Patents by Inventor Antonia Cornelia van Rens

Antonia Cornelia van Rens 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).

  • Publication number: 20200346248
    Abstract: An ultrasound system has a set of CMUT ultrasound transducer devices and a drive circuit for operating the ultrasound transducer devices, for delivering an AC drive signal and receiving a reflected signal. An intermediate circuit is between the drive circuit and the set of ultrasound devices in the form of an array of coupling circuits, each coupling circuit between the drive circuit and an associated at least one ultrasound transducer device. Each coupling circuit comprises a buffer element connected between a bias voltage and a device terminal and as series capacitor. The intermediate circuit serves as a connection link between the set of CMUT transducer elements and the driving/sensing electronics, and is formed as a passive integrated technology circuit. The buffer element prevents a low-impedance short between the CMUT cell bias node and the counter electrode in the case of a CMUT cell drum short circuit.
    Type: Application
    Filed: April 29, 2020
    Publication date: November 5, 2020
    Inventor: Antonia Cornelia van Rens
  • Publication number: 20200309581
    Abstract: A sensor device comprises at least two sensors at the end of a shaft (such as a guidewire or catheter). One sensor uses signals in a first frequency range and a first voltage range and the other sensor uses signals in a second frequency range different to the first frequency range and a second voltage range different to the first voltage range. The first sensor is shorted based on frequency analysis, thereby to prevent the first sensor being exposed to signals associated with the second sensor. This enables the two sensors to be driven by the same shared pair of wires along the shaft, with automatic selection of the suitable sensor.
    Type: Application
    Filed: November 14, 2018
    Publication date: October 1, 2020
    Inventors: Antonia Cornelia VAN RENS, Amine MOUNAIM
  • Patent number: 10773277
    Abstract: An ultrasound system (1) is disclosed that comprises a probe (10) including an array (110) of CMUT (capacitive micromachined ultrasound transducer) cells (100), each cell comprising a substrate (112) carrying a first electrode (122) of an electrode arrangement, the substrate being spatially separated from a flexible membrane (114) including a second electrode (120) of said electrode arrangement by a gap (118); a voltage supply (45) coupled to said probe and adapted to provide a first set of said CMUT cells with a sequence of drive voltages each including a bias voltage component and a stimulus component of different frequency for generating a series of temporally distinct pulses each having a different frequency, wherein each pulse is generated in a separate transmit mode and provide a second set of said CMUT cells with a sequence of temporally distinct bias voltages, wherein each temporally distinct bias voltage is provided in a receive mode following one of said transmit modes and is for setting the second
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: September 15, 2020
    Assignee: Koninklijke Philips N.V.
    Inventor: Antonia Cornelia Van Rens
  • Publication number: 20200196979
    Abstract: The present application discloses a bladder monitoring system comprising a wearable bladder monitoring device (1) including securing means (27, 29) for securing the device to a subject's (40) body; a phased array (11) of ultrasound transducers (10); and a phased array controller (13) adapted to control the phased array to direct a plurality of ultrasound beams (30, 30?, 30?) into the subject's body under a range of beam angles, as well as a signal processor (23) adapted to receive data pertaining to echo signals (31, 31?, 31?) of said ultrasound beams from the phased array.
    Type: Application
    Filed: March 29, 2018
    Publication date: June 25, 2020
    Inventors: Christianus Martinus VAN HEESCH, Igor Wilhelmus Franciscus PAULUSSEN, Nico Maris Adriaan DE WILD, Katia DONATO, Peter BINGLEY, Ke WANG, Franciscus Hendrikus VAN HEESCH, Aydin MERT, Rick BEZEMER, Antonia Cornelia VAN RENS, Franciscus Paulus Maria BUDZELAAR
  • Publication number: 20200164405
    Abstract: An ultrasound system has a set of CMUT transducer devices and drive electronics for operating a selected device of the set. The drive electronics is shared between all devices of the set. Selection is made by using a set of switches (178), with a respective switch between a DC bias output (166) of the drive electronics and an associated input (160) of each device. This provides a simple way to provide a selection function between the drive electronics and multiple ultrasound devices. In this way, the number of devices may be scale up, to cover a larger area, but without scaling the cost of the system by the same degree.
