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Catheter with selectively rigidified portion

  • US 4,773,901 A
  • Filed: 02/21/1984
  • Issued: 09/27/1988
  • Est. Priority Date: 12/31/1981
  • Status: Expired due to Term
First Claim
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1. A catheter comprising an elongated relatively flexible body portion formed of a hydrophobic polymer and including a reversibly rigidified tip portion of minor longitudinal extent, said top portion only including a physiological fluid-insoluble hydrophilic non-hydrated polymeric coating for rendering the top portion relatively rigid in a dry state, said coating being relatively flexible when hydrated by a physiological fluid.

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