Disc therapy
US9950156B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2016 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Sep 13, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3606
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus is provided that includes at least one intra-pulposus exposed electrode surface, configured to be implanted in a nucleus pulposus of an intervertebral disc, and a plurality of extra-pulposus exposed electrode surfaces, configured to be implanted outside the nucleus pulposus, in electrical communication with the intervertebral disc. Control circuitry is configured to separately control at least two of the plurality of extra-pulposus exposed electrode surfaces, and to repeatedly alternatively assume: (a) a pressure-increasing mode of operation, in which fluid is electroosmotically driven into the nucleus pulposus to increase pressure in the intervertebral disc, by applying a first mean voltage of less than 1.23 V between the exposed electrode surfaces, and (b) an oxygen-generating mode of operation, in which oxygen is generated within the nucleus pulposus by electrolysis, by applying a second mean voltage of at least 1.23 V between the exposed electrode surfaces. Other embodiments are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.