An ultrasonic scalpel handle

Abstract

This utility model discloses an ultrasonic scalpel handle, including a handle body and a power connection cable. The handle body has a mounting hole for connecting the scalpel. The power connection cable includes a conductive wire and a connector fixed at one end of the conductive wire. The other end of the conductive wire is electrically connected to a circuit element located in the handle body. The connector has a connection structure for connecting to an external power source. The connector can be inserted into the mounting hole. During cleaning and disinfection, inserting the connector into the mounting hole at the front of the handle body can seal the mounting hole, thereby preventing liquid from entering the inner cavity of the handle body from the mounting hole during cleaning and disinfection and causing damage to its internal circuit elements. This is not only convenient to operate, but also eliminates the need for a separate waterproof end plug, avoiding the problems of needing to store the waterproof end plug separately and being easily lost.

Description

Technical Field

[0001] This utility model relates to an ultrasonic surgical scalpel handle. Background Technology

[0002] An ultrasonic scalpel (also known as an ultrasonic blade or ultrasonic hemostatic blade) is an advanced medical device widely used in surgical procedures. The ultrasonic scalpel not only cuts tissue but also has a coagulation function. During cutting, the high-frequency vibration of the blade head can close blood vessels, thereby reducing bleeding. An ultrasonic scalpel consists of a handle and a blade. The handle contains a transducer and circuitry, while the blade is attached to the handle. During surgery, the surgeon holds the handle and inserts the blade into the body to perform the procedure. The blade is usually disposable and discarded after use; however, the handle is more expensive and is typically reused after rigorous sterilization.

[0003] During the disinfection process, the handle is usually washed with water to remove surface stains. However, when washing with water, because the opening of the mounting hole at the front of the handle that connects to the knife is open, liquid can easily enter the handle from this opening, causing damage to the internal circuit structure and transducer, resulting in a significant reduction in the handle's service life. Utility Model Content

[0004] The purpose of this invention is to provide an ultrasonic scalpel handle to solve one or more problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an ultrasonic scalpel handle, comprising a handle body, wherein the handle body has a mounting hole for connecting a scalpel, the handle further comprising a power connection wire connected to the handle body, the power connection wire comprising a conductive wire and a connector fixed at one end of the conductive wire, the other end of the conductive wire being electrically connected to a circuit element located in the handle body, the connector having a connection structure for connecting an external power source, wherein the connector can be fitted into the mounting hole.

[0006] Preferably, the outer periphery of the connector has a sealing ring that extends radially outward, and when the connector is inserted into the mounting hole, the outer periphery of the connector is sealed to the circumferential wall of the mounting hole through the sealing ring.

[0007] In some embodiments, the sealing ring has a plurality of rings spaced apart along the length of the connector.

[0008] In some embodiments, the connector includes a base body having a mounting cavity, and a power receiving element and a connector fixedly disposed in the mounting cavity. The conductive wire extends from one end of the base body into the mounting cavity and is fixedly connected to the connector. The power receiving element extends from the other end of the base body into the mounting cavity. The power receiving element is fixedly connected to the connector and electrically connected to the conductive wire. The connection structure is disposed on the power receiving element.

[0009] In some embodiments, the base body is cylindrical and is made of plastic or silicone.

[0010] In some embodiments, the external power source has an external power cord with a connector that can be plugged into and connected to the connection structure and electrically connected to the power receiving element.

[0011] In some embodiments, the connector has a slot for inserting at least a portion of the plug, and the connection structure is a socket and a positioning protrusion provided on the power receiving element, wherein the plug is engaged with the socket and the positioning protrusion when inserted into the slot.

[0012] In some embodiments, the outer periphery of the seat body is further provided with an annular limiting flange that extends radially outward. When the connecting seat is inserted into the mounting hole, the annular limiting flange abuts against the handle body.

[0013] In some embodiments, the power connection cable further includes a fixing seat, a waterproof ring, and a limiting seat sequentially sleeved on the conductive wire. A connection hole is provided on the handle body, and the connection hole communicates with the inner cavity of the handle body. The waterproof ring is fitted into the connection hole and is sealed to the circumferential wall of the connection hole. The fixing seat is located in the inner cavity of the handle body, and the limiting seat is located outside the handle body.

