US 11,944,788 B2
Auto-injector
Toby Cowe, Woodstock (GB); Matthew John Watts, Woodstock (GB); Dheeraj Ramakrishnan, Hungerford (GB); and Richard Apsey, Hungerford (GB)
Assigned to Owen Mumford Limited, Oxfordshire (GB)
Appl. No. 16/761,552
Filed by Owen Mumford Limited, Woodstock (GB)
PCT Filed Nov. 6, 2018, PCT No. PCT/EP2018/080364
§ 371(c)(1), (2) Date May 5, 2020,
PCT Pub. No. WO2019/086718, PCT Pub. Date May 9, 2019.
Claims priority of application No. 1718315 (GB), filed on Nov. 6, 2017.
Prior Publication US 2020/0261652 A1, Aug. 20, 2020
Int. Cl. A61M 5/20 (2006.01); A61M 5/315 (2006.01); A61M 5/46 (2006.01)
CPC A61M 5/2033 (2013.01) [A61M 5/3157 (2013.01); A61M 5/46 (2013.01); A61M 2005/2013 (2013.01); A61M 2205/14 (2013.01); A61M 2205/3584 (2013.01); A61M 2205/52 (2013.01); A61M 2205/581 (2013.01); A61M 2205/583 (2013.01); A61M 2205/587 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An auto-injector for use with a safety syringe having a syringe plunger, the auto-injector comprising:
a main body that is openable for receiving the safety syringe and closable before operation of the auto-injector;
a plunger driver including a spring that is arranged to provide a force to drive the syringe plunger into a barrel of the safety syringe;
a first detector configured, after activation of the auto-injector, to detect movement of the syringe plunger of the safety syringe to a point on a delivery stroke thereof that is indicative of delivery of a substance from the safety syringe;
a second detector configured to detect a presence of the safety syringe; and
a third detector configured to detect that the main body is in a closed position,
wherein, the first detector is configured to be operable in dependence of the second detector having detected the presence of the safety syringe and the third detector having detected that the main body is in a closed position.