Handle assembly for a hand-held medical instrument

Abstract

This utility model discloses a handle assembly for easy rotational operation, belonging to the field of medical device technology. It includes a core rod, a core rod sleeve, a slider, a push tube, and a wristband. The core rod sleeve is fixedly connected to the front end of the core rod. The slider is slidably connected to the core rod along the axial direction of the core rod sleeve. The rear end of the push tube passes through the core rod sleeve and is fixedly connected to the slider. The front end of the push tube is fixedly connected to a cable for driving the actuator. The wristband is installed at the rear end of the core rod and is rotatable relative to the core rod. The wristband has an insertion hole, and the outer circumferential surface of the slider has an annular arc groove. This handle assembly allows medical workers to operate with one hand, and the thumb position remains unchanged after the angle is adjusted. Medical workers can adjust the slider position more conveniently and comfortably, greatly facilitating operation and providing a good user experience. This utility model also discloses a handheld medical device with this handle assembly.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular, to a handle assembly and a handheld medical device that are easy to rotate. Background Technology

[0002] Handheld medical devices include sampling forceps, hemostatic clips, and catheter cutting devices. Sampling forceps are instruments used in the medical field to collect samples of human tissue, cells, or lesions, primarily for pathological examination and diagnosis. Hemostatic clips are medical devices used in microsurgery to clamp blood vessels or tissues. Catheter cutting devices are medical devices used to cut off portions of plastic catheters lodged in the patient's body to meet surgical needs. Handheld medical devices generally have a relatively uniform structure, typically including a handle assembly, a pull cable, and an actuator assembly. The front and rear ends of the pull cable are connected to the actuator assembly and the handle assembly, respectively. During use, medical personnel operate the handle assembly, causing the actuator assembly to perform actions such as sampling, hemostasis, and catheter cutting under the actuation of the pull cable, thereby achieving the surgical objective.

[0003] Currently, most handle assemblies consist of a core rod, a slip ring, and a wristband. The slip ring is slidably connected to the core rod and is used for fixed connection to the rear end of the cable. When the slip ring slides along the axial direction of the core rod, it can pull the cable, thereby controlling the actuator at the front end of the cable to perform corresponding actions. The wristband is integrally formed at the rear end of the core rod. In use, the thumb is inserted through the through hole of the wristband, and the middle and index fingers are inserted through the two through holes on the slip ring, which allows the slip ring to be operated and slid.

[0004] In actual use, medical staff usually need to adjust the angle of the actuator. The usual way to operate is to rotate the entire handle assembly. Although this method can achieve the purpose, after rotating the entire handle assembly, the position of the slip ring and the through hole on the handle for finger insertion changes. At this time, medical staff often cannot slide the slip ring on the handle assembly at a more convenient and comfortable angle, which makes the operation extremely inconvenient and the user experience poor. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a handle assembly that is convenient for medical workers to rotate is provided.

[0006] It is also necessary to provide a handheld medical device with the aforementioned handle assembly.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a handle assembly that is easy to rotate, including a core rod, a core rod sleeve, a slider, a booster tube, and a wristband. The core rod sleeve is fixedly connected to the front end of the core rod. The slider is slidably connected to the core rod along the axial direction of the core rod sleeve. The rear end of the booster tube passes through the core rod sleeve and is fixedly connected to the slider. The front end of the booster tube is fixedly connected to a cable for driving the actuator. The wristband is installed at the rear end of the core rod and is rotatable relative to the core rod. The wristband has an insertion hole. The outer circumferential surface of the slider is provided with an annular arc groove.

[0008] Furthermore, a connecting post is connected to the rear end of the core rod, a U-shaped groove is provided on the connecting post, a locking block is protruding from the rear end of the connecting post, a connecting hole is provided at the front end of the wristband, the connecting post is inserted into the connecting hole, and the locking block is locked onto the wristband.

[0009] Furthermore, the rear end of the card block is provided with a wedge surface.

