Patents by Inventor Rachid Mahrouche

Rachid Mahrouche has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12127786
    Abstract: A medical system, comprising an ablation catheter is disclosed. The ablation catheter includes an elongate shaft with a proximal end, a distal end and a lumen disposed between the proximal end and the distal end. The ablation catheter also includes an expandable element in fluid communication with the lumen, a first temperature sensor operable to measure a first temperature; and a second temperature sensor operable to measure a second temperature. The first temperature sensor and the second temperature sensor are longitudinally separated from each other by at least a portion of the expandable element.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: October 29, 2024
    Assignee: Medtronic CryoCath LP
    Inventors: Dan Wittenberger, Rachid Mahrouche
  • Patent number: 12011205
    Abstract: An adapter for putting two incompatible medical systems in fluid communication with each other. The adapter may have a continuous outer diameter and may include two segments: a first segment composed of a rigid material and including a first portion and a second portion, the first portion having a continuous outer diameter and the second portion defining one or more flanges, the first segment defining a first passage therethrough; and a second segment composed of a flexible material and coupled to the first segment, including a first portion and a second portion. The first portion of the second segment may have an inner surface configured to surround the flanges of the second portion of the first segment, and the second portion of the second segment having a tapered inner surface, the second segment defining a second passage therethrough that is continuous with the first passage.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: June 18, 2024
    Assignee: Medtronic CryoCath LP
    Inventors: Stephane Moreau, Rachid Mahrouche, Eric Monger, Nadine Nahoul, Vladimir Tzonev
  • Publication number: 20230389976
    Abstract: A method and system for controlling flow of refrigerant through a medical device are disclosed. According to one aspect, a system for delivering refrigerant to an expansion cavity portion of the medical device comprises a first path and a second path in communication with the expansion cavity portion. The system also includes a first PID controller in communication with a first proportional valve in the first path, the first PID controller being configured to operate the first proportional valve based on a pressure measurement in the first path; and a second PID controller in communication with a second proportional valve in the second path, the second controller being configured to operate the second proportional valve based on a pressure measurement in the second path or in the expansion cavity portion.
    Type: Application
    Filed: May 15, 2023
    Publication date: December 7, 2023
    Inventors: Rachid Mahrouche, Gilles Desrochers, Wing-Choi Ma, Julia A. Schraut, Bertin Simeon, Scott A. Hareland
  • Patent number: 11653968
    Abstract: A system and method for providing greater control over the temperature of a thermal treatment element of a medical device, enabling an operator to extend a thawing period of a cryoablation procedure. The system may include a fluid flow path that bypasses a subcooler, giving the operator selective control over the temperature of refrigerant delivered to the treatment element and, therefore, treatment element temperature. Additionally or alternatively, the system may include a fluid delivery conduit that is in communication with a liquid refrigerant and a gaseous refrigerant. Adjustment of the ratio of liquid to gaseous refrigerant also offers control over the treatment element temperature. Additionally or alternatively, the system may include one or more valves and/or heating elements in the fluid delivery and recovery conduits to control the treatment element temperature.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: May 23, 2023
    Assignee: Medtronic CryoCath LP
    Inventors: Rachid Mahrouche, Dan Wittenberger
  • Patent number: 11648044
    Abstract: A system and kit for using a source of low-pressure refrigerant for a cryotherapy procedure and for subcooling a cryotherapy refrigerant. The system may generally include a fluid reservoir and a fluid flow path in thermal exchange with the fluid reservoir, the fluid flow path including a first thermal exchange device in thermal exchange with the fluid reservoir, a compressor in fluid communication with the first thermal exchange device, a condenser, a reversing valve located between the compressor and the condenser, a second thermal exchange device located between the reversing valve and the compressor, and an expansion valve located between the condenser and the thermal exchange device. The third thermal exchange device may be configured to be in fluid communication with the cryotherapy console and configured to place a secondary refrigerant within the first fluid flow path in thermal communication with a secondary refrigerant of the cryotherapy system.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: May 16, 2023
    Assignee: Medtronic CryoCath LP
