Patents by Inventor Charles Theodoor Lancee
Charles Theodoor Lancee 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: 9993225Abstract: An apparatus and methods to quantify the volume of urine in a human bladder with a limited number of acoustic beams is disclosed. In a first version a plurality of narrow ultrasound beams is transmitted in different directions towards the bladder. Returning echoes are converted to digital form and stored in memory. A volume display on the apparatus allows to define the optimal apposition of the transducer assembly. Signal processing software automatically determines the bladder Depth D and Height H and computes the volume of urine. In a second version, a single wide angle ultrasound beam transducer transmits ultrasounds signals at a fundamental frequency to quantify the urine volume. Return signals originating from a depth beyond the usual position of the posterior wall depth of a filled bladder are analyzed for presence of higher harmonic signals, which in turn are related to the presence or absence of urine.Type: GrantFiled: April 14, 2010Date of Patent: June 12, 2018Assignee: Verathon Inc.Inventors: Gerald McMorrow, Henri Baartmans, Nicolaas Bom, Charles Theodoor Lancee
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Patent number: 9962127Abstract: A catheter-based optical imaging system for imaging a patient includes a catheter-based imaging device configured to direct optical radiation towards a vessel wall and to receive reflected radiation therefrom. A displacement mechanism is configured to vary the position of the imaging device relative to the catheter as a function of time during an imaging scan. An input is configured to receive cardiac event timing data, such as ECG data, from the patient. A trigger module is configured to initiate an imaging scan based on the cardiac event timing obtained from the cardiac event timing data. By triggering the optical imaging scans between cardiac events, artifacts in the image data can be reduced or eliminated.Type: GrantFiled: March 17, 2014Date of Patent: May 8, 2018Assignee: Erasmus University Medical Center RotterdamInventors: Tianshi Wang, Charles Theodoor Lancee, Antonius Franciscus Wilhelmus Van Der Steen, Gijs Van Soest
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Publication number: 20160228071Abstract: A catheter-based optical imaging system for imaging a patient includes a catheter-based imaging device configured to direct optical radiation towards a vessel wall and to receive reflected radiation therefrom. A displacement mechanism is configured to vary the position of the imaging device relative to the catheter as a function of time during an imaging scan. An input is configured to receive cardiac event timing data, such as ECG data, from the patient. A trigger module is configured to initiate an imaging scan based on the cardiac event timing obtained from the cardiac event timing data. By triggering the optical imaging scans between cardiac events, artefacts in the image data can be reduced or eliminated.Type: ApplicationFiled: March 17, 2014Publication date: August 11, 2016Inventors: Tianshi Wang, Charles Theodoor Lancee, Antonius Franciscus Wihelms Van Der Steen, Van Soest Gijs
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Patent number: 8308644Abstract: An apparatus and methods to quantify the volume of urine in a human bladder with a limited number of acoustic beams is disclosed. In a first version the apparatus is composed of a transducers assembly that transmits a plurality of narrow ultrasound beams in different directions towards the bladder and receives the returning ultrasound signals; a receiver detector for processing the returned signals; an analog-to-digital converter; a memory to store the digitized data and a volume display allowing to define the optimal position of the transducer assembly. The apparatus also includes a signal processing software that automatically determines the bladder Depth D and Height H and computes the volume of urine using an empirical formula corrected by specific, empirically measured, filling dependant correction factors. In a second version a single wide angle ultrasound beam transducer transmitting ultrasound signals at fundamental frequency is used to quantify the urine volume.Type: GrantFiled: July 1, 2003Date of Patent: November 13, 2012Assignee: Verathon Inc.Inventors: Gerald McMorrow, Henri Baartmans, Nicolaas Bom, Charles Theodoor Lancee
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Patent number: 8221321Abstract: Ultrasound imaging systems and methods are disclosed. In one embodiment, an ultrasonography method includes creating a database that is representative of a tissue, a fluid, or a cavity of a body, and transmitting ultrasound pulses into a region-of-interest in a patient. Echoes are received from the region of interest, and based upon the received echoes, compiling an ultrasonic pattern of the region-of-interest is compiled. The pattern is processed by comparing the region-of-interest patterns to the pattern information stored in the database. A composition within the region-of-interest of the patient is then determined.Type: GrantFiled: August 26, 2005Date of Patent: July 17, 2012Assignee: Verathon Inc.Inventors: Gerald McMorrow, Vikram Chalana, Jongtae Yuk, Henri Baartmans, Nicolaas Bom, Charles Theodoor Lancee, Egon J. W. Merks
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Publication number: 20100198075Abstract: An apparatus and methods to quantify the volume of urine in a human bladder with a limited number of acoustic beams is disclosed. In a first version a plurality of narrow ultrasound beams is transmitted in different directions towards the bladder. Returning echoes are converted to digital form and stored in memory. A volume display on the apparatus allows to define the optimal apposition of the transducer assembly. Signal processing software automatically determines the bladder Depth D and Height H and computes the volume of urine. In a second version, a single wide angle ultrasound beam transducer transmits ultrasounds signals at a fundamental frequency to quantify the urine volume. Return signals originating from a depth beyond the usual position of the posterior wall depth of a filled bladder are analyzed for presence of higher harmonic signals, which in turn are related to the presence or absence of urine.Type: ApplicationFiled: April 14, 2010Publication date: August 5, 2010Applicant: VERATHON INC.Inventors: Gerald McMorrow, Henri Baartmans, Nicolaas Bom, Charles Theodoor Lancee
