Fastening device and ultrasonic surgical instrument

Abstract

The present application relates to a kind of fastening device and ultrasonic surgical instrument.The fastening device is used to connect ultrasonic energy transmission component and ultrasonic transducer, and the fastening device includes torque connection structure, including torque connection seat, the torque connection seat has mounting hole, the mounting hole can be passed through the ultrasonic energy transmission component, and the ultrasonic energy transmission component is fixedly connected to the torque connection seat;Multiple deformation components are arranged in the torque connection seat;Force structure is connected with the deformation component;And indication structure is separately arranged in the torque connection seat and the force structure, for indicating the torque size applied when fastening.At the same time when realizing the connection of ultrasonic energy transmission component and ultrasonic transducer, avoid that fastening force is too large or too small, while indicating the force applied to force structure in real time, reduce the risk of functional failure, facilitate medical staff use.

Description

Technical Field

[0001] This invention relates to the field of fastening equipment technology, and in particular to a fastening device and an ultrasonic surgical instrument. Background Technology

[0002] Typically, in ultrasonic surgical instruments, the ultrasonic energy transmission component (or instrument working end) and the ultrasonic transducer are detachable to maximize the lifespan of each major component, thereby reducing instrument operating costs. The installation between the ultrasonic energy transmission component and the ultrasonic transducer usually requires a certain range of tightening force. If the actual tightening force exceeds or falls below the target range, the instrument will not function as intended or may be damaged.

[0003] Currently, specialized torque wrenches are commonly used to tighten components. These torque wrenches typically consist of multiple structures and components, primarily including a force-applying structure, an elastic deformation structure, an over-limit sliding structure, and a torque transmission structure. In use, the user first connects the torque transmission structure and the ultrasonic energy transmission component. Then, the user applies force or torque to the force-applying structure, causing deformation of the elastic deformation structure. When the force or torque exceeds a certain limit, the deformation of the elastic deformation structure causes the over-limit sliding structure to slide, resulting in relative movement between the force-applying structure and the torque transmission structure, thereby preventing the tightening force from exceeding the target range.

[0004] The torque wrench mentioned above requires the relative sliding of two specially shaped surfaces to ensure that the tightening force meets the requirements. This structure is usually assembled from multiple parts, which has high manufacturing costs and risk of functional failure. Moreover, it is complicated to operate and inconvenient for medical staff to use. Summary of the Invention

[0005] Therefore, it is necessary to address the problems of structural complexity and functional failure risks associated with connecting ultrasonic energy transmission components and ultrasonic transducers using torque wrenches, and to provide a fastening device and ultrasonic surgical instrument that can reduce structural complexity and ensure accurate force application.

[0006] A fastening device for connecting the ultrasonic energy transmission component of a surgical ultrasonic instrument to an ultrasonic transducer, the fastening device comprising:

[0007] A torque connection structure includes a torque connection seat, the torque connection seat having a through mounting hole through which the ultrasonic energy transmission component can pass, and the ultrasonic energy transmission component being fixedly connected to the torque connection seat.

[0008] Multiple deformable components are arranged at circumferential intervals on the torque connector;

[0009] A force-applying structure, connected to the deformation component, wherein when the force-applying structure rotates, it can drive the torque connection structure to rotate via the deformation component; and

[0010] An indicator structure is provided on the torque connection seat and the force application structure, and is used to indicate the magnitude of the torque applied during tightening.

[0011] In one embodiment, the force-applying structure includes a force-applying body, which is at least partially sleeved on the torque connecting seat and coaxially arranged. One end of the deformation component is connected to the force-applying body, and the other end of the deformation component is connected to the torque connecting seat.

[0012] In one embodiment, the force-applying structure further includes a plurality of support members, which are spaced apart in the circumferential direction. The support members are used to support the force-applying body on the ultrasonic energy transmission component or the torque connector.

[0013] In one embodiment, the force-applying body portion is fitted with the torque connection seat;

[0014] The end of the support member away from the force-applying body can be supported on the ultrasonic energy transmission component. Alternatively, the force-applying structure may also include a support ring, which is coaxially arranged with the force-applying body. The support member connects the support ring and the force-applying body, and the support ring can be sleeved on the outside of the ultrasonic energy transmission component.

[0015] In one embodiment, the force-applying body is sleeved on the torque connection seat;

[0016] The support member is disposed on the force-applying body and has a preset distance between it and the torque connection seat; or, the support member is disposed on the torque connection seat and has a preset distance between it and the force-applying body.

[0017] In one embodiment, the torque connection structure further includes a torque connector for fixing the ultrasonic energy transmission component to the torque connection seat;

[0018] The torque connector is a fixing pin, and the torque connector has a fixing hole that extends radially to the mounting hole. The fixing pin passes through the fixing hole and is fixedly installed in the mating hole of the ultrasonic energy transmission component.

[0019] Alternatively, the torque connector may connect the ultrasonic energy transmission component to the torque connector seat via a key connection, toothed connection, non-circular shaft connection, or friction connection.

[0020] In one embodiment, the force-applying body is a knob, handle, or cantilever.

