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Sensor and method for sensing the concentration of a component in a medium

  • US 5,120,510 A
  • Filed: 12/06/1990
  • Issued: 06/09/1992
  • Est. Priority Date: 10/10/1986
  • Status: Expired due to Term
First Claim
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1. An apparatus for sensing the concentration of a component in blood comprising:

  • sensor means comprising at least one indicator for providing a signal which varies in response to the concentration of a component in blood, and a component permeable, solid polymeric matrix containing said indicator, said sensor means being sized so as to be capable of being positioned within a blood vessel of a patient;

    elongated signal means having a distal end at or near which said sensor means is located, and elongated signal means acting to transmit a signal from said sensor means; and

    sleeve means more rigid than said elongated signal means, said sleeve means being secured to said elongated signal means and extending distally of said distal end of said elongated signal means to at least partially define a pocket in which said sensor means is located, said sleeve means extending around the entire circumference of at least a portion of said sensor means, said sleeve means acting to reduce the possibility of relative movement between said sensor means and said distal end of said elongated signal means.

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