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: 11691020
    Abstract: The implant comprises a tubular body housing an energy harvesting module adapted to convert external stresses applied to the implant into electrical energy, and a rechargeable battery adapted to be charged by the energy harvesting module. During the storage, an external source physically separated from the implant is coupled to the implant rechargeable battery to maintain a minimum battery charge level. An interface circuit of the implant couples surface electrodes to the battery, with switching between: i) a transport and storage configuration where the electrodes are connected to the external source to receive from the latter a battery charging energy and/or to exchange communication signals with the outside through the wire link of the coupling; and ii) a functional configuration in which the surface electrodes are decoupled from the external source after the implant has been implanted.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: July 4, 2023
    Assignee: Cairdac
    Inventors: Alaa Makdissi, Willy Regnier, An Nguyen-Dinh
  • Publication number: 20230201578
    Abstract: The device, such as an autonomous cardiac implant of the leadless capsule type, has a device body with a means for its anchoring to a patient's organ wall. The anchoring means includes a screw with a helix wire wound into a plurality of non-contiguous turns, the screw having a clamped end integral with the front face of the device body and a free end with a beveled end defined by at least one oblique surface. The normal to the oblique surface of the beveled end is directed away from the front face, in such a way that the oblique surface is directed towards the patient's organ wall. The normal to the oblique surface forms an angle between 30° and 60° with respect to the helix axis, and the screw is elastically deformable in axial compression, with a stiffness coefficient of at most 5 N/mm.
    Type: Application
    Filed: November 8, 2022
    Publication date: June 29, 2023
    Applicant: CAIRDAC S.A.S.
    Inventors: Willy REGNIER, An NGUYEN-DINH
  • Publication number: 20230201579
    Abstract: The device has a device body with a front face at its distal end, and a means for the anchoring of the medical device to a patient's organ wall. The anchoring means includes a screw with a helix wire wound into a plurality of non-contiguous turns, the screw having a clamped end integral with the front face of the device body and a free end with a beveled end defined by at least one oblique surface. The helix wire includes, at its free distal end, a terminal region whose wire bending stiffness is lower than in a proximal region of the helix turns. The stiffness difference may, in particular, be obtained by varying the wire diameter over different successive portions, with decreasing diameters in a proximal to distal direction.
    Type: Application
    Filed: November 8, 2022
    Publication date: June 29, 2023
    Applicant: CAIRDAC S.A.S.
    Inventors: Willy REGNIER, An NGUYEN-DINH
  • Patent number: 11684790
    Abstract: The implant comprises a tubular body housing an energy harvesting module adapted to convert external stresses applied to the implant into electrical energy, and a rechargeable battery adapted to be charged by the energy harvesting module. During the storage, an external source physically separated from the implant is coupled to the implant rechargeable battery to maintain a minimum battery charge level. An interface circuit of the implant couples surface electrodes to the battery, with switching between: i) a transport and storage configuration where the electrodes are connected to the external source to receive from the latter a battery charging energy and/or to exchange communication signals with the outside through the wire link of the coupling; and ii) a functional configuration in which the surface electrodes are decoupled from the external source after the implant has been implanted.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: June 27, 2023
    Assignee: Cairdac
    Inventors: Alaa Makdissi, Willy Regnier, An Nguyen-Dinh
  • Publication number: 20230189014
    Abstract: A method and a device for selecting a node in a local area network comprising nodes allowing an extension of wireless communication coverage, the nodes being interconnected by an access point interface of a backhaul subnetwork and a client interface of the backhaul subnetwork of another node, each node of the backhaul subnetwork emitting at least one wireless network called a fronthaul network, to associate itself with the local area network an item of equipment obtains, from each node allowing an extension of wireless communication coverage, information comprising at least one item of information representing the hierarchical level of the node and an item of information indicating whether the client interface of the backhaul subnetwork is connected to an access-point interface of the backhaul subnetwork of a node of a higher hierarchical level, selects, from the information obtained, the node allowing an extension of wireless communication coverage with which the equipment associates itself.
