Cranial sensor attaching device and method for its use
US5054497A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1990 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Feb 21, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/031
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A sensor attaching device and a method for monitoring physiological pressure and other physiological parameters by application of an external pressure sensor to the surface of the brain is disclosed. The cranial sensor attaching device consists of a series of concentric cylinders, two of which have flanged ends configured in such manner that the flanged end of the outer cylinder expands radially when the flanged end of the inner cylinder is withdrawn through it. This feature prevents the device, once inserted through a hole in the skull, from being withdrawn. The flange on the outer cylinder is configured so that when inserted and expanded it contacts the inner lip (table) of the skull at three equidistant points around the circumference of the hole, thus assuring that the tip of the sensor is positioned tangential to the surface of the brain. A finger nut over the outer cylinder is tightened against the outer table of the skull, securing the device in place so that it cannot be pushed into the brain or rotated within the hole. The end-sensitive sensor is inserted into the inner cylinder and held in position by a screw cap, which protrudes through an incision in the skin. This allo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.