Titanium nail bone grafting auxiliary fixing device

Abstract

The utility model discloses titanium nail bone grafting auxiliary fixing device belongs to medical instrument field, including adjustable clamping arm, adjustable clamping arm's front end fixed mounting has universal connecting shaft, universal connecting shaft's front end fixed mounting has the positioning board, the left end in -rotation mounting of positioning board has the knob, the rear side fixed mounting of knob has the first bevel gear, the left end in -rotation mounting of positioning board has the transmission shaft, fixed mounting has a plurality of groups second bevel gear on transmission shaft, the both ends in -rotation mounting of positioning board all have two -way screw rod, the left end in -fixed mounting of two groups two -way screw rod all have third bevel gear, through above each device cooperation and use, can carry out the bone plate and titanium nail implantation to patient skeleton bone grafting place, make the doctor in the operation process can more easily control titanium nail bone grafting position and angle, thereby ensured the accuracy and stability of titanium nail bone grafting operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a titanium nail bone grafting auxiliary fixation device. Background Technology

[0002] In current medical surgeries, especially in bone repair or reconstruction surgeries, bone grafting is a crucial step. Traditional bone grafting methods typically use medical forceps to fix the bone plate and graft together, and then use titanium screws to secure them to the patient's bone. However, these methods are often complex and have poor fixation results, especially when precise control of the graft's position and angle is required. Traditional fixation methods often fail to meet clinical needs.

[0003] Therefore, this utility model provides a titanium nail bone graft auxiliary fixation device to solve the above problems. Summary of the Invention

[0004] This invention provides a titanium nail bone grafting auxiliary fixation device, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes an adjustable clamping arm, a universal joint fixedly mounted at the front end of the adjustable clamping arm, a positioning plate fixedly mounted at the front end of the universal joint, a knob rotatably mounted inside the left end of the positioning plate, a first bevel gear fixedly mounted on the rear side of the knob, a transmission shaft rotatably mounted inside the left end of the positioning plate, multiple sets of second bevel gears fixedly mounted on the transmission shaft, bidirectional screws rotatably mounted inside both the upper and lower ends of the positioning plate, a third bevel gear fixedly mounted inside the left end of each of the two sets of bidirectional screws, and clamping components for auxiliary positioning of the bone plate provided on the two sets of bidirectional screws.

[0006] As a preferred technical solution of this application, the clamping assembly includes multiple sets of sliding sleeves, which are threaded onto two sets of bidirectional screws. Support rods are rotatably mounted on opposite sides of the multiple sets of sliding sleeves. Two sets of clamping plates are mounted on the multiple sets of support rods, which are located inside the left end of the positioning plate. Multiple sets of grooves are formed on opposite sides of the two sets of support rods, and the end of the multiple sets of support rods connected to the two sets of clamping plates is located in the multiple sets of grooves.

[0007] As a preferred technical solution of this application, the upper and lower opposite sides of the two sets of clamps are both concave inward, and the upper and lower opposite sides of the two sets of clamps are both provided with frosted texture.

[0008] As a preferred technical solution of this application, the positioning plate is symmetrically equipped with slide rails on the left side, and a connecting plate is slidably installed on the two sets of slide rails. A positioning cylinder is fixedly installed at the center position of the left side of the connecting plate.

[0009] As a preferred technical solution of this application, an elastic buffer pad is provided on the right side surface of the positioning plate, and the elastic buffer pad is made of medical and environmentally friendly material.

[0010] As a preferred technical solution of this application, the threads on the surfaces of the two sets of bidirectional screws rotate in the same direction, and the multiple sets of support rods are all arranged in a figure-eight shape.

[0011] Beneficial effects

[0012] The bone plate is inserted into the positioning plate, and by turning the knob, the first bevel gear, the drive shaft, multiple sets of second bevel gears, two sets of bidirectional screws, and two sets of third bevel gears, the clamping assembly is driven to clamp and limit the bone plate in the positioning plate. The adjustable clamping arm is pulled to fit the positioning plate with the patient's bone, so that the bone plate and titanium screw can be implanted at the bone graft site. This allows the doctor to more easily control the position and angle of the titanium screw bone graft during the operation, thereby ensuring the accuracy and stability of the titanium screw bone graft operation. Attached Figure Description

[0013] Figure 1 A schematic diagram of a titanium screw bone graft auxiliary fixation device;

[0014] Figure 2 A rear view schematic diagram of the positioning plate 3 in the titanium screw bone graft auxiliary fixation device;

[0015] Figure 3 A rear view cross-sectional diagram of the positioning plate 3 in the titanium screw bone graft auxiliary fixation device;

[0016] Figure 4 A rear view of the connecting plate 15 and the positioning cylinder 16 in the titanium screw bone graft auxiliary fixation device;

[0017] Figure 5 for Figure 3 A magnified structural diagram at point A;

[0018] Figure 6 for Figure 3 A magnified structural diagram at point B.