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Patent number: 7749165Abstract: An apparatus and methods to quantify the volume of urine in a human bladder with a limited number of acoustic beams is disclosed. In a first version a plurality of narrow ultrasound beams is transmitted in different directions towards the bladder. Returning echoes are converted to digital form and stored in memory. A volume display on the apparatus allows to define the optimal apposition of the transducer assembly. Signal processing software automatically determines the bladder Depth D and Height H and computes the volume of urine. In a second version, a single wide angle ultrasound beam transducer transmits ultrasounds signals at a fundamental frequency to quantify the urine volume. Return signals originating from a depth beyond the usual position of the posterior wall depth of a filled bladder are analyzed for presence of higher harmonic signals, which in turn are related to the presence or absence of urine.Type: GrantFiled: December 13, 2004Date of Patent: July 6, 2010Assignee: Verathon Inc.Inventors: Gerald McMorrow, Henri Baartmans, Nicolaas Bom, Charles Theodoor Lancee
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Publication number: 20080139934Abstract: Ultrasound imaging systems and methods are disclosed. In one embodiment, an ultrasonography method includes creating a database that is representative of a tissue, a fluid, or a cavity of a body, and transmitting ultrasound pulses into a region-of-interest in a patient. Echoes are received from the region of interest, and based upon the received echoes, compiling an ultrasonic pattern of the region-of-interest is compiled. The pattern is processed by comparing the region-of-interest patterns to the pattern information stored in the database. A composition within the region-of-interest of the patient is then determined.Type: ApplicationFiled: October 27, 2007Publication date: June 12, 2008Inventors: Gerald McMorrow, Vikram Chalana, Jongtae Yuk, Henri Baartmans, Nicolaas Bom, Charles Theodoor Lancee, Egon J.W. Merks
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Patent number: 6685646Abstract: A method to measure spatial fluid flow components and their velocity profiles in a number of locations in a cross-sectional area of a lumen or other body cavity by using ultrasound in which the cross-sectional area is interrogated by a plurality of ultrasonic beams; the estimation of the spatial flow components is obtained from a combination of estimations of axial, lateral and total flow; the estimation of one or more flow components is obtained through any combination of time-shift and decorrelation analysis of two or more beam-signals of the interrogating ultrasound transducer; and the estimation accuracy is further improved by the use of a reference decorrelation curve obtained from experiments or beam-theory or both.Type: GrantFiled: December 26, 2000Date of Patent: February 3, 2004Assignee: Jomed Inc.Inventors: Eduardo Ignacio Cespedes, Charles Theodoor LanceƩ, Antonius Franciscus Wilhemus Van Der Steen, Wenguang Li, Nicolaas Bom
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Publication number: 20020013530Abstract: A method to measure spatial fluid flow components and their velocity profiles in a number of locations in a cross-sectional area of a lumen or other body cavity by using ultrasound in which the cross-sectional area is interrogated by a plurality of ultrasonic beams; the estimation of the spatial flow components is obtained from a combination of estimations of axial, lateral and total flow; the estimation of one or more flow components is obtained through any combination of time-shift and decorrelation analysis of two or more beam-signals of the interrogating ultrasound transducer; and the estimation accuracy is further improved by the use of a reference decorrelation curve obtained from experiments or beam-theory or both.Type: ApplicationFiled: December 26, 2000Publication date: January 31, 2002Inventors: Eduardo Ignacio Cespedes, Charles Theodoor Lancee, Antonius Franciscus Wilhelmus Van Der Steen, Wenguang Li, Nicolaas Bom
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Patent number: 6213950Abstract: A method to measure spatial fluid flow components and their velocity profiles in a number of locations in a cross-sectional area of a lumen or other body cavity by using ultrasound in which the cross-sectional area is interrogated by a plurality of ultrasonic beams; the estimation of the spatial flow components is obtained from a combination of estimations of axial, lateral and total flow; the estimation of one or more flow components is obtained through any combination of time-shift and decorrelation analysis of two or more beam-signals of the interrogating ultrasound transducer, and the estimation accuracy is further improved by the use of a reference decorrelation curve.Type: GrantFiled: July 2, 1999Date of Patent: April 10, 2001Assignee: EndoSonics CorporationInventors: Eduardo Ignacio Cespedes, Charles Theodoor LanceƩ, Antonius Franciscus Wilhelmus Van Der Steen, Wenguang Li, Nicolaas Bom
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Patent number: 5709661Abstract: The electronic catheter displacement sensor comprises a displacement sensing roller and an idler roller between which a catheter can be advanced or retracted, circuitry for sensing the rotation of the displacement sensing roller, circuitry for determining the direction in which the displacement sensing roller is rotated, and circuitry coupled to said rotation sensing circuitry and to said direction sensing circuitry for generating an output signal for transmission to a visual display device for displaying the distance the catheter has been advanced or retracted. The rollers can be mounted in a sensor unit separable from the displacement sensor and the sensor unit is preferably disposable.Type: GrantFiled: December 22, 1994Date of Patent: January 20, 1998Assignee: Endo Sonics Europe B.V.Inventors: Franciscus Cornelis Van Egmond, Charles Theodoor Lancee