Bone drill

Abstract

The utility model discloses a bone drill, which relates to the technical field of medical instruments, and comprises an operation assembly, an operation shell, a worm and a driving shaft which are rotatably connected in the operation shell, a worm gear which is fixedly connected on the driving shaft and is meshed with the worm, a workpiece and a driving part which are arranged on the driving shaft, and a handheld assembly, a linkage assembly and a driving assembly. The anti-falling bone drill screw is reasonable in design structure, the push-pull block and the connecting plate in the anti-falling assembly are ingeniously matched, it is guaranteed that the bone drill screw cannot fall off accidentally in the installation process, the anti-falling bone drill screw is especially important for sternum internal fixation, and due to the fact that the internal space of the thoracic cavity is narrow, once the screw falls off, serious complications such as heart or great blood vessel injury can be caused. Therefore, the safety and the success rate of the operation are remarkably improved, the anti-falling device can be pushed backwards to be withdrawn during drilling, operation accidents are reduced, the operation safety is improved, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a bone drill. Background Technology

[0002] Internal sternal fixation is a surgical treatment for sternal fractures. It involves placing metal fixation devices such as plates, screws, or wires onto the fractured sternum to stabilize the fracture ends and promote healing. However, commercially available bone drills for drilling are generally not designed to prevent dislodgement, and the limited operating space within the chest cavity makes it difficult for surgeons to support and restrain the screws at the tip, potentially leading to the screws falling into the patient's chest cavity and causing accidental injury. Therefore, we have developed a bone drill to address these issues. Utility Model Content

[0003] 1) Technical problems to be solved

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a bone drill.

[0005] (ii) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bone drill, comprising:

[0007] The operating assembly includes an operating housing, within which a worm gear and a drive shaft are rotatably connected. A worm wheel is fixedly connected to the drive shaft and meshes with the worm gear. A workpiece is mounted on the drive shaft.

[0008] The driving component includes a handheld component, a linkage component, and a driving component. The handheld component is detachably mounted on the operating component. The driving component drives the worm gear to rotate through the handheld component and the linkage component to enable the workpiece to complete the rotation operation.

[0009] The anti-detachment component includes a mounting base with a mounting groove, which is mounted on the operating housing. The mounting base also has a sliding groove with a push-pull block slidably connected within it. A connecting plate is fixedly connected to the push-pull block, and the end of the connecting plate away from the mounting base is bent, with an anti-detachment groove at the bend.

[0010] Bone drill screw, wherein the threaded end of the bone drill screw matches the anti-loosening groove.

[0011] Furthermore, the workpiece is a drill bit or a screwdriver.

[0012] Furthermore, the handheld assembly includes a handle housing, one end of which is fixedly connected to a connecting screw tube, and a threaded sleeve is fixedly connected to the operating housing, with the connecting screw tube threaded into the threaded sleeve.

[0013] Furthermore, a coupling is installed inside the handle housing, and a drive shaft is rotatably connected inside the coupling. An opening is designed at the end of the handle housing away from the operating housing.

[0014] Furthermore, the linkage assembly includes an adapter, with a worm gear connector and a transmission rod connector respectively installed at both ends of the adapter. One end of the worm gear is inserted into the transmission rod connector, and one end of the worm gear connector is inserted into the transmission shaft.

[0015] Furthermore, the drive assembly includes a handle wheel, on which a linkage rod is fixedly connected. The linkage rod has a connector groove, and the end of the linkage rod away from the handle wheel passes through the opening and is sleeved on the drive shaft through the connector groove.

[0016] Furthermore, a limiting rod is fixedly connected inside the groove, and the connecting plate is located below the limiting rod.

