A locking handle

Abstract

This application discloses a locking handle, relating to the technical field of medical devices. It includes a handle body connected to a clamping structure. The handle body is slidably and rotatably connected to an actuator, which is connected to a linkage structure. When the actuator slides, it drives the clamping structure to open and close via the linkage structure. The actuator has a locking portion, and the handle body has a locking groove for engaging with the locking portion. When unlocking is required, the actuator is rotated, disengaging the locking portion from the locking groove. The inner wall of the locking groove does not restrict the sliding of the locking portion and the actuator, allowing the actuator to drive the clamping structure to open and close via the linkage structure. When locking is required, the actuator is rotated in the opposite direction, engaging the locking portion into the locking groove. The outer surface of the locking portion engages with the inner wall of the locking groove, thereby fixing the actuator relative to the handle body.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and in particular to a locking handle. Background Technology

[0002] Handles are widely used in surgical instruments (such as laparoscopic cutting instruments and orthopedic drilling tools), interventional devices (such as catheter operating handles and puncture needle control rods), rehabilitation therapy devices (such as limb traction adjustment handles), and diagnostic devices (such as biopsy sampling handles). Their locking function is a key technical module that prevents unexpected movement of instruments, ensures the safety of diagnosis and treatment operations, and improves the accuracy of operations. It directly affects the reliability of medical staff's operation and the safety of patients' diagnosis and treatment.

[0003] The current mainstream design is an electronic locking handle. Electronic locking uses an electromagnetic switch, a motor-driven locking tongue, or a Hall sensor to trigger a locking signal. This is commonly found in the handles of electric surgical instruments. For example, pressing a locking button activates the electromagnetic lock to fix the operating components. Its advantage is convenient operation, but it relies on a power supply system and is prone to failure in scenarios such as power outages during surgery or circuit failures caused by immersion in disinfectant. Furthermore, the reliability of the locking is affected by the lifespan of electronic components and needs improvement. Summary of the Invention

[0004] The purpose of this application is to provide a locking handle for facilitating the unlocking or locking of the handle.

[0005] The locking handle provided in this application adopts the following technical solution: it includes a handle body, the handle body is connected to a clamping structure, the handle body is slidably and rotatably connected to an actuator, the actuator is connected to a linkage structure, when the actuator slides, the actuator drives the clamping structure to open and close through the linkage structure, the actuator is provided with a locking part, the handle body is provided with a locking groove, and the locking groove is used to engage with the locking part.

[0006] By adopting the above technical solution, when unlocking is required, rotating the actuator causes the locking part to disengage from the locking groove. The inner wall of the locking groove does not restrict the sliding of the locking part and the actuator, allowing the actuator to drive the clamping structure to open and close via the linkage structure. When locking is required, rotating the actuator in the opposite direction causes the locking part to engage with the locking groove. The outer surface of the locking part engages with the inner wall of the locking groove, thereby fixing the actuator relative to the handle body. This prevents unexpected instrument movements, ensures the safety of diagnostic and treatment operations, improves operational accuracy, and is independent of the power supply system, avoiding the failure of electronic locking handles in scenarios such as power outages during surgery or circuit failures caused by immersion in disinfectant.

[0007] Optionally, the handle body is provided with a groove, and the groove is provided with a plurality of protrusions at intervals, with the snap-fit ​​groove formed between two adjacent protrusions.

[0008] By adopting the above technical solution, in the unlocked state, the actuator can slide according to actual needs. When locking is required, the actuator can correspond to any slot without needing to move to a specific position to fix the actuator, thus improving the efficiency of actuator fixation. When the clamping structure holds a thin item, the actuator needs to move to a position farther from the clamping structure to clamp the item; when the clamping structure holds a thick item, the actuator needs to move to a position closer to the clamping structure to clamp the item, which is suitable for the opening and closing angle of the clamping structure.

