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WO2005009267A1 - Dispositif d'application d'un rayonnement electromagnetique a un tissu humain - Google Patents

Dispositif d'application d'un rayonnement electromagnetique a un tissu humain Download PDF

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Publication number
WO2005009267A1
WO2005009267A1 PCT/IB2004/051267 IB2004051267W WO2005009267A1 WO 2005009267 A1 WO2005009267 A1 WO 2005009267A1 IB 2004051267 W IB2004051267 W IB 2004051267W WO 2005009267 A1 WO2005009267 A1 WO 2005009267A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
electromagnetic radiation
radiation
duct
jet
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
PCT/IB2004/051267
Other languages
English (en)
Inventor
Bernardus L. G. Bakker
Robbert A. M. Van Hal
Michiel E. Roersma
Jozef J. M. Janssen
Willem Hoving
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of WO2005009267A1 publication Critical patent/WO2005009267A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
    • 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
    • A61B2018/206—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 the laser light passing along a liquid-filled conduit

Definitions

  • the present invention relates to a device for delivering electromagnetic radiation to human tissue, comprising a treatment head with a duct which is fillable with a liquid, and coupling means for coupling electromagnetic radiation into the duct, wherein the duct ends in an aperture for emitting the electromagnetic radiation in an emission direction.
  • the document US 5,112,328 describes an apparatus for laser surgery.
  • the apparatus comprises a handpiece with a tubular terminal portion with an open distal end, means for introducing a laser beam into the handpiece for focussing said beam to a focus spot.
  • the tubular terminal portion may be filled with a saline solution through which the laser beam is guided, and which saline solution may be made to flow out of the terminal end portion.
  • This known apparatus is designed to perform surgery, i.e. cutting human tissue, by means of a focussed laser beam.
  • the apparatus comprises one or more lenses for focussing the beam, and the apparatus must be positioned at a certain distance from the body part to be treated in order to direct the focussed spot to the intended position.
  • the apparatus in order to obtain a stable position, in most cases the apparatus will engage the body part to be treated.
  • the saline solution is made to flow across the body part to be treated and hence across the focus in order to wash away debris.
  • the known apparatus has the disadvantage that it is very sensitive to correct positioning. When the position is incorrect, either the apparatus does not function because the beam is out of focus, or a wrong part of the tissue is cut with the laser beam. Hence said apparatus needs professional supervision in order to be operated safely.
  • a focussed laser beam is used, only a very small area of tissue may be treated.
  • an object of the present invention is to provide an apparatus of the kind mentioned above which is safer to use and less sensitive to the distance for use.
  • the object is achieved with an apparatus of the kind mentioned in the preamble, which is characterized in that the device further comprises ejection means for ejecting said liquid in a jet from the aperture in the emission direction, wherein the jet guides at least a portion of the electromagnetic radiation via total internal reflection.
  • the apparatus uses the property of a jet of liquid that it will guide radiation via total internal reflection, i.e. at least radiation whose entrance angle lies within a certain range. Since apart from absorption in the liquid, the transport of the radiation within the jet of liquid may continue over an indefinite distance, the device may deliver the radiation at any distance from the aperture. No spacers etc.
  • the radiation is confined to the jet of liquid and will not escape therefrom, which is an inherent safety feature. Obviously, when the jet of liquid hits the surface or tissue to be treated, the liquid will start to swirl across the surface, but the radiation will have entered the tissue and have brought about its effect on the tissue. It is to be noted that in the apparatus of US 5,112,328 the saline solution flows out of the apparatus, but only in a direction perpendicular to the direction of the laser beam. To that end, separate channels are provided. Another important aspect of the jet of liquid is that the liquid may be used to cool the tissue that is being treated in order to prevent burns or other injuries. The liquid acts as a coolant, without any other means being necessary for cooling, such as cooled optical windows, separate sprays or gels, etc.
