Patent ID: 9192722
Filing Date: 2015-11-24
Classification: A61M

Abstract:
1. A pharmaceutical injection device, comprising: a main body case having an opening from which an injection needle retractably protrudes; a pharmaceutical syringe mounting portion that is provided within the main body case and to which a pharmaceutical syringe is removably mounted; a piston that is provided movably with respect to the pharmaceutical syringe; a drive mechanism that drives the piston; a controller that is electrically connected to the drive mechanism; and an orientation sensor that is electrically connected to the controller, wherein the pharmaceutical syringe has a cylinder, a distal end gasket provided on a distal end side within the cylinder, a push-in gasket provided on a rear end side within the cylinder, a separation gasket provided in a middle within the cylinder, a solid pharmaceutical housed in the cylinder between the distal end gasket and the separation gasket, a liquid pharmaceutical housed in the cylinder between the push-in gasket and the separation gasket, and a bypass that sticks out in the outer peripheral direction of the cylinder at a portion of the cylinder between the distal end gasket and the separation gasket, the controller uses the drive mechanism to push the push-in gasket to the distal end gasket side with the piston after detection of an orientation position by the orientation sensor, and the rate at which the push-in gasket is pushed in by the piston is set so that a push-in rate V