[0009] Optionally, there are two snap-fit ​​parts, and the number of the grooves corresponds one-to-one with the number of snap-fit ​​parts. The snap-fit ​​parts engage with the snap-fit ​​grooves of the corresponding grooves.

[0010] By adopting the above technical solution, when locking is required, the two locking parts snap into the corresponding locking slots, increasing the contact area between the locking parts and the handle body and improving the locking effect.

[0011] Optionally, one end of the snap-fit ​​portion is provided with two guide surfaces, and the distance between the two guide surfaces gradually increases in the direction closer to the snap-fit ​​portion.

[0012] By adopting the above technical solution, when locking is required, even if there is a deviation between the locking part and the locking groove, during the rotation of the actuator, the inner wall of the locking groove abuts against the guide surface and guides the actuator to move, thereby making the locking part correspond to the locking groove and realizing that the locking part can quickly lock into the locking groove.

[0013] Optionally, the linkage structure includes a snap-fit ​​component and a linkage rod connected to the snap-fit ​​component. The snap-fit ​​component engages with the actuator, and the actuator is rotatably engaged relative to the snap-fit ​​component. The handle body is provided with a sliding groove communicating with the snap-fit ​​groove, and the sliding groove is used to slide with the snap-fit ​​component. The end of the linkage rod away from the snap-fit ​​component is connected to the clamping structure.

[0014] By adopting the above technical solution, during unlocking, the moving actuator, locking member, and linkage rod move along with the movement of the actuator, thereby realizing the opening and closing of the clamping structure. The sliding cooperation between the locking member and the slide groove guides and limits the sliding of the locking member, linkage rod, and actuator, thereby improving the stability of the sliding of the locking member, linkage rod, and actuator, and improving the opening and closing effect of the clamping structure.

[0015] Optionally, the snap-fit ​​component includes a connecting block and two sets of elastic arms spaced apart on the connecting block. Each set of elastic arms includes two elastic arms spaced apart on the connecting block. Each side of the two elastic arms facing away from each other is provided with a limiting part. The actuator is provided with a receiving groove for the connecting block, the elastic arms and the limiting parts to snap into. The inner wall of the receiving groove is connected to two limiting plates that correspond one-to-one with the limiting parts. Each limiting part is provided with an inclined surface for abutting against the limiting plate.

[0016] By adopting the above technical solution, when the snap-fit ​​component and the actuator need to be snapped together, the actuator corresponds to the connecting block. Moving the actuator towards the connecting block causes the connecting block and the elastic arm to snap into the receiving groove. The limiting plate abuts against the corresponding limiting part and drives the two limiting parts to move towards each other. The elastic arm is compressed, causing elastic deformation and maintaining a tendency to elastically reset until the limiting part is completely snapped into the receiving groove. The elastic arm elastically resets and drives the limiting part to reset, allowing the limiting part to correspond with the limiting plate. The limiting plate restricts the limiting part from disengaging from the receiving groove, thus fixing the connecting block and the elastic arm within the receiving groove. Because the connecting block slides into the groove, it prevents the actuator from driving the connecting block to rotate during rotation.

[0017] Optionally, the slide is located between the two sets of elastic arms, and the maximum distance between the two limiting portions in each set of elastic arms is greater than the width of the slide.

[0018] By adopting the above technical solution, when installing the snap-fit ​​component, since the maximum distance between the two limiting parts is greater than the width of the slide groove, the operator needs to apply force to the two limiting parts in a direction that brings them closer together. The elastic arm is compressed and undergoes elastic deformation, maintaining a tendency to elastically reset, thus shortening the distance between the two limiting parts. This allows the two limiting parts to pass smoothly through the slide groove. When the two limiting parts of one set have completely passed through the slide groove, the elastic arm elastically resets, forcing the corresponding limiting part to reset, making the maximum distance between the two limiting parts greater than the width of the slide groove. The handle body acts on the two limiting parts, thereby preventing the snap-fit ​​component from detaching from the handle body due to gravity, facilitating the subsequent assembly of the snap-fit ​​component and the actuator.

