Inter vertebral fusing device
A fusion device and intervertebral technology, applied in the direction of internal bone synthesis, medical science, internal fixator, etc., can solve the problems of slowness, short half-life, unsatisfactory effect, etc., to prevent displacement, improve related symptoms, design reasonable effect
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Embodiment 1
[0026] Embodiment 1: The poly DL-lactic acid material (molecular weight: 400,000) is molded by an injection machine at an injection temperature of 200-250° C. to make an intervertebral fusion device. The cross-section of the hollow cylinder is quadrangular, and the side wall is perforated (diameter 2mm). The finished product is tested and has a pressure resistance of 930 kg.
Embodiment 2
[0027] Example 2: The L-polylactic acid material (molecular weight: 400,000) is molded into an intervertebral fusion device through an injection machine. The injection temperature is 220-225°C. The cross-section of the hollow cylinder is quadrangular, and the side wall is open. (diameter is 2mm), the finished product has been tested, and the pressure resistance is 975 kg.
Embodiment 3
[0028] Example 3: DL-lactic acid and L-lactic acid (30:70, molecular weight: 500,000) copolymer material were molded into an intervertebral fusion device through an injection machine, and the injection temperature was 175-180°C. The cross-section of the hollow cylinder is quadrangular, and the side wall is perforated (diameter 2mm). The finished product is tested to withstand a pressure of 980 kg.
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