Patents by Inventor An Nguyen-Dinh

An Nguyen-Dinh 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).

  • Patent number: 10987524
    Abstract: An interstitial ultrasound thermal ablation applicator for conformal treatment of an inhomogeneous tumor lesion includes: a body having a longitudinal axis; and a plurality of array transducers mounted on the body, arranged side by side and having azimuth directions parallel to the longitudinal axis of the body, and having outer faces disposed in a polygonal arrangement; the plurality of array transducers having predetermined elevation dimensions defined for directing emitted ultrasonic energy to obtain a conformal volume treatment of the tumor lesions. An electronic driving method for driving an applicator having multiple independent transducer elements arranged in rows and columns includes: controlling focal parameters of each row and column of transducer elements; and controlling a contribution of each row and column of transducer elements in a manner to provide a conformal ablated volume.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: April 27, 2021
    Inventors: Alexandre Carpentier, An Nguyen-Dinh, Jean-Yves Chapelon, Rémi Dufait, Christophe Notard, Françoise Chavrier, Cyril Lafon, Michael Canney, William Apoutou N'Djin
  • Patent number: 10967151
    Abstract: A steerable catheter comprises a mobile tube and an intermediate tube, coaxial with each other, which extend from a proximal end to a distal end of the catheter and are telescopically mounted into each other with possibility of mutual rotation and axial translation. The mobile tube comprises a central lumen extending from the proximal end to the distal end. The intermediate tube comprises, along its whole length, a longitudinal notch radially offset in a direction of offset with respect to the axis of the steerable catheter and extending axially from the proximal end to the distal end. The longitudinal notch contains a cable adapted to undergo a traction exerted from the proximal end, the traction generating a bending of the steerable catheter directed towards the offset direction. The steerable catheter further comprises around the intermediate tube a sealed external sheath surrounding the intermediate tube over its periphery and covering the longitudinal notch over its length.
    Type: Grant
    Filed: January 1, 2019
    Date of Patent: April 6, 2021
    Assignee: CAIRDAC
    Inventors: Willy Regnier, Florian Leveque, Julien Dohin, Jean-Baptiste Pourchet, Perrine Chaffotte, An Nguyen-Dinh
  • Publication number: 20200384273
    Abstract: A receiver module of an autonomous implanted capsule receives a human body communication, HBC, signal sensed by an electrode in contact with body tissues or fluids of a patient. The signal is a pulse-modulated, baseband PPM pulse signal. The receiver module comprises a non-linear LNA amplifier stage comprising a pair of complementary transistors arranged as a voltage inverter circuit with an input coupled to the modulated-input-signal collecting electrode. The amplifier stage input is polarized to an intermediate operating point voltage between a supply voltage of the complementary transistor pair and a ground voltage. The amplifier stage has a gain of at least 40 dB, a gain-bandwidth product of at least 20 MHz, and a consumption lower than or equal to 100 nW.
    Type: Application
    Filed: June 6, 2019
    Publication date: December 10, 2020
    Inventors: Alaa Makdissi, An Nguyen-Dinh
  • Publication number: 20200360664
    Abstract: The bending of the catheter is controlled from the handle by a variable tension exerted to a steering cable housed in an offset longitudinal notch of the catheter. The handle comprises: a body adapted to be held in hand by an operator; a piston, axially mobile in rotation and in translation inside the handle body; a first mechanism with a pulley for the winding of the steering cable and a lever for modifying in a controlled manner the tension of the cable and hence controlling the steering of the catheter; and a second mechanism comprising a member for holding a security wire and a member for adjusting the axial position of this wire with respect to the internal tube of the catheter, so as to keep the security wire in tight condition whatever the bend provided to the catheter by operation of the first mechanism.
    Type: Application
    Filed: May 18, 2019
    Publication date: November 19, 2020
    Inventors: Willy REGNIER, An NGUYEN-DINH
  • Publication number: 20200338241
    Abstract: The implantable medical device comprises an elongated composite tubular body comprising a tubular part made of a biocompatible and RF wave permeable dielectric material and a tubular part made of a biocompatible metallic material. The dielectric tubular part and the metallic tubular part are arranged end-to-end at their interface against the respective planar end faces thereof, without being fit into each other. The interface comprises a planar brazing sealing to each other the two opposite respective planar end faces of the dielectric material tubular part and of the metallic material tubular part. With a dielectric material that is a high-purity alumina ceramic and a metallic material that is titanium, the brazing is obtained by gold brazing on a Ti—Nb primer metallization layer deposited on the planar end face of the dielectric material tubular part.
