DE2925270

Cryotherapy apparatus for effecting localised cooling of body tissue comprises an intensively cooled hollow probe extending from a handle. Cooling of the probe is effected by refrigerant passed through a capillary tube in the probe to expand and evaporate in a chamber near the probe tip. Passages in...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	SGUAZZI, ANGELO, TURIN/TORINO, IT
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS DIAGNOSIS HEAT PUMP SYSTEMS HEATING HUMAN NECESSITIES HYGIENE ICE-BOXES IDENTIFICATION LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE REFRIGERATION OR COOLING REFRIGERATORS SURGERY WEAPONS
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Beschreibung
Zusammenfassung:	Cryotherapy apparatus for effecting localised cooling of body tissue comprises an intensively cooled hollow probe extending from a handle. Cooling of the probe is effected by refrigerant passed through a capillary tube in the probe to expand and evaporate in a chamber near the probe tip. Passages in the probe and handle serve to supply and exhaust refrigerant from the capillary tube and chamber respectively. In order to prevent excessive cooling of the handle, automatic means are provided which upon the handle temperature falling below a threshold value are arranged to energise a pressure reducing valve to restrict refrigerant flow to the probe and simultaneously energise heating elements provided at the entry of the valve and in the handle.