Patents by Inventor Andrew H. Hansen
Andrew H. Hansen 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).
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Patent number: 9795522Abstract: A manual wheelchair including a collapsible frame having a first lateral member that is connected to first and second braces at their respective first ends. A drive wheel axel extends along a first axis of rotation and engages a drive wheel, the first brace, and a portion of a transmission. A push rim axel extends along a second axis of rotation and engages a push rim wheel, the second brace, and a portion of the transmission, which transmits rotation of the push rim to rotation of the drive wheel. The collapsible frame additionally includes a second lateral member that is connected to the first and second braces as their respective second ends. The first and second braces are configured to release the second lateral member to collapse the manual wheelchair.Type: GrantFiled: September 19, 2016Date of Patent: October 24, 2017Assignee: THE DEPARTMENT OF VETERANS AFFAIRSInventors: Andrew H. Hansen, Gary D. Goldish, Eric Nickel
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Patent number: 9757255Abstract: 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: GrantFiled: June 4, 2015Date of Patent: September 12, 2017Assignee: Northwestern UniversityInventors: 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
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Publication number: 20170156894Abstract: An ankle-foot prosthesis includes a foot plate, an ankle frame attached to the foot plate, a yoke pivotally connected to the ankle frame and including a member for attaching to a leg, a damper having a first end connected to the yoke and a second end connected to the ankle frame, and a control mechanism for switching the damper between low and high settings.Type: ApplicationFiled: February 16, 2017Publication date: June 8, 2017Applicants: U.S. Department of Veterans Affairs, Regents of the University of MinnesotaInventors: Andrew H. HANSEN, Eric A. NICKEL
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Publication number: 20170071761Abstract: An ankle-foot prosthesis includes a foot plate, an ankle frame attached to the foot plate, a yoke pivotally connected to the ankle frame and including a member for attaching to a leg, a damper having a first end connected to the yoke and a second end connected to the ankle frame, and a control mechanism for switching the damper between low and high settings.Type: ApplicationFiled: November 22, 2016Publication date: March 16, 2017Applicants: U.S. Department of Veterans Affairs, Regents of the University of MinnesotaInventors: Andrew H. HANSEN, Eric A. NICKEL
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Patent number: 9549827Abstract: An ankle-foot prosthesis includes a foot plate, an ankle frame attached to the foot plate, a yoke pivotally connected to the ankle frame and including a member for attaching to a leg, a damper having a first end connected to the yoke and a second end connected to the ankle frame, and a control mechanism for switching the damper between low and high settings.Type: GrantFiled: September 10, 2013Date of Patent: January 24, 2017Assignees: U.S. DEPARTMENT OF VETERANS AFFAIRS, REGENTS OF THE UNIVERISTY OF MINNESOTAInventors: Andrew H. Hansen, Eric A. Nickel
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Publication number: 20170007477Abstract: A manual wheelchair including a collapsible frame having a first lateral member that is connected to first and second braces at their respective first ends. A drive wheel axel extends along a first axis of rotation and engages a drive wheel, the first brace, and a portion of a transmission. A push rim axel extends along a second axis of rotation and engages a push rim wheel, the second brace, and a portion of the transmission, which transmits rotation of the push rim to rotation of the drive wheel. The collapsible frame additionally includes a second lateral member that is connected to the first and second braces as their respective second ends. The first and second braces are configured to release the second lateral member to collapse the manual wheelchair.Type: ApplicationFiled: September 19, 2016Publication date: January 12, 2017Inventors: Andrew H. HANSEN, Gary D. GOLDISH, Eric NICKEL
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Publication number: 20170007476Abstract: A manual wheelchair including a collapsible frame having a first lateral member that is connected to first and second braces at their respective first ends. A drive wheel axel extends along a first axis of rotation and engages a drive wheel, the first brace, and a portion of a transmission. A push rim axel extends along a second axis of rotation and engages a push rim wheel, the second brace, and a portion of the transmission, which transmits rotation of the push rim to rotation of the drive wheel. The collapsible frame additionally includes a second lateral member that is connected to the first and second braces as their respective second ends. The first and second braces are configured to release the second lateral member to collapse the manual wheelchair.Type: ApplicationFiled: September 19, 2016Publication date: January 12, 2017Inventors: Andrew H. HANSEN, Gary D. GOLDISH