    Type: Application
    Filed: November 18, 2022
    Publication date: June 15, 2023
    Applicant: SAGEMCOM BROADBAND SAS
    Inventors: Michaël Thien Bao NGUYEN DINH HIEN, Massinissa LALAM
  • Patent number: 11654290
    Abstract: This module comprises: a circuit for interfacing with the piezoelectric beam of an oscillating pendular unit, outputting a rectified signal comprising a sequence of pulses at a frequency equal to a multiple of the oscillation frequency of the pendular unit; a buffer capacitor charged by the successive pulses outputted by the interface circuit; and a converter regulator adapted to convert a capacitor discharge current into a stabilized power supply voltage, and controlled by a feedback control stage of the Maximum Power-Point Tracking (MPPT) type. A comparator detects the conduction of a blocking diode interposed between the interface circuit and the capacitor, in order to produce a signal representative of the current value of the duty cycle of the detected conduction and non-conduction periods.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: May 23, 2023
    Assignee: CAIRDAC
    Inventors: Alaa Makdissi, An Nguyen-Dinh
  • Patent number: 11626816
    Abstract: An integrated self-sustainable power supply includes a piezoelectric energy harvesting (PEH) beam, a power management unit (PMU) circuit located on the PEH beam, a rechargeable battery located on the PEH beam, and a positive regulated power supply output and a negative regulated power supply output. The PMU circuit includes electrical inputs/outputs. The rechargeable battery includes a negative access pad and a positive access pad, which are in electrical communication with the electrical inputs/outputs of the PMU circuit. The positive regulated power supply output and the negative regulated power supply output are also in electrical communication with the electrical inputs/outputs of the PMU circuit.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: April 11, 2023
    Assignee: CAIRDAC
    Inventors: An Nguyen-Dinh, Etienne Flesch, Igor Bimbaud, Bogdan Rosinski
  • Patent number: 11602637
    Abstract: The capsule comprises a tubular body and a front-end unit with an helical screw for anchoring 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. A disengageable frictional coupling member allows this relative rotation when, for implantation, the tubular body receives an external rotational stress, and that until a predetermined limit torque triggering the disengagement. At explantation, this disengagement is prevented to allow a joint rotation of the tubular body and of the front-end unit and the unscrewing of the helical screw. It is provided for that purpose two conjugated plates facing each other, with flat surfaces such as circular sectors offset in opposite directions with respect to a radial reference plane, in such a way as to form steps providing an anti-disengagement abutment function.
    Type: Grant
    Filed: November 17, 2021
    Date of Patent: March 14, 2023
    Assignee: CAIRDAC
    Inventors: Willy Regnier, An Nguyen-Dinh
  • Publication number: 20230061434
    Abstract: A module includes a pendular unit with piezoelectric transducer elastically deformable in bending with a clamped end and a free end coupled to an inertial mass. The piezoelectric transducer includes at least one piezoelectric beam configured into two adjacent arms formed single-piece, with an external arm and an internal arm arranged side-by-side. The external arm has a clamped proximal end and a free distal end, and the internal arm has a free proximal end supporting the inertial mass, and a free distal end connected to the distal end of the adjacent external arm. An annular mount surrounds the beam at its proximal end and includes the clamp to which is fastened the proximal end of the external arm. The mount includes, in a central region in the vicinity of the clamp, a cavity inside which the inertial mass carried by the free proximal end of the internal arm can oscillate.
    Type: Application
    Filed: June 10, 2022
    Publication date: March 2, 2023
    Applicant: CAIRDAC
    Inventors: Alaa Makdissi, Willy Regnier, An Nguyen-Dinh, Julien Dohin, Steeven Vassal, Thien Hoang
  • Publication number: 20230067017
    Abstract: In one example in accordance with the present disclosure, a system is described. The system includes a reader to extract cleaning instructions associated with a three-dimensional (3D) printed object. The cleaning instructions include a termination condition to indicate when object cleaning is complete. The system also includes a controller to instruct at least one cleaning device to clean the 3D printed object based on the cleaning instructions. A measurement system of the system determines when the termination condition is met.
