Patents by Inventor Eric D. Mathews

Eric D. Mathews 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: 12274462
    Abstract: Snare device with anti-skewing. In one embodiment, the snare device includes a core-wire. The core-wire is made of a superelastic material and includes a proximal portion of greater cross-sectional area and a distal portion of lesser cross-sectional area. The distal portion includes a looped shape in a relaxed state. A flexible coil is mounted around the core-wire and is straight in a compressed state. The distal ends of the core-wire and the coil are coupled together. The proximal end of the core-wire is coupled to a handle of an actuator, and the proximal end of the coil is coupled to a slide of an actuator, the slide being slidably mounted on the handle. The tensile strength of the coil multiplied by the cross-sectional area of the coil is greater than the upper plateau stress of the core-wire distal portion multiplied by the cross-sectional area of the core-wire distal portion.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: April 15, 2025
    Assignee: CARNELIAN MEDICAL LLC
    Inventor: Eric D. Mathews
  • Publication number: 20240407797
    Abstract: A snare device for retrieving and/or manipulating an object within a space, such as a body lumen. In one embodiment, the snare device includes a support and a core wire. The support includes a proximal portion terminating in a proximal end, a distal portion terminating in a distal end, and a lumen, the lumen extending distally from the proximal end. The core wire is flexible and includes a proximal portion and a distal portion. The distal portions of the core wire and support are filamentary structures forming helices fitted together tightly or loosely, wherein the core wire forms a loop extending away from the distal end of the support, and wherein the core wire passes through the lumen and emerges from the proximal end of the support. The support helix is made of a round wire, and the core wire helix is made of a flattened wire.
    Type: Application
    Filed: June 6, 2024
    Publication date: December 12, 2024
    Inventors: Eric D. Mathews, Mark W.I. Webster
  • Patent number: 12029403
    Abstract: A snare device for retrieving and/or manipulating an object within a space, such as a body lumen. In one embodiment, the snare device includes a support and a core wire. The support includes a proximal portion terminating in a proximal end, a distal portion terminating in a distal end, and a lumen, the lumen extending distally from the proximal end. The core wire is flexible and includes a proximal portion and a distal portion. The distal portion of the core wire and the distal portion of the support are complementarily shaped and are fixedly fitted together, wherein the core wire forms a loop extending away from the distal end of the support, and wherein the core wire passes through the lumen and emerges from the proximal end of the support. The distal portion of the support and the distal portion of the core wire may be complementarily dimensioned helical structures.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: July 9, 2024
    Assignee: CARNELIAN MEDICAL LLC
    Inventors: Eric D. Mathews, Mark W. I. Webster
  • Publication number: 20220280145
    Abstract: A snare device for retrieving and/or manipulating an object within a space, such as a body lumen. In one embodiment, the snare device includes a support and a core wire. The support includes a proximal portion terminating in a proximal end, a distal portion terminating in a distal end, and a lumen, the lumen extending distally from the proximal end. The core wire is flexible and includes a proximal portion and a distal portion. The distal portion of the core wire and the distal portion of the support are complementarily shaped and are fixedly fitted together, wherein the core wire forms a loop extending away from the distal end of the support, and wherein the core wire passes through the lumen and emerges from the proximal end of the support. The distal portion of the support and the distal portion of the core wire may be complementarily dimensioned helical structures.