[0019] Optionally, the handle body is provided with a clearance groove communicating with the slide groove. The clearance groove is used for the locking part to pass through, and the locking part can abut against the inner wall of the slide groove during the rotation of the actuator.

[0020] By adopting the above technical solution, the clearance groove provides space for the movement of the locking part, allowing the locking part to move smoothly to the slide groove. During the rotation of the actuator, the locking part can abut against the inner wall of the slide groove, limiting the rotation angle of the actuator and preventing excessive rotation.

[0021] Optionally, the clamping structure includes a sleeve connected to the handle body, a first clamping part connected to the sleeve, a support rod connected to the first clamping part, a second clamping part rotatably connected to the support rod, and a connecting rod hinged to the second clamping part, wherein one end of the connecting rod away from the second clamping part is hinged to the linkage rod.

[0022] By adopting the above technical solution, when the linkage rod moves, the linkage rod drives the connecting rod to rotate, and the connecting rod drives the second clamping part to rotate around the support rod around the axis of the support rod, thereby realizing the opening and closing of the second clamping part and the first clamping part.

[0023] Optionally, the sleeve is connected to a mounting block, and the handle body is provided with a mounting groove for engaging with the mounting block. The inner wall of the mounting groove is provided with two elastic support portions for abutting against the mounting block.

[0024] By adopting the above technical solution, when installing the sleeve, the mounting block corresponds to the mounting groove. The mounting block is moved towards the mounting groove, and the mounting block abuts against the elastic support. The elastic support is compressed and undergoes elastic deformation and maintains the tendency to elastically return to its original position. The distance between the two elastic support parts increases until the mounting block is completely inserted into the mounting groove. The two elastic support parts elastically return to their original position and support the mounting block, thereby fixing the mounting block.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. When unlocking is required, rotate the actuator, and the locking part disengages from the locking groove. The inner wall of the locking groove does not restrict the sliding of the locking part and the actuator, allowing the actuator to drive the clamping structure to open and close via the linkage mechanism. When locking is required, rotate the actuator in the opposite direction, and the locking part engages with the locking groove. The outer surface of the locking part engages with the inner wall of the locking groove, thereby fixing the actuator relative to the handle body. This prevents unexpected instrument movements, ensures the safety of diagnostic and treatment operations, improves operational accuracy, and does not rely on a power supply system, avoiding the failure issues of electronic locking handles in scenarios such as power outages during surgery or circuit failures caused by immersion in disinfectant.

[0026] 2. The handle body serves to limit the two limiting parts, thereby preventing the locking parts from detaching from the handle body due to gravity, and facilitating the subsequent assembly of the locking parts and the actuators. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0028] Figure 2 This is one of the cross-sectional views of an embodiment of this application, showing the clamping structure.

[0029] Figure 3 yes Figure 2 An enlarged view of region A.

[0030] Figure 4 This is a second cross-sectional view of an embodiment of this application, showing the mounting block.

[0031] Figure 5 yes Figure 2 A magnified view of region B.

[0032] Figure 6 This is a schematic diagram of the overall structure of the actuator.

[0033] Figure 7 yes Figure 6 A sectional view.

[0034] Figure 8 This is a schematic diagram of the overall structure of the actuator and linkage mechanism.

[0035] Figure 9 This is a schematic diagram of the overall structure of the linkage mechanism.

[0036] Figure 10 yes Figure 9 A magnified view of region C.

[0037] Figure 11 Partial structural schematic diagrams of embodiments of this application.

[0038] Figure 12 yes Figure 11 A magnified view of region D.

