Bone wax applicator for hemostasis of bone wounds

Abstract

This application belongs to the field of medical devices, specifically relating to a bone wax applicator for hemostasis of bone wounds, including a handle, a cannula, an inner push rod, and a control actuator. The handle has a hollow structure; the cannula is connected to the end of the handle; the inner push rod passes through the handle and the cannula; the control actuator includes a finger operating part and a linkage connected to the finger operating part. The finger operating part is slidably embedded in the outer wall of the handle, and the linkage is connected to the end of the inner push rod. In use, the handle is held with one hand while the thumb is placed on the finger operating part. The applicator end of the cannula is moved to the designated position, and then the finger operating part is moved, causing the inner push rod to move within the cannula and squeeze out the bone wax, thus allowing the bone wax to be applied to the bone wound surface. Because the linkage is connected to the end of the inner push rod outside the handle, the control actuator does not need to penetrate the handle, thereby preventing bone wax from flowing along the inner push rod into the handle cavity and overflowing, affecting normal operation.

Description

Technical Field

[0001] This application belongs to the field of medical devices, specifically relating to a bone wax applicator for hemostasis of bone wounds. Background Technology

[0002] A bone wax applicator is a surgical instrument primarily used to apply bone wax (a medical material used to seal bone wounds and control bleeding) during orthopedic, neurosurgical, or thoracic surgeries.

[0003] Existing bone wax applicators employ a hollow handle, a sleeve, an inner push rod, and a control actuator in a linked design. The handle connects to the end of the sleeve and is internally interconnected. The control actuator pushes the inner push rod to expel bone wax from the top of the sleeve, completing the application. This is suitable for the confined spaces under endoscopy. However, the control actuator needs to penetrate the side wall of the handle and connect to the inner push rod. Furthermore, a through-groove needs to be created on the handle to allow for the movement of the control actuator. Since the bone wax needs to be heated and softened before filling the sleeve, the softened bone wax can easily overflow from the groove during refilling, as it may enter the inner cavity of the handle along the inner push rod (a gap is usually present between the inner push rod and the inner cavity of the handle for smooth operation). This can affect normal operation. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide a bone wax applicator for hemostasis of bone wounds, which is less likely to spill bone wax and improves the reliability of the application operation.

[0005] This application provides a bone wax applicator for hemostasis of bone wounds, comprising: The handle has a hollow structure; A sleeve, connected to the end of the handle; An inner push rod passes through the handle and the sleeve; The control actuator includes a finger operating part and a linkage connected to the finger operating part. The finger operating part is slidably embedded in the outer wall of the handle, and the linkage is connected to the end of the inner push rod.

[0006] Optionally, the outer wall of the handle has a guide groove, and a slider for sliding cooperation with the guide groove is provided on one side of the finger operating part. The end of the linkage away from the finger operating part is bent toward the inner push rod to form a curved part. When the finger operating part moves along the guide groove, the linkage pushes the inner push rod.

[0007] Optionally, a docking ring is provided on one side of the curved portion of the linkage for movably inserting the end of the inner push rod.

[0008] Optionally, the finger operating part has a thumb operating hole.

[0009] Optionally, a limit ring is fixedly provided on the exposed portion of the inner push rod at one end of the handle.

[0010] Optionally, the side of the handle opposite to the finger operating part is provided with an anti-slip structure.

[0011] Optionally, the anti-slip structure includes a plurality of arc-shaped protrusions distributed along the length of the handle.

[0012] Optionally, the sleeve is screwed to the handle.

[0013] Optionally, the end of the sleeve away from the handle is smoothly bent to form an application portion, and the application portion has a wax outlet on the side opposite to the bending direction.

[0014] Optionally, the end of the coating portion has a flat, closed structure.

[0015] The beneficial effect of this application is that the bone wax applicator for hemostasis of bone wounds provided by this application fills the cannula with bone wax. With the inner push rod and control actuator in their initial positions, during use, the handle is held with one hand while the thumb is placed on the finger operating part. The applicator end of the cannula is moved to the designated position, and then the finger operating part is moved to drive the inner push rod within the cannula, squeezing out the bone wax and thus applying it to the bone wound surface. Because the linkage is connected to the end of the inner push rod outside the handle, the control actuator does not need to penetrate the handle, thereby preventing bone wax from flowing along the inner push rod into the handle cavity and overflowing, thus affecting normal operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the bone wax applicator provided in the embodiments of this application; Figure 2 Exploded view of the bone wax applicator provided in the embodiments of this application Figure 1 ; Figure 3 Exploded view of the bone wax applicator provided in the embodiments of this application Figure 2 .

