Autoinjector
US10207052B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 2015 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Jul 21, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/58
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An autoinjector having a piston rod for a piston of a reservoir, the piston rod movable between a primed position and an injection position; an injection spring urging the piston rod towards its injection position; and an injection lock including a control sleeve containing the piston rod and the injection spring. The piston rod includes a radial recess receiving a substantially-spherical blocking element movable between a blocking and unblocking position and urged radially outwards by the piston rod and held in its blocking position by a blocking ring; and a support member fastened in the control sleeve and having a ring with an axial end in contact with the injection spring, the other axial end supports the blocking element. The blocking ring is engaged on the support member and disengaged by the control sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.