公开(公告)号：US11097312B2

公开(公告)日：2021-08-24

申请号：US15751207

申请日：2016-08-04

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Bernard Joseph Savord ,  Richard Edward Davidsen

IPC: B06B1/02 ,  A61B8/00 ,  G01N29/24

Abstract: An array of CMUT cells (10) has a DC bias voltage (VB) coupled to the top electrodes of the cells to bias the electrode to a desired collapsed or partially collapsed state. Fuses (200) are coupled in series with the bottom electrodes (22) of the cells which will open and isolate an individual cell from the other still-functional cells of the array in the event of a failure of the individual cell. In a preferred embodiment the cells are coupled to control integrated circuitry such as microbeamformer circuitry and the fuses are formed of semiconductor materials with the integrated circuitry, thereby leaving the MUT surface area available for high density MUT fabrication. Damage to the integrated circuitry due to short-circuiting of the DC bias current through a failed cell is prevented.

公开(公告)号：US11090027B2

公开(公告)日：2021-08-17

申请号：US15735376

申请日：2016-06-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Richard Edward Davidsen

IPC: A61B8/00 ,  A61B8/08

Abstract: Systems, methods, and apparatuses for coupling a flexible transducer to an object are described. A transducer positioning device may include an inflatable bladder and a strap. The inflatable bladder may apply a force to a transducer array to maintain its position against the object when inflated. The strap may hold the bladder against the transducer array. Once in place, the bladder may be inflated with a fluid.

公开(公告)号：US20200037991A1

公开(公告)日：2020-02-06

申请号：US16338798

申请日：2017-10-03

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Richard Edward Davidsen

IPC: A61B8/00 ,  A61B8/12

Abstract: An imaging catheter assembly is provided. In one embodiment, the imaging catheter assembly includes a flexible elongate member including a distal portion and a proximal portion; and an imaging component coupled to the distal portion of the flexible elongate member, wherein the imaging component includes: an integrated circuit (IC) layer that includes a semiconductor material; an array of ultrasound transducer elements coupled to a first side of the IC layer; and a backing layer coupled to a second side of the IC layer opposite the first side, wherein the backing layer includes a backing material, and wherein a coefficient of thermal expansion (CTE) difference between the semiconductor material and the backing material is less than 23 parts per million per degree Centigrade (ppm/C).

公开(公告)号：US20180125463A1

公开(公告)日：2018-05-10

申请号：US15862894

申请日：2018-01-05

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Richard Edward Davidsen ,  Michael Scarsella ,  James Christopher Taylor ,  Andrew Lee Robinson ,  Wojtek Sudol

IPC: A61B8/00 ,  G10K11/00

CPC classification number: A61B8/546 ,  A61B8/4444 ,  A61B8/4483 ,  A61B8/4488 ,  A61B8/4494 ,  A61B2018/00023 ,  G01S7/52079 ,  G01S15/8915 ,  G10K11/004

Abstract: A matrix array probe including a transducer array and integrated circuitry coupled to the transducer elements dissipates heat generated by the array and integrated circuitry through the cover of the transducer probe. A pump in the probe connector pumps fluid through a closed loop system including inbound an outbound fluid conduits in the cable. The fluid conduits in the cable are separated by the cable electrical conductors for the probe. The heat transfer in the probe is done by a heat exchanger in the transducer backing block. Additional cooling may be provided by metal to metal contact with a chiller in the ultrasound system.

公开(公告)号：US11117165B2

公开(公告)日：2021-09-14

申请号：US15751252

申请日：2016-08-02

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Bernard Joseph Savord ,  Richard Edward Davidsen

IPC: B06B1/02 ,  A61B8/00 ,  G01S7/52 ,  A61B8/08 ,  G01S15/89 ,  A61B8/14 ,  G01N29/24

Abstract: An array of CMUT cells has a DC bias voltage coupled to the top electrodes of the cells to bias the electrode to a desired collapsed or partially collapsed state. In the event of a short-circuit failure of a CMUT cell a protection circuit for the cell senses an over-current condition and responds by opening the DC current path through the failed cell. The protection circuit further disables the transmit and receive circuitry of the cell. In another implementation a sense circuit senses an over-current condition of the
DC bias supply and responds by disabling all of the CMUT cells of the array, then sequentially re-enabling them, except that an attempt to re-enable a failed cell results in that cell remaining in a disabled state.

