发明名称 |
Arthroplasty trial prosthesis alignment devices and associated methods |
摘要 |
An adjustable trial prosthesis or prosthetic component provides a surgeon with the capability of efficiently and accurately examining a joint's functioning without having to remove a trial prosthesis insert and replace it with another sterilized insert. The adjustable trial has a first surface that approximates the top surface of the corresponding permanent prosthesis and a second surface that engages a bone. A distance adjustment mechanism can alter the distance between the first and second surfaces. The distance adjustment mechanism can include a screw oriented generally between the two surfaces or other distance adjustment mechanisms such as a fluid filled bladder. The adjustable trial can include force transducers to provide information on forces within the joint. To assist a surgeon with the alignment of portions of the musculo-skeletal system, a line of strong light is provided. The light source can be a laser or other suitable light source which is combined with appropriate optics. A balancing apparatus can be used to assess relative tensions on peri-articular soft tissue structures. The balance has a support that is adapted for rigid attachment directly or indirectly to a bone.
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申请公布号 |
US5733292(A) |
申请公布日期 |
1998.03.31 |
申请号 |
US19950529243 |
申请日期 |
1995.09.15 |
申请人 |
MIDWEST ORTHOPAEDIC RESEARCH FOUNDATION |
发明人 |
GUSTILO, RAMON B.;HAMMETT, RICHARD S.;LEW, WILLIAM D.;BECHTOLD, JOAN E. |
分类号 |
A61B17/58;A61B17/02;A61F2/00;A61F2/30;A61F2/38;A61F2/46;(IPC1-7):A61B17/56 |
主分类号 |
A61B17/58 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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