TWM483771U - Vertebroplasty bone plate - Google Patents

Description

Prosthetic bone plate

This creation relates to a shaped bone plate, especially a bone plate for spinal foramen surgery.

Vertebroplasty is to form an open side by cutting the left, right or middle end of the lamina behind the spine, and expand the vertebral space by open door, supplemented by bone plate fixation, thereby relieving nerve compression. symptom. In addition, autologous bone or artificial bone grafts are often fixed on the bone plate in clinical practice, thereby allowing the vertebrae at both ends of the open side to grow together to enhance system stability. However, due to the difficulty in shaping the autologous bone and limited surgical field, the nerve may be re-compressed after implantation of the bone plate. If artificial bone graft is used, there is only one screw fixed between the bone plate and the artificial bone graft, which may cause the risk of falling the bone graft at the beginning of the operation. In addition, bone fusion is a process in which human bone cells naturally grow and fuse together. The space between the bone graft and the spinal cord is limited. If the bone cells are overgrowth during bone fusion, the bone hyperplasia often causes the nerve to be re-stressed and requires reoperation. .

The present invention provides a shaped bone plate, the body of which is an irregular metal plate having a thickness of not more than 3 mm, and a screw hole is arranged on the top of the body, and a tool holding hole is arranged on the left and right sides of the screw hole, and a fixed vertebra fixed end is arranged on the left and right sides of the body. And a fixed end of the lamina, the fixed end of the vertebra and the fixed end of the lamina are provided with a plurality of bone nail holes, and a lamina end of the lamina is arranged below the fixed end of the lamina The rear side is provided with a side portion, and the top and bottom of the body form a bone-planting space with the side portion. The forming bone plate provided by the present invention, the bone placing space for placing a bone graft such as an autologous bone or an artificial bone, and screwing the screw hole into the screw hole to fix the implanted bone block, the side portion can be Completely coating the implanted bone graft can not only increase the stability of bone graft placement, but also limit the growth direction of bone cells, so that the hyperplastic bone does not compress the nerve. The tool clamping hole is clamped by the clamping tool to place the shaped osteoplast plate of the present invention into the implantation site, and the inclined surface of the fixed end of the vertebra and the fixed end of the lamina can fit the vertebrae and the vertebrae on both sides of the opening side The plate, the fixed end of the lamina and the latching end of the lamina form a lamina holding space, so that one side of the opening side of the lamina is engaged in the lamina holding space. After the positioning of the creation on both sides of the opening side is completed, the bone nail is screwed into the bone nail hole at the fixed end of the vertebra and the fixed end of the lamina to stabilize the interface between the creation and the vertebra, thereby improving the overall system stability.

10‧‧‧ screw holes

20‧‧‧Tool clamping hole

30‧‧‧ bone hole

40‧‧ ‧ fixed vertebrae

50‧‧‧ lamina fixed end

60‧‧ ‧ vertebral card end

70‧‧‧ side

80‧‧‧Bone bone placement space

90‧‧‧ laminar space

The first picture: a perspective view of the creation.

The second picture: a side view of this creation.

The following specific examples are merely illustrative of the best mode of the present invention and are not intended to limit the scope of the present invention. Appropriate changes and modifications can be made by those of ordinary skill in the art without departing from the spirit of the present invention.

Referring to the first to second figures, the present invention provides a shaped bone plate, the body of which is an irregular metal plate having a thickness of not more than 3 mm, and a screw hole 10 is disposed at the top of the body, and the screw hole 10 is provided on the left and right sides. The tool holding hole 20 is provided with a vertebral fixed end 40 and a lamina fixed end 50 on the left and right sides of the body, and the vertebral fixed end 40 and the lamina fixed end 50 are provided with a plurality of bone nail holes 30, A lamina insertion end 60 is disposed below the fixed end 50 of the lamina, and a side portion 70 is disposed on the front and rear sides of the body. The top and bottom of the body and the side portion 70 form a bone placement space 80. The forming bone plate provided by the present invention, the bone placing space 80 is for placing an autogenous bone or an artificial bone, and the screw hole 10 is screwed into the screw hole 10 to fix the implanted bone block. The part 70 can completely cover the implanted bone graft, in addition to increasing the stability of the bone graft placement, and also limiting the growth direction of the bone cells, so that the hyperplastic bone does not compress the nerve. The tool holding hole 20 is clamped by a clamping tool (not shown) to place the molded bone plate of the present invention into the implantation site, and the vertebral fixed end 40 and the inclined surface of the fixed end 50 of the lamina can be fitted. The vertebrae and the lamina on both sides of the open side, the lamina fixing end 50 and the lamina end 60 form a lamina holding space 90, so that one side of the opening side of the lamina is stuck to the lamina Within the solid space 90. After the positioning of the creation on both sides of the opening side, the bone nail is screwed into the bone fixation hole 40 and the plurality of bone nail holes 30 of the lamina fixing end 50 to stabilize the interface between the creation and the vertebrae, thereby improving the overall system stability. Sex.

10‧‧‧ screw holes

20‧‧‧Tool clamping hole

30‧‧‧ bone hole

40‧‧ ‧ fixed vertebrae

50‧‧‧ lamina fixed end

60‧‧ ‧ vertebral card end

70‧‧‧ side

80‧‧‧Bone bone placement space

Claims (3)

A forming bone plate whose body is an irregular metal plate having a thickness of not more than 3 mm, and a screw hole is arranged on the top of the body, and a tool holding hole is arranged on the left and right sides of the screw hole, and a vertebra fixed end and a vertebra are arranged on the left and right sides of the body The fixed end of the plate, the fixed end of the vertebra and the fixed end of the lamina are provided with a plurality of bone nail holes, a lamina end of the lamina is disposed below the fixed end of the lamina, and the front and rear sides of the body are provided with a side portion, the top and bottom of the body and the side The part forms a bone grafting space. The osteosynthesis bone plate according to claim 1, wherein the bone grafting space is for placing a bone graft such as an autologous bone or an artificial bone, and screwing the screw hole into the screw hole to fix the implanted bone block The side portion can completely cover the implanted bone graft. The shaped bone plate according to claim 1, wherein the fixed end of the lamina forms a lamina holding space between the end of the lamina, so that one side of the opening side is stuck to the vertebra The board is in the solid space.