Patents Assigned to Sophysa
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Patent number: 11197983Abstract: A device and associated method for adjusting the opening pressure of an implantable valve. The valve has a rotor of rotation axis, whose angular position determines the opening pressure. The rotor has a rotor micro-magnet movable between positions of locking and unlocking, in which positions the micro-magnet respectively prohibits and permits the rotation of the rotor. The method includes: arranging a locator to align an axis of a locator receptacle with the rotation axis and to orient the locator in an angular position; determining the angular position of the rotor about its rotation axis with respect to the locator; inserting an actuator into the locator receptacle as far as a first insertion depth; partially withdrawing the actuator from the locator receptacle as far as a second insertion depth less than the first insertion depth; rotating the actuator starting from the second insertion depth; separating the actuator from the valve.Type: GrantFiled: February 1, 2018Date of Patent: December 14, 2021Assignee: SOPHYSAInventor: Philippe Negre
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Patent number: 10357639Abstract: A drainage valve intended to be implanted and to drain the cerebrospinal fluid, including: a body defining a chamber into which there open an inlet port and an outlet port, a stopper capable of at least partially, or indeed completely, closing off the inlet port, a resilient return member exerting a resilient push force on the stopper towards the inlet port in order to open or close the port, a rotor housed in the chamber, able to rotate about an X-axis pivot and including a cam track on which the resilient return member rests such that the force exerted by the resilient return member on the stopper is modified by the rotation of the rotor.Type: GrantFiled: September 12, 2014Date of Patent: July 23, 2019Assignee: SOPHYSAInventor: Philippe Negre
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Publication number: 20160220794Abstract: A drainage valve intended to be implanted and to drain the cerebrospinal fluid, including: a body defining a chamber into which there open an inlet port and an outlet port, a stopper capable of at least partially, or indeed completely, closing off the inlet port, a resilient return member exerting a resilient push force on the stopper towards the inlet port in order to open or close the port, a rotor housed in the chamber, able to rotate about an X-axis pivot and including a cam track on which the resilient return member rests such that the force exerted by the resilient return member on the stopper is modified by the rotation of the rotor.Type: ApplicationFiled: September 12, 2014Publication date: August 4, 2016Applicant: SOPHYSAInventor: Philippe NEGRE
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Patent number: 9072865Abstract: An implantable drainage device for draining the cerebro-spinal fluid of a patient, the device including: a drainage valve including a valve member and a valve seat; a control unit suitable for modifying an operating parameter of said valve, at least as a function of a measurement (D) of the fluid flow rate through said valve; an actuator controlled by the control unit, suitable for modifying the operation of said valve as a function of said operating parameter as modified by the control unit; and a mass flowmeter suitable for evaluating said flow rate of fluid through said valve.Type: GrantFiled: March 13, 2009Date of Patent: July 7, 2015Assignee: SOPHYSAInventors: Philippe Negre, Christophe Moureaux, Christophe Boyer, Olivier Bonnal
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Patent number: 8733394Abstract: A device for mechanically locating and reading the setting of an adjustable magnetic valve for controlling the flow of a fluid in a predetermined direction (D) comprises a magnetic compass (10) and a selector (20) provided with an alignment mark (21) for aligning the magnetic compass (10) with respect to the direction (D) in which the fluid flows through the valve (V). The compass (10) comprises a reference plane and a magnetic indicator (12) which is mounted such that it can pivot in all three dimensions of space under the effect of the magnetic field of the valve, the valve setting being represented by the angle (?) formed, in the reference plane, between the magnetic indicator (12) and the alignment mark (21) when the magnetic indicator (12) is positioned perpendicular to the reference plane, the magnetic compass then being centered on the magnetic center of the valve.Type: GrantFiled: September 10, 2007Date of Patent: May 27, 2014Assignee: SophysaInventors: Philippe Negre, Christophe Moureaux, Jean-Philippe Lemaitre
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Patent number: 8630695Abstract: The invention is aimed at improving valve pinpointing and reading devices by proposing to activate a magnetic detection source allowing measurements regularly-distributed in a circle around an axis at predetermined measurement positions. An exemplary locator comprises a casing (26) provided with a mechanism for detecting and analyzing the magnetic field of the magnetic dipole of the valve. It comprises:—a magnetic detection source (36) able to detect and measure the magnetic field of the magnetic center of the valve at predetermined measurement positions distributed in a circle around an axis (X-X?), linked to—a microprocessor (32) for analyzing the measurements and for generating detection signals.Type: GrantFiled: December 14, 2007Date of Patent: January 14, 2014Assignee: SophysaInventors: Philippe Negre, Christophe Boyer, Sylvain Morel, Christophe Moureaux
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Patent number: 8177737Abstract: The present invention relates to a drainage device comprising: an internal chamber; at least one inlet port and at least one outlet port communicating with the internal chamber; a shutter disposed at least in part in the internal chamber; at least one first valve seat associated with the inlet port, the shutter being capable of bearing against the first seat in order to isolate the inlet port from the outlet port, in particular when the pressure difference between the inlet and outlet ports is less than a predetermined first opening pressure; and at least one flow constriction associated with the outlet port, the shutter being capable of shutting said constriction, while allowing a minimum, safety flow to pass at a rate that is greater than or equal to 2.5 mL/h even in a maximally-shut position, referred to as a “closed” position, which position is reached in particular for pressure differences between the inlet and outlet ports that are greater than or equal to a predetermined closure pressure.Type: GrantFiled: January 26, 2007Date of Patent: May 15, 2012Assignee: SophysaInventors: Philippe Negre, Olivier Bonnal
