Cover unit for use when inserting a puncture device in an anatomical structure such as a vein or an artery and for maintaining said puncture device in the anatomical structure
A cover unit for inserting a puncture device such as a cannula in an anatomical structure such as a vein or an artery and for maintaining said puncture device in said anatomical structure, comprising a flexible film having a glue provided surface, and a removable covering layer to cover said glue provided surface, wherein said cover unit comprises a patient adherent member and a barrier member connected along a connection line, which is arranged close to a puncture site in a patient said film being made of an ultrasound transparent material said barrier member being provided with at least one slit or weakening line extending from next to said connection line to a side edge of the cover unit and provided in said film and said covering layer in the barrier member is removable from the film separately from the corresponding covering layer in the patient adherent member.
