Abstract: Described herein are various embodiments of an oxygen concentrator system and method of delivering oxygen enriched gas to a user. In some embodiments, oxygen concentrator system includes one or more components that improve the efficiency of oxygen enriched gas delivery during operation of the oxygen concentrator system.

Abstract: Described herein are various embodiments of an oxygen concentrator system. In some embodiments, oxygen concentrator system includes one or more components that improve energy usage during operation of the oxygen concentrator system.

Abstract: Oxygen concentrator apparatus and method of use are described herein. The oxygen concentration may include at least one canister; gas separation adsorbent disposed in at least one canister, and a compression system. The compression system may include at least one compressor coupled to the at least one canister. The compressor may include a first rotor comprising at least two projections and a second rotor comprising at least two recesses. During rotation of the first and second rotors, gas moves through the compressor to at least one of the canisters. In the canisters, gas separation adsorbent may separate at least some nitrogen from air produce oxygen enriched gas.

Abstract: Described herein are various embodiments of an oxygen concentrator system that includes a home oxygen concentrator system couplable to a portable oxygen concentrator system.

Abstract: Described herein are various embodiments of an oxygen concentrator system. In some embodiments, oxygen concentrator system includes one or more components that improve energy usage during operation of the oxygen concentrator system.

Abstract: Described herein are various embodiments of an oxygen concentrator system that includes a home oxygen concentrator system couplable to a portable oxygen concentrator system.

Abstract: Oxygen concentrator apparatus and method of use are described herein. The oxygen concentration may include at least one canister; gas separation adsorbent disposed in at least one canister, and a compression system. The compression system may include at least one compressor coupled to the at least one canister. The compressor may include a first rotor comprising at least two projections and a second rotor comprising at least two recesses. During rotation of the first and second rotors, gas moves through the compressor to at least one of the canisters. In the canisters, gas separation adsorbent may separate at least some nitrogen from air produce oxygen enriched gas.

Abstract: Methods, apparatus, and systems for delivering electromagnetic energy to a patient's tissue with a reduction in the pain experienced by the patient. Electromagnetic energy is delivered from a treatment electrode through the skin surface to the tissue at a plurality of power levels over a treatment time. During the energy delivery, a portion of the treatment electrode is in a contacting relationship with the skin surface. A dielectric member may be disposed between the treatment electrode and the skin surface when the electromagnetic energy is delivered.

Abstract: Methods, apparatus, and systems for transcutaneously treating tissue located beneath a skin surface with electromagnetic energy delivered from a treatment electrode. A portion of the treatment electrode is contacted with the skin surface. While maintaining the contact between the portion of the treatment electrode and the skin surface, the electromagnetic energy is delivered from the treatment electrode in a plurality of power pulses through the skin surface to the tissue over a treatment time with a time gap between each consecutive pair of the pulses to lower a level of pain perceived by a patient.

Abstract: Described herein are various embodiments of an oxygen concentrator system that includes a home oxygen concentrator system couplable to a portable oxygen concentrator system.

Abstract: Described herein are various embodiments of an oxygen concentrator system. In some embodiments, oxygen concentrator system includes one or more components that improve energy usage during operation of the oxygen concentrator system.

Abstract: Described herein are various embodiments of an oxygen concentrator system and method of delivering oxygen enriched gas to a user. In some embodiments, oxygen concentrator system includes one or more components that improve the efficiency of oxygen enriched gas delivery during operation of the oxygen concentrator system.

Abstract: Disclosed herein are systems and methods for preferentially heating subcutaneous tissue. Systems for heating subcutaneous tissue may comprise one or more radio-frequency (RF) electrodes having contoured tissue contacting surfaces, such as electrodes with concave or convex surface contours. Methods may comprise applying RF voltage or current from one or both of the handpieces to attain a target tissue and/or electrode temperature and to maintain the tissue and/or electrode at that temperature.

Abstract: Methods and systems for delivering electromagnetic energy to a patient's tissue with an attendant reduction in the pain experienced by the patient due to tissue heating. Electromagnetic energy is delivered from an electrode through a skin surface to heat a first region of tissue beneath the skin surface and a second region of the tissue between the first region and the skin surface. During the delivery of the electromagnetic energy, a temperature of the second region of the tissue is caused to oscillate between at least one maximum temperature and at least one minimum temperature. The temperature oscillation may be induced by a timed sequence of cryogen pulses delivered to the electrode, which in turn extracts thermal energy out of the second region of tissue through the contacting skin surface.

Abstract: Methods, apparatus, and systems for transcutaneously treating tissue located beneath a skin surface with electromagnetic energy delivered from a treatment electrode. A portion of the treatment electrode is contacted with the skin surface. While maintaining the contact between the portion of the treatment electrode and the skin surface, the electromagnetic energy is delivered from the treatment electrode in a plurality of power pulses through the skin surface to the tissue over a treatment time with a time gap between each consecutive pair of the pulses to lower a level of pain perceived by a patient.

Abstract: An active voltage management device and a method for actively managing a voltage level of an energy storage device are provided. The active voltage management device comprises: a pair of input terminals adapted to be connected to the energy storage device; a reverse polarity protection circuit coupled to the pair of input terminals; a voltage comparator circuit adapted to compare a second voltage associated with the voltage level of the energy storage device to a reference voltage and to provide an output based upon the comparison of the second voltage to the reference voltage; and a transistor adapted to operate in a linear mode to dissipate energy from the energy storage device at a substantially constant current level, wherein output of the voltage comparator circuit is adapted to activate the transistor when the second voltage is greater than or equal to the reference voltage.

Abstract: Methods, apparatus, and systems for delivering electromagnetic energy to a patient's tissue with a reduction in the pain experienced by the patient. Electromagnetic energy is delivered from a treatment electrode through the skin surface to the tissue at a plurality of power levels over a treatment time. During the energy delivery, a portion of the treatment electrode is in a contacting relationship with the skin surface. A dielectric member may be disposed between the treatment electrode and the skin surface when the electromagnetic energy is delivered.

Abstract: A method of operating a tissue treatment apparatus for heating adipose tissue located beneath the dermis with high frequency energy from an electrode. The method includes delivering high frequency energy from the electrode to the adipose tissue at a dose that is applied over a period of time sufficient to heat the adipose tissue while at the same time not cause significant heating of the dermis. Embodiments of the method include cooling the electrode to cool a region of tissue next to the electrode.

Abstract: An active voltage management device and a method for actively managing a voltage level of an energy storage device are provided. The active voltage management device comprises: a pair of input terminals adapted to be connected to the energy storage device; a reverse polarity protection circuit coupled to the pair of input terminals; a voltage comparator circuit adapted to compare a second voltage associated with the voltage level of the energy storage device to a reference voltage and to provide an output based upon the comparison of the second voltage to the reference voltage; and a transistor adapted to operate in a linear mode to dissipate energy from the energy storage device at a substantially constant current level, wherein output of the voltage comparator circuit is adapted to activate the transistor when the second voltage is greater than or equal to the reference voltage.

Abstract: The invention concerns single and multiple cell lithium ion batteries. Embodiments of the invention concern single and multiple cell lithium ion batteries with built-in controllers that monitor the cell or cells and provide a safety disconnect when certain monitored conditions are detected by the controller. Preferred embodiment single and multiple cell lithium ion batteries have their cell or cells within a container having a positive terminal and a negative terminal. The built-in controller monitors the cell or cell for each of the following conditions: over temperature, short-circuit, overcharge, and over-discharge and the controller provides a safety disconnect when one of the monitored conditions exist.