Patents by Inventor Richard A. Willyard
Richard A. Willyard 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: 9375280Abstract: According to one aspect of the present disclosure, a microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having a proximal portion and a distal portion. The antenna assembly also comprises a sheath disposed over the feedline and the radiating portion defining a chamber around the feedline and the radiating portion. The chamber is adapted to circulate coolant fluid therethrough. The antenna assembly further includes a connection hub having cable connector coupled to the feedline, an inlet fluid port and an outlet fluid port. The connection hub includes a bypass tube configured to provide for flow of the coolant fluid from the cable connector directly to the outlet fluid port.Type: GrantFiled: October 28, 2015Date of Patent: June 28, 2016Assignee: Covidien LPInventors: Richard A. Willyard, Joseph D. Brannan
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Patent number: 9301723Abstract: An ablation system including an image database storing a plurality of computed tomography (CT) images of a luminal network and a navigation system enabling, in combination with an endoscope and the CT images, navigation of a locatable guide and an extended working channel to a point of interest. The system further includes one or more fiducial markers, placed in proximity to the point of interest and a percutaneous microwave ablation device for applying energy to the point of interest.Type: GrantFiled: March 15, 2013Date of Patent: April 5, 2016Assignee: Covidien LPInventors: Joseph D. Brannan, Casey M. Ladtkow, Darion R. Peterson, Eric W. Larson, William J. Dickhans, Richard A. Willyard, Jason A. Case
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Publication number: 20160045264Abstract: A method of manufacturing a surgical instrument includes charging a first component to a first voltage, charging a second component to a second voltage such that a pre-determined voltage differential is established between the first and second components, axially moving at least one of the first and second components relative to the other, monitoring an electrical characteristic to determine whether an axial distance between the first and second components is equal to a target axial distance, and retaining the first and second components in fixed position relative to one another once the axial distance between the first and second components is equal to the target axial distance.Type: ApplicationFiled: October 28, 2015Publication date: February 18, 2016Inventors: JAMES E. DUNNING, JOSEPH D. BRANNAN, WILLIAM O. REID, JR., DARION R. PETERSON, KAYLEN J. HALEY, RICHARD A. WILLYARD, KENLYN S. BONN
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Publication number: 20160045263Abstract: According to one aspect of the present disclosure, a microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having a proximal portion and a distal portion. The antenna assembly also comprises a sheath disposed over the feedline and the radiating portion defining a chamber around the feedline and the radiating portion. The chamber is adapted to circulate coolant fluid therethrough. The antenna assembly further includes a connection hub having cable connector coupled to the feedline, an inlet fluid port and an outlet fluid port. The connection hub includes a bypass tube configured to provide for flow of the coolant fluid from the cable connector directly to the outlet fluid port.Type: ApplicationFiled: October 28, 2015Publication date: February 18, 2016Inventors: RICHARD A. WILLYARD, JOSEPH D. BRANNAN
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Publication number: 20160045258Abstract: A microwave ablation system includes an antenna assembly configured to deliver microwave energy from an energy source to tissue and a coolant source operably coupled to the energy source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the energy source and a piezoelectric transducer operably coupled to the fluid path to detect a force of fluid flow through the fluid path. The piezoelectric transducer is configured to generate a signal based on the detected force of fluid through the fluid path. The controller is configured to control the energy source output based on the generated signal.Type: ApplicationFiled: October 27, 2015Publication date: February 18, 2016Inventors: RICHARD A. WILLYARD, JOSEPH D. BRANNAN
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Publication number: 20160038232Abstract: A method of manufacturing a microwave ablation device, the method including applying a balun short circumferentially about an outer conductor of a coaxial feedline and applying a dielectric material circumferentially about the outer conductor of the coaxial feedline and in contact with the balun short to form a balun. The method further including extending a temperature sensor along the coaxial feedline such that the sensor contacts the balun short, securing the temperature sensor to the coaxial feedline with a first heat shrink material, and securing the dielectric material, balun short, and temperature sensor in contact with each other and to the coaxial feedline using a second heat shrink material.Type: ApplicationFiled: October 20, 2015Publication date: February 11, 2016Inventors: JOSEPH D. BRANNAN, CASEY M. LADTKOW, DARION R. PETERSON, ERIC W. LARSON, WILLIAM J. DICKHANS, RICHARD A. WILLYARD, JASON A. CASE
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Publication number: 20160030112Abstract: A microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating section coupled to the feedline, the radiating section including a dipole antenna and a tubular dielectric loading disposed about the dipole antenna.Type: ApplicationFiled: July 21, 2015Publication date: February 4, 2016Inventors: Joseph D. Brannan, Kenlyn S. Bonn, Richard A. Willyard
