Pressure sensing catheter
Patent 4924877 Issued on May 15, 1990. Estimated Expiration Date: 
November 25, 2008. 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.
November 25, 2008. 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 3686958 3789667 Data transmission system Optical fiber pressure transducer Circumferential membrane, fluid coupled catheter Patent #: 4711249 InventorAssigneeApplicationNo. 276269 filed on 11/25/1988US Classes:600/561, Measuring fluid pressure in body600/480, Pressure in blood vessel600/486Testing means inserted in bodyExaminersPrimary: Sykes, Angela D.Attorney, Agent or FirmInternational ClassA61B 005/00AbstractA pressure sensing catheter includes a pressure sensor within the length of a hollow catheter insertable into the human body. The catheter has a surrounding circumferential pressure transmitting membrane that is exposed to the region whose pressure is being measured. The membrane bears against a cantilevered shutter whose excursion into a gap in an optical fiber varies the amount of light transmitted by the fiber as a function of the external pressure. | |
