Self-stabilizing cervical interbody fusion cage and manufacturing die and method thereof

An intervertebral fusion device and a technology for manufacturing molds are applied in the field of intervertebral fusion devices to achieve the effect of improving safety

Active Publication Date: 2015-02-25
杨述华 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a self-stabilizing cervical intervertebral fusion device that uses a separate titanium plate or stainless steel plate to block the fusion device at the front end and has the above-mentioned defects. Self-stabilizing cervical intervertebral fusion device integrally formed with fusion device main body and anterior cervical fixation plate made of medical degradable polymer material and its manufacturing mold and manufacturing method

Method used

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  • Self-stabilizing cervical interbody fusion cage and manufacturing die and method thereof
  • Self-stabilizing cervical interbody fusion cage and manufacturing die and method thereof
  • Self-stabilizing cervical interbody fusion cage and manufacturing die and method thereof

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Embodiment 1

[0102] The main body 1 of the fusion device is made of mineralized collagen material; the size of the main body 1 of the fusion device is 14.0 mm in length, 12.5 mm in width, the height of the front end is 7.0 mm, and the height of the rear end is 6.0 mm; the upper and lower end surfaces of the fusion device body 1 have a depth of 0.35 mm. mm, a tooth-like structure with a spacing of 2.0mm; the left and right sides of the fuser body 1 are centered near the back with a cylindrical vertical through-hole 12 with a diameter of 4.6mm, and the distance from the center of the vertical through-hole 12 to the rear end surface of the fuser body 1 is 6.3mm . During the manufacturing process, it is necessary to accurately weigh 1.93g (accurate to 0.01g) of mineralized collagen powder, put it into the first forming mold 31, hold the pressure for 90 seconds under a pressure of 1000MPa, and carry out the cold pressing molding of the cage body. After testing, the material density of the fuser...

Embodiment 2

[0106] The main body 1 of the fusion device is made of mineralized collagen material; the size of the main body 1 of the fusion device is 15.0 mm in length, 12.0 mm in width, the height of the front end is 8.0 mm, and the height of the rear end is 7.0 mm; the upper and lower end surfaces of the fusion device body 1 have a depth of 0.5 mm, a tooth-like structure with a spacing of 2.0mm; the left and right sides of the fuser body 1 are centered near the back, and there is a square vertical through hole 12 with a side length of 5.5mm, and the distance from the center of the vertical through hole 12 to the rear end surface of the fuser body 1 is 7.0mm . During the manufacturing process, 2.27g (accurate to 0.01g) of mineralized collagen powder needs to be accurately weighed, loaded into the first molding die 31, and held at a pressure of 900MPa for 120 seconds to cold-press the main body of the cage. After testing, the material density of the fuser main body 1 of this embodiment is...

Embodiment 3

[0110] The main body 1 of the fusion device is made of mineralized collagen material; the size of the main body 1 of the fusion device is 16.0 mm in length, 14.0 mm in width, 9.0 mm in height at the front end, and 7.5 mm in height at the rear end; the upper and lower end surfaces of the fusion device body 1 have a depth of 0.6 mm, a tooth-like structure with a spacing of 2.2mm; the center of the fuser body 1 has a cylindrical vertical through-hole 12 with a diameter of 6.0mm near the back, and the distance from the center of the vertical through-hole 12 to the rear end surface of the fuser body 1 is 8.0mm . During the manufacturing process, it is necessary to accurately weigh 3.18g (accurate to 0.01g) of mineralized collagen powder, put it into the first forming mold 31, hold the pressure at 1100MPa for 80 seconds, and carry out the cold-press molding of the cage body. After testing, the material density of the fuser main body 1 of this embodiment is 1.72g / cm 3 , The axial co...

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Abstract

The invention relates to a self-stabilizing cervical interbody fusion cage and a manufacturing die and method thereof. The self-stabilizing cervical interbody fusion cage comprises a fusion cage body made of mineralized glue and an anterior cervical approach fixing plate made of medical degradable polymer materials, the fusion cage body is in a wedge shape, the front portion of the fusion cage body is high, the rear portion of the fusion cage body is low, the anterior cervical approach fixing plate is located at the front end of the fusion cage body and is integrally formed with the fusion cage body, and the upper end and the lower end of the anterior cervical approach fixing plate are respectively provided with a fixing hole used for fixation of the cervical vertebra. The anterior cervical approach fixing plate and the fusion cage body are integrally formed so that the whole self-stabilizing cervical interbody fusion cage can be fixed to the upper cervical vertebra body and the lower cervical vertebra body and can be prevented from slipping off forwards or sliding backwards, and accordingly the fusion cage can be prevented from pressing nervous centralis; the fusion cage body made of the mineralized glue can be degraded and absorbed and can guide generation of new bones, the anterior cervical approach fixing plate made of the medical degradable polymer materials can be automatically degraded after an operation, and the trouble that another operation needs to be carry out to take out the fusion cage body is avoided.

Description

technical field [0001] The invention relates to intervertebral fusion device technology, and more specifically relates to a self-stabilizing cervical intervertebral fusion device and its manufacturing mold and manufacturing method. Background technique [0002] Interbody fusion cage, also often referred to as spine cage, is a medical device commonly used in clinical intervertebral bone graft fusion surgery. It is mostly used in total intervertebral disc replacement. After the necrotic intervertebral disc, inserting an intervertebral fusion device equipped with autologous bone or other bone grafting materials can effectively immediately stabilize, expand and maintain the height of the intervertebral space, and promote the fusion of adjacent segments of the vertebral body. [0003] Currently, intervertebral fusion devices in clinical use are mainly made of materials such as titanium alloy, stainless steel, polyether ether ketone, carbon fiber, and allogeneic bone. However, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44A61B17/70
Inventor 刘先哲杨述华崔福斋许伟华王晶仇志烨张自强
Owner 杨述华
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