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CN-122005041-A - Cervical vertebra titanium cage fixing device

CN122005041ACN 122005041 ACN122005041 ACN 122005041ACN-122005041-A

Abstract

The invention discloses a cervical vertebra titanium cage fixing device, which belongs to the technical field of medical instruments and comprises a titanium plate, wherein the front side of the titanium plate is embedded and installed with a titanium cage body through two mounting plates, a positioning assembly is arranged in a swivel base, and positioning and fixing of a positioning screw after swivel positioning can be realized through the positioning assembly. This titanium cage fixing device of cervical vertebra is laminated mutually through titanium cage body and patient's cervical vertebra with the titanium board and is connected, then passes through the mounting hole swivelling joint of setscrew inside seting up of swivel mount and in cone department, can accomplish to fix a position the titanium cage body, after the setscrew location is fixed, two extrusion springs will be through its elasticity can be with two locating pieces automatic spring into the constant head tank of setscrew both sides seting up in to realize locating fixed in the position of setscrew after the swivel positioning, avoid the setscrew to appear not hard up abscission because rocking in the later stage cooperation patient use.

Inventors

  • LI HAOTIAN
  • CHEN WEI
  • ZHANG DI
  • ZHANG YASONG

Assignees

  • 河北医科大学第三医院

Dates

Publication Date
20260512
Application Date
20260203

Claims (10)

  1. 1. The cervical vertebra titanium cage fixing device comprises a titanium plate (1) and positioning holes (4) formed in four corners of the titanium plate (1), wherein a titanium cage body (3) is embedded and installed on the front side of the titanium plate (1) through two mounting plates (2), and the titanium cage body (3) is in a mesh shape; the method is characterized in that: two rotary seats (5) are rotatably arranged in the titanium plate (1), positioning screws (6) are connected in the two rotary seats (5) in a matched mode through mounting holes (18) formed in the two rotary seats, and the rear ends of the two positioning screws (6) penetrate through and extend to the rear side of the titanium plate (1); the positioning assembly is arranged in the rotary seat (5), positioning and fixing of the positioning screw (6) after rotary positioning can be realized through the positioning assembly, and the phenomenon that the positioning screw (6) loosens and falls off in the later use process is avoided; The inside of titanium board (1) is provided with the protection subassembly, can realize carrying out buffering protection to titanium cage body (3) through the protection subassembly that sets up, has reduced the stress shielding of titanium cage body (3).
  2. 2. The cervical vertebra titanium cage fixing device according to claim 1, wherein the titanium plate (1) and the titanium cage body (3) are integrally designed, and the titanium plate (1) is in an arc shape.
  3. 3. The cervical titanium cage fixing device according to claim 1, wherein the positioning assembly comprises two positioning blocks (13), wherein the two positioning blocks (13) are slidably mounted in the swivel base (5), two positioning grooves (14) are formed in the outer side face of the positioning screw (6), and the positioning grooves (14) are in clamping connection with the positioning blocks (13).
  4. 4. The cervical titanium cage fixing device according to claim 1, wherein the inner wall of the swivel base (5) is fixedly connected with one ends of two extrusion springs (15), and the other ends of the two extrusion springs (15) are fixedly connected with the positioning block (13).
  5. 5. The cervical titanium cage fixing device according to claim 4, wherein the outer side surfaces of the two positioning blocks (13) are fixedly connected with one ends of polyether-ether-ketone fiber pull ropes (16), the two polyether-ether-ketone fiber pull ropes (16) are identical in structure, and the other ends of the two polyether-ether-ketone fiber pull ropes (16) are fixedly connected with the two transmission rods (12) through guide wheels arranged inside the rotary seat (5).
  6. 6. The cervical titanium cage fixing device according to claim 1, wherein two shifting blocks (11) are slidably arranged above the swivel base (5), and transmission rods (12) are fixedly arranged at the outer ends of the two shifting blocks (11), wherein the two transmission rods (12) are slidably arranged inside the swivel base (5) through a reset spring (17).
  7. 7. The cervical titanium cage fixing device according to claim 1, wherein one end of two connecting rods (8) are rotatably mounted on the rear side of the mounting plate (2), the two connecting rods (8) are inclined, and the other ends of the two connecting rods (8) are rotatably connected with a sliding piece (9).
  8. 8. The cervical titanium cage fixing device according to claim 7, wherein two of the sliding members (9) are slidably mounted inside the top plate (7), and the two sliding members (9) are symmetrically disposed with respect to a lateral center line of the top plate (7), and the top plate (7) is slidably mounted inside the titanium plate (1).
  9. 9. The cervical titanium cage fixing device according to claim 8, wherein the inner wall of the top plate (7) is fixedly connected with one ends of two power accumulating springs (10), the two power accumulating springs (10) have the same structure, and the other ends of the two power accumulating springs (10) are fixedly connected with a sliding piece (9).
  10. 10. The cervical titanium cage fixing device according to claim 9, wherein the power accumulating spring (10), the extrusion spring (15) and the return spring (17) are identical in structure, and the power accumulating spring (10), the extrusion spring (15) and the return spring (17) are made of medical stainless steel materials.

