Interbody fusion cage and interbody reduction device
A technology of intervertebral fusion device and fusion device, which is applied in the direction of fixator, medical science, prosthesis, etc., can solve the problems of unstable contact between fusion device and vertebral body, non-adjustable contact area, inconvenient bone implantation, etc. Achieve the effects of facilitating osseointegration, improving osteoinductive ability, and saving operation time
Active Publication Date: 2019-11-29
GENERAL HOSPITAL OF THE NORTHERN WAR ZONE OF THE CHINESE PEOPLES LIBERATION ARMY
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Problems solved by technology
[0005] In order to solve the problems of unstable contact between the fusion device and the vertebral body, the non-adjustable contact area between the fusion device and the vertebral body, inconvenient bone implantation and less bone grafting, the technical problem to be solved by the present invention is to provide a An intervertebral fusion device with stable contact of vertebral bodies, adjustable contact area, large amount of bone grafting and convenient bone grafting
[0006] In order to solve the problem that the above-mentioned intervertebral reducer has the functions of vertical expansion and horizontal lifting and pulling, the technical problem to be solved by the present invention is to provide a reducer with functions of vertical expansion and horizontal lifting and pulling.
Method used
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[0032] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of systems and methods consistent with aspects of the present application as recited in the claims.
[0033] see figure 1 , is a schematic diagram of the fuser structure, figure 2 , which is the top view of the fuser, image 3 , is a schematic diagram of the bone grain implantation rod structure, Figure 4 , is a schematic diagram of the structure of the built-in bolt implanted rod.
[0034] The interior of the fusion device is a through hole of a rectangular column along the height direction, and the fusion device includes ...
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The invention relates to an interbody fusion cage and an interbody reduction device. The fusion cage comprises a fusion cage body, fixing teeth, lateral arch blades and an internal bolt, wherein the fixing teeth are arranged on two side surfaces of the fusion cage body in a height direction, the lateral arch blades are arranged on the middle portion of the fusion cage body in the height direction,and the internal bolt is arranged on the middle portions of the lateral arch blades. The reduction device comprises a spreader, spreading rods, a cylindrical sliding groove, a lifting rod and an anchor, wherein the spreader is connected with the spreading rods, the spreading rods are connected with the lifting rod and the anchor, and the spreader supports the spreading rods which slide on the cylindrical sliding groove. According to the fusion cage, through spreading of the lateral arch blades, a contact area between the fusion cage and a vertebral body is enlarged, so that reduction of the sliding vertebral body and interbody fusion are benefited; and the reduction device has functions of vertical spreading and transverse reduction by leverage at the same time through the lifting rod.
Description
technical field [0001] The invention relates to the field of medical equipment, in particular to an intervertebral fusion device and a reset device. Background technique [0002] Lumbar spondylolisthesis refers to partial or complete slippage of the upper vertebral body and the lower vertebral body surface due to abnormal connection between vertebral bodies. If surgery is used to treat spondylolisthesis, the spondylolisthesis site needs to be reset, and intervertebral fusion is performed after the spondylolisthesis is reset. , so that the spine reaches a relatively stable state. [0003] There are two types of traditional intervertebral fusion cages: screw-shaped fusion cage and box-shaped fusion cage. Rotary cutting during the implantation of the screw-shaped intervertebral fusion cage will damage the endplate. In addition, the contact surface between the screw-shaped fusion cage and the vertebral body is prone to damage. Moving, the contact area between the holes on the t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): A61F2/44A61B17/02A61B17/88
CPCA61B17/025A61B17/885A61B17/8866A61B2017/0256A61F2/30749A61F2/447A61F2002/30265A61F2002/3085
Inventor 项良碧王洪伟
Owner GENERAL HOSPITAL OF THE NORTHERN WAR ZONE OF THE CHINESE PEOPLES LIBERATION ARMY