  • a preferred embodiment of the device according to the invention comprises a plurality of apertures. It goes without saying that in this embodiment the device is adapted to emit radiation through the plurality of apertures, in each case through ejection of a jet of liquid through said apertures. To this end each of the plurality of apertures may be formed in separate ducts, or the plurality of apertures may be formed in parallel in one duct. The same holds for the coupling means and ejection means, which may be formed as separate means for every aperture, or may be combined into a single coupling means or ejection means.
  • the liquid comprises water. This is not only a very simple solution, but it also has an inherent safety feature since water is completely harmless to the human body as to toxicity etc.
  • the device comprises liquid conditioning means.
  • the liquid conditioning means may be cooling means or heating means to bring the liquid to a desired temperature, such as a low temperature of between 0 and 10 °C.
  • the liquid conditioning means may comprise a heater, a heat exchanger, a Peltier element, a block of ice and so forth.
  • the device further comprises connection means for connecting an external source of liquid to the duct.
  • connection means are meant for connecting the duct to a water pipe or e.g. a water hose. This offers the possibility to connect the device to the mains water supply of a house or hospital, etc. Any other external source of liquid may also be used, such as an oil, etc. with an appropriate refractive index.
  • the device further comprises drainage means for draining off ejected liquid through a drainage opening near the aperture.
  • the drainage means will comprise some kind of tubing with a drainage opening and pump means for pumping away drained liquid.
  • the pump means may be provided separately, but in many cases it will be preferable for the ejection means and pump means to be combined into a single pump means.
  • the advantage of providing drainage means is that ejected liquid can be drained off in order to avoid problems with too large a quantity of liquid. Furthermore, any dirt, debris, etc. that is washed away with the ejected liquid will automatically be disposed of together with the liquid.
  • the drainage opening surrounds the aperture. In this case it is possible to effectively drain off all of the ejected liquid.
  • the type of electromagnetic radiation is not subject to limitations. However, depending on the properties of the liquid used, it is advantageous for the electromagnetic radiation to have a wavelength between 300 and 1500 nanometer. These types of electromagnetic radiation may be used safely by non-professional users.
  • the wavelength is between 380 and 1500 nanometer.
  • the electromagnetic radiation is non-coherent radiation (i.e in particular no laser radiation). This offers not only an inherent safety feature, because after having left the liquid non-coherent radiation will quickly decrease in intensity upon hitting a surface, except for very specific cases of near point sources and converging optics. Also, in the case of e.g. malfunction of the device, caused by no ejection of liquid, the emitted radiation will not have a dangerous intensity, except at the shortest distances.
  • a power density of the electromagnetic radiation in a cross-section of the jet of liquid is less than 10 kW/cm2, more preferably less than 1 kW/cm2.
  • the electromagnetic radiation is continuous radiation, and a power density of the electromagnetic radiation in a cross -section of the jet of liquid is between 1 kW/cm2 and 150 W/cm2. At such a low power density the safety of a device is ensured even better.
  • a treatment may comprise the application of the device, switching on the device and, after a certain amount of the radiation, switching off the device. This may be considered a single (long) pulse. It is also possible to move the device over the skin etc. at a certain speed, with continuous emission of radiation. By selecting the right speed, depending on the intensity of the emitted radiation, the right amount of radiation that will hit a certain area may be set. In this respect the notion of 'dwell time' is to be mentioned, which is equal to the time during which a point on the skin receives radiation.
  • the device according to the invention further comprises a source of the electromagnetic radiation.
  • a source of the electromagnetic radiation This not only offers the advantage of a possible compact design of the device, but it also diminishes the risk of radiation being emitted unintendedly, e.g. not via the jet of liquid.
