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Medtronic Cryocath Lp patents


Recent patent applications related to Medtronic Cryocath Lp. Medtronic Cryocath Lp is listed as an Agent/Assignee. Note: Medtronic Cryocath Lp may have other listings under different names/spellings. We're not affiliated with Medtronic Cryocath Lp, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "M" | Medtronic Cryocath Lp-related inventors


Cryoballoon contact assessment using capacitive or resistive sensors

Devices, systems, and methods for assessing contact between a treatment element and an area of target tissue using resistive-type and/or capacitive-type contact sensing elements. In one embodiment, a medical system for determining tissue contact includes an elongate body including a distal portion and a proximal portion and a treatment element coupled to the elongate body distal portion. ... Medtronic Cryocath Lp

Multi-lobe balloon for cryoablation

A cryotreatment catheter for treating tissue. The catheter may include an outer elongate body, a balloon treatment element coupled to the distal portion of the elongate body with a plurality of balloon lobes radially arranged around the outer elongate body, an inner elongate body rotatably movable within the lumen of the outer elongate body, and a fluid delivery lumen located within the lumen of the outer elongate body and at least partially within the lumen of the inner elongate body. ... Medtronic Cryocath Lp

Method for applying conductors to catheter based balloons

The present invention advantageously provides a molding device with conductive material for creating a catheter balloon with conductive elements, and methods and systems for manufacturing the catheter balloon with conductive elements. An exemplary method for coupling a plurality of conductive elements to an expandable element may include placing a first portion of a mold proximate a second portion of the mold to define a casting cavity. ... Medtronic Cryocath Lp

Thermocouple-controlled catheter cooling system

The present invention provides a medical system, including a catheter defining an injection lumen, a chamber in fluid communication with the injection lumen, and an exhaust lumen in fluid communication with the chamber; a first temperature sensor positioned in the exhaust lumen proximal to the chamber; a second temperature sensor positioned in the chamber; and a console in electrical communication with the first and second temperature sensors, the controller modifying coolant flow through the medical device based at least in part upon a signal received from the first and second temperature sensor. The system may further include a thermally-conductive element circumscribing a substantial portion of the exhaust lumen proximal to the chamber, where the first temperature sensor is mounted to the thermally-conductive element, and the thermally-conductive element may include at least one of a braid, coil, and band.. ... Medtronic Cryocath Lp

Processes and methods for conductive elements on catheter elements used for tissue sensing and cryogenic ablation

A method, system and device for securing conductive material on catheter elements for tissue sensing and cryogenic ablation. This may be used to deposit or embed conductive material onto or within polymeric materials. ... Medtronic Cryocath Lp

Highly flexible mapping and treatment device

A device and system for providing mapping and treatment capabilities without increasing stiffness of the device. An embodiment of a device may include a flexible elongate body and at least one mapping element on the distal portion of the elongate body. ... Medtronic Cryocath Lp

Contrast agent to assess quality of occlusion through impedance measurement

A method, system, and device for predicting lesion quality. Specifically, lesion quality may be predicted based on an assessment of pulmonary vein occlusion using injection of an impedance-modifying agent and evaluation of changes in impedance measurements recorded by an electrode located distal to an occlusion element of the treatment device used to inject the impedance-modifying agent. ... Medtronic Cryocath Lp

Cryoablation method and system

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. ... Medtronic Cryocath Lp

N2o thermal pressurization system by cooling

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. ... Medtronic Cryocath Lp

Accessory to allow sensing at balloon interface

A device, system and method for temperature-based lesion formation assessment and mapping functionality using an accessory usable with an over-the-wire balloon catheter. The device may include a first annular element, a plurality of wires coupled to the first annular element, and a second annular element, the plurality of wires passing from the first annular element through the second annular element and into an elongate wire conduit coupled to the second annular element. ... Medtronic Cryocath Lp

Vein occlusion assessment using temperature

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. ... Medtronic Cryocath Lp

Centering coiled guide

A device and system for providing a centered lumen within a catheter body. A coiled guide lumen (cgl) is composed of a length of wire forming a plurality of coils about the longitudinal axis of the cgl, the cgl including one or more first sections having a first diameter and one or more sections having a second diameter, the second diameter being greater than the first diameter, and a secondary guide lumen extending through the first sections. ... Medtronic Cryocath Lp

Shape changing ablation balloon

A device, method, and system for thermally affecting tissue. The device may generally include an elongate body, an actuation element slidably disposed within the elongate body, a balloon defining an interior chamber, a proximal neck, and a distal neck, the first neck being coupled to the distal portion of the elongate body and the second neck being coupled to the distal portion of the actuation element, retraction of the actuation element within the elongate body causing the treatment element to transition from a first configuration to a second configuration. ... Medtronic Cryocath Lp

Variable geometry cooling chamber

The present invention provides a medical device that may include a catheter body having proximal and distal portions, a fluid injection lumen disposed within elongate body, and a guidewire lumen disposed within the elongate body. A tip portion defining a cavity in fluid communication with the fluid injection lumen may be coupled to the distal end of the guidewire lumen, and an expandable element may be coupled to the distal portion of the catheter body and to the tip portion, such that the expandable element is in fluid communication with the fluid injection lumen. ... Medtronic Cryocath Lp

03/08/18 / #20180064481

Mri-compatible cryocatheters and system

A system and device for cryoablation of tissue that is suitable for use within an mri environment. The device may include an elongate body, a treatment element at the distal portion of the elongate body, and one or more pull fibers. ... Medtronic Cryocath Lp

