Patents by Inventor Chadi Harmouche
Chadi Harmouche 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).
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Patent number: 8696656Abstract: A method of treating tissue is provided, including positioning a portion of a catheter in proximity to cardiac tissue; measuring an impedance value with the catheter; determining a respiratory rate based at least in part on the measured impedance value; and thermally treating the cardiac tissue with the catheter.Type: GrantFiled: January 19, 2009Date of Patent: April 15, 2014Assignee: Medtronic Cryocath LPInventors: Marwan Abboud, Johnny Al Asmar, Chadi Harmouche
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Patent number: 8545491Abstract: A system and method for controlling the inflation, ablation, and deflation of a balloon catheter. The system includes a balloon catheter, a console, having a pressurized gas or liquid inflation source, and an umbilical system to deliver pressurized coolant to the balloon catheter. The system comprises a PID (Proportional Integral Derivative) controller or other pressure-sensing device 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. In one embodiment, an intermediate console is placed between the console and the balloon catheter and coupled thereto.Type: GrantFiled: December 13, 2005Date of Patent: October 1, 2013Assignee: Medtronic CryoCath LPInventors: Marwan Abboud, Rachid Mahrouche, Teresa Mihalik, Chadi Harmouche, Eric Monger
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Patent number: 8491636Abstract: 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: GrantFiled: October 16, 2006Date of Patent: July 23, 2013Assignee: Medtronic Cryopath LPInventors: Marwan Abboud, Rachid Mahrouche, Teresa Ann Mihalik, Chadi Harmouche, Gilles Desrochers
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Patent number: 8382747Abstract: 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: GrantFiled: October 18, 2007Date of Patent: February 26, 2013Assignee: Medtronic Cryocath LPInventors: Marwan Abboud, Rachid Mahrouche, Chadi Harmouche, Teresa Mihalik, Gilles Desrochers
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Publication number: 20120271291Abstract: The present invention provides a medical device having an elongate body with both a proximal end and a distal end, wherein the elongate body defines an intake lumen and an exhaust lumen. The medical device also has a first pliable element defining a cooling chamber disposed at a point along the elongate body, with the cooling chamber being in fluid communication with the intake lumen and the exhaust lumen. A second pliable element is provided which at least partially encloses the first pliable element, thereby defining a junction between the first and second pliable element. A check valve is included which is in fluid communication with the junction between the first pliable element and second pliable element, the valve further being in fluid communication with the exhaust lumen. Additionally, the medical device may include sensors or other monitoring means in fluid communication with the junction and the cooling chamber.Type: ApplicationFiled: June 19, 2012Publication date: October 25, 2012Applicant: MEDTRONIC CRYOCATH LPInventors: Marwan ABBOUD, Rachid MAHROUCHE, Teresa Ann MIHALIK, Chadi HARMOUCHE, Jean-Luc PAGEARD, John W. LEHMANN
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Patent number: 8225643Abstract: The present invention provides a medical device having an elongate body with both a proximal end and a distal end, wherein the elongate body defines an intake lumen and an exhaust lumen. The medical device also has a first pliable element defining a cooling chamber disposed at a point along the elongate body, with the cooling chamber being in fluid communication with the intake lumen and the exhaust lumen. A second pliable element is provided which at least partially encloses the first pliable element, thereby defining a junction between the first and second pliable element. Moreover, a check valve is included which is in fluid communication with the junction between the first pliable element and second pliable element, the valve further being in fluid communication with the exhaust lumen. In addition, the medical device may include sensors or other monitoring means in fluid communication with the junction and the cooling chamber.Type: GrantFiled: May 22, 2008Date of Patent: July 24, 2012Assignee: Medtronic Cryocath LPInventors: Marwan Abboud, Rachid Mahrouche, Teresa Ann Mihalik, Chadi Harmouche, Jean-Luc Pageard, John W. Lehmann
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Patent number: 8206345Abstract: The present invention provides a medical device having an elongate body with both a proximal end and a distal end, wherein the elongate body defines an intake lumen and an exhaust lumen. The medical device also has a first pliable element defining a cooling chamber disposed at a point along the elongate body, with the cooling chamber being in fluid communication with the intake lumen and the exhaust lumen. A second pliable element is provided which at least partially encloses the first pliable element, thereby defining a junction between the first and second pliable element. Moreover, a check valve is included which is in fluid communication with the junction between the first pliable element and second pliable element, the valve further being in fluid communication with the exhaust lumen. In addition, the medical device may include sensors or other monitoring means in fluid communication with the junction and the cooling chamber.Type: GrantFiled: March 7, 2005Date of Patent: June 26, 2012Assignee: Medtronic Cryocath LPInventors: Marwan Abboud, Rachid Mahrouche, Teresa Ann Mihalik, Chadi Harmouche, Jean-Luc Pageard, John W. Lehmann