  • providing a separate source of electromagnetic radiation may be advantageous if said source is rather bulky. In that case it is preferable to separate the source from the device and use e.g. optical fibers as coupling means for the electromagnetic radiation.
  • the device itself, in particular that part of the device that will emit radiation and eject liquid, will then be much easier to use.
  • this source is preferably a flash lamp or a laser.
  • the former is a very convenient source for broad band optical radiation, which may be made very small and yet have a high peak power.
  • the latter is a very well defined monochromatic light source, with even higher peak power, which is very controllable.
  • a laser may be embodied as a cw laser or a pulsed laser.
  • a pulsed laser has the advantage that the action on the skin may be controlled and checked after each pulse or after a number of pulses.
  • the source is coolable by the liquid, for example because the liquid can be made to flow along the source or a reflector combined with the source. In this way, the liquid will carry off part of the heat of a reflector (if present) or of the heat generated PH-ML030917 PCT/IB2004/051267 6 by the source. This may also serve as a filter means for unwanted parts of the spectrum of the radiation emitted by the source, e.g. infrared radiation above ⁇ 1200 n-m in the case of water.
  • the device further comprises control means disabling emission of electromagnetic radiation during a predetermined period of time after the start of the ejection of the jet of liquid.
  • This embodiment offers a safety feature, in that the device will not emit radiation until after a certain predetermined period of time after the start of the ejection of liquid.
  • the device will not emit radiation until after a certain predetermined period of time after the start of the ejection of liquid.
  • a second path for the electromagnetic radiation is present in the treatment head, which second path is not connected to the aperture and is of such design that, when the duct is not filled with liquid, the electromagnetic radiation will travel along said second path.
  • This is also a safety feature which prevents emission of radiation in the absence of liquid.
  • the radiation may be directed to the second path not connected to the aperture.
  • the coupling means are such that they will guide radiation towards the ejection opening only in the presence of liquid. This may be easily realized through simple laws of optics, e.g.
  • the electromagnetic radiation and/or source therefor preferably is laser radiation/a laser.
  • Fig. 1 is a schematic representation of a basic embodiment of a device according to the invention
  • Fig. 2 shows a detail of a second embodiment of a device according to the invention
  • FIG. 3a and 3b show two examples of methods for coupling electromagnetic radiation from a source into a duct of a device according to the invention
  • Fig. 4 shows a detail of a device according to the invention
  • Fig. 5 schematically shows a safety feature for a device according to the invention.
  • Fig. 1 is a schematic representation of a basic embodiment of a device according to the invention.
  • 1 is a source of electromechanic radiation in a housing 2.
  • a beam 3 of electromagnetic radiation is emitted and, via an optical window 4, coupled into a duct 5.
  • the duct 5 is filled with a liquid 6 which is fed through a feeding tube 7.
  • a pump 8 pumps the liquid 6 which is taken in from a water mains connection 9.
  • Reference numeral 10 denotes control means for controlling pump means 8 via first connector 11, and for controlling the source 1 via second connector 12.
  • the liquid 6 is ejected through a nozzle 13 as a jet 14 towards a surface 15 to be treated.
  • the source 1 of electromagnetic radiation is for example a laser, a halogen incandescent lamp, a gas discharge lamp, one or more LED s etc.
  • the source 1 may emit continuous electromagnetic radiation, but may also be operated intermittently.
  • source 1 may be a flash lamp.
  • the housing 2 may be any appropriate housing for the source 1.
  • the housing 2 comprises a reflector or other means for forming a bundle of radiation.
  • the beam 3 of electromagnetic radiation which is emitted by the source 1 travels through the housing 2 and through an optical window 4.
  • the optical window 4 may be a piece of material which is transparent to the beam of electromagnetic radiation, or at least to a part thereof. In the latter case, the optical window 4 may comprise filter means for filtering out a desired portion of electromagnetic radiation.
  • optical window 4 may comprise a band pass filter which is transparent to radiation between e.g. 400 and 800 nanometer only.
