# US 10,369,025 B2 · Sensing systems and methods for monitoring gait dynamics

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- Number: US 10,369,025 B2
- Document ID: US10369025B2
- Status: Granted
- Kind: B2
- Application number: 15/287,577
- Filed: 2016-10-06
- Published: 2017-05-04
- Granted: 2019-08-06
- Earliest claimed: 2005-02-02
- Assignees: Ossur Iceland Ehf
- Applicants: Össur Iceland ehf
- Inventors: Arinbjörn Viggo Clausen; Magnús Oddsson
- Web page: https://patentgrep.com/patent/US10369025B2

## CPC

- A61F 2/76: Means for assembling, fitting or testing prostheses, e.g. for measuring or balancing
- A61B 5/1038: {Measuring plantar pressure during gait}
- A61B 5/112: {Gait analysis}
- A61F 2/66: Feet; Ankle joints
- A61F 2/70: electrical
- A61F 2002/5055: {Reinforcing prostheses by embedding particles or fibres during moulding or dipping, e.g. carbon fibre composites}
- A61F 2002/6614: {Feet}
- A61F 2002/6621: {Toes}
- A61F 2002/6642: {Heels}
- A61F 2002/6657: {having a plate-like or strip-like spring element, e.g. an energy-storing cantilever spring keel}
- A61F 2002/6671: {C-shaped}
- A61F 2002/6685: {S-shaped}
- A61F 2002/704: {computer-controlled, e.g. robotic control}
- A61F 2002/705: {Electromagnetic data transfer}
- A61F 2002/7635: {for measuring force, pressure or mechanical tension}
- A61F 2002/7645: {for measuring torque, e.g. hinge or turning moment, moment of force}
- A61F 2002/769: {Displaying measured values}
- A61F 2002/7695: {Means for testing non-implantable prostheses}
- A61F 2005/0188: {having pressure sensors}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Systems and method for monitoring gait dynamics are disclosed. The performance of an orthotic or prosthetic device or other device associated with a limb may be measured based on the resistance of a bending sensor. Data from the sensors is gathered or processed, particularly for purposes of alignment, safety, failure, usage, selection, and artificial proprioception. Information relating to the device may be outputted visually or auditorily to an individual.

## Claims

### Claim 1

A system for providing artificial proprioceptive feedback from a prosthetic foot, the system comprising:
a prosthetic foot operatively coupled to an amputated lower limb of a user;
a sensor system configured to be placed on the prosthetic foot, the sensor system comprising at least one sensor configured to measure a characteristic of the prosthetic foot;
a processor configured to process data from the at least one sensor to determine a condition of the prosthetic foot; and
a user interface configured to provide artificial proprioception to the user based on the data, the user interface configured to be worn by the user at a location on the user's body remote from the prosthetic foot.

### Claim 2 (depends on 1)

The system of claim 1, wherein the user interface is configured to receive signals from the processor via wireless communication.

### Claim 3 (depends on 1)

The system of claim 1, wherein the user interface is configured to provide artificial proprioception to the user via non-electrical sensory feedback.

### Claim 4 (depends on 1)

The system of claim 1, wherein the condition of the prosthetic foot is a stage of a gait cycle of the user.

### Claim 5 (depends on 1)

The system of claim 1, wherein the processor is a remote processing unit.

### Claim 6 (depends on 1)

The system of claim 1, wherein the processor is configured to determine the condition of the prosthetic foot by determining whether the data is inside or outside of a predetermined range or exceeds a threshold value.

### Claim 7 (depends on 1)

The system of claim 1, wherein the sensor system is located on a top surface of the prosthetic foot.

### Claim 8

A system for providing artificial proprioceptive feedback from a prosthetic foot, the system comprising:
a sensor system configured to be placed on a prosthetic foot operatively coupled to an amputated lower limb of a user, the sensor system comprising at least one sensor configured to measure a characteristic of the prosthetic foot;
a processor configured to process data from the at least one sensor to determine a condition of the prosthetic foot; and
a user interface configured to provide artificial proprioception to the user based on the data, the user interface configured to be worn by the user at a location on the user's body remote from the prosthetic foot.

### Claim 9 (depends on 8)

The system of claim 8, wherein the user interface is configured to receive signals from the processor via wireless communication.

### Claim 10 (depends on 8)

The system of claim 8, wherein the user interface is configured to provide artificial proprioception to the user via non-electrical sensory feedback.

### Claim 11 (depends on 8)

The system of claim 8, wherein the condition of the prosthetic foot is a stage of a gait cycle of the user.

### Claim 12 (depends on 8)

The system of claim 8, wherein the processor is a remote processing unit.

### Claim 13 (depends on 8)

The system of claim 8, wherein the processor is configured to determine the condition of the prosthetic foot by determining whether the data is inside or outside of a predetermined range or exceeds a threshold value.

### Claim 14 (depends on 8)

The system of claim 8, wherein the sensor system is located on a top surface of the prosthetic foot.