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Patent number: 7914525Abstract: Methods and systems for detecting fluid egress, assessing lesion quality, determining tissue composition or structure, determining ice coverage of catheter tip and providing tissue contact assessment, by providing a catheter having a shaft with a proximal end portion and a distal end portion, the proximal end portion and the distal end portion define at least one fluid pathway therebetween with the shaft having a plurality of electrodes, positioning the catheter at a tissue treatment site, applying an electrical current between at least two of the plurality of electrodes, measuring impedance voltage between the at least two of the plurality of electrodes and, processing the measured impedance voltage caused by the applied electrical current to determine if fluid egress is present, to assess lesion quality, to determine tissue composition, ice cover of catheter tip, and to provide contact assessment.Type: GrantFiled: April 25, 2008Date of Patent: March 29, 2011Assignee: Medtronic Cryocath LPInventors: Marwan Abboud, Johnny Al Asmar, Chadi Harmouche
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Patent number: 7842031Abstract: Methods and systems for detecting fluid egress, assessing lesion quality, determining tissue composition or structure, determining ice coverage of catheter tip and providing tissue contact assessment, by providing a catheter having a shaft with a proximal end portion and a distal end portion, the proximal end portion and the distal end portion define at least one fluid pathway therebetween with the shaft having a plurality of electrodes, positioning the catheter at a tissue treatment site, applying an electrical current between at least two of the plurality of electrodes, measuring impedance voltage between the at least two of the plurality of electrodes and, processing the measured impedance voltage caused by the applied electrical current to determine if fluid egress is present, to assess lesion quality, to determine tissue composition, ice cover of catheter tip, and to provide contact assessment.Type: GrantFiled: November 18, 2005Date of Patent: November 30, 2010Assignee: Medtronic Cryocath LPInventors: Marwan Abboud, Johnny Al Asmar, Chadi Harmouche
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Patent number: 7727228Abstract: A system and method for controlling the inflation, ablation, and deflation of a balloon catheter is provided. The system includes a balloon catheter, a console having a pressurized gas or liquid inflation source, and an umbilical system to deliver pressurized coolant to the balloon catheter. The system comprises a PID (Proportional Integral Derivative) controller or other pressure-sensing device 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: GrantFiled: March 23, 2004Date of Patent: June 1, 2010Assignee: Medtronic Cryocath LPInventors: Marwan Abboud, Rachid Mahrouche, Teresa Ann Mihalik, Chadi Harmouche, Eric Monger
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Publication number: 20090182318Abstract: A method of treating tissue is provided, including positioning a portion of a catheter in proximity to cardiac tissue; measuring an impedance value with the catheter; determining a respiratory rate based at least in part on the measured impedance value; and thermally treating the cardiac tissue with the catheter.Type: ApplicationFiled: January 19, 2009Publication date: July 16, 2009Applicant: CRYOCATH TECHNOLOGIES INC.Inventors: Marwan ABBOUD, Johnny Al ASMAR, Chadi HARMOUCHE
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Publication number: 20090030288Abstract: A medical apparatus and system for determining contact assessment includes a catheter having an elongate body having a proximal end, a distal end opposite the proximal end, and defining an injection lumen and an exhaust lumen, an expandable membrane defining a cooling chamber disposed at a point along the elongate body, the cooling chamber in fluid communication with the injection lumen and the exhaust lumen, and a contact assessment element which may be a temperature sensor located proximate the coolant return lumen for measuring an internal temperature of the chamber. The system may include the catheter, a console having a fluid supply, an exhaust path and at least one control mechanism operationally coupled to the temperature sensor for processing a temperature signal received from the temperature sensor. The apparatus and system can also have multiple electrodes to measure and process various impedances to determine contact assessment.Type: ApplicationFiled: October 3, 2008Publication date: January 29, 2009Applicant: CRYOCATH TECHNOLOGIES INC.Inventors: Marwan Abboud, Teresa Ann Mihalik, Johnny Al Asmar, Chadi Harmouche
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Patent number: 7442190Abstract: A method and system for determining contact assessment includes the steps of positioning a catheter at a tissue treatment site, where the catheter has a proximal end portion and a distal end portion, the proximal end portion defining at least one fluid inlet port and at least one fluid outlet port, an expandable membrane defining a cooling chamber a coolant injection lumen in fluid communication with the at least one fluid inlet port and the cooling chamber, a coolant return lumen in fluid communication with the at least one fluid outlet port and the cooling chamber, the coolant injection tube, the cooling chamber, and the primary coolant return lumen defining a fluid pathway and a temperature sensor located near the coolant return lumen; measuring an internal temperature of the chamber, and modifying the position of the catheter in response to the measured temperature. The method and system can also use a measured impedance to determine contact assessment.Type: GrantFiled: May 13, 2005Date of Patent: October 28, 2008Assignee: CryoCath Technologies Inc.Inventors: Marwan Abbound, Teresa Ann Mihalik, Johnny Al Asmar, Chadi Harmouche