    Type: Application
    Filed: July 31, 2018
    Publication date: May 28, 2020
    Inventors: Nico Maris Adriaan de Wild, Marc Godfriedus Marie Notten, Antonia Cornelia van Rens, Franciscus Hendrikus van Heesch, Mckee Dunn Poland
  • Publication number: 20200054227
    Abstract: An invasive instrument (1) is disclosed comprising an instrument tip including a sensor chip (10) comprising a sensor (20) adapted to produce a modulated sensor signal having a signal frequency and a non-volatile memory (30) responsive to said sensor signal for storing data relating to said sensor; a first supply wire (11) for connecting the sensor chip to ground and a second supply wire (13) for connecting the sensor chip to a power supply (61) for providing a supply voltage to the sensor chip. The device further comprises a circuitry arrangement arranged to combine said sensor signal and said output into a combined signal and superimpose said combined signal as a modulation over the supply voltage such that simultaneous data communication of the sensor and memory data can be provided using two interface wires only. A system including such an invasive instrument and a method of operating such a system are also disclosed.
    Type: Application
    Filed: March 23, 2018
    Publication date: February 20, 2020
    Inventor: Antonia Cornelia VAN RENS
  • Patent number: 10549316
    Abstract: The invention related to an ultrasound system comprising: an ultrasound array including at least one capacitive micromachined ultrasonic transducer device comprising a membrane coupled to a first electrode, a substrate opposing the membrane with a gas or vacuum cavity there between and coupled to a second and a third electrodes, wherein the second electrode opposes the first electrode in a peripheral region and the third electrode opposes the first electrode in a central region; at least one drive circuit coupled to the array. The system further comprises a high impedance resistor, which electrically couples to the second electrode and the third electrode and has an impedance value higher than an AC impedance between the first and the second electrodes, when the membrane of the CMUT device is in the collapsed state and the CMUT devices is activated at operating frequency.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: February 4, 2020
    Assignee: Koninklijke Philips N.V.
    Inventors: Franciscus Paulus Maria Budzelaar, Alfons Wouter Groenland, Antonia Cornelia Van Rens
  • Patent number: 10451717
    Abstract: An ultrasound transducer assembly is disclosed, comprising: a plurality of ultrasound transducer elements for receiving ultrasound waves and for providing transducer signals corresponding to the respectively received ultrasound waves. The assembly comprises a plurality of signal combiners for providing different output signals on the basis of the transducer signals, and a plurality of timing elements for providing different time shifts to the transducer signals. Each of the ultrasound transducer elements is connected to a plurality of the signal combiners for providing the transducer signals including the different time shifts to different of the signal combiners.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: October 22, 2019
    Assignee: Koninklijke Philips N.V.
    Inventor: Antonia Cornelia van Rens
  • Publication number: 20190310231
    Abstract: Disclosed is an ultrasound probe (10) including an array (110) of CMUT (capacitive micromachined ultrasound transducer) cells (100), each cell comprising a substrate (112) carrying a first electrode (122) of an electrode arrangement, the substrate being spatially separated from a flexible membrane (114) including a second electrode (120) of said electrode arrangement by a gap (118); an acoustic window (140) over the array of CMUT cells; and a data storage element (150) accessible to an external control module of the ultrasound probe. The data storage element stores configuration information for configuring an operation of the array of CMUT cells in pre-collapse or collapse mode with the external control module to optimize the effective bandwidth of the array. Also disclosed is a calibration method of the ultrasound probe, an ultrasound system and a method of operating the ultrasound system.
    Type: Application
    Filed: November 30, 2017
    Publication date: October 10, 2019
    Inventors: Nenad Mihajlovic, Antonia Cornelia van Rens, Sergei Shulepov
  • Publication number: 20190137612
    Abstract: An ultrasound transducer assembly is disclosed, comprising: a plurality of ultrasound transducer elements for receiving ultrasound waves and for providing transducer signals corresponding to the respectively received ultrasound waves. The assembly comprises a plurality of signal combiners for providing different output signals on the basis of the transducer signals, and a plurality of timing elements for providing different time shifts to the transducer signals. Each of the ultrasound transducer elements is connected to a plurality of the signal combiners for providing the transducer signals including the different time shifts to different of the signal combiners.
