve 42. The flange 41 has a second protrusion 411 on its edge, and the side of the flange 41 facing away from the threaded sleeve 42 abuts against the elastic component 3. The internal thread of the threaded sleeve 42 engages with the threaded post 51 of the torque adjusting head 5. The other end of the torque adjusting head 5 is an adjusting part 52. The operator rotates the adjusting part 52 to change the engagement depth between the threaded post 51 and the internal thread, thereby adjusting the compression of the elastic component 3. The engaging component 2 is a movable toothed disc 21, with a second engaging part 211 on its side facing the clamping component 4, which engages with the first engaging part 131 of the rotating core 1. The edge of the movable toothed disc 21 has a first protrusion 22. Both the first protrusion 22 and the second protrusion 411 are located within the groove 62 of the shaft hole 61 of the rotating core 1. This structural design ensures that the clamping component 4 and the engaging component 2 can move stably relative to the outer casing 6 along a first direction, adjusting the friction between the rotating core 1 and the engaging component 2, i.e., the torque output value.

[0060] By using a friction adjustment mechanism, the torque wrench can precisely control torque output without altering its structure, meeting different torque requirements. When the clamping element 4 is aligned with the indicator line 641, it means that the clamping element 4 is in the target position, and the torque output value at this time is the preset value. Users can adjust the position of the clamping element 4 according to actual needs, thereby changing the torque output value.

[0061] The torque adjusting head 5 engages with the threaded sleeve 42 of the clamping member 4 via a threaded post 51 at one end. Rotation of the threaded post 51 causes relative displacement between it and the threaded sleeve 42. This displacement translates into movement of the clamping member 4 in the first direction, thus affecting the degree of compression of the elastic member 3. The adjusting part 52 is designed for easy rotation by the operator and can be equipped with a torque value indicator, allowing the operator to intuitively understand the current torque output value and facilitate precise control.

[0062] The elastic element 3 can be a spring or other elastic component, its function being to provide pressure between the clamping element 4 and the movable toothed disc 21, thereby affecting the frictional force. The design of the elastic element 3 can take into account its elastic coefficient to accommodate different torque adjustment requirements. The length and diameter range of the elastic element 3 can be selected according to the specific size and torque adjustment range of the torque wrench to ensure that it can stably transmit pressure during compression and release.

[0063] The ratchet structure is an optional embodiment of the first meshing part 131 and the second meshing part 211, and its cross-sectional shape along the tooth height direction is a right trapezoid. This geometric design can ensure a stable meshing between the rotating core 1 and the movable meshing disk 21, and can maintain good friction even during high-intensity torque transmission, avoiding slippage and improving the reliability and accuracy of torque transmission.

[0064] In an optional embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a torque-adjustable torque wrench, which consists of a rotating core 1, a meshing component 2, a spring, a clamping component 4, a torque adjusting head 5, and a housing 6.

[0065] like Figure 4 As shown, the rotary core 1 is provided with a cutter head connecting sleeve end 11, a guide sleeve end 12, and a fixed toothed disc 13. The cutter head connecting sleeve end 11 mates with the mounting part of the ultrasonic cutter head; the guide sleeve end 12 is placed in the outer shell and mates with the meshing part 2 and the clamping part 4; the fixed toothed disc 13 mates with the meshing part 2, and the disc surface is provided with first ratchet teeth, which are evenly distributed around the circumference and have a cross-sectional shape of a right trapezoid.

[0066] like Figure 5 and Figure 6 As shown, the meshing component 2 has a movable toothed disc 21 and a first protrusion 22. The toothed component has a central hole that can fit onto the rotating core 1, ensuring its movement along the axis. The movable toothed disc 21 has second ratchet teeth on its surface, and it meshes with the fixed toothed disc 13 of the rotating core 1. Figure 6As shown, as the meshing member 2 rotates, the first and second ratchet teeth move relative to each other. When the meshing member 2 rotates, the inclined surfaces of the first and second ratchet teeth contact each other, and the two inclined surfaces interact, starting to drive the rotating core to rotate the ultrasonic scalpel. As the meshing member 2 continues to rotate, the first and second ratchet teeth begin to slide, the spring gradually compresses, and the torque increases accordingly. When the torque value reaches its maximum, the top surfaces of the first and second ratchet teeth begin to contact, and the torque is released. Subsequently, the first ratchet tooth passes over the second ratchet tooth, the compressed spring is released instantaneously, and the second ratchet tooth collides with the fixed meshing disc 13, producing a "click" sound, which can be used to determine that it has been installed in place. The first and second ratchet teeth are evenly distributed circumferentially, making torque control more stable.