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Patent number: 7921571Abstract: The invention proposes a device for mechanically locating and reading the setting of an adjustable magnetic valve for controlling the flow of a fluid in a predetermined direction to locate the magnetic centre of the valve and to determine the setting of the valve. The device comprises a magnetic compass (10), an alignment mark for aligning the magnetic compass (10) with respect to the direction in which the fluid flows, a reference plane (Pr), and a magnetic indicator (12), which is mounted such that it can pivot in all three dimensions of space under the effect of the magnetic field of the valve. The magnetic indicator (12) includes at least one magnet capable of receiving a magnetic field and having a north-south direction, wherein the north-south direction is substantially perpendicular to the reference plane (Pr) when the magnetic indicator (12) is positioned substantially perpendicular to the reference plane (Pr).Type: GrantFiled: February 12, 2009Date of Patent: April 12, 2011Assignee: SophysaInventors: Christophe Moureaux, Philippe Negre
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Patent number: 7758536Abstract: A subcutaneous valve having a body defining a chamber and including an inlet orifice and an outlet orifice opening out into the chamber, a shutter member suitable for closing the inlet orifice, at least in part, a resilient return member configured to hold the shutter member against the inlet orifice to regulate the passage of liquid through said inlet orifice, and a rotor housed in the chamber having a cam-forming surface, the resilient return member bearing against the cam-forming surface of the rotor by forming a moving contact with this surface.Type: GrantFiled: June 3, 2005Date of Patent: July 20, 2010Assignee: SophysaInventors: François Cabaud, Pascal Coneau, Philippe Negre
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Publication number: 20100056980Abstract: The present invention relates to a drainage device comprising: an internal chamber; at least one inlet port and at least one outlet port communicating with the internal chamber; a shutter disposed at least in part in the internal chamber; at least one first valve seat associated with the inlet port, the shutter being capable of bearing against the first seat in order to isolate the inlet port from the outlet port, in particular when the pressure difference between the inlet and outlet ports is less than a predetermined first opening pressure; and at least one flow constriction associated with the outlet port, the shutter being capable of shutting said constriction, while allowing a minimum, safety flow to pass at a rate that is greater than or equal to 2.5 mL/h even in a maximally-shut position, referred to as a “closed” position, which position is reached in particular for pressure differences between the inlet and outlet ports that are greater than or equal to a predetermined closure pressure.Type: ApplicationFiled: January 26, 2007Publication date: March 4, 2010Applicant: SOPHYSAInventors: Philippe Negre, Olivier Bonnal
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Publication number: 20050279960Abstract: The present invention relates to a subcutaneous valve comprising: a body defining a chamber and comprising an inlet orifice and an outlet orifice opening out into the chamber; a shutter member suitable for closing the inlet orifice, at least in part; a resilient return member configured to hold the shutter member against the inlet orifice so as to regulate the passage of liquid through said inlet orifice; and a rotor housed in the chamber; wherein the rotor has a cam-forming surface, and wherein the resilient return member bears against said surface of the rotor by forming a moving contact with said surface.Type: ApplicationFiled: June 3, 2005Publication date: December 22, 2005Applicant: SophysaInventors: Francois Cabaud, Pascal Coneau, Philippe Negre
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Patent number: 5643194Abstract: A subcutaneous vane for the external regulation of fluid flow, said valve including a body comprising a substantially cylindrical and flat internal chamber having a central axis; an inlet pipe and a drain pipe formed in the lateral wall of said chamber and adapted to be connected respectively to a catheter for supplying a fluid and to a catheter for draining a fluid from said chamber; a rotor mounted in said chamber to rotate about said central axis; a non-return valve formed at the inner end of the inlet pipe and having a moveable valve element and a valve seat, said moveable valve element closing said valve when the valve element is engaged in the valve seat; a curved leaf spring fixed to said rotor generally parallel to the lateral wall of the chamber and urging the valve element into the valve seat; two micromagnets mounted in spaced relation in the motor on opposite sides of said central axis; locking means for locking the rotor in predetermined selected positions; the micromagnets being mounted to moveType: GrantFiled: June 26, 1995Date of Patent: July 1, 1997Assignee: SophysaInventor: Philippe Negre
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Patent number: 4673384Abstract: A subcutaneous valve is provided for the treatment of hydrocephalus adapted to be inserted between a ventricular catheter and a distal catheter. The valve comprises a body enclosing a chamber having formed through its cylindrical wall an inlet and outlet passage for cephalorachidian fluid. A rotor is journaled in the chamber for rotation about the chamber axis. A spring blade, fixed to the rotor extends arcuately along a cylindrical wall, bearing deflectably outwardly against a valve member and slides thereon to bias the member against a valve seat with a force depending on the angular position of the rotor and the chamber. The rotor is a disk in the form of a cut-out circular sector having a peripheral surface and two radial end surfaces. A stop means extends from a bottom wall of the chamber between the radial end surfaces of the rotor.Type: GrantFiled: April 14, 1986Date of Patent: June 16, 1987Assignee: SophysaInventor: Bernard Marion
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Patent number: 4443214Abstract: This valve adapted to be inserted between a ventricular catheter and a draining catheter comprises a body of flattened cylindrical shape enclosing a chamber having formed through its cylindrical wall an inlet passage for introducing the cephalorachidian fluid and an outlet passage for discharging this fluid. At the inner end of the inlet passage a frustoconical seat engageable by a ball valve acting as a non-return valve is provided, this ball valve being urged against the seat by a curved spring blade extending along the lateral inner wall of the chamber and mounted preferably in overhanging relationship on a diameter bar of magnetic material mounted in turn for concentric rotation on a pivot pin extending across the chamber. A tooth carried by the bar end opposite the spring blade is adapted to engage detent-positioning dents formed in the lateral wall of the chamber.Type: GrantFiled: February 5, 1982Date of Patent: April 17, 1984Assignee: Society dite: sophysaInventor: Bernard Marion