    Inventors: Rachid Mahrouche, Eric Monger, Vladimir Tzonev
  • Patent number: 11607262
    Abstract: A system and method of using a source of low-pressure refrigerant for a cryotherapy procedure. The system may generally include a fluid reservoir and a fluid flow path in thermal exchange with the fluid reservoir, the fluid flow path including a thermal exchange device in thermal exchange with the fluid reservoir, a compressor in fluid communication with the thermal exchange device, a condenser, a reversing valve located between the compressor and the condenser, and an expansion valve located between the condenser and the thermal exchange device. The method may include transferring a low-pressure refrigerant to a first fluid reservoir, reducing the temperature of the refrigerant within the first fluid reservoir, increasing the temperature of the refrigerant within the first fluid reservoir, and transferring the pressurized refrigerant from the first fluid reservoir to a second fluid reservoir.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: March 21, 2023
    Assignee: Medtronic Cryocath LP
    Inventors: Rachid Mahrouche, Eric Monger
  • Publication number: 20230053149
    Abstract: A method of ablating tissue includes positioning a treatment device proximate to a target tissue area. The treatment device has an expandable treatment element. The expandable treatment element is inflated with a refrigerant during an inflation phase such that at least a portion of the expandable treatment element is in contact with the target tissue area. A first pressure measurement of the inflated expandable treatment element is recorded and compared to a predetermined pressure threshold. The refrigerant is circulated within the expandable treatment element during an ablation phase to reduce a temperature of the target tissue area to a temperature sufficient to cryoablate the target tissue area. A second pressure measurement of the expandable treatment element is recorded during the ablation phase and compared to the predetermined pressure threshold.
    Type: Application
    Filed: July 22, 2022
    Publication date: February 16, 2023
    Inventors: Nicolas Coulombe, Rachid Mahrouche, Louis Jacob, Dan Wittenberger, Martin Lacharite, Jean-Pierre Lalonde
  • Patent number: 11357563
    Abstract: A system and method for controlling the inflation, ablation, and deflation of a balloon catheter. The system includes a balloon catheter, a console, a pressurized gas or liquid inflation source, and an umbilical system to deliver pressurized coolant to the balloon catheter. The system may include controller that monitors the amount of pressure and volume within the balloon catheter. During inflation, the pressure and/or volume of fluid within the balloon is maintained at a target amount in order to provide sufficient mechanized pressure against the desired target region. The system limits the inflation pressure such that a safe quantity of gas would be released should a leak occur. If the amount falls below a certain threshold level, gas or fluid egress is presumed and the inflation process is halted.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: June 14, 2022
    Inventors: Marwan Abboud, Rachid Mahrouche, Chadi Harmouche, Teresa Ann Mihalik, Gilles Desrochers
  • Publication number: 20210369322
    Abstract: An adapter for putting two incompatible medical systems in fluid communication with each other. The adapter may have a continuous outer diameter and may include two segments: a first segment composed of a rigid material and including a first portion and a second portion, the first portion having a continuous outer diameter and the second portion defining one or more flanges, the first segment defining a first passage therethrough; and a second segment composed of a flexible material and coupled to the first segment, including a first portion and a second portion. The first portion of the second segment may have an inner surface configured to surround the flanges of the second portion of the first segment, and the second portion of the second segment having a tapered inner surface, the second segment defining a second passage therethrough that is continuous with the first passage.
    Type: Application
    Filed: August 17, 2021
    Publication date: December 2, 2021
    Inventors: Stephane Moreau, Rachid Mahrouche, Eric Monger, Nadine Nahoul, Vladimir Tzonev
  • Publication number: 20210338303
    Abstract: A device, system, and method for performing a variety of treatment procedures safely with a single treatment device. For example, a system is provided that includes a treatment device with a highly conformable balloon that is inflated at a constant pressure and that remains “soft” during use, which enhances balloon-tissue contact, treatment efficacy, and patient safety. In one embodiment, a system for ablating tissue comprises: a treatment device including a highly conformable balloon; a control unit including a fluid supply reservoir in fluid communication with the highly conformable balloon, the control unit being configured to deliver fluid from the fluid supply reservoir to the highly conformable balloon such that the highly conformable balloon is maintained at a balloon pressure of between 0.2 psig and 3.0 psig.
