Catheter and treatment methods for lower leg ischemia
US10159822B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2016 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Jan 27, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1061
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of treating lower leg ischemia in a patient includes advancing a wire guide upstream through a vascular access sheath extending into an artery of the patient at a percutaneous entry point in the lower leg, and increasing a downstream flow of blood through the artery at least in part by dilating a constriction in the artery with a treatment mechanism guided into the constriction via the wire guide. A low profile balloon may be used as the treatment mechanism, and is advanced through the artery while the vascular access sheath protects the artery from irritation such that spasm of the artery is less likely to occur. Reduced risk of spasm advantageously enables retrograde access to chronic total occlusions such that multiple entry points into a patient's body are not necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.