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Absorbable hollow pin for lock pin and preparation method

A technology of hollow nails and locking nails, which is applied in the field of medical equipment, can solve the problems of unusable, low mechanical strength and decreased mechanical properties of absorbable nails, and achieve the effects of small deformation, relief of economic burden and pain, and high strength

Inactive Publication Date: 2015-04-29
王永清 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the degradation time increases, the mechanical properties of this intramedullary nail decline rapidly; the most important reason is that the absorbable nails currently used at home and abroad have low mechanical strength and cannot be used in places with high stress

Method used

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  • Absorbable hollow pin for lock pin and preparation method
  • Absorbable hollow pin for lock pin and preparation method
  • Absorbable hollow pin for lock pin and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An absorbable hollow nail for locking nails, which includes a locking nail 1 and an absorbable hollow nail 2; the absorbable hollow nail 2 is a screw-like hollow nail of polylactic acid resin, and the screw-like absorbable hollow nail of polylactic acid resin The hollow nail 2 includes a screw head 3 and a screw rod 5, the screw head 3 is provided with a screw groove 4, the outside of the screw rod 5 is provided with threads, the inside of the screw rod 5 is a hollow cylinder 6, and the hollow cylinder 6 has a built-in locking screw 1 matching the volume of the hollow cylinder 6 .

[0028] The screw groove 4 is in-line.

[0029] The length of the absorbable hollow nail 2 is 60mm, the diameter of the screw rod 5 is 8.0mm, the length of the hollow cylinder 6 inside the screw rod is 80% of the total length of the screw, i.e. 48mm, and the diameter of the hollow cylinder 6 is 50% of the diameter of the screw rod 5, That is 4.0mm;

[0030] The locking nail 1 is a titanium ...

Embodiment 2

[0035] Embodiment 2: a kind of absorbable hollow nail that is used for locking nail, it comprises locking nail 1 and absorbable hollow nail 2; Absorbable hollow nail 2 is the screw-shaped hollow nail of polylactic acid resin, the screw of polylactic acid resin Shaped absorbable hollow nails include a screw head 3 and a screw rod 5, the screw head 3 is provided with a screw groove 4, the outside of the screw rod 5 is provided with threads, the inside of the screw rod 5 is a hollow cylinder 6, and the hollow cylinder 6 has a built-in lock matching the volume of the hollow cylinder. Nail 1.

[0036] The screw groove 4 is in-line.

[0037] The length of the absorbable hollow nail 2 is 30mm, the diameter of the screw rod 5 is 8.0mm, and the length of the hollow cylinder inside the screw rod is 80% of the total length of the absorbable hollow nail 2, i.e. 24mm; the diameter of the hollow cylinder 6 is the diameter of the screw rod 5. 40%, or 3.2mm.

[0038] The locking nail 1 is a...

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Abstract

The invention discloses an absorbable hollow pin for a lock pin and a preparation method. The absorbable hollow pin for the lock pin comprises the lock pin and an absorbable hollow pin body; the absorbable hollow pin body is a screw shaped hollow pin prepared from polylactic resin; a threaded slot is formed in a threaded head of the absorbable hollow pin body; threads are formed in the outer surface of a screw in which a hollow cylinder is positioned; the lock pin in match with the hollow cylinder in size is arranged in the screw. According to the absorbable hollow pin for the lock in, the polylactic resin high polymer material of the absorbable hollow pin can be absorbed by a human body, so that one operation can be decreased in the later period of fracture treatment, the manpower and material waste can be reduced, the pain of a patient can be relieved, and the risk of wound infection can be decreased; the absorbable hollow pin has a good medical application prospect.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, and in particular relates to an absorbable hollow nail for locking nails used for combining and fixing bones in orthopedic surgery and a preparation method thereof. Background technique [0002] With the development of social economy and the improvement of social level, human beings are paying unprecedented attention to their own medical and health undertakings. As an important means of modern medicine—an important basis and component of medical devices, biomaterials are used for the diagnosis and treatment of diseases, the repair or function enhancement of tissues and organs, and the recovery of a large number of patients who are struggling on the verge of pain. With the pace of an aging society, the number of fractures caused by the fragile bones of the elderly is increasing year by year, and the number of fractures caused by accidents in the construction, manufacturing, and transport...

Claims

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Application Information

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IPC IPC(8): A61B17/72
CPCA61B17/725
Inventor 王永清张军平杨吕昆吕跃群俞慧菊
Owner 王永清
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