    Type: Application
    Filed: February 27, 2020
    Publication date: March 2, 2023
    Applicants: Hewlett-Packard Development Company, L.P., Nanyang Technological University
    Inventors: Jonathan Munir SALFITY, William J. ALLEN, Huy NGUYEN DINH, Nicholas ADRIAN, Joyce Xin Yan LIM, Quang-Cuong PHAM
  • Publication number: 20230064083
    Abstract: An energy harvesting module includes a pendular unit with piezoelectric transducer elastically deformable in bending between a clamped end and a free end coupled to an inertial mass. The piezoelectric transducer includes two coplanar piezoelectric beams arranged side-by-side on either side of a central axis of the transducer, each of the piezoelectric beams including adjacent external and internal arms, arranged side-by-side and formed single-piece. The external arm of each beam has a clamped proximal end and a free distal end, and the internal arm of each beam has a free proximal end supporting the inertial mass, and a free distal end connected to the distal end of the adjacent external arm by a common junction.
    Type: Application
    Filed: June 11, 2022
    Publication date: March 2, 2023
    Applicant: CAIRDAC
    Inventors: Alaa Makdissi, Willy Regnier, An Nguyen-Dinh, Julien Dohin, Steeven Vassal, Thien Hoang
  • Publication number: 20220413949
    Abstract: Method for communicating via an API, comprising the steps of: producing a structural description (14) of each version of the transaction; producing a signature (13) which is representative of the structural description of the version; defining and saving an object (11) comprising the signature (13) and the structural description (14) of the version; causing a transmitting software entity (E) to transmit a current message of a current version of the transaction and a current signature of the current version; causing a receiving software entity (R) to receive the current message and the current signature; causing the receiving software entity to identify an object having a signature identical to the current signature, and decoding the current message using the structural description of the object.
    Type: Application
    Filed: September 11, 2020
    Publication date: December 29, 2022
    Inventors: Michaël Thien Bao NGUYEN DINH HIEN, Jean-Philippe JAULIN
  • Patent number: 11496071
    Abstract: The module comprises a pendular unit with an elastically deformable piezoelectric beam having a clamped end and an opposite, free end, coupled to an inertial mass. The beam produces an oscillating electrical signal collected by electrodes, which is rectified and regulated to output a voltage for charging a battery. The number and configuration of the electrodes (T1, T2, B1, B2, N) carried by the piezoelectric beam define a plurality of pairs of electrodes between which a corresponding plurality of said oscillating signals can be simultaneously collected. A switching matrix, as a function of an input command, selectively switches the plurality of pairs of electrodes between each other according to a plurality of different series (S), parallel (P) and/or series-parallel (SP) configurations, the selected configuration being that which maximizes the power sent to the battery as a function of the voltage level (VBAT) present at the terminals of the latter.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: November 8, 2022
    Assignee: CAIRDAC
    Inventors: Alaa Makdissi, An Nguyen-Dinh
  • Publication number: 20220305272
    Abstract: This module comprises: a circuit for interfacing with the piezoelectric beam of an oscillating pendular unit, outputting a rectified signal comprising a sequence of pulses at a frequency equal to a multiple of the oscillation frequency of the pendular unit; a buffer capacitor charged by the successive pulses outputted by the interface circuit; and a converter regulator adapted to convert a capacitor discharge current into a stabilized power supply voltage, and controlled by a feedback control stage of the Maximum Power-Point Tracking (MPPT) type. A comparator detects the conduction of a blocking diode interposed between the interface circuit and the capacitor, in order to produce a signal representative of the current value of the duty cycle of the detected conduction and non-conduction periods.
