ICECURE MEDICAL LTD.
|ICECURE MEDICAL LTD. Patent applications|
|Patent application number||Title||Published|
|20140194863||PHASE SEPARATION OF CRYOGEN IN CRYOSURGICAL INSTRUMENT - A cryosurgical instrument including: a shaft having a closed distal end defining an expansion chamber and an open proximal end that receives an inflow of cryogen and to exhaust a flow of expanded cryogen; and a heat exchanger with a cryogen delivery tube that spirals around a core disposed along longitudinal axis thereof. The cryogen delivery tube, at least where it spirals, is in fluid tight contact with the inner surface of the shaft so as to form spiraling cryogen exhaust pathways that extend along a portion of a length of the cryosurgical instrument from the distal end of the shaft. The cryogen delivery tube forces a two-phase flow of cryogen to undergo phase separation by centrifugal forces and urges the liquid phase against the external walls of the spiral coil and the outer surface of the spiral gap. Heat exchanging, through boiling, occurs close to the external wall of the instrument.||07-10-2014|
|20140169993||CRYOGEN PUMP - A cryogen pump, including: a pump section that includes: a bellow with an inlet opening at a first end and an exit opening, the inlet opening in direct fluid communication with a volume of a cryogen, the exit opening at least in fluid communication with a second end of the bellow opposing the first end, a pair of plugs configured to sealingly close the opposing ends of the bellow, the pair of plugs cooperating so that when one plug sealingly closes one of the ends, the other end of the bellow is open; and a drive section configured to drive the pump section in a reciprocating manner so as to move the plugs.||06-19-2014|
|20140135754||COILED HEAT EXCHANGER FOR CYROSURGICAL INSTRUMENT - A cryosurgical instrument including: a shaft having a closed distal end defining an expansion chamber and an open proximal end adapted and configured to receive an inflow of cryogen and to exhaust a flow of expanded cryogen; and a heat exchanger. The heat exchanger includes: a plurality of cryogen delivery tubes that spiral around a longitudinal axis thereof; and a diffuser having a plurality of branches, each of the branches supplying received cryogen to a respective one of the delivery tubes. The cryogen delivery tubes, where they spiral, are spaced from each other and in fluid tight contact with the inner surface of the shaft so as to form spiraling cryogen exhaust pathways that extend along a portion of a length of the cryosurgical instrument from the distal end of the shaft.||05-15-2014|
|20110306958||Closed Loop Cryosurgical Pressure And Flow Regulated System - A system for selectively cooling and warming a cryosurgical instrument using a dual phase cryogen, including: two sources of the cryogen, a first source storing liquid phase cryogen and having a first source heater therein that selectively converts at least some of the liquid phase cryogen into gaseous phase cryogen and a second source storing the gaseous phase cryogen; a cryogen delivery control section selectively delivering cryogen to the tip; a cryogen return path from the tip to the first and second sources; a cryogen return control section that includes a pump that pumps the returning cryogen to the second source; and a pressure control section including a first pressure sensor that senses a pressure in the first source, a second pressure sensor that senses a pressure in the second source, and a pressure regulator that regulates the pressure of the first source based on information from the pressure sensors.||12-15-2011|
|20110015624||CRYOSURGICAL INSTRUMENT INSULATING SYSTEM - A device, system and method for controlling the temperature differential between the medium within the cryosurgical instrument and the external temperature of the shaft, apart from at the cryotip itself, uses a fluid medium supplied within an internal space between the shaft and an intermediate lumen positioned between the shaft and a central feeding lumen of the cryosurgical instrument. The temperature of the fluid medium is controlled to provide control of the temperature differential.||01-20-2011|
Patent applications by ICECURE MEDICAL LTD.