[0010] Furthermore, the rear end face of the core rod forms a supporting plane, the wristband has a through groove communicating with the connecting hole, the front end face of the wristband abuts against the supporting plane, and the locking block is locked on the groove wall of the through groove.

[0011] Furthermore, the slider is sleeved on the outside of the core rod, and a limiting groove is formed on the side wall of the core rod along the axial direction. A limiting block is fixedly provided inside the slider, and the limiting block and the limiting groove are slidably connected.

[0012] Furthermore, the slider is composed of two mutually interlocking semi-circular structures, and each semi-circular structure is fixedly connected with a docking block. The two docking blocks are arranged correspondingly, and the limiting block is composed of two docking blocks.

[0013] Furthermore, between the two semicircular structures, one of the semicircular structures is provided with a buckle, and the other semicircular structure is provided with a slot, and the buckle and the slot are engaged and connected to each other.

[0014] Furthermore, a connecting tube protrudes from the front end of the core rod, and a notch for installing a spring tube is provided axially on the side wall of the connecting tube. The core rod is sleeved on the outside of the connecting tube, and an anti-rotation block protrudes from the inner wall of the front end of the core rod sleeve. The anti-rotation block can be inserted into the notch.

[0015] Furthermore, the rear end face of the core rod sleeve is provided with an alignment groove, and the front end face of the core rod is provided with a groove. The alignment groove corresponds to the anti-rotation block, and the groove is aligned with the notch.

[0016] This utility model also provides a handheld medical device, including a handle assembly that is easy to rotate as described in any of the preceding claims, and further including a cable and an actuator, wherein the rear end of the cable is connected to the handle assembly and the front end of the cable is connected to the actuator.

[0017] The beneficial effects of this utility model are as follows: When the angle of the actuator needs to be adjusted, the user can rely on the friction between the slider and the middle and index fingers to rotate the slider. At this time, the core rod, along with the push tube, the cable and the actuator, rotate together, realizing the function of adjusting the angle of the actuator. Compared with the existing rotation operation method, medical staff can operate with one hand, and after the angle is adjusted, the thumb position remains unchanged. Medical staff can adjust the position of the slider more conveniently and comfortably, which greatly facilitates the operation and provides a good user experience. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a perspective view of the handle assembly for easy rotation operation according to this utility model;

[0020] Figure 2 yes Figure 1 An exploded view of the handle assembly for easy rotational operation is shown.

[0021] Figure 3 yes Figure 1 The front view of the handle assembly for easy rotation is shown.

[0022] Figure 4 yes Figure 3 The handle assembly shown is a cross-sectional view along AA, which facilitates rotational operation.

[0023] Figure 5 yes Figure 1 A perspective view of the core rod sleeve in the handle assembly designed for easy rotation.

[0024] In the diagram: 1. Core rod, 11. Connecting column, 111. U-shaped groove, 112. Locking block, 1121. Wedge surface, 12. Supporting plane, 13. Limiting groove, 14. Connecting tube, 141. Notched groove, 142. Snap ring, 15. Groove, 2. Core rod sleeve, 21. Ring groove, 22. Anti-rotation block, 23. Alignment groove, 3. Sliding block, 31. Arc groove, 310. Limiting block, 32. Semi-circular structure, 33. Connecting block, 321. Buckle, 322. Snap groove, 323. Positioning groove, 324. Receiving groove, 4. Push tube, 41. Limiting structure, 411. Rectangular block, 412. Round tube, 5. Hand ring, 510. Insertion hole, 51. Connecting hole, 52. Through groove, 6. Spring tube. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0026] Please see Figures 1-5 This utility model provides a handle assembly for easy rotation operation, including a core rod 1, a core rod sleeve 2, a slider 3, a booster tube 4, and a wristband 5. The core rod sleeve 2 is fixedly connected to the front end of the core rod 1. The slider 3 is slidably connected to the core rod 1 along the axial direction of the core rod sleeve 2. The rear end of the booster tube 4 passes through the core rod sleeve 2 and is fixedly connected to the slider 3. The front end of the booster tube 4 is fixedly connected to a cable for driving the actuator. The wristband 5 is installed at the rear end of the core rod 1 and is rotatable relative to the core rod 1. The wristband 5 has an insertion hole 510. The outer circumferential surface of the slider 3 is provided with an annular arc groove 31.