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Patent number: 9445958Abstract: A manual wheelchair including a frame, a drive wheel connected to the frame, having a first axis of rotation and configured to rotate relative to the frame, a push rim connected to the frame, having a second axis of rotation extending substantially parallel to the first axis of rotation of the drive wheel and configured to rotate relative to the frame, wherein the second axis of rotation of the push rim is offset from the first axis of rotation of the drive wheel in a direction orthogonal to the first axis of rotation of the drive wheel, and a transmission configured to transmit rotation of the push rim to rotation of the drive wheel. Additionally, the wheelchair may also include multispeed fixed-gear hubs for propulsion on different terrain and removable or rotatable push rims for easier transfers.Type: GrantFiled: March 7, 2014Date of Patent: September 20, 2016Assignee: DEPARTMENT OF VETERANS AFFAIRS, TECHNOLOGY TRANSFER PROGRAMInventors: Andrew H. Hansen, Gary D. Goldish
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Publication number: 20160038355Abstract: A manual wheelchair including a frame, a drive wheel connected to the frame, having a first axis of rotation and configured to rotate relative to the frame, a push rim connected to the frame, having a second axis of rotation extending substantially parallel to the first axis of rotation of the drive wheel and configured to rotate relative to the frame, wherein the second axis of rotation of the push rim is offset from the first axis of rotation of the drive wheel in a direction orthogonal to the first axis of rotation of the drive wheel, and a transmission configured to transmit rotation of the push rim to rotation of the drive wheel. Additionally, the wheelchair may also include multispeed fixed-gear hubs for propulsion on different terrain and removable or rotatable push rims for easier transfers.Type: ApplicationFiled: March 7, 2014Publication date: February 11, 2016Inventors: Andrew H. HANSEN, Gary D. GOLDISH
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Patent number: 9204979Abstract: The present invention relates in the field of orthopedics to an artificial ankle which imitates the natural human gait in a proper way, thereby enabling its user to walk not only in a plane environment but also uphill and downhill without any unpleasant effects. The present invention further relates to an artificial foot and an artificial leg containing said artificial ankle.Type: GrantFiled: January 11, 2011Date of Patent: December 8, 2015Assignees: FALZ & KANNENBERG GMBH & CO. KG, NORTHWESTERN UNIVERSITYInventors: Felix Starker, Urs Schneider, Andrew H. Hansen, Dudley S. Childress, Joachim Pauli, Carsten Pauli, Nancy Childress
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Publication number: 20150265436Abstract: 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: ApplicationFiled: June 4, 2015Publication date: September 24, 2015Applicant: Northwestern UniversityInventors: 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
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Publication number: 20150265435Abstract: 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: ApplicationFiled: June 4, 2015Publication date: September 24, 2015Applicant: NORTHWESTERN UNIVERSITYInventors: 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
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Patent number: 9066822Abstract: 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: GrantFiled: June 21, 2012Date of Patent: June 30, 2015Assignee: NORTHWESTERN UNIVERSITYInventors: 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
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Patent number: 8905421Abstract: A manual wheelchair including a frame, a drive wheel connected to the frame, having a first axis of rotation and configured to rotate relative to the frame, a push rim connected to the frame, having a second axis of rotation extending substantially parallel to the first axis of rotation of the drive wheel and configured to rotate relative to the frame, wherein the second axis of rotation of the push rim is offset from the first axis of rotation of the drive wheel in a direction orthogonal to the first axis of rotation of the drive wheel, and a transmission configured to transmit rotation of the push rim to rotation of the drive wheel. Additionally, the wheelchair may also include multispeed fixed-gear hubs for propulsion on different terrain and removable or rotatable push rims for easier transfers.Type: GrantFiled: March 14, 2013Date of Patent: December 9, 2014Assignee: Department of Veterans Affairs, Technology Transfer ProgramInventors: Andrew H. Hansen, Gary D. Goldish