公开(公告)号：US10178986B2

公开(公告)日：2019-01-15

申请号：US15862894

申请日：2018-01-05

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Richard Edward Davidsen ,  Michael Scarsella ,  James Christopher Taylor ,  Andrew Lee Robinson ,  Wojtek Sudol

IPC: A61B8/00 ,  G10K11/00 ,  G01S7/52 ,  A61B18/00 ,  G01S15/89

Abstract: A matrix array probe including a transducer array and integrated circuitry coupled to the transducer elements dissipates heat generated by the array and integrated circuitry through the cover of the transducer probe. A pump in the probe connector pumps fluid through a closed loop system including inbound an outbound fluid conduits in the cable. The fluid conduits in the cable are separated by the cable electrical conductors for the probe. The heat transfer in the probe is done by a heat exchanger in the transducer backing block. Additional cooling may be provided by metal to metal contact with a chiller in the ultrasound system.

公开(公告)号：US09872669B2

公开(公告)日：2018-01-23

申请号：US14385783

申请日：2013-03-01

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Richard Edward Davidsen ,  Michael Scarsella ,  James Christopher Taylor ,  Andrew Lee Robinson ,  Wojtek Sudol

IPC: A61B8/00 ,  G10K11/00 ,  G01S7/52 ,  A61B18/00 ,  G01S15/89

CPC classification number: A61B8/546 ,  A61B8/4444 ,  A61B8/4483 ,  A61B8/4488 ,  A61B8/4494 ,  A61B2018/00023 ,  G01S7/52079 ,  G01S15/8915 ,  G10K11/004

Abstract: A matrix array probe including a transducer array and integrated circuitry coupled to the transducer elements dissipates heat generated by the array and integrated circuitry through the cover of the transducer probe. A pump in the probe connector pumps fluid through a closed loop system including inbound an outbound fluid conduits in the cable. The fluid conduits in the cable are separated by the cable electrical conductors for the probe. The heat transfer in the probe is done by a heat exchanger in the transducer backing block. Additional cooling may be provided by metal to metal contact with a chiller in the ultrasound system.

公开(公告)号：US10743840B2

公开(公告)日：2020-08-18

申请号：US15024065

申请日：2014-09-15

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Richard Edward Davidsen ,  Junho Song

IPC: A61B8/00 ,  B06B1/02 ,  G01S15/89 ,  G01S7/52 ,  A61B8/14

Abstract: An ultrasound transducer assembly (10) is disclosed comprising a plurality of transducer elements (32) for transmitting and receiving ultrasound waves (24) each having a substrate (40) and a flexible membrane (46) disposed in a distance from a substrate. An AC voltage control unit (56) is provided for controlling an AC voltage provided to each of the transducer elements, and a DC voltage control unit (60) for controlling a DC bias voltage provided to the transducer elements in order to bring the flexible membranes in a collapse mode into contact with the substrate. The DC voltage control unit is adapted to disconnect the DC bias voltage from the transducer elements temporarily during the operation of the ultrasound transducer assembly to limit the collapse mode.

公开(公告)号：US11813116B2

公开(公告)日：2023-11-14

申请号：US16338798

申请日：2017-10-03

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Richard Edward Davidsen

IPC: A61B8/00 ,  A61B8/12

CPC classification number: A61B8/4494 ,  A61B8/12 ,  A61B8/4466 ,  A61B2562/12

Abstract: An imaging catheter assembly is provided. In one embodiment, the imaging catheter assembly includes a flexible elongate member including a distal portion and a proximal portion; and an imaging component coupled to the distal portion of the flexible elongate member, wherein the imaging component includes: an integrated circuit (IC) layer that includes a semiconductor material; an array of ultrasound transducer elements coupled to a first side of the IC layer; and a backing layer coupled to a second side of the IC layer opposite the first side, wherein the backing layer includes a backing material, and wherein a coefficient of thermal expansion (CTE) difference between the semiconductor material and the backing material is less than 23 parts per million per degree Centigrade (ppm/C).

公开(公告)号：US11278932B2

公开(公告)日：2022-03-22

申请号：US14914019

申请日：2014-08-18

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： George Anthony Brock-Fisher ,  Richard Edward Davidsen ,  Carl Dean Herickhoff ,  Bout Marcelis ,  Wojtek Sudol ,  Junho Song

IPC: B06B1/02 ,  A61B8/00 ,  G10K11/00

Abstract: The invention relates to a capacitive micro-machined ultrasound transducer (CMUT) cell (6) comprising a cell floor (31) having a first electrode (7); a cell membrane (5) having a second electrode (7′) which opposes the first electrode and vibrates during transmission or reception of acoustic energy; a transmitter/receiver coupled to the first and second electrodes which causes the cell membrane to vibrate at an acoustic frequency and/or receives signals at an acoustic frequency; and an acoustic lens (13), overlaying the cell membrane, and having an inner surface opposing the cell membrane and an outer, patient-facing surface. According to the present invention the acoustic lens comprises at least one layer of a material selected from the group of: polybudatiene, polyether block amide (PEBAX), polydimethylsiloxane (PDMS) and buthylrubber.