Balloon catheter
OwnerWolfram Voelker, Thorsten Siess +1inventors
InventorsWolfram Voelker, Thorsten Siess, Helmut Reul
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Abstract
The balloon catheter comprises a catheter tube (10) provided with a high pressure balloon (14) designed for performing a vessel dilatation. Further provided is at least one low pressure balloon (17) joining the high pressure balloon (14) and expanded with a lower pressure. Thereby, the stress acting on the blood vessel at the ends of the high pressure balloon (14) or a stent (20) is decreased, thus reducing the danger of dissections of the vessel wall.
Claims14
A balloon catheter comprising a catheter tube (10) carrying a first high pressure balloon (14) surrounding the catheter tube (10) and at least one second low pressure balloon (17;
- 17a, 17b) surrounding the catheter tube (10), first means (15) and second means (18) for introducing pressurized fluid into the respective first and second balloons (14;
- 17;
- 17a, 17b), first and second means (21, 22) for maintaining the respective first and second balloons (14:17;
- 17a, 17b) both pressurized in the expanded conditions thereof thereby forming a substantially uninterrupted exterior surface of varied rigidity and substantially uniform diameter, a tubular expandable stent (20) surrounding the first and second balloons, and said tubular expandable stent (20) having an end surrounding said at least one second low pressure balloon (17;
- 17a, 17b).
Dependencies are inferred from the claim text.