BIDIRECTIONALLY RATCHETING SURGICAL INSTRUMENT

A tool for driving a workpiece during surgical procedures has a handle. A gear with teeth thereon is rotatably supported along an axis within the handle. Two pawls are pivotally supported by the handle adjacent the gear and are orbital about the axis upon rotation of the handle. Each pawl has teeth...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MOYER DOUGLAS A, LIMBERG KURT P
Format:	Patent
Sprache:	eng
Schlagworte:	DIAGNOSIS HAND TOOLS HUMAN NECESSITIES HYGIENE IDENTIFICATION MANIPULATORS MEDICAL OR VETERINARY SCIENCE PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS SURGERY TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING TRANSPORTING
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Beschreibung
Zusammenfassung:	A tool for driving a workpiece during surgical procedures has a handle. A gear with teeth thereon is rotatably supported along an axis within the handle. Two pawls are pivotally supported by the handle adjacent the gear and are orbital about the axis upon rotation of the handle. Each pawl has teeth that engage the gear teeth to transmit torque from the handle to the workpiece. Two springs yieldingly urge the pawls into engagement the gear teeth. A cap, with an actuator thereon, is rotatable with respect to handle. The cap has a first position in which the actuator retracts the first pawl out of engagement with the gear teeth, a second position in which the actuator retracts the second pawl out of engagement with the gear teeth, and a third position in which neither the first pawl nor the second pawl is retracted by the actuator.