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CATHETER FOR USE IN DETECTING DISSOLVED GAS IN FLUIDS SUCH AS BLOOD

  • US 3,658,053 A
  • Filed: 08/28/1969
  • Issued: 04/25/1972
  • Est. Priority Date: 08/28/1969
  • Status: Expired due to Term
First Claim
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2. A catheter as defined in claim 1 wherein said apertures are spaced with respect to each other both longitudinally and circumferentially about said exterior periphery of said cannula and are provided in a sufficient number to enable substantially the same amount of gas to pass through the sum of all of the gas diffusion paths per unit time irrespective of the blockage of certain of said gas diffusion paths resulting from local contact of the exterior periphery of said membrane with the blood vessel walls when said cannula and said membrane are disposed in said operative position therein.

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