# Andreas Gruntzig — Patents explained on PatentBrief

Andreas Gruntzig has 1 landmark patent explained in plain English on PatentBrief.

- [Catheter System for Opening and Closing Body Passages](https://patentbrief.org/patent/us/4195637/balloon-angioplasty-catheter-gruentzig) — granted 1980
  This 1980 patent describes a medical catheter system with a guide catheter and a special dilatation catheter that can expand to open or close body passages, like blood vessels.

**Full profile:** https://patentbrief.org/inventor/andreas-gruntzig

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_Source: PatentBrief — https://patentbrief.org. Plain-English explanations of US patents._