Apparatus for selectively establishing a needleless injection port on IV tubing, and associated methods
Apparatus enables one or more needleless injection ports to be established on IV tubing as needed. An IV tubing-engaging portion secures the apparatus about the tubing. A puncturing member establishes fluid communication between the IV line and a sealing member on the apparatus. Connecting a syringe to the sealing member establishes fluid communication between the IV line and the syringe, enabling an injection to be made. When the syringe is withdrawn, the sealing member reseals to prevent fluid leakage from the IV line.
1. Apparatus configured to be secured to intravenous (IV) tubing to establish a needleless injection/aspiration port on the IV tubing, the apparatus comprising:
an IV tubing-engaging portion having an internal surface configured to snugly engage an external surface of the IV tubing;
a tubular branch portion extending from the IV tubing-engaging portion, the branch portion including a lumen;
a first elastomeric sealing member located at a junction of the IV tubing-engaging portion and the branch portion, the sealing member fluidly isolating the lumen of the branch portion from an interior of the IV tubing-engaging portion;
a compressible piston portion engaging the branch portion, a central shaft of the piston portion disposed at least partially within the lumen of the branch portion, the central shaft including a lumen;
a puncturing member extending distally from the central shaft and including a lumen and a pointed distal tip;
a valve member engaging a proximal end of the piston portion, the piston portion including a second elastomeric sealing member that provides selective sealing of a proximal end of the piston portion;
a stabilizer extending proximally from an exterior surface of the IV tubing-engaging portion, the stabilizer engaging an exterior of the piston portion to support the piston portion during rotation relative to the branch portion; and
wherein relative translation of the piston portion with respect to the branch portion in a first direction drives the pointed tip of the puncturing member through the first elastomeric sealing member and through a sidewall of the IV tubing to establish fluid communication between an interior of the IV tubing and the lumen in the puncturing member.
2. The apparatus of claim 1 , wherein the stabilizer comprises first and second uprights located on opposite sides of the piston portion.
3. The apparatus of claim 1 , wherein the stabilizer and the piston portion include overlapping flanges that resist axial movement of the piston portion proximally with respect to the stabilizer.
4. Apparatus configured to be secured to intravenous (IV) tubing to establish a needleless injection/aspiration port on the IV tubing, the apparatus comprising:
an IV tubing-engaging portion having an internal surface configured to snugly engage an external surface of the IV tubing;
a tubular branch portion extending from the IV tubing-engaging portion, the branch portion including a lumen;
a first elastomeric sealing member located at a junction of the IV tubing-engaging portion and the branch portion, the sealing member fluidly isolating the lumen of the branch portion from an interior of the IV tubing-engaging portion;
a compressible piston portion engaging the branch portion, a central shaft of the piston portion disposed at least partially within the lumen of the branch portion, the central shaft including a lumen;
a puncturing member extending distally from the central shaft and including a lumen and a pointed distal tip;
a valve member engaging a proximal end of the piston portion, the piston portion including a second elastomeric sealing member that provides selective sealing of a proximal end of the piston portion;
wherein relative translation of the piston portion with respect to the branch portion in a first direction drives the pointed tip of the puncturing member through the first elastomeric sealing member and through a sidewall of the IV tubing to establish fluid communication between an interior of the IV tubing and the lumen in the puncturing member; and
wherein the IV tubing-engaging portion further comprises a clamp configured to pinch the IV tubing to restrict fluid flow therethrough.
5. A method of securing apparatus to intravenous (IV) tubing to create a needleless injection/aspiration port on the IV tubing, the method comprising:
positioning a first section of an IV tubing-engaging portion of the apparatus on the IV tubing;
moving a second section of the IV tubing-engaging portion relative to the first section to at least partially surround a length of the IV tubing and to bring an internal surface of the IV tubing-engaging portion into snug engagement with an external surface of the IV tubing;
engaging an injection apparatus with a valve member of the apparatus such that a male portion of the injection apparatus penetrates a slit in a first elastomeric sealing member of the valve member to open fluid communication through the valve member;
translating the valve member and a piston portion to which the valve member is secured in a first direction relative to a tubular branch portion extending perpendicularly to the IV tubing-engaging portion;
advancing the piston portion toward the IV tubing as the piston portion translates relative to the branch portion;
advancing a puncturing member that extends distally from the piston portion toward the IV tubing as the piston portion advances toward the IV tubing;
puncturing a second elastomeric sealing member located at a junction of the IV tubing-engaging portion and the branch portion with the puncturing member as it advances toward the IV tubing; and
puncturing the IV tubing with the puncturing member to establish fluid communication between an interior of the IV tubing and a lumen in the puncturing member; and
clamping the IV tubing to restrict fluid flow therethrough from a point upstream of the puncturing member.
6. The method of claim 5 , wherein bringing the internal surface of the IV tubing-engaging portion into snug engagement with the external surface of the IV tubing establishes a seal at an interface between the internal surface and the IV tubing.
7. The method of claim 5 , wherein engaging the injection apparatus with the valve member includes engaging a first Luer fitting on the injection apparatus with a second Luer fitting on the valve member and rotating the injection apparatus relative to the valve member.
8. The method of claim 5 , wherein advancing the piston portion toward the IV tubing comprises advancing a central shaft of the piston portion into a lumen of the branch portion.
9. The method of claim 5 , wherein as the puncturing member advances through the second elastomeric sealing member the second elastomeric sealing member creates a seal at an interface between the puncturing member and the second elastomeric sealing member.
10. The method of claim 5 , further comprising latching the first and second sections of the IV tubing-engaging portion to one another to resist removal of the apparatus from the IV tubing.
11. The method of claim 5 , further comprising injecting a fluid from the injection apparatus through the valve member and into the IV tubing.
12. The method of claim 5 , further comprising disengaging the injection apparatus from the valve member to reestablish a seal at the slit in the first elastomeric sealing member.