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Dual port thermodilution catheter and method for manufacture

  • US 5,443,074 A
  • Filed: 11/16/1994
  • Issued: 08/22/1995
  • Est. Priority Date: 01/21/1992
  • Status: Expired due to Term
First Claim
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1. A bolus thermodilution catheter for use in monitoring heart function by injecting fluid into the right atrium and measuring fluid temperature downstream, said catheter comprising an inflatable balloon for positioning a distal end of said catheter in a pulmonary artery, said catheter additionally comprising plural lumens and corresponding plural injectate ports for injecting fluid proximal to the tricuspid valve of the heart, a first of said injectate ports being located closer to said balloon than a second of said injectate ports, said plural injectate ports being spaced from each other within the range of 3-4 cm to accommodate hearts of different sizes, so that one of said injectate ports is positioned proximal to the tricuspid valve in the right atrium when said balloon is in said pulmonary artery.

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