  • Optical window 4 also referred to as coupling means, may also comprise a simple convex lens which may serve as a condensor in order to obtain a more favorable beam 3.
  • Optical window 4 may furthermore comprise shutter means (not shown) which may block the beam 3 if desired.
  • the duct 5 which is filled with liquid 6 may be a simple box, preferably having a shape which is convenient for manual operation of the device as a treatment head.
  • the duct 5 is connected to feeding tube 7 for receiving the liquid 6.
  • the liquid 6 leaves the duct 5 through a nozzle 13 opposite the optical window 4.
  • the duct 5 may be made from a material which is transparent to the electromagnetic radiation, but preferably it is made of an opaque material.
  • the duct 5 may be coated on the inside with a reflective material, e.g. like a mirror, in order to guide as much electromagnetic radiation as possible towards the nozzle 13, which serves as the aperture of the device.
  • the duct 5 is made of a material with a refractive index which is lower than that of the liquid. In the case of the liquid 6 being water, this is very difficult to achieve, but in the case of the liquid 6 being some kind of oil or the like, many kinds of plastics will satisfy this requirement.
  • the duct 5 as a whole will guide the electromagnetic radiation by means of total internal reflection, and in any case the efficacy will be higher than in the case that the refractive index of the material of the duct 5 is higher than that of the liquid 6.
  • the pump means 8 serve to pressurize the liquid 6 in order to eject the liquid 6 from the duct 5.
  • the pump 8 may be omitted.
  • the pump may be replaced by some kind of valve or other closing means, which may be controlled by the control means 10.
  • Control means 10 serve to control pump 8.
  • first connector 11 which may be e.g. any kind of cable permitting data traffic or for example a simple power supply cable to the pump 8, which power supply may be switched by control means 10.
  • Control means 10 may also be connected to source 1 by means of a second connector 12. Again, this may be any kind of cable permitting data traffic or a simple power supply cable.
  • control means 10, as well as the first 11 and second connector 12 are optional, although a simple on/off switch may be regarded as a minimum control means.
  • Control means 10 may be used to switch on and off source 1, either in a continuous or pulsed mode.
  • control means 10 may comprise a computer that may also be used to enter specific data of the object under treatment.
  • the device according to the invention will be used to treat human body parts, notably skin and the surface of teeth.
  • Some uses of the device according to the invention are in the field of photo hair removal by administering light to hair follicles etc., skin-photo rejuvenation and dental care by removing plaque.
  • Many other possible uses may be contemplated.
  • the spectrum of the electromagnetic radiation in the jet of liquid 6 may be optimized for the specific use.
  • the source of electromagnetic radiation may be a diode laser (e.g. 808 nanometer, pulse duration 10-100 ms, optical intensity 5-50 J/cm 2 ), or a flash lamp system (550-1100 nm broad band spectrum, pulse duration 10-100 ms, optical intensity 5-50 J/cm 2 ).
  • Fig. 2 shows a detail of a second embodiment of a device according to the invention. The detail shows the lower part of the duct 5 with a nozzle 13 ejecting a jet 14 of liquid 6. The nozzle 13 is surrounded by a sleeve (or collar) 17.
  • the jet 14 there are shown two rays of radiation, 16a and 16b.
  • the internal surface of the duct 5 has a reflective coating. This coating ensures that the rays 16a and 16b inside the duct will be reflected off the wall of the duct 5.
  • ray 16a travels at such an angle with respect to the surface of jet 14 that it will not be totally reflected; instead it refracted and leave the jet 14.
  • the maximum angle between the ray and the normal to the surface of the jet 14 at which total internal reflection still takes place depends on the refractive index.
  • the other ray 16b travels at an appropriate angle and will be reflected totally, as shown in the figure.
  • an absorptive sleeve 17 is present around and at a certain distance from the nozzle 13. The dimensions of the sleeve 17 will have to fulfil minimum requirements, which may be determined in a very simple way. Figs.
  • FIG. 3a and 3b show two examples of methods for coupling electromagnetic radiation from a source into a duct in a device according to the invention.
  • Fig. 3 a shows a duct 5 with liquid 6 into which a beam 3 is coupled in through an optical window 4 after having gone through a lens 18 and a shutter 19.
