Patent-family-84369540

A capsule device (200) suitable for ingestion into a lumen of the gastrointestinal tract of a patient, the capsule device (200) configured as a self-righting capsule comprising: a) a capsule housing (210, 220) comprising a compartment and an exit opening (224), b) a tissue penetrating member (230, 260, 270), and c) an actuator arrangement (240, 250) configured to move the tissue penetrating member (230, 260, 270) into the lumen wall at a target location. The actuator arrangement (240, 250) comprises a drive spring (240) with a first (240a) and a second helical portion (240b) being wound about at least a portion of the first helical portion (240a), wherein a transitional portion of the second helical portion (240b) connects to a transitional portion of the first helical portion (240a). One of the helical portions (240a, b) acts as a tension spring and the other as a compression spring.