DE2809007A1 - Live tissue cutting and coagulating instrument - has two different wavelength laser beams and pilot light(s) passed together through manipulator to emerge coaxially from it - Google Patents

Live tissue cutting and coagulating instrument - has two different wavelength laser beams and pilot light(s) passed together through manipulator to emerge coaxially from it

Info

Publication number
DE2809007A1
DE2809007A1 DE19782809007 DE2809007A DE2809007A1 DE 2809007 A1 DE2809007 A1 DE 2809007A1 DE 19782809007 DE19782809007 DE 19782809007 DE 2809007 A DE2809007 A DE 2809007A DE 2809007 A1 DE2809007 A1 DE 2809007A1
Authority
DE
Germany
Prior art keywords
laser
cutting
coagulating
manipulator
pilot light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE19782809007
Other languages
German (de)
Inventor
Frank Dipl Phys Frank
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Priority to DE19782809007 priority Critical patent/DE2809007A1/en
Publication of DE2809007A1 publication Critical patent/DE2809007A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/10—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/201—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser with beam delivery through a hollow tube, e.g. forming an articulated arm ; Hand-pieces therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B2018/2015—Miscellaneous features
    • A61B2018/2025—Miscellaneous features with a pilot laser
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B2018/2065—Multiwave; Wavelength mixing, e.g. using four or more wavelengths
    • A61B2018/207—Multiwave; Wavelength mixing, e.g. using four or more wavelengths mixing two wavelengths

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Electromagnetism (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Surgery Devices (AREA)

Abstract

The instrument cuts and/or coagulates live tissue using electromagnetic waves directed onto it. The beams from two lasers and one or more pilot light sources are passed together through the manipulator, emerging coaxially from it. The wavelength of one laser is such as to give coagulation, while that of the other has a cutting effect. The wavelength of the pilot light lies in the visible spectrum. The coagulating and cutting wavelengths can lie between 0.4 and 3 microns, and between 8 and 15 microns respectively. The coagulating beam can form a sleeve around the cutting beam.

Description

Einrichtung zum Schneiden und/oder Koagulieren von lebendemDevice for cutting and / or coagulating living

Gewebe.Tissue.

Die Erfindung betrifft eine Einrichtung zum Schneiden und/oder Koagulieren von lebendem Gewebe mit Hilfe elektromagnetischer Wellen, welche über einen Manipulator an das zu schneidende und/oder koagulierende Gewebe geführt werden.The invention relates to a device for cutting and / or coagulating of living tissue with the help of electromagnetic waves, which are transmitted via a manipulator to the tissue to be cut and / or coagulated.

Eine derartige Einrichtung ist beispielsweise aus der US-PS 3 875 945 bekannt, bei welcher die Energie eines Radiofrequenzoszillators über ein Koaxialkabel der Schneidspitze eines Manipulators zugeführt wird. Die Einrichtung erlaubt den Wechsel zwischen drei chirurgischen Arbeitsweisen: Schneiden, Koagulieren und Verschorfen.Such a device is disclosed, for example, in US Pat. No. 3,875 945 known in which the energy of a radio frequency oscillator via a coaxial cable is fed to the cutting tip of a manipulator. The facility allows Alternation between three surgical modes of operation: cutting, coagulating and scabbing.

Eine weitere Einrichtung zum Schneiden und/oder Koagulieren menschlichen Gewebes in der Chirurgie ist aus der DE-AS 25 35 341 bekannt, welche benfalls mit Hilfe eines Hochfrequenzstromes arbeitet. Die durch Verwendung von Hochfrequenzspannung auftretenden Gefahren für den Patienten und den behandelnden Arzt sind hinreichend in dieser DE-AS beschrieben.Another device for cutting and / or coagulating human Tissue in surgery is known from DE-AS 25 35 341, which benfalls with Using a high frequency current works. Made by using high frequency voltage occurring dangers for the patient and the attending physician are sufficient described in this DE-AS.

Es ist Aufgabe der Erfindung, eine Einrichtung zu schaffen, mit welcher nicht nur ein wechselweises, sondern auch ein gleichzeitiges Schneiden und Koagulieren lebenden Gewebes mëglich ist, und bei der auf elektrische Elektroden oder Sonden verzichtet werden kann.It is the object of the invention to provide a device with which not only alternate, but also simultaneous cutting and coagulation living tissue is possible, and when using electrical electrodes or probes can be dispensed with.

