摘要:
Die Erfindung betrifft eine Vorrichtung zur Bestrahlung einer Zielstruktur (7), die sich innerhalb von menschlicher oder tierischer Haut (11) oder Gewebe befindet. Die Bestrahlungsvorrichtung (1) verfügt über wenigstens eine Laserlichtquelle (2) und zumindest ein Lichtlenkmittel (3), die derart ausgeführt sind, dass Laserstrahlung über unterschiedliche Strahlengänge in die Zielstruktur (7) gelangt und aufgrund eines Energieeintrags in die Zielstruktur (7) zumindest bereichsweise eine Eigenschaftsveränderung der Zielstruktur (7) erfolgt. Die beschriebene technische Lösung zeichnet sich dadurch aus, dass eine Steuerung (4) vorgesehen ist, so dass die Eigenschaftsveränderung gezielt in einem Bereich (8) mit räumlicher Ausdehnung realisierbar ist.
摘要:
Minimally invasive methods and devices for endoluminally treating female fallopian tubes or male vas deferens of mammals are presented as a permanent method of contraception. In preferred embodiments, medical devices for male and female sterilization comprise laser radiation source operating at one or more preselected wavelengths between about 980nm and about 1950nm, preferably at least one of 980nm, 1470nm and 1950nm; treatment waveguide with a radial or cylindrical radiation emitting tip; viewing scope; and a temperature sensor. In another preferred embodiment, a minimally-invasive permanent contraception method for males and females comprises the steps of introducing at least one treatment waveguide in a body cavity; positioning the treatment waveguide inside a body cavity; irradiating; and repeating the procedure in companion body cavity to inhibit fertilization. In another embodiment, fluids are infused and/or extracted after, before or during the procedure to enhance laser energy absorption and enhance efficiency of laser treatment.
摘要:
Devices for visually confirming the positioning of a distal end portion of an illuminating device placed within a patient, include inserting a distal end portion of an illuminating device internally into a patient, emitting light from the distal end portion of the illuminating device, observing transillumination resulting from the distal end portion of the illuminating device that occurs on an external surface of the patient, and correlating the location of the observed transillumination on the external surface of the patient with an internal location of the patient that underlies the location of observed transillumination, to confirm position of the distal end portion of the illuminating device.
摘要:
A light emitting device, comprises: an excitation light source that emits excitation light; a wavelength conversion member that absorbs the excitation light emitted from the excitation light source, converts its wavelength, and releases light of a predetermined wavelength band; a light guide in which the center part (core) of its cross section has a refractive index that is higher than the refractive index of the peripheral portion (cladding), and which guides the light emitted from the wavelength conversion member to the outside; and wherein the wavelength conversion member is produced by laminating a plurality of layers that wavelength-convert different wavelengths of light.
摘要:
This invention is methods, apparatus, and systems for enlarging interstitial penetration tracts which have been formed between blood vessels or elsewhere within the body of a mammalian patient. Included are de-bulking type tract enlarging systems (10, 10a), dilation-type tract enlarging systems (10b), tissue-sclicing-type tract enlarging systems (10c), and two-catheter-type tract enlarging systems (17).
摘要:
The laser light irradiating apparatus of the present invention is adapted to irradiate the surface of the living body tissue, such as the blotch of the skin or the inside of the tissue with laser light from laser light supplying means. The apparatus comprises laser light transmitting member having a rear end to which the laser light from said laser light supplying means is incident and a front end from which the laser light is emitted; holding means for holding said laser light transmitting member; turning means for moving the front end portion of the laser light transmitting member having at least its front end substantially along a turning locus around a turning center axis within said holding means; and a reflector cylinder for reflecting laser light on its inner surface which is mounted on said holding means coaxially with said turning center axis and is disposed in front of at least said front end of said laser light transmitting member for reflecting part of the laser light emitted from said front end of said laser light transmitting member on its inner surface so that the reflected light is incident upon said tissue.
摘要:
An articulating instrument including a distal assembly having first and second configurations and intermediate configurations between them. At least one of the first and second configurations is substantially stable such that the distal assembly of the instrument has a tendency to remain in the stable configuration when placed in that configuration by a user of the instrument. Preferably, the distal assembly terminates in a distal tip unit defining at least one distal feature that is useful for manipulating tissue.
摘要:
An apparatus for microdisruption of cataracts in lens tissue by impulsive heat deposition comprising: a source of pulsed laser radiation, a user input device, a control circuit, and an optical waveguide configured to transmit the pulsed laser radiation. The light intensity which exits the optical waveguide has a wavelength selected to match an absorption peak of at least one component of the lens tissue, a pulse duration time shorter than a time required for thermal diffusion out of the laser irradiation volume and shorter than a time required for a thermally driven expansion of the laser irradiated volume, and a pulse energy resulting in a peak intensity of each laser pulse below a threshold for ionization-driven ablation to occur.