[0017] In the diagram: 100, handle; 110, guide groove; 120, anti-slip structure; 200, sleeve; 210, application part; 220, wax outlet; 300, inner push rod; 310, limit ring; 400, control pusher; 410, finger operation part; 411, slider; 412, thumb operation hole; 420, linkage; 421, bending part; 422, docking ring. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0019] like Figure 1-3 As shown, this application provides a bone wax applicator for hemostasis of bone wounds, comprising: a handle 100, a sleeve 200, an inner push rod 300, and a control pusher 400; wherein, the handle 100 is a hollow structure; the sleeve 200 is connected to the end of the handle 100; the inner push rod 300 passes through the handle 100 and the sleeve 200; the control pusher 400 includes a finger operating part 410 and a linkage 420 connected to the finger operating part 410, the finger operating part 410 being slidably embedded in the outer wall of the handle 100, and the linkage 420 being connected to the end of the inner push rod 300.

[0020] Compared with the prior art, the bone wax applicator for hemostasis of bone wounds provided in this application fills the sleeve 200 with bone wax. With the inner push rod 300 and control pusher 400 in their initial positions, during use, the handle 100 is held with one hand while the thumb is placed on the finger operating part 410. The applicator end of the sleeve 200 is moved to the designated position, and then the finger operating part 410 is moved, causing the inner push rod 300 to move within the sleeve 200 and extruding the bone wax, thus allowing the bone wax to be applied to the bone wound surface. Because the linkage 420 is connected to the end of the inner push rod 300 outside the handle 100, the control pusher 400 does not need to penetrate the handle 100, thereby preventing bone wax from entering the inner cavity of the handle 100 along the inner push rod 300 and overflowing, affecting normal operation.

[0021] In one possible implementation, the outer wall of the handle 100 has a guide groove 110, and a slider 411 for sliding engagement with the guide groove 110 is provided on one side of the finger operating part 410. The end of the linkage 420 away from the finger operating part 410 is bent inward towards the push rod 300 to form a curved portion 421. When the finger operating part 410 moves along the guide groove 110, the linkage 420 pushes the push rod 300. Specifically, there are two guide grooves 110, which are straight, and there are also two sliders 411. The sliders 411 are integrally formed with the finger operating part 410. After the linkage 420 is disengaged from the end of the push rod 300, the sliders 411 can be disengaged from the guide groove 110, which makes it easy to remove and assemble the finger operating part 410, and also facilitates the filling of bone wax. By bending the end of the linkage 420 to cover the end of the inner push rod 300, the inner push rod 300 can be pushed from the outside with just the thumb while achieving one-handed operation. This solves the problem of bone wax overflowing into the inner cavity of the handle 100 and affecting normal operation, which would require designing a through groove on the handle 100.

[0022] In one possible implementation, simply bending the end of the linkage 420 to push the inner push rod 300 still presents a problem: misalignment between the inner push rod 300 and the bent portion 421 prevents proper pushing. Therefore, a mating ring 422 is provided on one side of the bent portion 421 of the linkage 420 to movably insert the end of the inner push rod 300, thereby restricting the end of the inner push rod 300 and preventing misalignment. Furthermore, compared to fixing the end of the inner push rod 300 to the bent portion 421, this improves the ease of processing and assembly.

[0023] In one possible implementation, the finger operating part 410 has a thumb operating hole 412. During use, the user's thumb can be inserted into the thumb operating hole, preventing the thumb from slipping out and improving operational stability.

[0024] In another possible implementation, the finger operating part 410 may also have a U-shaped groove for placing the operator's thumb. During use, the user's thumb can be pressed into the U-shaped groove to prevent the thumb from slipping out and to improve the stability of the operation.

[0025] In one possible implementation, a limiting ring 310 is fixedly provided on the exposed portion of the inner push rod 300 at one end of the handle 100. Specifically, the limiting ring 310 is integrally formed with the inner push rod 300 or is machined separately and then connected together. It is mainly used to limit the maximum advancing distance of the inner push rod 300. Secondly, it can also serve as an operating part to facilitate the handling of the inner push rod 300.

