Surgery – Instruments – Cutting – puncturing or piercing
Patent
1996-08-16
1997-03-11
Buiz, Michael
Surgery
Instruments
Cutting, puncturing or piercing
606178, 606159, A61B 1732
Patent
active
056096020
ABSTRACT:
Rotary oscillatory coupling includes a pair of opposed hubs which are independently rotatable about a common axis. Pairs of permanent magnets are provided in the opposed faces of the hubs. The proximal hub is continuously rotated in a selected rotational direction by a suitable motor. During a portion of the proximal hub's rotation, the distal hub will concurrently be rotated by virtue of the magnetic field interaction that occurs between the magnet pairs. The distal hub is, however, prevented from rotating a complete cycle by virtue of a mechanical stop. Upon encountering the mechanical stop, the rotation direction of the distal hub will be reverse to that of the continuously rotating proximal hub. When the magnets of the proximal and distal hubs again are in proximity to one another, the distal hub will then experience another reversal of rotation direction so that it rotates in the same direction as the proximal hub. This functional process repeats itself during subsequent rotational cycles to cause the distal hub to undergo high frequency oscillations.
REFERENCES:
patent: 3978862 (1976-09-01), Morrison
patent: 5269794 (1993-12-01), Rexroth
patent: 5376078 (1994-12-01), Dinger, III et al.
Dodge Brian
Hickingbotham Dyson
Machemer Robert
Buiz Michael
Duke University
Truong Kevin
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