[0027] This utility model provides a handle assembly for easy rotational operation. During operation, healthcare workers insert their thumb into the socket 510 of the wristband 5, while their middle and index fingers grip the arc-shaped groove 31 on the outer side of the slider 3. When controlling the actuator in front, the slider 3 can be held in place by the gripping force of the middle and index fingers, and then slid along the axis of the core rod 1. When adjusting the angle of the actuator, the user can rotate the slider 3 using the friction between the slider 3 and the middle and index fingers. At this time, the core rod 1, along with the push tube 4, the cable, and the actuator, rotate together, achieving the function of adjusting the angle of the actuator. Compared to existing rotational operation methods, healthcare workers can operate with one hand, and the thumb position remains unchanged after the angle is adjusted. This allows for more convenient and comfortable adjustment of the slider position, greatly facilitating operation and providing a better user experience.

[0028] Please see Figure 2In this embodiment, a connecting post 11 protrudes from the rear end of the core rod 1 along the axial direction of the core rod 1. A U-shaped groove 111 is opened at the rear end of the connecting post 11, and the U-shaped groove 111 passes through the opposite side walls of the connecting post 11. A locking block 112 protrudes radially outward from the rear end of the connecting post 11. A connecting hole 51 is opened at the front end of the wristband 5. The connecting hole 51 and the connecting post 11 cooperate with each other. When in use, the rear end of the connecting post 11 is inserted into the connecting hole 51, and the locking block 112 passes through the connecting hole 51 and is locked on the wristband 5. At this time, the connecting post 11 cannot move axially relative to the wristband 5, but can only rotate relative to the wristband 5. During installation, the rear end of the connecting post 11 is pressed inward. Due to the U-shaped groove 111, the structural strength of the rear end of the connecting post 11 is reduced. By pressing, the rear end of the connecting post 11 can be easily deformed and moved inward. At this time, the rear end of the connecting post 11 can be passed through the connecting hole 51, and finally the locking block 112 passes through the connecting hole 51 and is locked onto the wristband 5 when the connecting post 11 is reset. In this embodiment, the core rod 1 and the connecting post 11 are integrally formed and made of plastic, so that the rear end of the connecting post 11 deforms after being pressed, and the connecting post 11 can be reset after the pressure is released.

[0029] Furthermore, the rear end of the locking block 112 is provided with a wedge surface 1121. The wedge surface 1121 can provide good guidance for the insertion of the connecting post 11 into the connecting hole 51, which is conducive to the rapid assembly between the core rod 1 and the wristband 5.

[0030] In addition, both the connecting post 11 and the core rod 1 are cylindrical structures and are coaxially arranged. The outer diameter of the connecting post 11 is smaller than that of the core rod 1. The rear end face of the core rod 1 forms a supporting plane 12. The wristband 5 has a through groove 52 connected to the connecting hole 51. The front end face of the wristband 5 abuts against the supporting plane 12. The locking block 112 is locked on the groove wall of the through groove 52. At this time, the axial position of the wristband 5 is restricted, and it cannot move relative to the core rod 1, but can only rotate relative to the core rod 1.

[0031] The slider 3 is roughly cylindrical in shape and is fitted onto the outside of the core rod 1. A limiting groove 13 is axially formed on the side wall of the core rod 1, penetrating both opposite side walls. A limiting block 310 is fixedly installed inside the slider 3, engaging with the limiting groove 13. The limiting block 310 passes through the limiting groove 13 and can slide along the length of the limiting groove 13. By setting the limiting block 310 to engage with the limiting groove 13, the slider 3 can only slide along the limiting groove 13 and cannot rotate relative to the core rod 1.

