Combined elbow osteotome

By introducing a rotary clamping mechanism and a combination mechanism into the combined curved bone cutter, the problems of easy damage to the support rod and difficulty in replacing the bone cutter head are solved, realizing stable clamping of the support rod and quick replacement of the bone cutter head, thus improving the applicability and ease of use of the device.

CN224330988UActive Publication Date: 2026-06-09AFFILIATED HOSPITAL OF CHENGDE MEDICAL COLLEGE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
AFFILIATED HOSPITAL OF CHENGDE MEDICAL COLLEGE
Filing Date
2024-12-12
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The existing modular curved bone cutter lacks a rotating clamping mechanism, which makes the support rod easy to damage and inconvenient to quickly replace the bone cutter head, thus limiting its application range.

Method used

A combined curved bone cutter, comprising a housing, a displacement control mechanism, and a combination mechanism, was designed. The support rod is clamped and fixed by rotating the handle, and the bone cutter head can be quickly replaced. Stable clamping is achieved by using the clamping plate and limiting groove inside the housing.

Benefits of technology

This device achieves stable clamping and fixation of the support rod and quick replacement of the bone cutter head, improving its applicability and ease of use, and reducing the risk of damage to the support rod.

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    Figure CN224330988U_ABST
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Abstract

The utility model relates to the technical field of elbow bone cutter, concretely is a combined elbow bone cutter, including the casing, the casing inside swing is provided with the shift control mechanism, the shift control mechanism includes fixed disc, threaded column, movable block, thread groove, clamping plate, fixed block and movable slot. The utility model user can rotate the rotary handle, makes the fixed disc rotate under the traction of movable column, because clamping plate is active and is inserted in the inside of fixed block, so movable block can freely move on threaded column, leads clamping plate to contract inwards, when clamping plate one end is in abutment in the limit groove bottom, can carry out the clamping fixed of support rod, if needing to replace the bone cutter head, the user fixes the fixed part with one hand, and the other hand rotates the bone cutter head and makes it separate from the fixed groove, can complete the combination installation and replacement of bone cutter, the device has the clamping mechanism of rotary type, and the user only needs to complete the clamping fixed of support rod through simple rotation, saves time and labour.
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Description

Technical Field

[0001] This utility model relates to the field of curved bone scalpel technology, specifically a combined curved bone scalpel. Background Technology

[0002] During orthopedic surgery to reposition a patient's vertebrae, doctors need to use a bone cutter to realign the patient's bones.

[0003] As disclosed in Publication No. CN 219940720 U, a combined curved bone scalpel includes a blade body connected to a handle; one end of the blade body is provided with a first cutting edge, which is bent into an arc shape, and the other end of the blade body is provided with a second cutting edge; however, when the first cutting edge extends towards the second cutting edge, the device does not have a rotating clamping mechanism, and the user cannot clamp and fix the support rod by simple rotation. Under long-term use, the support rod is bound to be damaged. This structure is inconvenient for users to quickly replace the blade, and there is no combined installation mechanism, so the device cannot be used to replace the bone scalpel head as needed, and the scope of application is not improved. Utility Model Content

[0004] The purpose of this invention is to provide a combined curved bone scalpel to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A combined curved bone scalpel includes a housing. A displacement control mechanism is movably disposed within the housing. The displacement control mechanism includes a fixed plate, a threaded column, a movable block, a threaded groove, a clamping plate, a fixed block, and a movable groove. A fixed plate is movably disposed on one side of the housing. A threaded column is fixedly disposed at the center of the side portion of the fixed plate. A movable block is movably disposed around the threaded column. A threaded groove is formed at the center of the movable block, and the threaded groove is movably connected to the threaded column. Several clamping plates are fixedly disposed on the side of the movable block away from the fixed plate. A fixed block is fixedly disposed on the side of the housing away from the fixed plate. Several movable grooves are formed inside the fixed block, and the movable grooves are movably connected to the clamping plates.

[0007] A support rod is movably disposed inside the casing near the fixing block. A combination mechanism is fixedly disposed on the side of the support rod away from the casing. The combination mechanism includes a fixing member, a fixing groove, and a bone cutter head. The fixing member is fixedly disposed on the side of the support rod away from the casing. A fixing groove is formed inside the fixing member. A bone cutter head is movably disposed inside the fixing groove.

[0008] Preferably, the bone scalpel head has a groove on the side away from the fixing member, and a leather sleeve is fixedly installed around the outer circumference of the casing. The groove facilitates the user's surgical operation, and the leather sleeve facilitates the user's grip through friction with the palm.

[0009] Preferably, the support rod has several limiting grooves on the side near the fixed block. The limiting grooves are movably connected to one end of the clamping plate. The setting of the limiting grooves and the movable connection of the clamping plate restricts the movement position of the clamping plate.