[0039] Explanation of reference numerals in the attached drawings: 1. Handle body; 11. Mounting groove; 12. Elastic support part; 13. Groove; 14. Protrusion; 15. Snap-fit ​​groove; 16. Slide groove; 17. Clearance groove; 2. Clamping structure; 21. Sleeve; 211. Mounting block; 22. First clamping part; 23. Support rod; 24. Second clamping part; 25. Connecting rod; 3. Actuator; 31. Through hole; 32. Snap-fit ​​part; 321. Guide surface; 33. Receiving groove; 34. Limiting plate; 4. Linkage structure; 41. Snap-fit ​​part; 411. Connecting block; 4111. Positioning groove; 4112. Clearance groove; 412. Elastic arm; 4121. Limiting part; 4122. Inclined surface; 42. Linkage rod; 421. Positioning block. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1 -Appendix Figure 12 This application will be described in further detail.

[0041] This application discloses a locking handle.

[0042] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the device includes a handle body 1, which is connected to a clamping structure 2. The clamping structure 2 includes a sleeve 21, a first clamping part 22 fixedly connected to one end of the sleeve 21, a support rod 23 fixedly connected to the first clamping part 22, a second clamping part 24 rotatably connected to the support rod 23, and a connecting rod 25 hinged to the second clamping part 24. A mounting block 211 is fixedly connected to the end of the sleeve 21 away from the first clamping part 22. A mounting groove 11 is formed on the lower surface of the handle body 1. The mounting block 211 is inserted into the mounting groove 11 and fits against the inner wall of the mounting groove 11. Two elastic support parts 12 are fixedly connected to the inner wall of the mounting groove 11. When the mounting block 211 is installed, the elastic support parts 12 elastically reset and maintain their elastic reset tendency, increasing the distance between the two elastic support parts 12 until the mounting block 211 is completely inserted into the mounting groove 11. The two elastic support parts 12 then elastically reset and support the mounting block 211, thereby achieving the fixed installation of the mounting block 211.

[0043] Combination Figure 5 , Figure 6 and Figure 7 As shown, the handle body 1 is slidably and rotatably connected to an actuator 3. The actuator 3 has a through hole 31 through which a portion of the handle body 1 can pass. Two engaging portions 32 are arranged opposite each other on the inner wall of the through hole 31. The handle body 1 has grooves 13 corresponding to the engaging portions 32. Several protrusions 14 are spaced apart on the inner wall of the grooves 13. Engaging grooves 15 are formed between adjacent protrusions 14, and the closest distance between adjacent protrusions 14 is equal. When the actuator 3 is rotated, the engaging portion 32 can engage into the engaging groove 15, and the outer surface of the engaging portion 32 engages with the inner wall of the engaging groove 15. Two guide surfaces 321 are provided at the end of the engaging portion 32 near the corresponding groove 13, and the distance between the two guide surfaces 321 gradually increases towards the engaging portion 32.

[0044] Combination Figure 8 , Figure 9 and Figure 10As shown, the actuator 3 is connected to the linkage structure 4. When the actuator 3 slides, it drives the clamping structure 2 to open and close through the linkage structure 4. The linkage structure 4 includes a snap-fit ​​component 41 and a linkage rod 42 detachably connected to the snap-fit ​​component 41. The end of the linkage rod 42 away from the snap-fit ​​component 41 passes through the mounting block 211 and the sleeve 21, and the linkage rod 42 is hinged to the connecting rod 25. The snap-fit ​​component 41 includes a connecting block 411 and two sets of elastic arms 412 fixedly connected to the connecting block 411 at intervals. The handle body 1 has a sliding groove 16, and the groove 13 communicates with the sliding groove 16. The sliding groove 16 is located between the two grooves 13. The connecting block 411 snaps into the sliding groove 16 and slides with the sliding groove 16. The handle body 1 has relief grooves 17 corresponding to the locking parts 32. Both relief grooves 17 are connected to the slide grooves 16. The locking parts 32 pass through the relief grooves 17 and move to the slide grooves 16. During rotation, the locking parts 32 can abut against the inner wall of the slide grooves 16. The end of the linkage rod 42 away from the connecting rod 25 is fixedly connected to a positioning block 421. One side of the connecting block 411 has a positioning groove 4111 and a relief groove 4112 communicating with the positioning groove 4111. The positioning block 421 is locked into the positioning groove 4111 and fits against the inner wall of the positioning groove 4111. Part of the linkage rod 42 is locked into the relief groove 4112 and fits against the inner wall of the relief groove 4112.

