US 11,730,892 B2
Partial door closure prevention spring
Lior Barchen, Gani Tal (IL); and Yossi Bar-El, Beit Arye (IL)
Assigned to West Pharma. Services IL, Ltd., Ra'anana (IL)
Appl. No. 16/321,557
Filed by West Pharma. Services IL, Ltd., Ra'anana (IL)
PCT Filed Dec. 21, 2016, PCT No. PCT/US2016/068049
§ 371(c)(1), (2) Date Jan. 29, 2019,
PCT Pub. No. WO2018/026385, PCT Pub. Date Feb. 8, 2018.
Claims priority of provisional application 62/369,505, filed on Aug. 1, 2016.
Prior Publication US 2019/0151562 A1, May 23, 2019
Int. Cl. A61M 5/32 (2006.01); A61M 5/14 (2006.01); E05B 65/00 (2006.01)
CPC A61M 5/3202 (2013.01) [A61M 5/14 (2013.01); E05B 65/00 (2013.01); A61M 2209/06 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A drug delivery device, comprising:
a housing defining an opening and a chamber configured to receive a drug cartridge;
a motor within the housing;
a door connected to the housing, the door having a range of movement between a fully open position and a closed position, wherein the door blocks access to the opening when the door is in the closed position;
a transmission that is configured to couple the motor and the drug cartridge when the door is in the closed position and decouple the motor and the drug cartridge when the door is in the open position;
a biasing element connected to the housing or the door, wherein the biasing element is positioned to interfere with the movement of the door by applying an opening force to open the door when the door reaches a last 30 degrees of a rotation of the door toward the closed position or when the door reaches a last 30% of the range of movement during the rotation of the door toward the closed position; and
a locking mechanism between the door and the housing, the locking mechanism applying a locking force on the door greater and in an opposite direction to the opening force applied by the biasing element.