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Inventor:
Corl; Paul D.
Address:
Palo Alto, CA
No. of patents:
29
Patents:












Patent Number Title Of Patent Date Issued
7967762 Ultra miniature pressure sensor June 28, 2011
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 in
7630747 Apparatus for ascertaining blood characteristics and probe for use therewith December 8, 2009
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
7097620 Guidewire with pressure and temperature sensing capabilities August 29, 2006
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
6976965 Ultra miniature pressure sensor December 20, 2005
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
6913581 High output therapeutic ultrasound transducer July 5, 2005
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
6767327 Method of measuring blood pressure and velocity proximally and distally of a stenosis July 27, 2004
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 in
6755853 Methods and kits for the inhibition of hyperplasia in vascular fistulas and grafts June 29, 2004
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
6524271 Therapeutic ultrasound catheter for delivering a uniform energy dose February 25, 2003
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
6432068 High output therapeutic ultrasound transducer August 13, 2002
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 acoust
6387116 Methods and kits for the inhibition of hyperplasia in vascular fistulas and grafts May 14, 2002
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
6296619 Therapeutic ultrasonic catheter for delivering a uniform energy dose October 2, 2001
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
6106476 Ultra miniature pressure sensor and guide wire using the same and method August 22, 2000
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
6025670 Miniature, high efficiency dual frequency ultrasonic transducer with selectable beamwidth February 15, 2000
Ultrasonic transducer with a selectable beamwidth comprising a body of piezoelectric material in the form of an annulus having an outer diameter D and a thickness T. The body has proximal and distal generally planar parallel surfaces and a centrally disposed hole extending therethrough.
5908385 Apparatus for mapping electrical activity in a body and treating tissue June 1, 1999
A guide wire assembly comprises a tubular body having a distal end and an proximal end. At least a portion of the body comprises a single continuous helical spring to which one or more tubular electrodes are secured. The electrodes are insulated from the spring by means of an insulator.
5740596 Method of making a miniature, high efficiency dual frequency ultrasonic transducer April 21, 1998
Ultrasonic transducer with a selectable beamwidth comprising a body of piezoelectric material in the form of an annulus having an outer diameter D and a thickness T. The body has proximal and distal generally planar parallel surfaces and a centrally disposed hole extending therethrough.
5715827 Ultra miniature pressure sensor and guide wire using the same and method February 10, 1998
A guidewire 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 ad
5581144 Miniature, high efficiency dual frequency ultrasonic transducer with selectable beamwidth and ap December 3, 1996
Ultrasonic transducer with a selectable beamwidth comprising a body of piezoelectric material in the form of an annulus having an outer diameter D and a thickness T. The body has proximal and distal generally planar parallel surfaces and a centrally disposed hole extending therethrough.
5517989 Guidewire assembly May 21, 1996
A method of diagnosing and treating the human or animal body comprises feeding a flexible guide wire, dimensioned to be inserted into human coronary arteries, along a blood vessel in the human or animal body and epicardially mapping the electrocardiographic signals by means of electr
5271404 Method and apparatus for processing signal data to form an envelope on line December 21, 1993
An apparatus for generating a velocity spectrogram is described. The apparatus includes a transducer which is positionable within a vessel. The transducer receives a time-varying Doppler signal which contains information related to fluid velocity values within the vessel. A Fourier t
5174295 Apparatus, system and method for measuring spatial average velocity and/or volumetric flow of bl December 29, 1992
System for measuring a characteristic of flow of liquid in a vessel of a patient comprising a transducer positioned in a vessel in a patient for supplying ultrasonic energy. The transducer produces a substantially inform beam which encompasses the vessel. The transducer receives ultr
5163445 Apparatus, system and method for measuring spatial average velocity and/or volumetric flow of bl November 17, 1992
System for measuring a characteristic of flow of liquid in a vessel of a patient comprising a transducer positioned in a vessel in a patient for supplying ultrasonic energy. The transducer produces a substantially uniform beam which encompasses the vessel. The transducer receives ult
5125137 Method for providing a miniature ultrasound high efficiency transducer assembly June 30, 1992
Method for providing micro-miniature high efficiency ultrasonic transducer assembly having a diameter of 0.018 inches or less. A transducer is formed from a selected transducer material to provide a cylindrical transducer having front and back sides with a thickness which is one-half of
5105818 Apparatus, system and method for measuring spatial average velocity and/or volumetric flow of bl April 21, 1992
System for measuring a characteristic of flow of liquid in a vessel of a patient comprising a transducer positioned in a vessel in a patient for supplying ultrasonic energy. The transducer produces a substantially uniform beam which encompasses the vessel. The transducer receives ult
5078148 Apparatus and method for continuously measuring volumetric blood flow using multiple transducers January 7, 1992
Apparatus for measuring volumetric flow of a liquid in a vessel having a wall and having an axis extending longitudinally of the vessel parallel to the vessel wall. A flexible catheter is adapted to be disposed in the vessel. First and second ultrasonic transducers are carried by the
5059851 Miniature ultrasound high efficiency transducer assembly, guidewire using the same and method October 22, 1991
Guidewire comprising a flexible elongate member having a distal extremity with an ultrasonic transducer secured to the distal extremity of the flexible elongate member. The transducer has a diameter ranging from 0.007 inches to 0.018 inches and has a thickness and a diameter to provide a
4974211 Digital ultrasound system with dynamic focus November 27, 1990
An ultrasound system for investigating a subject comprises a probe, a signal processing module, and an interconnecting cable. The probe includes an annular phased array transducer defining multiple signal processing channels. The signal processing module includes a controller, a tran
4967753 Apparatus, system and method for measuring spatial average velocity and/or volumetric flow of bl November 6, 1990
System for measuring a characteristic of flow of liquid in a vessel of a patient comprising a transducer positioned in a vessel in a patient for supplying ultrasonic energy. The transducer produces a substantially uniform beam which encompasses the vessel. The transducer receives ult
4947852 Apparatus and method for continuously measuring volumetric blood flow using multiple transducer August 14, 1990
Apparatus for measuring volumetric flow of a liquid in a vessel having a wall and having an axis extending longitudinally of the vessel parallel to the vessel wall. A flexible catheter is adapted to be disposed in the vessel. First and second ultrasonic transducers are carried by the
4869263 Device and method for measuring volumetric blood flow in a vessel September 26, 1989
Device for measuring volumetric blood flow in a vessel comprising a catheter having proximal and distal extremities. A balloon is carried by the distal extremity of the catheter. A balloon inflation lumen is carried by the catheter and is in communication with the balloon. A toroidal










 
 
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