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441 results about "Hyperbaric pressure" patented technology
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Mild Hyperbarics is generally a pressure protocol up to 1.3 ATA or 4 PSI. High Pressure Hyperbarics involves pressures above 1.5 ATA. These pressures are achieved in a variety of chambers currently available on the market, including monoplace, multiplace and portable chambers.
Apparatus and method for reducing subcutaneous fat deposits by electroporation
InactiveUS6795728B2Surgical instrument detailsSkin piercing electrodesReduced subcutaneous fatInvasive treatments
Owner:ANGIODYNAMICS INC
Impulse chamber for jet delivery device
InactiveUS20070049873A1Lower the volumeSimple and cost-efficient to manufactureAmpoule syringesJet injection syringesCost effectivenessEngineering
The invention relates to an impulse chamber which can be used for expelling an amount of a fluid compound at a high pressure. The impulse chamber comprises a variable-volume impulse chamber adapted for containing a volume of a flowable drug, an outlet nozzle in fluid communication with the impulse chamber and being adapted to be arranged against the skin of a subject, and a fluid inlet in fluid communication with the impulse chamber. The impulse chamber is defined substantially by a deformable chamber portion, such that deformation thereof reduces the volume of the cavity. In an exemplary embodiment the compressible chamber portion is in the form of an elastomeric tube, this providing a simple, yet reliable and cost-effective impulse chamber unit.
Owner:NOVO NORDISK AS
Electrosurgical generator and method with voltage and frequency regulated high-voltage current mode power supply
ActiveUS6939347B2Efficient implementationEfficient and effective power controlDiagnosticsEmergency protective circuit arrangementsSwitched currentTransformer
DC input energy is converted into DC output voltage by the use of a switched current mode high-voltage power supply. Pulses of input current are switched through a conversion transformer and the energy content of each pulse is converted into the DC output voltage. The time widths of the input current pulses are regulated relative to the DC input and output voltages, the magnitude of the current within each input current pulse, and in relation to maintaining a plurality of different selected operational conditions. The rate at which the input current pulses are converted is changed relative to the level of the DC output voltage.
Owner:CONMED CORP
Circuit and method for controlling an electrosurgical generator using a full bridge topology
InactiveUS20060161148A1Faster loop responseSurgical instruments for heatingRadio frequency energyFull bridge
A system for controlling an electrosurgical generator using a full bridge topology is disclosed. The system includes a high voltage direct current power source which supplies power and a radio frequency output stage which receives power from the high voltage direct current power source and outputs radio frequency energy at a predetermined radio frequency set point. The system also includes one or more sensors which determine one or more parameters of radio frequency energy being applied to tissue and a microprocessor configured to receive one or more parameters and outputs the predetermined radio frequency set point to the radio frequency output stage as a function of one or more of the parameters of radio frequency energy.
Owner:COVIDIEN AG
Osmotic implant with membrane and membrane retention means
InactiveUS7163688B2Prevent ejectionReduces expulsionMedical devicesCapsule deliverySystems designMedicine
An osmotic delivery system for controlled delivery of a beneficial agent includes an implantable capsule containing a beneficial agent and an osmotic engine that swells on contact with water, thereby causing the release of the beneficial agent over time. The osmotic delivery system has a membrane material that allows a controlled amount of fluid to enter from an exterior of the capsule, while preventing the compositions within the capsule from passing out of the capsule. The osmotic delivery system is designed to meet at least the operating pressures of 1000 psi. The membrane material is cast, calendered or extruded followed by machining (i.e., die-cutting, stamping or otherwise cutting to shape) to provide a uniform nonribbed membrane material. The capsule also includes a membrane material-retaining means that is positioned at a fluid uptake end to retain the membrane material within the capsule, even under periods of high pressure.
Owner:INTARCIA THERAPEUTICS INC
Pressure vessel
InactiveUS20030140845A1Prevent escapeAvoid creatingFrom gel statePolycrystalline material growthTemperature controlPressure transmission
A pressure vessel for processing at least one material in a supercritical fluid. The pressure vessel includes a self-pressurizing capsule for containing at least one material and the supercritical fluid in a substantially air-free environment, a pressure transmission medium surrounding the capsule for maintaining an outer pressure on the capsule, at least one heating element insertable in the pressure transmission medium such that the heating element surrounds the capsule, a temperature measurement means for measuring a temperature of the capsule, a temperature controller for controlling the temperature and providing power to the heating element, a restraint to contain and hold in place the capsule, the pressure transmission medium, and the heating element, and at least one seal between the restraint and the pressure transmission medium for preventing escape of the pressure transmission medium. Methods of using the pressure vessel, processing a material at high temperature and high pressure in the presence of a supercritical fluid within the capsule are also described.