    Type: Application
    Filed: March 4, 2022
    Publication date: September 8, 2022
    Inventors: Eric D. Mathews, Mark W.I. Webster
  • Patent number: 11400261
    Abstract: A preformed guidewire particularly well-suited for use in percutaneous medical procedures, such as transcatheter aortic valve replacement, includes an inner corewire of discontinuous, tapered stiffness that is surrounded along a portion of its length by a flexible, outer casing of uniform cross-section, such as a tightly wound, stainless steel, spring coil wire. The inner corewire is constructed of a shape-memory material, such as a nickel-titanium alloy, that is preformed into an encircled S-shaped configuration in its atraumatic distal region. Specifically, the distal region includes an enlarged, stiffened, proximate segment that encircles a smaller, more flexible, distal segment. As a feature of the invention, the distal and proximal segments project along fixed-radial arcuate paths that extend in opposite directions from one another. As a result, the distal region is optimally configured to limit the risk of trauma to the immediate site of treatment when inserted through a straightened guide catheter.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: August 2, 2022
    Assignee: CONCERT MEDICAL, LLC
    Inventors: Eric D. Mathews, John R. Panicci, Mark W. I. Webster
  • Publication number: 20220218371
    Abstract: Snare device with anti-skewing. In one embodiment, the snare device includes a core-wire. The core-wire is made of a superelastic material and includes a proximal portion of greater cross-sectional area and a distal portion of lesser cross-sectional area. The distal portion includes a looped shape in a relaxed state. A flexible coil is mounted around the core-wire and is straight in a compressed state. The distal ends of the core-wire and the coil are coupled together. The proximal end of the core-wire is coupled to a handle of an actuator, and the proximal end of the coil is coupled to a slide of an actuator, the slide being slidably mounted on the handle. The tensile strength of the coil multiplied by the cross-sectional area of the coil is greater than the upper plateau stress of the core-wire distal portion multiplied by the cross-sectional area of the core-wire distal portion.
    Type: Application
    Filed: July 31, 2020
    Publication date: July 14, 2022
    Inventor: Eric D. Mathews
  • Patent number: 11350956
    Abstract: Snare device with anti-skewing. In one embodiment, the snare device includes a core-wire. The core-wire is made of a superelastic material and includes a proximal portion of greater cross-sectional area and a distal portion of lesser cross-sectional area. The distal portion includes a looped shape in a relaxed state. A flexible coil is mounted around the core-wire and is straight in a compressed state. The distal ends of the core-wire and the coil are coupled together. The proximal end of the core-wire is coupled to a handle of an actuator, and the proximal end of the coil is coupled to a slide of an actuator, the slide being slidably mounted on the handle. The tensile strength of the coil multiplied by the cross-sectional area of the coil is greater than the upper plateau stress of the core-wire distal portion multiplied by the cross-sectional area of the core-wire distal portion.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: June 7, 2022
    Assignee: CARNELIAN MEDICAL LLC
    Inventor: Eric D. Mathews
  • Publication number: 20210030431
    Abstract: Snare device with anti-skewing. In one embodiment, the snare device includes a core-wire. The core-wire is made of a superelastic material and includes a proximal portion of greater cross-sectional area and a distal portion of lesser cross-sectional area. The distal portion includes a looped shape in a relaxed state. A flexible coil is mounted around the core-wire and is straight in a compressed state. The distal ends of the core-wire and the coil are coupled together. The proximal end of the core-wire is coupled to a handle of an actuator, and the proximal end of the coil is coupled to a slide of an actuator, the slide being slidably mounted on the handle. The tensile strength of the coil multiplied by the cross-sectional area of the coil is greater than the upper plateau stress of the core-wire distal portion multiplied by the cross-sectional area of the core-wire distal portion.
    Type: Application
    Filed: August 1, 2019
    Publication date: February 4, 2021
    Inventor: Eric D. Mathews
  • Publication number: 20150290432
    Abstract: A preformed guidewire particularly well-suited for use in percutaneous medical procedures, such as transcatheter aortic valve replacement, includes an inner corewire of discontinuous, tapered stiffness that is surrounded along a portion of its length by a flexible, outer casing of uniform cross-section, such as a tightly wound, stainless steel, spring coil wire. The inner corewire is constructed of a shape-memory material, such as a nickel-titanium alloy, that is preformed into an encircled S-shaped configuration in its atraumatic distal region. Specifically, the distal region includes an enlarged, stiffened, proximate segment that encircles a smaller, more flexible, distal segment. As a feature of the invention, the distal and proximal segments project along fixed-radial arcuate paths that extend in opposite directions from one another. As a result, the distal region is optimally configured to limit the risk of trauma to the immediate site of treatment when inserted through a straightened guide catheter.
