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Broadwin Alan, Vassallo Charles, Logan Joseph N, Hornlein Robert W: Apparatus for providing enhanced tissue fragmentation and/or hemostasis.. Cavitron, April 5, 1989: EP0310431-A2 (595 worldwide citation)

An apparatus having a vibratable tip (22) for ultrasonically disintegrating tissue in a surgical procedure and for aspirating the disintegrated tissue and fluid away from the surgical site (12) through an opening (24) in the tip. A connection (42) to the electrosurgical unit provides for delivery of ...


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Broadwin Alan, Kleesattel Claus: Improved resonator for surgical handpiece.. Valleylab, July 4, 1990: EP0376562-A2 (372 worldwide citation)

An ultrasonic resonant vibrator comprising an ultrasonic vibration magnetostrictive transducer (1) and a resonant member (2,3) having a proximal end and a distal end for transmitting ultrasonic vibrations to an operating member (3) which is part of the resonant structure. The vibrator comprises an i ...


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Broadwin Alan, Emery Leonard Meredith: Magnetostrictive transducer.. Valleylab, June 27, 1990: EP0375302-A1 (344 worldwide citation)

A magnetostrictive transducer comprising a plurality of elongated strips (31) of magnetostrictive material, each strip having a proximal end and a distal end and being attached to its adjacent strip at the ends to form an integral substantially rigid column having a central axis with fins extending ...


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Broadwin Alan, Logan Joseph Nicholas, Kuhl Peter Joseph: Apparatus for providing enhanced tissue fragmentation and/or hemostasis.. Valleylab, January 20, 1993: EP0523174-A1 (340 worldwide citation)

An improved devices for delivering RF current to the operating tool (6) of an ultrasonic surgical apparatus which comprises a switch module for selecting said RF current, an electrically conducting metal band (18) connected to the switch module and an electrically conductive O-ring (19) in electrica ...


5
Broadwin Alan, Klicek Michael S, Kreizman Alexander S, Olichney Michael D, Rose Emery S: An ultrasonic surgical handpiece and an energy initiator to maintain the vibration and linear dynamics. Valleylab, April 23, 1997: EP0768840-A1 (339 worldwide citation)

An ultrasonic oscillator (46) drives a tool at a set frequency. An amplitude control runs the oscillator (46) to set the vibration level. A frequency regulator joins the amplitude and the oscillator (46). A control feedback loop (49), in the frequency regulator, keeps handpiece linear dynamics. An o ...


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Kreizman Alexander, Broadwin Alan: Angulated ultrasonic surgical handpieces.. Cooper Lasersonics, December 16, 1987: EP0248844-A1 (335 worldwide citation)

An improved ultrasonic surgical handpiece includes an angled connecting body between the transducer and operative tip, with the connecting body being bent at a location between the node and antinode at its respective ends and with a second nodal plane support in the transducer section. The vibrating ...


9
Weiss Steven N, Broadwin Alan: Flow control system. Cavitron Corporation, Pohl Philip H, Sperber Philip, September 2, 1975: US3902495 (109 worldwide citation)

A fluidic control system for use in irrigation and aspiration of the anterior chamber of the eye during ultrasonic emulsification of a cataract therein. The system comprises a handpiece with an (ultrasonically vibrated) hollow tip, the hollow tip being connected to the fluid withdrawal or aspirating ...


10
Weiss Steven N, Broadwin Alan: Regulateur de debit, Flow control system. Cavitron Corporation, December 25, 1979: CA1068572 (11 worldwide citation)

ABSTRACT A fluidic control system is provided for use in irrigation andaspiration of the anterior chamber of the eye during ultrasonic fragmentationof a cataract therein. The system comprises a handpiece with an (ultrason-ically vibrated) hollow tip, the hollow tip being connected to the fluid with- ...