Patents by Inventor Charles F. White

Charles F. White 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).

  • Publication number: 20210228351
    Abstract: A leaflet for a prosthetic valve formed of at least one layer that includes a composite material containing at least one expanded fluoropolymer membrane having serpentine fibrils and an elastomer is provided. The fluoropolymer may be polytetrafluoroethylene. In at least one embodiment, the elastic properties are present in an axial direction the leaflet. The leaflets may be single layered or multi-layered. The leaflets may be coupled to a support structure and movable between open and closed configurations relative to the support structure to form a heart valve. The elasticity within the leaflets permits, among other things, the leaflets to bend with a reduced occurrence of wrinkles as the valve opens and closes. The elastic properties of the leaflet also, among other things, improve bending properties and reduce closure stresses, thereby extending the life of the leaflet.
    Type: Application
    Filed: April 14, 2021
    Publication date: July 29, 2021
    Inventors: William C. Bruchman, Charles F. White
  • Patent number: 10993803
    Abstract: A leaflet for a prosthetic valve formed of at least one layer that includes a composite material containing at least one expanded fluoropolymer membrane having serpentine fibrils and an elastomer is provided. The fluoropolymer may be polytetrafluoroethylene. In at least one embodiment, the elastic properties are present in an axial direction the leaflet. The leaflets may be single layered or multi-layered. The leaflets may be coupled to a support structure and movable between open and closed configurations relative to the support structure to form a heart valve. The elasticity within the leaflets permits, among other things, the leaflets to bend with a reduced occurrence of wrinkles as the valve opens and closes. The elastic properties of the leaflet also, among other things, improve bending properties and reduce closure stresses, thereby extending the life of the leaflet.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: May 4, 2021
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: William C. Bruchman, Charles F. White
  • Patent number: 10470878
    Abstract: Thin, biocompatible, high-strength, composite materials are disclosed that are suitable for use in a valve for regulating blood flow direction. In one aspect, the composite material maintains flexibility in high-cycle flexural applications, making it particularly applicable to high-flex implants such as a prosthetic heart valve leaflet. The composite material includes a porous polymer membrane and an elastomer, wherein the elastomer fills substantially all of the pores of the porous polymer membrane.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: November 12, 2019
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: William C. Bruchman, Paul D. Gassler, Cody L. Hartman, Peter J. Walsh, Charles F. White
  • Publication number: 20170319338
    Abstract: A leaflet for a prosthetic valve formed of at least one layer that includes a composite material containing at least one expanded fluoropolymer membrane having serpentine fibrils and an elastomer is provided. The fluoropolymer may be polytetrafluoroethylene. In at least one embodiment, the elastic properties are present in an axial direction the leaflet. The leaflets may be single layered or multi-layered. The leaflets may be coupled to a support structure and movable between open and closed configurations relative to the support structure to form a heart valve. The elasticity within the leaflets permits, among other things, the leaflets to bend with a reduced occurrence of wrinkles as the valve opens and closes. The elastic properties of the leaflet also, among other things, improve bending properties and reduce closure stresses, thereby extending the life of the leaflet.
    Type: Application
    Filed: July 27, 2017
    Publication date: November 9, 2017
    Inventors: William C. Bruchman, Charles F. White
  • Patent number: 9744033
    Abstract: A leaflet for a prosthetic valve formed of at least one layer that includes a composite material containing at least one expanded fluoropolymer membrane having serpentine fibrils and an elastomer is provided. The fluoropolymer may be polytetrafluoroethylene. In at least one embodiment, the elastic properties are present in an axial direction the leaflet. The leaflets may be single layered or multi-layered. The leaflets may be coupled to a support structure and movable between open and closed configurations relative to the support structure to form a heart valve. The elasticity within the leaflets permits, among other things, the leaflets to bend with a reduced occurrence of wrinkles as the valve opens and closes. The elastic properties of the leaflet also, among other things, improve bending properties and reduce closure stresses, thereby extending the life of the leaflet.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: August 29, 2017
    Assignee: W.L. GORE & ASSOCIATES, Inc.
    Inventors: William C. Bruchman, Charles F. White
  • Publication number: 20170239042
    Abstract: Thin, biocompatible, high-strength, composite materials are disclosed that are suitable for use in a valve for regulating blood flow direction. In one aspect, the composite material maintains flexibility in high-cycle flexural applications, making it particularly applicable to high-flex implants such as a prosthetic heart valve leaflet. The composite material includes a porous polymer membrane and an elastomer, wherein the elastomer fills substantially all of the pores of the porous polymer membrane.
