CN-122005156-A - Titanium alloy bone grafting bed

Abstract

The invention discloses a titanium alloy bone grafting bed which comprises two symmetrical semi-vertebral plates, wherein the semi-vertebral plates comprise a main body and a connector, the main body is in a plate shape, a plurality of through holes which are arranged in a displaying mode are formed in the main body, the through holes are round holes with diameters of 2.5 mm-3 mm, clamping columns are arranged on the side edges of the main body, one end of the connector is provided with a first open slot, the first open slot can be clamped on the clamping columns from bottom to top, a first stud is arranged in the first open slot so as to be tightly pressed on the clamping columns, a second open slot is formed in the other end of the connector, a fixing hole is formed in the top of the second open slot, the second open slot can be placed on a nail rod of a pedicle nail rod system in lumbar spinal stenosis vertebral canal decompression surgery, and the second stud is arranged in the fixing hole so as to be tightly pressed on the nail rod.

Inventors

• WANG YU
• QI LONGTAO

Assignees

• 北京大学第一医院(北京大学第一临床医学院)

Dates

Publication Date

20260512

Application Date

20260123

Claims (9)

1. 1. A titanium alloy bone grafting bed, comprising two symmetrically disposed half-laminae, the half-laminae comprising: The main body is in a plate shape, a plurality of through holes which are arranged in a displaying way are formed in the main body, and clamping columns are arranged on the side edges of the main body; The device comprises a connector, wherein one end of the connector is provided with a first open slot, the first open slot can be clamped on a clamping column from bottom to top, a first stud is installed in the first open slot so as to be tightly pressed on the clamping column, the other end of the connector is provided with a second open slot, the top of the second open slot is provided with a fixing hole, the second open slot can be placed on a rod of a pedicle screw rod system in lumbar spinal stenosis vertebral canal decompression operation, and a second stud is installed in the fixing hole so as to be tightly pressed on the rod; wherein the through hole is a round hole with the diameter of 2.5 mm-3 mm.
2. 2. The titanium alloy bone grafting bed according to claim 1, characterized in that, Every four through holes are surrounded to form a polygonal hole.
3. 3. The titanium alloy bone grafting bed according to claim 1, characterized in that, In the length direction of the main body, screw holes are provided at both ends of the main body for mounting screws.
4. 4. The titanium alloy bone grafting bed according to claim 3, characterized in that, The screw is a cortical screw.
5. 5. The titanium alloy bone grafting bed according to claim 1, characterized in that, The longitudinal section of the first open slot is U-shaped, and the cross section of the first open slot is racetrack-shaped.
6. 6. The titanium alloy bone grafting bed according to claim 1, characterized in that, The upper surface of the main body is provided with a composite coating containing hydroxyapatite, and the composite coating also comprises calcium carbonate powder.
7. 7. The titanium alloy bone grafting bed according to claim 6, characterized in that, The powder of the composite coating is coated on the surface of the titanium alloy matrix of the main body by adopting laser cladding, and the titanium alloy matrix of the main body is subjected to electric polarization treatment.
8. 8. The titanium alloy bone grafting bed according to claim 7, characterized in that, The composite coating is provided with a bone particle placement layer.
9. 9. The titanium alloy bone grafting bed according to claim 1, characterized in that, The bodies in the two half-laminae are arranged in a butt joint.

Description

Titanium alloy bone grafting bed Technical Field The invention relates to the technical field of surgical instruments, in particular to a titanium alloy bone grafting bed. Background After lumbar spinal decompression, the vertebral plate defect causes the loss of the structure behind the vertebral column, the support is completely supported by the front, and the activity of the front intervertebral disc is easy to cause internal fixation failure. For the above reasons, it is necessary to install the lamina at the time of lumbar spinal decompression. The lamina of the diseased segment is surgically removed, thereby creating a lamina defect. Most of the existing vertebral plates are of a planar structure, cannot be well matched with the back shape of the spine, and are easy to cause difficult installation of vertebral plate prostheses and extraction of postoperative screws, and finally the operation effect is affected. Disclosure of Invention The invention aims to provide a titanium alloy bone grafting bed which is used for solving the problem of vertebral plate defect repair after lumbar spinal decompression. To this end, embodiments of the present invention provide a titanium alloy bone grafting bed. The titanium alloy bone grafting bed comprises two symmetrical semi-vertebral plates, wherein the semi-vertebral plates comprise a main body and a connector, the main body is in a plate shape, a plurality of through holes which are arranged in a displaying mode are formed in the main body, clamping columns are arranged on the side edges of the main body, a first open groove is formed in one end of the connector, the first open groove can be clamped on the clamping columns from bottom to top, a first stud is arranged in the first open groove so as to be tightly pressed on the clamping columns, a second open groove is formed in the other end of the connector, a fixing hole is formed in the top of the second open groove, the second open groove can be placed on a nail rod of a pedicle nail rod system in lumbar spinal stenosis vertebral canal decompression operation, and a second stud is arranged in the fixing hole so as to be tightly pressed on the nail rod, and the through holes are round holes with diameters of 2.5 mm-3 mm. In some embodiments, a polygonal hole is defined between every fourth of the through holes. In some embodiments, screw holes are provided at both ends of the body in a length direction of the body for mounting screws. In some embodiments, the screw is a cortical screw. In some embodiments, the longitudinal section of the first open slot is U-shaped, and the cross section of the first open slot is racetrack-shaped. In some embodiments, the upper surface of the body is provided with a composite coating comprising hydroxyapatite, the composite coating further comprising calcium carbonate powder. In some embodiments, the powder of the composite coating is sprayed on the surface of the titanium alloy matrix of the main body by adopting laser cladding, and the titanium alloy matrix of the main body is subjected to electric polarization treatment. In some embodiments, the composite coating has a bone particle placement layer disposed thereon. In some embodiments, the bodies in both of the half-laminae are in a docked arrangement. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings. Drawings In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art. Fig. 1 is a schematic view of a body in a titanium alloy bone grafting bed according to an embodiment of the invention. Fig. 2 is a schematic view of a joint in a titanium alloy bone grafting bed according to an embodiment of the invention. Reference numerals: The bone grafting bed 100 made of titanium alloy, a half vertebral plate 101, a main body 10, a through hole 11, a clamping post 12, a polygonal hole 13, a screw hole 14, a connector 20, a first open slot 21, a second open slot 22 and a fixing hole 23. Detailed Description The technical solution of the present invention will be clearly and completely described in conjunction with the specific embodiments, but it should be understood by those skilled in the art that the embodiments described below are only for illustrating the present invention and should not be construed as limiting