[0014] Preferably, the handle body has a grip portion, and the power connection cable is connected to the lower part of the grip portion.

[0015] In some embodiments, the power connector has a first use state for connecting to the external power source and a second use state for engaging with the mounting hole, wherein in the first use state, the power connector extends downward from the lower part of the grip handle; in the second use state, the conductive wire bends forward and upward, and the connector is engaged and inserted into the mounting hole.

[0016] Preferably, the handle further includes an operating component movably disposed on the handle body, the handle body having a mounting groove, the operating component passing through the mounting groove and connected to the handle body, and the handle further includes a waterproof component, the waterproof component including a flexible and deformable waterproof sleeve, the waterproof sleeve fittingly covering the outside of the operating component, and the outer periphery of the waterproof sleeve being sealed to the circumferential wall of the mounting groove.

[0017] In some embodiments, the waterproof assembly further includes a waterproof ring, the waterproof seat is circumferentially closed and fitted into the mounting groove, and the outer periphery of the waterproof sleeve is engaged between the waterproof seat and the circumferential wall of the mounting groove.

[0018] In some embodiments, the operating component is a button assembly that partially passes through the mounting groove and is connected to the handle body. The waterproof sleeve has a receiving cavity facing the opening of the mounting groove, and the button assembly is movably received within the receiving cavity.

[0019] In some embodiments, the operating component is a grip assembly, which includes an operating handle and a connecting rod fixedly disposed together. The operating handle is located outside the handle body, and the connecting rod is movably inserted into the mounting groove and connected to the handle body. The waterproof sleeve includes a fixing portion fixedly fitted onto the outside of the operating handle and a connecting portion extending from the fixing portion toward the handle body. The connecting portion is sealed to the circumferential groove wall of the mounting groove, wherein the connecting portion has a receiving cavity facing the opening of the mounting groove, and the connecting rod is movably inserted into the receiving cavity.

[0020] Due to the application of the above technical solution, this utility model has the following advantages: The ultrasonic scalpel handle of this utility model, by attaching a power connection cable to its handle body, can not only directly connect to an external power source to power the circuit components of the handle body, but also, during cleaning and disinfection, insert the connection cable into the mounting hole at the front of the handle body, thereby sealing the mounting hole and preventing liquid from entering the inner cavity of the handle body from the mounting hole during cleaning and disinfection, thus preventing damage to its internal circuit components. This is not only convenient to operate, but also eliminates the need for a separate waterproof end plug, avoiding the problems of needing to store the waterproof end plug separately and being easily lost. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the ultrasonic scalpel handle according to Embodiment 1 of this utility model;

[0023] Figure 2 To and Figure 1 A schematic diagram of the external power cord that mates with the handle of the ultrasonic scalpel;

[0024] Figure 3 for Figure 1 A three-dimensional structural diagram of the power connection cable in the handle of an ultrasonic scalpel;

[0025] Figure 4 for Figure 3 A front view of the power cord;

[0026] Figure 5 for Figure 1 A schematic diagram of the structure of the ultrasonic scalpel handle after the connecting seat is inserted into the mounting hole;

[0027] Figure 6 for Figure 5 A schematic diagram of the mating structure between the power connection cable and the mounting hole in the handle of an ultrasonic scalpel;

[0028] Figure 7 This is a schematic diagram of the overall structure of the ultrasonic scalpel handle in Embodiment 2 of this utility model;

[0029] Figure 8 for Figure 7 A longitudinal cross-sectional view of the handle of an ultrasonic scalpel (internal components omitted);

[0030] Figure 9 for Figure 7 A schematic diagram of the structure of the ultrasonic scalpel handle after the connecting seat is inserted into the mounting hole;

[0031] Figure 10 for Figure 9 A longitudinal cross-sectional view of the handle of an ultrasonic scalpel;

[0032] Figure 11 for Figure 7 A three-dimensional structural diagram of the power connection cable in the handle of an ultrasonic scalpel;

[0033] Figure 12 for Figure 11A longitudinal cross-sectional view of the power connection cable in the diagram;

