Safe ejection intravenous needle
US11638789B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2019 |
| Grant date | May 2, 2023 |
| Priority date | — |
| Expiry date | Oct 21, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/276
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ejection-type safety intravenous needle includes a sheath, a hub, a cannula fixed on the hub, and a base. An accommodation cavity is formed in the base. The hub is fixed in the accommodation cavity, and the cannula is exposed outside of the accommodation cavity. The sheath encloses the cannula, and a bottom of the sheath is located in the accommodation cavity and provided with a first limiting structure. A second limiting structure cooperating with the first limiting structure is provided at a top of the accommodation cavity. An elastic element is provided in the accommodation cavity, and the elastic element abuts against a bottom end of the sheath. A top and a bottom of the base are provided with a first clamping structure and a second clamping structure, respectively. A third clamping structure cooperating with the first clamping structure and the second clamping structure is provided on the sheath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.