15794results about "Light therapy" patented technology

A resection device includes an elongated probe shaft and a tissue resection member disposed at a distal end of the elongated probe shaft. The tissue resection member has a cutting surface configured for being placed in contact with tissue. In one aspect of the invention, at least one ejection port is located adjacent to the cutting surface of the tissue resection member, wherein the at least one ejection port is coupled to a source of a polymerizable hemostasis-promoting material that is delivered to the resection site of interest. In certain embodiments, polymerization of the hemostasis-promoting material may be accelerated by application of heat, radiofrequency energy, or ultra violet light.

A catheter introduction apparatus provides an optical assembly for emission of laser light energy. In one application, the catheter and the optical assembly are introduced percutaneously, and transseptally advanced to the ostium of a pulmonary vein. An anchoring balloon is expanded to position a mirror near the ostium of the pulmonary vein, such that light energy is reflected and directed circumferentially around the ostium of the pulmonary vein when a laser light source is energized. A circumferential ablation lesion is thereby produced, which effectively blocks electrical propagation between the pulmonary vein and the left atrium.

An integrated endoscopic image acquisition and therapeutic delivery system for use in minimally invasive medical procedures (MIMPs). The system uses directed and scanned optical illumination provided by a scanning optical fiber or light waveguide that is driven by a piezoelectric or other electromechanical actuator included at a distal end of an integrated imaging and diagnostic/therapeutic instrument. The directed illumination provides high resolution imaging, at a wide field of view (FOV), and in full color that matches or excels the images produced by conventional flexible endoscopes. When using scanned optical illumination, the size and number of the photon detectors do not limit the resolution and number of pixels of the resulting image. Additional features include enhancement of topographical features, stereoscopic viewing, and accurate measurement of feature sizes of a region of interest in a patient's body that facilitate providing diagnosis, monitoring, and/or therapy with the instrument.

Systems and methods for prophylactic measures aimed at improving wound repair. In some embodiments, laser-mediated preconditioning would enhance surgical wound healing that was correlated with hsp70 expression. Using a pulsed laser (λ=1850 nm, Tp=2 ms, 50 Hz, H=7.64 mJ/cm²) the skin of transgenic mice that contain an hsp70 promoter-driven luciferase were preconditioned 12 hours before surgical incisions were made. Laser protocols were optimized using temperature, blood flow, and hsp70-mediated bioluminescence measurements as benchmarks. Bioluminescent imaging studies in vivo indicated that an optimized laser protocol increased hsp70 expression by 15-fold. Under these conditions, healed areas from incisions that were laser-preconditioned were two times stronger than those from control wounds. Our data suggest that these methods can provide effective and improved tissue-preconditioning protocols and that mild laser-induced heat shock that correlated with an expression of Hsp70 may be a useful therapeutic intervention prior to or after surgery.

High-brightness LEDs, combined with a processor for control, can produce a variety of pleasing effects for display and illumination. A system disclosed herein uses high-brightness, processor-controlled LEDs in combination with diffuse materials to produce color-changing effects. The systems described herein may be usefully employed to bring autonomous color-changing ability and effects to a variety of consumer products and other household items. The system may also include sensors so that the illumination of the LEDs might change in response to environmental conditions or a user input. Additionally, the system may include an interface to a network, so that the illumination of the LEDs may be controlled via the network.

A method and apparatus are provided for performing a therapeutic treatment on a patient's skin by concentrating applied radiation of at least one selected wavelength at a plurality of selected, three-dimensionally located, treatment portions, which treatment portions are within non-treatment portions. The ratio of treatment portions to the total volume may vary from 0.1% to 90%, but is preferably less than 50%. Various techniques, including wavelength, may be utilized to control the depth to which radiation is concentrated and suitable optical systems may be provided to concentrate applied radiation in parallel or in series for selected combinations of one or more treatment portions.

A device is described that can be used by surgeons to provide quick and accurate face-lifting maneuvers that minimize the amount of tissue that has to be removed. The device is comprised of a shaft with a relatively planar but possibly lenticulate and even slightly curved tip that can divide and energize various tissue planes causing contraction especially via the fibrous tissues. Various forms of energy can be delivered down the shaft to heat and cause desirable tissue contraction. The device can also include a temperature sensor that can be used to control power output.

Methods and systems are provided for illuminating various materials using an LED system. These methods and systems can be applied to a plurality of materials, including biological entities, and may be employed to effect one or more changes in the illuminated material. Exemplary systems may be particularly configured and suitable for use in medical applications, including diagnostic and therapeutic interventions.

A modified vacuum assisted wound closure system adapted for concurrent applications of phototherapy having a foam pad for insertion substantially into the wound site and a wound drape for sealing enclosure of the foam pad at the wound site. The foam pad includes an optical pigtail, whereby desired wavelength of light may be directed into and about the wound site. The foam pad is placed in fluid communication with a vacuum source for promotion of fluid drainage. The foam pad is made of a highly reticulated, open-cell polyurethane or polyether foam for good permeability of wound fluids while under suction and is also embedded with an optical pigtail. The optical pigtail comprises an optical fiber that has been formed to fan into a plurality of sections. The fibers of the most distal fanned sections, which are implanted in the foam pad at its base, are provided with tiny optical slots, oriented away from the foam pad and toward the wound site. Each optical slot is made by stripping the cladding from the optical fiber in the desired areas of the fanned sections to form slot radiators. Because it is necessary to trim the foam pad in preparation for therapy, the optical fibers comprise plastics, such as acrylic or styrene. Upon placement of the pad, having the optical pigtail embedded therein, the wound drape is firmly adhered about the VAC therapy suction hose as well as the extending optical fiber to prevent vacuum leakage.

Vehicle lighting methods and apparatus, in which an LED-based light source is configured to generate at least visible radiation associated with a vehicle. The light source is controlled such that the generated visible radiation has a variable color over a range of colors including at least three different perceivable colors. Examples of vehicles in which such methods and apparatus may be used include, but are not limited to, an automobile, airplane, boat, non-motorized vehicle, etc. The LED-based light source may be disposed inside the vehicle (e.g., dashboard, instrument panel) or outside the vehicle (e.g., brake lights, undercarriage lighting), and may be controlled to generate white light as one of the perceivable colors. A user interface may be employed to facilitate an adjustment of the variable color of the generated visible radiation. Additionally, information relating to at least one condition associated with the vehicle may be employed to control the LED-based light source such that the variable color of the generated visible radiation is based at least in part on the condition associated with the vehicle.

A photo-therapy device emits photo-therapeutic radiation to treat. living tissue. The device incorporates an array of emitters, the photo emissions of which is dependent on their temperature. Temperature feedback is provided to a voltage supply that supplies current to the emitters, to regulate the voltage supply level and the temperature of the emitters. Additionally, the wavelength of the radiation is dependent on the temperature of the emitters, so the wavelength is moved closer to an optimum wavelength for absorption by the tissue by controlling the temperature of the emitters. Furthermore, the useful life of the emitters is extended by pulsing the emitters on and off by sequentially applying an activation signal to one group of emitters at a time. Also, the device can operate on a wide range of voltage input levels since it utilizes a switching regulator, which can convert a voltage level in the range to the level required to drive the array of emitters. The photo-therapeutic infrared light may be used to treat insect bites and to relieve headaches in human beings. The infrared light emitters may be incorporated into a mouthpiece for treating gum tissues.