Owner:SORAA
Endoscope having resistance to high-temperature and high-pressure steam
An endoscope having resistance to high-temperature and high-pressure steam including an optical unit having at least one optical member; and optical unit supporting frame for supporting the optical unit so that its position can be adjusted in the direction of the optical axis; and a hermetic optical covering member joined to the optical unit supporting frame and having an optical window for covering at least an end portion of the optical unit when it is joined.
Owner:OLYMPUS CORP
High pressure applicator
InactiveUS7572263B2Enhance generation of pressureImprove sealingJoint implantsIntravenous devicesCatheterBiomedical engineering
A pressure applicator for applying pressure to a flowable implant material, e.g., PMMA. A pressure applicator or driver includes a pair of columns which are engageable with one another, preferably by threads to generate a driving pressure. A handle is provided for the operator to grasp and steady the device as he turns the handle to apply pressure to the implantable material within the applicator. A luer-lock or other connecting device is provided for attaching the applicator to a cannula (or a connecting conduit that in turns connects with a cannula) that will deliver the implant material to the desired site. Pressures of about 1000-3000 psi may be generated by this device.
Owner:NEUROTHERM
Apparatus and method for reducing subcutaneous fat deposits by electroporation
InactiveUS20030153960A1Surgical instrument detailsSkin piercing electrodesReduced subcutaneous fatInvasive treatments
An apparatus and method for minimally invasive treatment of deep subcutaneous fat deposits in lieu of cosmetic surgery is disclosed. The apparatus comprises a high voltage pulse generator connected to two or more needle electrodes at least one of which is configured for placement deeply under the skin in a treatment site of the patient's body. High voltage pulses, delivered to the electrodes, create an electric field that kills subcutaneous fat cells.
Owner:ANGIODYNAMICS INC
Apparatus and Method for Reducing Subcutaneous Fat Deposits, Virtual Face Lift and Body Sculpturing by Electroporation
InactiveUS20110009860A1Cut skinReduce weightElectrotherapySurgical needlesReduced subcutaneous fatElectroporation
An apparatus and method for performing non-invasive treatment of the human face and body by electroporation in lieu of cosmetic surgery is provided. The apparatus comprises a high voltage pulse generator and an applicator having two or more electrodes in close mechanical and electrical contact with the patient's skin for applying the pulses to the patient's skin. The applicator may consist of two pieces with one electrode having a sharp tip and another having a flat surface. High voltage pulses delivered to the electrodes create at the tip of the sharp electrode an electric field high enough to cause death of relatively large subcutaneous fat cells by electroporation. Moving the electrode tip along the skin creates a line of necrotic subcutaneous fat cells, which later are metabolized by the body. Multiple applications of the electrode along predetermined lines on the face or neck create shrinkage of the skin and the subcutaneous fat volume underlying the treated area.
Owner:ANGIODYNAMICS INC
Multi-valve injection/aspiration manifold
An IV manifold includes a plurality of injection / aspiration ports and has an elongate configuration with a width greater than the diameter of the ports. A flow channel is formed between mating members of a housing and provided with a U-shaped configuration. Projections along the flow channel direct fluid flow into valve cavities associated with the ports to clear dead spots around the valve elements. A check valve included in the manifold tends to direct high pressures against the valve elements which respond by forming surface seals thereby avoiding deformation. An aspiration port can be formed with a second seal disposed on the side of the valve element opposite the first seal. Opening this second seal by negative pressure in the lumen of the port provides for the aspiration of fluids in the flow channel. Two-way aspiration can be provided by a valve having a cage with or without compressible characteristics to accommodate low tolerance fittings.
Owner:CAREFUSION 303 INC +1
Method and apparatus for electrical stimulation to enhance lancing device performance
A lancing device where electrical stimulation is applied to a skin sampling site prior to making an incision to achieve at least one of pain masking and bodily fluid engorgement at the site. The electrical stimulation is supplied by a low current high voltage AC signal generator in sufficient quantities to produce vasodialation and / or pain masking.