[0021] In one embodiment, the indicating structure includes a pointer and an indicator, the pointer and the indicator being respectively disposed on the torque connecting seat and the force applying structure. The force applying structure drives the torque connecting seat to rotate through the deformation component, so that the pointer and the indicator cooperate to indicate the magnitude of the applied torque.

[0022] In one embodiment, the indicator includes one or more of the following combinations: indicator scale, indicator text, indicator color, indicator protrusion, and indicator groove arranged in the circumferential direction.

[0023] An ultrasonic surgical instrument includes an instrument body, an ultrasonic energy transmission component, an ultrasonic transducer, and a fastening device as described in any of the above technical features.

[0024] The instrument body is disposed at one end of the ultrasonic energy transmission component, and the fastening device connects the other end of the ultrasonic energy transmission component to the ultrasonic transducer.

[0025] By adopting the above technical solution, the present invention has at least the following technical effects:

[0026] The fastening device and ultrasonic surgical instrument of the present invention have a torque connector with a mounting hole for mounting an ultrasonic energy transmission component and fixing the ultrasonic energy transmission component. A deformation component connects the force-applying structure to the outside of the torque connector. An indicator structure is disposed on the outside of the force-applying structure and the torque connector, and is capable of indicating the magnitude of the torque applied by the force-applying structure. When connecting the ultrasonic energy transmission component and the ultrasonic transducer using the fastening device, the ultrasonic energy transmission component is installed into the mounting hole of the torque connector and extends outwards. The ultrasonic energy transmission component is then fixed to the torque connector, and the end of the ultrasonic energy component extending out of the mounting hole is aligned with the ultrasonic transducer. Rotating the force-applying structure allows the torque connector to rotate via a deformation component, which in turn drives the torque connector to rotate synchronously via the ultrasonic energy transmission component in the torque connector. An indicator mark shows the magnitude of the torque applied by the force-applying structure. This achieves the connection between the ultrasonic energy transmission component and the ultrasonic transducer while preventing excessive or insufficient fastening force. It effectively solves the problems of complex structure and risk of functional failure associated with connecting ultrasonic energy transmission components and ultrasonic transducers using torque wrenches. This simplifies the structure of the fastening device, reduces assembly steps, and allows for real-time indication of the force applied by medical personnel to the force-applying structure, reducing the risk of functional failure, ensuring the required fastening force, guaranteeing accurate force application, and facilitating use by medical personnel. Attached Figure Description

[0027] Figure 1 This is a perspective view of the fastening device from one angle in one embodiment of the present invention;

[0028] Figure 2 for Figure 1 A perspective view of the fastening device from another angle;

[0029] Figure 3 for Figure 1 A top view of the fastening device shown;

[0030] Figure 4 for Figure 3 The fastening device shown is a cross-sectional view at point AA;

[0031] Figure 5 for Figure 1 Front view of the fastening device shown;

[0032] Figure 6 for Figure 5 The fastening device shown is a cross-sectional view at BB.

[0033] Figure 7 for Figure 5 The fastening device shown is a cross-sectional view at CC.

[0034] Figure 8 This is a perspective view of the fastening device in another embodiment of the present invention.

[0035] Wherein: 100, fastening device; 110, torque connection structure; 111, torque connection seat; 1111, mounting hole; 1112, fixing hole; 112, torque connector; 120, deformation component; 130, force application structure; 131, force application body; 132, support component; 133, support ring; 140, indicating structure; 141, pointer; 142, indicating mark; 1421, maximum value mark; 1422, minimum value mark. Detailed Implementation

[0036] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0042] See Figure 1 , Figure 2 and Figure 8 This invention provides a fastening device 100. This fastening device 100 is used to connect the ultrasonic energy transmission component (not shown) of an ultrasonic surgical instrument (not shown) to an ultrasonic transducer (not shown), enabling the ultrasonic energy transmission component to be securely connected to the ultrasonic transducer. In this way, after the ultrasonic energy transmission component is connected to the instrument body, the instrument body and the ultrasonic transducer can be reliably connected, ensuring surgical performance while maximizing the lifespan of the main components of the ultrasonic surgical instrument and reducing instrument usage costs. Optionally, the ultrasonic surgical instrument can be an ultrasonic scalpel, etc. When the ultrasonic surgical instrument is an ultrasonic scalpel, the ultrasonic energy transmission component is the scalpel handle. Of course, in other embodiments of this invention, the ultrasonic surgical instrument can also be other surgical instruments that require connection to an ultrasonic transducer.

[0043] Understandably, specialized torque wrenches are currently used to tighten ultrasonic energy transmission components (or instrument working ends) and ultrasonic transducers. The user first connects the torque transmission structure to the ultrasonic energy transmission component. Then, the user applies force or torque to the applying structure, causing deformation of the elastic deformation structure. When the force or torque exceeds a certain limit, the deformation of the elastic deformation structure causes the sliding structure to slip, resulting in relative movement between the applying structure and the torque transmission structure, thereby preventing the tightening force from exceeding the target range. However, this torque wrench has a complex structure, is prone to functional risks, and is inconvenient for medical personnel to use.

