ARBEL MEDICAL LTD. Patent applications |
Patent application number | Title | Published |
20110224662 | CRYOSURGICAL INSTRUMENT WITH ENHANCED HEAT EXCHANGE - A cryosurgical instrument features a cryogen in liquid or liquid-gaseous (mist) form being supplied by a feeding lumen into the internal space of a cryotip at the distal end of the cryosurgical instrument. The distal section of the feeding lumen is helically coiled, so that an outer diameter of the helically coiled distal section fits an inner diameter of a cylindrical envelope of said cryotip, and said helically coiled distal section and said cylindrical envelope are in thermal contact. | 09-15-2011 |
20100162730 | SIPHON FOR DELIVERY OF LIQUID CRYOGEN FROM DEWAR FLASK - A siphon for delivery of a liquid cryogen from a container such as a Dewar flask. The siphon ensures delivery of a liquid cryogen with a lower proportion of the gaseous fraction. The siphon comprises a central feeding conduit, which is largely contained within the Dewar flask. There is an auxiliary conduit surrounding the central feeding conduit; the outer upper section of this auxiliary conduit is provided with an adjustable valve intended to release a gaseous fraction of the cryogen contained in the annular gap between the auxiliary and central feeding conduits. The upper section of the central feeding conduit is provided with an external layer of a porous capillary coating or with a wick; this ensures that the upper section of the central feeding conduit is continuously wetted with the liquid cryogen. This porous capillary coating prevents gasification of the liquid cryogen in the central feeding conduit. Alternatively, the problem of liquid cryogen gasification may be solved through thermal insulation of the central feeding conduit. | 07-01-2010 |
20090157065 | CRYOSURGICAL INSTRUMENT AND ITS ACCESSORY SYSTEM - The invention proposes a cryosurgical instrument and its accessory system operating on the base of a refrigerant evaporation. The invention comprises combination of some technical solutions. Flow in a central lumen of the cryosurgical instrument has oscillating character; the refrigerant is provided on the internal surface of the distal cryotip in the form of separated portions. 2. The internal surface of the distal cryotip of the cryosurgical instrument is covered by a porous coating, which soaks completely one portion of the refrigerant. 3. Vapors obtained as a result of the refrigerant boiling on the porous coating of the cryotip are removed through the central lumen into the atmosphere. Combination of these technical solutions allows to construct a safely cryosurgical instrument with high freezing power and small outer diameter. The proposed cryosurgical instrument may be designed as a flexible cryocatheter or as a rigid cryoprobe. | 06-18-2009 |
20090129946 | Pumping unit for delivery of liquid medium from a vessel - A pumping unit for delivering a liquid medium from a low pressure vessel such that the delivered medium has sufficiently high pressure, by providing the liquid medium in the form of separated pulses. | 05-21-2009 |
20090125008 | Cryosurgical Instrument and Its Accessory System - The invention proposes a cryosurgical instrument and its accessory system operating on the base of a refrigerant evaporation. The invention comprises combination of some technical solutions. Flow in a central lumen of the cryosurgical instrument has oscillating character; the refrigerant is provided on the internal surface of the distal cryotip in the form of separated portions. 2. The internal surface of the distal cryotip of the cryosurgical instrument is covered by a porous coating, which soaks completely one portion of the refrigerant. 3. Vapors obtained as a result of the refrigerant boiling on the porous coating of the cryotip are removed through the central lumen into the atmosphere. Combination of these technical solutions allows to construct a safely cryosurgical instrument with high freezing power and small outer diameter. The proposed cryosurgical instrument may be designed as a flexible cryocatheter or as a rigid cryoprobe. | 05-14-2009 |
20090082761 | CRYOSURGICAL INSTRUMENT WITH EMBEDDED SEPARATING UNIT - A cryosurgical instrument, in which a separator is installed in a central feeding lumen and/or in a cryotip to separate gaseous and liquid components of a cryogen. | 03-26-2009 |
20080307800 | Siphon for Delivery of Liquid Cryogen from Dewar Flask - The invention involves a siphon for delivery of a liquid cryogen from a container such as a Dewar flask. The siphon ensures delivery of a liquid cryogen with a lower proportion of the gaseous fraction. The siphon comprises a central feeding conduit, which is largely contained within the Dewar flask. There is an auxiliary conduit surrounding the central feeding conduit; the outer upper section of this auxiliary conduit is provided with an adjustable valve intended to release a gaseous fraction of the cryogen contained in the annular gap between the auxiliary and central feeding conduits. The upper section of the central feeding conduit is provided with an external layer of a porous capillary coating or with a wick; this ensures that the upper section of the central feeding conduit is continuously wetted with the liquid cryogen. This porous capillary coating prevents gasification of the liquid cryogen in the central feeding conduit. Alternatively, the problem of liquid cryogen gasification may be solved through thermal insulation of the central feeding conduit. | 12-18-2008 |
20080208181 | Thermally Insulated Needles For Dermatological Applications - For active thermal insulation of a cryoneedle or hyperthermia needle, preferably, the device comprises a needle for transmitting heat or cold, surrounded by a sheath for providing an opposing temperature to protect surrounding skin. | 08-28-2008 |