[0067] like Figure 8 As shown, the clamping element 4 is placed inside the housing 6, with a flange 41 at one end and a threaded sleeve 42 at the other end. A second protrusion 411 is provided on the outer side of the flange, which mates with a groove 62 on the housing; the threaded sleeve 42 is placed in the shaft hole 61 of the housing, and its internal thread connects to the threaded post 51 of the torque adjusting head 5. The clamping element 4 can move up and down, thereby compressing the spring to varying degrees.

[0068] like Figure 9 As shown, the torque adjusting head 5 includes a threaded post 51 and an adjusting part 52, and is cylindrical in shape, placed in the shaft hole 61 of the outer shell. The threaded post 51 is connected to the threaded sleeve 42 of the clamping member 4; the adjusting part 52 can be rotated by inserting a specific tool, and the clamping member can be moved up and down by rotating the adjusting part 52.

[0069] like Figure 10 , Figure 11 As shown, the housing includes a shaft hole 61, a groove 62, and a fixing buckle 63. The clamping member 4 and the torque adjusting head 5 are placed in the shaft hole 61, restricting their axial movement; the groove 62 cooperates with the first protrusion 22 and the second protrusion 411, providing a guiding function and restricting the rotation of the clamping member 4 and the engaging member 2; the fixing buckle 63 is located on the inner side of the bottom of the housing and is used to fix the position of the rotating core 1. The housing also has a viewing window 64 and a viewing window cover 65. An indicator line 641 is provided at the viewing window 64, and the viewing window cover 65 can be placed over the viewing window. When the end face of the clamping member 4 is aligned with the indicator line 641, this is the theoretical reference value of the torque; fine adjustments can be made based on this value for convenient, quick, and precise torque adjustment. Finally, the viewing window cover 65 is tightened.

[0070] This application also provides a method for installing an adjustable torque wrench. This method is suitable for mounting an ultrasonic scalpel head onto a transducer handle, ensuring precise control of the connection torque to achieve optimal surgical results and instrument lifespan. The specific steps are as follows:

[0071] Step 1: Preparation.

[0072] Ensure that the torque-adjustable torque wrench is in the unset state.

[0073] Prepare the ultrasonic scalpel head and transducer handle to be installed.

[0074] Clean the connection surfaces of the ultrasonic scalpel head and transducer handle to prevent dust or grease from interfering with the installation process.

[0075] Step 2: Set the torque.

[0076] Rotate the torque adjustment head 5 until the indicator line 641 of the window 64 is aligned, at which point the preset theoretical torque reference value is reached.

[0077] As needed, slightly rotate the torque adjustment head 5, observe the indicator line 641 in the viewing window 64, and fine-tune to the desired torque value.

[0078] After confirming the settings, press the window cover 65 firmly to lock the position of the torque adjustment head 5.

[0079] Step 3: Assemble the ultrasonic scalpel head into the rotating core.

[0080] Align the mounting part of the ultrasonic scalpel head with the scalpel head connecting sleeve end 11 of the rotating core 1 for preliminary docking.

[0081] Gently rotate the ultrasonic scalpel head to ensure it is tightly connected to the rotating core 1.

[0082] Step 4: Start the torque adjustable torque wrench.

[0083] Insert the guide sleeve end 12 of the spindle 1 into the shaft hole 61 of the housing 6 to ensure that the fixed gear disk 13 of the spindle 1 and the movable gear disk 21 of the meshing member 2 are in a meshing preparation state.

[0084] Ensure that the connection between the clamping part 4 and the torque adjusting head 5 is secure.

[0085] Step 5: Adjust and tighten the connection.

[0086] Start rotating the torque adjustment head, and adjust the compression of the spring by moving the clamping part 4 up and down, thereby changing the magnitude of the friction between the rotating core 1 and the meshing part 2.

[0087] When the torque reaches the set value, the ratchet teeth (first ratchet and second ratchet) of the rotating core 1 and the meshing part 2 move relative to each other, the spring begins to compress, and the torque increases until the torque value reaches the maximum set value.

