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Pressure transducer

  • US 4,610,256 A
  • Filed: 09/25/1984
  • Issued: 09/09/1986
  • Est. Priority Date: 09/25/1984
  • Status: Expired due to Term
First Claim
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1. In a direct blood pressure monitoring system including an indwelling catheter and pressure tubing filled with a fluid for communicating blood pressue pulses to a diaphragm of a pressure transducer, and a monitor for displaying data corresponding to said blood pressure pulses, an apparatus comprising means for placing one side of said diaphragm in communication with said blood pressure pulses in said pressure tubing and catheter, means for venting the other side of said diaphragm to atmospheric pressure, and means for introducing a calibration pressure on the side of said diaphragm that is vented.

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