Separatable infusion set with cleanable interface and straight line attachment

An infusion set connecting apparatus, for an infusion set comprising at least one of a cap and a base, wherein the cap is configured to be rotatable about the base once the two are attached together so an extension tube can be rotated to a desired orientation, comprising:

• a cap having a rotatable coupling member and an alignment opening;
• and
• a base having a post configured to slidably engage the alignment opening of the cap,
• wherein the rotatable coupling member is configured to rotate the cap relative to the base.

A cap for an infusion set, wherein the cap is configured to be rotatable about a base once the two are attached together so an extension tube can be rotated to a desired orientation, comprising:

• a member configured to substantially encircle a post of an infusion set base, having,
• at least one user deflectable side,
• at least one side configured to deflect in response to movement of the user deflectable side, and
• at least one projection disposed upon an inner surface of the side configured to deflect in response to movement of the user deflectable side such that the projection engages and disengages the post of the infusion set base in response to movement of the user deflectable side.

An infusion set connecting apparatus, for an infusion set comprising at least one of a cap and a base, wherein the cap is configured to be rotatable about the base once the two are attached together so an extension tube can be rotated to a desired orientation, comprising:

• a cap having a deflectable coupling member;
• and
• a base comprising at least one cap retaining wall with at least one shouldered surface,
• wherein the deflectable coupling member is configured to releasably couple the cap to the base in a desired rotational position.