[0034] Figure 13 for Figure 7 A schematic diagram of the operating components and waterproofing assembly in the handle of an ultrasonic scalpel;

[0035] Figure 14 for Figure 13 A schematic diagram of the structure of the first and second waterproof seats;

[0036] Figure 15 for Figure 7 A schematic diagram of the ultrasonic scalpel handle after removing the waterproof components;

[0037] In the attached diagrams above:

[0038] 1. Handle body; 11. Connector; 12. Grip handle; 13. Mounting hole;

[0039] 2. Power connection cable; 21. Conductive wire; 22. Connector; 22a. Sealing ring; 22b. Annular limiting flange; 221. Base body; 222. Connector; 223. Electrical connection element; 224. Slot; 23. Limiting seat; 24. Fixing seat; 25. Waterproof ring;

[0040] 3. External power cord; 31. Connector; 32. Plug; 33. Power adapter;

[0041] 4. Button component; 41. Button;

[0042] 5. Grip assembly; 51. Operating handle; 52. Connecting rod;

[0043] 6. First waterproof component; 61. First waterproof sleeve; 62. First waterproof base;

[0044] 7. Second waterproof component; 71. Second waterproof sleeve; 71a. Fixing part; 71b. Connecting part; 72. Second waterproof seat. Detailed Implementation

[0045] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] Example 1

[0047] See Figures 1 to 6The ultrasonic scalpel handle shown includes a handle body 1, in which a transducer assembly and other circuit components are disposed in the inner cavity. A connector 11 is disposed at the front of the handle body 1, and the connector 11 is provided with a mounting hole 13. The scalpel can pass through the mounting hole 13 and connect to the connector 11, thereby connecting to the handle body 1. The handle body 1 also has a gripping handle 12 located at the lower part. After the handle body 1 is powered on, when the operator holds the gripping handle 12 and operates the handle or buttons on the handle body 1, the operator can perform surgical operations on the surgical site using the scalpel.

[0048] The handle also includes a power cable 2 connected to the handle body 1. The power cable 2 includes a conductive wire 21 and a connector 22 fixed to one end of the conductive wire 21. The other end of the conductive wire 21 is electrically connected to a circuit element located in the handle body 1. The connector 22 has a connection structure for connecting to an external power source and can be inserted into the mounting hole 13. Specifically, the power cable 2 is connected to the lower part of the grip portion 12.

[0049] Thus, the power cable 2 has two different usage states. In the first usage state, the power cable 2 is connected to an external power source, and can be used for surgical operations after the handle body 1 is powered on. In the second usage state, the conductive wire 21 is bent forward and upward, and the connector 22 is inserted into the mounting hole 13, thus sealing the mounting hole 13. This prevents liquid from entering the inner cavity of the handle body 1 through the mounting hole 13 and damaging the internal circuit components of the handle during cleaning or disinfection. The power cable 2 is multi-functional and avoids the problems of needing to store it separately and being easily lost due to the need for a separate waterproof end plug.

[0050] Referring to the accompanying drawings, the connecting seat 22 is generally cylindrical. The outer periphery of the connecting seat 22 has a sealing ring 22a extending radially outward. When the connecting seat 22 is inserted into the mounting hole 13, the outer periphery of the connecting seat 22 is sealed to the circumferential wall of the mounting hole 13 through the aforementioned sealing ring 22a, thereby completely sealing the mounting hole 13 and isolating the inner cavity of the handle body 1 from the outside, preventing liquid from entering the inner cavity of the handle body 1 during cleaning and disinfection. In this embodiment, multiple sealing rings 22a are spaced apart along the length of the connecting seat 22, thus forming multiple seals to effectively prevent liquid from entering the inner cavity of the handle body 1.

[0051] The connector 22 includes a base body 221 with a mounting cavity, and a power receiving element 223 and a connector 222 fixedly disposed in the mounting cavity. The conductive wire 21 extends from one end of the base body 221 into the mounting cavity and is fixedly connected to the connector 222. The power receiving element 223 extends from the other end of the base body 221 into the mounting cavity of the base body 221. The power receiving element 223 is fixedly connected to the connector 222 and electrically connected to the conductive wire 21. The connection structure is disposed in the power receiving element 223.

