Infusion device with releasable fluid connector
An infusion set system includes a base and a fluid connector removably coupleable thereto. The fluid connector includes a fluid path portion and at least one connector latch displaceably connected to the fluid path portion and displaceable to a latching position in which at least a portion of the connector latch extends into the fluid path portion, which includes a cannula extending from a top interior surface thereof, and a plurality of internal sidewalls corresponding to at least two of a plurality of flat side surfaces of at least one of a base section and a base latch, thereby facilitating connection between the base and the fluid connector in a plurality of discrete rotational connecting positions. When the fluid connector is locked to the base, the at least one connector latch engages a base latching portion of the base and restricts proximal displacement of the fluid connector.
1. A needle guard for guarding a sharp cannula of an infusion device, the needle guard comprising:
a proximal portion for connecting to a base of the infusion device; and
a distal portion for user interaction;
wherein the proximal and distal portions each include at least one axial cutout that divides the needle guard into first and second lateral sides; and
wherein a fulcrum web is disposed between the proximal and distal axial cutouts to join the first and second lateral sides of the needle guard and provide a fulcrum for relative rotation of the first and second lateral sides of the needle guard.
2. The needle guard according to claim 1 , wherein the needle guard is integrally formed as a unitary structure.
3. The needle guard according to claim 1 , wherein:
the proximal portion includes a pair of axial cutouts;
the distal portion includes a pair of axial cutouts;
the proximal axial cutouts are substantially aligned with the distal axial cutouts, forming pairs of aligned cutouts; and
the needle guard further comprises a pair of fulcrum webs respectively disposed between the pairs of aligned cutouts.
4. The needle guard according to claim 1 , wherein the distal portion includes a pair of concave sculpted portions for interaction with the user's fingers.
5. The needle guard according to claim 1 , wherein the distal portion includes a plurality of support ribs to increase the structural rigidity of the distal portion.
6. The needle guard according to claim 1 , wherein the proximal portion includes a pair of opposing, inward-cantilevered gripping portions for connecting with the infusion device.
7. A combination, comprising:
the needle guard according to claim 6 ; and
the base of the infusion set, wherein the base includes distally-extending column from which a cannula protrudes distally; the column having an undercut middle portion, thereby forming a lip at its distal end;
wherein the gripping portions of the needle guard engage the lip to selectively retain the needle guard on the base.
8. The combination according to claim 7 , wherein when connected with the base, a proximal portion of the needle guard contacts a proximal ceiling of an annular space surrounding the column.
9. The combination according to claim 8 , wherein the column extends distally beyond a substantially planar distal surface of the base.
10. The combination according to claim 7 , wherein:
the base includes an adhesive on a distal surface thereof; and
the combination further comprises a one-piece release liner having an interior opening therethrough, an external tab, and a single cut extending substantially radially from the tab to the interior opening.
11. The combination according to claim 10 , wherein the interior opening is substantially centered about the column.
12. The combination according to claim 7 , wherein:
the base includes an adhesive on a distal surface thereof; and
the combination further comprises a one-piece release liner covering the adhesive, the release liner comprising:
a flexible planar field portion having an interior opening therethrough, the field portion having a first measurement from a center of the field portion to a perimeter of the field portion; and
a tab portion contiguous with the field portion and extending a second measurement from the center of the field portion to a perimeter of the tab portion, the second measurement being greater than the first measurement, the release liner having a single cut extending substantially linearly from the tab portion to the interior opening.
13. The needle guard according to claim 1 , wherein the proximal portion of the needle guard connects directly to a distal portion of the base of the infusion device.