Description

Cervical vertebra titanium cage fixing device Technical Field The invention relates to the technical field of medical instruments, in particular to a cervical titanium cage fixing device. Background The cervical vertebra titanium cage fixing device is a bone grafting fusion auxiliary device in the cervical vertebra anterior approach decompression fusion operation, takes medical titanium alloy as a main material, is in a hollow cage-shaped structure, is implanted into a decompression bone defect area between cervical vertebra vertebral bodies, has three core functions of bone defect filling, interbody supporting and bone grafting fusion carrier, finally realizes bone fusion between cervical vertebra bodies, recovers physiological curvature and stability of cervical vertebra, is a common implant for clinically treating cervical vertebra lesions such as cervical disc herniation, vertebral bone hyperosteogeny, cervical vertebra fracture dislocation and the like, for example, in a titanium cage dislocation prevention titanium plate for the cervical vertebra anterior approach operation in the prior art 1 (China patent with application number CN202120466896.8 and 2021-03-04), is beneficial to contact fixation of a plate body to the front edge of the cage body through the arrangement of a plate body and a supporting table in a convex shape structure, and further plays a role in preventing cage body displacement; the plate body and the supporting table with various specifications are arranged to be beneficial to being suitable for fixing and limiting different patients and different operation positions, thereby reducing the occurrence risk of postoperative complications of the patients, the plate body and the supporting table are arranged in radian, being beneficial to increasing the structural strength of the device and preventing the device from deformation, for example, in the internal fixing device for anterior cervical fusion in the prior art 1 (the Chinese patent with the application number of CN20166205441. X and the application date of 2016-03-21), connecting screw holes are respectively arranged on the anterior cervical steel plate and the titanium mesh, the anterior cervical steel plate and the titanium mesh can be stably connected in the secondary total cutting of the anterior cervical vertebral body, particularly in the secondary total cutting of the multi-segment cervical vertebral body, the operation time is not increased, the displacement of the titanium mesh is obviously reduced, the complication of anterior cervical surgery is reduced, the anterior cervical bone fusion rate is improved, greatly improves the curative effect of the operation and is worthy of clinical popularization. In the prior art, although the fixing effect on the cervical titanium cage can be improved, the fusion rate of cervical vertebrae can be improved, the cervical titanium cage is basically and directly positioned and fixed through screws in the actual installation and positioning process of the cervical titanium cage, but the phenomenon that screw bolts are loosened and fall off due to shaking occurs in the later use process of a patient, and the positioning stability of the cervical titanium cage is reduced, so that the cervical titanium cage fixing device is provided, and the problems can be well solved. Disclosure of Invention The invention aims to provide a cervical titanium cage fixing device, which is used for solving the problems that in the actual installation and positioning process of the cervical titanium cage in the market, which is proposed by the background technology, the positioning and fixing are basically carried out directly through screws, but in the later use process of a patient, the screw bolts are loosened and fall off due to shaking, and the positioning stability of the cervical titanium cage is reduced. The cervical vertebra titanium cage fixing device comprises a titanium plate and positioning holes formed in four corners of the titanium plate, wherein the titanium cage body is embedded and installed on the front side of the titanium plate through two mounting plates, the titanium cage body is meshed, two rotary seats are rotatably installed in the titanium plate, positioning screws are connected to the two rotary seats through the formed mounting holes in a matched mode, the rear ends of the two positioning screws penetrate through the rear sides of the titanium plate, positioning components are arranged in the rotary seats, positioning and fixing of the positioning screws after rotary positioning can be achieved through the arranged positioning components, loosening and falling of the positioning screws in the later use process are avoided, a protection component is arranged in the titanium plate, buffering protection of the titanium cage body is achieved through the arranged protection component, and stress shielding of the titanium cage body is reduced. Preferably, the titanium plate and the ti