    Type: Application
    Filed: April 26, 2019
    Publication date: October 29, 2020
    Inventors: Willy Regnier, An Nguyen-Dinh
  • Publication number: 20200289830
    Abstract: The energy harvesting module is provided with a pendular unit comprising an inertial mass coupled to an elastic piezoelectric beam providing a power voltage. An acceleration sensor provides a signal representative of the instantaneous acceleration of the beam in a direction perpendicular to a surface of the beam, and an angular speed sensor provides a signal representative of the instantaneous angular speed of rotation of the beam about an axis perpendicular to a plane of bending of the beam. Based on the voltage, acceleration and angular speed values, a beam integrity monitoring circuit estimates parameters of a mechanical-electrical transfer function and derives therefrom metrics representative of physical and electrical parameters of the pendular unit and of the material of the beam. This makes it possible to evaluate the proper operation of the energy harvester and to detect a potential performance decrease liable to lead to a failure in the more or less short term.
    Type: Application
    Filed: March 12, 2019
    Publication date: September 17, 2020
    Inventors: Alaa Makdissi, An Nguyen-Dinh
  • Publication number: 20200259427
    Abstract: An autonomous implantable capsule comprises a capsule body provided with an element for its anchoring to a patient's organ. An electronic unit is powered by an energy harvesting module provided with a pendular unit comprising an inertial mass coupled to an elastic piezoelectric beam forming a mechanical-electrical transducer for converting into electrical energy the oscillations of the beam. A mobile support, integral with the clamped end of the beam and mobile in axial rotation about the axis of the capsule body, can be directed by a controllable driver to adjust the angular position of the support so as to maximize the produced electrical power converted by the mechanical-electrical transducer.
    Type: Application
    Filed: February 7, 2019
    Publication date: August 13, 2020
    Inventors: An NGUYEN-DINH, Alaa Makdissi, Willy Regnier
  • Publication number: 20200220067
    Abstract: A piezoelectric bimorph cantilever beam system includes a shim having a first main surface, a second main surface opposite the first main surface, a proximal end connected to an anchor, and a distal end opposite the proximal end. The system further includes a first piezoelectric layer laminated on the first main surface of the shim and a second piezoelectric layer laminated on the second main surface of the shim. A first beam stiffener is provided over the first main surface of the shim adjacent to the anchor with the first beam stiffener at least partially covering the first piezoelectric layer. A second beam stiffener is provided over the second main surface of the shim adjacent to the anchor with the second beam stiffener at least partially covering the second piezoelectric layer.
    Type: Application
    Filed: July 5, 2018
    Publication date: July 9, 2020
    Inventors: Libor RUFER, Skandar BASROUR, Emilie TRIOUX, Guillaume FÉRIN, Claire BANTIGNIES, Hung LE KHANH, Bogdan ROSINSKI, An NGUYEN-DINH
  • Publication number: 20200206465
    Abstract: A steerable catheter comprises a mobile tube and an intermediate tube, coaxial with each other, which extend from a proximal end to a distal end of the catheter and are telescopically mounted into each other with possibility of mutual rotation and axial translation. The mobile tube comprises a central lumen extending from the proximal end to the distal end. The intermediate tube comprises, along its whole length, a longitudinal notch radially offset in a direction of offset with respect to the axis of the steerable catheter and extending axially from the proximal end to the distal end. The longitudinal notch contains a cable adapted to undergo a traction exerted from the proximal end, the traction generating a bending of the steerable catheter directed towards the offset direction. The steerable catheter further comprises around the intermediate tube a sealed external sheath surrounding the intermediate tube over its periphery and covering the longitudinal notch over its length.
    Type: Application
    Filed: January 1, 2019
    Publication date: July 2, 2020
    Inventors: Willy Regnier, Florian Leveque, Julien Dohin, Jean-Baptiste Pourchet, Perrine Chaffotte, An Nguyen-Dinh
  • Publication number: 20200164215
    Abstract: A capsule includes a tubular body with, at its proximal end, a coupling member adapted to cooperate with a conjugated coupling member mounted at the distal end of a catheter of the implantation tool, for the transmission of a torque for the rotational driving of the capsule by the catheter. The coupling member of the tool includes a dihedral-shaped imprint, with two diverging arms in a V-arrangement, and the capsule coupling member includes a convex surface adapted to frictionally and slidingly urge against the diverging arms of the V-shape.