    Type: Application
    Filed: October 18, 2021
    Publication date: September 29, 2022
    Inventors: Alaa Makdissi, An Nguyen-Dinh
  • Publication number: 20220288402
    Abstract: The capsule comprises a tubular body and a front-end unit with an helical screw for anchoring 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. A disengageable frictional coupling member allows this relative rotation when, for implantation, the tubular body receives an external rotational stress, and that until a predetermined limit torque triggering the disengagement. At explantation, this disengagement is prevented to allow a joint rotation of the tubular body and of the front-end unit and the unscrewing of the helical screw. It is provided for that purpose two conjugated plates facing each other, with flat surfaces such as circular sectors offset in opposite directions with respect to a radial reference plane, in such a way as to form steps providing an anti-disengagement abutment function.
    Type: Application
    Filed: November 17, 2021
    Publication date: September 15, 2022
    Inventors: Willy Regnier, An Nguyen-Dinh
  • Patent number: 11387403
    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: Grant
    Filed: July 5, 2018
    Date of Patent: July 12, 2022
    Assignees: VERMON S.A., UNIVERSITE GRENOBLE ALPES
    Inventors: Libor Rufer, Skandar Basrour, Emilie Trioux, Guillaume Férin, Claire Bantignies, Hung Le Khanh, Bogdan Rosinski, An Nguyen-Dinh
  • Publication number: 20220203102
    Abstract: The implant comprises a tubular body housing an energy harvesting module adapted to convert external stresses applied to the implant into electrical energy, and a rechargeable battery adapted to be charged by the energy harvesting module. During the storage, an external source physically separated from the implant is coupled to the implant rechargeable battery to maintain a minimum battery charge level. An interface circuit of the implant couples surface electrodes to the battery, with switching between: i) a transport and storage configuration where the electrodes are connected to the external source to receive from the latter a battery charging energy and/or to exchange communication signals with the outside through the wire link of the coupling; and ii) a functional configuration in which the surface electrodes are decoupled from the external source after the implant has been implanted.
    Type: Application
    Filed: September 28, 2021
    Publication date: June 30, 2022
    Inventors: Alaa Makdissi, Willy Regnier, An Nguyen-Dinh
  • Publication number: 20220203101
    Abstract: The implant comprises a tubular body housing an energy harvesting module adapted to convert external stresses applied to the implant into electrical energy, and a rechargeable battery adapted to be charged by the energy harvesting module. During the storage, an external source physically separated from the implant is coupled to the implant rechargeable battery to maintain a minimum battery charge level. An interface circuit of the implant couples surface electrodes to the battery, with switching between: i) a transport and storage configuration where the electrodes are connected to the external source to receive from the latter a battery charging energy and/or to exchange communication signals with the outside through the wire link of the coupling; and ii) a functional configuration in which the surface electrodes are decoupled from the external source after the implant has been implanted.
    Type: Application
    Filed: September 28, 2021
    Publication date: June 30, 2022
    Inventors: Alaa Makdissi, Willy Regnier, An Nguyen-Dinh
  • Publication number: 20220193425
    Abstract: The implant comprises a tubular body housing an energy harvesting module adapted to convert external stresses applied to the implant into electrical energy, by means of an inertial pendular unit comprising an elastically deformable element coupled to an inertial mass, as well as a rechargeable battery adapted to be recharged by the energy harvesting module, the battery being previously charged at an initial charge level. The accessory comprises an external source of electrical energy for the temporary storage of an electrical energy during the transportation and storage of the implant, the external source being physically separated from the implant. A temporary electrical coupling link from the external source to the implant rechargeable battery ensures a power supply of the rechargeable battery by the external source and hence maintains, during the whole transportation and storage duration before implantation, a battery charge level higher than a minimum predetermined level.
    Type: Application
    Filed: September 1, 2021
    Publication date: June 23, 2022
    Inventors: Alaa Makdissi, Willy Regnier, An Nguyen-Dinh
  • Patent number: 11364365
    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: Grant
    Filed: May 18, 2019
    Date of Patent: June 21, 2022
    Assignee: CAIRDAC
    Inventors: Willy Regnier, An Nguyen-Dinh