Patents by Inventor Vladimir Tzonev
Vladimir Tzonev 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: 11648044Abstract: 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: GrantFiled: May 1, 2020Date of Patent: May 16, 2023Assignee: Medtronic CryoCath LPInventors: Rachid Mahrouche, Eric Monger, Vladimir Tzonev
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Publication number: 20210369322Abstract: 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: ApplicationFiled: August 17, 2021Publication date: December 2, 2021Inventors: Stephane Moreau, Rachid Mahrouche, Eric Monger, Nadine Nahoul, Vladimir Tzonev
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Publication number: 20210338303Abstract: 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: ApplicationFiled: July 14, 2021Publication date: November 4, 2021Inventors: Jean-Pierre LALONDE, Scott A. HARELAND, Jay L. KELLEY, Rachid MAHROUCHE, Wlodzimierz SADZYNSKI, Megan M. SCHMIDT, Bertin SIMEON, Vladimir TZONEV
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Patent number: 11123126Abstract: 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: GrantFiled: October 4, 2019Date of Patent: September 21, 2021Inventors: Stephane Moreau, Rachid Mahrouche, Eric Monger, Nadine Nahoul, Vladimir Tzonev
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Patent number: 11090101Abstract: 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: GrantFiled: May 2, 2018Date of Patent: August 17, 2021Assignee: Medtronic CryoCath LPInventors: Jean-Pierre Lalonde, Scott A. Hareland, Jay L. Kelley, Rachid Mahrouche, Wlodzimierz Sadzynski, Megan M. Schmidt, Bertin Simeon, Vladimir Tzonev
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Publication number: 20200386456Abstract: 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: ApplicationFiled: August 24, 2020Publication date: December 10, 2020Inventors: Rachid Mahrouche, Eric Monger, Vladimir Tzonev
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Patent number: 10788244Abstract: 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: GrantFiled: February 1, 2016Date of Patent: September 29, 2020Assignee: Medtronic CryoCath LPInventors: Rachid Mahrouche, Eric Monger, Vladimir Tzonev
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Publication number: 20200253658Abstract: 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: ApplicationFiled: May 1, 2020Publication date: August 13, 2020Inventors: Rachid MAHROUCHE, Eric MONGER, Vladimir TZONEV
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Patent number: 10675078Abstract: 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: GrantFiled: August 1, 2019Date of Patent: June 9, 2020Assignee: Medtronic CryoCath LPInventors: Rachid Mahrouche, Eric Monger, Vladimir Tzonev
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Publication number: 20200030017Abstract: 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: ApplicationFiled: October 4, 2019Publication date: January 30, 2020Inventors: Stephane MOREAU, Rachid MAHROUCHE, Eric MONGER, Nadine NAHOUL, Vladimir TZONEV
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Publication number: 20190350635Abstract: 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: ApplicationFiled: August 1, 2019Publication date: November 21, 2019Inventors: Rachid MAHROUCHE, Eric MONGER, Vladimir TZONEV
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Publication number: 20190336192Abstract: 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: ApplicationFiled: May 2, 2018Publication date: November 7, 2019Inventors: Jean-Pierre LALONDE, Scott A. HARELAND, Jay L. KELLEY, Rachid MAHROUCHE, Wlodzimierz SADZYNSKI, Megan M. SCHMIDT, Bertin SIMEON, Vladimir TZONEV
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Patent number: 10463417Abstract: 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: GrantFiled: September 17, 2014Date of Patent: November 5, 2019Assignee: Medtronic Cryocath LPInventors: Stephane Moreau, Rachid Mahrouche, Eric Monger, Nadine Nahoul, Vladimir Tzonev
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Patent number: 10433894Abstract: 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: GrantFiled: February 1, 2016Date of Patent: October 8, 2019Assignee: Medtronic CryoCath LPInventors: Rachid Mahrouche, Eric Monger, Vladimir Tzonev
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Publication number: 20170219261Abstract: 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: ApplicationFiled: February 1, 2016Publication date: August 3, 2017Inventors: Rachid MAHROUCHE, Eric MONGER, Vladimir TZONEV
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Publication number: 20170000544Abstract: 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: ApplicationFiled: February 1, 2016Publication date: January 5, 2017Inventors: Rachid MAHROUCHE, Eric MONGER, Vladimir TZONEV
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Patent number: 9522030Abstract: A method for purging a cryotreatment system, in particular, for clearing moisture and thus preventing ice blockages within a fluid flow path that may be formed when moisture pockets within the fluid flow path of the system are encountered by a first injection of refrigerant at the beginning of a cryotreatment procedure. The method may include injecting refrigerant from a refrigerant source into a fluid delivery conduit at a preselected pressure for a first period of time, the refrigerant flowing from the fluid delivery conduit through a fluid injection element and into a fluid recovery conduit, and evacuating refrigerant from the fluid recovery conduit by vacuum pressure generated by the vacuum pump for a second period of time. This method may be repeated for a plurality of cycles.Type: GrantFiled: January 23, 2013Date of Patent: December 20, 2016Assignee: Medtronic CryoCath LPInventors: Chadi Harmouche, Rachid Mahrouche, Eric Monger, Bertin Siméon, Vladimir Tzonev
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Publication number: 20160074089Abstract: 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: ApplicationFiled: September 17, 2014Publication date: March 17, 2016Inventors: Stephane MOREAU, Rachid MAHROUCHE, Eric MONGER, Nadine Nahoul, Vladimir TZONEV
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Patent number: 9211393Abstract: The present invention may include a medical device having a handle, a catheter coupled to the handle, and an expandable element coupled to the catheter. The medical device may also include first and second elongate bodies that traverse a length of the handle and the catheter. A housing may be disposed within the handle, with the housing defining a first opening able to receive a portion of the first elongate body, a second opening able to receive a portion of the second elongate body, and a third opening opposite the first and second openings able to receive a portion of both the first and second elongate bodies. A separation element may be disposed within the housing, with the separation element defining a path able to receive a portion of the second elongate body, and whereby a portion of the first elongate body forms a loop around the separation element.Type: GrantFiled: June 28, 2006Date of Patent: December 15, 2015Assignee: Medtronic CryoCath LPInventors: Yixin Hu, Vladimir Tzonev, Teresa Ann Mihalik, Benoit Thibault, Dan Wittenberger, Miriam Lane, Cristian Petre
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Publication number: 20140207131Abstract: A method for purging a cryotreatment system, in particular, for clearing moisture and thus preventing ice blockages within a fluid flow path that may be formed when moisture pockets within the fluid flow path of the system are encountered by a first injection of refrigerant at the beginning of a cryotreatment procedure. The method may include injecting refrigerant from a refrigerant source into a fluid delivery conduit at a preselected pressure for a first period of time, the refrigerant flowing from the fluid delivery conduit through a fluid injection element and into a fluid recovery conduit, and evacuating refrigerant from the fluid recovery conduit by vacuum pressure generated by the vacuum pump for a second period of time. This method may be repeated for a plurality of cycles.Type: ApplicationFiled: January 23, 2013Publication date: July 24, 2014Applicant: MEDTRONIC CRYOCATH LPInventors: Chadi HARMOUCHE, Rachid MAHROUCHE, Eric MONGER, Bertin SIMÉON, Vladimir TZONEV