    Type: Application
    Filed: January 8, 2019
    Publication date: May 9, 2019
    Inventor: Antonia Cornelia van Rens
  • Patent number: 10265728
    Abstract: A capacitive micromachined ultrasonic transducer (CMUT) cell comprising three electrodes: a first electrode coupled to a cell membrane; a second electrode embedded into a cell floor opposing the first electrode and separated therefrom by a gas or vacuum cavity; and a third electrode opposing the second electrode on the cavity side, wherein a dielectric layer is sandwiched between the second electrode and the third electrode to create a capacitive relation between the second electrode and the third electrode. The three electrode CMUT cell provides an ultrasound transducer with two actively driven (controlled) electrodes.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: April 23, 2019
    Assignee: Koninklijke Philips N.V.
    Inventors: Antonia Cornelia Van Rens, Alfons Wouter Groenland
  • Patent number: 10209352
    Abstract: An ultrasound transducer assembly (30) is disclosed, comprising: a plurality of ultrasound transducer elements (34, 36, 38) for receiving ultrasound waves and for providing transducer signals (X2, X3, X4) corresponding to the respectively received ultrasound waves. The assembly comprises a plurality of signal combiners (42, 44; 60, 62, 64) for providing different output signals (Y1, Y2) on the basis of the transducer signals, and a plurality of timing elements (48, 52; 68, 70; 72, 74) for providing different time shifts (?) to the transducer signals. Each of the ultrasound transducer elements is connected to a plurality of the signal combiners for providing the transducer signals including the different time shifts to different of the signal combiners.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: February 19, 2019
    Assignee: Koninklijke Philips N.V.
    Inventor: Antonia Cornelia van Rens
  • Publication number: 20180360417
    Abstract: Disclosed are an imaging system (10) or an interventional tool, such as a catheter (20), having a first ultrasound transducer array (23) and a second ultrasound transducer array (21) spaced by a fixed distance (D) from each other; wherein both arrays may be used to generate diagnostic images; and a processing arrangement (31, 32) to process a first sensor signal indicative of the first array imaging a reference location (X) at a first point in time, and to process a second sensor signal indicative of the second array imaging the reference location at a second point in time; and determine a translation (pullback) speed of the catheter from the set distance and the difference between the first point in time and the second point in time. Alternatively, a catheter may be provided comprising an ultrasound transducer array at a distal end of the catheter, and two pressure sensors for determining the translation speed.
    Type: Application
    Filed: December 1, 2016
    Publication date: December 20, 2018
    Inventors: VINCENT ADRIANUS HENNEKEN, ANTONIA CORNELIA VAN RENS, ROLAND WILHELMUS MARIA BULLENS, ARJEN VAN DER HORST, KE WANG, FRANK MICHAEL WEBER, IRINA WAECHTER-STEHLE
  • Publication number: 20180180726
    Abstract: An ultrasound transducer assembly (30) is disclosed, comprising: a plurality of ultrasound transducer elements (34, 36, 38) for receiving ultrasound waves and for providing transducer signals (X2, X3, X4) corresponding to the respectively received ultrasound waves. The assembly comprises a plurality of signal combiners (42, 44; 60, 62, 64) for providing different output signals (Y1, Y2) on the basis of the transducer signals, and a plurality of timing elements (48, 52; 68, 70; 72, 74) for providing different time shifts (?) to the transducer signals. Each of the ultrasound transducer elements is connected to a plurality of the signal combiners for providing the transducer signals including the different time shifts to different of the signal combiners.
    Type: Application
    Filed: June 8, 2015
    Publication date: June 28, 2018
    Applicant: KONINKLJKE PHILIPS N.V.
    Inventor: Antonia Cornelia VAN RENS
  • Publication number: 20180064419
    Abstract: An ultrasound probe contains an array transducer and a microbeamformer coupled to elements of the array. The microbeamformer comprises analog to digital converters and digital beamforming circuitry for at least thirty-two digital channels in the microbeamformer. Preferably the analog to digital converters are low power ADCs for reduced power consumption in the probe. Integrated circuits of thirty-two channels can be cascaded to produce 64-channel and 128-channel digital microbeamformers for an ultrasound array probe.
    Type: Application
    Filed: August 24, 2017
    Publication date: March 8, 2018
    Inventors: BERNARD JOSEPH SAVORD, ANTONIA CORNELIA VAN RENS, SOTIR FILIPOV OUZOUNOV, MCKEE DUNN POLAND, NIK LEDOUX
  • Publication number: 20180064418
    Abstract: An ultrasound probe has a two dimensional matrix array transducer and a digital microbeamformer. The microbeamformer comprises a plurality of transmitters and amplifiers coupled to elements of the array transducer, a plurality of low power analog to digital converters and digital beamforming circuitry coupled to the amplifiers, a microbeamformer controller, a power supply and a USB controller which cumulatively consume three watts or less.
