Electro-optical instruments and methods for producing same
Patent 4803992 Issued on February 14, 1989. Estimated Expiration Date: 
April 29, 2006. 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 29, 2006. 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 3068739 3068742 3123066 3273447 3814081 Method and apparatus for in vivo measurement of blood gas partial pressures, blood pressure and blood pulse Differential fiber optic differential pressure sensor Optical fiber pressure transducer Patent #: 4611600 InventorApplicationNo. 06/857055 filed on 04/29/1986US Classes:600/342, Light conducting fiber inserted in body600/488, Pressure transducer structure600/561Measuring fluid pressure in bodyExaminersPrimary: Jaworski, Francis J.Assistant: Hanley, John C. International ClassesA61B 5/00 (20060101)A61B 5/0215 (20060101) C02F 1/50 (20060101) A61M 25/00 (20060101) A61M 31/00 (20060101) A61N 5/10 (20060101) A61B 17/22 (20060101) A61B 1/00 (20060101) AbstractImprovements in catheters, particularly of the electrooptical type employing light energy and detect and measure body variables, such as blood pressure and flow and the composition of body fluid. Catheter head and medical instrument structures are provided which may be easily fabricated at low cost to receive and hold light pipes and to contain or define optical components, such as reflectors, lenses and the like, to permit their use in detecting such variables while the instrument or catheter is located in the body. Improvements are also provided in the structures of instrument capsules adapted to be swallowed and allowed to pass through the digestive tract for the purpose of detecting body variables such as the composition of body fluid and tissue.Other References
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