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Calibrated medical sensing catheter system

  • US 5,992,211 A
  • Filed: 04/23/1998
  • Issued: 11/30/1999
  • Est. Priority Date: 04/23/1998
  • Status: Expired due to Term
First Claim
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1. A calibrated medical sensing catheter system comprising:

  • a container for containing a first calibration fluid in a first volume and a second calibration fluid in a second volume, container having a first pierceable membrane to provide access to the first volume, a second pierceable membrane to provide access to the second volume,a medical sensing catheter, the medical sensing catheter adapted to be disposed within the first volume and the second volume, and means for piercing capable of piercing the first and second membranes wherein the medical sensing catheter has a lumen, and wherein the means for piercing the first and second membranes comprises a rigid fitting having an elongated portion disposed to fit within the lumen, the elongated portion thereby enhancing the rigidity of the catheter in the region into which the elongated portion is disposed wherein the fitting having means for engaging with the first membrane as the sensing catheter is removed from the first volume to thereby dislodge the fitting from the sensing catheter and cause the fitting to remain in the first volume as the sensing catheter is withdrawn from the first volume.

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