Patent ID: 11931551
Assignee: BECTON DICKINSON FRANCE S.A.S.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A medical injection system adapted for a single-handed injection, the medical injection system comprising:
a housing;
a piston defining a cavity therein, wherein the piston is configured to move relative to the housing;
a gas compartment configured to contain a gas, the gas compartment defined within the housing and the cavity of the piston; and
a reservoir intended to contain a drug composition, the reservoir having a fluid exit configured to receive an injection needle,
wherein the piston is configured to move proximally between a distal position defining a first volume of the gas compartment to a proximal position defining a second volume of the gas compartment smaller than the first volume, and
wherein the gas compartment is configured to be in gas communication with the reservoir in order to force the drug composition through the fluid exit when the piston is moved proximally.