    Type: Application
    Filed: August 21, 2017
    Publication date: March 8, 2018
    Inventors: BERNARD JOSEPH SAVORD, ANTONIA CORNELIA VAN RENS, SOTIR FILIPOV OUZOUNOV, MCKEE DUNN POLAND, NIK LEDOUX
  • Publication number: 20180029076
    Abstract: An ultrasound system (1) is disclosed that comprises a probe (10) including an array (110) of CMUT (capacitive micromachined ultrasound transducer) cells (100), each cell comprising a substrate (112) carrying a first electrode (122) of an electrode arrangement, the substrate being spatially separated from a flexible membrane (114) including a second electrode (120) of said electrode arrangement by a gap (118); a voltage supply (45) coupled to said probe and adapted to provide a first set of said CMUT cells with a sequence of drive voltages each including a bias voltage component and a stimulus component of different frequency for generating a series of temporally distinct pulses each having a different frequency, wherein each pulse is generated in a separate transmit mode and provide a second set of said CMUT cells with a sequence of temporally distinct bias voltages, wherein each temporally distinct bias voltage is provided in a receive mode following one of said transmit modes and is for setting the second
    Type: Application
    Filed: February 17, 2016
    Publication date: February 1, 2018
    Inventor: ANTONIA CORNELIA VAN RENS
  • Publication number: 20170320091
    Abstract: The invention related to an ultrasound system comprising: an ultrasound array including at least one capacitive micromachined ultrasonic transducer device comprising a membrane coupled to a first electrode, a substrate opposing the membrane with a gas or vacuum cavity there between and coupled to a second and a third electrodes, wherein the second electrode opposes the first electrode in a peripheral region and the third electrode opposes the first electrode in a central region; at least one drive circuit coupled to the array. The system further comprises a high impedance resistor, which electrically couples to the second electrode and the third electrode and has an impedance value higher than an AC impedance between the first and the second electrodes, when the membrane of the CMUT device is in the collapsed state and the CMUT devices is activated at operating frequency.
    Type: Application
    Filed: November 30, 2015
    Publication date: November 9, 2017
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: FRANCISCUS PAULUS MARIA BUDZELAAR, ALFONS WOUTER GROENLAND, ANTONIA CORNELIA VAN RENS
  • Patent number: 9730636
    Abstract: The present invention relates to a minimally invasive medical instrument (100) having a proximal end (100b) and a distal end (100a) and comprising a sensor arrangement (10) arranged at the distal end (100b) of the medical instrument (100). The sensor arrangement (10) comprises a sensor (20) configured to generate sensor data in the form of an electrical sensor signal, and a data conversion device (40) configured to convert the electrical sensor signal into an optical signal and comprising an electrical input (41) for receiving the electrical sensor signal and an optical output (42) for transmitting the optical signal. The sensor arrangement (10) further comprises an optical fiber (50) configured to transmit the optical signal from the distal end (100a) to the proximal end (100b), the optical fiber (50) coupled to the output of the data conversion device (40) for receiving the optical signal, the optical fiber (50) extending from the distal end (100a) to the proximal end (100b) of the instrument (100).
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: August 15, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Ronald Dekker, Vincent Adrianus Henneken, Antonia Cornelia Van Rens
  • Patent number: 9676001
    Abstract: The present invention relates to a driver device (40) for driving a load (52) having a plurality of separate capacitive load elements (52), in particular an ultrasound transducer having a plurality of transducer elements (52), comprising: input terminals (44, 46) for connecting the driver device (40) to power supply (48); a plurality of output terminals (50) each for connecting the driver device (40) to one of load elements (52), a first controllable switch (54) connected to a first of the input terminals (44), and a plurality of driving elements (42) each having a second controllable switch (60) and a resistor (58) connected in series to each other, wherein each of the driving elements (42) is connected in series with the first controllable switch (54) and to a second of the input terminals (46), and wherein each of the output terminals (50) is connected to one of the driving elements (42) for powering the load elements (52).
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: June 13, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Antonia Cornelia Van Rens, George Anthony Brock-Fisher