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Balloons for medical devices and fabrication thereof

  • US 4,906,244 A
  • Filed: 07/24/1989
  • Issued: 03/06/1990
  • Est. Priority Date: 10/04/1988
  • Status: Expired due to Term
First Claim
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1. A balloon for a dilatation catheter, the balloon having been made by a process comprising:

  • providing a length of tubing made of a nylon material or of a polyamide material, said length of tubing having a predetermined original outer diameter and a predetermined original wall thickness;

    biaxially orienting a section of said length of tubing by inflating said section with a pressurized fluid in order to increase the diameter of said section to at least in excess of twice said original outer diameter of the length of tubing while thereby simultaneously biaxially orienting the nylon of polyamide material;

    said balloon has a non-distended inflated profile having a predetermined size as well as a distended size that has a radius greater than that of said predetermined non-distended size, and said distended size has an inflated profile larger than that of said non-distended inflated profile; and

    said balloon has a tensile strength greater than non-nylon catheter balloons that have an inflated profile exhibiting a distended size.

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