[0052] Specifically, the base body 221 is made of plastic or silicone material, and when inserted into the mounting hole 13, it fits well against the circumferential wall of the mounting hole 13, thus sealing the mounting hole 13. The external power supply includes an external power cord 3, and the power connection cable 2 is connected to the power source after connecting to the external power cord 3. For example... Figure 2 As shown, the external power cord 3 has a connector 31, a power adapter 33, and a plug 32. The plug 32 can be plugged into a power outlet connected to an AC power source to achieve power connection. The connector 31 can be plugged into the connection structure on the connector 22 and connected to the power receiving element 223. See also Figure 6 As shown, the connector 22 has a slot 224 for inserting at least part of the connector 31. The connection structure is a socket and a positioning protrusion provided on the power receiving element 223. When the connector 31 is inserted into the slot 224, it can cooperate with the socket and the positioning protrusion to connect electrically with the power receiving element 223.

[0053] like Figure 3 , Figure 4 As shown, the power connection cable 2 also includes a fixing seat 24, a waterproof ring 25, and a limiting seat 23 sequentially sleeved on the conductive wire 21. The handle body 1 has a connection hole that connects to the inner cavity of the handle body 1. The waterproof ring 25 is inserted into the connection hole and sealed to the circumferential wall of the connection hole. The fixing seat 24 is located in the inner cavity of the handle body 1, and the limiting seat 23 is located outside the handle body 1. This prevents water from entering at the connection point between the power connection cable 2 and the handle body 1.

[0054] In this embodiment, the aforementioned fixing seat 24, waterproof ring 25 and limiting seat 23 are integrally formed as a whole component and cover the outside of the conductive wire 21. During assembly, the waterproof ring 25 is clamped between the two outer shells of the handle body 1 by interlocking them, thus enabling the assembly of the power connection wire 2.

[0055] In summary, the ultrasonic scalpel handle provided in this embodiment has a power connection cable 2 attached to the handle body 1. This cable can not only be directly connected to an external power source to power the circuit components of the handle body 1, but also, during cleaning and disinfection, the connector 22 on the power connection cable 2 can be inserted into the mounting hole 13 at the front of the handle body 1, thus sealing the mounting hole 13. This prevents liquid from entering the inner cavity of the handle body 1 through the mounting hole 13 during cleaning and disinfection, which could damage the internal circuit components. This not only makes operation convenient, but also eliminates the need for a separate waterproof end plug, avoiding the problems of needing to store the waterproof end plug separately and the risk of loss.

[0056] Example 2

[0057] See Figures 7 to 15 The ultrasonic scalpel handle shown differs from that of Example 1 mainly in the following two aspects:

[0058] Firstly, in the ultrasonic scalpel handle provided in this embodiment, the connector 22 of the power connection cable 2 is also provided with an annular limiting flange 22b. Specifically, the annular limiting flange 22b is provided on the outer periphery of the body 221 and extends radially outward. When the connector 22 is inserted into the mounting hole 13, the annular limiting flange 22b abuts against the handle body 1, specifically abutting against the outer end of the connector 11 axially. In this way, when the connector 22 is inserted into the mounting hole 13, it is easy to know whether the connector 22 has been inserted in place. At the same time, the annular limiting flange 22b abuts against the handle body 1, which increases the seal at the contact point between the two and further improves the waterproof effect.

[0059] Secondly, in the ultrasonic scalpel handle provided in this embodiment, a waterproof component is added between the operating part of the handle and the handle body 1 to prevent liquid from entering the interior of the handle body 1 from the connection point between the operating part and the handle body 1, thereby further improving the overall waterproof performance of the ultrasonic scalpel handle and facilitating the cleaning and sterilization of the ultrasonic scalpel handle.