  • the beam 3 of radiation may originate from any source and may be redirected by means of a positive, converging lens 18.
  • Lens 18 may also symbolize a beam expander in the case of a laser beam.
  • Shutter 19 may be used, i.e. closed, in order to shut off the beam 3 when it is no longer needed or e.g. when it would be dangerous to emit radiation.
  • Shutter 19 may also be used to produce a pulsed beam from a continuous source.
  • shutter 19 may also symbolize some kind of diaphragm in order to adjust the total amount of energy in the beam.
  • liquid 6 flows around source 1 and through duct 5.
  • Reference numeral 4 is an optical window and 20 denotes an optical fiber.
  • the liquid is made to flow around source 1 in order to cool the source or e.g. filter the radiation emitted by the source. In this respect use may be made of the property of e.g. water that it filters out medium and longer wave infrared radiation, which may be advantageous to prevent overheating of the skin.
  • heater means or cooler means may be provided (not shown) to further bring the liquid to a desired temperature.
  • the cooler means may be for instance a block of ice or a heat exchanger.
  • the optical window 4 may e.g. be a piece of glass or other transparent material or a lens etc.
  • the optical window 4 is used to couple the radiation from source 1 into the optical fiber 20.
  • the optical fiber 20 may be made of an appropriate plastic, e.g. PMMA or of glass or quartz.
  • the optical fiber 20 enters the duct 5, still carrying the electromagnetic radiation inside it. Said radiation is emitted as a beam 3 at an end of the fiber 20 opposite the optical window 4.
  • the embodiment according to Fig. 3b is an example in which the liquid supply and the electromagnetic radiation "supply" are more or less decoupled. It is not necessary that the duct 5 with liquid 6 passes the source 1. If the source 1 and the duct 5 are separate it is possible for the source 1 to be rather heavy, bulky etc. without the treatment head, i.e. the part of the device held in the hand of the operating person and comprising the end of the duct with the nozzle, being less convenient. More generally, the treatment head may comprise a connection to a base station (also referred to as an
  • Fig. 4 shows a detail of a device according to the invention, in which 5 denotes the duct with the nozzle 13, which is surrounded by an outer duct 21. The whole is positioned on a skin surface 15. The liquid flows through the duct 5, out of the nozzle 13 and into the outer duct 21, as indicated by the arrows.
  • the liquid can be made to flow into the outer duct 21 by means of suction means (not shown) which drain the liquid into the outer duct 21.
  • suction means (not shown) which drain the liquid into the outer duct 21.
  • This drainage ensures that the ejected liquid will not cause any problems. Furthennore, this controlled flow of liquid will help remove any debris, dirt etc. from the surface being treated. In this case, the skin surface 15 could be cleansed by the flow of liquid in order to remove cut hair, small flakes of skin, bacteria etc.
  • the drainage means or suction means may be separate, but may also be combined with the pump means.
  • One part of the pump means may pump liquid towards the nozzle, while another part of the pump means may drain liquid through the outer tube 21.
  • Outer tube 21 may also be a separate tube not surrounding duct 5, but merely extending parallel to it. Fig.
  • 5 schematically shows a safety feature for a device according to the invention.
  • 5 denotes (a part of) the duct through which liquid is guided.
  • Reference numeral 3 is a laser beam.
  • Reference numeral 22 is a block of optical material with an outer surface 23.
  • Reference numeral 24a is a resultant laser beam in the presence of liquid, while
  • the 24b denotes a resultant laser beam in the absence of liquid.
  • the laser beam 3 is made to enter the block 22 perpendicularly so it will not be refracted at the boundary between air and the optical material.
  • the duct 5, which may also be a separate fluid duct, will be filled with a liquid when the device is operative.
  • the block of optical material 22 and the liquid may be selected such that there refractive indices do not differ very much, although the main criterion will be that the refractive index of the liquid is substantially higher than that of air, which is always the case.
  • the refractive index of the liquid is only very slightly lower than that of the optical material of the block 22. This means that when the laser beam 3 crosses the duct 5 with the liquid at an oblique angle, the beam will not be shifted very much. This is clearly shown in that the resultant beam 24a almost coincides with the original laser beam 3.