[0044] Therefore, the present invention provides a novel fastening device 100, which can effectively connect the ultrasonic energy transmission component and the ultrasonic transducer. During the fastening process, it can ensure accurate application of fastening force, eliminate the risk of functional failure, and facilitate use by medical personnel. The specific structure of the fastening device 100 is described in detail below.

[0045] See Figure 1 , Figure 2 and Figure 8In one embodiment, the fastening device 100 includes a torque connection structure 110, a plurality of deformable components 120, a force-applying structure 130, and an indicating structure 140. The torque connection structure 110 includes a torque connection seat 111 and a torque connector 112. The torque connection seat 111 has a through mounting hole 1111 through which the ultrasonic energy transmission component can pass. The torque connector 112 is used to fix the ultrasonic energy transmission component to the torque connection seat 111. The plurality of deformable components 120 are spaced apart circumferentially on the torque connection seat 111. The force-applying structure 130 is connected to the deformable components 120, and when the force-applying structure 130 rotates, it can drive the torque connection structure 110 to rotate through the deformable components 120. The indicating structure 140 is located on both the torque connection seat 111 and the force-applying structure 130, and is used to indicate the magnitude of the torque applied during fastening.

[0046] The torque connection structure 110 serves as the main connection body of the fastening device 100. This torque connection structure 110 can connect to the ultrasonic energy transmission component of an ultrasonic surgical instrument, thereby driving the ultrasonic energy transmission component to rotate synchronously and transmitting torque to it. The ultrasonic energy transmission component can be detachably installed into and fixed within the torque connection structure 110. After the ultrasonic energy transmission component is installed in the torque connection structure 110, rotation of the torque connection structure 110 can drive the ultrasonic energy transmission component to connect to or detach from the ultrasonic transducer.

[0047] The deformable component 120 is capable of elastic deformation and can connect to the force-applying structure 130 and the torque connection structure 110. Specifically, the deformable component 120 is arranged radially, with the inner radial end of the deformable component 120 connected to the torque connection structure 110 and the outer radial end of the deformable component 120 connected to the force-applying structure 130. The force-applying structure 130 is a structure for applying torque by medical personnel. After the medical personnel apply torque to the force-applying structure 130, the force-applying structure 130 will cause the deformable component 120 to deform, enabling the deformable component 120 to drive the torque connection structure 110 to rotate.

[0048] Understandably, after the torque connection structure 110 and the force application structure 130 are connected via the deformation component 120, there will be a certain phase difference in their movements. To more accurately apply the clamping force to the ultrasonic energy transmission component, the clamping device 100 of this invention also includes an indicator 142. The indicator 142 indicates the magnitude of the torque applied by medical personnel to the force application structure 130, thereby qualitatively or quantitatively indicating the degree of force application. In this way, medical personnel can adjust the clamping force between the ultrasonic energy transmission component and the ultrasonic transducer using the indicator 142, preventing the clamping force between the ultrasonic energy transmission component and the ultrasonic transducer from exceeding or falling below the target range, ensuring the accuracy of the clamping connection, and preventing problems such as the instrument body on the ultrasonic energy transmission component failing to function as expected or being damaged, thereby ensuring the performance of the ultrasonic surgical instrument.

[0049] Specifically, the torque connection structure 110 includes a torque connection seat 111 and a torque connector 112. The torque connection seat 111 has a mounting hole 1111 that extends through in the axial direction, in which an ultrasonic energy transmission component is mounted. The torque connector 112 is used to fix the ultrasonic energy transmission component in the torque connection seat 111. Moreover, after the ultrasonic energy transmission component is installed into the mounting hole 1111 of the torque connection seat 111, one end of the ultrasonic energy transmission component protrudes through the mounting hole 1111.

[0050] In other words, both ends of the ultrasonic energy transmission component are exposed above the torque connector 111. Thus, after the ultrasonic energy transmission component is installed through the mounting hole 1111, the instrument body of the ultrasonic surgical instrument is mounted at one end of the ultrasonic energy transmission component, and the ultrasonic transducer is mounted at the other end. Multiple deformable components 120 are arranged between the torque connector 111 and the force-applying structure 130, elastically connecting the torque connector 111 and the force-applying structure 130 through the deformable components 120.

[0051] When using the fastening device 100 of the present invention to connect the ultrasonic energy transmission component and the ultrasonic transducer, the ultrasonic energy transmission component is installed into the mounting hole 1111 of the torque connector 111, with one end of the ultrasonic energy transmission component extending out of the mounting hole 1111. The ultrasonic energy transmission component is then fixed to the torque connector 111 via the torque connector 112. The end of the ultrasonic energy component extending out of the mounting hole 1111 is then aligned with the ultrasonic transducer. Subsequently, the force-applying structure 130 is rotated. When the force-applying structure 130 rotates, it can drive the torque connector 111 to rotate via the deformation component 120, thereby allowing the torque connector 111 to rotate synchronously via the ultrasonic energy transmission component in the torque connector 112.

