Patents by Inventor Paul D. Corl
Paul D. Corl 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: 8419647Abstract: A method of measuring blood pressure and velocity proximally and distally of a stenosis in a vessel carrying blood includes the steps of providing a guide wire having both a pressure sensor and a velocity sensor disposed on a distal region of the guide wire, introducing the guide wire into the vessel, advancing the guide wire to position the pressure sensor and the velocity sensor proximally and distally of the stenosis, and measuring the blood pressure and velocity proximally and distally of the stenosis with the pressure sensor and the velocity sensor.Type: GrantFiled: June 27, 2011Date of Patent: April 16, 2013Assignee: Volcano CorporationInventors: Paul D. Corl, Robert Z. Obara, John E. Ortiz
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Publication number: 20110251497Abstract: A method of measuring blood pressure and velocity proximally and distally of a stenosis in a vessel carrying blood includes the steps of providing a guide wire having both a pressure sensor and a velocity sensor disposed on a distal region of the guide wire, introducing the guide wire into the vessel, advancing the guide wire to position the pressure sensor and the velocity sensor proximally and distally of the stenosis, and measuring the blood pressure and velocity proximally and distally of the stenosis with the pressure sensor and the velocity sensor.Type: ApplicationFiled: June 27, 2011Publication date: October 13, 2011Applicant: Volcano CorporationInventors: Paul D. Corl, Robert Z. Obara, John E. Ortiz
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Patent number: 7967762Abstract: A method of measuring blood pressure and velocity proximally and distally of a stenosis in a vessel carrying blood includes the steps of providing a guide wire having both a pressure sensor and a velocity sensor disposed on a distal region of the guide wire, introducing the guide wire into the vessel, advancing the guide wire to position the pressure sensor and the velocity sensor proximally and distally of the stenosis, and measuring the blood pressure and velocity proximally and distally of the stenosis with the pressure sensor and the velocity sensor.Type: GrantFiled: January 4, 2007Date of Patent: June 28, 2011Assignee: Volcano CorporationInventors: Paul D. Corl, Robert Z. Obara, John E. Ortiz
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Patent number: 7630747Abstract: An apparatus for use with a patient having a vessel carrying blood to ascertain characteristics of the blood. The apparatus includes a display module and a probe having a distal extremity adapted to be inserted into the vessel of the patient and having a proximal extremity coupled to the display module. The probe includes a sensor in the distal extremity for providing an electrical signal to the display module when the probe is disposed in the blood. The probe can have an antithrombogenic surface treatment for inhibiting the adhesion of blood components to the probe when disposed in the blood.Type: GrantFiled: September 9, 2003Date of Patent: December 8, 2009Assignee: Keimar, Inc.Inventors: Paul D. Corl, Harry D. Nguyen, Amos Gottlieb, Margaret R. Webber
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Publication number: 20080146903Abstract: An apparatus for use with a patient having a vessel carrying blood to ascertain characteristics of the blood. The apparatus includes a display module and a probe having a distal extremity adapted to be inserted into the vessel of the patient and having a proximal extremity coupled to the display module. The probe includes a sensor in the distal extremity for providing an electrical signal to the display module when the probe is disposed in the blood. The probe can have an antithrombogenic surface treatment for inhibiting the adhesion of blood components to the probe when disposed in the blood.Type: ApplicationFiled: February 7, 2008Publication date: June 19, 2008Inventors: Paul D. Corl, James D. Mikkelsen, Harry D. Nguyen, Amos Gottlieb, Margaret R. Webber
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Publication number: 20080139909Abstract: An apparatus for use with a patient having a vessel carrying blood to ascertain characteristics of the blood. The apparatus includes a display module and a probe having a distal extremity adapted to be inserted into the vessel of the patient and having a proximal extremity coupled to the display module. The probe includes a sensor in the distal extremity for providing an electrical signal to the display module when the probe is disposed in the blood. The probe can have an antithrombogenic surface treatment for inhibiting the adhesion of blood components to the probe when disposed in the blood.Type: ApplicationFiled: February 7, 2008Publication date: June 12, 2008Inventors: Paul D. Corl, James D. Mikkelsen, Harry D. Nguyen, Amos Gottlieb, Margaret R. Webber
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Publication number: 20080125633Abstract: An apparatus for use with a patient having a vessel carrying blood to ascertain characteristics of the blood. The apparatus includes a display module and a probe having a distal extremity adapted to be inserted into the vessel of the patient and having a proximal extremity coupled to the display module. The probe includes a sensor in the distal extremity for providing an electrical signal to the display module when the probe is disposed in the blood. The probe can have an antithrombogenic surface treatment for inhibiting the adhesion of blood components to the probe when disposed in the blood.Type: ApplicationFiled: February 7, 2008Publication date: May 29, 2008Inventors: Paul D. Corl, James D. Mikkelsen, Harry D. Nguyen, Amos Gottlieb, Margaret R. Webber