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

Abstract

L'invention concerne un dispositif d'application d'un rayonnement électromagnétique (3) à un tissu humain. Le dispositif comprend une tête d'application avec un conduit (5) qui peut être rempli d'un liquide (6). Le rayonnement est couplé au liquide. Le liquide est éjecté à travers un ajutage (13) sous forme d'un jet (14) et guide le rayonnement par réflexion interne totale. Le dispositif permet de guider avec plus de sécurité le rayonnement vers la peau, etc., et permet en outre d'obtenir une profondeur de champ, c'est-à-dire une distance efficace d'application, beaucoup plus grande.
PCT/IB2004/051267 2003-07-29 2004-07-21 Dispositif d'application d'un rayonnement electromagnetique a un tissu humain Ceased WO2005009267A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03102330.2 2003-07-29
EP03102330 2003-07-29

Publications (1)

Publication Number Publication Date
WO2005009267A1 true WO2005009267A1 (fr) 2005-02-03

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1905529A4 (fr) * 2005-07-21 2009-05-20 Shibuya Kogyo Co Ltd Dispositif de traitement laser hybride
WO2011032551A3 (fr) * 2009-09-18 2011-05-26 Lumera Laser Gmbh Unité d'orientation de faisceau laser et appareil de traitement laser destiné au traitement d'une matière
CN102653033A (zh) * 2012-05-08 2012-09-05 袁芳革 一种水射流与光纤激光直接耦合装置
US20230084701A1 (en) * 2013-02-07 2023-03-16 Rocomp Global, Llc Electromagnetic radiation targeting devices, assemblies, systems and methods

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988004592A1 (fr) * 1986-12-18 1988-06-30 Aesculap-Werke Ag Procede et dispositif de decoupage de matieres au laser
US5112328A (en) * 1988-01-25 1992-05-12 Refractive Laser Research & Development Program, Ltd. Method and apparatus for laser surgery
WO1995013759A1 (fr) * 1993-11-19 1995-05-26 Peter Rechmann Piece a main et procede de rinçage du point de fonctionnement d'un faisceau laser sortant d'une fibre optique
WO1995032834A1 (fr) * 1994-05-30 1995-12-07 Bernold Richerzhagen Dispositif pour l'usinage d'un materiau au laser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988004592A1 (fr) * 1986-12-18 1988-06-30 Aesculap-Werke Ag Procede et dispositif de decoupage de matieres au laser
US5112328A (en) * 1988-01-25 1992-05-12 Refractive Laser Research & Development Program, Ltd. Method and apparatus for laser surgery
WO1995013759A1 (fr) * 1993-11-19 1995-05-26 Peter Rechmann Piece a main et procede de rinçage du point de fonctionnement d'un faisceau laser sortant d'une fibre optique
WO1995032834A1 (fr) * 1994-05-30 1995-12-07 Bernold Richerzhagen Dispositif pour l'usinage d'un materiau au laser

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1905529A4 (fr) * 2005-07-21 2009-05-20 Shibuya Kogyo Co Ltd Dispositif de traitement laser hybride
WO2011032551A3 (fr) * 2009-09-18 2011-05-26 Lumera Laser Gmbh Unité d'orientation de faisceau laser et appareil de traitement laser destiné au traitement d'une matière
CN102653033A (zh) * 2012-05-08 2012-09-05 袁芳革 一种水射流与光纤激光直接耦合装置
US20230084701A1 (en) * 2013-02-07 2023-03-16 Rocomp Global, Llc Electromagnetic radiation targeting devices, assemblies, systems and methods

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