Injection or infusion device comprising an improved housing and release liner for removing sterile barrier films using the release liner
Inventors
Burren, Stefan • Bernhard, Mario • Schenker, Susanne • Mellenberger, Andres • Schrul, Christian • Tschirren, Markus
Assignees
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Publication Number
US-12208236-B2
Publication Date
2025-01-28
Expiration Date
Abstract
An injection device configured for attachment to the skin of a patient includes a housing and a skin adhesive layer attached to an external surface of the housing for attaching the injection device to the skin of a patient. A release liner covering the skin adhesive layer prevents the injection device from attaching to the skin. A film with one end connected to a surface inside of the housing forms a removable sterile barrier and the other end connected to an external surface of the release liner without contacting the skin adhesive layer. The housing, skin adhesive layer and release liner each include a notch defining a passage for the film so that the second end of the film can extend from the interior to the exterior of the housing.
Core Innovation
The invention relates to an injection device configured for attachment to skin of a patient, including a housing, a skin adhesive layer coupled to an outside surface of the housing, and a release liner covering the skin adhesive layer to prevent skin attachment. The device includes one or more films that form removable sterile barriers, with a first end coupled to an internal surface of the housing and a second end coupled to an exterior surface of the release liner without contacting the skin adhesive layer.
The housing, the skin adhesive layer, and the release liner each include a notch or an aperture that defines a passage extending between an interior of the housing and an exterior of the housing. The second end of the film extends through the passage to the exterior of the housing, and at least one of the notches or apertures comprises a U-shaped aperture defining a notch opening configured to receive the film.
The description further includes a cover to close the notch opening, rounded notch edges, and a strengthening sheet configured to reduce liner tearing or fracture near the notch. It also integrates sterile barriers with internal fluid path passages and cartridge components such as a septum covered by a removable sterile barrier film, and describes an optional sensing patch unit with capacitive sensors and conductive shielding areas on the release liner and/or strengthening sheet.
Claims Coverage
The document provides two independent claims for an injection device with a skin adhesive layer, a release liner, and removable sterile barrier films arranged with notches or apertures that define passages through which film ends extend to the exterior. The inventive features are centered on internal-to-external coupling of film ends without contacting the skin adhesive and on notch or aperture geometry, including U-shaped apertures defining notch openings configured to receive the film, with one or two removable sterile barrier films in the independent claim scope.
Skin adhesive and release liner preventing skin attachment
An injection device comprising a housing, a skin adhesive layer coupled to an outside surface of the housing configured for attaching the injection device to the skin of the patient, and a release liner covering the skin adhesive layer thereby preventing skin attachment of the injection device.
Removable sterile barrier film with internal coupling and exterior coupling without contacting adhesive
A first film comprising a first end and a second end, wherein the first end is coupled to an internal surface of the housing and forms a removable sterile barrier, and wherein the second end is coupled to an exterior surface of the release liner without contacting the skin adhesive layer.
Notches or apertures defining a passage between housing interior and exterior for film extension
Each of the housing, the skin adhesive layer and the release liner comprises a notch or an aperture, wherein the notches or apertures define a passage extending between an interior of the housing to an exterior of the housing, and wherein the second end of the first film extends through the passage to the exterior of the housing.
U-shaped aperture defining notch opening configured to receive the film
At least one of the notches or the apertures comprises a U-shaped aperture defining a notch opening configured to receive the first film.
Two removable sterile barrier films passing through passages without contacting adhesive
An injection device comprising a second film comprising a first end and a second end, wherein the first end is coupled to another internal surface of the housing and forms a removable sterile barrier, and wherein the second end is coupled to an exterior surface of the release liner without contacting the skin adhesive layer.
Across the two independent claims, the core claim coverage is the arrangement of removable sterile barrier films whose first ends couple to internal housing surfaces and whose second ends couple to the exterior of a release liner without contacting the skin adhesive, with housing, adhesive layer, and liner notches or apertures defining passages to the exterior, including at least one U-shaped aperture defining a notch opening configured to receive the film.
Stated Advantages
Documented Applications
No documented applications found
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