[0045] Combination Figure 8 , Figure 9 and Figure 10 As shown, each set of elastic arms 412 includes two elastic arms 412 spaced apart and connected to the connecting block 411. A limiting part 4121 is fixedly connected to the opposite side of each elastic arm 412, and the limiting part 4121 is located at the end of the elastic arm 412 away from the connecting block 411. A receiving groove 33 communicating with the through hole 31 is provided on one side of the actuator 3, and the connecting block 411, elastic arms 412, and limiting part 4121 can all be inserted into the receiving groove 33. The inner wall of the receiving groove 33 is fixedly connected to two limiting plates 34 corresponding to the limiting parts 4121. The limiting parts 4121 have an inclined surface 4122 on the side near the connecting block 411. During the process of installing the snap-fit ​​part 41 into the actuator 3, the limiting plate 34 abuts against the corresponding limiting part 4121 and drives the two limiting parts 4121 to move towards each other. The elastic arm 412 is compressed and undergoes elastic deformation and maintains the tendency of elastic reset until the limiting part 4121 is completely snapped into the receiving groove 33. The elastic arm 412 elastically resets and drives the limiting part 4121 to reset. The limiting part 4121 can correspond to the limiting plate 34. The limiting plate 34 plays a role in restricting the limiting part 4121 from leaving the receiving groove 33, so that the connecting block 411 and the elastic arm 412 are located in the receiving groove 33, and the actuator 3 can rotate relative to the snap-fit ​​part 41.

[0046] Combination Figure 11 and Figure 12As shown, the slide groove 16 is located between two sets of elastic arms 412. The maximum distance between the two limiting parts 4121 in each set of elastic arms 412 is greater than the width of the slide groove 16. The maximum distance between the two limiting parts 4121 is D1, and the width of the slide groove 16 is D2.

[0047] The implementation principle of a locking handle in this application embodiment is as follows: When unlocking is required, the actuator 3 is rotated, and the locking part 32 disengages from the locking groove 15. The inner wall of the locking groove 15 does not restrict the sliding of the locking part 32 and the actuator 3. The actuator 3 is moved, and the locking part 41 and the linkage rod 42 move with the actuator 3, thereby realizing the opening and closing of the clamping structure 2. When the two first clamping parts 22 and the second clamping parts 24 clamp an item and locking is required, the actuator 3 is moved away from the first clamping part 22. The actuator 3 drives the clamp of the second clamping part 24 to rotate towards the clamp of the first clamping part 22 through the connecting rod 25 and the linkage rod 42, so that the first clamping parts 22 and the second clamping parts 24 clamp the item. The opening and closing angle of the first clamping part 22 and the second clamping part 24 is realized according to the thickness of the item, and the locking part 32 will be aligned with the corresponding locking groove 15. Rotating the actuator 3 in the opposite direction causes the locking part 32 to engage with the locking groove 15. The outer surface of the locking part 32 engages with the inner wall of the locking groove 15, thereby achieving a more stable clamping of the actuator 3 compared to the handle body 1. This means that the first clamping part 22 and the second clamping part 24 can clamp the object more stably. This prevents unexpected movement of the instrument, ensures the safety of the diagnostic and treatment operation, improves the accuracy of the operation, and does not rely on a power supply system, avoiding the failure of electronic locking handles in scenarios such as power outages during surgery or circuit failures caused by immersion in disinfectant.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A locking handle, characterized in that: The device includes a handle body (1), which is connected to a clamping structure (2). The handle body (1) is slidably and rotatably connected to an actuator (3). The actuator (3) is connected to a linkage structure (4). When the actuator (3) slides, the actuator (3) drives the clamping structure (2) to open and close through the linkage structure (4). The actuator (3) is provided with a snap-fit ​​part (32). The handle body (1) is provided with a snap-fit ​​groove (15). The snap-fit ​​groove (15) is used to snap-fit ​​with the snap-fit ​​part (32).

