Infusion set and/or patch pump having at least one of an in-dwelling rigid catheter with flexible features and/or a flexible catheter attachment

A method of making an in-dwelling catheter, comprising the steps of:

• forming, casting, extruding, injection molding, or machining a solid rod to create a multi-lumen catheter comprising a plurality of separated axial grooves passing over at least a portion of said catheter body;
• and
• applying an outer sleeve to at least a portion of said catheter body.

A method of making an in-dwelling catheter as claimed in claim 13, further comprising the step of overmolding at least a portion of said catheter body with said outer sleeve.

A method of making an in-dwelling catheter as claimed in claim 13, further comprising the steps of:

• extruding said outer sleeve;
• and
• assembling said extruded outer sleeve with at least a portion of said catheter body.

A method of making an in-dwelling catheter as claimed in claim 13, further comprising the step of forming a plurality of grooves on an outer surface of said multi-lumen catheter to produce said lumens between an outer surface of said multi-lumen catheter and an inner surface of said outer sleeve.

A method of forming an in dwelling cannula comprising the step of:

• providing a flexible helical coil comprising an axial passage extending from a proximal end of the coil to a distal end of the coil;
• and
• covering the flexible helical coil with a watertight sleeve.

The method of claim 17, further comprising the step of forming a sharpened distal tip.

The method of claim 17 wherein the covering step comprises overmolding the sleeve onto the flexible helical coil.