Miniaturized sensor for physiological pressure measurements
Patent 5018529 Issued on May 28, 1991. Estimated Expiration Date: 
January 31, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 31, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3789667 Catheter tip pressure transducer Catheter Fiber optic pressure sensor with temperature compensation and reference Data transmission system Catheter-tip micromanometer utilizing single polarization optical fiber Optical fiber pressure transducer Optical pressure sensor for measuring blood pressure Patent #: 4691708 InventorsAssigneeApplicationNo. 473054 filed on 01/31/1990US Classes:600/480, Pressure in blood vessel73/705, Photoelectric600/488, Pressure transducer structure600/561Measuring fluid pressure in bodyExaminersPrimary: Smith, Ruth S.Attorney, Agent or FirmForeign Patent References
International ClassA61B 005/02Foreign Application Priority Data1986-06-25 SEAbstractMiniaturized sensor for physiological pressure measurements in situ, including an elastic sleeve (1) with a diaphragm portion through which the hydrostatic pressure is transmitted as a force acting on a light conductor (2) which is supplied with light from an external source and fixed to a support body (3) such that the hydrostatic pressure variations cause elastic, relative positional variations between the end surface (4) of the light conductor (2) and a light-reflecting surface (5) on the support body (3), which in turn gives rise to variations in reflected light intensity transmitted back through the light conductor (2), to serve as a pressure signal.Other References
| |