[0010] Preferably, an anti-slip pad is fixedly provided on the inner wall of the clamping plate. The anti-slip pad increases friction to enable the clamping plate to stably clamp the support rod.

[0011] Preferably, a movable column is fixedly provided on the other side of the fixed plate. The movable column is movably connected to the inside of the casing. A rotating handle is fixedly provided on the side of the movable column away from the fixed plate. By rotating the rotating handle, the movable column can move in the same direction, thereby stably clamping the support rod. This rotation method is more time-saving and labor-saving.

[0012] Preferably, a lighting lamp is movably installed on one side of the outer shell, and a threaded block is fixedly installed at the bottom of the lighting lamp. The threaded block is movably connected to the inside of the shell. The lighting lamp provides a relatively bright working environment for surgery, and the detachable connection method provides users with multiple options.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This modular curved bone scalpel features a support rod inserted into one side of the housing, resting against a fixed block. The user can then rotate the handle, causing the fixed plate to rotate under the traction of the movable column. Because the clamping plate is inserted into the fixed block, the movable block can move freely on the threaded column, leading the clamping plate inward. When one end of the clamping plate abuts the bottom of the limiting groove, the support rod is clamped and fixed. Similarly, the user can loosen and remove the support rod by rotating the handle in the opposite direction. To replace the bone scalpel head, the user holds the fixing component with one hand and rotates the bone scalpel head with the other to disengage it from the fixing groove, thus completing the assembly and replacement of the bone scalpel. This modular curved bone scalpel device features a rotary clamping mechanism, allowing the user to clamp and fix the support rod with a simple rotation. Furthermore, the support rod is prone to damage over long-term use; this design facilitates quick replacement, saving time and effort. Its modular installation mechanism allows for the replacement of bone scalpel heads as needed, significantly expanding the device's applicability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal perspective structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the support rod connection structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the lighting structure installation of this utility model;

[0019] Figure 5 This is a schematic diagram of the overall rotating clamping structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the installation of the fixed disk structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the installation of the movable clamping structure of this utility model.

[0022] In the diagram: 1. Shell; 2. Fixed plate; 3. Threaded column; 4. Movable block; 5. Threaded groove; 6. Clamping plate; 9. Fixed block; 10. Movable groove; 11. Support rod; 12. Fixing component; 13. Fixed groove; 14. Bone blade head; 15. Groove; 16. Limiting groove; 17. Anti-slip pad; 18. Movable column; 19. Rotating handle; 20. Lighting lamp; 21. Threaded block; 22. Leather sleeve. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-7 As shown, this utility model provides a technical solution:

[0025] A combined curved bone scalpel includes a housing 1. A displacement control mechanism is movably disposed inside the housing 1. The displacement control mechanism includes a fixed plate 2, a threaded column 3, a movable block 4, a threaded groove 5, a clamping plate 6, a fixed block 9, and a movable groove 10. The fixed plate 2 is movably disposed on one side inside the housing 1. The threaded column 3 is fixedly disposed at the center of the side of the fixed plate 2. The movable block 4 is movably disposed around the threaded column 3. The movable block 4 has a threaded groove 5 in its center. The threaded groove 5 is movably connected to the threaded column 3. Several clamping plates 6 are fixedly disposed on the side of the movable block 4 away from the fixed plate 2. The fixed block 9 is fixedly disposed on the side of the housing 1 away from the fixed plate 2. Several movable grooves 10 are opened inside the fixed block 9. The movable grooves 10 are movably connected to the clamping plates 6.

[0026] Inside the casing 1, a support rod 11 is movably arranged on the side near the fixing block 9. On the side of the support rod 11 away from the casing 1, a combination mechanism is fixedly arranged. The combination mechanism includes a fixing member 12, a fixing groove 13, and a bone cutter head 14. The fixing member 12 is fixedly arranged on the side of the support rod 11 away from the casing 1. The fixing member 12 has a fixing groove 13 inside. The bone cutter head 14 is movably arranged inside the fixing groove 13.

[0027] In this embodiment, preferably, the bone scalpel head 14 has a groove 15 on the side away from the fixing member 12, and a leather sleeve 22 is fixedly provided around the outer circumference of the shell 1. The groove is designed to facilitate the user's surgical operation, and the leather sleeve is designed to facilitate the user's grip through friction with the palm.

[0028] In this embodiment, preferably, the support rod 11 has a plurality of limiting grooves 16 on the side near the fixing block 9. The limiting grooves 16 are movably connected to one end of the clamping plate 6. The setting of the limiting grooves and the movable connection of the clamping plate restricts the movement position of the clamping plate.