Die nach der Erfindung vorgesehene Einrichtung geht von der in der Chirurgie bekannten Verwendung von Laserstrahlen zum Schneiden lebenden Gewebes aus. Die Erfindung geht weiter von der Erkenntnis aus, daß aufgrund des für verschiedene Spektralbereiche unterschiedlichen Absorptionsvermögens des Gewebes, ein Laserlicht mir nur einer Wellenlänge nicht gleich gut zum Schneiden und zum Koagulieren geeignet ist. Es hat sich gezeigt, daß zum Schneiden von Gewebe der Spektralbereich zwischen 8 und 15 /um und zum Koagulieren der Spektralbereich zwischen 0,4 und 3/um besonders geeignet ist. Da beide Spektralbereiche nicht sichtbar sind, ist eine bei chirurgischen Lasergeräten ebenfalls bekannte Pilotlichtquelle vorgesehen (z.B. L.Wolbarsht, Laser Applications in Medicine and Biology, Vol. 2, 1974, Plenum Press, New York), welche den Strahlengang des Laserlichtes anzeigt.The device provided according to the invention is based on that in Known use of laser beams for surgery Cutting living Fabric. The invention is based on the knowledge that due to the different absorption capacities of the tissue for different spectral ranges, a laser light with only one wavelength is not equally good for cutting and for Coagulating is suitable. It has been shown that for cutting tissue of the Spectral range between 8 and 15 / µm and for coagulating the spectral range between 0.4 and 3 µm is particularly suitable. Since both spectral ranges are not visible, a pilot light source, which is also known from surgical laser devices, is provided (e.g., L. Wolbarsht, Laser Applications in Medicine and Biology, Vol. 2, 1974, Plenum Press, New York), which shows the beam path of the laser light.

Durch die nach Anspruch 3 vorgesehene Strahlenführung des koagulierenden und des schneidenden Laserlichtes werden die Wundränder des Schnittes sicher und lückenlos koaguliert. Des weiteren ermöglicht diese Strahlenführung die Verwendung eines einfachen Lochspiegels zur Kopplung der aus beiden Lasergeräten austretenden Strahlen anstelle eines sonst notwendigen dielektrischen Spiegels.Due to the beam guidance of the coagulating, provided according to claim 3 and the cutting laser light, the wound edges of the cut become safe and completely coagulated. Furthermore, this beam guidance enables the use a simple perforated mirror for coupling the emerging from both laser devices Rays instead of an otherwise necessary dielectric mirror.

Bei der nach Anspruch 4 vorgesehenen Einrichtung können mit zwei Pilotlichtquellen die drei unterschiedlichen Arbeitsweisen der Einrichtung - Schneiden, Koagulieren, Schneiden + Koagulieren - angezeigt werden. Beim Betrieb nur eines der Laser leuchtet der auf dem Gewebe entstehende Lichtfleck in der jeweiligen Farbe des zugehörigen Pilotlichtes, beim gleichzeitigen Betrieb beider Laser leichtet der Lichtfleck in der Mischfarbe der beiden Pilotlichter. Die drei Betriebsarten der Einrichtung können somit eindeutig und unmißverständlich angezeigt werden.In the device provided according to claim 4, two pilot light sources can be used the three different working methods of the facility - cutting, coagulating, Cutting + Coagulating - are displayed. When operating only one of the lasers lights up the light spot created on the fabric in the respective color of the associated Pilot light, when both lasers are operated at the same time, the light spot illuminates in the mixed color of the two pilot lights. The three modes of operation of the facility can thus clearly and unmistakably displayed.

Die Erfindung wird im folgenden anhand einer schematischen Darstellung näher erläutert.The invention is illustrated below with the aid of a schematic representation explained in more detail.