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Publication number: 20150366615Abstract: A microwave ablation device including a cable assembly configured to connect a microwave ablation device to an energy source and a feedline in electrical communication with the cable assembly. The microwave ablation device further includes a balun on an outer conductor of the feedline, and a temperature sensor on the balun sensing the temperature of the balun.Type: ApplicationFiled: September 1, 2015Publication date: December 24, 2015Inventors: JOSEPH D. BRANNAN, CASEY M. LADTKOW, DARION R. PETERSON, ERIC W. LARSON, WILLIAM J. DICKHANS, RICHARD A. WILLYARD, JASON A. CASE
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Patent number: 9198725Abstract: According to one aspect of the present disclosure, a microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having a proximal portion and a distal portion. The antenna assembly also comprises a sheath disposed over the feedline and the radiating portion defining a chamber around the feedline and the radiating portion. The chamber is adapted to circulate coolant fluid therethrough. The antenna assembly further includes a connection hub having cable connector coupled to the feedline, an inlet fluid port and an outlet fluid port. The connection hub includes a bypass tube configured to provide for flow of the coolant fluid from the cable connector directly to the outlet fluid port.Type: GrantFiled: March 17, 2015Date of Patent: December 1, 2015Assignee: Covidien LPInventors: Richard A. Willyard, Joseph D. Brannan
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Patent number: 9192439Abstract: A method of manufacturing a surgical instrument includes charging a first component to a first voltage, charging a second component to a second voltage such that a pre-determined voltage differential is established between the first and second components, axially moving at least one of the first and second components relative to the other, monitoring an electrical characteristic to determine whether an axial distance between the first and second components is equal to a target axial distance, and retaining the first and second components in fixed position relative to one another once the axial distance between the first and second components is equal to the target axial distance.Type: GrantFiled: June 3, 2013Date of Patent: November 24, 2015Assignee: Covidien LPInventors: James E. Dunning, Joseph D. Brannan, William O. Reid, Jr., Darion R. Peterson, Kaylen J. Haley, Richard A. Willyard, Kenlyn S. Bonn
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Patent number: 9192436Abstract: A microwave ablation system includes an antenna assembly configured to deliver microwave energy from an energy source to tissue and a coolant source operably coupled to the energy source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the energy source and a piezoelectric transducer operably coupled to the fluid path to detect a force of fluid flow through the fluid path. The piezoelectric transducer is configured to generate a signal based on the detected force of fluid through the fluid path. The controller is configured to control the energy source output based on the generated signal.Type: GrantFiled: May 25, 2010Date of Patent: November 24, 2015Assignee: Covidien LPInventors: Richard A. Willyard, Joseph D. Brannan
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Patent number: 9161814Abstract: A method of manufacturing a microwave ablation device, the method including applying a balun short circumferentially about an outer conductor of a coaxial feedline and applying a dielectric material circumferentially about the outer conductor of the coaxial feedline and in contact with the balun short to form a balun. The method further including extending a temperature sensor along the coaxial feedline such that the sensor contacts the balun short, securing the temperature sensor to the coaxial feedline with a first heat shrink material, and securing the dielectric material, balun short, and temperature sensor in contact with each other and to the coaxial feedline using a second heat shrink material.Type: GrantFiled: March 15, 2013Date of Patent: October 20, 2015Assignee: Covidien LPInventors: Joseph D. Brannan, Casey M. Ladtkow, Darion R. Peterson, Eric W. Larson, William J. Dickhans, Richard A. Willyard, Jason A. Case
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Patent number: 9119650Abstract: A microwave ablation device including a cable assembly configured to connect a microwave ablation device to an energy source and a feedline in electrical communication with the cable assembly. The microwave ablation device further includes a balun on an outer conductor of the feedline, and a temperature sensor on the balun sensing the temperature of the balun.Type: GrantFiled: March 15, 2013Date of Patent: September 1, 2015Assignee: Covidien LPInventors: Joseph D. Brannan, Casey M. Ladtkow, Darion R. Peterson, Eric W. Larson, William J. Dickhans, Richard A. Willyard, Jason A. Case
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Patent number: 9113932Abstract: According to one aspect of the present disclosure, a microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having a proximal portion and a distal portion. The antenna assembly also comprises a sheath disposed over the feedline and the radiating portion defining a chamber around the feedline and the radiating portion. The chamber is adapted to circulate coolant fluid therethrough. The antenna assembly further includes a connection hub having cable connector coupled to the feedline, an inlet fluid port and an outlet fluid port. The connection hub includes a bypass tube configured to provide for flow of the coolant fluid from the cable connector directly to the outlet fluid port.Type: GrantFiled: July 23, 2014Date of Patent: August 25, 2015Assignee: Covidien LPInventors: Richard A. Willyard, Joseph D. Brannan
