Surgery – Instruments – Cutting – puncturing or piercing
Reexamination Certificate
2005-09-20
2005-09-20
Woo, Julian W. (Department: 3731)
Surgery
Instruments
Cutting, puncturing or piercing
C604S022000
Reexamination Certificate
active
06945981
ABSTRACT:
According to the invention, a finger-operated switch for activating and operating an ultrasonic surgical handpiece is provided. The power output of the surgical handpiece is responsive and proportional to the pressure applied to the finger-operated switch. The finger-operated switch includes, but not limited to, force sensitive resistors whose resistance is proportional to the force applied by the finger of the human operator of the surgical handpiece, force sensitive capacitors whose capacitance is proportional to the pressure, deflection or compression of the insulation layer between two electrodes or is proportional to the spacing between the two conductive layers, strain gauges mounted underneath or integral to the housing of the surgical handpiece such that the pressure applied thereto results in an output change in the strain gauges, magnets or ferromagnets encased or embedded in an elastomer with a sensor inside the surgical handpiece that detects the field strength of the magnet and monitors changes relative to the force applied to the handpiece housing, and piezo film or piezo ceramic whose charge or voltage is proportional to the force applied.
REFERENCES:
patent: 2917691 (1959-12-01), De Prisco et al.
patent: 4321530 (1982-03-01), Kelly et al.
patent: 4979952 (1990-12-01), Kubota et al.
patent: 5001649 (1991-03-01), Lo et al.
patent: 5026387 (1991-06-01), Thomas
patent: 5060658 (1991-10-01), Dejter et al.
patent: 5112300 (1992-05-01), Ureche
patent: 5180363 (1993-01-01), Idemoto et al.
patent: 5400267 (1995-03-01), Denen et al.
patent: 5425704 (1995-06-01), Sakurai et al.
patent: 5449370 (1995-09-01), Vaitekunas
patent: 5630420 (1997-05-01), Vaitekunas
patent: 5707369 (1998-01-01), Vaitekunas et al.
patent: 5879364 (1999-03-01), Bromfield et al.
patent: 5968007 (1999-10-01), Simon et al.
patent: 6013048 (2000-01-01), Podany et al.
patent: 6017354 (2000-01-01), Culp et al.
patent: 6019775 (2000-02-01), Sakurai
patent: 6037724 (2000-03-01), Buss et al.
patent: 6066135 (2000-05-01), Honda
patent: 6090123 (2000-07-01), Culp et al.
patent: 6252334 (2001-06-01), Nye et al.
patent: 2 326 346 (1998-12-01), None
European Search Report dated Dec. 01, 2003.
Born Jason A.
Donofrio William T.
Gill Robert P.
Harper Richard M.
Schramm Mary E.
Ethicon-Endo Surgery, Inc.
Nguyen Victor X
Woo Julian W.
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