Patents by Inventor Lawrence Farhat

Lawrence Farhat 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: 10537452
    Abstract: A stent delivery system can include a core member, first and second restraints, and a stent engagement component. The core member can have a distal segment. The first and second restraints can be coupled to the core member distal segment and axially spaced apart from each other to provide an axial gap. The first and second restraints can each have an outer profile that tapers radially inwardly in directions away from the gap. The stent engagement component can be at least partially disposed in the axial gap between the first and second restraints such that the component is slidably and rotatably coupled to the core member distal segment.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: January 21, 2020
    Assignee: COVIDIEN LP
    Inventors: Kenneth Brown, Ghislain Sema, Michael Losordo, Evan Epstein, Gabriel Newell, Andy Huynh, Lawrence Farhat
  • Publication number: 20190357925
    Abstract: A system can comprise a catheter and a device having an elongate member and an expandable member. The expandable member can be coupled to the elongate member. The elongate member can extend through the catheter. The expandable member can be positioned with a proximal member end proximal to a distal catheter end, a distal member end positioned distal to the distal catheter end, and at least a portion of the expandable member between the distal catheter end and the distal member end in an expanded state in which a maximum transverse dimension of the expandable member is larger than a maximum transverse dimension of the distal member end. The catheter can be advanced in a patient's body with the expandable structure, in the expanded state, at the distal end of the catheter.
    Type: Application
    Filed: August 7, 2019
    Publication date: November 28, 2019
    Inventors: Lawrence Farhat, Andy Huynh
  • Patent number: 10489617
    Abstract: Inductive identification systems and methods are described. The system may include an inductive detector configured to identify objects having inductive identifiers. An inductive detector may include conductive coils and inductance readout circuitry for measuring an inductance of each coil. An inductive identifier may include a conductive pattern configured to induce a desired inductance in the coils of the inductive detector. An inductive identifier may include a film having openings, each opening configured to be disposed over a corresponding coil to induce differing inductance changes in the corresponding coils. A pattern of inductance values may be determined and used to identify the object. The detector may be implemented in a cassette recess of an infusion pump system. The inductive identifier may be disposed on a pump cassette configured to be received in the cassette recess and identified based on an inductive interaction between the inductive detector coils and the inductive identifier.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: November 26, 2019
    Assignee: CAREFUSION 303, INC.
    Inventors: Mooneer Thabet Salem, Lawrence Farhat
  • Patent number: 10413309
    Abstract: A system can comprise a catheter and a device having an elongate member and an expandable member. The expandable member can be coupled to the elongate member. The elongate member can extend through the catheter. The expandable member can be positioned with a proximal member end proximal to a distal catheter end, a distal member end positioned distal to the distal catheter end, and at least a portion of the expandable member between the distal catheter end and the distal member end in an expanded state in which a maximum transverse dimension of the expandable member is larger than a maximum transverse dimension of the distal member end. The catheter can be advanced in a patient's body with the expandable structure, in the expanded state, at the distal end of the catheter.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: September 17, 2019
    Assignee: Covidien LP
    Inventors: Lawrence Farhat, Andy Huynh
  • Publication number: 20190247570
    Abstract: Systems and methods of micro-infusion of medical fluids are disclosed. Micro-infusion systems may include a pump, a patient interface, tubing between the pump and the interface, and a micro-infusion device along the tubing. A first portion of the tubing above the micro-infusion device is longer than a second portion of the tubing below the device. The micro-infusion device may include a chamber in-line with the tubing, a first valve between the chamber and the first portion of the tubing, a second valve between the chamber and the second portion of the tubing and a third valve between the chamber and a dump chamber. The second valve may be slidably disposed within the chamber. A medical fluid may be provided into the chamber that slides the second valve displacing another fluid in the chamber through the third valve into the dump chamber.
    Type: Application
    Filed: April 24, 2019
    Publication date: August 15, 2019
    Inventors: Edward BROWKA, James FENTRESS, Lawrence FARHAT, Robert VASKO, Theodore MOSLER, David FOSHEE, George MANSOUR
  • Patent number: 10314966
    Abstract: Systems and methods of micro-infusion of medical fluids are disclosed. Micro-infusion systems may include a pump, a patient interface, tubing between the pump and the interface, and a micro-infusion device along the tubing. A first portion of the tubing above the micro-infusion device is longer than a second portion of the tubing below the device. The micro-infusion device may include a chamber in-line with the tubing, a first valve between the chamber and the first portion of the tubing, a second valve between the chamber and the second portion of the tubing and a third valve between the chamber and a dump chamber. The second valve may be slidably disposed within the chamber. A medical fluid may be provided into the chamber that slides the second valve displacing another fluid in the chamber through the third valve into the dump chamber.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: June 11, 2019
    Assignee: CAREFUSION 303, INC.