Owner:ROCHE DIABETES CARE INC
Medical device for vessel compatibility during high pressure infusion
The invention provides devices that can be used to deliver a therapeutic agent to a treatment site within the vessel of a patient at increased pressure, while limiting the contact with and pressure placed on the vessel walls. Devices according to the invention include an expandable structure arranged around and on a tube having a lumen. The expandable structure may include a sealing ring that makes contact with the interior surface of a vessel to prevent or decrease fluid flow during delivery of a therapeutic agent. This allows delivery of a therapeutic agent with decreased risk of injury to the treatment site. The invention also provides for large lumen diameters, preventing shearing stress on therapeutic agents such as cell slurries.
Owner:BOSTON SCI SCIMED INC
Respiratory gas consumption monitoring device and monitoring method
InactiveUS6258039B1Accurate measurementEasy to useRespiratorsRespiratory organ evaluationDisplay deviceEngineering
The present invention relates to a respiratory gas consumption monitoring method and monitoring device that is portable and has high measurement accuracy, for enabling the analysis and prediction of the respiratory behavior of subjects employing a variety of different types of breathing apparatuses in water, etc. Respiratory gas consumption monitoring device (20), for monitoring the respiratory gas consumption of the user of a breathing apparatus (1) in which a respiratory gas (G) inside a high pressure gas container (2) is reduced in pressure at pressure regulator (4) and supplied to a breathing mask (10), is provided with:a primary pressure sensor (21) for detecting the pressure prior to pressure reduction at pressure regulator (4);a temperature sensor (22) for correction;an environmental pressure sensor (23) for detecting the environmental pressure;an amplifier (24) for amplifying the signals from the aforementioned sensors;an A / D converter (25) for performing analog / digital conversion of the amplified signal;a data logger (26) for recording and storing the analog / digital converted signals; anda display (27) for display.In addition, as needed, a computer (X) for calculating, analyzing, and predicting data may be housed in housing (28), and connected to breathing apparatus (1) by connecting primary pressure sensor (21) to a high pressure opening (8) of pressure regulator (4) using a high pressure hose (29).
Owner:NIPPON SANSO CORP +1
Endoscope with cleaning optics
InactiveUS7341556B2Preventing barotraumaSimplifies endoscope designBronchoscopesLaryngoscopesMedicineEngineering
The instrument has an original cleaning system, which includes a gas nozzle supplying a gas jet onto the optical surface under high pressure. This pressure is sufficient to enable the gas jet to be a single cleaning means for cleaning the optical surface in all clinical instances. A safety means prevents the patient's internal organs from barotrauma by the gas jet and includes a gas jet catcher and a suction pump of ejection type. The latter is arranged in the instrument's handle and can be used also for the removal of abundant secretions or body's small particles from the patient's cavity. Besides, the gas jet and the suction pump along with a control means form the system for pressure control within the patient's cavity.
Owner:M S VISION
Gas-heated gas-cooled cryoprobe utilizing electrical heating and a single gas source
ActiveUS20060122590A1Quick switchHeating fastSurgical instruments for coolingElectrical resistance and conductanceElectricity
The present invention is of device, system, and method for cooling and heating an operating tip of a cryoprobe using a single source of compressed gas. Cooling of the operating tip is effected by Joule-Thomson expansion of a high-pressure cooling gas through a Joule-Thomson orifice into an expansion chamber. Heating of the operating tip is effected by electrical resistance heating. In preferred embodiments, heating of the operating tip is effected by electrical resistance heating of low-pressure gas flowing towards the operating tip. Preferably, gas from a single gas source is supplied to the probe during both cooling and heating phases, a cooling gas being supplied at high pressure when used for cooling and at low pressure when used for heating. Low-pressure gas supplied during the heating phase is heated as it flows towards the operating tip, preferably by electrical resistance heating within the body of the probe. A single gas input lumen is used during both cooling and heating phases to transport gas into the probe, and a single gas exhaust lumen is used during both cooling and heating phases to conduct gas out of the probe.
