Angled inserter for drug infusion
An infusion set adapted to be secured to a skin surface includes a fixed base member and a movable slide member. The fixed base member is connectable to the skin surface. The movable slide member has a needle or cannula connected thereto and is movable relative to the fixed base member. The movable slide member is movable from a first position in which the needle or cannula is not exposed externally of the fixed base member to a second position in which the needle or cannula is exposed externally of the fixed base member. A hub is fixedly connected to the movable member and has a slot extending rearwardly in a lower surface from a first end thereof. The needle or cannula is received in the slot. The movable slide member is locked to the fixed base member in the second position.
1. A hub for an infusion set adapted to be secured to a skin surface, comprising:
a body member having a first end and a second end;
a bore extending from said first end to said second end;
a needle or cannula disposed in said bore such that a distal end of said needle or cannula extends beyond said first end of said body member; and
a slot extending rearwardly in a lower surface of said body member from said first end of said body member, said slot extending into said bore;
wherein a rounded protrusion having two opposing side portions adjoining a rear portion surrounds said slot, around each of which side and rear portions said needle or cannula can bend; and
wherein said slot defines a plane which intersects a longitudinal axis of said bore at an angle of less than 90 degrees.
2. The hub according to claim 1 , wherein
an adhesive secures said needle or cannula in said bore, said adhesive being disposed rearwardly of a rear end of said slot.
3. The hub according to claim 1 , wherein
a planar surface at said first end of said body member limits an insertion depth of said needle or cannula.
4. The hub according to claim 1 , wherein
a septum seals said bore at said second end of said body member.
5. The hub according to claim 1 , wherein
said rounded protrusion has approximately a 0.020 inch radius.
6. The hub according to claim 2 , wherein
a portion of said needle or cannula between said first end of said body member and said adhesive has a length of approximately 0.158 inches.
7. The hub according to claim 2 , wherein
said adhesive is spaced from said lower surface of said body member.
8. A hub for an infusion set adapted to be secured to a skin surface, comprising:
a body member having a first end and a bore;
a needle or cannula disposed in said body member; and
a slot extending rearwardly from said first end in a lower surface of said body member, said slot extending into said bore, and said needle or cannula being disposed in said slot;
wherein a rounded protrusion having two opposing side portions adjoining a rear portion surrounds said slot, around each of which side and rear portions said needle or cannula can bend; and
wherein said slot defines a plane which intersects a longitudinal axis of said bore at an angle of less than 90 degrees.
9. The hub according to claim 8 , wherein
an adhesive secures said needle or cannula in said body member, said adhesive being disposed rearwardly of a rear end of said slot.
10. The hub according to claim 8 , wherein
a planar surface at said first end of said body member limits an insertion depth of said needle or cannula.
11. The hub according to claim 8 , wherein
said rounded protrusion has approximately a 0.020 inch radius.
12. The hub according to claim 9 , wherein
a portion of said needle or cannula between said first end of said body member and said adhesive has a length of approximately 0.158 inches.
13. The hub according to claim 9 , wherein
said adhesive is spaced from said lower surface of said body member.
14. An infusion set assembly adapted to be secured to a skin surface, comprising:
an infusion set including
a fixed base member connectable to the skin surface;
a movable slide member having a needle or cannula connected thereto and movable relative to said fixed base member, said movable slide member being movable from a first position in which said needle or cannula is not exposed externally of said fixed base member to a second position in which said needle or cannula is exposed externally of said fixed base member; and
a hub fixedly connected to said movable slide member and having a bore and a slot extending rearwardly in a lower surface from a first end thereof, said slot extending into said bore, and said needle or cannula being received in said slot; and
an inserter removably connected to said infusion set for moving said movable slide member from said first position to said second position;
wherein a rounded protrusion having two opposing side portions adjoining a rear portion surrounds said slot, around each of which side and rear portions said needle or cannula can bend; and
wherein said slot defines a plane which intersects a longitudinal axis of said bore at an angle of less than 90 degrees.
15. The infusion set assembly according to claim 14 , wherein
an adhesive secures said needle or cannula in said hub, said adhesive being disposed rearwardly of a rear end of said slot.
16. The infusion set assembly according to claim 14 , wherein
a planar surface at said first end in a body member of said hub limits an insertion depth of said needle or cannula.
17. The infusion set according to claim 15 , wherein
said adhesive is spaced from said lower surface of said hub.
18. The hub according to claim 1 , wherein
said slot is configured to allow said needle to bend.