[0026] In one possible implementation, the handle 100 has an anti-slip structure 120 on the side opposite to the finger operating part 410. Specifically, the anti-slip structure 120 can increase the friction with the operator's hand, preventing the handle 100 from accidentally slipping during use, affecting the accuracy of the surgical operation, or even causing accidental injury.

[0027] In one possible implementation, the anti-slip structure 120 includes a plurality of arc-shaped protrusions distributed along the length of the handle 100. Specifically, the plurality of arc-shaped protrusions are integrally formed with the handle 100, and the shape of the arc-shaped protrusions is more in line with the shape of the hand when gripping, thus providing greater operating comfort.

[0028] In one possible implementation, the sleeve 200 is screwed to the handle 100. This is mainly to facilitate separate processing and connection, while allowing components other than the sleeve 200 to be designed as reusable. The sleeve 200 is designed as a disposable item for easy connection and replacement, and is pre-filled with bone wax.

[0029] In another possible current configuration, the sleeve 200 is fixedly connected to the handle 100 and cannot be disassembled, making the bone wax applicator a disposable item.

[0030] In one possible implementation, the end of the cannula 200 away from the handle 100 is smoothly curved to form an application section 210, and the side of the application section 210 opposite to the curvature has a wax outlet 220. Specifically, the application section 210 with a certain curvature can pass through narrow muscle channels or interosseous spaces to accurately reach deep bone wounds (such as complex anatomical sites such as the spine, skull, or iliac bone), avoiding visual obstruction or instrument collision caused by straight-line operation, and can expand the effective application area, which is beneficial to improving hemostasis.

[0031] In one possible implementation, the end of the application portion 210 has a flat, closed structure. Specifically, the flat end has a relatively large contact area with the bone surface, allowing for more even distribution of bone wax during application, effectively filling the tiny pores in the bone surface and achieving a more comprehensive hemostatic effect. At the same time, the closed structure, unlike the open structure, does not easily lead to local accumulation or uneven distribution of bone wax during application, further improving the uniformity of application.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0033] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A bone wax applicator for hemostasis of bone wounds, characterized in that, include: The handle (100) has a hollow structure; A sleeve (200) is attached to the end of the handle (100); An inner push rod (300) is inserted inside the handle (100) and the sleeve (200); The control pusher (400) includes a finger operation part (410) and a linkage part (420) connected to the finger operation part (410). The finger operation part (410) is slidably embedded in the outer wall of the handle (100), and the linkage part (420) is connected to the end of the inner push rod (300).

2. The bone wax applicator for hemostasis of bone wounds according to claim 1, characterized in that, The outer wall of the handle (100) has a guide groove (110), and a slider (411) for sliding cooperation with the guide groove (110) is provided on one side of the finger operation part (410). The end of the linkage (420) away from the finger operation part (410) bends toward the inner push rod (300) to form a curved part (421). When the finger operation part (410) moves along the guide groove (110), the linkage (420) pushes the inner push rod (300).

3. The bone wax applicator for hemostasis of bone wounds according to claim 2, characterized in that, A docking ring (422) is provided on one side of the bent portion (421) of the linkage (420) for movably inserting the end of the inner push rod (300).

4. The bone wax applicator for hemostasis of bone wounds according to claim 3, characterized in that, The finger operating part (410) has a thumb operating hole (412).

5. The bone wax applicator for hemostasis of bone wounds according to claim 1, characterized in that, The inner push rod (300) is fixedly provided with a limit ring (310) on the exposed part at one end of the handle (100).

6. The bone wax applicator for hemostasis of bone wounds according to any one of claims 1-5, characterized in that, The handle (100) is provided with an anti-slip structure (120) on the side opposite to the finger operation part (410).

7. The bone wax applicator for hemostasis of bone wounds according to claim 6, characterized in that, The anti-slip structure (120) includes a plurality of arc-shaped protrusions distributed along the length of the handle (100).

8. The bone wax applicator for hemostasis of bone wounds according to any one of claims 1-5, characterized in that, The sleeve (200) is screwed to the handle (100).

9. The bone wax applicator for hemostasis of bone wounds according to any one of claims 1-5, characterized in that, The end of the sleeve (200) away from the handle (100) is smoothly bent to form an application part (210), and the application part (210) has a wax outlet hole (220) on the side opposite to the bending direction.

10. The bone wax applicator for hemostasis of bone wounds according to claim 9, characterized in that, The end of the coating part (210) has a flat closed structure.

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