Patents by Inventor Ryan J. Caldwell

Ryan J. Caldwell 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: 11918493
    Abstract: Prosthetic liner apparatus for improving suspension and rotation control between a residual limb and a socket of a prosthesis include a liner body having a shape configured to receive the residual limb and having an outer surface that fits within the socket. The liner body may have a plurality of raised elastomeric grips located on its outer surface and a proximal end of the outer surface of the liner body includes at least an exposed smooth elastomeric region that fits within and seals with the socket. Further disclosed is a prosthetic sock having raised elastomeric grips on its inner and outer surfaces which is for use with a liner body that is smooth or textured and that may or may not include raised elastomeric grips, and that when used together with the liner body ay form a liner apparatus.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: March 5, 2024
    Assignee: Northwestern University
    Inventors: Ryan J. Caldwell, Stefania Fatone
  • Patent number: 11877938
    Abstract: Pump systems for use in suspension of a prosthetic device from a residual limb and methods of suspending a prosthetic device from a residual limb are disclosed. The pump systems include a mechanically activated pump having a first compression member coupled to a second compression member, a diaphragm disposed between the first and second compression members, and coupling elements that engage and couple together the first and second compression members. The mechanically activated pump may be connected with an electrically activated pump, forming a hybrid pump system to provide vacuum engagement between a prosthetic device and a residual limb.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: January 23, 2024
    Assignees: United States Government As Represented By The Department Of Veterans Affairs, Northwestern University
    Inventors: Ryan J. Caldwell, Matthew J. Major
  • Publication number: 20210393420
    Abstract: Prosthetic liner apparatus for improving suspension and rotation control between a residual limb and a socket of a prosthesis include a liner body having a shape configured to receive the residual limb and having an outer surface that fits within the socket. The liner body may have a plurality of raised elastomeric grips located on its outer surface and a proximal end of the outer surface of the liner body includes at least an exposed smooth elastomeric region that fits within and seals with the socket. Further disclosed is a prosthetic sock having raised elastomeric grips on its inner and outer surfaces which is for use with a liner body that is smooth or textured and that may or may not include raised elastomeric grips, and that when used together with the liner body ay form a liner apparatus.
    Type: Application
    Filed: November 8, 2019
    Publication date: December 23, 2021
    Inventors: Ryan J. CALDWELL, Stefania FANTONE
  • Publication number: 20210220154
    Abstract: Pump systems for use in suspension of a prosthetic device from a residual limb and methods of suspending a prosthetic device from a residual limb are disclosed. The pump systems include a mechanically activated pump having a first compression member coupled to a second compression member, a diaphragm disposed between the first and second compression members, and coupling elements that engage and couple together the first and second compression members. The mechanically activated pump may be connected with an electrically activated pump, forming a hybrid pump system to provide vacuum engagement between a prosthetic device and a residual limb.
    Type: Application
    Filed: October 7, 2020
    Publication date: July 22, 2021
    Inventors: Ryan J. Caldwell, Matthew J. Major
  • Patent number: 10806604
    Abstract: Pump systems for use in suspension of a prosthetic device from a residual limb and methods of suspending a prosthetic device from a residual limb are disclosed. The pump systems include a mechanically activated pump having a first compression member coupled to a second compression member, a diaphragm disposed between the first and second compression members, and coupling elements that engage and couple together the first and second compression members. The mechanically activated pump may be connected with an electrically activated pump, forming a hybrid pump system to provide vacuum engagement between a prosthetic device and a residual limb.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: October 20, 2020
    Assignee: Northwestern University
    Inventors: Ryan J. Caldwell, Matthew J. Major
  • Publication number: 20180271679
    Abstract: Pump systems for use in suspension of a prosthetic device from a residual limb and methods of suspending a prosthetic device from a residual limb are disclosed. The pump systems include a mechanically activated pump having a first compression member coupled to a second compression member, a diaphragm disposed between the first and second compression members, and coupling elements that engage and couple together the first and second compression members. The mechanically activated pump may be connected with an electrically activated pump, forming a hybrid pump system to provide vacuum engagement between a prosthetic device and a residual limb.
