Short winged needle and guard
View Patent ↗A winged needle comprises a hollow medical needle which typically is no smaller than 18 gauge carried by a hub. The hub has wings projecting laterally outwardly, the wings having outer tips that are spaced from each other by essentially 20 to 30 mm. A guard for a winged needle tube set is also disclosed, in which the guard comprises a needle guard tube free of wing-receiving slots and defining a forward, open end to receive a winged needle having outwardly extending, substantially unbent wings as positioned within the guard. In some embodiments, the guard comprises a substantially fixed, open mouth having a width of at least 20 mm and a height of at least 5 mm. A novel anchor strip having two flex lines is also provided to the guard.
1. A winged needle set, which comprises:
a hollow medical needle which is essentially no smaller than 17 gauge carried by a hub, said hub also carrying wings projecting laterally outwardly from the hub in opposed directions, said wings having outer tips that are spaced from each other by essentially 20 to 30 mm , the hub being connected to flexible tubing; and
a self-supporting tubular, slot-free hollow needle guard carried on said tubing, said needle guard defining a forward, open end, said hollow guard being proportioned to receive and surround said winged needle with the wings generally projecting laterally outwardly, and the guard carrying a flow-blocking, tapered projection proportioned to sealingly engage a female luer of said winged needle set.
2. The winged needle set of claim 1 in which said outer tips are spaced by no more than essentially 25 mm.
3. The winged needle set of claim 1 in which said open end defines an aperture having a horizontal dimension of essentially at least 20 mm. and a vertical dimension of at least 3 mm.
4. The winged needle set of claim 1 in which said outer tips are spaced by no more than essentially 25 mm.
5. The winged needle set of claim 1 in which said needle guard defines a rear aperture through which said flexible tubing extends, said hub being connected with said flexible tubing with a first portion of the tubing being positioned outside and around a portion of said hub and defining an increased outer diameter, when compared with remaining portions of said flexible tubing, said rear aperture being sized to permit easy sliding of said remaining portions of said flexible tubing, while edges of said rear aperture bind against and form a seal with the first portion of the tubing when said first portion extends through said rear aperture.
6. A guard for a winged needle tube set having a hollow needle, a needle hub, and flexible set tubing attached to said hub, which comprises:
a needle guard tube which is free of wing-receiving slots and defining a forward, open end, said guard tube containing a winged needle of said set having outwardly extending, substantially unbent wings positioned within said guard, said guard comprising a substantially fixed—dimension open mouth having a width of at least 20 mm. and a height of at least 5 mm, and said guard carrying a flow-blocking, tapered projection proportioned to sealingly engage a female luer of said wind needle tube set.
7. The winged needle and flexible tubing of claim 6 in which said open mouth has a horizontal dimension of essentially at least 25 mm.
8. The guard of claim 6 in which said open mouth has a horizontal dimension of no more than essentially 30 mm.
9. The guard of claim 6 in which said needle guard tube has rear end with a rear aperture which is sized to allow said flexible set tubing to pass through it, and a ring defining said aperture, said ring edge having a diameter to retentively engage said set tubing where the set tubing is slightly enlarged in diameter by attachment to a portion of said hub within said set tubing, to retain said needle guard tube in a position that encloses the needle.
10. The guard of claim 6 in which said needle guard defines a rear aperture through which said flexible tubing extends, said hub being connected with said flexible tubing with a first portion of the tubing being positioned outside and around a portion of said hub and defining an increased outer diameter, when compared with remaining portions of said flexible tubing, said rear aperture being sized to permit easy sliding of said remaining portions of said flexible tubing, while edges of said rear aperture bind against and form a seal with the first portion of the tubing when said first portion extends through said rear aperture.
11. A guard for a needle tube set, which comprises:
a needle guard tube defining a forward, open end; an anchor strip attached to said forward end; a first flex line permitting transverse rotational movement of said anchor strip relative to said guard tube; and a second flex line defined in said anchor strip, spaced from said first flex line, permitting further rotational movement of an outer portion of said anchor strip, and a flow-blocking, tapered projection proportioned to sealingly engage a female luer of said winged needle rube set.
12. The guard of claim 11 in which said first flex line is connected to a top wall of said needle guard tube, and is substantially horizontal, to permit substantially vertical transverse rotational movement of said anchor strip.
13. The guard of claim 11 in which said forward, open end is partially defined by a bottom wall of said needle guard, which bottom extends horizontally beyond the top wall of said needle guard.
14. The guard of claim 13 in which said first and second flex lines are spaced apart at about the distance of the inner diameter of said open end, to permit said anchor strip to pivot to close said open end in which said anchor strip occupies an L-shaped configuration with the outer portion of the anchor strip lying against said bottom wall.
15. The guard of claim 14 in which said anchor strip defines an outwardly extending projection between said first and second flex lines.
16. The guard of claim 11 in which said needle guard defines a rear aperture through which said flexible tubing extends, said hub being connected with said flexible tubing with a first portion of the tubing being positioned outside and around a portion of said hub and defining an increased outer diameter, when compared with remaining portions of said flexible tubing, said rear aperture being sized to permit easy sliding of said remaining portions of said flexible tubing, while edges of said rear aperture bind against and form a seal with the first portion of the tubing when said first portion extends through said rear aperture.
17. The guard of claim 11 in which said needle guard tube has rear end with a rear aperture which is sized to allow said flexible set tubing to pass through it, and a ring edge defining said aperture, said ring edge having a diameter to retentively engage said set tubing where the set tubing is slightly enlarged in diameter by attachment to a portion of said hub within said set tubing, to retain said needle guard tube in a position that encloses the needle.
18. The guard of claim 11 in which said forward, open end is partially defined by a bottom wall of said needle guard, which bottom wall extends horizontally beyond the top wall of said needle guard.
19. The guard of claim 11 in which said first and second flex lines are spaced apart at about the distance of the inner diameter of said open end, to permit said anchor strip to pivot to close said open end in which such anchor strip occupies an L-shaped configuration with the outer portion of the anchor strip lying against said bottom wall.
20. The guard of claim 19 in which said anchor strip defines an outwardly extending projection between said first and second flex lines.
21. The guard of claim 11 which carries internal tube centering ribs.
22. The guard of claim 11 , carried by a winged needle set.
23. A guard for a tubular set comprising flexible set tubing, which comprises:
a needle guard tube defining open ends so that the needle guard tube can slide on said set tubing, said needle guard tube carrying a flow-blocking, tapered projection proportioned to sealingly engage a female luer of said tubular set.
24. The guard of claim 23 which is free of needle wing-receiving slots.
25. The guard of claim 23 in which said guard defines a rear aperture through which said flexible tubing extends, said hub being connected with said flexible tubing with a first portion of the tubing being positioned outside and around a portion of said hub and defining an increased outer diameter, when compared with remaining portions of said flexible tubing, said rear aperture being sized to permit easy sliding of said remaining portions of said flexible tubing, while edges of said rear aperture bind against and form a seal with the first portion of the tubing when said first portion extends through said rear aperture.