Device for manometric measurement of the esophagus
Patent 5297437 Issued on March 29, 1994. Estimated Expiration Date: 
April 9, 2012. 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.
April 9, 2012. 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 3480003 Esophageal transducer Electro-optical instruments and methods for producing same Pressure sensing catheter Fiber optic intravascular blood pressure transducer Miniaturized sensor for physiological pressure measurements Patent #: 5018529 InventorApplicationNo. 865971 filed on 04/09/1992US Classes:73/705, Photoelectric250/231.19, Pressure-responsive light valves356/480, Resonant cavity600/593Esophagus, stomach, or lower alimentary canalExaminersPrimary: Woodiel, Donald O.Attorney, Agent or FirmInternational ClassG01L 009/00AbstractA device for manometric measurement of the oesophagus has a catheter with a pressure sensor and a recording unit with a light source for monochromatic and coherent light, and a counting unit for light pulses. The pressure sensor is constructed as a Fabry Perot measuring section and has a pliable optical fiber embedded in elastic base material. The optical fiber is connected via a fiber-optic light guide to the recording unit (3). One end (6) of the optical fiber (5) is metal-coated and the other end (7) is partially metal-coated and connected to the fiber-optic light guide (8). The fiber-optic light guide (8) conveys not only the light from the light source to the optical fiber but also the light pulses from the optical fiber to the counting unit. | |