[0029] In this embodiment, preferably, an anti-slip pad 17 is fixedly provided on the inner wall of the clamping plate 6. The anti-slip pad increases the friction to enable the clamping plate to stably clamp the support rod.

[0030] In this embodiment, preferably, a movable column 18 is fixedly provided on the other side of the fixed plate 2. The movable column 18 is movably connected to the inside of the casing 1. A rotating handle 19 is fixedly provided on the side of the movable column 18 away from the fixed plate 2. By rotating the rotating handle, the movable column can move in the same direction, thereby stably clamping the support rod. Its rotation method is more time-saving and labor-saving.

[0031] In this embodiment, preferably, a lighting lamp 20 is movably provided on one side of the outer shell 1, and a threaded block 21 is fixedly provided at the bottom of the lighting lamp 20. The threaded block 21 is movably connected to the inside of the shell 1. The lighting lamp provides a relatively bright working environment for surgery, and the detachable connection method provides users with multiple options.

[0032] In this embodiment of the combined curved bone scalpel, the support rod 11 is inserted into one side of the housing 1 and rests against the fixing block 9. The user can then rotate the handle 19, causing the fixing plate 2 to rotate under the traction of the movable column 18. Because the clamping plate 6 is movably inserted inside the fixing block 9, the movable block 4 can move freely on the threaded column 3, causing the clamping plate 6 to retract inwards. When one end of the clamping plate 6 abuts against the bottom of the limiting groove 16, the support rod 11 can be clamped and fixed. Similarly, the user can loosen and remove the support rod 11 by rotating the handle 19 in the opposite direction. 1. To replace the bone scalpel head 14, the user holds the fixing member 12 with one hand and rotates the bone scalpel head 14 with the other hand to disengage it from the fixing groove 13, thus completing the assembly and replacement of the bone scalpel. The device has a rotating clamping mechanism, which allows the user to clamp and fix the support rod 11 with a simple rotation. In addition, the support rod 11 is bound to be damaged after long-term use. This structure makes it convenient for the user to replace it quickly, saving time and effort. Its modular installation mechanism allows the device to replace the bone scalpel head 14 as needed, greatly improving the applicability of the device.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A combined curved-head bone scalpel, characterized in that: The device includes a housing (1), and a displacement control mechanism is movably arranged inside the housing (1). The displacement control mechanism includes a fixed plate (2), a threaded column (3), a movable block (4), a threaded groove (5), a clamping plate (6), a fixed block (9), and a movable groove (10). A fixed plate (2) is movably arranged on one side inside the housing (1). A threaded column (3) is fixedly arranged at the center of the side of the fixed plate (2). A movable block (4) is movably arranged around the threaded column (3). A threaded groove (5) is opened at the center inside the movable block (4). The threaded groove (5) is movably connected to the threaded column (3). Several clamping plates (6) are fixedly arranged on the side of the movable block (4) away from the fixed plate (2). A fixed block (9) is fixedly arranged on the side of the housing (1) away from the fixed plate (2). Several movable grooves (10) are opened inside the fixed block (9). The movable grooves (10) are movably connected to the clamping plates (6). Inside the casing (1), a support rod (11) is movably arranged on the side near the fixing block (9). On the side of the support rod (11) away from the casing (1), a combination mechanism is fixedly arranged. The combination mechanism includes a fixing member (12), a fixing groove (13), and a bone cutter head (14). On the side of the support rod (11) away from the casing (1), a fixing member (12) is fixedly arranged. The fixing member (12) has a fixing groove (13) inside. The bone cutter head (14) is movably arranged inside the fixing groove (13).

2. The combined curved-head bone scalpel according to claim 1, characterized in that: The bone cutter head (14) has a groove (15) on the side away from the fixing member (12), and a leather sleeve (22) is fixedly installed around the outside of the casing (1).

3. The combined curved-head bone scalpel according to claim 1, characterized in that: The support rod (11) has several limiting grooves (16) on the side near the fixed block (9), and the limiting grooves (16) are movably connected to one end of the clamping plate (6).

4. The combined curved-head bone scalpel according to claim 1, characterized in that: The inner wall of the clamping plate (6) is fixedly provided with an anti-slip pad (17).

5. A combined curved-head bone scalpel according to claim 1, characterized in that: A movable column (18) is fixedly installed on the other side of the fixed plate (2). The movable column (18) is movably connected to the inside of the casing (1). A rotating handle (19) is fixedly installed on the side of the movable column (18) away from the fixed plate (2).

6. A combined curved-head bone scalpel according to claim 1, characterized in that: A lighting lamp (20) is movably provided on one side of the outer shell (1), and a threaded block (21) is fixedly provided at the bottom of the lighting lamp (20). The threaded block (21) is movably connected to the inside of the shell (1).

Citation Information

Patent Citations

  • Rotary double-skull osteotome

    CN219940720U