摘要:
Devices and methods for cooling microwave antennas are disclosed herein. The cooling systems can be used with various types of microwave antennas. One variation generally comprises a handle portion with an elongate outer jacket extending from the handle portion. A microwave antenna is positioned within the handle and outer jacket such that cooling fluid pumped into the handle comes into contact directly along a portion of the length, or a majority of the length, or the entire length of the antenna to allow for direct convective cooling. Other variations include cooling sheaths which form defined cooling channels around a portion of the antenna. Yet another variation includes passively-cooled systems which utilize expandable balloons to urge tissue away from the surface of the microwave antenna as well as cooling sheaths which are cooled through endothermic chemical reactions. Furthermore, the microwave antennas themselves can have cooling lumens integrated directly therethrough.
摘要:
This invention is an improved tissue-localizing device with an electrically energized locator element for fixedly yet removal marking a volume of tissue containing a suspect region for excision. The electrical energizing of the locator element facilitates the penetration of the locator element in to subject's tissue and minimizes resistance due to dense or calcified tissues. At least one locator element is deployed into tissue and assumes a predetermined curvilinear shape to define a tissue border containing a suspect tissue region along a path. Multiple locator elements may be deployed to further define the tissue volume along additional paths defining the tissue volume border that do not penetrate the volume. Delivery of electric cut-rent may be achieved through monopolar or bipolar electronic configuration depending on design needs. Various energy sources, e.g, radio frequency, microwave or ultrasound, may be implemented in this energized tissue-localizing device.
摘要:
The present invention is directed to systems, apparatus, methods and procedures for the noninvasive treatment of tissue using microwave energy. In one embodiment of the invention a medical device and associated apparatus and procedures are used to treat dermatological conditions using microwave energy.
摘要:
Systems, methods and devices for creating an effect using microwave energy to specified tissue are disclosed herein. A system for the application of microwave energy to a tissue can include, in some embodiments, a signal generator adapted to generate a microwave signal having predetermined characteristics, an applicator connected to the generator and adapted to apply microwave energy to tissue, the applicator comprising one or more microwave antennas and a tissue interface, a vacuum source connected to the tissue interface, a cooling source connected to said tissue interface, and a controller adapted to control the signal generator, the vacuum source, and the coolant source. The tissue may include a first layer and a second layer, the second layer below the first layer, and the controller is configured such that the system delivers energy such that a peak power loss density profile is created in the second layer.
摘要:
A lighting device comprising: a light emitting diode lighting panel having first and second opposing surfaces; light emitting diodes at a periphery of light emitting diode lighting panel for emitting light through the first surface; a reflective surface at the second surface of the light emitting diode lighting panel; and a power supply unit connected to the light emitting diode panel, the power supply having first and second ends, and electrical circuitry for converting alternating current to direct current between the first and second ends, wherein the first end is for insertion into the a socket.
摘要:
Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.
摘要:
A protective material comprising a flexible substrate including a top surface and a plurality of discrete guard plates affixed to the top surface in a spaced relationship to each other. The guard plates comprise a material which significantly expands upon the addition of sufficient heat forming a thermally insulating, flame retardant layer.
摘要:
A light-emitting diode lighting assembly, including a plurality of light-emitting diode lighting panels with light-emitting diodes positioned on at least one edge of the light-emitting diode lighting panels, a plurality of prism plates for refracting light emitted by the light-emitting diodes, wherein each of the plurality of prism plates is respectively positioned above one of the light-emitting diode panels, and a top plate covering the plurality of prism plates such that the light emitting diode lighting assembly appears seamless.
摘要:
Devices and methods for cooling microwave antennas are disclosed herein. The cooling systems can be used with various types of microwave antennas. One variation generally comprises a handle portion with an elongate outer jacket extending from the handle portion. A microwave antenna is positioned within the handle and outer jacket such that cooling fluid pumped into the handle comes into contact directly along a portion of the length, or a majority of the length, or the entire length of the antenna to allow for direct convective cooling. Other variations include cooling sheaths which form defined cooling channels around a portion of the antenna. Yet another variation includes passively-cooled systems which utilize expandable balloons to urge tissue away from the surface of the microwave antenna as well as cooling sheaths which are cooled through endothermic chemical reactions. Furthermore, the microwave antennas themselves can have cooling lumens integrated directly therethrough.
摘要:
Embodiments of the invention relate to apparatuses and methods for depositing materials on substrates during atomic layer deposition processes. In one embodiment, a chamber for processing substrates is provided which includes a chamber lid assembly containing an expanding channel extending along a central axis at a central portion of the chamber lid assembly and a tapered bottom surface extending from the expanding channel to a peripheral portion of the chamber lid assembly. The tapered bottom surface may be shaped and sized to substantially cover the substrate receiving surface. The chamber lid assembly further contains a conduit coupled to a gas passageway, another conduit coupled to another gas passageway, and both gas passageways circumvent the expanding channel. Each of the passageways has a plurality of inlets extending into the expanding channel and the inlets are positioned to provide a circular gas flow through the expanding channel.