Patent · US Active

Autoinjector

US9931467B2 · kind B2 · utility

6Cited by

7References

14Claims

0Family size

Assignee

APTAR FRANCE SAS · FR

Inventors

David Fabien · La Buisse, FR
Antoine Mansencal · Langon, FR
Matthieu Walter · Le Vésinet, FR

Key dates

Filing date	May 24, 2013
Grant date	Apr 3, 2018
Priority date	—
Expiry date	Jul 15, 2036

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C2270/0421
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An autoinjector includes a body (1; 1010), a reservoir containing fluid product, a piston, a needle, a piston rod (5 5; 1005) that is displaceable between a loaded position and an injection position, and an injection spring (8; 1008) to stress 10 the piston rod towards the injection position. The autoinjector also includes an injection lock having a control sleeve (4; 1004) containing the piston rod and the injection spring. The piston rod includes a radial recess (50; 1050) receiving a substantially spherical blocking element (7; 1007) mobile between a blocking position and an unblocking position, stressed radially towards the exterior by the piston rod, and held in the blocking position by a blocking member (23; 1004) that is displaceable relative to the piston rod to release the blocking element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.