发明授权
US5674225A Extraction tool for a shaft of a hip joint prosthesis or of a
corresponding rasp
失效
用于髋关节假体或相应锉刀的轴的提取工具
- 专利标题： Extraction tool for a shaft of a hip joint prosthesis or of a corresponding rasp
- 专利标题（中）： 用于髋关节假体或相应锉刀的轴的提取工具
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申请号： US785565申请日： 1997-01-21
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公开(公告)号： US5674225A公开(公告)日： 1997-10-07
- 发明人: Stephan Muller
- 申请人： Stephan Muller
- 申请人地址： CHX Muensingen-Bern
- 专利权人： Protek AG
- 当前专利权人： Protek AG
- 当前专利权人地址： CHX Muensingen-Bern
- 优先权： EPX94810226 19940425
- 主分类号： A61B17/00
- IPC分类号： A61B17/00 ; A61B17/16 ; A61B17/92 ; A61F2/36 ; A61F2/46 ; A61B17/56
摘要：
The extraction tool comprises a sleeve part (13) which can be coupled to a neck portion (6) of a shaft which is to be withdrawn, and a coupling element (15) in the form of a collet which can be fitted onto the neck portion (6). The collet has an elongate section with wall segments (16a) which can be clamped against the neck portion (6), and comprises fittings (23) which can be guided into a constriction (24) of the neck portion (6), and a head part (17) which projects beyond the neck portion (6), wherein the head part (17) can be clamped against the sleeve part (13) via a bias screw (18). The coupling element (15) is loosely connected to the sleeve part (13) and fitted onto the neck portion (6). It can then be clamped by approaching the bias screw (16) against the sleeve part (13) and against the neck portion (6). A rigid yet easily releasable connection between the extraction tool and the shaft to be withdrawn is thus achieved in a simple manner.
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