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Hollow titanium rod for supporting collapse of femoral head

A femoral head and hollow technology, which is applied in the field of clinical orthopedic medical materials, can solve the problems of femoral head collapse, failure to prevent or correct femoral head collapse, etc., and achieve the effect of preventing femoral head collapse

Inactive Publication Date: 2010-06-09
杨新明
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AI Technical Summary

Problems solved by technology

[0002] At present, the early treatment method of femoral head necrosis recognized at home and abroad is core decompression. The bone defect left after the core decompression and the weak area of ​​the femoral neck will lead to the weakening of the support structure of the necrotic femoral head, which cannot prevent or correct the femoral head. Bone collapse, but will accelerate the collapse of the femoral head

Method used

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  • Hollow titanium rod for supporting collapse of femoral head
  • Hollow titanium rod for supporting collapse of femoral head

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Embodiment Construction

[0007] In the figure, there are 1 nail body, 2 nail tails, and 3 inner hexagonal notches.

[0008] It can be seen from the figure that the nail body of titanium rod 1 is a polished rod, the outer diameter of the rod is 10mm, and there is a through hole inside, the inner diameter of the through hole is 1.35mm. The outer diameter of the thread is 11mm, the pitch of the thread is 1.75mm, and the length of the whole nail is 75-110cm, and there is an inner hexagonal notch 3 at the tail end.

[0009] The supporting titanium rod of the present invention is entrusted to Jiangsu Xinrong Orthopedic Medical Instrument Company for processing.

[0010] The method of inserting the titanium rod of the product of the present invention:

[0011] Select a hollow titanium rod with an appropriate length, and under the guidance of fluoroscopy, slowly drive it into the beginning of the thick thread of the nail tail along the decompression hole of the medullary core. Under the bone cartilage, supp...

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Abstract

The invention relates to a medical material for orthopaedics in clinical medicine, in particular to a hollow titanium rod for supporting the collapse of the femoral head. At present, the accepted early treatment method of femoral head necrosis at home and abroad is core decompression, the remnant bone defect and femoral neck weak areas after core decompression can cause the supporting structure in the necrotic femoral head to be weakened, thus the collapse of the femoral head can not be prevented or corrected but can be quickened. The titanium screw rod of the invention is smooth, the outer diameter of the rod is 10mm, a through hole is arranged in the rod, the inner diameter of the through hole is 1.35mm, coarse threads are arranged at the tail of the screw rod, the length of the threads is 16-20mm, the diameter of a threaded core is 10mm, the outer diameter of the threads is 11mm, the distance between the threads is 1.75mm, the length of the whole screw rod is 75-110cm, and an inner hexagonal notch is arranged at the tail end. The product of the invention can be used for effectively preventing the collapse of the femoral head.

Description

technical field [0001] The invention relates to a medical material for orthopedics in clinical medicine, in particular to a hollow titanium rod for supporting the collapse of a femoral head. Background technique [0002] At present, the early treatment method of femoral head necrosis recognized at home and abroad is core decompression. The bone defect left after the core decompression and the weak area of ​​the femoral neck will lead to the weakening of the support structure of the necrotic femoral head, which cannot prevent or correct the femoral head. The collapse of the bone will accelerate the collapse of the femoral head. Contents of the invention [0003] The purpose of the present invention is to provide a hollow titanium rod supporting the collapse of the femoral head, provide permanent structural (mechanical) support for the subchondral bone of the femoral head, restore the concentric circle structure of the femoral head, and also repair and reconstruct the necrot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/74
Inventor 杨新明石蔚
Owner 杨新明
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