Barrier coating on blood contacting devices
US5067491A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1989 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Dec 8, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/0038
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A blood pressure monitoring device includes a pressure sensing element mounted or a probe tip or in a catheter tip adapted for insertion into a patient's blood stream. The element includes a pressure transducer having a micromachined diaphragm which flexes in response to pressure changes. The flexes are converted by the transducer to electrical signals which pass back through the catheter to a display. The element and the catheter are conformally coated with a thin layer of parylene which insulates the device from the deleterious effects which blood components such as water and ions would otherwise have on various components of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.