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Patent number: 8764850Abstract: A bi-modal ankle-foot device that provides a curved effective shape appropriate for walking and a flattened effective shape for standing. The bi-modal ankle-foot device includes a foot piece and a lockable ankle joint connected to the flat foot piece, the ankle joint and foot piece cooperating to provide a curved shape for walking when the ankle joint is unlocked and to provide a flattened shape for standing when the ankle joint is locked.Type: GrantFiled: July 28, 2009Date of Patent: July 1, 2014Assignee: Northwestern UniversityInventors: Andrew H. Hansen, Dudley S. Childress
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Patent number: 8696764Abstract: The present invention relates to an improved system for use in rehabilitation and/or physical therapy for the treatment of injury or disease to the lower limbs or extremities. The system can enable an amputee to proceed over any inclined or declined surface without overbalancing. The system is mechanically passive in that it does not utilize motors, force generating devices, batteries, or powered sources that may add undesirable weight or mass and that may require recharging. In particular the system is self-adapting to adjust the torque moment depending upon the motion, the extent of inclination, and the surface topography. An additional advantage of the improvement is that the system can be light and may also be simple to manufacture.Type: GrantFiled: January 20, 2012Date of Patent: April 15, 2014Assignee: Northwestern UniversityInventors: Andrew H. Hansen, Eric A. Nickel
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Publication number: 20140087920Abstract: A foldable parallel bar apparatus includes generally U-shaped first and second end frames and a set of handrails connected to and extending between the first and second end frames, wherein the handrails are foldable so as to move the first and second end frames closer to one another thereby compacting the apparatus. When multiple modules of the end frames are connected, they provide an uninterrupted path between the handrails. An alternative embodiment provides base platforms that are foldable relative to each other and handrails that are vertically and horizontally adjustable.Type: ApplicationFiled: September 10, 2013Publication date: March 27, 2014Applicant: U.S. Department of Veterans AffairsInventors: Eric A. NICKEL, Andrew H. HANSEN, Adam Stephen BREYETTE, Binghan CHEN, Kristin HUBER, Ross KLABON, Thomas C. LaSEE, William Gunther VOSS, Steven M. MORIN
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Publication number: 20140088730Abstract: An ankle-foot prosthesis includes a foot plate, an ankle frame attached to the foot plate, a yoke pivotally connected to the ankle frame and including a member for attaching to a leg, a damper having a first end connected to the yoke and a second end connected to the ankle frame, and a control mechanism for switching the damper between low and high settings.Type: ApplicationFiled: September 10, 2013Publication date: March 27, 2014Applicant: U.S. Department of Veterans AffairsInventors: Andrew H. Hansen, Eric A. Nickel
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Publication number: 20140074255Abstract: The present invention relates in the field of orthopedics to an artificial ankle which imitates the natural human gait in a proper way, thereby enabling its user to walk not only in a plane environment but also uphill and downhill without any unpleasant effects. The present invention further relates to an artificial foot and an artificial leg containing said artificial ankle.Type: ApplicationFiled: January 11, 2011Publication date: March 13, 2014Applicants: NORTHWESTERN UNIVERSITY, FALZ & KANNENBERG GMBH & CO. KGInventors: Felix Starker, Urs Schneider, Andrew H. Hansen, Dudley S. Childress, Joachim Pauli, Carsten Pauli
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Patent number: 8597369Abstract: The present invention relates to a system for use in rehabilitation and/or physical therapy for the treatment of injury or disease. The system can enable an amputee to proceed over any surface without overbalancing. In particular the system is self-adapting to adjust the torque moment depending upon the motion, the extent of inclination, and the surface topography.Type: GrantFiled: October 17, 2007Date of Patent: December 3, 2013Assignees: Northwestern University, The Department of Veteran Affairs, The Rehabilitation Institute of ChicagoInventors: Andrew H. Hansen, Steven A. Gard, Dudley S. Childress, Brian Ruhe, Ryan Williams