    Inventors: Edward Browka, James Fentress, Lawrence Farhat, Robert Vasko, Theodore Mosler, David Foshee, George Mansour
  • Patent number: 10265207
    Abstract: A stent delivery system can include a core member, a stent, and a stent engagement member. The engagement member can be positioned along a distal segment of the core member and be coupled to the core member. The engagement member can have an outer surface. The stent can extending along the core member distal segment such that the outer surface of the engagement member engages an inner surface of the stent along at least a portion of only a distal half of the stent for transmitting an axial force from the core member to only the stent distal half of the stent.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: April 23, 2019
    Assignee: COVIDIEN LP
    Inventors: Hieu Luong, Garrett Johnson, Aaron Barrett, Gabriel Newell, Andy Huynh, Lawrence Farhat
  • Publication number: 20180318118
    Abstract: A stent delivery system can include a core member, an introducer sheath, and a microcatheter. The core member can have a distal segment. The stent engagement member can have a generally tubular body positioned about the core member distal segment and can be rotatably coupled to the core member. The engagement member can include an inner layer that has a first durometer and an outer layer that has a second durometer less than the first durometer. The stent can extend along the core member distal segment such that an inner surface of the stent is engaged by the engagement member outer layer for facilitating rotation of the stent relative to the core member.
    Type: Application
    Filed: July 11, 2018
    Publication date: November 8, 2018
    Inventors: Ashok Nageswaran, Michael Losordo, Gabriel Newell, Lawrence Farhat
  • Patent number: 10045867
    Abstract: A stent delivery system can include a core member, a stent engagement member, and a stent. The core member can have a distal segment. The stent engagement member can have a generally tubular body positioned about the core member distal segment and can be rotatably coupled to the core member. The engagement member can include an inner layer that has a first durometer and an outer layer that has a second durometer less than the first durometer. The stent can extend along the core member distal segment such that an inner surface of the stent is engaged by the engagement member outer layer for facilitating rotation of the stent relative to the core member.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: August 14, 2018
    Assignee: COVIDIEN LP
    Inventors: Ashok Nageswaran, Michael Losordo, Gabriel Newell, Lawrence Farhat
  • Patent number: 9901472
    Abstract: A stent delivery system can include a core wire and a self-expanding member disposed along the core wire. The self-expanding member can be used to facilitate expansion of a stent or other implantable device within the vasculature of a patient. The self-expanding member can include first and second end portions that are each axially slidable along the core wire and be able to expand from a collapsed configuration to an expanded configuration upon axial convergence of the first and second end portions.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: February 27, 2018
    Inventors: Gabriel Newell, Andy Huynh, Lawrence Farhat
  • Publication number: 20170325980
    Abstract: A stent delivery system can include a core member, first and second restraints, and a stent engagement component. The core member can have a distal segment. The first and second restraints can be coupled to the core member distal segment and axially spaced apart from each other to provide an axial gap. The first and second restraints can each have an outer profile that tapers radially inwardly in directions away from the gap. The stent engagement component can be at least partially disposed in the axial gap between the first and second restraints such that the component is slidably and rotatably coupled to the core member distal segment.
    Type: Application
    Filed: July 18, 2017
    Publication date: November 16, 2017
    Inventors: Kenneth Brown, Ghislain Sema, Michael Losordo, Evan Epstein, Gabriel Newell, Andy Huynh, Lawrence Farhat
  • Publication number: 20170311963
    Abstract: A system can comprise a catheter and a device having an elongate member and an expandable member. The expandable member can be coupled to the elongate member. The elongate member can extend through the catheter. The expandable member can be positioned with a proximal member end proximal to a distal catheter end, a distal member end positioned distal to the distal catheter end, and at least a portion of the expandable member between the distal catheter end and the distal member end in an expanded state in which a maximum transverse dimension of the expandable member is larger than a maximum transverse dimension of the distal member end. The catheter can be advanced in a patient's body with the expandable structure, in the expanded state, at the distal end of the catheter.
    Type: Application
    Filed: July 20, 2017
    Publication date: November 2, 2017
    Inventors: Lawrence Farhat, Andy Huynh
  • Patent number: 9724221
    Abstract: A stent delivery system can include a core member, first and second restraints, and a stent engagement component. The core member can have a distal segment. The first and second restraints can be coupled to the core member distal segment and axially spaced apart from each other to provide an axial gap. The first and second restraints can each have an outer profile that tapers radially inwardly in directions away from the gap. The stent engagement component can be at least partially disposed in the axial gap between the first and second restraints such that the component is slidably and rotatably coupled to the core member distal segment.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: August 8, 2017
    Assignee: Covidien LP
    Inventors: Kenneth Brown, Ghislain Sema, Michael Losordo, Evan Epstein, Gabriel Newell, Andy Huynh, Lawrence Farhat
  • Publication number: 20170209644
    Abstract: Systems and methods of micro-infusion of medical fluids are disclosed. Micro-infusion systems may include a pump, a patient interface, tubing between the pump and the interface, and a micro-infusion device along the tubing. A first portion of the tubing above the micro-infusion device is longer than a second portion of the tubing below the device. The micro-infusion device may include a chamber in-line with the tubing, a first valve between the chamber and the first portion of the tubing, a second valve between the chamber and the second portion of the tubing and a third valve between the chamber and a dump chamber. The second valve may be slidably disposed within the chamber. A medical fluid may be provided into the chamber that slides the second valve displacing another fluid in the chamber through the third valve into the dump chamber.
