Abstract: A catheter insertion device includes a housing, a button including a body and at least one arm extending from the body into the housing to movably couple the button to the housing, the button is movable between a raised position and a depressed position, and a needle hub coupled to the button to move with the button between the raised position and the depressed position. In the raised position, the body of the button is a first distance from the needle hub that reduces visibility of the needle hub through the body of the button. In the depressed position, the body of the button is a second distance from the needle hub less than a first distance that allows visibility of the needle hub through the body of the button.

Abstract: Provided is a fill closure tab or an infusion device incorporating the same. The fill closure tab includes a gripping portion, and seals an insertion mechanism opening with a hydrophobic membrane. The fill closure tab further includes a fill assist mechanism shaped to assist with directing a filling device such as a pen needle or syringe to a fill port of the infusion device.

Abstract: Provided is an insertion mechanism with increased reliability and reduced components. The insertion mechanism uses a single engagement and release clip compressed within a housing of the insertion mechanism to engage a needle hub and catheter hub. A button is provided to move the catheter hub and needle hub in a distal direction until the engagement and release clip reaches a firing window in the mechanism housing. The engagement and release clip expands in the release window to release the needle hub from the catheter hub, permitting a return spring to move the insertion needle proximally while leaving the catheter inserted, and also retains the catheter hub in the deployed position.