Fistula cannula
US11219708B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 8, 2019 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Jul 4, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/0291
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In some examples, a device, which may be used to access vasculature or another hollow anatomical structure of a patient, includes a housing, a cannula mechanically coupled to a housing distal end, and a needle configured to be locked in a deployed configuration in which the needle extends within a cannula lumen and protrudes from the cannula distal end. The needle is configured to slide proximally through the cannula lumen from the deployed configuration into a retracted configuration in which at least a portion of the needle is within a housing lumen. The device further includes at least one needle guide configured to maintain the needle along a path in the housing lumen substantially parallel to the needle guide when the needle moves between the deployed configuration and the retracted configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.