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Publication number: 20080125635Abstract: An apparatus for use with a patient having a vessel carrying blood to ascertain characteristics of the blood. The apparatus includes a display module and a probe having a distal extremity adapted to be inserted into the vessel of the patient and having a proximal extremity coupled to the display module. The probe includes a sensor in the distal extremity for providing an electrical signal to the display module when the probe is disposed in the blood. The probe can have an antithrombogenic surface treatment for inhibiting the adhesion of blood components to the probe when disposed in the blood.Type: ApplicationFiled: February 7, 2008Publication date: May 29, 2008Inventors: Paul D. Corl, James D. Mikkelsen, Harry D. Nguyen, Amos Gottlieb, Margaret R. Webber
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Publication number: 20080125632Abstract: An apparatus for use with a patient having a vessel carrying blood to ascertain characteristics of the blood. The apparatus includes a display module and a probe having a distal extremity adapted to be inserted into the vessel of the patient and having a proximal extremity coupled to the display module. The probe includes a sensor in the distal extremity for providing an electrical signal to the display module when the probe is disposed in the blood. The probe can have an antithrombogenic surface treatment for inhibiting the adhesion of blood components to the probe when disposed in the blood.Type: ApplicationFiled: February 7, 2008Publication date: May 29, 2008Inventors: Paul D. Corl, James D. Mikkelsen, Harry D. Nguyen, Amos Gottlieb, Margaret R. Webber
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Patent number: 7097620Abstract: A guide wire having pressure sensing capabilities for measuring the pressure of liquid in a vessel comprising a flexible elongate member and having proximal and distal extremities and having an outside diameter of 0.018? or less. The distal extremity of said flexible elongate member is adapted to be disposed in the liquid in said vessel. A housing is carried by the flexible elongate member and has a diameter substantially the same as the diameter of the flexible elongate member. The housing has a space therein with a pressure sensor mounted in the space in the housing. The pressure sensor has a diaphragm that is sensitive to changes of pressure in the liquid in the vessel. The diaphragm is rectangular in shape and is bordered by a rim surrounding the well. A backing plate is formed of an insulating material bonded to the crystal and serves to reinforce the rim of the crystal of semiconductor material.Type: GrantFiled: September 19, 2002Date of Patent: August 29, 2006Assignee: Volcano CorporationInventors: Paul D. Corl, Robert Z. Obara, John E Ortiz
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Patent number: 6976965Abstract: A guide wire having pressure sensing capabilities for measuring the pressure of liquid in a vessel comprising a flexible elongate member and having proximal and distal extremities and having an outside diameter of 0.018? or less. The distal extremity of said flexible elongate member is adapted to be disposed in the liquid in said vessel. A housing is carried by the flexible elongate member and has a diameter substantially the same as the diameter of the flexible elongate member. The housing has a space therein with a pressure sensor mounted in the space in the housing. The pressure sensor has a diaphragm that is sensitive to changes of pressure in the liquid in the vessel. The diaphragm is rectangular in shape and is bordered by a rim surrounding the well. A backing plate is formed of an insulating material bonded to the crystal and serves to reinforce the rim of the crystal of semiconductor material.Type: GrantFiled: September 19, 2002Date of Patent: December 20, 2005Assignee: Volcano CorporationInventors: Paul D. Corl, Robert Z. Obara, John E. Ortiz
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Patent number: 6913581Abstract: A therapeutic ultrasound delivery system, comprises: a catheter body, a plurality of axially spaced-apart hollow cylindrical vibrational transducers disposed along a length of the catheter body, a first spring connector wrapped around the outer surfaces of the vibrational transducers, where the first spring connector exerting an inward pre-stress on the outer surfaces of the vibrational transducers; and a second connector disposed in contact with the inner surfaces of the vibrational transducers. The second connector may comprise a spring coil, particularly a spring coil having multiple deflection points which contact an inner surface of the cylindrical vibrational transducer.Type: GrantFiled: October 24, 2002Date of Patent: July 5, 2005Inventors: Paul D. Corl, John McKenzie, Joseph Karratt, Gary Hulme
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Publication number: 20040230116Abstract: Methods and systems for detecting ultrasound transducer failure in an ultrasound catheter system comprise providing a memory device or other data storage element or catheter body having at least one ultrasound transducer disposed. The memory device stores a test current amplitude value which relates to an actual operating peak current for the at least one ultrasound transducer. An average actual operating peak current amplitude during a first period of time is calculated, and an actual operating peak current for the at least one ultrasound transducer over a second period of time may optionally also be calculated. Transducer failure has occurred if the actual operating peak current amplitude passes outside of a fit preferred range during the firs period of time, or the actual operating peak current amplitude passes outside of a second preferred range during a second period of time.Type: ApplicationFiled: May 12, 2003Publication date: November 18, 2004Applicant: PHARMASONICS, INC.Inventors: Mark W. Cowan, Paul D. Corl, Byron J. Reynolds