    Type: Application
    Filed: October 16, 2019
    Publication date: May 28, 2020
    Inventors: An NGUYEN-DINH, Willy REGNIER
  • Publication number: 20200094048
    Abstract: The capsule includes a tubular body and a front-end unit including an anchoring member for the anchoring of the capsule to a wall of a patient's organ. The front-end unit is mobile in relative axial rotation with respect to the tubular body, and a disengageable coupling member is adapted to allow this relative rotation when the tubular body receives an external rotational stress, the anchoring member then exerting a reaction torque higher than a predetermined threshold torque, and to prevent the relative rotation in the absence of external rotational stress applied to the tubular body. The coupling member may in particular include, between the front-end unit and the tubular body, a friction interface, with an elastically deformable element applying an axial compression between a bearing face of the tubular body and a support ring integral with the anchoring member.
    Type: Application
    Filed: August 7, 2019
    Publication date: March 26, 2020
    Inventors: Willy Regnier, An NGUYEN-DINH
  • Publication number: 20190328360
    Abstract: An ultrasound transducer includes a first piezoelectric layer stacked on a second piezoelectric layer to form a stack. The first piezoelectric layer has one major face metallized to form a first array of electrodes and the other major face metallized to form a first ground electrode. The second piezoelectric layer has one major face metallized to form a second array of electrodes and the other major face metallized to form a second ground electrode, the second array of electrodes oriented at an angle to the first array of electrodes. The second piezoelectric layer has a thickness such that an overall thickness of the stack is equal to an uneven number of half-wavelengths of an acoustic wave to be generated when the first piezoelectric layer and the second piezoelectric layer are independently operated. The ultrasound transducer also includes an acoustic impedance adaptation layer, an acoustic damping layer, and a stiffener.
    Type: Application
    Filed: April 30, 2019
    Publication date: October 31, 2019
    Inventors: Guillaume Ferin, Martin Flesch, Marie-Coline Dumoux, David Voisin, Mathieu Legros, An Nguyen-Dinh
  • Patent number: 10097112
    Abstract: A vibrational multi-morph piezoelectric energy harvester includes a composite shim having a parallelepiped form with a thickness dimension made smaller than width and length dimensions, and having a stiffness shifting from one extremity to the other extremity to minimize mechanical constraints developed at a clamping area; a seismic mass mounted at an end opposite to the clamping area to mechanically match the system to the surrounding vibration resonance; one or more piezoelectric layers laminated on said composite shim; and electrodes plated onto the one or more piezoelectric layers for connection to an electronic harvesting circuit, a battery, or a super capacitor.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: October 9, 2018
    Assignee: VERMON S.A.
    Inventors: An Nguyen-Dinh, Guillaume Ferin, Claire Bantignies, Hung Le Khanh, Cyril Meynier, Etienne Flesch
  • Publication number: 20180036558
    Abstract: An interstitial ultrasound thermal ablation applicator for conformal treatment of an inhomogeneous tumor lesion includes: a body having a longitudinal axis; and a plurality of array transducers mounted on the body, arranged side by side and having azimuth directions parallel to the longitudinal axis of the body, and having outer faces disposed in a polygonal arrangement; the plurality of array transducers having predetermined elevation dimensions defined for directing emitted ultrasonic energy to obtain a conformal volume treatment of the tumor lesions. An electronic driving method for driving an applicator having multiple independent transducer elements arranged in rows and columns includes: controlling focal parameters of each row and column of transducer elements; and controlling a contribution of each row and column of transducer elements in a manner to provide a conformal ablated volume.
    Type: Application
    Filed: October 20, 2017
    Publication date: February 8, 2018
    Inventors: Alexandre CARPENTIER, An NGUYEN-DINH, Jean-Yves CHAPELON, Rémi DUFAIT, Christophe NOTARD, Françoise CHAVRIER, Cyril LAFON, Michael CANNEY, William Apoutou N'DJIN
  • Patent number: 9816964
    Abstract: An ultrasonic non-destructive testing method and device for rail applications uses a plurality of phased array transducers to inspect aluminothermit weld defects located in a head portion, a web portion, an ankle portion, and a toe portion of a weld of a rail section. The method includes: scanning the head portion of the weld including: a first phased array transducer positioned above the weld and a second phased array transducer positioned a distance from the first phased array transducer to provide inclined access to the weld; and scanning the toe portion of the weld including: positioning pairs of third, fourth, and fifth phased array transducers on a surface of the toe portion, such that the pairs of third, fourth and fifth phased array transducers are disposed symmetrically with one of the pair on each side of the toe portion.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: November 14, 2017
    Assignee: Vermon S.A.
