Infusion device and an adhesive sheet material and a release liner

  • US 7,070,580 B2
  • Filed: 04/01/2003
  • Issued: 07/04/2006
  • Est. Priority Date: 04/01/2003
  • Status: Active Grant
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First Claim
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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).

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