发明名称 |
Tool bit for a motor driven surgical instrument |
摘要 |
A surgical instrument has a housing which contains a motor that drives a spindle. A tool bit is attached to the motor by a holder that includes a body with a first end portion connected to the spindle, a central portion with a cavity therein, and a second end portion having an aperture through which a shaft of the tool bit passes into the cavity. A pair of lock pawls are pivotally mounted in the cavity with each one having a first tab that enters a slot in the shaft when the lock pawls are in a first position to hold the tool bit in the instrument. The first tabs retract from the slot when the lock pawls are in a second position for changing the tool bit. The lock pawls have second tabs that engage a restrainer only in the second position to prevent the body from rotating. A ring extends around the body and pivots the lock pawls between the first and second positions when the ring moved longitudinally along the body. A manually operable shift lever is pivotally coupled to the housing and move the ring longitudinally along the body.
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申请公布号 |
US5601560(A) |
申请公布日期 |
1997.02.11 |
申请号 |
US19940320057 |
申请日期 |
1994.10.07 |
申请人 |
THE ANSPACH EFFORT, INC. |
发明人 |
DEL RIO, EDDY H.;ANSPACH, JR., WILLIAM E. |
分类号 |
A61B17/00;A61B17/16;(IPC1-7):A61B17/56 |
主分类号 |
A61B17/00 |
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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