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Patent number: 6767327Abstract: A method of measuring blood pressure and velocity proximally and distally of a stenosis in a vessel carrying blood includes the steps of providing a guide wire having both a pressure sensor and a velocity sensor disposed on a distal region of the guide wire, introducing the guide wire into the vessel, advancing the guide wire to position the pressure sensor and the velocity sensor proximally and distally of the stenosis, and measuring the blood pressure and velocity proximally and distally of the stenosis with the pressure sensor and the velocity sensor.Type: GrantFiled: August 21, 2000Date of Patent: July 27, 2004Assignee: Volcano Therapeutics, Inc.Inventors: Paul D. Corl, Robert Z. Obara, John E. Ortiz
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Patent number: 6755853Abstract: A method for inhibiting hyperplasia at an anastomotic junction of a vascular fistula or vascular graft comprises exposing the anastomotic junction to vibrational energy at a mechanical index and for a time sufficient to inhibit hyperplasia. Kits are described comprising the catheter or a probe suitable for performing the methods together with instructions for use setting forth the methods. The methods and kits are particularly suitable for treating anastomotic junctions formed to provide vascular access for hemodialysis, hemofiltration, and the like. The methods and kits are also suitable for treating other vascular grafts, such as those formed during cardiac bypass graft surgery, vascular repair, and the like.Type: GrantFiled: December 5, 2001Date of Patent: June 29, 2004Assignee: Pharmasonics, Inc.Inventors: John R. McKenzie, Robert F. Zuk, Axel F. Brisken, Paul D. Corl
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Publication number: 20030109812Abstract: A therapeutic ultrasound delivery system, comprises: a catheter body, a plurality of axially spaced-apart hollow cylindrical vibrational transducers disposed along a length of the catheter body, a first spring connector wrapped around the outer surfaces of the vibrational transducers, where the first spring connector exerting an inward pre-stress on the outer surfaces of the vibrational transducers; and a second connector disposed in contact with the inner surfaces of the vibrational transducers. The second connector may comprise a spring coil, particularly a spring coil having multiple deflection points which contact an inner surface of the cylindrical vibrational transducer.Type: ApplicationFiled: October 24, 2002Publication date: June 12, 2003Applicant: Pharmasonics, Inc.Inventors: Paul D. Corl, John McKenzie, Joseph Karratt, Gary Hulme
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Publication number: 20030040674Abstract: A guide wire having pressure sensing capabilities for measuring the pressure of liquid in a vessel comprising a flexible elongate member and having proximal and distal extremities and having an outside diameter of 0.018″ or less. The distal extremity of said flexible elongate member is adapted to be disposed in the liquid in said vessel. A housing is carried by the flexible elongate member and has a diameter substantially the same as the diameter of the flexible elongate member. The housing has a space therein with a pressure sensor mounted in the space in the housing. The pressure sensor has a diaphragm that is sensitive to changes of pressure in the liquid in the vessel. The diaphragm is rectangular in shape and is bordered by a rim surrounding the well. A backing plate is formed of an insulating material bonded to the crystal and serves to reinforce the rim of the crystal of semiconductor material.Type: ApplicationFiled: September 19, 2002Publication date: February 27, 2003Applicant: Jomed, Inc.Inventors: Paul D. Corl, Robert Z. Obara, John E. Ortiz
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Patent number: 6524271Abstract: A method of treating a target region in a body lumen, said method comprising: directing a uniform dose of ultrasonic energy from an interior of the lumen radially outward over a treatment length of the lumen, wherein the dosage of ultrasonic energy received at any one point along the length varies by no more than plus or minus 6 decibels from that received at any other point along the length.Type: GrantFiled: July 2, 2001Date of Patent: February 25, 2003Assignee: Pharmasonics, Inc.Inventors: Axel F. Brisken, John R. McKenzie, Robert F. Zuk, Menahem Nassi, Mark W. Cowan, Paul D. Corl
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Publication number: 20030018273Abstract: A guide wire having pressure sensing capabilities for measuring the pressure of liquid in a vessel comprising a flexible elongate member and having proximal and distal extremities and having an outside diameter of 0.018″ or less. The distal extremity of said flexible elongate member is adapted to be disposed in the liquid in said vessel. A housing is carried by the flexible elongate member and has a diameter substantially the same as the diameter of the flexible elongate member. The housing has a space therein with a pressure sensor mounted in the space in the housing. The pressure sensor has a diaphragm that is sensitive to changes of pressure in the liquid in the vessel. The diaphragm is rectangular in shape and is bordered by a rim surrounding the well. A backing plate is formed of an insulating material bonded to the crystal and serves to reinforce the rim of the crystal of semiconductor material.Type: ApplicationFiled: September 19, 2002Publication date: January 23, 2003Applicant: Jomed Inc.Inventors: Paul D. Corl, Robert Z. Obara, John E. Ortiz
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Patent number: 6432068Abstract: A therapeutic ultrasound energy delivery system includes a probe having a vibrational transducer. A restraint is disposed about the transducer in order to exert a compressive pre-stress on the transducer. The restraint inhibits tensile failure of the vibrational transducer at high acoustic output.Type: GrantFiled: March 20, 2000Date of Patent: August 13, 2002Assignee: Pharmasonics, Inc.Inventors: Paul D. Corl, Joseph Karratt, John McKenzie