    Type: Application
    Filed: November 21, 2013
    Publication date: October 15, 2015
    Inventors: Eric D. Mathews, John R. Panicci, Mark W.I. Webster
  • Patent number: 7731669
    Abstract: A composite guidewire comprising a proximal wire segment having a proximal end, a distal end and a longitudinal axis extending therebetween, the distal end being formed with a first flat planar bonding face which extends parallel to the longitudinal axis, the proximal wire segment having a first elasticity; a distal wire segment having a proximal end, a distal end and a longitudinal axis extending therebetween, the proximal end being formed with a second flat planar bonding face which extends parallel to the longitudinal axis, the distal wire segment having a second elasticity; wherein the first and second flat planar bonding faces of the proximal wire segment are formed complementary to one another; and further wherein the proximal and distal wire segments are joined together by bonding the first flat planar bonding face to the second flat planar bonding face in an overlapping manner and a method for forming a composite guidewire.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: June 8, 2010
    Assignee: Concert Medical, LLC
    Inventors: Eric D. Mathews, Andrew M. Whitehead, John R. Panicci
  • Publication number: 20090209987
    Abstract: A surgical snare for ensnaring an object in a patient includes a flexible section that selectively switches between an insertion shape and an ensnaring shape; and a capture-area enhancer deployed when the flexible section assumes the ensnaring shape. An actuator coupled to the flexible section causes the flexible section to transition between the insertion shape and the ensnaring shape.
    Type: Application
    Filed: February 1, 2006
    Publication date: August 20, 2009
    Inventors: Eric D. Mathews, Paul J. Dobson, Jeffry Coats
  • Patent number: 6652536
    Abstract: An instrument for removal of an object, e.g., a blood clot lodged in a blood vessel, has a longitudinally extending support that defines an axis. The support has a flexible distal section having a compressed state, in which it defines a first path relative to the axis. A core-wire extending along the axis has a relaxed state in which it defines a second path relative to the axis. An anchor disposed on the flexible distal section and attached to the core-wire causes the flexible distal section to follow the same path. An actuator engaged to a proximal end of the core-wire enables selective application of a tensile force thereto. This tensile force causes the core-wire and the flexible distal section to transition together between the first path and the second path.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: November 25, 2003
    Assignee: Primus Medical, Inc.
    Inventors: Eric D. Mathews, Paul J. Dobson
  • Patent number: 6500185
    Abstract: An instrument for removal of an object, e.g., a blood clot lodged in a blood vessel, has a longitudinally extending support that defines an axis. The support has a flexible distal section and a rigid proximal section. The flexible distal section has a compressed state, in which it defines a first path relative to the axis. A core-wire extending along the axis has a relaxed state in which it defines a second path relative to the axis. An anchor disposed on the flexible distal section and attached to the core-wire causes the flexible distal section to follow the same path. An actuator engaged to a proximal end of the core-wire enables a surgeon to selectively apply a tensile force thereto. This tensile force causes the core-wire and the flexible distal section to transition together between the first path and the second path.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: December 31, 2002
    Assignee: Primus Medical, Inc.
    Inventors: Eric D. Mathews, Paul J. Dobson
  • Publication number: 20020161397
    Abstract: An instrument for removal of an object, e.g., a blood clot lodged in a blood vessel, has a longitudinally extending support that defines an axis. The support has a flexible distal section having a compressed state, in which it defines a first path relative to the axis. A core-wire extending along the axis has a relaxed state in which it defines a second path relative to the axis. An anchor disposed on the flexible distal section and attached to the core-wire causes the flexible distal section to follow the same path. An actuator engaged to a proximal end of the core-wire enables selective application of a tensile force thereto. This tensile force causes the core-wire and the flexible distal section to transition together between the first path and the second path.
