Patents Assigned to Arbel Medical Ltd
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Publication number: 20110224662Abstract: 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.Type: ApplicationFiled: April 13, 2009Publication date: September 15, 2011Applicant: ARBEL MEDICAL LTDInventors: Didier Toubia, Alexander Levin, Miron Kaganovich
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Patent number: 7803154Abstract: A cryoprobe for surgical and other treatments. The cryoprobe comprises an expandable section that performs displacement of a distal cryotip forwards when there is elevation of the operation pressure in the interior of the cryoprobe. Needle-wise metal elements are installed on the external side of the cryotip. These needle-wise elements are deflecting outwards by a deflecting member fastened on the distal edge of an external shaft of the cryoprobe. This allows a significant enlargement of the frozen volume of the treated tissue with the same operation temperature and the outer diameter of the cryoprobe. In another embodiment, the needle elements are formed in a displaceable metal sheath and a distal section of a cryotip and/or special protrusions on this distal section act as the deflecting member.Type: GrantFiled: August 2, 2007Date of Patent: September 28, 2010Assignee: Arbel Medical Ltd.Inventors: Didier Toubia, Alexander Levin, Miron Kaganovich
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Publication number: 20100162730Abstract: 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.Type: ApplicationFiled: June 12, 2008Publication date: July 1, 2010Applicant: ARBEL MEDICAL LTD.Inventors: Alexander Levin, Didier Toubia, Miron Kaganovich
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Patent number: 7731711Abstract: 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.Type: GrantFiled: December 17, 2008Date of Patent: June 8, 2010Assignee: Arbel Medical Ltd.Inventor: Alexander Levin
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Publication number: 20090157065Abstract: 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.Type: ApplicationFiled: January 27, 2009Publication date: June 18, 2009Applicant: Arbel Medical, Ltd.Inventor: Alexander LEVIN
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Publication number: 20090129946Abstract: 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.Type: ApplicationFiled: November 21, 2008Publication date: May 21, 2009Applicant: Arbel Medical, Ltd.Inventors: Didier Toubia, Alexander Levin, Miron Kaganovich
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Publication number: 20090125008Abstract: 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.Type: ApplicationFiled: December 17, 2008Publication date: May 14, 2009Applicant: Arbel Medical, Ltd.Inventor: Alexander Levin
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Publication number: 20090082761Abstract: 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.Type: ApplicationFiled: September 25, 2008Publication date: March 26, 2009Applicant: ARBEL MEDICAL, LTD.Inventors: Alexander LEVIN, Didier TOUBIA, Miron KAGANOVICH
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Patent number: 7481806Abstract: 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.Type: GrantFiled: September 12, 2006Date of Patent: January 27, 2009Assignee: Arbel Medical Ltd.Inventor: Alexander Levin
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Publication number: 20080307800Abstract: 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.Type: ApplicationFiled: June 14, 2007Publication date: December 18, 2008Applicant: ARBEL MEDICAL LTD.Inventors: Alexander LEVIN, Didier TOUBIA, Miron KAGANOVICH
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Patent number: 7425211Abstract: The invention proposes a cryoprobe for surgical and other treatments. The cryoprobe comprises a bellow-wise section that performs displacement of a distal cryotip forwards with elevation of operation pressure in the interior of the cryoprobe. Needle-wise metal elements are installed on the external side of the cryotip. These needle-wise elements are deflecting outwards by a deflecting member fastened on the distal edge of an external shaft of the cryoprobe. This allows to enlarge significantly a frozen volume of the treated tissue for same operation temperature and the outer diameter of the cryoprobe.Type: GrantFiled: August 3, 2006Date of Patent: September 16, 2008Assignee: Arbel Medical Ltd.Inventors: Alexander Levin, Didier Toubia
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Publication number: 20080208181Abstract: 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.Type: ApplicationFiled: January 20, 2008Publication date: August 28, 2008Applicant: Arbel Medical Ltd.Inventors: Didier Toubia, Alexander Levin, Miron Kaganovich