Die dargestellte Einrichtung besteht aus einer Lasereinheit 1, an welche ein Manipulator 2 angeschlossen ist. Die Lasereinheit 1 weist zwei Lasersysteme 3 und 4 auf, welche jeweils mit einer Pilotlichtquelle kombiniert sind. Das Lasersystem 3 besteht aus einem Nd-YAG-Laser mit einer Wellenlänge A= 1,06 /um zur Koagulation von Gewebe und einem rotstrahlenden He-Ne-Laser als Pilotlichtquelle. Im Lasersystem 4 sind ein C02-Laser der Wellenlänge A= 10,6 /um zum Schneiden mit einem grünstrahlenden He-Cd-Laser als Pilotlichtquelle kombiniert. Das Licht des Lasersystems 3 wird über einen voll reflektierenden Spiegel 5 und einen dielektrischen Spiegel 6, welcher in den Wellenlängen des C02 und des He-Cd-Lasers durchsichtig ist in den Strahlengang des Lasersystems 4 eingekoppelt. Das Licht der Lasereinheit wird in den als Gelenklichtleiter ausgebildeten Manipulator eingekoppelt und dort über voll reflektierende Spiegel 7 weitergeleitet. Der letzte Spiegel des Gelenklichtleiters ist leicht gekrümmt und dient zur Fokussierung des aus dem Manipulator austretenden Lichtes. über nicht dargestellte Fuß- oder Handschalter können die Lasersysteme 3 und 4 wechselweise oder zusammen betrieben werden.The device shown consists of a laser unit 1, an which a manipulator 2 is connected. The laser unit 1 has two laser systems 3 and 4, which are each combined with a pilot light source. The laser system 3 consists of a Nd-YAG laser with a wavelength A = 1.06 / µm for coagulation of tissue and a red He-Ne laser as a pilot light source. In the laser system 4 are a CO2 laser with a wavelength of A = 10.6 / µm for cutting with a green emitting laser He-Cd laser combined as a pilot light source. The light from the laser system 3 is over a fully reflecting mirror 5 and a dielectric mirror 6, which in the wavelengths of the C02 and the He-Cd laser is transparent in the beam path of the laser system 4 is coupled. The light from the laser unit is used as an articulated light guide trained manipulator coupled and there via fully reflective mirror 7 forwarded. The last mirror of the articulated light guide is slightly curved and serves to focus the light emerging from the manipulator. about not The foot or hand switches shown can be used alternately by the laser systems 3 and 4 or operated together.

L e e r s e i t eL e r s e i t e

Claims (4)

Einrichtung zum Schneiden und/oder Koagulieren von lebendem Gewebe.Device for cutting and / or coagulating living tissue. PATENTANSPRÜCHE Einrichtung zum Schneiden und/oder Koagulieren von leb#ndem Gewebe mit Hilfe elektromagnetischer Wellen, welche über einen Manipulator an das zu schneidende und/oder koagulierende Gewebe geführt werden, g e k e n n -z e i c h n e t durch zwei Laser (3,4) und mindestens eine Pilotlichtquelle, deren Licht gemeinsam durch den Manipulator (2) geleitet wird und aus diesem koaxial austritt, wobei die Wellenlänge eines Lasers (3) vorwiegend zur Koagulation, die des anderen Lasers (4) vorwiegend zum Schneiden des Gewebes geeignet ist und die Wellenlänge des Pilotlichtes im sichtbaren Spektrum liegt. PATENT CLAIMS Device for cutting and / or coagulating living tissue with the help of electromagnetic waves, which are transmitted via a manipulator be guided to the tissue to be cut and / or coagulated, g e k e n n -z e i c h n e t by two lasers (3, 4) and at least one pilot light source, whose Light is passed through the manipulator (2) together and emerges from it coaxially, the wavelength of one laser (3) being used primarily for coagulation, that of the other Laser (4) is mainly suitable for cutting the tissue and the wavelength of the pilot light is in the visible spectrum. 2. Einrichtung nach Anspruch 1, dadurch g e k e n n -z e i c h n e t , daß die Wellenlänge des koagulierenden Laserlichtes im Bereich zwischen 0,4 und 3 /um und die des schneidenden Laserlichtes im Bereich zwischen 8 und 15 liegt.2. Device according to claim 1, characterized in that g e k e n n -z e i c h n e t that the wavelength of the coagulating laser light is in the range between 0.4 and 3 / µm and that of the cutting laser light is in the range between 8 and 15. 3. Einrichtung nach Anspruch 1 oder 2, dadurch g e k e n n -z e i c h n e t , daß das koagulierende Laserlicht mantelförmig um das schneidende Laserlicht verläuft.3. Device according to claim 1 or 2, characterized in that g e k e n n -z e i c h n e t that the coagulating laser light forms a jacket around the cutting laser light runs. 4. Einrichtung nach einem der Ansprüche 1 bis 3, dadurch g e k e n n z e i c h n e t , daß jedem Laser (3,4) eine eigene, den Betrieb des jeweiligen Lasers anzeigende Pilotlichtquelle zugeordnet ist, welche Licht ausdeutlich unterscheidbaren Spektralbereichen ausstrahlen.4. Device according to one of claims 1 to 3, characterized g e k e n It is noted that each laser (3, 4) has its own, the operation of the respective Laser indicating pilot light source is assigned, which light clearly distinguishable Radiate spectral ranges.
DE19782809007 1978-03-02 1978-03-02 Live tissue cutting and coagulating instrument - has two different wavelength laser beams and pilot light(s) passed together through manipulator to emerge coaxially from it Ceased DE2809007A1 (en)