[0052] As the force-applying structure 130 rotates the torque connector 111 via the deformation component 120, the indicator 142 indicates the magnitude of the torque applied by the force-applying structure 130. Medical personnel can adjust the magnitude of the torque applied to the force-applying structure 130 according to the indication of the indicator 142 to ensure that the fastening force between the ultrasonic energy transmission component and the ultrasonic transducer is within the target range, thus completing the connection between the ultrasonic energy transmission component and the ultrasonic transducer.

[0053] The fastening device 100 of the above embodiment is connected to the torque connecting seat 111 through the deformation component 120, and the force applied by the force-applying structure 130 is indicated by the indicator 142. While realizing the connection between the ultrasonic energy transmission component and the ultrasonic transducer, it avoids the fastening force being too large or too small. It effectively solves the problems of complex structure and risk of functional failure that exist in the current connection between the ultrasonic energy transmission component and the ultrasonic transducer by the torque wrench. It simplifies the structure of the fastening device 100, reduces assembly steps, and can indicate the force applied by medical staff to the force-applying structure 130 in real time, reducing the risk of functional failure, ensuring that the fastening force meets the requirements, and making it convenient for medical staff to use.

[0054] After using the ultrasonic surgical instrument, the ultrasonic energy transmission component and ultrasonic transducer need to be disassembled. At this point, a reverse torque is applied to the force-applying structure 130, which immediately separates the ultrasonic energy transmission component from the ultrasonic transducer, thus achieving disassembly. Disassembling the ultrasonic transducer and ultrasonic energy transmission component maximizes the lifespan of each major component and reduces operating costs.

[0055] See Figure 1 , Figure 2 and Figure 8 Optionally, the deformable component 120 is rod-shaped. One end of the deformable component 120 is connected to the outer periphery of the torque connecting seat 111, and the other end is connected to the inner wall of the force-applying structure 130. Optionally, the deformable component 120 is made of materials such as plastic, rubber, or nylon. Optionally, the deformable component 120 is plate-shaped or has other shapes. Of course, in other embodiments of the present invention, the deformable component 120 may also be made of other components capable of elastic deformation. Exemplarily, there are four deformable components 120, which are respectively located between the torque connecting seat 111 and the force-applying structure 130 in the circumferential direction. Of course, in other embodiments of the present invention, there may also be two, three, or even more deformable components 120.

[0056] Understandably, the connection method of the torque connector 112 is not limited in principle, as long as it can fix the ultrasonic energy transmission component to the torque connector 111. In one embodiment, the torque connector 112 connects the ultrasonic energy transmission component to the torque connector 111 by means of pin connection, key connection, toothed connection, non-circular shaft connection, or friction connection. Of course, in other embodiments of the present invention, the torque connector 112 may also be other structures capable of fixing the ultrasonic energy transmission component to the torque connector 111.

[0057] Optionally, the torque connector 111 is cylindrical. Optionally, the diameter of the torque connector 111 is equal at all points along the axial direction. Optionally, the outer periphery of the torque connector 111 has a step on at least one side. This step may be partially equipped with an indicator structure 140. Optionally, the diameter of the end of the torque connector 111 that connects to the force-applying structure 130 is less than or equal to the diameter of the end of the torque connector 111 that is furthest from the force-applying structure 130.

[0058] See Figures 1 to 7 In one embodiment of the present invention, the torque connector 112 fixes the ultrasonic energy transmission component to the torque connector 111 by means of a pin connection. Specifically, the torque connector 112 is a fixing pin, and the torque connector 111 has a fixing hole 1112 extending radially into the mounting hole 1111. The fixing pin passes through the fixing hole 1112 and is fixedly installed in the mating hole of the ultrasonic energy transmission component. In one embodiment of the present invention... Figures 1 to 7 In the figure, the torque connector 112 is a fixing pin, which is not specifically shown in the figure.

[0059] The ultrasonic energy transmission component has a mating hole in the radial direction. After the ultrasonic energy transmission component is installed on the torque connector 111, the mating hole of the ultrasonic energy transmission component can at least partially coincide with the fixing hole 1112 of the torque connector 111, and the fixing pin can pass through the fixing hole 1112 and be installed into the mating hole. In this way, the ultrasonic energy transmission component can be fixed to the torque connector 111, so that when the torque connector 111 rotates, it can drive the ultrasonic energy transmission component to rotate synchronously through the fixing pin.

[0060] Optionally, the fixing hole 1112 extends radially through the torque connector 111. Of course, in other embodiments of the invention, the fixing hole 1112 may also extend radially to the mounting hole 1111, or extend radially through the mounting hole 1111 and into the torque connector 111. That is, the fixing hole 1112 can be a through hole or a blind hole, as long as it ensures that the fixing pin passing through the fixing hole 1112 can be installed into the mating hole of the ultrasonic energy transmission component.

[0061] See Figure 8In another embodiment of the present invention, the torque connector 112 fixes the ultrasonic energy transmission component to the torque connector 111 via a toothed connection. Specifically, the torque connector 112 is a limiting protrusion disposed on the inner wall of the mounting hole 1111 of the torque connector 111, and the ultrasonic energy transmission component has a mating groove. When the ultrasonic energy transmission component is installed into the mounting hole 1111 of the torque connector 111, the mating groove of the ultrasonic energy transmission component engages with the limiting protrusion. The engagement between the limiting protrusion and the limiting groove secures the ultrasonic energy transmission component.

