Trapping of intravenous needle associated with a long catheter, and related methods
View Patent ↗Apparatus and methodology are disclosed for entrapping a used intravenous needle in a needle trap and removing the needle and the trap from a catheter tube so as to avoid risk of injury to both the patient and the medical attendant.
1. A needle trap for fail-safe storage of a used withdrawn intravenous needle comprising a body defining a hollow needle-receiving chamber therein to accommodate a proximal withdrawal of the needle, the trap further comprising a distal end and a proximal end, the distal end comprising a one-way valve gate to the chamber through which the needle is displaced and which thereafter prevents distal displacement of the needle from the trap, the proximal end of the trap comprising an abutment preventing proximal displacement of the needle from the trap, wherein, when the one-way valve gate is in an unstressed state, the one-way valve gate defines a rectangular slot opening when viewed from a distal location in a proximal direction and at least one additional aperture extending through the one-way valve gate and offset from the rectangular slot opening.
2. A needle trap according to claim 1 wherein the one way valve gate comprises bifurcated lips.
3. A needle trap according to claim 2 wherein the lips comprise part of a duckbill valve gate.
4. A needle trap according to claim 1 wherein the valve gate comprises at least one flap hinged at a predetermined site to accommodate proximal deflection when forcibly contacted by the needle.
5. A needle trap according to claim 4 wherein the hinge is a living hinge.
6. A needle trap according to claim 4 wherein the at least one flap is selected from the group consisting of one, two and more than two flaps.
7. A needle trap according to claim 1 wherein distal displacement of the valve gate from an at rest position is prevented by at least one of: a stop structure and a diagonal proximally-directed gate construction.
8. A needle trap according to claim 1 wherein the valve gate and the abutment define passageways through which a pull tether extends.
9. The needle trap according to claim 8 , further comprising at least one additional proximal aperture extending through a proximal end of the needle trap, the at least one additional proximal aperture being offset from a tether aperture configured to permit insertion of the tether therethrough.
10. A needle trap for storage of a used intravenous needle comprising:
a needle-receiving chamber including a one-way valve gate to the chamber at a distal end thereof through which the needle is withdrawn after performing a target procedure and which then prevents the needle from exiting the needle trap, the one-way valve gate, when in an unstressed state, defining a slot opening and a first aperture extending through the one-way valve gate offset from the slot opening, a proximal end of the needle receiving chamber comprising an abutment preventing proximal displacement of the needle from the trap.
11. The needle trap according to claim 10 , wherein a proximal end of the needle-receiving chamber comprises an abutment preventing proximal displacement of the needle from the trap.
12. The needle trap according to claim 10 , wherein the slot opening is substantially rectangular.
13. The needle trap according to claim 10 , wherein the one-way valve gate includes opposed lips biased toward the unstressed state, a separation between the lips forming the slot opening.
14. The needle trap according to claim 10 , further comprising a pull tether extending through the trap via passageways through the valve gate and the abutment.
15. The needle trap according to claim 14 , further comprising a proximal aperture extending through a proximal end of the needle trap offset from the passageway through which the tether extends.
16. The needle trap according to claim 10 , wherein the valve gate comprises a flap hinged to accommodate proximal deflection when forcibly contacted by the needle.
17. The needle trap according to claim 10 , wherein distal displacement of the valve gate from a rest position is prevented by at least one of a stop structure and a diagonal proximally-directed gate construction.
18. A needle trap comprising a body defining a hollow needle-receiving chamber therein, a distal end of the body comprising opposed one-way valve flaps to the chamber movable proximally to a needle receiving position by proximally directed force applied as a needle is withdrawn proximally into the needle-receiving chamber, the flaps being biased to return to a locking position after a distal end of the needle has passed proximally therepast wherein, in the locking position, a slot opening remaining between the flaps is sized to prevent a needle received in the needle-receiving chamber from passing therethrough out of the needle-receiving chamber, the proximal end of the trap comprising an abutment preventing proximal displacement of the needle from the trap, the body further comprising an aperture extending through the opposed one-way valve flaps offset from the slot opening.
19. The needle trap according to claim 18 , wherein the opposed one-way valve flaps are coupled to a wall of the needle-receiving chamber via a living hinge and extend proximally at an angle relative to the wall into the needle-receiving chamber.