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DE19782809007 DE2809007A1 (en) 1978-03-02 1978-03-02 Live tissue cutting and coagulating instrument - has two different wavelength laser beams and pilot light(s) passed together through manipulator to emerge coaxially from it

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DE19782809007 DE2809007A1 (en) 1978-03-02 1978-03-02 Live tissue cutting and coagulating instrument - has two different wavelength laser beams and pilot light(s) passed together through manipulator to emerge coaxially from it

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3242612A1 (en) * 1981-11-19 1983-05-26 Nippon Infrared Industries Co., Ltd., Tokyo LASER BEAM DEVICE
US4408602A (en) * 1981-01-14 1983-10-11 Asahi Kogaku Kogyo Kabushiki Kaisha Laser knife device
EP0093005A2 (en) * 1982-04-27 1983-11-02 Sumitomo Electric Industries Limited Laser device
US4418689A (en) * 1980-09-22 1983-12-06 Olympus Optical Co., Ltd. Laser device for an endoscope
EP0145770A1 (en) * 1983-06-16 1985-06-26 Geza Jako Laser surgery.
EP0160667A1 (en) * 1983-10-06 1985-11-13 Sonomo Corporation Laser healing method and apparatus
FR2575073A1 (en) * 1984-12-24 1986-06-27 Shibuya Kogyo Co Ltd APPARATUS FOR TREATING ATHLETE FOOT
WO1986003958A1 (en) * 1985-01-12 1986-07-17 Firma Carl Zeiss Laser for the surgery of hard tissue
EP0235453A1 (en) * 1985-12-12 1987-09-09 Baxter Travenol Laboratories, Inc. Surgical laser instrument
EP0238308A2 (en) * 1986-03-17 1987-09-23 Cincinnati Milacron Inc. Laser robot
FR2607329A1 (en) * 1986-11-20 1988-05-27 Tulip John LARGE WAVELENGTH NDYAG LASER AND METHOD FOR PRODUCING LARGE POWER LASER BEAM
EP0305294A1 (en) * 1987-08-26 1989-03-01 Technomed International Adaptable laser apparatus
DE3730563C1 (en) * 1987-09-11 1989-03-30 Aesculap Ag Medical apparatus for cutting or coagulating tissues
US4854320A (en) * 1983-10-06 1989-08-08 Laser Surgery Software, Inc. Laser healing method and apparatus
US4930504A (en) * 1987-11-13 1990-06-05 Diamantopoulos Costas A Device for biostimulation of tissue and method for treatment of tissue
WO1990012545A1 (en) * 1989-04-18 1990-11-01 Derma-Lase Limited Method and apparatus for the removal of tattoos
US5002051A (en) * 1983-10-06 1991-03-26 Lasery Surgery Software, Inc. Method for closing tissue wounds using radiative energy beams
US5066291A (en) * 1990-04-25 1991-11-19 Cincinnati Sub-Zero Products, Inc. Solid-state laser frequency conversion system
US5125922A (en) * 1985-04-25 1992-06-30 Dwyer Richard M Method for laser surgery
US5139494A (en) * 1988-11-10 1992-08-18 Premier Laser Systems, Inc. Multiwavelength medical laser method
US5185758A (en) * 1989-11-28 1993-02-09 Massachusetts Institute Of Technology Multiple-laser pump optical system
US5342350A (en) * 1990-02-16 1994-08-30 Jean Amiel Method of endoscopically treating lithiases with a multichannel probe suitable for draining the treated lithiases
US5375132A (en) * 1993-05-05 1994-12-20 Coherent, Inc. Solid state laser with interleaved output
US5409481A (en) * 1992-05-21 1995-04-25 Laserscope Laser tissue welding control system
DE19653546C1 (en) * 1996-12-20 1998-07-16 Jenoptik Jena Gmbh Lasers with different emission directions
US6595987B1 (en) 1990-09-24 2003-07-22 Plc Medical Systems, Inc. Heart synchronized pulsed laser system