    Type: Application
    Filed: July 14, 2021
    Publication date: November 4, 2021
    Inventors: Jean-Pierre LALONDE, Scott A. HARELAND, Jay L. KELLEY, Rachid MAHROUCHE, Wlodzimierz SADZYNSKI, Megan M. SCHMIDT, Bertin SIMEON, Vladimir TZONEV
  • Patent number: 11123126
    Abstract: An adapter for putting two incompatible medical systems in fluid communication with each other. The adapter may have a continuous outer diameter and may include two segments: a first segment composed of a rigid material and including a first portion and a second portion, the first portion having a continuous outer diameter and the second portion defining one or more flanges, the first segment defining a first passage therethrough; and a second segment composed of a flexible material and coupled to the first segment, including a first portion and a second portion. The first portion of the second segment may have an inner surface configured to surround the flanges of the second portion of the first segment, and the second portion of the second segment having a tapered inner surface, the second segment defining a second passage therethrough that is continuous with the first passage.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: September 21, 2021
    Inventors: Stephane Moreau, Rachid Mahrouche, Eric Monger, Nadine Nahoul, Vladimir Tzonev
  • Patent number: 11090101
    Abstract: A device, system, and method for performing a variety of treatment procedures safely with a single treatment device. For example, a system is provided that includes a treatment device with a highly conformable balloon that is inflated at a constant pressure and that remains “soft” during use, which enhances balloon-tissue contact, treatment efficacy, and patient safety. In one embodiment, a system for ablating tissue comprises: a treatment device including a highly conformable balloon; a control unit including a fluid supply reservoir in fluid communication with the highly conformable balloon, the control unit being configured to deliver fluid from the fluid supply reservoir to the highly conformable balloon such that the highly conformable balloon is maintained at a balloon pressure of between 0.2 psig and 3.0 psig.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: August 17, 2021
    Assignee: Medtronic CryoCath LP
    Inventors: Jean-Pierre Lalonde, Scott A. Hareland, Jay L. Kelley, Rachid Mahrouche, Wlodzimierz Sadzynski, Megan M. Schmidt, Bertin Simeon, Vladimir Tzonev
  • Publication number: 20210169571
    Abstract: A medical system, comprising an ablation catheter is disclosed. The ablation catheter includes an elongate shaft with a proximal end, a distal end and a lumen disposed between the proximal end and the distal end. The ablation catheter also includes an expandable element in fluid communication with the lumen, a first temperature sensor operable to measure a first temperature; and a second temperature sensor operable to measure a second temperature. The first temperature sensor and the second temperature sensor are longitudinally separated from each other by at least a portion of the expandable element.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Inventors: Dan Wittenberger, Rachid Mahrouche
  • Publication number: 20210085381
    Abstract: A system and method for providing greater control over the temperature of a thermal treatment element of a medical device, enabling an operator to extend a thawing period of a cryoablation procedure. The system may include a fluid flow path that bypasses a subcooler, giving the operator selective control over the temperature of refrigerant delivered to the treatment element and, therefore, treatment element temperature. Additionally or alternatively, the system may include a fluid delivery conduit that is in communication with a liquid refrigerant and a gaseous refrigerant. Adjustment of the ratio of liquid to gaseous refrigerant also offers control over the treatment element temperature. Additionally or alternatively, the system may include one or more valves and/or heating elements in the fluid delivery and recovery conduits to control the treatment element temperature.