[0062] After the ultrasonic energy transmission component is installed on the torque connector 111, the limiting protrusion is installed into the mating groove of the ultrasonic energy transmission component. At this time, the limiting protrusion can abut against the inner wall of the mating groove. In this way, the ultrasonic energy transmission component is fixed on the torque connector 111. Thus, when the torque connector 111 rotates, the ultrasonic energy transmission component can be driven to rotate synchronously through the engagement of the limiting protrusion and the mating groove.

[0063] Of course, in other embodiments of the present invention, the torque connector 112 can also be a keyed connection, a non-circular shaft connection, etc. The non-circular shaft here can be a curved shaft, a polygonal shaft, a shaft combining curves and straight lines, or other irregular shafts. It is worth noting that the fixing principle of the torque connector 112 in other embodiments is essentially the same as the fixing principle of the torque fixing member being a fixing pin or a limiting protrusion in the above embodiments, and will not be elaborated upon here.

[0064] See Figure 1 , Figure 2 and Figure 8 In one embodiment, the force-applying structure 130 includes a force-applying body 131, which is at least partially sleeved on the torque connecting seat 111 and coaxially arranged. One end of the deformation component 120 is connected to the force-applying body 131, and the other end of the deformation component 120 is connected to the torque connecting seat 111.

[0065] The force-applying body 131 is the operating component of the force-applying structure 130 and also the operating component of the entire fastening device 100. When medical personnel operate the force-applying body 131, they can drive the torque connecting seat 111 to rotate the ultrasonic energy transmission component, thereby connecting or separating the ultrasonic energy transmission component from the ultrasonic transducer. The force-applying structure 130 is at least partially sleeved on the outside of the torque connecting seat 111, and the deformation component 120 is located between the force-applying body 131 and the torque connecting seat 111. The deformation component 120 transmits the torque received by the force-applying structure 130 to the torque connecting seat 111.

[0066] Furthermore, the axes of the force-applying body 131 and the torque connector 111 coincide. This ensures that when medical personnel apply torque to the force-applying body 131, it drives the torque connector 111 to rotate around the central axis of the ultrasonic energy transmission component, preventing eccentric rotation between the force-applying body 131 and the torque connector 111, thus ensuring accurate connection or separation between the torque connector 111 and the ultrasonic transducer. Optionally, the force-applying body 131 has a connecting hole with an outer diameter larger than the outer diameter of the torque connector 111, allowing the force-applying body 131 to be at least partially mounted on the torque connector 111.

[0067] Optionally, the force-applying body 131 is partially sleeved on the outside of the torque connecting seat 111. For example... Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the force-applying body 131 is provided with one end of the torque connecting seat 111 and partially overlaps with the torque connecting seat 111. A plurality of deformation components 120 are provided between the position where the force-applying body 131 and the torque connecting seat 111 partially overlap.

[0068] Of course, in other embodiments of the present invention, the force-applying body 131 may also be completely fitted onto the outside of the torque connecting seat 111. For example... Figure 8 As shown, the force-applying body 131 is completely fitted onto the outside of the torque connecting seat 111, and a certain space exists between the force-applying body 131 and the torque connecting seat 111, in which the deformation component 120 is installed. Optionally, along the axial direction, at least one end face of the force-applying body 131 and the torque connecting seat 111 are coplanar. That is, along the axial direction, one end face of the force-applying body 131 is coplanar with one end face of the torque connecting seat 111. Of course, both end faces of the force-applying body 131 can also be coplanar with both end faces of the torque connecting seat 111, i.e., their axial thicknesses are the same. In other embodiments of the present invention, the two end faces of the force-applying body 131 may also protrude or be recessed into the end faces of the torque connecting seat 111.

[0069] In one embodiment, the force-applying body 131 is a knob, handle, or cantilever. In one embodiment of the invention, the force-applying body 131 is a knob, and the knob is a hexagonal nut, such as... Figure 1 and Figure 2 As shown. Of course, in other embodiments of the present invention, the force-applying body 131 can also be a cantilever, such as... Figure 8 As shown. Of course, in other embodiments of the present invention, the force-applying body 131 may also be other components capable of rotation.

[0070] See Figure 1 , Figure 2 and Figure 8In one embodiment, the force-applying structure 130 further includes a plurality of support members 132, which are spaced apart in the circumferential direction. The support members 132 are used to support the force-applying body 131 on the ultrasonic energy transmission component or the torque connector 111. The support members 132 provide support and are arranged circumferentially inside the force-applying body 131 to support it, preventing the force-applying body 131 from becoming eccentric relative to the ultrasonic energy transmission component when it rotates, and preventing unintended deformation of the force-applying body 131.

[0071] For example, there are four support members 132, which are spaced apart in the circumferential direction. Of course, in other embodiments of the present invention, there may be two, three or more support members 132. Optionally, the support member 132 may be a support rod or a support plate, as long as it can ensure that the support member 132 provides support.

