Ingestible device with detachment of tissue penetrating member

An ingestible device suitable for swallowing into a lumen of a gastrointestinal tract of a patient, the lumen having a lumen wall, the ingestible device comprising:

• a housing defining an internal hollow and comprising a stop geometry arranged within the internal hollow and an exit hole,
• a tissue penetrating member disposable in the housing, the tissue penetrating member having a tissue penetrating first end, a second end opposite the first end and a radially outwards facing surface between the first end and the second end, and
• an actuator arrangement comprising:
• a) a pushing portion configured for movement along an axis from a first position and into a second position, the pushing portion being configured for providing a force onto the tissue penetrating member to move the tissue penetrating member from an initial position within the housing to a lodged position where at least a portion of the tissue penetration member is external to the housing and at least partially lodged in tissue of the lumen wall, and
• b) a holder portion coupled with the pushing portion for initial axial movement with the pushing portion, wherein when the pushing portion assumes the first position the holder portion releasably holds the tissue penetrating member in axial retaining engagement,
• wherein, as the pushing portion moves towards the second position, the tissue penetrating member is moved into tissue until the holder portion enters into engagement with the stop geometry of the housing thereby axially stopping the holder portion, whereafter the pushing portion moves further to release the axial retaining engagement and advance the tissue penetrating member into its lodged position.