Fluid containment structure for transducer system
First Claim
1. In pressure transducer apparatus comprising a pressure transducer having a pressure transducing wall and means for providing an electrical output representative of pressure exerted against said wall, wall means forming a structure for containing fluid for pressure interaction with said transducer wall without direct contact between the fluid and said transducer wall, said fluid containment structure having a diaphragm wall positioned for contact with said transducer wall, said diaphragm wall being sufficiently compliant to provide transmission between fluid pressure in said containment structure and said transducer wall;
- the improvement wherein means are provided for venting gas from between said diaphragm wall and said transducer wall.
0 Assignments
0 Petitions
Accused Products
Abstract
Pressure transducer apparatus primarily for medical use in determining the hemodynamic pressure associated with circulation of the blood. The pressure transducing wall is in contact with a highly compliant diaphragm wall of a fluid container adapted for connection to a patient'"'"'s blood system. In order to prevent distortion in the blood pressure wave as it is transmitted through the container diaphragm wall to the transducing wall, means are provided for venting air trapped between the diaphragm and the transducing wall.
-
Citations
8 Claims
-
1. In pressure transducer apparatus comprising a pressure transducer having a pressure transducing wall and means for providing an electrical output representative of pressure exerted against said wall, wall means forming a structure for containing fluid for pressure interaction with said transducer wall without direct contact between the fluid and said transducer wall, said fluid containment structure having a diaphragm wall positioned for contact with said transducer wall, said diaphragm wall being sufficiently compliant to provide transmission between fluid pressure in said containment structure and said transducer wall;
- the improvement wherein means are provided for venting gas from between said diaphragm wall and said transducer wall.
- View Dependent Claims (2, 3, 4, 5, 6)
- 7. A fluid containment structure for use with transducers, said containment structure comprising wall means for confining fluid therein, said wall means having a portion thereof in the form of a compliant diaphragm responsive to fluid pressures in said containment structure for transmitting such pressures by contact with a transducer, and means on the outer surface of said diaphragm forming passages for venting gas from substantially all areas of the diaphragm to the periphery of said diaphragm at a plurality of locations around said periphery.
Specification