Autoinjector, system and method for controlling autoinjector

• Main Authors: ELKJAER JOHNNY, EGESBORG HENRIK, LARSEN MARTIN NORGAARD, JENSEN STEEN, ANDERSEN BJORN KNUD
• Format: Patent
• Language: Chinese; English
• Published: 13.01.2023
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

The invention relates to an autoinjector, a system and a method for controlling the autoinjector. According to one aspect of the present application, there is provided an autoinjector for administering a medicament, comprising: a housing; a cylindrical portion receiver configured to receive the cylindrical portion including the first stopper; a drive module coupled to move the plunger rod between a retracted position and an extended position, the plunger rod configured to move the first stop; a resistance sensor configured to provide a resistance signal indicative of a resistance against movement of the plunger rod; and a processing unit coupled to the driving module and to the resistance sensor; the processing unit is configured to: control the drive module to move the plunger rod toward the extended position at a plunger rod speed; determining the position of a plunger rod; receiving a resistance signal; and control the drive module to adjust the movement of the plunger rod if the resistance signal indicate