Endoscopic tool with suction for facilitating injection of a fluid into a submucosal layer of tissue
US11039850B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2018 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Jul 6, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0089
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoscopic tool for facilitating injection of fluid into a submucosal layer of tissue includes a first cannula, a suction source, a fluid lumen, and a second cannula. The first cannula has a suction surface disposed at a distal end, and defines a suction lumen. The suction source is coupled to the first cannula and creates a negative pressure within the suction lumen. The second cannula is disposed in a fluid lumen separate from the suction lumen, is adapted to be coupled to a source of fluid, and carries a needle at a distal end thereof. The tool draws the mucosal layer via the suction, which enlarges the submucosal layer, and injects a fluid into the enlarged portion of the submucosal layer via the needle, thereby creating a raised portion of tissue around the injection site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.