06723091 is referenced by 437 patents and cites 16 patents.

A tissue resurfacing system has a handheld surgical instrument with a gas conduit (

38

) which terminates in an exit nozzle (

180

N). Inside the conduit is an inner electrode (

54

). A tubular coaxial outer electrode (

70

) constitutes part of the wall of the conduit. Coupled to the instrument is a radio frequency power generator which delivers high level radio frequency energy in single-shot or repeated bursts to the electrodes (

54, 70

) while gas is flowing through the conduit (

38

) so as to create a gas plasma between the electrodes which then emerges from the nozzle (

180

N) for tissue treatment. A resonant focussing element (

480

) may be located in the conduit (

38

) between the electrodes (

54, 70

) to aid plasma striking. The combination of high peak power (e.g. greater than 750 W) and short treatment pulses (e.g. less than 30 ms) allows rapid surface treatment without significant thermal effects at unwanted depths.

Title
Tissue resurfacing
Application Number
9/789550
Publication Number
6723091 (B2)
Application Date
February 22, 2001
Publication Date
April 20, 2004
Inventor
Francis Amoah
Whitchurch
US
Christopher P Hancock
Roath
US
Keith Penny
Monmouth
US
Colin C O Goble
Penarth
US
Agent
Oliff & Berridge
US
Assignee
Gyrus Medical
US
IPC
A61B 18/18
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