Method and apparatus for inducing a current and voltage in living tissue
US4993413A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1988 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Sep 22, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for surgically non-invasively inducing, by a time-varying magnetic field, an electrical current and voltage in living tissue, and in particular bone tissue, to prevent osteoporosis and to enhance new bone formation, includes the step of applying a symmetrical signal of low intensity and low frequency to the tissues being treated. The frequency of the induced signal is between about 1 Hertz and 1 K Hertz, and is optimally set at 15 Hertz. The peak intensity of the signal corresponds to a peak value of the inducing time-varying magnetic field of between about 0.5 millitesla per second and 5 Tesla per second, and for a 15 Hertz signal optimally corresponds to a value of 2.5 millitesla per second. A device for inducing such a signal in a limb of a person being treated includes a portable power supply in the form of a battery, a portable signal generator connected to the battery and a multiconductor ribbon cable connected to the signal generator. The multi-conductor ribbon cable has a female connector on one end and a male connector on another end. The female and male connectors are coupled together but are offset laterally from each other to provide at least one free pin on th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.