    Type: Application
    Filed: January 24, 2017
    Publication date: July 27, 2017
    Inventors: Edward BROWKA, James FENTRESS, Lawrence FARHAT, Robert VASKO
  • Publication number: 20170189667
    Abstract: Systems and methods are provided for intermittent microinfusion. A system may include a pump and an IV set that includes a y-port valve disposed below a pump interface portion of the IV tubing. The y-port valve may include an internal valve member that allows fluid to flow from the pump to a patient when no syringe is attached to the y-port. The internal valve member may be moved by the attachment of a syringe containing the medication to be infused to the y-port such that the fluid pathway from the pump to the patient is blocked and fluid from the syringe can be injected into the IV tubing between the y-port valve and the pump. The pump may retrograde pump the medication into the tubing via the y-port valve and then forward pump the medication to the patient when the syringe is removed from the y-port.
    Type: Application
    Filed: December 29, 2016
    Publication date: July 6, 2017
    Inventors: Robert VASKO, Stephen J. BOLLISH, Lawrence FARHAT, Daniel ABAL, Robert Dwaine BUTTERFIELD
  • Patent number: 9675488
    Abstract: A stent delivery system, a core assembly, and methods of operating the same are provided. The delivery system can comprise a catheter and the core assembly. The core assembly can comprise a constraining member, protruding member, a core member, and a stent extending along the core member. The tubular constraining member can be spaced apart from the core member and define a capture area. The protruding member can be disposed along the core member at least partially distal of the capture area. The stent can have a first portion disposed within the capture area and a second portion, distal to the first portion, extending across or over an outer surface of the protruding member so that the protruding member and the constraining member cooperate to inhibit expansion of the first portion of the stent.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: June 13, 2017
    Assignee: Covidien LP
    Inventors: Gabriel Newell, Andy Huynh, Lawrence Farhat
  • Publication number: 20170032152
    Abstract: Inductive identification systems and methods are described. The system may include an inductive detector configured to identify objects having inductive identifiers. An inductive detector may include conductive coils and inductance readout circuitry for measuring an inductance of each coil. An inductive identifier may include a conductive pattern configured to induce a desired inductance in the coils of the inductive detector. An inductive identifier may include a film having openings, each opening configured to be disposed over a corresponding coil to induce differing inductance changes in the corresponding coils. A pattern of inductance values may be determined and used to identify the object. The detector may be implemented in a cassette recess of an infusion pump system. The inductive identifier may be disposed on a pump cassette configured to be received in the cassette recess and identified based on an inductive interaction between the inductive detector coils and the inductive identifier.
    Type: Application
    Filed: July 28, 2015
    Publication date: February 2, 2017
    Inventors: Mooneer Thabet SALEM, Lawrence FARHAT
  • Patent number: 9463105
    Abstract: Stent delivery systems and methods of use are provided. The systems can include a catheter, a core member, and engagement member, and a stent. The catheter can have a inner wall. The core member can extend within the catheter and having a distal segment. The engagement member can be attached to the distal segment. Further, the stent can be positioned within the catheter and extend over the engagement member. The stent can have an axial length that is greater than an axial length of the engagement member. The engagement member can have an expanded state in which the engagement member presses the stent against the catheter inner wall for engaging the stent to move the stent along with the core member relative to the catheter.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 11, 2016
    Assignee: Covidien LP
    Inventors: Lawrence Farhat, Edwin Wang, David Franco
  • Publication number: 20160220403
    Abstract: A stent delivery system, a core assembly, and methods of operating the same are provided. The delivery system can comprise a catheter and the core assembly. The core assembly can comprise a constraining member, protruding member, a core member, and a stent extending along the core member. The tubular constraining member can be spaced apart from the core member and define a capture area. The protruding member can be disposed along the core member at least partially distal of the capture area. The stent can have a first portion disposed within the capture area and a second portion, distal to the first portion, extending across or over an outer surface of the protruding member so that the protruding member and the constraining member cooperate to inhibit expansion of the first portion of the stent.
    Type: Application
    Filed: April 11, 2016
    Publication date: August 4, 2016
    Inventors: Gabriel NEWELL, Andy HUYNH, Lawrence FARHAT
  • Publication number: 20160193061
    Abstract: A stent delivery system can include a core wire and a self-expanding member disposed along the core wire. The self-expanding member can be used to facilitate expansion of a stent or other implantable device within the vasculature of a patient. The self-expanding member can include first and second end portions that are each axially slidable along the core wire and be able to expand from a collapsed configuration to an expanded configuration upon axial convergence of the first and second end portions.
    Type: Application
    Filed: March 17, 2016
    Publication date: July 7, 2016
    Inventors: Gabriel NEWELL, Andy HUYNH, Lawrence FARHAT