Recyclable and adjustable interventional stent for intravascular constriction
US9814564B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2012 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Mar 14, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/001
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A recyclable and adjustable interventional stent for intravascular constriction. The stent main body is divided into three parts and shaped like a waist drum with expansion parts (1, 4) being arranged on the upper and lower parts of the stent main body respectively for supporting and positioning. A variable aperture part (2) is arranged in the middle of the stent main body. The upper expansion part (1) is or is not provided with a coating; the middle variable aperture part (2) and the upper half part of the lower expansion part (4) are covered with a pericardium (3) subjected to anti-calcification treatment; and a metal wire ring (5) is passed through the lowermost edge of the stent. A compound conveying guide pipe is composed of an outer sheath (6) and a core (7). The core (7) is a hollow pipe and a wire hanging groove is arranged on the outer side wall of the tip of the pipe to hang the metal wire ring (5) of the lowermost edge of the stent. A fixing bolt (8) on the outer sheath (6) is used for fixing the relative position between the outer sheath (6) and the core (7). The stent is used to replace conventional pulmonary artery banding as, adhesion not being formed around the hear…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.