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418689A (en) * 1980-09-22 1983-12-06 Olympus Optical Co., Ltd. Laser device for an endoscope
US4408602A (en) * 1981-01-14 1983-10-11 Asahi Kogaku Kogyo Kabushiki Kaisha Laser knife device
DE3242612C2 (en) * 1981-11-19 1993-12-02 Nippon Infrared Ind Laser beam device
US4573465A (en) * 1981-11-19 1986-03-04 Nippon Infrared Industries Co., Ltd. Laser irradiation apparatus
DE3242612A1 (en) * 1981-11-19 1983-05-26 Nippon Infrared Industries Co., Ltd., Tokyo LASER BEAM DEVICE
EP0093005A3 (en) * 1982-04-27 1986-11-20 Sumitomo Electric Industries Limited Laser device
EP0093005A2 (en) * 1982-04-27 1983-11-02 Sumitomo Electric Industries Limited Laser device
EP0145770A1 (en) * 1983-06-16 1985-06-26 Geza Jako Laser surgery.
EP0145770A4 (en) * 1983-06-16 1987-01-20 Geza Jako Laser surgery.
EP0160667A4 (en) * 1983-10-06 1987-07-22 Sonomo Corp Laser healing method and apparatus.
US4672969A (en) * 1983-10-06 1987-06-16 Sonomo Corporation Laser healing method
US5002051A (en) * 1983-10-06 1991-03-26 Lasery Surgery Software, Inc. Method for closing tissue wounds using radiative energy beams
EP0160667A1 (en) * 1983-10-06 1985-11-13 Sonomo Corporation Laser healing method and apparatus
US4854320A (en) * 1983-10-06 1989-08-08 Laser Surgery Software, Inc. Laser healing method and apparatus
FR2575073A1 (en) * 1984-12-24 1986-06-27 Shibuya Kogyo Co Ltd APPARATUS FOR TREATING ATHLETE FOOT
WO1986003958A1 (en) * 1985-01-12 1986-07-17 Firma Carl Zeiss Laser for the surgery of hard tissue
US5125922A (en) * 1985-04-25 1992-06-30 Dwyer Richard M Method for laser surgery
EP0235453A1 (en) * 1985-12-12 1987-09-09 Baxter Travenol Laboratories, Inc. Surgical laser instrument
EP0238308A2 (en) * 1986-03-17 1987-09-23 Cincinnati Milacron Inc. Laser robot
EP0238308A3 (en) * 1986-03-17 1988-05-18 Cincinnati Milacron Inc. Laser robot
FR2607329A1 (en) * 1986-11-20 1988-05-27 Tulip John LARGE WAVELENGTH NDYAG LASER AND METHOD FOR PRODUCING LARGE POWER LASER BEAM
US5048034A (en) * 1986-11-20 1991-09-10 Carl Zeiss Stiftung Long wavelength NdYAG laser
WO1989002174A1 (en) * 1987-08-26 1989-03-09 Micro-Controle Adaptable laser apparatus
FR2619967A1 (en) * 1987-08-26 1989-03-03 Micro Controle ADAPTABLE LASER APPARATUS
EP0305294A1 (en) * 1987-08-26 1989-03-01 Technomed International Adaptable laser apparatus
US4965807A (en) * 1987-08-26 1990-10-23 Micro-Controle Adaptable laser apparatus
DE3730563C1 (en) * 1987-09-11 1989-03-30 Aesculap Ag Medical apparatus for cutting or coagulating tissues
US4930504A (en) * 1987-11-13 1990-06-05 Diamantopoulos Costas A Device for biostimulation of tissue and method for treatment of tissue
US5304167A (en) * 1988-11-10 1994-04-19 Premier Laser Systems, Inc. Multiwavelength medical laser method
US5139494A (en) * 1988-11-10 1992-08-18 Premier Laser Systems, Inc. Multiwavelength medical laser method
WO1990012545A1 (en) * 1989-04-18 1990-11-01 Derma-Lase Limited Method and apparatus for the removal of tattoos
US5185758A (en) * 1989-11-28 1993-02-09 Massachusetts Institute Of Technology Multiple-laser pump optical system
US5342350A (en) * 1990-02-16 1994-08-30 Jean Amiel Method of endoscopically treating lithiases with a multichannel probe suitable for draining the treated lithiases
US5066291A (en) * 1990-04-25 1991-11-19 Cincinnati Sub-Zero Products, Inc. Solid-state laser frequency conversion system
US6595987B1 (en) 1990-09-24 2003-07-22 Plc Medical Systems, Inc. Heart synchronized pulsed laser system
US5409481A (en) * 1992-05-21 1995-04-25 Laserscope Laser tissue welding control system
US5375132A (en) * 1993-05-05 1994-12-20 Coherent, Inc. Solid state laser with interleaved output
US5781574A (en) * 1993-05-05 1998-07-14 Coherent, Inc. Liquid circulation system for cooling a laser head
US5999555A (en) * 1993-05-05 1999-12-07 Coherent, Inc. Apparatus for combining laser beams
US6115396A (en) * 1993-05-05 2000-09-05 Coherent, Inc. Control system for a laser with multiple solid state rods
DE19653546C1 (en) * 1996-12-20 1998-07-16 Jenoptik Jena Gmbh Lasers with different emission directions

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