[0072] See Figures 1 to 7 In one embodiment of the present invention, the end of the support member 132 away from the force-applying body 131 can be supported on the ultrasonic energy transmission component. When the force-applying body 131 is partially sleeved on one end of the torque connecting seat 111, a deformation member 120 is provided on the inner wall of the force-applying body 131 near the torque connecting seat 111, and a support member 132 is provided on the inner wall away from the torque connecting seat 111.

[0073] In other words, the force-applying body 131 has a certain thickness along the axial direction. A deformation component 120 and a support component 132 are respectively arranged along the circumferential direction on the inner wall of the force-applying body 131. The deformation component 120 is located close to the torque connecting seat 111, while the support component 132 is located away from the torque connecting seat 111. The deformation component 120 can connect the torque connecting seat 111 and the force-applying body 131, and one end of the support component 132 is connected to the force-applying body 131, while the other end is suspended.

[0074] When the ultrasonic energy transmission component is installed into the mounting hole 1111 of the torque connector 111 and extends out of the mounting hole 1111, the support member 132 surrounds the periphery of the ultrasonic energy transmission component. At this time, there is a certain radial distance between the support member 132 and the ultrasonic energy transmission component. When medical personnel operate the force-applying body 131, during the process of the force-applying body 131 driving the torque connector 111 to rotate through the deformation member 120, the force-applying body 131 may rotate eccentrically. When the force-applying body 131 is eccentric, the support member 132 in the eccentric direction of the force-applying body 131 can abut against the ultrasonic energy transmission component, thereby supporting the force-applying body 131 and preventing the force-applying body 131 from undergoing unexpected deformation.

[0075] See Figures 1 to 7In one embodiment, the force-applying structure 130 further includes a support ring 133, which is coaxially arranged with the force-applying body 131. The support member 132 connects the support ring 133 and the force-applying body 131, and the support ring 133 can be sleeved on the outside of the ultrasonic energy transmission component.

[0076] In other words, a support ring 133 is provided at the end of the support member 132 away from the force-applying body 131. Multiple support members 132 can support the support ring 133 in the middle region of the force-applying body 131. When the ultrasonic energy transmission component is installed on the torque connector 111, the ultrasonic energy transmission component can extend through the support ring 133. When the force-applying body 131 is eccentric, the support ring 133 can abut against the ultrasonic energy transmission component, and the force-applying body 131 is supported by the action of the support ring 133 and the support member 132, preventing the force-applying body 131 from undergoing unexpected deformation.

[0077] Optionally, the support member 132 and the deformation member 120 are arranged to coincide in the projection in the axial direction; of course, the support member 132 and the deformation member 120 can also be arranged to be staggered.

[0078] See Figure 8 In another embodiment of the present invention, the force-applying body 131 is sleeved on the torque connecting seat 111, and at least one end face of the force-applying body 131 and the torque connecting seat 111 are coplanar. The support member 132 is disposed on the force-applying body 131 and has a predetermined distance between it and the torque connecting seat 111, or the support member 132 is disposed on the torque connecting seat 111 and has a predetermined distance between it and the force-applying body 131.

[0079] The force-applying body 131 is completely fitted onto the torque connecting seat 111, and the end face of the force-applying body 131 is coplanar with the end face of the torque connecting seat 111. At this time, the support member 132 is disposed between the force-applying body 131 and the torque connecting seat 111. When the force-applying body 131 rotates relative to the torque connecting seat 111 via the deformation member 120, if the force-applying body 131 becomes eccentric, the support member 132 can support it between the force-applying body 131 and the torque connecting seat 111, thus supporting the force-applying body 131 and preventing unexpected deformation. Optionally, multiple deformation members 120 and multiple support members 132 are staggered.

[0080] For example, the support member 132 is disposed on the outer wall of the torque connecting seat 111 and located between the force-applying body 131 and the torque connecting seat 111. There is a certain distance between the support member 132 and the inner wall of the mounting hole 1111 of the force-applying body 131. When the force-applying body 131 is eccentric, the end of the support member 132 can abut against the inner wall of the mounting hole 1111 of the force-applying body 131, thereby providing support and preventing the force-applying body 131 from undergoing unexpected deformation.

[0081] Of course, in other embodiments of the present invention, the support member 132 may also be disposed on the inner wall of the mounting hole 1111 of the force-applying body 131 and located between the force-applying body 131 and the torque connecting seat 111, with a certain distance between the support member 132 and the outer wall of the torque connecting seat 111. When the force-applying body 131 is eccentric, the end of the support member 132 can abut against the torque connecting seat 111, providing support and preventing the force-applying body 131 from undergoing unexpected deformation.

[0082] See Figure 1 , Figure 2 and Figure 8 In one embodiment, the indicating structure 140 includes a pointer 141 and an indicator 142. The pointer 141 and the indicator 142 are respectively disposed on the torque connecting seat 111 and the force applying body 131. The force applying structure 130 drives the torque connecting seat 111 to rotate through the deformation component 120, so that the pointer 141 and the indicator 142 cooperate to indicate the magnitude of the applied torque.

