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

• Current Assignee: Unomedical A/S
• Original Assignee: Unomedical A/S
• Inventors: Nielsen, Jens Egebjerg
• Primary Examiner(s): Thanh, LoAn H.
• APPLICATION: US 20040199123A1
• Time in patent office: 1190 Days
• Field of Search: 604 20- 21, 604/48, 604/93.01, 604/174, 604/180, 128/DIG.6, 424447-449, 428/43
• US Class Current: 604/180
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor suction in pumping blood transfusion A61M1/02; infusion containers A61J1/05
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Abstract

An infusion device (1) comprising a housing (3) with an upper face plate (4) and a lower face plate (5) and an adhesive sheet material (101) placed on the lower face plate (5) for securing the infusion device (1) to the skin, the adhesive sheet material (101) comprising a backing layer (102) which has an adhesive layer (103) on one surface, the adhesive layer (103) being covered by a removable release liner (104), and wherein the release liner (104) comprising at least one score line (106) comprising a spiral or helix, wherein the starting point (107) for the score line (106) is placed in the periphery (108) of the release liner (104) and wherein the score line (106) continues to an end point placed on the border of the periphery (110) of a central aperture (105) of the release liner.

Claims

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).

2. An infusion device (1) according to claim 1, characterized in that the adhesive sheet (101) and release liner (104) are substantially circular.

3. An infusion device (1) according to claim 2, characterized in that the release liner (104) comprises a tab (113) for gripping the release liner (104) and starts the stripping from the starting point (107).

10. The infusion device according to claim 1 wherein the release liner comprises a tab for gripping the release liner and starts the stripping from the starting point.

4. An 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), characterized in that the release liner (104) also 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 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 placed on the border of the periphery (110) of the release liner'"'"'s central aperture (105).

5. An adhesive sheet material (101) according to claim 4, characterized in that the adhesive (101) sheet and the release liner (104) are substantially circular.

6. An adhesive sheet material (101) according to claim 5, characterized in that the release liner (104) comprises a tab (113) for gripping the release liner (104) and starts the stripping from the starting point (107).

11. The adhesive sheet material according to claim 4, wherein the release liner comprises a tab for gripping the release liner and starts the stripping from the starting point.

7. A release liner (104) for covering an adhesive sheet material (101), wherein said adhesive sheet material (101) comprises a backing layer (102) which has, on a portion of one surface, an adhesive layer (103), said adhesive layer (103) being covered by the removable release liner (104), characterized in that the release liner (104) comprises a central aperture and 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 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 placed on the border of the periphery (110) of the release liner'"'"'s central aperture (105).

8. A release liner (104) according to claim 7, characterized in that the release liner (104) is substantially circular.

9. A release liner according to claim 8, characterized in that the release liner (104) comprises a tab (113) for gripping the release liner (104) and starts the stripping from the starting point (107).

12. The release liner according to claim 7, wherein the release liner comprises a tab for gripping the release liner and starts the stripping from the starting point.