    Type: Application
    Filed: August 19, 2016
    Publication date: September 27, 2018
    Inventors: Ryan J. Caldwell, Matthew J. Major
  • Patent number: 9757255
    Abstract: Pump systems for use in suspension of a prosthetic device from a residual limb and methods of suspending a prosthetic device from a residual limb are disclosed. The pump systems include a mechanically activated pump having a first compression member coupled to a second compression member, a compressible bladder disposed between the first and second compression members, and coupling elements that engage and couple together the first and second compression members. The mechanically activated pump may be connected with an electrically activated pump within a fluid circuit of a hybrid pump system to provide vacuum engagement between a prosthetic device and a residual limb.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: September 12, 2017
    Assignee: Northwestern University
    Inventors: Ryan J. Caldwell, Andrew H. Hansen, Sean M. Wood, Wei Chen, Regan A. Radcliffe, Kevin A. Yngve, Bennett E. Kuhar, Andrew J. Nelson, Eric Nickel
  • Publication number: 20150265436
    Abstract: Pump systems for use in suspension of a prosthetic device from a residual limb and methods of suspending a prosthetic device from a residual limb are disclosed. The pump systems include a mechanically activated pump having a first compression member coupled to a second compression member, a compressible bladder disposed between the first and second compression members, and coupling elements that engage and couple together the first and second compression members. The mechanically activated pump may be connected with an electrically activated pump within a fluid circuit of a hybrid pump system to provide vacuum engagement between a prosthetic device and a residual limb.
    Type: Application
    Filed: June 4, 2015
    Publication date: September 24, 2015
    Applicant: Northwestern University
    Inventors: Ryan J. Caldwell, Andrew H. Hansen, Sean M. Wood, Wei Chen, Regan A. Radcliffe, Kevin A. Yngve, Bennett E. Kuhar, Andrew J. Nelson, Eric Nickel
  • Publication number: 20150265435
    Abstract: Pump systems for use in suspension of a prosthetic device from a residual limb and methods of suspending a prosthetic device from a residual limb are disclosed. The pump systems include a mechanically activated pump having a first compression member coupled to a second compression member, a compressible bladder disposed between the first and second compression members, and coupling elements that engage and couple together the first and second compression members. The mechanically activated pump may be connected with an electrically activated pump within a fluid circuit of a hybrid pump system to provide vacuum engagement between a prosthetic device and a residual limb.
    Type: Application
    Filed: June 4, 2015
    Publication date: September 24, 2015
    Applicant: NORTHWESTERN UNIVERSITY
    Inventors: Ryan J. Caldwell, Andrew H. Hansen, Sean M. Wood, Wei Chen, Regan A. Radcliffe, Kevin A. Yngve, Bennett E. Kuhar, Andrew J. Nelson, Eric Nickel
  • Patent number: 9066822
    Abstract: Pump systems for use in suspension of a prosthetic device from a residual limb and methods of suspending a prosthetic device from a residual limb are disclosed. The pump systems include a mechanically activated pump having a first compression member coupled to a second compression member, a compressible bladder disposed between the first and second compression members, and coupling elements that engage and couple together the first and second compression members. The mechanically activated pump may be connected with an electrically activated pump within a fluid circuit of a hybrid pump system to provide vacuum engagement between a prosthetic device and a residual limb.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: June 30, 2015
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Ryan J. Caldwell, Andrew H. Hansen, Sean M. Wood, Wei Chen, Regan A. Radcliffe, Kevin A. Yngve, Bennett E. Kuhar, Andrew J. Nelson, Eric Nickel
  • Publication number: 20130096694
    Abstract: Pump systems for use in suspension of a prosthetic device from a residual limb and methods of suspending a prosthetic device from a residual limb are disclosed. The pump systems include a mechanically activated pump having a first compression member coupled to a second compression member, a compressible bladder disposed between the first and second compression members, and coupling elements that engage and couple together the first and second compression members. The mechanically activated pump may be connected with an electrically activated pump within a fluid circuit of a hybrid pump system to provide vacuum engagement between a prosthetic device and a residual limb.
    Type: Application
    Filed: June 21, 2012
    Publication date: April 18, 2013
    Applicant: NORTHWESTERN UNIVERSITY
    Inventors: Ryan J. Caldwell, Andrew H. Hansen, Sean M. Wood, Wei Chen, Regan A. Radcliffe, Kevin A. Yngve, Bennett E. Kuhar, Andrew J. Nelson, Eric Nickel