    Type: Application
    Filed: January 30, 2017
    Publication date: August 24, 2017
    Inventors: William C. Bruchman, Paul D. Gassler, Cody L. Hartman, Peter J. Walsh, Charles F. White
  • Patent number: 9554900
    Abstract: Thin, biocompatible, high-strength, composite materials are disclosed that are suitable for use in a valve for regulating blood flow direction. In one aspect, the composite material maintains flexibility in high-cycle flexural applications, making it particularly applicable to high-flex implants such as a prosthetic heart valve leaflet. The composite material includes a porous polymer membrane and an elastomer, wherein the elastomer fills substantially all of the pores of the porous polymer membrane.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: January 31, 2017
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: William C. Bruchman, Paul D. Gassler, Cody L. Hartman, Peter J. Walsh, Charles F. White
  • Patent number: 9005269
    Abstract: Bioabsorbable self-expanding medical devices formed of an integral framework with a multiplicity of fenestrations are provided. The framework is continuous, non-filamentous, non-braided, and non-interlaced. The devices includes a non-blended hydrolysable co-polymeric material comprising an amorphous component with a glass transition temperature that is below ambient body temperature and a crystallizable component that possesses a crystalline melting point in excess of ambient body temperature. The devices radially expand from a compressed first diameter to an uncompressed second diameter equal to or greater than 1.5 times the first diameter within two minutes in an aqueous medium at 37° C. following release of a compressive force placed on the devices. Additionally, the medical device does not change axial length significantly as the radial dimensions of the devices are changed.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: April 14, 2015
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Joseph R. Armstrong, Paul C. Begovac, Robert L. Cleek, Edward H. Cully, Charles Flynn, Byron K. Hayes, Ryan V. Peterson, Michael J. Vonesh, Charles F. White
  • Patent number: 8961599
    Abstract: A thin, biocompatible, high-strength, composite material is disclosed that is suitable for use in various implanted configurations. In one aspect, the composite material maintains flexibility in high-cycle flexural applications, making it particularly applicable to high-flex implants such as heart pacing lead or heart valve leaflet. The composite material includes a porous expanded fluoropolymer membrane and an elastomer, wherein the elastomer fills substantially all of the pores of the porous expanded fluoropolymer, and the composite material comprising less than about 80% fluoropolymer by weight.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: February 24, 2015
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: William C. Bruchman, Paul D. Gassler, Cody L. Hartman, Peter J. Walsh, Charles F. White
  • Publication number: 20140180402
    Abstract: A leaflet for a prosthetic valve formed of at least one layer that includes a composite material containing at least one expanded fluoropolymer membrane having serpentine fibrils and an elastomer is provided. The fluoropolymer may be polytetrafluoroethylene. In at least one embodiment, the elastic properties are present in an axial direction the leaflet. The leaflets may be single layered or multi-layered. The leaflets may be coupled to a support structure and movable between open and closed configurations relative to the support structure to form a heart valve. The elasticity within the leaflets permits, among other things, the leaflets to bend with a reduced occurrence of wrinkles as the valve opens and closes. The elastic properties of the leaflet also, among other things, improve bending properties and reduce closure stresses, thereby extending the life of the leaflet.
    Type: Application
    Filed: February 17, 2014
    Publication date: June 26, 2014
    Applicant: W. L. GORE & ASSOCIATES, INC.
    Inventors: William C. Bruchman, Charles F. White
  • Patent number: 8597745
    Abstract: The present invention is directed to implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: December 3, 2013
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Ted R. Farnsworth, Charles Flynn, Charles F. White
  • Patent number: 8562633
    Abstract: The present invention is a composite medical device having a non-bioabsorbable implantable tissue repair or reconstruction component and a resilient bioabsorbable support member component that aids in deployment and placement of the implantable component at a surgical site. Following deployment, the support member component is readily bioabsorbed and removed from the implantable component. The invention is particularly useful in laproscopic, endoluminal, and other surgical procedures.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: October 22, 2013
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Edward H. Cully, James T. Walter, Charles F. White
  • Publication number: 20130183515
    Abstract: Articles including expanded fluoropolymer membranes having serpentine fibrils are provided. The fluoropolymer membranes exhibit high elongation while substantially retaining the strength properties of the fluoropolymer membrane. The membrane may include a fluoropolymer and/or elastomer. Additionally, the article has an elongation in at least one direction of at least about 100% and a matrix tensile strength of at least about 50 MPa. The article may be formed by (1) expanding a dried, extruded fluoropolymer tape in at least one direction to produce an expanded fluoropolymer membrane and (2) retracting the expanded fluoropolymer membrane in at least one direction of expansion by applying heat or by adding a solvent. The application of a tensile force at least partially straightens the serpentine fibrils, thereby elongating the article. The expanded fluoropolymer membrane may include a microstructure of substantially only fibrils. The membranes may be imbibed with an elastomeric material to form a composite.
    Type: Application
    Filed: January 16, 2012
    Publication date: July 18, 2013
    Inventor: Charles F. White
  • Patent number: 8377241
    Abstract: The present invention is directed to a method of making implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: February 19, 2013
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Ted R. Farnsworth, Charles Flynn, Charles F. White
  • Publication number: 20120253453
    Abstract: A thin, biocompatible, high-strength, composite material is disclosed that is suitable for use in various implanted configurations. In one aspect, the composite material maintains flexibility in high-cycle flexural applications, making it particularly applicable to high-flex implants such as heart pacing lead or heart valve leaflet. The composite material includes a porous expanded fluoropolymer membrane and an elastomer, wherein the elastomer fills substantially all of the pores of the porous expanded fluoropolymer, and the composite material comprising less than about 80% fluoropolymer by weight.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 4, 2012
    Applicant: GORE ENTERPRISE HOLDINGS, INC.
    Inventors: William C. Bruchman, Paul D. Gassler, Cody L. Hartman, Peter J. Walsh, Charles F. White
  • Patent number: 8067071
    Abstract: The present invention is directed to implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: November 29, 2011
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Ted R. Farnsworth, Charles Flynn, Charles F. White
  • Patent number: 8048503
    Abstract: The present invention is directed to implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: November 1, 2011
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Ted R. Farnsworth, Charles Flynn, Charles F. White
  • Patent number: 8048500
    Abstract: The present invention is directed to implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: November 1, 2011
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Paul D. Drumheller, Ted R. Farnsworth, Charles Flynn, Byron K. Hayes, Charles F. White
  • Publication number: 20110089592
    Abstract: The present invention is directed to a method of making implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
    Type: Application
    Filed: November 4, 2010
    Publication date: April 21, 2011
    Inventors: Ted R. Farnsworth, Charles Flynn, Charles F. White
  • Patent number: 7850810
    Abstract: The present invention is directed to a method of making implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: December 14, 2010
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Ted R. Farnsworth, Charles Flynn, Charles F. White