[0019] In the picture:

[0020] 1. Adjustable clamping arm; 2. Universal coupling; 3. Positioning plate; 4. Knob; 5. First bevel gear; 6. Drive shaft; 7. Second bevel gear; 8. Bidirectional screw; 9. Third bevel gear; 10. Sliding sleeve; 11. Support rod; 12. Clamping plate; 13. Groove; 14. Slide rail; 15. Connecting plate; 16. Positioning cylinder. Detailed Implementation

[0021] 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.

[0022] This utility model provides a titanium nail bone graft auxiliary fixation device, such as Figure 1-6 As shown, the auxiliary fixing device includes an adjustable clamping arm 1, a universal joint 2 fixedly mounted at the front end of the adjustable clamping arm 1, a positioning plate 3 fixedly mounted at the front end of the universal joint 2, a knob 4 rotatably mounted inside the left end of the positioning plate 3, a first bevel gear 5 fixedly mounted on the rear side of the knob 4, a drive shaft 6 rotatably mounted inside the left end of the positioning plate 3, multiple sets of second bevel gears 7 fixedly mounted on the drive shaft 6, bidirectional screws 8 rotatably mounted inside both the upper and lower ends of the positioning plate 3, a third bevel gear 9 fixedly mounted inside the left end of each of the two sets of bidirectional screws 8, and clamping components for auxiliary positioning of the bone plate provided on the two sets of bidirectional screws 8.

[0023] The bone plate is inserted into the positioning plate 3. At this time, by turning the knob 4, the first bevel gear 5, the drive shaft 6, multiple sets of second bevel gears 7, two sets of bidirectional screws 8 and two sets of third bevel gears 9 are driven to rotate synchronously, thereby driving the clamping assembly to clamp and limit the bone plate in the positioning plate 3. At this time, the adjustable clamping arm 1 is pulled to drive the universal joint 2 and the positioning plate 3 to move, so that the positioning plate 3 fits with the patient's bone, and the bone plate and titanium screw can be implanted at the bone graft site of the patient.

[0024] The clamping assembly includes multiple sets of sliding sleeves 10, which are threaded onto two sets of bidirectional screws 8. Support rods 11 are rotatably mounted on opposite sides of the multiple sets of sliding sleeves 10. Two sets of clamping plates 12 are mounted on the multiple sets of support rods 11, which are located inside the left end of the positioning plate 3. Multiple sets of grooves 13 are formed on opposite sides of the two sets of support rods 11, and the end of the multiple sets of support rods 11 connected to the two sets of clamping plates 12 is located in the multiple sets of grooves 13.

[0025] When the two sets of bidirectional screws 8 are rotated, multiple sets of sliding sleeves 10 move on the two sets of bidirectional screws 8 through threads, thereby driving multiple sets of support rods 11 and two sets of clamping plates 12 to unfold, thereby clamping and limiting the bone plate in the positioning plate 3, making it convenient to attach the bone plate to the patient's bone and perform titanium nail implantation and fixation.

[0026] Both sets of clamping plates 12 have an inwardly concave shape on their opposite sides, and both surfaces of the opposite sides of the clamping plates 12 are provided with a frosted texture.

[0027] Because the edges of the bone plates are all curved, the edges of the bone plates can fit tightly against the concave side of the two sets of splints 12, which improves the stability of the clamping. At the same time, the frosted texture increases the friction between the splints 12 and the bone plates, preventing the bone plates from slipping during the operation.

[0028] The left side of the positioning plate 3 is symmetrically equipped with slide rails 14, and the two sets of slide rails 14 are slidably mounted with connecting plates 15. The center position of the left side of the connecting plate 15 is fixedly installed with a positioning cylinder 16.

[0029] The positioning cylinder 16 on the connecting plate 15 ensures the stability and accuracy of the titanium nail during the implantation process.

[0030] An elastic cushioning pad is provided on the right side surface of the positioning plate 3. The elastic cushioning pad is made of medical and environmentally friendly material.