[0032] In this embodiment, the slider 3 is composed of two mutually enclosing semi-circular structures 32, and each semi-circular structure 32 is fixedly connected with a docking block 33. The two docking blocks 33 are arranged correspondingly. When the two semi-circular structures 32 are enclosing each other, the two docking blocks 33 abut against each other. The limiting block 310 is composed of two docking blocks 33.

[0033] In addition, to achieve the connection between the two semicircular structures 32, one semicircular structure 32 is provided with a buckle 321, and the other semicircular structure 32 is provided with a slot 322. The buckle 321 and the slot 322 engage with each other, thereby achieving a fixed connection between the two semicircular structures 32. In this embodiment, for one semicircular structure 32, a buckle 321 is provided on one side and a slot 322 is provided on the other side. In this way, both sides of the semicircular structure 32 are fixed by snap-fit, thereby improving the connection stability.

[0034] The rear end of the booster tube 4 is fixedly connected to the limiting block 310. In this embodiment, positioning grooves 323 and receiving grooves 324 located on opposite sides of the two semi-circular structures 32 are provided on their respective surfaces. The positioning grooves 323 and receiving grooves 324 are interconnected. The rear end of the booster tube 4 is fixedly provided with a limiting structure 41. The limiting structure 41 includes a rectangular block 411 and a circular tube 412 connected to opposite sides of the rectangular block 411. The rectangular block 411 cooperates with the positioning groove 323, and the circular tube 412 is received in the receiving groove 324. The end of the circular tube 412 abuts against the side wall of the end of the receiving groove 314. Thus, the receiving groove 314 can prevent the circular tube 412 from moving axially, while the positioning groove 323 can prevent the rectangular block 411 from rotating relative to the limiting block 310, and finally fix the booster tube 4 on the limiting block 310. During assembly, after the two semi-circular structures 32 interlock, the various parts on the limiting structure 41 are located in the positioning groove 323 and the receiving groove 324, which facilitates the assembly operation.

[0035] A connecting tube 14 protrudes axially from the front end of the core rod 1. The connecting tube 14 is integrally formed with the core rod 1. The core rod sleeve 2 is fixedly sleeved on the outside of the connecting tube 14. A spring tube 6 is fixedly installed inside the connecting tube 14. The front end of the spring tube 6 passes through the front end of the core rod sleeve 2 and is sleeved on the outside of the booster tube 4. In this embodiment, a notch 141 is formed axially on the side wall of the connecting tube 14. The rear end of the spring tube 6 is installed inside the connecting tube 14 through the notch 141. When the core rod sleeve 2 is sleeved on the outside of the connecting tube 14, it can prevent the spring tube 6 from coming out of the notch 141. In a specific embodiment, a retaining ring 142 protrudes from the outer wall of the connecting tube 14, and an annular groove 21 is recessed on the inner wall of the rear end of the core rod sleeve 2. The fixed connection between the core rod sleeve 2 and the core rod 1 is achieved through the engaging connection between the retaining ring 142 and the groove 21.

[0036] In addition, to prevent the core sleeve 2 from rotating relative to the connecting pipe 14 when it is installed on the connecting pipe 14, an anti-rotation block 22 is protruding on the inner wall of the front end of the core sleeve 2. The anti-rotation block 22 can be inserted into the notch 141. During assembly, the anti-rotation block 22 is aligned with the opening at the front end of the notch 141, and then the core sleeve 2 is moved axially so that the core sleeve 2 can be fitted onto the connecting pipe 14. At the same time, the anti-rotation block 22 enters into the notch 141. Under the limiting action of the anti-rotation block 22, the core sleeve 2 cannot rotate relative to the connecting pipe 14.

[0037] Furthermore, to facilitate rapid assembly, the rear end face of the core rod sleeve 2 is provided with an alignment groove 23, and the front end face of the core rod 1 is provided with a groove 15. The alignment groove 23 is aligned with the anti-rotation block 22, and the groove 15 is aligned with the notch 141. Therefore, when the alignment groove 23 is aligned with the groove 15, the anti-rotation block 22 is aligned with the notch 141, which makes it convenient and quick to install the core rod sleeve 2 on the core rod 1.