[0060] Specifically, the operating component is movably mounted on the handle body 1, which has a mounting groove (not shown in the figure). The operating component partially passes through the mounting groove and connects to the handle body 1, so as to drive the operating component to move and perform corresponding surgical operations when using the ultrasonic scalpel handle. The waterproof component specifically includes a flexible and deformable waterproof sleeve, which fits over the outside of the operating component. The outer periphery of the waterproof sleeve is sealed to the circumferential wall of the mounting groove, so that the operating component can be protected within the space formed between the waterproof sleeve and the handle body 1. At the same time, the waterproof sleeve can deform without affecting the normal movement of the operating component or the surgical operation. The waterproof sleeve is specifically made of soft rubber material, which can deform under pressure and return to its original shape after the pressure is released.

[0061] Specifically, in the ultrasonic scalpel handle of this embodiment, the operating components include a button assembly 4 and a grip assembly 5. Correspondingly, a first waterproof component 6 and a second waterproof component 7 are provided on the handle. The following description, in conjunction with... Figures 7 to 15 The structures of the first waterproof component 6 and the second waterproof component 7 are described in detail.

[0062] The handle body 1 has a first mounting groove. The button assembly 4 includes multiple buttons 41. The button 41 is located on the outside of the handle body 1 and is movably inserted into the first mounting groove and connected to a component inside the handle body 1. The first waterproof assembly 6 includes a first waterproof sleeve 61 with a receiving cavity facing the opening of the first mounting groove. The button assembly 4 can be movably received in the receiving cavity.

[0063] In this embodiment, the first waterproof component 6 further includes a first waterproof seat 62, which is circumferentially closed and fitted into the first mounting groove. The outer periphery of the first waterproof sleeve 61 is engaged between the first waterproof seat 62 and the circumferential wall of the first mounting groove. Specifically, the hardness of the first waterproof seat 62 is greater than that of the first waterproof sleeve 61. During installation, before the two half-shells that make up the outer shell of the handle body 1 are properly engaged, the button assembly 4 is assembled onto the handle body 1, and then the first waterproof sleeve 61 is fitted onto the outside of the button assembly 4. The outer periphery of the first waterproof sleeve 61 is then engaged into the first mounting groove by the first waterproof seat 62. Subsequently, the two half-shells are assembled accordingly. This facilitates the assembly of the first waterproof sleeve 61, avoids gaps between the first waterproof sleeve 61 and the handle body 1, and improves waterproof performance.

[0064] The handle body 1 also has a second mounting groove. The grip assembly 5 includes an operating handle 51 and a connecting rod 52 fixedly disposed together. The operating handle 51 is located on the outside of the handle body 1, and the connecting rod 52 is movably inserted into the second mounting groove and connected to the handle body 1. The second waterproof assembly 7 includes a second waterproof sleeve 71, which includes a fixing part 71a fixedly fitted on the outside of the operating handle 51, and a connecting part 71b extending from the fixing part 71a toward the handle body 1. The connecting part 71b is sealed to the circumferential groove wall of the second mounting groove. The connecting part 71b has a receiving cavity facing the opening of the second mounting groove, and the connecting rod 52 can be movably inserted into the receiving cavity. When the grip assembly 5 is driven to move relative to the handle body 1, the fixing part 71a and the operating handle 51 remain fixed together, and the connecting part 71b is located between the operating handle 51 and the handle body 1 and can be squeezed and deformed. The entire grip assembly 5 is wrapped in the second waterproof sleeve 71, preventing water from entering at the connection between the grip assembly 5 and the handle body 1.

[0065] Similarly, the second waterproof component 7 also includes a second waterproof seat 72, which is circumferentially closed and fitted into the second mounting groove, and the outer periphery of the second waterproof sleeve 71 is engaged between the second waterproof seat 72 and the circumferential groove wall of the second mounting groove.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. In the event of any contradiction or inconsistency between the definitions used herein and those contained in other published documents, the definitions used herein shall prevail.

[0067] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0068] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made based on the essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An ultrasonic scalpel handle, comprising a handle body having a mounting hole for connecting a scalpel, characterized in that: The handle also includes a power connection cable connected to the handle body. The power connection cable includes a conductive wire and a connector fixed at one end of the conductive wire. The other end of the conductive wire is electrically connected to a circuit element located in the handle body. The connector has a connection structure for connecting to an external power source. The connector can be inserted into the mounting hole.