[0088] Once the torque reaches its maximum value, the top surfaces of the first and second ratchet teeth come into contact, producing a "click" sound, indicating that the torque has reached the set value. At this point, rotation stops to avoid over-tightening.

[0089] Step 6: Check connection stability.

[0090] Gently try rotating the ultrasonic scalpel head to confirm that its connection with the transducer handle is secure and not loose.

[0091] After confirming that everything is correct, the entire installation process is complete.

[0092] Precautions: During installation, avoid violent impacts to the ultrasonic scalpel head and transducer handle to prevent damage. When adjusting the torque, increase it gradually to avoid applying excessive force suddenly, which could lead to inaccurate settings.

[0093] Regularly check the working condition of the adjustable torque wrench to ensure its accuracy and reliability. By following these steps, you can effectively use the adjustable torque wrench to precisely adjust the connection torque between the ultrasonic scalpel head and the transducer handle, ensuring the safety of surgical procedures and extending the instrument's lifespan.

[0094] The transducer handle, part of the outer shell, is a crucial component of the ultrasonic scalpel system. It not only connects to the ultrasonic scalpel head but also incorporates numerous technologies and components to ensure the system's proper operation and safety. The following are some components that may be included in the transducer handle: 1. Piezoelectric ceramic transducer: This is the core component of the transducer handle, used to convert high-frequency electrical pulses from the control unit into mechanical vibrations. The piezoelectric ceramic material vibrates under the influence of an electric field, and this vibration is the basis for the ultrasonic scalpel's cutting and coagulation of tissue. 2. Vibration transmission rod: Connecting the piezoelectric ceramic transducer and the ultrasonic scalpel head, it effectively transmits the vibrations generated by the transducer to the scalpel head, ensuring that the vibration mode and amplitude of the scalpel head meet surgical requirements. 3. Control circuitry: The transducer handle may contain electronic circuitry for monitoring and controlling the scalpel head's operating status, such as temperature and amplitude, to ensure the ultrasonic scalpel operates within safe parameters. 4. Trigger device: Usually a button or switch located on the handle portion of the transducer handle, operated by the surgeon to start and stop the ultrasonic scalpel's vibration. 5. Cooling System: May include coolant channels or heat sinks to cool the transducer handle and blade during surgery, preventing overheating. 6. Connector: Used to connect to the control unit, transmitting electrical power and control signals. 7. Handle: Provides an easy-to-grip structure for the surgeon to operate the transducer handle. 8. Protective Shell or Housing: Encloses the internal components of the transducer handle, providing physical protection, and may also contain graduations or indicators for operation. 9. Feedback Sensors: Such as temperature sensors and impedance sensors, used to monitor the blade's operating status and provide feedback to the control unit for automatic power adjustment. 10. Mechanical Locking Mechanism: In some designs, may include a mechanical device to secure the blade, ensuring it does not loosen during surgery.

[0095] These components work together to enable the transducer to safely and effectively convert electrical energy into mechanical vibrations and transmit them to the ultrasonic scalpel head, achieving precise tissue cutting and coagulation. The design and manufacture of the transducer require strict control over the precision and fit of each component to ensure the stability and safety of the system.

[0096] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0097] The torque can be adjusted by rotating the torque adjustment head to move the clamping part up and down, thereby adjusting the spring compression and the friction between the meshing part and the rotating core. Compared with traditional torque control methods, this method allows for more precise control of the torque range and avoids risks associated with connection issues between the ultrasonic scalpel and the transducer handle.

[0098] The above embodiments can also be used in the field of medical device technology. That is, according to another aspect of the present invention, an ultrasonic therapy system is provided, which includes a torque wrench, the torque wrench being the torque wrench in the above embodiments.

[0099] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0100] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0101] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0102] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A torque wrench for an ultrasonic scalpel, characterized in that, include: Outer shell (6); The rotating core (1) has a mounting part for mounting an ultrasonic scalpel, the rotating core (1) has a connection position for connecting with the outer shell (6), and the rotating core (1) has a first engagement part (131); A clamping element (4) is located inside the outer casing (6); Engaging member (2), the engaging member (2) is located inside the outer shell (6), the engaging member (2) is disposed between the rotating core (1) and the clamping member (4), an elastic member (3) is disposed between the first end of the engaging member (2) and the clamping member (4), the second end of the engaging member (2) has a second engaging part (211), when the rotating core (1) is located in the connection position, the second engaging part (211) is engaged with the first engaging part (131); The clamping member (4) is movably disposed relative to the outer shell (6) along a first direction, so that the clamping member (4) can adjust the elastic force of the elastic member (3) on the engaging member (2), thereby adjusting the friction force at the engagement point between the engaging member (2) and the rotating core (1).