02/08/18 / #20180036517

Balloon design to reduce distal length

A device and system for thermally affecting tissue that includes a balloon catheter with a reduced distal length for ease of navigation and that also includes a balloon that is more resistant to bursting and delamination. The balloon may include a proximal neck generally attached to an elongate body and a distal neck generally attached to a shaft disposed within the elongate body. ... Medtronic Cryocath Lp

02/08/18 / #20180036057

Method and apparatus for inflating and deflating balloon catheters

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. ... Medtronic Cryocath Lp

02/01/18 / #20180028252

Cryogenic balloon device with electroporation treatment region

An intravascular ablation device, including a flexible elongate body; an expandable element positioned on the elongate body; a radiofrequency or electroporation treatment segment located distally of the expandable element; a cryogenic coolant source in fluid communication with an interior of the expandable element; and a radiofrequency or electroporation energy source in communication with the radiofrequency or electroporation treatment segment.. . ... Medtronic Cryocath Lp

12/14/17 / #20170354449

Distal balloon impedance and temperature recording to monitor pulmonary vein ablation and occlusion

A cryoablation method, system, and device that allows for real-time and accurate assessment and monitoring of pv occlusion and lesion formation without the need for expensive imaging systems and without patient exposure to radiation. The system includes a cryoballoon catheter with a cryoballoon, a distal electrode, a proximal electrode, and a temperature sensor. ... Medtronic Cryocath Lp

10/12/17 / #20170290618

Method of using time to effect (tte) to estimate the optimum cryodose to apply to a pulmonary vein

A system and method for determining the optimum dose of cryotreatment to an area of target tissue to achieve isolation based on the time to effect (tte). The system may generally include a treatment device, a sensing device, and a processor programmed to calculate the optimum dose of cryotreatment, in seconds, based on tte. ... Medtronic Cryocath Lp

08/03/17 / #20170219261

Recovery system for n20

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. ... Medtronic Cryocath Lp

06/08/17 / #20170156672

Accessory to allow sensing at balloon interface

A device, system and method for temperature-based lesion formation assessment and mapping functionality using an accessory usable with an over-the-wire balloon catheter. The device may include a first annular element, a plurality of wires coupled to the first annular element, and a second annular element, the plurality of wires passing from the first annular element through the second annular element and into an elongate wire conduit coupled to the second annular element. ... Medtronic Cryocath Lp

05/18/17 / #20170135740

Multi-lobe balloon for cryoablation

A cryotreatment catheter for treating tissue. The catheter may include an outer elongate body, a balloon treatment element coupled to the distal portion of the elongate body with a plurality of balloon lobes radially arranged around the outer elongate body, an inner elongate body rotatably movable within the lumen of the outer elongate body, and a fluid delivery lumen located within the lumen of the outer elongate body and at least partially within the lumen of the inner elongate body. ... Medtronic Cryocath Lp

04/27/17 / #20170112558

Post ablation tissue analysis technique

A device, system, and method for identifying an area of ablated tissue. Specifically, the device, system, and method may include a device having one or more fiber sensors and a processing unit for receiving emitted and/or reflected light from tissue and making one or more determinations based on the received light regarding ablated tissue, tissue contact, and/or occlusion. ... Medtronic Cryocath Lp

04/20/17 / #20170105780

Temperature and strain measurement technique during cryoablation

A device, system, and method for identifying an area of ablated tissue and/or assessing contact between a treatment element and tissue and/or assessing occlusion of a body lumen by the treatment element. Specifically, the device, system, and method may include a device having one or more fiber sensors and a processing unit for receiving emitted and/or reflected light from tissue and making one or more determinations based on the received light regarding ablated tissue, tissue contact, and/or occlusion. ... Medtronic Cryocath Lp

03/02/17 / #20170056088

Cryogenic balloon device with electroporation treatment region

An intravascular ablation device, including a flexible elongate body; an expandable element positioned on the elongate body; a radiofrequency or electroporation treatment segment located distally of the expandable element; a cryogenic coolant source in fluid communication with an interior of the expandable element; and a radiofrequency or electroporation energy source in communication with the radiofrequency or electroporation treatment segment.. . ... Medtronic Cryocath Lp

02/02/17 / #20170027630

Real-time lesion formation assessment

A method and system for creating permanent lesions in an area of target tissue, such as tissue at or proximate a junction between a pulmonary vein and the left atrium. The method may generally include positioning a medical device in contact with a pulmonary vein ostium, ablating the tissue, and recording a plurality of temperature measurements from one or more of three temperature sensors. ... Medtronic Cryocath Lp

01/05/17 / #20170000545

Spray nozzle design for a catheter

A catheter-based medical device including controlled refrigerant dispersion is disclosed. The device includes a fluid injection tube that carries refrigerant from a coolant supply to the distal portion of the device. ... Medtronic Cryocath Lp

01/05/17 / #20170000544

N2o liquefaction system with subcooling heat exchanger for medical device

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. ... Medtronic Cryocath Lp

01/05/17 / #20170000543

N2o thermal pressurization system by cooling

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. ... Medtronic Cryocath Lp

01/05/17 / #20170000362

Accessory to allow sensing at balloon interface

A device, system and method for temperature-based lesion formation assessment and mapping functionality using an accessory usable with an over-the-wire balloon catheter. The device may include a first annular element, a plurality of wires coupled to the first annular element, and a second annular element, the plurality of wires passing from the first annular element through the second annular element and into an elongate wire conduit coupled to the second annular element. ... Medtronic Cryocath Lp








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