[0031] The elastic cushioning pad can act as a buffer when the positioning plate 3 is in contact with the patient's bones, preventing secondary injury to the patient caused by hard contact between the positioning plate 3 and the patient's bones. At the same time, the use of medical-grade environmentally friendly materials ensures the safety of the device during use.

[0032] The threads on the surfaces of the two sets of bidirectional screws 8 rotate in the same direction, and the multiple sets of support rods 11 are all arranged in a figure-eight shape.

[0033] The arrangement of multiple support rods 11 in a figure-eight shape allows the two sets of clamping plates 12 to be more stable when unfolded, further improving the stability of clamping.

[0034] Working principle: During use, the doctor first places the bone plate into the positioning plate 3 according to the needs of the surgery. Then, by turning the knob 4, the knob 4 drives the first bevel gear 5, the transmission shaft 6, multiple sets of second bevel gears 7, two sets of bidirectional screws 8, and two sets of third bevel gears 9 to rotate synchronously. At this time, multiple sets of sliding sleeves 10 move on the two sets of bidirectional screws 8 through threads, thereby driving multiple sets of support rods 11 and two sets of clamping plates 12 to unfold. The two sets of clamping plates 12 unfold and approach to clamp and limit the bone plate in the positioning plate 3. Then, the adjustable clamping arm 1 is pulled to drive the universal joint 2 and the positioning plate 3 to move, so that the bone plate in the positioning plate 3 fits with the patient's bone. Titanium nails can then be used to fix the bone plate and bone graft at the bone graft site. During the implantation of titanium nails, the connecting plate 15 and the positioning cylinder 16 can slide on the two sets of slide rails 14 to align with the holes on the bone plate. The titanium nail is then inserted from the positioning cylinder 16 to fix the bone plate to the patient's bone, thus completing the stability of the titanium nail fixation.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A titanium screw bone graft auxiliary fixation device, comprising an adjustable clamping arm (1), characterized in that: The adjustable clamping arm (1) is fixedly mounted with a universal joint (2) at its front end. The universal joint (2) is fixedly mounted with a positioning plate (3) at its front end. A knob (4) is rotatably mounted inside the left end of the positioning plate (3). A first bevel gear (5) is fixedly mounted on the rear side of the knob (4). A drive shaft (6) is rotatably mounted inside the left end of the positioning plate (3). Multiple sets of second bevel gears (7) are fixedly mounted on the drive shaft (6). Bidirectional screws (8) are rotatably mounted inside both the upper and lower ends of the positioning plate (3). A third bevel gear (9) is fixedly mounted inside the left end of each of the two sets of bidirectional screws (8). Clamping components for auxiliary positioning of the bone plate are provided on the two sets of bidirectional screws (8).

2. The titanium screw bone graft auxiliary fixation device according to claim 1, characterized in that: The clamping assembly includes multiple sets of sliding sleeves (10), which are threaded onto two sets of bidirectional screws (8). Support rods (11) are rotatably mounted on opposite sides of the multiple sets of sliding sleeves (10). Two sets of clamping plates (12) are mounted on the multiple sets of support rods (11), which are located inside the left end of the positioning plate (3). Multiple sets of grooves (13) are opened on opposite sides of the two sets of support rods (11), and the end of the multiple sets of support rods (11) connected to the two sets of clamping plates (12) is located in the multiple sets of grooves (13).

3. The titanium screw bone graft auxiliary fixation device according to claim 2, characterized in that: Both sets of clamps (12) have an inwardly concave side on their upper and lower opposite sides, and both sets of clamps (12) have a frosted texture on their upper and lower opposite sides.

4. The titanium screw bone graft auxiliary fixation device according to claim 1, characterized in that: The positioning plate (3) is symmetrically equipped with slide rails (14) on its left side, and connecting plates (15) are slidably installed on the two sets of slide rails (14). A positioning cylinder (16) is fixedly installed at the center of the left side of the connecting plate (15).

5. The titanium screw bone graft auxiliary fixation device according to claim 1, characterized in that: The right side surface of the positioning plate (3) is provided with an elastic buffer pad, which is made of medical and environmentally friendly material.

6. The titanium screw bone graft auxiliary fixation device according to claim 2, characterized in that: The threads on the surfaces of the two sets of bidirectional screws (8) rotate in the same direction, and the multiple sets of support rods (11) are all arranged in a figure-eight shape.

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