2. The torque wrench for ultrasonic scalpel according to claim 1, characterized in that, At least one of the first meshing part (131) and the second meshing part (211) is a ratchet structure, and the cross-sectional shape of the ratchet structure along the tooth height direction is a right trapezoid.

3. The torque wrench for ultrasonic scalpel according to claim 1, characterized in that, The outer shell (6) has a shaft hole (61), the spindle (1) has a cutter head connecting sleeve end (11), the cutter head connecting sleeve end (11) forms the mounting part, the spindle (1) has a guide sleeve end (12), and a fixed meshing disc (13) is provided between the cutter head connecting sleeve end (11) and the guide sleeve end (12). The fixed meshing disc (13) is provided with the first meshing part (131) on the side facing the guide sleeve end (12). When the spindle (1) is in the connection position, the guide sleeve end (12) is located in the shaft hole (61), and the clamping member (4) and the meshing member (2) are both located on the outer side of the guide sleeve end (12) along its own radial direction.

4. The torque wrench for ultrasonic scalpel according to claim 1, characterized in that, The outer shell (6) has a fixing buckle (63), and when the spindle (1) is in the connection position, the fixing buckle (63) is used to axially limit the spindle (1).

5. The torque wrench for an ultrasonic scalpel according to claim 3, characterized in that, The spindle (1) has a shaft hole (61), and the clamping member (4) and the engaging member (2) are both located in the shaft hole (61). A plurality of grooves (62) are formed on the inner sidewall of the shaft hole (61). The plurality of grooves (62) are arranged circumferentially along the spindle (1), and each groove (62) extends along the first direction. The engaging member (2) is provided with a first protrusion (22), and the clamping member (4) is provided with a second protrusion (411). The first protrusion (22) and the second protrusion (411) are both located in the grooves (62) so that the clamping member (4) and the engaging member (2) are movably arranged relative to the outer shell (6) along the first direction.

6. The torque wrench for an ultrasonic scalpel according to claim 5, characterized in that, The first direction is the axial direction of the shaft hole (61).

7. The torque wrench for an ultrasonic scalpel according to claim 5, characterized in that, The meshing member (2) includes a movable toothed disc (21), on the side of the movable toothed disc (21) facing the clamping member (4) a second meshing part (211) is provided, the edge of the movable toothed disc (21) is provided with a first protrusion (22) protruding radially, the inner side of the movable toothed disc (21) has a first mounting hole, part of the guide sleeve end (12) passes through the first mounting hole, and the side of the movable toothed disc (21) away from the second meshing part (211) abuts against the elastic member (3).

8. The torque wrench for an ultrasonic scalpel according to claim 5, characterized in that, The clamping member (4) includes a flange (41) and a threaded sleeve (42) connected to the flange (41). The side of the flange (41) away from the threaded sleeve (42) abuts against the elastic member (3). The edge of the flange (41) is provided with a second protrusion (411) protruding radially. The flange (41) has a second mounting hole inside. Part of the guide sleeve end (12) passes through the second mounting hole. The threaded sleeve (42) has an internal thread inside.

9. The torque wrench for an ultrasonic scalpel according to claim 8, characterized in that, The ultrasonic scalpel torque wrench also includes a torque adjusting head (5), which is located inside the shaft hole (61). One end of the torque adjusting head (5) has a threaded post (51) that engages with the internal thread. The other end of the torque adjusting head (5) has an adjusting part (52). By operating the adjusting part (52), the engagement depth between the threaded post (51) and the internal thread can be adjusted to adjust the distance by which the elastic element (3) is compressed.

10. The torque wrench for an ultrasonic scalpel according to claim 1, characterized in that, The housing (6) is provided with a viewing window (64), and one side of the viewing window (64) has an indicator line (641). When the end face of the clamping member (4) away from the engaging member (2) is aligned with the indicator line (641), the clamping member (4) is located at the target position.

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