Method and apparatus for in vivo measurement of blood gas partial pressures, blood pressure and blood pulse
Patent 4201222 Issued on May 6, 1980. Estimated Expiration Date: 
August 31, 1997. 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.
August 31, 1997. 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 3123066 3412729 3822695 Method and arrangement for measuring the concentration of gases Method for monitoring blood gas tension and pH from outside the body Patent #: 4041932 InventorApplicationNo. 05/829420 filed on 08/31/1977US Classes:600/311, Partial pressure of constituent600/480, Pressure in blood vessel600/486, Testing means inserted in body600/502, Pulse indicatorD24/169Hematological or intravenous treatment (41)ExaminersPrimary: Michell, Robert W.Assistant: Tayon, Jeffrey W. Attorney, Agent or FirmInternational ClassesA61B 5/00 (20060101)A61B 5/024 (20060101) A61B 5/0215 (20060101) G01N 21/85 (20060101) AbstractAn optical catheter including an absorption chamber and distensible semipermeable diaphragm are disclosed for the simultaneous measurement of blood gases, blood pressure and pulse rate.Other References
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