Tool bit drive shaft connection and method

Details Tool bit drive shaft connection and method Tool bit drive shaft connection and method

2005-07-19

2005-07-19

Reip, David O. (Department: 3731)

Surgery

Instruments

Orthopedic instrumentation

C403S381000

Reexamination Certificate

active

06918913

ABSTRACT:
A surgical instrument is described that has a distinctive torque-transmitting coupling assembly. A tubular member made of super-elastic alloy has a driven end and a driving end with an integral tongue member, which defines a passageway that extends along a first axis. A fitting member defines a shape presenting a first mating interface surface. A tool-bit member has a second axis and presents a second mating interface surface adapted for receptive complemental facing with the first mating interface surface, including a recess formed in the second mating interface surface. Relative motion activates the super-elastic alloy of the tongue, which detentively snaps into the recess to align the first and second axes with one another. A flexible surgical reamer is similarly disclosed, where the fitting has an aperture opening onto the first mating interface surface and the tongue projects through the aperture.

REFERENCES:
patent: 4706659 (1987-11-01), Matthews et al.
patent: 5499984 (1996-03-01), Steiner et al.
patent: 5549613 (1996-08-01), Goble et al.
patent: 6053922 (2000-04-01), Krause et al.

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