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694 results about "Gas transfer" patented technology

Gas transfer. The movement of respiratory gases (carbon dioxide, nitrogen, or oxygen) from the alveoli of the lung to the pulmonary capillaries or from the pulmonary capillaries to the alveoli. See also: transfer.

Catheter device

Catheter device for insertion into a vessel of a human or animal body, comprising a guide catheter and, incorporated in same, an OCT catheter with an OCT imaging device, the guide catheter having a balloon inflatable via a supply line for occluding the vessel, as well as a device for delivering a liquid or gas to the vascular region to be recorded by means of the OCT imaging device, in particular the vascular region located distally to the balloon, wherein there is provided on the guide catheter a second inflatable balloon spaced apart from the first balloon for occluding the vessel, wherein the section of the guide catheter between the two balloons is transparent, at least in sections, to the OCT radiation emittable by the OCT imaging device disposed inside the guide catheter.
Owner:SIEMENS HEALTHCARE GMBH

Gas-heated gas-cooled cryoprobe utilizing electrical heating and a single gas source

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

Rotary degasser and rotor therefor

A device for dispersing gas into molten metal includes an impeller, a drive shaft having a gas-transfer passage therein, and a first end and a second end, and a drive source. The second end of the drive shaft is connected to the impeller and the first end is connected to the drive source. The impeller includes a first portion and a second portion with a plurality of cavities. The first portion covers the second portion to help prevent gas from escaping to the surface without entering the cavities and being mixed with molten metal as the impeller rotates. When gas is transferred through the gas-transfer passage, it exits through the gas-release opening(s) in the bottom of the impeller. At least some of the gas enters the cavities where it is mixed with the molten metal being displaced by the impeller. Also disclosed are impellers that can be used to practice the invention.
Owner:MOLTEN METAL EQUIP INNOVIATIONS LLC
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