Patents
US 8901775 B2: Implantable wireless power system
- Granted
- 2014-12-02
- Filed
- 2011-03-02 application 13038671
- Type
- Utility · 56 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A wireless power system capable of transmitting power through the skin without percutaneous wires over distances ranging from a few inches to several feet includes an external transmitting coil assembly and a receiving coil assembly. The transmitting coil assembly includes an excitation coil and transmitting resonant coil which are inductively coupled to each other. The receiving coil assembly includes a receiving resonant coil and a power pick-up coil which are also inductively coupled to each other. A high frequency AC power input, such as radio frequency (RF), supplied to the excitation coil inductively causes the transmitting resonant coil to resonate resulting in a local time varying magnetic field. The transmitting and receiving resonant coils are constructed as to have closely matched or identical resonant frequencies so that the magnetic field produced by the transmitting resonant coil is able to cause the receiving resonant coil to resonate strongly also, even when the distance between the two resonant coils greatly exceeds the largest dimension of either coil. The receiving resonant coil then creates its own local time varying magnetic field which inductively produces a voltage in a power pick-up coil to provide power to an active implantable medical device or implantable rechargeable battery.
Source: PVGPATDIS, file of 2026-04-10 (ipg141202.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| EVERHEART SYSTEMS INC. 14 patents | US company or organization | Webster, TX | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Randolph K. Armstrong | Houston, TX | 26 | PVGPATDIS, file of 2026-04-10 | |
| Greg S. Aber | Houston, TX | 18 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H02J | Electric power networks; circuit arrangements or systems for supplying or distributing electric power; systems for storing electric energy | H02J50/12 | PVGPATDIS, file of 2026-04-10 |
| A61M | Devices for introducing media into, or onto, the body ; devices for transducing body media or for taking media from the body ; devices for producing or ending sleep or stupor | A61M60/178 | PVGPATDIS, file of 2026-04-10 |
| H01F | Magnets; inductances; transformers; selection of materials for their magnetic properties | H01F38/14 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2020-07-30 | Name change Change of name | EVERHEART SYSTEMS INC. signed 2020-07-09 | CORVION, INC. WEBSTER, TX | 53366/297 | ECORSEXC, file of 2026-09-25 |
| 2017-03-02 | Name change Change of name | EVERHEART SYSTEMS, LLC signed 2011-05-12 | EVERHEART SYSTEMS INC. WEBSTER, TX | 41868/636 | ECORSEXC, file of 2026-09-25 |
| 2011-08-29 | Name change Change of name | ABER, GREG S. signed 2011-02-28 ARMSTRONG, RANDOLPH K. signed 2011-02-28 | EVERHEART SYSTEMS, INC. WEBSTER, TX | 26822/617 | ECORSEXC, file of 2026-09-25 |
| 2011-03-02 | Assignment Assignment of assignor's interest | ABER, GREG S. signed 2011-02-28 ARMSTRONG, RANDOLPH K. signed 2011-02-28 | EVERHEART SYSTEMS LLC WEBSTER, TX | 25886/835 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.