1130results about How to "Avoid heat damage" patented technology

Devices and methods for RF heating of food, using techniques which allow uniformity and/or controlled non-uniformity.

Restenosis or neointimal formation may occur following angioplasty or other trauma to an artery such as by-pass surgery. This presents a major clinical problem which narrows the artery. The invention provides a device and a method whereby vascular cells in the area of the artery subjected to the trauma are subjected to irreversible electroporation which is a non-thermal, non-pharmaceutical method of applying electrical pulses to the cells so that substantially all of the cells in the area are ablated while leaving the structure of the vessel in place and substantially unharmed due to the non-thermal nature of the procedure.

Devices and methods for RF heating of food, using techniques which allow uniformity and/or controlled non-uniformity.

A substrate processing system includes a thermal processor or a plasma generator adjacent to a processing chamber. A first processing gas enters the thermal processor or plasma generator. The first processing gas then flows directly through a showerhead into the processing chamber. A second processing gas flows through a second flow path through the showerhead. The first and second processing gases are mixed below the showerhead and a layer of material is deposited on a substrate under the showerhead.

Devices and methods for RF heating of food, using techniques which allow uniformity and/or controlled non-uniformity.

An ultrasonic surgical cutting method and apparatus is provided wherein the method and apparatus allows for the cutting of bone from within a hollow pathway such that a cutter associated with the ultrasonic method and apparatus remains sufficiently cool to prevent necrosis of the bone being cut. Furthermore the ultrasonic device and method can be employed in the cutting of soft tissue, wherein a cooled cutter is used to prevent the sticking of soft tissue to the cutting blade of the device during use.

A method and apparatus are provided for dermatological treatment by focusing ultrasound energy in a volume of tissue below the dermis to obtain selective heating and thermal damage of certain portions of the volume while sparing other portions of the treatment volume from thermal damage. Selective heating of fibrous septae can be achieved while relatively sparing surrounding fatty tissue, which can lead to some shrinkage of the fibrous septae and reduction in the appearance of wrinkles. The matrix of hair follicles can also be selectively heated to provide relatively safe temporary or permanent hair removal. The superficial musculoaponeurotic system can also be selectively heated to obtain a tightening of the overlying skin.

A process for fabricating a semiconductor device comprising the step of, after patterning the silicon film crystallized to a low degree by thermally annealing an amorphous silicon film into an island by etching, irradiating an intense light of a visible light or a near infrared radiation to effect a short-period annealing (RTA) to the silicon film of low crystallinity. Thus, the crystallinity of the silicon film is improved and the silicon film is densified in a short-period.

The present application discloses devices that ablate human tissue. The device comprises a catheter with a shaft through which an ablative agent can travel, a liquid reservoir and a heating component, which may comprise a length of coiled tubing contained within a heating element, wherein activation of said heating element causes said coiled tubing to increase from a first temperature to a second temperature and wherein the increase causes a conversion of liquid within the coiled tubing to vapor, a reusable cord connecting the outlet of the reservoir to the inlet of the heating component, and a single use cord connecting a pressure-resistant inlet port of a vapor based ablation device to the outlet of the heating component.

A blood vessel occlusion system and method includes a handheld probe including a power source, the probe being adapted to transmit energy from the power source through a body surface and into a target blood vessel, for example a varicose vein. Further included is a manual or automatic switch mechanism adapted to enable and disable the power source in response to a predetermined level of compression applied, by means of the probe against the target blood vessel. When the blood vessel is compressed sufficiently to collapse and substantially slow or substantially prevent a flow of blood therethrough, the power source is activated and the vessel is cauterized, leaving the blood vessel in a condition that is resistant to recanalization.

Consistent with the present invention, tissue adhesive compositions and an associated laser exposure system are provided for bonding or sealing biological tissues. The compositions are comprised of chemically derivatized soluble collagen which is formulated to concentrations ranging from 300 mg/ml (30%) to 800 mg/ml (80%) collagen protein. In particular, Type I collagen, for example, is first prepared by extraction from bovine or porcine hide and purified. The collagen preparations are then chemically derivatized with sulfhydryl reagents to improve cohesive strength and with secondary derivatizing agents, such as carboxyl groups, to improve the adhesive strength of the solder to the tissue. The compositions are then formed into viscous solutions, gels or solid films, which when exposed to energy generated from an infrared laser, for example, undergo thermally induced phase transitions. Solid or semi-solid protein compositions become less viscous enabling the high concentration protein to penetrate the interstices of treated biological tissue or to fill voids in tissue. As thermal energy is released into the surrounding environment, the protein compositions again become solid or semi-solid, adhering to the treated tissue or tissue space.

Systems and methods are provided for modeling and for providing a graphical representation of tissue heating and electric field distributions for medical treatment devices that apply electrical treatment energy through one or a plurality of electrodes. In embodiments, methods comprise: providing one or more parameters of a treatment protocol for delivering one or more electrical pulses to tissue through a plurality of electrodes; modeling electric and heat distribution in the tissue based on the parameters; and displaying a graphical representation of the modeled electric and heat distribution. In another embodiment, a treatment planning module is adapted to generate an estimated target ablation zone based on a combination of one or more parameters for an irreversible electroporation protocol and one or more tissue-specific conductivity parameters.

Apparatus and method for the removal of lens tissue includes a first handpiece having a laser emitting probe sized for insertion into a lens capsule and radiating a lens therein. The laser emitting probe includes a lumen for introducing irrigation fluid into the lens capsule. A second handpiece includes a pulsed controlled vibrated needle for insertion into the lens capsule and emulsifying laser eradiated lens tissue. The vibrated needle includes a lumen therethrough for aspiration of emulsified lens tissue and irrigation fluid.

The invention relates to a catheter device including a coil element comprised of NiCr60 alloy material, whose proximal radial end is coiled about the catheter shaft. The coil element and the thermal containment tube are configured so as to emit thermal energy. This is achieved by a catheter device adapted to deliver thermal energy from a source local to the body tissue to be ablated, adapted for connection to a thermal heat source at its distal end, a fluid conduit for passing a fluid into said ports for anchoring and filling the proximal cuff of the thermal energy device, a separate conduit for placement of necessary connective lines to the thermal energy element and monitoring device and a separate conduit for the drainage of bladder fluids during treatment.

The present invention is directed to a method and apparatus for delivering substances, e.g., therapeutic substances, into openings on or near a skin surface, such as hair follicles, pores and/or into sebaceous glands. This can be achieved by using an apparatus to direct a substance into the openings under pressure via one or more nozzles or slits. A portion of the sebum present in the hair follicle is optionally heated and/or removed, e.g. using low-pressure conduit located on the lower surface of the apparatus, before introducing the therapeutic substance.

A method for making an electrode including a particle based film is disclosed in which the film is coated and/or impregnated with veins of conductive material. A support backing is placed adjacent to one side of the film to provide support and prevent damaging the film while the conductive material is applied onto the opposite side of the film. The film is bonded directly to a current collector of an energy storage device.