Posture state classification for a medical device
US8958885B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2009 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Jun 29, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H50/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
One embodiment relates to a medical device including a sensor to provide signals indicative of a detected posture state of a patient. A memory stores one or more defined vectors, each defined vector being associated with a tolerance describing a relationship with the defined vector. A processor determines a respective similarity between the detected vector and each of one or more of the defined vectors and classifies a posture state of the patient based on whether any similarity has a relationship to the respective defined vector that is described by the associated tolerance. In one embodiment, the similarity is determined without regard to a coordinate system of the patient. Another embodiment relates to determining the similarity based on at least one of an inner product, a length of the defined posture vector and a length of the detected vector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.