[0038] This utility model also provides a handheld medical device, which includes the aforementioned handle assembly for easy rotation, a pull cable, and an execution component. The rear end of the pull cable is connected to the handle assembly, and the front end is connected to the execution component. Operating the handle assembly allows the execution component to perform corresponding action commands under the influence of the pull cable. The pull cable is made of steel wire. The execution component can be a cutting component as described in Chinese patent document CN219230040U (Patent Title: An Endoscopic Catheter Cutting Device), in which case the handheld medical device is an endoscopic catheter cutting device used to cut catheters; or it can be a forceps assembly as described in Chinese patent document CN221205502U (Patent Title: A Disposable Endoscopic Sampling Forceps with Rotatable Forceps), in which case the handheld medical device is an endoscopic sampling forceps used to extract a certain amount of diseased tissue for pathological examination. The execution component can be selected according to medical needs.

[0039] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A handle assembly for facilitating rotational operation, characterized by: The device includes a core rod, a core rod sleeve, a slider, a booster tube, and a wristband. The core rod sleeve is fixedly connected to the front end of the core rod. The slider is slidably connected to the core rod along the axial direction of the core rod sleeve. The rear end of the booster tube passes through the core rod sleeve and is fixedly connected to the slider. The front end of the booster tube is fixedly connected to a cable used to drive the actuator. The wristband is installed at the rear end of the core rod and is rotatable relative to the core rod. The wristband has an insertion hole. The outer circumferential surface of the slider has an annular arc groove.

2. The handle assembly facilitating rotational operation of claim 1, wherein: The rear end of the core rod is connected to a connecting post, the connecting post has a U-shaped groove, the rear end of the connecting post has a protruding locking block, the front end of the wristband has a connecting hole, the connecting post is inserted into the connecting hole, and the locking block is locked onto the wristband.

3. The handle assembly facilitating rotational operation of claim 2, wherein: The rear end of the card block is provided with a wedge surface.

4. The handle assembly facilitating rotational operation of claim 2, wherein: The rear end face of the core rod forms a supporting plane, the wristband has a through groove communicating with the connecting hole, the front end face of the wristband abuts against the supporting plane, and the locking block is locked on the groove wall of the through groove.

5. The handle assembly facilitating rotational operation of claim 1, wherein: The slider is sleeved on the outside of the core rod. A limiting groove is formed on the side wall of the core rod along the axial direction. A limiting block is fixed inside the slider. The limiting block and the limiting groove are slidably connected.

6. The handle assembly facilitating rotational operation of claim 5, wherein: The slider is composed of two interlocking semicircular structures, and each semicircular structure is fixedly connected with a docking block. The two docking blocks are arranged correspondingly, and the limiting block is composed of two docking blocks.

7. The handle assembly facilitating rotational operation of claim 6, wherein: Between the two semicircular structures, one of the semicircular structures is provided with a buckle and the other semicircular structure is provided with a slot, and the buckle and the slot are engaged and connected to each other.

8. The handle assembly facilitating rotational operation of claim 1, wherein: The front end of the core rod is provided with a connecting tube, and the side wall of the connecting tube is provided with a notch along the axial direction for installing the spring tube. The core rod is sleeved on the outside of the connecting tube, and the inner wall of the front end of the core rod sleeve is provided with an anti-rotation block, which can be inserted into the notch.

9. The handle assembly facilitating rotational operation of claim 8, wherein: The rear end face of the core rod sleeve is provided with an alignment groove, and the front end face of the core rod is provided with a groove. The alignment groove corresponds to the anti-rotation block, and the groove is aligned with the notch.

10. A handheld medical instrument, characterized by: The device includes a handle assembly for easy rotational operation as described in any one of claims 1-9, and further includes a cable and an actuator, wherein the rear end of the cable is connected to the handle assembly and the front end of the cable is connected to the actuator.

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