    Type: Application
    Filed: June 19, 2002
    Publication date: October 31, 2002
    Inventors: Eric D. Mathews, Paul J. Dobson
  • Patent number: 5782824
    Abstract: A catheter uses a steerable outer catheter with an inner catheter rotatable and extendable with respect to the outer catheter. The outer catheter may be positioned within a patient's heart and a portion of the outer catheter may provide movement like that of a windshield wiper by manipulation of a spring. By combining the windshield wiper type movement with the extension and rotation of the inner catheter relative to the outer catheter, a large area within a patient's heart may be readily mapped for conduction tissue and be subjected to laser ablation if appropriate. Various configurations provide flexibility in relatively positioning of windows used to apply laser energy and ring electrodes used to sense conduction tissue. Various anchoring techniques are described.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 21, 1998
    Assignees: Abela Laser Systems, Inc., University of Florida Research Foundation, Inc.
    Inventors: George S. Abela, Stephan E. Friedl, Eric D. Mathews, Russell W. Bowden
  • Patent number: 5651785
    Abstract: A catheter uses a steerable outer catheter with an inner catheter rotatable and extendable with respect to the outer catheter. The outer catheter may be positioned within a patient's heart and a portion of the outer catheter may provide movement like that of a windshield wiper by manipulation of a spring. By combining the windshield wiper type movement with the extension and rotation of the inner catheter relative to the outer catheter, a large area within a patient's heart may be readily mapped for conduction tissue and be subjected to laser ablation if appropriate. Various configurations provide flexibility in relatively positioning of windows used to apply laser energy and ring electrodes used to sense conduction tissue. Some embodiments provide only laser ablation (no mapping).
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 29, 1997
    Assignees: Abela Laser Systems, Inc., University of Florida Research Foundation, Inc.
    Inventors: George S. Abela, Stephan E. Friedl, Eric D. Mathews
  • Patent number: 5651786
    Abstract: A catheter uses a steerable outer catheter with an inner catheter rotatable and extendable with respect to the outer catheter. The outer catheter may be positioned within a patient's heart and a portion of the outer catheter may provide movement like that of a windshield wiper by manipulation of a spring. By combining the windshield wiper type movement with the extension and rotation of the inner catheter relative to the outer catheter, a large area within a patient's heart may be readily mapped for conduction tissue and be subjected to laser ablation if appropriate. Various configurations provide flexibility in relatively positioning of windows used to apply laser energy and ring electrodes used to sense conduction tissue. Some embodiments provide only mapping (no ablation) or with ablation by other then Various anchoring techniques are described.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 29, 1997
    Assignees: Abela Laser Systems, Inc., University of Florida Research Foundation, Inc.
    Inventors: George S. Abela, Stephan E. Friedl, Eric D. Mathews
  • Patent number: 5575787
    Abstract: A catheter uses a steerable outer catheter with an inner catheter rotatable and extendable with respect to the outer catheter. The outer catheter may be positioned within a patient's heart and a portion of the outer catheter may provide movement like that of a windshield wiper by manipulation of a spring. By combining the windshield wiper type movement with the extension and rotation of the inner catheter relative to the outer catheter, a large area within a patient's heart may be readily mapped for conduction tissue and be subjected to laser ablation if appropriate. Various configurations provide flexibility in relatively positioning of windows used to apply laser energy and ring electrodes used to sense conduction tissue.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: November 19, 1996
    Assignees: Abela Laser Systems, Inc., University of Florida
    Inventors: George S. Abela, Stephan E. Friedl, Eric D. Mathews
  • Patent number: 5464404
    Abstract: A catheter uses a steerable outer catheter with an inner catheter rotatable and extendable with respect to the outer catheter. The outer catheter may be positioned within a patient's heart and a portion of the outer catheter may provide movement like that of a windshield wiper by manipulation of a spring. By combining the windshield wiper type movement with the extension and rotation of the inner catheter relative to the outer catheter, a large area within a patient's heart may be readily mapped for conduction tissue and be subjected to laser ablation if appropriate. Various configurations provide flexibility in relatively positioning of windows used to apply laser energy and ring electrodes used to sense conduction tissue.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: November 7, 1995
    Assignees: Abela Laser Systems, Inc., University of Florida
    Inventors: George S. Abela, Stephan E. Friedl, Eric D. Mathews