Valvuloplasty catheter and methods
US9504807B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2014 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Nov 7, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1088
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A valvuloplasty catheter has a dog-bone shaped balloon with semi-compliant smaller diameter waist and non-compliant larger diameter bulbous end regions. The balloon centers across the valve with the waist adjacent to the annulus. One bulbous region serves to hyperextend the valve leaflets and the other assists in stabilizing the balloon position to reduce migration. The semi-compliant waist increases in diameter as fluid enters the balloon until it comes into contact with the valve annulus. The pressure within the balloon per unit of volume delivery has a greater slope after contact with the annulus than before resulting in a change in slope for the pressure versus volume curve. The diameter of the balloon and annulus are determined at this inflection point when the balloon contacts the annulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.