[0017] (iii) Beneficial effects:

[0018] Compared with existing technologies, this bone drill has the following beneficial effects:

[0019] This invention, through the ingenious cooperation of the push-pull block and connecting plate in the anti-dislodgement component, ensures that the bone drill screw will not accidentally fall off during installation. This is especially important for internal sternal fixation surgery, because the space inside the thoracic cavity is narrow, and once the screw falls off, it may cause serious complications, such as damage to the heart or major blood vessels. Therefore, it significantly improves the safety and success rate of the surgery. Furthermore, the anti-dislodgement device can be pushed back to remove the screw during drilling, reducing surgical accidents, improving surgical safety, and increasing surgical efficiency. Attached Figure Description

[0020] Figure 1 This is an exploded view of the present invention;

[0021] Figure 2 This is the front view of the present invention;

[0022] Figure 3 This is a cross-sectional view of the present invention;

[0023] Figure 4 This is a schematic diagram of the anti-detachment component of this utility model;

[0024] Figure 5 This is a schematic diagram of the linkage component of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the drive component of this utility model.

[0026] In the diagram: 1. Operating component; 11. Operating housing; 12. Threaded sleeve; 13. Worm gear; 14. Drive shaft; 15. Worm wheel; 2. Handheld component; 21. Handle housing; 22. Connecting threaded tube; 23. Coupling; 24. Drive shaft; 3. Linkage component; 31. Adapter; 32. Worm gear connector; 33. Drive rod connector; 4. Anti-detachment component; 41. Mounting base; 42. Mounting groove; 43. Slide groove; 44. Push-pull block; 45. Connecting plate; 46. Limiting rod; 47. Anti-detachment groove; 5. Drive component; 51. Handle wheel; 52. Linkage rod; 53. Connector groove; 6. Bone drill screw. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1-6 As shown, this utility model provides a technical solution: a bone drill, including an operating component 1, a driving component, an anti-dislodgement component 4, and a bone drill screw 6.

[0029] The operating component 1 includes an operating housing 11. A worm gear 13 and a drive shaft 14 are rotatably connected inside the operating housing 11. A worm wheel 15 is fixedly connected to the drive shaft 14, and the worm wheel 15 meshes with the worm gear 13. The transmission method using the worm wheel 15 and the worm gear 13 has a certain degree of self-locking. A workpiece, such as a drill bit or a screwdriver, is installed on the drive shaft 14. The drill bit and the screwdriver need to be installed on the drive shaft 14 in a transmission-enabled manner, that is, the drive shaft 14 can synchronously drive the drill bit or the screwdriver to rotate when rotating. When installing the drill bit, drilling can be performed. When installing the screwdriver, the bone drill screw 6 can be rotated and installed.

[0030] The driving components include a handheld component 2, a linkage component 3, and a driving component 5. The handheld component 2 is detachably mounted on the operating component 1. The driving component 5 drives the worm gear 13 to rotate through the handheld component 2 and the linkage component 3, thereby enabling the workpiece to complete the rotation operation.

[0031] The handheld component 2 includes a handle housing 21, one end of which is fixedly connected to a connecting screw tube 22. A threaded sleeve 12 is fixedly connected to the operating housing 11, and the connecting screw tube 22 is threaded into the threaded sleeve 12. The handle housing 21 and the operating housing 11 are detachable, which facilitates the inspection and maintenance of the internal structure of the operating housing 11 and the handle housing 21. A coupling 23 is installed inside the handle housing 21, and a drive shaft 24 is rotatably connected inside the coupling 23. An opening is designed at the end of the handle housing 21 away from the operating housing 11.

[0032] The linkage assembly 3 includes an adapter 31, with a worm gear connector 32 and a transmission rod connector 33 installed at both ends of the adapter 31. One end of the worm 13 is inserted into the transmission rod connector 33, and one end of the worm gear connector 32 is inserted into the transmission shaft 24. The connection between the worm 13 and the transmission rod connector 33 and the connection between the transmission shaft 24 and the worm gear connector 32 are both keyway and key block connections. That is, when the transmission shaft 24 rotates, it can drive the worm gear connector 32 to rotate, and the adapter 31 and the transmission rod connector 33 synchronously drive the worm 13 to rotate, thus completing the mechanical transmission.

[0033] The drive assembly 5 includes a handle wheel 51, a linkage rod 52 is fixedly connected to the handle wheel 51, and a connector groove 53 is provided in the linkage rod 52. The end of the linkage rod 52 away from the handle wheel 51 passes through the opening and is sleeved on the drive shaft 24 through the connector groove 53. The handle wheel 51 can drive the drive shaft 24 to rotate through the linkage rod 52, thereby completing the drive rotation of the drive shaft 24.