[0083] The pointer 141 and the indicator 142 are respectively disposed on the torque connecting seat 111 and the force applying body 131. When the force applying body 131 drives the torque connecting seat 111 to rotate through the deformation component 120, there will be a certain phase difference between the force applying body 131 and the torque connecting seat 111, and consequently there will also be a certain phase difference between the pointer 141 and the indicator 142.

[0084] In this way, the pointer 141 can slide across the indicator 142 to qualitatively or quantitatively indicate the degree of force applied, that is, to indicate the magnitude of the torque applied to the force-applying body 131. Medical personnel can adjust the magnitude of the torque applied to the force-applying body 131 according to the indication of the pointer 141 and the indicator 142, so that the fastening force on the ultrasonic energy transmission component is within the target range, neither too large nor too small, thus ensuring performance.

[0085] Optionally, the number of indicator structures 140 is two, and the two indicator structures 140 are symmetrically arranged. That is, the number of pointers 141 can also be two, and the two pointers 141 are symmetrically arranged. Correspondingly, the number of indicator markers 142 is also two, symmetrically arranged, and each corresponds to one pointer 141.

[0086] See Figures 1 to 7 In one embodiment of the present invention, a pointer 141 is disposed at the end of the force-applying body 131 facing the torque connecting seat 111 and extending in the axial direction. An indicator 142 is disposed on the outer wall of the torque connecting seat 111, and the end of the pointer 141 can be aligned with the indicator 142. When the force-applying body 131 rotates, it can drive the torque connecting seat 111 to rotate through the deformation member 120. Due to the elastic effect of the deformation member 120, the end of the pointer 141 can point on the indicator 142, thereby indicating the torque received by the force-applying body 131.

[0087] See Figure 8 In another embodiment of the present invention, pointer 141 and indicator 142 are disposed on the end face of the force-applying body 131 coplanar with torque connecting seat 111, and pointer 141 is disposed on the end face of torque connecting seat 111 and extends in the radial direction. Indicator 142 is disposed on the end face of the force-applying body 131 and corresponds to the end of pointer 141. When the force-applying body 131 rotates, it can drive torque connecting seat 111 to rotate through deformation member 120. Due to the elastic effect of deformation member 120, the end of pointer 141 can indicate on indicator 142, thereby showing the torque applied to force-applying body 131.

[0088] See Figure 1 , Figure 2 and Figure 8 In one embodiment, the indicator 142 includes one or more combinations of indicator scales, indicator text, indicator colors, indicator protrusions, and indicator grooves arranged in the circumferential direction. That is to say, the structural form of the indicator 142 is not limited in principle, as long as it can cooperate with the pointer 141 to indicate the torque applied to the force-applying body 131.

[0089] For example, the indicator 142 is raised. When the torque of the force-applying body 131 reaches a preset value, the pointer 141 vibrates and makes a sound as it slides over the raised part. Medical personnel can hear and see the interaction between the pointer 141 and the raised indicator 142, thereby qualitatively or quantitatively indicating the degree of force applied. Of course, in other embodiments of the present invention, the indicator 142 is an indicator color, such as printed, laser-marked, etc.

[0090] For example, the indicator 142 includes a maximum value indicator 1421 and a minimum value indicator 1422, which are spaced apart in the circumferential direction. The force-applying body 131 drives the pointer 141 to rotate. When the pointer 141 contacts the minimum value indicator 1422, it indicates that the torque applied to the force-applying body 131 is the minimum force within the target range. When the pointer 141 contacts the maximum value indicator, it indicates that the torque applied to the force-applying body 131 is the maximum force within the target range. The pointer 141 being between the maximum value indicator 1421 and the minimum value indicator 1422 ensures accurate matching between the ultrasonic energy transmission component and the ultrasonic transducer.

[0091] See Figure 1 , Figure 2 and Figure 8 In one embodiment, the indicator 142 further includes an indicator scale, which is positioned between the maximum value indicator 1421 and the minimum value indicator 1422 and extends in the circumferential direction. This allows medical personnel to adjust the force applied by the force-applying body 131 according to the indicator scale, achieving fine-tuning of the tightening force.

[0092] See Figure 1 , Figure 2 and Figure 8 When using the fastening device 100, the ultrasonic energy transmission component is installed in the mounting hole 1111 of the torque connector 111, and the ultrasonic energy transmission component extends through the support ring 133 of the force-applying body 131. The ultrasonic energy transmission component is fixed in the mounting hole 1111 by the torque connector 112. Rotating the force-applying body 131 causes the torque connector 111 to rotate via the deformation component 120. When the torque connector 111 rotates, it can connect the ultrasonic energy transmission component to the ultrasonic transducer via the torque connector 112. During the rotation of the force-applying body 131, the force-applying body 131 is supported by the cooperation of the support member 132 and the support ring 133, preventing the force-applying body 131 from being eccentric and avoiding unexpected deformation. Furthermore, during the rotation of the force-applying body 131, the end of the pointer 141 can indicate between the maximum value mark 1421 and the minimum value mark 1422, thereby ensuring the accuracy of the torque applied by the force-applying body 131 and ensuring that the ultrasonic energy transmission component can be accurately connected to the ultrasonic transducer.

