초록 ▼

The present invention relates to a method for ensuring a constant target speed of a battery driven electrical motor, the battery driven electrical motor being adapted to move a piston rod in an injection device so as to inject a set dose of medicine from the injection device, the method comprising t

The present invention relates to a method for ensuring a constant target speed of a battery driven electrical motor, the battery driven electrical motor being adapted to move a piston rod in an injection device so as to inject a set dose of medicine from the injection device, the method comprising the steps of setting a first target speed to be reached by the motor, determining whether the first target speed can be reached, and, if the first target speed can be reached, maintaining the first target speed until a set dose of medicine has been injected from the injection device, or if the first target speed cannot been reached, setting a second target speed.

대표청구항 ▼

The invention claimed is: 1. A method for ensuring a constant target speed of a battery driven electrical motor, the battery driven electrical motor for moving a piston rod in an injection device so as to inject a set dose of medicine from the injection device, the method comprising:setting a first

The invention claimed is: 1. A method for ensuring a constant target speed of a battery driven electrical motor, the battery driven electrical motor for moving a piston rod in an injection device so as to inject a set dose of medicine from the injection device, the method comprising:setting a first target speed to be reached by the piston rod,determining whether the first target speed can be reached, and,if the first target speed can be reached, maintaining the first target speed until the set dose of medicine has been injected from the injection device, andif the first target speed cannot been reached, setting a second target speed,determining whether the second target speed can be reached, andif the second target speed can be reached, maintaining the second target speed until the set dose of medicine has been injected from the injection device, andif the second target speed cannot be reached, setting a third target speed,determining whether the third target speed can be reached, and,if the third target speed can be reached, maintaining the third target speed until the set dose of medicine has been injected from the injection device, and,if the third target speed cannot been reached, shutting down the motor.