2. The locking handle according to claim 1, characterized in that: The handle body (1) is provided with a groove (13), and the groove (13) is provided with a plurality of protrusions (14) spaced apart, and the snap-fit ​​groove (15) is formed between two adjacent protrusions (14).

3. The locking handle according to claim 2, characterized in that: There are two snap-fit ​​parts (32), and the number of grooves (13) corresponds one-to-one with the snap-fit ​​parts (32). The snap-fit ​​parts (32) engage with the snap-fit ​​grooves (15) of the corresponding grooves (13).

4. The locking handle according to claim 1, characterized in that: One end of the snap-fit ​​part (32) is provided with two guide surfaces (321), and the distance between the two guide surfaces (321) gradually increases in the direction closer to the snap-fit ​​part (32).

5. The locking handle according to claim 1, characterized in that: The linkage structure (4) includes a snap-fit ​​member (41) and a linkage rod (42) connected to the snap-fit ​​member (41). The snap-fit ​​member (41) engages with the actuator (3). The actuator (3) can rotate relative to the snap-fit ​​member (41). The handle body (1) is provided with a sliding groove (16) communicating with the snap-fit ​​groove (15). The sliding groove (16) is used to slide with the snap-fit ​​member (41). The end of the linkage rod (42) away from the snap-fit ​​member (41) is connected to the clamping structure (2).

6. The locking handle according to claim 5, characterized in that: The snap-fit ​​component (41) includes a connecting block (411) and two sets of elastic arms (412) spaced apart on the connecting block (411). Each set of elastic arms (412) includes two elastic arms (412) spaced apart on the connecting block (411). Each side of the two elastic arms (412) facing away from each other is provided with a limiting part (4121). The actuator (3) is provided with a receiving groove (33). The receiving groove (33) is used for the connecting block (411), the elastic arms (412) and the limiting part (4121) to be snapped into. The inner wall of the receiving groove (33) is connected to two limiting plates (34) that correspond one-to-one with the limiting part (4121). Each limiting part (4121) is provided with an inclined surface (4122). The inclined surface (4122) is used to abut against the limiting plate (34).

7. The locking handle according to claim 6, characterized in that: The groove (16) is located between two sets of elastic arms (412), and the maximum distance between the two limiting parts (4121) in each set of elastic arms (412) is greater than the width of the groove (16).

8. The locking handle according to claim 5, characterized in that: The handle body (1) is provided with a clearance groove (17) that communicates with the slide groove (16). The clearance groove (17) is used for the locking part (32) to pass through. During the rotation of the actuator (3), the locking part (32) can abut against the inner wall of the slide groove (16).

9. The locking handle according to claim 5, characterized in that: The clamping structure (2) includes a sleeve (21) connected to the handle body (1), a first clamping part (22) connected to the sleeve (21), a support rod (23) connected to the first clamping part (22), a second clamping part (24) rotatably connected to the support rod (23), and a connecting rod (25) hinged to the second clamping part (24). One end of the connecting rod (25) away from the second clamping part (24) is hinged to the linkage rod (42).

10. The locking handle according to claim 9, characterized in that: The sleeve (21) is connected to the mounting block (211), and the handle body (1) is provided with a mounting groove (11). The mounting groove (11) is used to cooperate with the mounting block (211). The inner wall of the mounting groove (11) is provided with two elastic support parts (12), which are used to abut against the mounting block (211).

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