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In vivo cervical vertebra fusion implant article

A technology of implants and cervical spine, applied in spinal implants, prostheses, medical science, etc., can solve problems such as difficulty in evaluating vertebral body fusion, inability to maintain spinal curves, impermeability of metal objects, etc., to increase bone conduction , prevent vertebral body collapse, simple manufacturing process

Inactive Publication Date: 2009-04-15
杭州艾力康医药科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the most widely used cervical fusion cages in clinical practice mainly include linear threaded cage and rectangular cage, and the materials are mostly biomedical metal materials such as Ti6Al4V and Ni-Ti shape memory alloys. There are certain differences in the cervical intervertebral space, which cannot maintain the normal spinal curve. Postoperative vertebral body collapse, malunion, and cervical intervertebral space stenosis are likely to occur. In addition, metal objects are opaque to X-rays, and it is difficult to evaluate the intervertebral fusion status after surgery.

Method used

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  • In vivo cervical vertebra fusion implant article
  • In vivo cervical vertebra fusion implant article

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Embodiment Construction

[0017] Further illustrate the present invention below in conjunction with accompanying drawing.

[0018] With reference to the accompanying drawings, the internal cervical fusion implant of the present invention comprises a flat wedge-shaped frame 1, the frame is separated by reinforcing ribs 2 inside to form two inner cavities 3, and calcium phosphate is filled in the inner cavity 3, and the upper ribs The surface is arc-shaped and raised, the upper and lower surfaces of the frame and the reinforcing ribs are respectively provided with serrations 4, and two protruding quadrangular pyramids 5 are arranged symmetrically on the lower surface of the frame. Two symmetrical holes 6 are arranged on the lower surface of the frame, and titanium alloy nails for developing are embedded in the two holes. A propulsion hole 7 with an internal thread is provided on the front side wall of the frame.

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Abstract

The invention discloses an interbody vertebra fusion implant, which comprises a flat wedge-shaped frame, wherein the frame is separated by a reinforcing rib which is arranged in the frame to two inner cavities in which calcium phosphate is filled; and the upper surface of the reinforcing rib is arch-protrusion shaped, the upper surfaces and the lower surfaces of the frame and the reinforcing rib are provided with saw teeth respectively, and the lower surface of the frame is provided with two rectangular pyramids protruded outwards symmetrically. The interbody cervical vertebra fusion implant has the advantages of high intensity, good tenacity, no centrum collapse after operation, convenient implant, reliable and excellent biocompatibility.

Description

technical field [0001] The invention relates to an implant for cervical vertebra fusion in vivo. Background technique [0002] Cervical fusion has been used for more than 20 years in the treatment of cervical diseases. Since Robinson-Smith and Cloward pioneered cervical decompression and bone graft fusion in the 1950s, because this technology can effectively remove the intervertebral disc protruding to the front of the tapered canal, Osteophytes and fragments of fractures can be grafted and fused at the same time, so it has been widely used in the treatment of cervical trauma, tumors, and cervical spondylosis. However, autografts have many disadvantages, such as easy displacement and collapse leading to loss of intervertebral height. Therefore, both at home and abroad have been devoting themselves to developing new cervical fusion device. At present, the most widely used cervical fusion cages in clinical practice mainly include linear threaded cage and rectangular cage, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44A61L27/18A61L27/12
CPCA61F2/44A61F2002/30001
Inventor 郑隆泗邬震泰涂江平
Owner 杭州艾力康医药科技有限公司
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