Hollow guiding inward contraction pressurizing bone bolt

A hollow guide and bolt technology, applied in the field of medical devices, can solve the problems of patient pain and psychological burden, affect limb function, limited exposure space, etc., and achieve the effect of reducing pain and psychological burden, reducing trauma, and reducing surgical incision

Inactive Publication Date: 2010-05-12
张玉岩 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the instruments used for human tissue fixation need to be sterilized, and the exposure space of the screw is limited after being fixed in the human body, the protruding part formed by the screw beyond the nut cannot be cut off by general sterilized surgical instruments, and industrial application tools cannot be used due to the

Method used

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  • Hollow guiding inward contraction pressurizing bone bolt
  • Hollow guiding inward contraction pressurizing bone bolt
  • Hollow guiding inward contraction pressurizing bone bolt

Examples

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Example Embodiment

[0009] Hollow guide internal shrinkage compression bone bolt, composed of male screw screw (1) and female screw nut (2), male screw screw (1) is hollow (3) design, female screw nut (2) is hollow (4) Design, hollow (3) and hollow (4) have the same diameter. The six-flute screw hole (7) of the male screw screw (1) nut (5), and the six-flute screw hole (8) of the female screw nut (2) the nut (6). The male screw screw (1) is designed with a guide module (9), and the female screw nut (2) is designed with a guide sleeve (10). The male screw screw (1) is designed with a male screw (11), and the female screw nut (2) is designed with the female screw (12), and the male screw (11) and the female screw (12) have the same pitch.

[0010] When the hollow (3) and hollow (4) corresponding to the male threaded screw nail (1) and the female threaded nut (2) match the Kirschner wire (13) into the bone part that is expected to be screwed into the bone bolt, the application is The threaded screw n...

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Abstract

The invention relates to the technical field of medical appliance, in particular to an internal fixation appliance used for fixing fracture site in orthopedics department. A hollow guiding inward contraction pressurizing bone bolt is composed of a male thread screw pin and a female thread nut pin. The a male thread screw pin and the female thread nut pin are put in the bones of the human body guided by a kirschner wire, the contraction pressurizing action is realized by mutual displacement in the screwing process, after finishing operation, only two nuts are left on the surface of the bones, the condition that the screw of the traditional bolt exceeds the nut to form a protruding part can not appear in the process.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an internal fixation device for fixing fracture parts in orthopedics. Background technique [0002] At present, the bone bolts used in orthopedic internal fixation are basically the same as the bolts used in our daily and industrial applications. They are composed of a threaded screw and a nut. Protrusions usually occur when the screw protrudes beyond the nut during pressurization. Because the instruments used for human tissue fixation need to be sterilized, and the exposure space of the screw is limited after being fixed in the human body, the protruding part formed by the screw beyond the nut cannot be cut off by general sterilized surgical instruments, and industrial application tools cannot be used due to the need for sterilized treatment. During the operation, the screw rod forms a protruding part in the soft tissue outside the human skeleton, which stimulates the f...

Claims

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Application Information

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IPC IPC(8): A61B17/86
Inventor 张玉岩宋世江
Owner 张玉岩
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