    Inventors: An Nguyen-Dinh, Stephane Michau, Christopher Spree, Simon-Peter Santospirito, Aasim Khalid
  • Publication number: 20170257040
    Abstract: A vibrational multi-morph piezoelectric energy harvester includes a composite shim having a parallelepiped form with a thickness dimension made smaller than width and length dimensions, and having a stiffness shifting from one extremity to the other extremity to minimize mechanical constraints developed at a clamping area; a seismic mass mounted at an end opposite to the clamping area to mechanically match the system to the surrounding vibration resonance; one or more piezoelectric layers laminated on said composite shim; and electrodes plated onto the one or more piezoelectric layers for connection to an electronic harvesting circuit, a battery, or a super capacitor.
    Type: Application
    Filed: March 1, 2016
    Publication date: September 7, 2017
    Inventors: An NGUYEN-DINH, Guillaume FERIN, Claire BANTIGNIES, Hung LE KHANH, Cyril MEYNIER, Etienne FLESCH
  • Patent number: 9579081
    Abstract: A device for a bimodal diagnostic probe with optical and ultrasonic imaging, the probe including a main body supporting an ultrasonic transducer at its front end. The device includes a shell, an illumination mechanism mounted on a front end of the shell to light outside of the shell, and a collection or detection mechanism mounted on the front end of the shell to collect or detect an optical signal produced outside the shell. The shell includes an attachment mechanism to reversibly assemble it around the main body of the probe, with the illumination mechanism and the collection or detection mechanism mounted on the shell.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: February 28, 2017
    Assignees: Commissariat à l'énergie atomique et aux énergies alternatives, SA VERMON
    Inventors: Jérôme Boutet, An Nguyen-Dinh, Mathieu Debourdeau, Odile Messineo, Christophe Notard
  • Publication number: 20140257262
    Abstract: An interstitial ultrasound thermal ablation applicator for conformal treatment of inhomogeneous tumor lesions includes: a body having a longitudinal axis, the body defining a hollow central channel along the longitudinal axis; and a plurality of CMUT array transducers mounted on the body, arranged side by side to form a cylindrical shape, having azimuth plans parallel to a longitudinal axis of the body, each of the plurality of CMUT array transducers having elevation dimensions predetermined to steer emitted ultrasonic waves to obtain a conformal volume treatment of the tumor lesions. An electronic driving method for driving an applicator having multiple independent transducer elements arranged in rows and columns includes: controlling focal parameters of each row and column of transducer elements; and controlling a contribution of each row and column of transducer elements in a manner to provide a conformal ablated volume.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 11, 2014
    Inventors: Alexandre CARPENTIER, An NGUYEN-DINH, Jean-Yves CHAPELON, Rémi DUFAIT, Christophe NOTARD, Françoise CHAVRIER, Cyril LAFON, Michael CANNEY, William Apoutou N'DJIN
  • Publication number: 20140187958
    Abstract: A device for a bimodal diagnostic probe with optical and ultrasonic imaging, the probe including a main body supporting an ultrasonic transducer at its front end. The device includes a shell, an illumination mechanism mounted on a front end of the shell to light outside of the shell, and a collection or detection mechanism mounted on the front end of the shell to collect or detect an optical signal produced outside the shell. The shell includes an attachment mechanism to reversibly assemble it around the main body of the probe, with the illumination mechanism and the collection or detection mechanism mounted on the shell.
    Type: Application
    Filed: June 7, 2012
    Publication date: July 3, 2014
    Applicants: SA VERMON, COMMISSARIAT A I'ENERGIE ATOMIQUE ET AUX ENE ALT
    Inventors: Jérôme Boutet, An Nguyen-Dinh, Mathieu Debourdeau, Odile Messineo, Christophe Notard
  • Patent number: 8456958
    Abstract: A capacitive micro-machined ultrasonic transducer (CMUT) array includes an improved elementary aperture for imaging operations. The transducer can be of a linear, curved linear, annular, matrix or even single surface configuration. The elementary apertures thereof are formed by a specific arrangement of capacitive micromachined membranes (CMM) so as to exhibit ideal acoustical and electrical behavior when operated with imaging systems. The CMM arrangements can be either conventional where the element transducers of the array are uniformly shaped by predefined CMMs in a manner such as to exhibit acoustic behavior similar to a piezoelectric transducer, or can be more sophisticated, wherein each element transducer is formed by a specific combination of different CMMs (i.e., of a different size and/or shape) so as to provide the transducer with built-in acoustic apodization that can be implemented in the azimuth and/or elevation dimension of the device.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: June 4, 2013
    Assignee: Vermon S.A.
    Inventors: Nicolas Felix, Aimé Flesch, Remi Dufait, An Nguyen-Dinh