[0093] When it is necessary to disassemble the ultrasonic connection component from the ultrasonic transducer, simply rotate the force-applying body 131 in the opposite direction; details will not be elaborated here.

[0094] The present invention also provides an ultrasonic surgical instrument, comprising an instrument body, an ultrasonic energy transmission component, an ultrasonic transducer, and a fastening device 100 as described in any of the above embodiments. The instrument body is disposed at one end of the ultrasonic energy transmission component, and the fastening device 100 connects the other end of the ultrasonic energy transmission component to the ultrasonic transducer. When the ultrasonic surgical instrument of the present invention uses the fastening device 100 of the above embodiments, it can achieve accurate connection between the ultrasonic energy transmission component and the ultrasonic transducer, enabling the ultrasonic energy transmission component to be used normally as expected, avoiding damage to the ultrasonic transducer and the ultrasonic energy transmission component, and ensuring performance.

[0095] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A fastening device (100), characterized in that, For connecting the ultrasonic energy transmission component of a surgical ultrasonic instrument to an ultrasonic transducer, the fastening device (100) includes: The torque connection structure (110) includes a torque connection seat (111), the torque connection seat (111) having a through mounting hole (1111), the mounting hole (1111) allowing the ultrasonic energy transmission component to pass through, and the ultrasonic energy transmission component being fixedly connected to the torque connection seat (111). Multiple deformable components (120) are arranged at circumferential intervals on the torque connecting seat (111). A force-applying structure (130) includes a force-applying body (131), which is at least partially fitted onto the torque connecting seat (111) and coaxially arranged. One end of a deformation component (120) is connected to the force-applying body (131), and the other end is connected to the torque connecting seat (111). When the force-applying structure (130) rotates, it can drive the torque connecting structure (110) to rotate through the deformation component (120). An indicator structure (140) is provided on the torque connection seat (111) and the force application structure (130) respectively, and is used to indicate the magnitude of the torque applied during tightening.

2. The fastening device (100) according to claim 1, characterized in that, The force-applying structure (130) also includes a plurality of support members (132), which are spaced apart in the circumferential direction. The support members (132) are used to support the force-applying body (131) on the ultrasonic energy transmission component or the torque connector (111).

3. The fastening device (100) according to claim 2, characterized in that, The torque connecting seat (111) is partially sleeved on the force-applying body (131). The end of the support member (132) away from the force-applying body (131) can be supported on the ultrasonic energy transmission component. Alternatively, the force-applying structure (130) may also include a support ring (133), which is coaxially arranged with the force-applying body (131). The support member (132) connects the support ring (133) and the force-applying body (131). The support ring (133) can be sleeved on the outside of the ultrasonic energy transmission component.

4. The fastening device (100) according to claim 1, characterized in that, The force-applying body (131) is sleeved on the torque connecting seat (111). The force-applying structure (130) also includes a plurality of support members (132), the support members (132) are disposed on the force-applying body (131) and there is a preset distance between them and the torque connecting seat (111), or the support members (132) are disposed on the torque connecting seat (111) and there is a preset distance between them and the force-applying body (131).

5. The fastening device (100) according to any one of claims 1 to 4, characterized in that, The torque connection structure (110) further includes a torque connector (112), which is used to fix the ultrasonic energy transmission component to the torque connector (111). The torque connector (112) is a fixing pin, and the torque connector (111) has a fixing hole (1112) that extends radially to the mounting hole (1111). The fixing pin passes through the fixing hole (1112) and is fixedly installed in the mating hole of the ultrasonic energy transmission component. Alternatively, the torque connector (112) connects the ultrasonic energy transmission component to the torque connector (111) via a key connection, toothed connection, non-circular shaft connection, or friction connection.

6. The fastening device (100) according to any one of claims 1 to 4, characterized in that, The force-applying body (131) is a knob, handle, or cantilever.

7. The fastening device (100) according to any one of claims 1 to 4, characterized in that, The indicating structure (140) includes a pointer (141) and an indicating mark. The pointer (141) and the indicating mark are respectively disposed on the torque connecting seat (111) and the force applying structure (130). The force applying structure (130) drives the torque connecting seat (111) to rotate through the deformation component (120), so that the pointer (141) and the indicating mark cooperate to indicate the magnitude of the applied torque.

8. The fastening device (100) according to claim 7, characterized in that, The indicator includes one or more combinations of indicator scales, indicator text, indicator colors, indicator ridges, and indicator grooves arranged in the circumferential direction.

9. An ultrasonic surgical instrument, characterized in that, It includes the instrument body, the ultrasonic energy transmission component, the ultrasonic transducer, and the fastening device (100) as described in any one of claims 1 to 8. The instrument body is disposed at one end of the ultrasonic energy transmission component, and the fastening device (100) connects the other end of the ultrasonic energy transmission component to the ultrasonic transducer.

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