Barrier coating on blood contacting devices

Details Barrier coating on blood contacting devices Barrier coating on blood contacting devices

1989-12-08

1991-11-26

Howell, Kyle L.

Surgery

Truss

Pad

128673, A61B 50215

Patent

active

050674919

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.

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