Non-invasive nuclear device for communicating pressure inside a body to the exterior thereof
US4124023A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1975 |
| Grant date | Nov 7, 1978 |
| Priority date | — |
| Expiry date | Jul 3, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/03
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A non-invasive nuclear device for communicating pressure inside a body to the exterior, such as from within the cranium, bladder or vena cava, of an animal or human, the device including a housing having an interior communicating through a conduit of deformable metallic material with a fluid pressure sensing device positioned within the body portion being monitored, the housing being mounted on the body adjacent the body portion being monitored, a shaped mass of radioactive material together with radiation shield means being disposed within the housing interior together with urging means for producing a predetermined shielding relationship between the radioactive mass and the shield means, the radioactive mass being supported on the urging means for guide movement relative to the shield means and the sensed pressure being exerted through a pressure transmitting fluid flowing within the deformable metal conduit against the urging means for modifying the shielding relationship between the radioactive mass and the shield means proportionally with a change in fluid pressure in the body cavity thereby producing a radioactive output from the radioactive mass corresponding to the magnitud…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.