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1. WO1996004858 - LASER-ASSISTED ELECTROSURGERY SYSTEM

Publication Number WO/1996/004858
Publication Date 22.02.1996
International Application No. PCT/IB1995/000546
International Filing Date 10.07.1995
Chapter 2 Demand Filed 08.01.1996
IPC
A61B 17/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
A61B 18/14 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04by heating
12by passing a current through the tissue to be heated, e.g. high-frequency current
14Probes or electrodes therefor
A61B 18/24 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
18by applying electromagnetic radiation, e.g. microwaves
20using laser
22the beam being directed along or through a flexible conduit, e.g. an optical fibre; Hand-pieces therefor
24with a catheter
CPC
A61B 18/14
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04by heating
12by passing a current through the tissue to be heated, e.g. high-frequency current
14Probes or electrodes therefor
A61B 18/1402
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04by heating
12by passing a current through the tissue to be heated, e.g. high-frequency current
14Probes or electrodes therefor
1402Probes for open surgery
A61B 18/24
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
18by applying electromagnetic radiation, e.g. microwaves
20using laser
22the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or; hand-pieces therefor
24with a catheter
A61B 2017/00292
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
00234for minimally invasive surgery
00292mounted on or guided by flexible, e.g. catheter-like, means
A61B 2018/00452
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
00315for treatment of particular body parts
00452Skin
A61B 2018/00464
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
00315for treatment of particular body parts
00452Skin
00458Deeper parts of the skin, e.g. treatment of vascular disorders or port wine stains
00464Subcutaneous fat, e.g. liposuction, lipolysis
Applicants
  • VALLEYLAB, INC. [US/US]; 5920 Longbow Drive Boulder, CO 80301, US
Inventors
  • TAYLOR, Kenneth, D.; US
Agents
  • SPIEGEL, Allen, J.; Pfizer Inc. 235 East 42nd Street New York, NY 10017, US
Priority Data
08/289,95812.08.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LASER-ASSISTED ELECTROSURGERY SYSTEM
(FR) aYSTEME D'ELECTROCHIRURGIE ASSISTEE AU LASER
Abstract
(EN)
A laser and electrosurgical system (10) has a handpiece (12) with a proximal and distal end (13) and (14) from which laser radiation (17) and/or electrosurgical energy (18) is selectively or concurrently directed. The ends are along an axis; an electrode extends distally along the axis. Sources of laser and electrosurgical energy (18) are available and controlled. An initiation circuit (25) for the laser selectively delivers it before electrosurgery. Prior delivery to target tissue, the laser creates an ionized conductive pathway for electrosurgery. The combined concurrent application of laser and electrosurgery has a mechanism (27) to selectively distribute energy about the axis. A laser deflecting surface (28) or a beam deflector vibrate relative to the axis. A power switch (30) has levels for laser cut and ionization and/or a delay therebetween for electrosurgical coagulation. A wave guide (34) or an array thereof deliver radiation along the axis. A method has steps of directing selectively and concurrently laser and electrosurgery by aiming the axis, controlling laser and electrosurgical energy (18), delivering laser before electrosurgery, forming an ionized conductive pathway for the electrosurgery, distributing the laser about the axis in a predetermined pattern by deflecting the laser in a predetermined pattern generally along but slightly displaced from the axis to direct electrosurgical energy (18) in a predefined pattern on the patient's (11) target tissue. In another possible approach, there are additional steps of delivering the laser radition (17) as a beam and varying an ionized conductive pathway by refracting or diffracting the laser radiation (17) beam with the mechanism (27) having a beam pattern deflector.
(FR)
Un système laser et électrochirurgical (10) possède une pièce à main (12) comportant une extrémité proximale (13) et une extrémité distale (14), depuis lesquelles le rayonnement laser (17) et/ou l'énergie électrochirurgicale (18) sont dirigés sélectivement ou simultanément. Ces extrémités se trouvent le long d'un axe; une électrode s'étend distalement le long de cet axe. Des sources d'énergie laser et électrochirurgicale (18) sont disponibles et régulées. Un circuit de déclenchement (25) du laser met celui-ci en fonction préalablement à l'électrochirurgie. Avant délivrance au tissu-cible, le laser crée un trajet conducteur ionisé pour l'énergie électrochirurgicale. L'application combinée et simultanée des énergies laser et électrochirurgicale s'effectue au moyen d'un mécanisme (27) permettant de répartir sélectivement l'énergie autour de l'axe. Une surface de déflexion du laser (28) ou un déflecteur de faisceau vibrent par rapport à l'axe. Un commutateur de puissance (30) possède des niveaux de coupe au laser et d'ionisation et/ou un retard intermédiaire permettant de réaliser une coagulation chirurgicale. Un guide d'ondes (34) ou un ensemble de guides d'ondes transmettent le rayonnement le long de l'axe. Un procédé possède des étapes consistant à diriger sélectivement et simultanément les énergies laser et électrochirurgicale par ciblage de l'axe, à réguler les énergies laser et électrochirurgicale (18), à appliquer l'énergie laser avant l'énergie électrochirurgicale, à créer un trajet conducteur ionisé pour l'énergie électrochirurgicale, à répartir le laser autour de l'axe selon une configuration prédéterminée par déflexion dudit laser selon une configuration prédéterminée suivant généralement la longueur de l'axe mais légèrement déplacée par rapport à ce dernier, afin de diriger l'énergie électrochirurgicale (18) de façon prédéterminée sur le tissu ciblé du patient (11). Dans un autre mode de réalisation, le procédé comprend des étapes supplémentaires consistant à appliquer le rayonnement laser (17) en tant que faisceau et à modifier un trajet conducteur ionisé par réfraction ou diffraction du faisceau de rayonnement laser (17) au moyen du mécanisme (27) possédant un déflecteur de configuration de faisceau.
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