Auto-injector with needle shroud and needle protection cap
US9205199B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2011 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Mar 31, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H25/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An auto-injector may be used to administer a dose of a liquid medicament (M). In some embodiments, a shroud is arranged inside a housing, the shroud slidable in longitudinal direction between at least a retracted position, in which a hollow injection needle is exposable and an advanced position, in which the needle is covered by the shroud. A protective needle shield is attachable to the needle in a manner to partially protrude beyond the proximal end of the shroud through the orifice with the needle in its advanced position. A syringe carrier is arranged inside the shroud and comprises at least one snap for locking it to the shroud in order to prevent relative axial motion. The snap is configured to automatically disengage upon removal of the protective needle shield to allow the syringe and needle to be retracted into the covered position under load of the syringe spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.