一种从内向外锁定的髓内钉

Intramedullary nail locked from inside to outside

  • Inventors: ZHANG JIANLIN
  • Assignees: 张建林
  • Publication Date: August 29, 2012
  • Publication Number: CN-202397579-U

Abstract

一种从内向外锁定的髓内钉,包括A段和B段,A段上开有2个锁孔A,B段上开有2个锁孔B;在B段的内部沿轴向设置有2个浅孔,浅孔的一端开口在B段的端面上,另一端与锁孔B相通;在A段的内部设置有两个深孔,深孔延伸至B段内,且一端的开口位于B段的端面上,另一端与锁孔A连通;2个深孔和2个浅孔内都设置有一个中心杆,4个中心杆的一端都为尖头,每个中心杆的尾部都设置有尾帽。提供了一种结构简单、操作容易、手术容易,耗时少,只有一处切口的中心型自内向外锁定髓内钉,该髓内钉具有轴向持骨的稳定性,可抗剪弯折旋等多方面移位,且无应力遮挡和应力集中及偏向应力。
An intramedullary nail locked from inside to outside comprises an A-section and a B-section, wherein two lockholes A are arranged on the A-section and two lockholes B are arranged on the B-section; two shallow holes are arranged axially in the inside of the B-section, an opening at one end of each of the shallow holes is formed on the end face of the B-section and an opening at the other end of the shallow hole is communicated with the lockhole B; two deep holes are arranged in the inside of the A-section and extend towards the B-section, an opening at one end of each of the deep holes is located on the end face of the B-section and an opening at the other end of the deep hole is communicated with the lockhole A; centre rods are arranged in the inside of two deep holes and two shallow holes, one end of each of the four centre rods is a sharp head, the tail part of each of the centre rods is provided with a tail cap. The central type intramedullary nail which is locked from inside to outside and provided with only one incision is provided and has advantages of simple structure, easy operation and surgery and less time consumption, has stability of holding bones axially, can resist multi-aspect shifts such as shearing, blending, folding and rotating, and does not cause stress shielding, stress concentration or bias stress.

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-102551859-AJuly 11, 2012张建林Lock-containing intramedullary nail locked from inside to outside
    CN-102551859-BFebruary 05, 2014张建林Lock-containing intramedullary nail locked from inside to outside