Subcutaneous infusion device
First Claim
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1. An infusion device, comprising an inserter that can insert a catheter into a skin surface, comprising:
- an infusion device housing, comprising a catheter and a driver for placing said catheter into a skin surface; and
an infusion device base, comprising at least one adhesive layer for releasably securing said infusion device base with said skin surface; and
an introducer needle and a catheter septum, wherein said driver comprises a rotating needle hub fixedly attached to said introducer needle, the driver configured to rotate within said infusion device housing by a force applied by a first spring and press said introducer needle and said catheter into said skin surface;
wherein said rotating needle hub is configured to further rotate within said infusion device housing by a force applied by said first spring and retract said introducer needle from said catheter;
said first spring being a torsion spring extending through said rotating needle hub to permit linear translation of said rotating needle hub relative to the torsion spring as the torsion spring rotates the rotating needle hub.
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Abstract
An infusion system having an integrated inserter and infusion set (10) for containing and placing a flexible catheter (40), and a retractable introducer needle (26), wherein the catheter (40) is isolated from movement after placement. The integrated inserter and infusion set (10) includes a hub (20), having a user push button (30) to activate the device for catheter (40) placement. An adhesive liner (34) can be provided to cover an adhesive layer (36), such as pressure sensitive adhesive (PSA), on the bottom of the device (10).
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Citations
8 Claims
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1. An infusion device, comprising an inserter that can insert a catheter into a skin surface, comprising:
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an infusion device housing, comprising a catheter and a driver for placing said catheter into a skin surface; and an infusion device base, comprising at least one adhesive layer for releasably securing said infusion device base with said skin surface; and an introducer needle and a catheter septum, wherein said driver comprises a rotating needle hub fixedly attached to said introducer needle, the driver configured to rotate within said infusion device housing by a force applied by a first spring and press said introducer needle and said catheter into said skin surface;
wherein said rotating needle hub is configured to further rotate within said infusion device housing by a force applied by said first spring and retract said introducer needle from said catheter;
said first spring being a torsion spring extending through said rotating needle hub to permit linear translation of said rotating needle hub relative to the torsion spring as the torsion spring rotates the rotating needle hub. - View Dependent Claims (2, 3, 4, 7)
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5. A method of placing an infusion device, comprising the steps of:
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placing an infusion device base upon an infusion site and activating a driver to insert a catheter into said infusion site, wherein said driver comprises a rotating needle hub fixedly attached to at least one of a catheter and an insertion needle and configured to rotate within an infusion device housing by a rotation force applied by a first spring to insert the at least one catheter or introducer needle into said infusion site and to retract the rotating needle hub by a further rotation force applied by the first spring;
said first spring being a torsion spring extending through said rotating needle hub to permit linear translation of said rotating needle hub relative to the torsion spring as the torsion spring rotates the rotating needle hub. - View Dependent Claims (6, 8)
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Specification