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Publication number: 20080140061Abstract: A cryoprobe supports administration of an active agent to a location of cryogenic treatment. The cryoprobe may optionally be combined with a syringe to form a cryoprobe system; alternatively and optionally, the syringe may be external to the cryoprobe.Type: ApplicationFiled: September 6, 2007Publication date: June 12, 2008Applicant: ARBEL MEDICAL LTD.Inventors: Didier TOUBIA, Alexander LEVIN, Miron KAGANOVICH, Liliach Eyal-Waldman
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Publication number: 20080114346Abstract: A cryosurgical probe (cryoprobe) for ablation of a superficial tissue. The cryoprobe operation is preferably based on combination of two freezing effects: a) heat transfer from a liquid, gaseous or aerosolized cryogen, which is delivered from openings in the cryoprobe tip immediately on the surface of the treated tissue, and b) heat transfer from needle(s) installed on the outer surface of the cryotip. This needle (or needles) is constructed from material with high thermal conductivity. In addition, the outer surface of the cryotip may be provided with spacers, which limit the depth of penetration of the needle(s) into the tissue.Type: ApplicationFiled: September 18, 2007Publication date: May 15, 2008Applicant: ARBEL MEDICAL LTD.Inventors: Alexander LEVIN, Didier TOUBIA
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Publication number: 20080033414Abstract: The invention proposes a cryoprobe for surgical and other treatments. The cryoprobe comprises a bellow-wise section that performs displacement of a distal cryotip forwards with elevation of operation pressure in the interior of the cryoprobe. Needle-wise metal elements are installed on the external side of the cryotip. These needle-wise elements are deflecting outwards by a deflecting member fastened on the distal edge of an external shaft of the cryoprobe. This allows to enlarge significantly a frozen volume of the treated tissue for same operation temperature and the outer diameter of the cryoprobe.Type: ApplicationFiled: August 3, 2006Publication date: February 7, 2008Applicant: ARBEL MEDICAL LTD.Inventors: Alexander LEVIN, Didier TOUBIA
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Publication number: 20080033416Abstract: A cryoprobe for surgical and other treatments. The cryoprobe comprises an expandable section that performs displacement of a distal cryotip forwards when there is elevation of the operation pressure in the interior of the cryoprobe. Needle-wise metal elements are installed on the external side of the cryotip. These needle-wise elements are deflecting outwards by a deflecting member fastened on the distal edge of an external shaft of the cryoprobe. This allows a significant enlargement of the frozen volume of the treated tissue with the same operation temperature and the outer diameter of the cryoprobe. In another embodiment, the needle elements are formed in a displaceable metal sheath and a distal section of a cryotip and/or special protrusions on this distal section act as the deflecting member.Type: ApplicationFiled: August 2, 2007Publication date: February 7, 2008Applicant: ARBEL MEDICAL LTD.Inventors: Didier TOUBIA, Alexander LEVIN, Miron KAGANOVICH
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Publication number: 20070027444Abstract: 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.Type: ApplicationFiled: September 12, 2006Publication date: February 1, 2007Applicant: ARBEL MEDICAL LTD.Inventor: Alexander LEVIN
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Patent number: 7137978Abstract: The invention is directed to a cryosurgical instrument and to an accessory system operating on the base of refrigerant evaporation, wherein the portions of the refrigerant are periodically provided to the distal cryotip of the cryosurgical instrument via a central lumen thereof. The internal surface of the distal cryotip is preferably covered by a porous coating capable of soaking at least one portion of the refrigerant. The vapors obtained as a result of the refrigerant boiling on the porous coating of the cryotip are preferably removed through the central lumen of the cryosurgical instrument into the atmosphere. These features may be combined to construct a cryosurgical instrument with relatively high freezing power and small outer diameter which may be designed as a flexible cryocatheter or alternatively as a rigid cryoprobe.Type: GrantFiled: August 11, 2003Date of Patent: November 21, 2006Assignee: Arbel Medical LtdInventor: Alexander Levin