Delivery system with hooks for resheathability
US9078659B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2012 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Aug 15, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/9665
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Described herein are flexible implantable devices or stents that can, for example, navigate the tortuous vessels of the neurovasculature. The devices can also conform to the shape of tortuous vessels of the vasculature. In some embodiments, the devices can direct blood flow within a vessel away from an aneurysm or limit blood flow to the aneurysm. Methods and structures are provided for adjusting, along a length of the device, the porosity of the device while maintaining a cross-sectional dimension. In some embodiments, small hooks releasably engage the stent at a proximal end and are able to resheath the stent by retracting a proximal retaining member where the hooks are coupled to. The hooks straighten, unfurl, or otherwise disengage the stent when either unrestrained by a catheter or when coming into contact with an external stimulus found in the patient's vasculature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.