Owner:GALIL MEDICAL
Miniature, pulsatile implantable ventricular assist devices and methods of controlling ventricular assist devices
ActiveUS6969345B2Small sizeSmall and efficient and atraumatic and fully implantableControl devicesBlood pumpsSystoleEngineering
A pumping system for assisting either or both ventricles of the heart. In one embodiment, separate devices are provided for each ventricle. In another embodiment, one device provides both right and left pumping. The pumping system is small, efficient, atraumatic, and fully implantable. In addition, the pumping system can provide pulsatile flow during systole. The ventricular assist device includes an actuator plate between a pair of serially connected pumping chambers that operate in a two-stroke mode, specifically a power stroke and a transfer stroke. The ventricular assist device also includes an electromagnetic drive system that provides adjustment to the pump pressure according to the current through an electromagnet. For the pumping system, springs provide a “spring force” on the actuator plate that is towards the high-pressure pump chamber. The bias force allows the springs to store and deliver energy from the electromagnetic drive system to provide better utilization of the pump components, and to reduce the pump size and consumption of electricity.
Owner:WORLD HEART
Method and system for implantable pressure transducer for regulating blood pressure
ActiveUS7835797B2Facilitate communicationReduce and increase blood pressureSpinal electrodesElectrical conductorElectro stimulation
An apparatus and a system can chronically and automatically measure a physiologic parameter associated with the high pressure side of the vasculature and / or regulate blood pressure based upon the measured parameter. The apparatus may be made up of a transducer, a baroreflex activation device having one or more electrodes, and a lead having two or more conductors. The system can measure a physiologic parameter and selectively administer a therapy, such as, for example, electro-stimulation of baroreceptors, based upon the measurement. The transducer for measuring the physiologic parameter can be chronically implanted in the high-pressure side of the vasculature. The implantation method may include intravascularly positioning the transducer in the external carotid artery in such a way that the transducer is first introduced into the arterial vasculature through the superior thyroid artery.
Owner:CVRX
Method and system for implantable pressure transducer for regulating blood pressure
ActiveUS20090143837A1Facilitate communicationLower blood pressureSpinal electrodesArtificial respirationElectrical conductorElectro stimulation
An apparatus and a system can chronically and automatically measure a physiologic parameter associated with the high pressure side of the vasculature and / or regulate blood pressure based upon the measured parameter. The apparatus may be made up of a transducer, a baroreflex activation device having one or more electrodes, and a lead having two or more conductors. The system can measure a physiologic parameter and selectively administer a therapy, such as, for example, electro-stimulation of baroreceptors, based upon the measurement. The transducer for measuring the physiologic parameter can be chronically implanted in the high-pressure side of the vasculature. The implantation method may include intravascularly positioning the transducer in the external carotid artery in such a way that the transducer is first introduced into the arterial vasculature through the superior thyroid artery.
Owner:CVRX
Haemostasis device
ActiveUS20050085789A1Avoid blood lossEasily identifiableInfusion syringesMedical devicesEngineeringOpen type
A haemostasis device (200) comprises a low pressure seal (206) and a high pressure seal (208). A tubular bayonet (201) is movable from a retracted configuration to an inserted configuration to move the low pressure seal (206) between a closed configuration and an open configuration. With the low pressure seal (206) in the open configuration, a guidewire (222) may be inserted through the low pressure seal (206), and with the low pressure seal (206) in the closed configuration, the guidewire (222) may be passed through the low pressure seal (206) while maintaining sealing around the guidewire (222). A collet (209) is movable in a radial direction to move the high pressure seal (208) between an open configuration and a sealing configuration. With the high pressure seal (208) in the sealing configuration, the guidewire (222) is locked in position.
Owner:TELEFLEX LIFE SCI LTD
Respiratory aid apparatus and method
InactiveUS20060011198A1Small sizeImprove comfortTracheal tubesOperating means/releasing devices for valvesControl flowUser needs
A system and method are disclosed for the provision of assisted breathing by the delivery of a controlled pressurized Airflow to the pulmonary airway of a user with breathing disorders. The system comprises a source of compressed respiratory gas (112), a user interface unit (115) including at least one Venturi device (120) and a thin flexible tubing (116) connecting between the source of high pressure gas (112) and the Venturi device. The system and method provide a regulated and controlled flow of air to the user (105) in accordance with the user needs. The invention further discloses a novel small light-weight user interface for replacing prior art breathing masks.
Owner:INTELLIBREATHE
High pressure pre-burst for improved fluid delivery
ActiveUS20090326439A1Little fall timeLittle rise timeUltrasound therapyElectrotherapyMultiple injectionInjection port
A needle with multiple injection ports is used in connection with a high-pressure injection system to infuse a treatment solution into a treatment area below the dermis of the skin. The needle has multiple tines that extend outwardly from the injection ports while inside the treatment area to disrupt tissue in the treatment area and to create multiple pathways of infusion. The tines are withdrawn and the needle is partially withdrawn, and solution is injected from the needle into the treatment area at high pressure to infuse the tissue within the treatment area. The burst, infusion, and a treatment such as an energy or third solution may be interleaved and repeated multiple times.
