State of Israel, Ministry of Defence, Rafael-armaments Development

State of Israel Ministry of Defense, Rafael Armaments Development

Rafael-armament Development Authority Ltd.

Galil Medical Ltd.

State of Israel Ministry of Defense, Rafael-armaments

Ben-Zion Maytal

Mordechai Bliweis

Gideon Even Sturlesi

The invention relates to a heat exchanger, which includes a pipe, heat conductive fins having an elongate cross-section, and a coating of silver applied to the outer surface of the fins and the outer surface of the pipe adjacent to the fins. The fins of the heat exchanger, are a metal wire helically wound around the pipe, are connected to the pipe solely by the coating of silver.

Heat Exchangers

System and method for performing MRI-guided cryosurgery are provided. The system includes: (a) an MRI magnet for accommodating a patient, the MRI magnet having at least one opening for enabling access of a surgeon to the patient, the MRI magnet including at least one channel extending therethrough for receiving a line member of a surgical device; (b) a surgical device, including: (i) an operating member for operating the patient; (ii) a control member for controlling the operating member, the control member being positioned externally to the MRI room; (iii) a line member having a first end connectable to the operating member and a second end connectable to said control member, wherein at least a portion of the line member is received within the channel of the MRI magnet. Preferably, the line member includes an underground portion extending through an underground channel. The MRI magnet may include an interface member for connecting the operating member thereto. Preferably, the operating member is a cryogenic probe including a Joule-Thomson heat exchanger, the line member is a gas tube, and the control member includes a gas container for providing high pressure gas to the cryogenic probe via the gas tube. Preferably, the control member includes a microprocessor for controlling the operation of said surgical device.

System and method for MRI-guided cryosurgery

A method for creating a surface having a fast changing temperature, comprises providing a heat exchanger coupled to an orifice opening into a jacket which is in contact with the surface to be heated and cooled, the jacket forming a reservoir capable of housing a fluid in contact with the surface to be heated and cooled, and providing two gas sources, each gas source being independently connected to the said heat exchanger, one source providing a first gas, which liquefies when it expands through the orifice, and the other gas source providing a second gas, having an inversion temperature lower than the temperature obtained by the liquefaction of the first gas, and causing the exhaust gas flowing out from the jacket, to flow through the said heat-exchanger to preheat or precool the inflowing gas, as the case may be, and further causing the said first and the second gas alternately to flow through the said heat exchanger and orifice, to cool or to heat the surface; means being provided for allowing and stopping the flow of each gas through the orifice.

Fast changing heating-cooling device and method

A method for creating a surface having a fast changing temperature, comprises providing a heat exchanger coupled to an orifice opening into a jacket which is in contact with the surface to be heated and cooled, the said jacket forming a reservoir capable of housing a fluid in contact with the surface to be heated and cooled, and providing two gas sources, each gas source being independently connected to the said heat exchanger, one source providing a first gas, which liquefies when it expands through the said orifice, and the other gas source providing a second gas, having an inversion temperature lower than the temperature obtained by the liquefaction of the first gas, and causing the exhaust gas flowing out from the said jacket, to flow through the said heat-exchanger to preheat or precool the inflowing gas, as the case may be, and further causing the said first and the said second gas alternately to flow through the said heat exchanger and orifice, to cool or to heat the said surface; means being provided for allowing and stopping the flow of each gas through the said orifice.

A cryogenic surgical apparatus comprises: a) a plurality of probes, each having a contact surface, each of which probes is suitable for creating fast temperature changes at the said contact surface; b) temperature generation means, coupled to each of the said probes, being capable of creating cryogenic and above 0.degree. C. temperatures at the said contact surface of the said probe; and c) temperature control means, to control the said temperature generation means.

Multiprobe surgical cryogenic apparatus

An apparatus for creating controlled temperature changes on a contact surface, comprises: a) a probe having a contact surface, which probe is suitable for creating fast temperature changes at the said contact surface; b) temperature generation means, coupled to the said probe, being capable of creating cryogenic and above 0.degree. C. temperatures at the said contact surface of the said probe; and c) processing means to control the said temperature generation means according to predetermined operating conditions.

Controlled cryogenic contact system

An apparatus for creating controlled temperature changes on a contact surface, comprises: a) a probe having a contact surface, which probe is suitable for creating fast temperature changes at the contact surface; b) temperature generation assembly, coupled to the probe, being capable of creating cryogenic and above 0.degree. C. temperatures at the contact surface of the probe; and c) processing assembly to control the temperature generation assembly according to predetermined operating conditions.

Growing community of inventors

Atlit, Israel

Ben-Zion Maytal