    Type: Application
    Filed: December 3, 2020
    Publication date: March 25, 2021
    Inventors: Rachid Mahrouche, Dan Wittenberger
  • Patent number: 10952791
    Abstract: A medical system, comprising an ablation catheter is disclosed. The ablation catheter includes an elongate shaft with a proximal end, a distal end and a lumen disposed between the proximal end and the distal end. The ablation catheter also includes an expandable element in fluid communication with the lumen, a first temperature sensor operable to measure a first temperature; and a second temperature sensor operable to measure a second temperature. The first temperature sensor and the second temperature sensor are longitudinally separated from each other by at least a portion of the expandable element.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: March 23, 2021
    Assignee: Medtronic CryoCath LP
    Inventors: Dan Wittenberger, Rachid Mahrouche
  • Patent number: 10888367
    Abstract: A system and method for providing greater control over the temperature of a thermal treatment element of a medical device, enabling an operator to extend a thawing period of a cryoablation procedure. The system may include a fluid flow path that bypasses a subcooler, giving the operator selective control over the temperature of refrigerant delivered to the treatment element and, therefore, treatment element temperature. Additionally or alternatively, the system may include a fluid delivery conduit that is in communication with a liquid refrigerant and a gaseous refrigerant. Adjustment of the ratio of liquid to gaseous refrigerant also offers control over the treatment element temperature. Additionally or alternatively, the system may include one or more valves and/or heating elements in the fluid delivery and recovery conduits to control the treatment element temperature.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: January 12, 2021
    Inventors: Rachid Mahrouche, Dan Wittenberger
  • Publication number: 20200386456
    Abstract: A system for the recovery of expanded refrigerant from a cryotreatment system for storage and disposal may generally include first fluid flow path having a first compressor and a fluid recovery reservoir, and a closed-loop second fluid flow path having a thermal exchange device that is in thermal communication with the fluid recovery reservoir, a second compressor, and a condenser. The first fluid flow path may include a primary refrigerant from a cryotreatment system and the closed-loop second fluid flow path may contain a secondary refrigerant for cooling the primary refrigerant within the fluid recovery reservoir. The refrigerant recovery conduit may be in fluid communication with both the cryotreatment system and a medical facility scavenging system. The refrigerant recovery conduit and the cryotreatment system may be located within the same cryotreatment console.
    Type: Application
    Filed: August 24, 2020
    Publication date: December 10, 2020
    Inventors: Rachid Mahrouche, Eric Monger, Vladimir Tzonev
  • Patent number: 10788244
    Abstract: A system for the recovery of expanded refrigerant from a cryotreatment system for storage and disposal may generally include first fluid flow path having a first compressor and a fluid recovery reservoir, and a closed-loop second fluid flow path having a thermal exchange device that is in thermal communication with the fluid recovery reservoir, a second compressor, and a condenser. The first fluid flow path may include a primary refrigerant from a cryotreatment system and the closed-loop second fluid flow path may contain a secondary refrigerant for cooling the primary refrigerant within the fluid recovery reservoir. The refrigerant recovery conduit may be in fluid communication with both the cryotreatment system and a medical facility scavenging system. The refrigerant recovery conduit and the cryotreatment system may be located within the same cryotreatment console.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: September 29, 2020
    Assignee: Medtronic CryoCath LP
    Inventors: Rachid Mahrouche, Eric Monger, Vladimir Tzonev
  • Publication number: 20200261138
    Abstract: A system and method of using a source of low-pressure refrigerant for a cryotherapy procedure. The system may generally include a fluid reservoir and a fluid flow path in thermal exchange with the fluid reservoir, the fluid flow path including a thermal exchange device in thermal exchange with the fluid reservoir, a compressor in fluid communication with the thermal exchange device, a condenser, a reversing valve located between the compressor and the condenser, and an expansion valve located between the condenser and the thermal exchange device. The method may include transferring a low-pressure refrigerant to a first fluid reservoir, reducing the temperature of the refrigerant within the first fluid reservoir, increasing the temperature of the refrigerant within the first fluid reservoir, and transferring the pressurized refrigerant from the first fluid reservoir to a second fluid reservoir.
    Type: Application
    Filed: May 8, 2020
    Publication date: August 20, 2020
    Inventors: Rachid MAHROUCHE, Eric MONGER
  • Publication number: 20200253658
    Abstract: A system and kit for using a source of low-pressure refrigerant for a cryotherapy procedure and for subcooling a cryotherapy refrigerant. The system may generally include a fluid reservoir and a fluid flow path in thermal exchange with the fluid reservoir, the fluid flow path including a first thermal exchange device in thermal exchange with the fluid reservoir, a compressor in fluid communication with the first thermal exchange device, a condenser, a reversing valve located between the compressor and the condenser, a second thermal exchange device located between the reversing valve and the compressor, and an expansion valve located between the condenser and the thermal exchange device. The third thermal exchange device may be configured to be in fluid communication with the cryotherapy console and configured to place a secondary refrigerant within the first fluid flow path in thermal communication with a secondary refrigerant of the cryotherapy system.
    Type: Application
    Filed: May 1, 2020
    Publication date: August 13, 2020
    Inventors: Rachid MAHROUCHE, Eric MONGER, Vladimir TZONEV