Owner:ULTHERA INC
Electrosurgical generator and method using a high permeability, high resistivity transformer
InactiveUS20080071260A1Increase insulation thicknessReduce parasitic capacitanceSurgical instruments for heatingFrequency spectrumTransformer
A transformer which conducts or responds to a high voltage, high frequency electrosurgical output waveform has a core with a permeability in the range of 500-2000 and a resistivity in the range of 90,000-1,000,000 ohm centimeters and insulation on the secondary high voltage winding of at least 800 VAC per 0.001 inch thickness. The permeability and resistivity of the core enhance energy conversion, reduce parasitic capacitance to enhance the high frequency spectral energy content of the electrosurgical output waveform while simultaneously reducing leakage current, reducing the size of the transformer, enhancing manufacturing reproducibility and enhancing the ability to pass a high voltage safety test.
Owner:CONMED CORP
High-voltage pulse ablation systems and methods
ActiveUS9072518B2Ultrasound therapySurgical instruments for heatingHigh voltage pulseElectrophysiology
High-voltage pulses ablation systems and methods are used to ablate tissue and form lesions. A variety of different electrophysiology devices, such as catheters, surgical probes, and clamps, may be used to position one or more electrodes at a target location. Electrodes can be connected to power supply lines and, in some instances, the power to the electrodes can be controlled on an electrode-by-electrode basis. High-voltage pulse sequences provide a total amount of heating that is typically less than that which is observed with thermally-based radiofrequency energy ablation protocols.
Owner:ESTECH ENDOSCOPIC TECH +1
Respiratory aid apparatus and method
InactiveUS7562659B2Minimize discomfortPrecise regulationTracheal tubesOperating means/releasing devices for valvesControl flowUser needs
Owner:INTELLIBREATHE
Medium voltage therapy applications in treating cardiac arrest
ActiveUS20060142809A1Work comfortablyImproper useHeart defibrillatorsElectricityCardiorespiratory arrest
A method and system for treating an individual experiencing cardiac arrest using an automatic external defibrillator (AED) includes placing a first and a second electrode of the AED in electrical communication with an exterior surface of the individual. A need to apply a high voltage defibrillation signal to the individual is automatically determined. The method also includes automatically causing the AED to apply a medium voltage therapy (MVT) signal through the first and the second electrodes to the individual. The MVT signal is applied to induce a hemodynamic effect in the individual. Alternatively, or additionally, the MVT signal is applied to induce a respiratory effect in the individual. Optionally, the MVT signal is applied before determining the need to apply the defibrillation signal.
Owner:GALVANI
Two-phase oxygenated solution and method of use
A two-phase mixture is provided having a dissolved gas and a suspension of bubbles in a liquid. Methods for making, maintaining, and using the two-phase mixture are also provided. The gas molecules may be introduced into the liquid at a high velocity under elevated pressure to form a supersaturated solution that retains the dissolved gas concentration in solution when the solution is exposed to ambient conditions. The mixture may be used in a number of applications where high concentrations of gas must be retained in solution during prolonged exposure to ambient conditions. An example of use is the treatment of wounds to non-surgically remove dead, devitalized, contaminated and foreign matter from tissue cells. The mixture may be combined with a plastic to encapsulate the suspension of bubbles to minimize liberation of the gas bubbles from the mixture.
Owner:ECKERT C EDWARD
Magnetically actuated endoscope coupler
An endoscopic coupler by which the rotary and / or linear motion of an external ring is transferred via magnetic interaction of specially configured continuous plastic magnets to a lens resident in a hermetically sealed housing to effect focusing and / or zooming action of the lens without mechanically breaching the integrity of the hermetic seal thereby making the coupler particularly suitable for withstanding the rigors of autoclaving.
Owner:LIGHTHOUSE IMAGING
Gas throttling cooling type radio frequency ablation electrode
ActiveCN101209217ANovel and compact structureEasy to useElectrotherapySurgical instruments for heatingRf ablationThermal insulation
Owner:ACCUTARGET MEDIPHARMA (SHANGHAI) CO LTD
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