# US 10,441,493 B2 · Mobility device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,493 B2 - Document ID: US10441493B2 - Status: Granted - Kind: B2 - Application number: 15/789,573 - Filed: 2017-10-20 - Published: 2018-04-26 - Granted: 2019-10-15 - Earliest claimed: 2016-10-21 - Assignees: Purdue Research Foundation - Applicants: Purdue Research Foundation - Inventors: Brett Francis Adams; Andrew Fan; Nikko George Sadural; Junyan Lim; Jeffrey John Cargill; Sameer Chetan Saiya - Web page: https://patentgrep.com/patent/US10441493B2 ## CPC - A61H 3/00: Appliances for aiding patients or disabled persons to walk about (apparatus for helping babies to walk A47D13/04 {; applying electrical currents by contact electrodes for stimulating motor muscles, e.g. walking assistance A61N1/36003}) - A61H 3/02: Crutches - A61H 3/0277: {Shock absorbers therefor} - A61H 2003/005: {with knee, leg or stump rests} - A61H 2003/007: {secured to the patient, e.g. with belts} - A61H 2003/0211: {with curved ground-engaging means, i.e. rockers} - A61H 2201/0192: Specific means for adjusting dimensions - A61H 2201/165: Wearable interfaces - A61H: PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY (electrotherapy, magnetotherapy, radiation therapy or ultrasound therapy A61N) ## Abstract A mobility device for assisting an individual with limited or altered mobility due to a leg injury or condition. The mobility device includes a rod that defines a longitudinal axis of the mobility device, a foot rest slidably mounted for longitudinal translation along the rod, a seat located at an upper end of the mobility device, and an impact-absorbing mechanism for absorbing impacts transferred from the seat to the rod. The device is configured for securing the thigh of the user's leg to the seat, and securing the foot of the user's leg to the foot rest. ## Claims ### Claim 1 A mobility device for assisting a user with limited or altered mobility due to an injury or condition of a leg of the user, the mobility device comprising: a rod that defines a longitudinal axis of the mobility device: a foot rest slidably mounted for longitudinal translation along the rod; a seat located at an upper end of the mobility device; an impact-absorbing mechanism for absorbing impacts transferred from the seat to the rod; means for securing the thigh of the user's leg to the seat; means for securing the foot of the user's leg to the foot rest; and means for adjusting a longitudinal length of the mobility device; wherein the foot rest is configured to slide along a length of a rail mounted to the rod so that the foot rest is able to move in unison with movement of the seat in a longitudinal direction of the mobility device in response to extensions and retractions of the impact-absorbing mechanism as weight of the user is applied to and removed from the mobility device when walking. ### Claim 2 (depends on 1) The mobility device according to claim 1, wherein the longitudinal length of the mobility device is adjustable at an interconnection between the seat and the impact-absorbing mechanism. ### Claim 3 (depends on 1) The mobility device according to claim 1, the mobility device further comprising a foot pad secured to a lower end of the rod. ### Claim 4 (depends on 3) The mobility device according to claim 3, wherein the longitudinal length of the mobility device is adjustable at an interconnection between the foot pad and the rod. ### Claim 5 (depends on 3) The mobility device according to claim 3, wherein a bottom surface of the foot pad has a profile that is curved in a fore-aft direction of the mobility device. ### Claim 6 (depends on 1) The mobility device according to claim 1, wherein the foot rest is L-shaped and has upper and lower portions, the lower portion being disposed at a greater angle to the longitudinal axis of the mobility device than the upper portion. ### Claim 7 (depends on 1) The mobility device according to claim 1, wherein the impact-absorbing mechanism is a gas spring. ### Claim 8 (depends on 1) The mobility device according to claim 1, further comprising at least one sensor incorporated into the mobility device to acquire data relating to force or pressure transferred by the mobility device to one or more regions of the user's lower leg. ### Claim 9 (depends on 8) The mobility device according to claim 8, further comprising means for wirelessly transmitting the data to a mobile electronic device to monitor the recovery of the user's lower leg. ### Claim 10 A mobility device for assisting a user with limited or altered mobility due to an injury or condition of a leg of the user, the mobility device comprising: a rod that defines a longitudinal axis of the mobility device: a foot rest slidably mounted to the rod with a rail for longitudinal translation along the rod, the foot rest being biased toward a null position along a length of the rail, the foot rest having upper and lower portions, the lower portion being disposed at a greater angle to the longitudinal axis of the mobility device than the upper portion; an impact-absorbing mechanism mounted to the rod for absorbing impacts transferred to the rod; a seat located at an upper end of the mobility device and pivotally coupled to the rod by the impact-absorbing mechanism; means for securing the thigh of the user's leg to the seat; means for securing the foot of the user's leg to the lower portion of the foot rest; means for securing a region of the user's leg above the ankle to the upper portion of the foot rest; and means for adjusting a longitudinal length of the mobility device; wherein the foot rest is configured to slide along the length of the rail mounted to the rod so that the foot rest is able to move in unison with movement of the seat in a longitudinal direction of the mobility device in response to extensions and retractions of the impact-absorbing mechanism as weight of the user is applied to and removed from the mobility device when walking. ### Claim 11 (depends on 10) The mobility device according to claim 10, wherein the longitudinal length of the mobility device is adjustable at an interconnection between the seat and the impact-absorbing mechanism. ### Claim 12 (depends on 10) The mobility device according to claim 10, the mobility device further comprising a foot pad secured to a lower end of the rod. ### Claim 13 (depends on 12) The mobility device according to claim 12, wherein a bottom surface of the foot pad has a profile that is curved in a fore-aft direction of the mobility device. ### Claim 14 (depends on 12) The mobility device according to claim 12, wherein the longitudinal length of the mobility device is adjustable at an interconnection between the foot pad and the rod. ### Claim 15 (depends on 10) The mobility device according to claim 10, wherein the impact-absorbing mechanism is a gas spring. ### Claim 16 (depends on 10) The mobility device according to claim 10, wherein the foot rest is L-shaped. ### Claim 17 (depends on 10) The mobility device according to claim 10, further comprising at least one sensor incorporated into the mobility device to acquire data relating to force or pressure transferred by the mobility device to one or more regions of the user's lower leg. ### Claim 18 (depends on 10) The mobility device according to claim 10, further comprising a mobile electronic device that collects and displays data relating to force or pressure transferred by the mobility device to one or more regions of the user's leg.