Patent ID: 7070580
Filing Date: 2006-07-04
Classification: A61M

Abstract:
1. An infusion device ( 1 ) comprising a housing ( 3 ) with an upper face plate ( 4 ) and a lower face plate ( 5 ) and a cannula ( 6 ) connected to the lower face plate ( 5 ) and through which a liquid is injected into the skin of a user; means for injecting the liquid, and an adhesive sheet material ( 101 ) placed in connection with the lower face plate ( 5 ) and for securing the infusion device ( 1 ) to the skin; said adhesive sheet material ( 101 ) comprising a backing layer ( 102 ) which has, on a portion of one surface, an adhesive layer ( 103 ); said adhesive layer ( 103 ) being covered by a removable release liner ( 104 ), said sheet and release liner ( 104 ) comprising a central aperture ( 105 ) through which the cannula ( 6 ) may act, characterized in that the release liner ( 104 ) comprises at least one score line ( 106 ) comprising a spiral or helix, that the starting point ( 107 ) for the score line ( 106 ) for stripping the release liner off of the adhesive layer ( 103 ) is placed in the periphery ( 108 ) of the release liner ( 104 ), and that the score line ( 106 ) is an unbroken line that does not intersect itself and continues to an end point ( 109 ) placed on the border of the periphery ( 110 ) of the release liners central aperture ( 105 ).