Needle assembly with retractable cutting edge
US10265097B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2015 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Aug 2, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/3413
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The disclosure relates to a needle assembly for delivering a lead and methods of use. The needle assembly is configured to cut tissue and reduce the potential for cutting vulnerable bodily structures. The needle assembly includes an outer needle with a blunt tip and an inner needle with a sharp tip. The outer needle may be curved, and the inner needle may be curved. When the inner needle is rotated with respect to the outer needle, the inner needle protracts or retracts with respect to the outer needle. A stopping feature on the needle assembly may be included to resist over-rotation or over-extension. The needle assembly provides an initial path that may be further dilated for delivering a lead, such as a vagus nerve stimulation lead to a target site. The target site may be electrically tested with some embodiments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.