[0034] The anti-detachment component 4 includes a mounting base 41, on which a mounting groove 42 is provided, and the mounting base 41 is mounted on the operating housing 11 through the mounting groove 42. A sliding groove 43 is provided on the mounting base 41, and a push-pull block 44 is slidably connected in the sliding groove 43. A connecting plate 45 is fixedly connected to the push-pull block 44. The end of the connecting plate 45 away from the mounting base 41 is bent, and an anti-detachment groove 47 is provided at the bent end. A limit rod 46 is fixedly connected in the sliding groove 43, and the connecting plate 45 is located below the limit rod 46.

[0035] When it is necessary to prevent the bone drill screw 6 from coming off, the push-pull block 44 can slide in the slide groove 43 and move the bent part of the connecting plate 45 to the drive shaft 14. This prevents the bone drill screw 6 from coming off when the anti-loosening groove 47 is installed. When drilling, the push-pull block 44 moves the connecting plate 45 away from the drive shaft 14, so as not to obstruct the drilling.

[0036] The threaded end of the bone drill screw 6 matches the anti-loosening groove 47.

[0037] It should be noted that in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," and "linked" should be interpreted broadly. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "linked" can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bone drill, characterized in that, include: The operating component (1) includes an operating housing (11), in which a worm (13) and a drive shaft (14) are rotatably connected. A worm wheel (15) is fixedly connected to the drive shaft (14), and the worm wheel (15) meshes with the worm (13). A workpiece is mounted on the drive shaft (14). The driving component includes a handheld assembly (2), a linkage assembly (3) and a driving assembly (5). The handheld assembly (2) is detachably mounted on the operating assembly (1). The driving assembly (5) drives the worm gear (13) to rotate through the handheld assembly (2) and the linkage assembly (3) to enable the workpiece to complete the rotation operation. The anti-detachment component (4) includes a mounting base (41), on which a mounting groove (42) is provided, and the mounting base (41) is mounted on the operating housing (11) through the mounting groove (42). A sliding groove (43) is provided on the mounting base (41), and a push-pull block (44) is slidably connected in the sliding groove (43). A connecting plate (45) is fixedly connected to the push-pull block (44), and the end of the connecting plate (45) away from the mounting base (41) is bent, and an anti-detachment groove (47) is provided at the bent part. Bone drill screw (6), the threaded end of which matches the anti-loosening groove (47).

2. The bone drill according to claim 1, characterized in that: The workpiece is a drill bit or a screwdriver.

3. A bone drill according to claim 1, characterized in that: The handheld component (2) includes a handle housing (21), one end of which is fixedly connected to a connecting screw tube (22), and a threaded sleeve (12) is fixedly connected to the operating housing (11), and the connecting screw tube (22) is threadedly connected to the threaded sleeve (12).

4. A bone drill according to claim 3, characterized in that: A coupling (23) is installed inside the handle housing (21), and a drive shaft (24) is rotatably connected inside the coupling (23). An opening is designed at the end of the handle housing (21) away from the operating housing (11).

5. A bone drill according to claim 4, characterized in that: The linkage assembly (3) includes an adapter (31), with a worm gear connector (32) and a transmission rod connector (33) installed at both ends of the adapter (31). One end of the worm (13) is inserted into the transmission rod connector (33), and one end of the worm gear connector (32) is inserted into the transmission shaft (24).

6. A bone drill according to claim 4, characterized in that: The drive assembly (5) includes a handle wheel (51), a linkage rod (52) is fixedly connected to the handle wheel (51), a joint groove (53) is provided in the linkage rod (52), and the end of the linkage rod (52) away from the handle wheel (51) passes through the opening and is sleeved on the drive shaft (24) through the joint groove (53).

7. A bone drill according to claim 1, characterized in that: A limiting rod (46) is fixedly connected inside the slide groove (43), and the connecting plate (45) is located below the limiting rod (46).

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