US 7,601,139 B2
Spring launched needle safety clip
Kevin Woehr, Felsberg (Germany); Helmut Freigang, Koerle (Germany); Juergen Fuchs, Bad Emstal (Germany); Juergen Reuter, Alheim (Germany); Klaus Siemon, Koerle (Germany); Joerg Wende, Volkmarsen (Germany); and Frank Hilberg, Kassel (Germany)
Assigned to B. Braun Melsungen AG, Melsungen (Germany)
Filed on Sep. 20, 2002, as Appl. No. 10/251,735.
Application 10/251735 is a continuation in part of application No. 09/965055, filed on Sep. 26, 2001, granted, now 6,623,458.
Prior Publication US 2003/0144627 A1, Jul. 31, 2003
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 5/32 (2006.01)
U.S. Cl. 604—192  [110/198; 110/263] 33 Claims
OG exemplary drawing
 
1. A safety hypodermic needle assembly comprising:
a needle hub having an inner needle assembly, a proximal end and a distal end, the proximal end comprising a threaded member and a syringe tip receiving chamber, and the distal end comprising an opening;
a needle secured to the inner needle assembly and having a needle tip;
a resilient member;
a spring clip for obstructing the needle tip movable by the resilient member to a blocking position;
a pressure trigger having a fluid path, an opening, and a pusher end axially aligned with the syringe tip receiving chamber and slidably movable relative thereto;
a pressure fitting having an elongated arm and a tapered ramp disposed on the elongated arm, the pressure fitting is configured to compress the resilient member when the needle assembly is in a ready position by engaging with the inner needle assembly; and
wherein the spring clip is configured to block the needle tip when the pressure trigger is moved distally within the syringe tip receiving chamber to disengage the pressure fitting from the inner needle assembly.