Tissue repair with space-seeking spirals of filament
US9326791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Nov 15, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00982
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The distal portion of a shape-memory filament extends from a needle containing at least one filament gripping element. To implant the shape-memory filament in tissue, the needle is inserted into a cannula with a flexible and removable hook. During partial withdrawal of the needle, the hook holds the distal portion of the filament stationary to deposit a section of filament in the distal portion of the cannula. The needle is re-advanced, pushing the section of the shape-memory filament to coil or fold within the tissue. Rotation of the needle with the filament gripping element further tightens the coiled or folded filament. Partial withdrawal, re-advancement, rotation and pushing of the needle are repeated to fill, pack, strengthen, enlarge or augment the tissue with the shape-memory filament.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.