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Publication number: 20080221508Abstract: The present invention provides a medical device having an elongate body with both a proximal end and a distal end, wherein the elongate body defines an intake lumen and an exhaust lumen. The medical device also has a first pliable element defining a cooling chamber disposed at a point along the elongate body, with the cooling chamber being in fluid communication with the intake lumen and the exhaust lumen. A second pliable element is provided which at least partially encloses the first pliable element, thereby defining a junction between the first and second pliable element. Moreover, a check valve is included which is in fluid communication with the junction between the first pliable element and second pliable element, the valve further being in fluid communication with the exhaust lumen. In addition, the medical device may include sensors or other monitoring means in fluid communication with the junction and the cooling chamber.Type: ApplicationFiled: May 22, 2008Publication date: September 11, 2008Applicant: CryoCath Technologies Inc.Inventors: Marwan Abboud, Rachid Mahrouche, Teresa Ann Mihalik, Chadi Harmouche, Jean-Luc Pageard, John W. Lehmann
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Publication number: 20080200828Abstract: Methods and systems for detecting fluid egress, assessing lesion quality, determining tissue composition or structure, determining ice coverage of catheter tip and providing tissue contact assessment, by providing a catheter having a shaft with a proximal end portion and a distal end portion, the proximal end portion and the distal end portion define at least one fluid pathway therebetween with the shaft having a plurality of electrodes, positioning the catheter at a tissue treatment site, applying an electrical current between at least two of the plurality of electrodes, measuring impedance voltage between the at least two of the plurality of electrodes and, processing the measured impedance voltage caused by the applied electrical current to determine if fluid egress is present, to assess lesion quality, to determine tissue composition, ice cover of catheter tip, and to provide contact assessment.Type: ApplicationFiled: April 25, 2008Publication date: August 21, 2008Applicant: CRYOCATH TECHNOLOGIES INC.Inventors: Marwan ABBOUD, Johnny AL ASMAR, Chadi HARMOUCHE
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Publication number: 20080200829Abstract: Methods and systems for detecting fluid egress, assessing lesion quality, determining tissue composition or structure, determining ice coverage of catheter tip and providing tissue contact assessment, by providing a catheter having a shaft with a proximal end portion and a distal end portion, the proximal end portion and the distal end portion define at least one fluid pathway therebetween with the shaft having a plurality of electrodes, positioning the catheter at a tissue treatment site, applying an electrical current between at least two of the plurality of electrodes, measuring impedance voltage between the at least two of the plurality of electrodes and, processing the measured impedance voltage caused by the applied electrical current to determine if fluid egress is present, to assess lesion quality, to determine tissue composition, ice cover of catheter tip, and to provide contact assessment.Type: ApplicationFiled: April 25, 2008Publication date: August 21, 2008Applicant: CryoCath Technologies Inc.Inventors: Marwan Abboud, Johnny Al Asmar, Chadi Harmouche
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Publication number: 20080039791Abstract: 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: ApplicationFiled: October 18, 2007Publication date: February 14, 2008Applicant: CryoCath Technologies Inc.Inventors: Marwan Abboud, Rachid MAHROUCHE, Chadi HARMOUCHE, Teresa MIHALIK, Gilles DESROCHERS
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Publication number: 20080009925Abstract: A system and method for controlling the inflation, ablation, and deflation of a balloon catheter. The system includes a balloon catheter, a console, having a pressurized gas or liquid inflation source, and an umbilical system to deliver pressurized coolant to the balloon catheter. The system comprises a PID (Proportional Integral Derivative) controller or other pressure-sensing device 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. In one embodiment, an intermediate console is placed between the console and the balloon catheter and coupled thereto.Type: ApplicationFiled: September 24, 2007Publication date: January 10, 2008Applicant: CRYOCATH TECHNOLOGIES INC.Inventors: Marwan ABBOUD, Rachid MAHROUCHE, Teresa MIHALIK, Chadi HARMOUCHE, Eric MONGER
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Publication number: 20070255162Abstract: Methods and systems for detecting fluid egress, assessing lesion quality, determining tissue composition or structure, determining ice coverage of catheter tip and providing tissue contact assessment, by providing a catheter having a shaft with a proximal end portion and a distal end portion, the proximal end portion and the distal end portion define at least one fluid pathway therebetween with the shaft having a plurality of electrodes, positioning the catheter at a tissue treatment site, applying an electrical current between at least two of the plurality of electrodes, measuring impedance voltage between the at least two of the plurality of electrodes and, processing the measured impedance voltage caused by the applied electrical current to determine if fluid egress is present, to assess lesion quality, to determine tissue composition, ice cover of catheter tip, and to provide contact assessment.Type: ApplicationFiled: November 18, 2005Publication date: November 1, 2007Inventors: Marwan Abboud, Johnny Asmar, Chadi Harmouche
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Publication number: 20070032783Abstract: 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: ApplicationFiled: October 16, 2006Publication date: February 8, 2007Inventors: Marwan Abboud, Rachid Mahrouche, Chadi Harmouche, Teresa Mihalik, Gilles Desrochers