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Patent number: 9113924Abstract: A microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating section coupled to the feedline, the radiating section including a dipole antenna and a tubular dielectric loading disposed about the dipole antenna.Type: GrantFiled: October 17, 2008Date of Patent: August 25, 2015Assignee: Covidien LPInventors: Joseph D. Brannan, Kenlyn S. Bonn, Richard A. Willyard
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Publication number: 20150223881Abstract: According to one aspect of the present disclosure, a microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having a proximal portion and a distal portion. The antenna assembly also comprises a sheath disposed over the feedline and the radiating portion defining a chamber around the feedline and the radiating portion. The chamber is adapted to circulate coolant fluid therethrough. The antenna assembly further includes a connection hub having cable connector coupled to the feedline, an inlet fluid port and an outlet fluid port. The connection hub includes a bypass tube configured to provide for flow of the coolant fluid from the cable connector directly to the outlet fluid port.Type: ApplicationFiled: July 23, 2014Publication date: August 13, 2015Inventors: RICHARD A. WILLYARD, Joseph D. Brannan
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Publication number: 20150190197Abstract: According to one aspect of the present disclosure, a microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having a proximal portion and a distal portion. The antenna assembly also comprises a sheath disposed over the feedline and the radiating portion defining a chamber around the feedline and the radiating portion. The chamber is adapted to circulate coolant fluid therethrough. The antenna assembly further includes a connection hub having cable connector coupled to the feedline, an inlet fluid port and an outlet fluid port. The connection hub includes a bypass tube configured to provide for flow of the coolant fluid from the cable connector directly to the outlet fluid port.Type: ApplicationFiled: March 17, 2015Publication date: July 9, 2015Inventors: RICHARD A. WILLYARD, JOSEPH D. BRANNAN
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Publication number: 20150150627Abstract: An electrosurgical system includes an electrosurgical device, one or more temperature sensors associated with the electrosurgical device, a fluid-flow path leading to the electrosurgical device, and a flow-control device disposed in fluid communication with the fluid-flow path. The electrosurgical device includes a probe for directing energy to tissue. The electrosurgical system includes circuitry for detecting bending of the probe. The circuitry alerts the user of excessive bending by activating an alarm, such as an audible alarm, lighting one or more LEDs or other light sources, tactile feedback, or any other means. The electrosurgical system further includes a processor unit communicatively-coupled to the one or more temperature sensors and communicatively-coupled to the flow-control device. The processor unit is configured to control the flow-control device based on determination of a desired fluid-flow rate using one or more electrical signals outputted from the one or more temperature sensors.Type: ApplicationFiled: January 19, 2015Publication date: June 4, 2015Inventors: JOSEPH D. BRANNAN, RICHARD A. WILLYARD
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Patent number: 8945113Abstract: An electrosurgical system includes an electrosurgical device, one or more temperature sensors associated with the electrosurgical device, a fluid-flow path leading to the electrosurgical device, and a flow-control device disposed in fluid communication with the fluid-flow path. The electrosurgical device includes a probe for directing energy to tissue. The electrosurgical system includes circuitry for detecting bending of the probe. The circuitry alerts the user of excessive bending by activating an alarm, such as an audible alarm, lighting one or more LEDs or other light sources, tactile feedback, or any other means. The electrosurgical system further includes a processor unit communicatively-coupled to the one or more temperature sensors and communicatively-coupled to the flow-control device. The processor unit is configured to control the flow-control device based on determination of a desired fluid-flow rate using one or more electrical signals outputted from the one or more temperature sensors.Type: GrantFiled: April 5, 2012Date of Patent: February 3, 2015Assignee: Covidien LPInventors: Joseph D. Brannan, Richard A. Willyard
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Patent number: 8894640Abstract: An electrosurgical system includes an electrosurgical device adapted to direct energy to tissue and a fluid path leading to the electrosurgical device. The system also includes an optical sensor unit operably associated with the fluid path. The optical sensor unit includes a light-emitting element to generate light output and a light-receiving element to collect light outputted from the light-emitting element. The light-emitting element and the light-receiving element are disposed such that light output from the light-emitting element passes through the fluid path to the light-receiving element. The optical sensor unit is capable of detecting an air bubble in the fluid path passing through the optical sensor unit using a sensed characteristic of light collected at the light-receiving element.Type: GrantFiled: March 8, 2013Date of Patent: November 25, 2014Assignee: Covidien LPInventors: Richard A. Willyard, Joseph D. Brannan