2. The ultrasonic scalpel handle according to claim 1, characterized in that: The outer periphery of the connector has a sealing ring that extends radially outward. When the connector is inserted into the mounting hole, the outer periphery of the connector is sealed to the circumferential wall of the mounting hole through the sealing ring. The sealing ring has a plurality of rings spaced apart along the length of the connector.

3. The ultrasonic scalpel handle according to claim 2, characterized in that: The connector includes a base body having a mounting cavity, and a power receiving element and a connector fixedly disposed in the mounting cavity. The conductive wire extends from one end of the base body into the mounting cavity and is fixedly connected to the connector. The power receiving element extends from the other end of the base body into the mounting cavity. The power receiving element is fixedly connected to the connector and electrically connected to the conductive wire. The connection structure is disposed on the power receiving element.

4. The ultrasonic scalpel handle according to claim 3, characterized in that: The base body is cylindrical and is made of plastic or silicone.

5. The ultrasonic scalpel handle according to claim 3, characterized in that: The external power source has an external power cord with a connector that can be plugged into and connected to the connection structure and electrically connected to the power receiving element.

6. The ultrasonic scalpel handle according to claim 5, characterized in that: The connector has a slot for inserting at least a portion of the plug. The connection structure consists of a socket and a positioning protrusion on the power contact element. When the plug is inserted into the slot, it engages with the socket and the positioning protrusion.

7. The ultrasonic scalpel handle according to claim 3, characterized in that: The outer periphery of the seat body is also provided with an annular limiting flange that extends radially outward. When the connecting seat is inserted into the mounting hole, the annular limiting flange abuts against the handle body.

8. The ultrasonic scalpel handle according to claim 1, characterized in that: The power connection cable also includes a fixing seat, a waterproof ring, and a limiting seat that are sequentially sleeved on the conductive wire. The handle body has a connection hole that communicates with the inner cavity of the handle body. The waterproof ring is fitted into the connection hole and sealed to the circumferential wall of the connection hole. The fixing seat is located in the inner cavity of the handle body, and the limiting seat is located outside the handle body.

9. The ultrasonic scalpel handle according to claim 1, characterized in that: The handle body has a grip portion, and the power connection cable is connected to the lower part of the grip portion; the power connection cable has a first use state for connecting to the external power source, and a second use state for connecting with the mounting hole, wherein, in the first use state, the power connection cable extends downward from the lower part of the grip portion; in the second use state, the conductive wire bends forward and upward, and the connector is inserted into the mounting hole.

10. The ultrasonic scalpel handle according to any one of claims 1 to 9, characterized in that: The handle also includes an operating component movably disposed on the handle body. The handle body has a mounting groove, and the operating component passes through the mounting groove and is connected to the handle body. The handle also includes a waterproof component, which includes a flexible and deformable waterproof sleeve that fits over the outside of the operating component and is sealed to the circumferential wall of the mounting groove.

11. The ultrasonic scalpel handle according to claim 10, characterized in that: The waterproof component also includes a waterproof seat, which is circumferentially closed and fitted into the mounting groove, and the outer periphery of the waterproof sleeve is engaged between the waterproof seat and the circumferential wall of the mounting groove.

12. The ultrasonic scalpel handle according to claim 10, characterized in that: The operating component is a button assembly, which is partially inserted into the mounting groove and connected to the handle body. The waterproof sleeve has a receiving cavity facing the opening of the mounting groove, and the button assembly can be movably received in the receiving cavity.

13. The ultrasonic scalpel handle according to claim 10, characterized in that: The operating component is a grip assembly, which includes an operating handle and a connecting rod fixedly disposed together. The operating handle is located on the outside of the handle body, and the connecting rod is movably inserted into the mounting groove and connected to the handle body. The waterproof sleeve includes a fixing part fixedly fitted on the outside of the operating handle and a connecting part extending from the fixing part toward the handle body. The connecting part is sealed to the circumferential groove wall of the mounting groove, wherein the connecting part has a receiving cavity facing the opening of the mounting groove, and the connecting rod is movably inserted into the receiving cavity.

Images