发明名称 |
MULTI-POSITION RATCHET MECHANISM |
摘要 |
A multi-position ratchet mechanism for holding a surgical retractor blade which permits a retractor blade to be rotated into the wound and retracted at the same time to duplicate the natural "toe-in" method of retraction achieved with the hand. The ratchet mechanism includes a ratchet holder to which is pivotably attached a ratchet pivot housing. The retractor blade is mounted in an opening projecting through ratchet pivot housing and held in position by a retractor pawl attached to the ratchet pivot housing. The ratchet pivot housing also has a curved ratchet which depends into a cooperating slot in the ratchet holder and engages a pivot pawl rotatably mounted and spring biased into the ratchet slot. The holder includes a transverse slot which slides onto an oval ring which is mounted about the incision site. |
申请公布号 |
GB2107990(A) |
申请公布日期 |
1983.05.11 |
申请号 |
GB19820028907 |
申请日期 |
1982.10.08 |
申请人 |
* CODMAN AND SHURTLEFF |
发明人 |
JOHN ROBERT * BOOKWALTER;ALAN I * WEST |
分类号 |
A61B17/02;(IPC1-7):61B17/02 |
主分类号 |
A61B17/02 |
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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