Safety device with collapsible housing and trigger activation

• Main Authors: Browka, Edward P, McNeill, Phil C, Nichols, Eli B, Henson, Robert, Sanders, Laurie
• Format: Patent
• Language: English
• Published: 19.08.2021
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

Abstract A drug delivery safety device comprising: a needle hub including a cannula having a distal tip; at least two flexible arms adjacent to the needle cannula connecting a trigger housing at a distal end of the cannula to the needle hub, wherein the trigger housing has an aperture exposing the distal tip of the cannula; a trigger mechanism within the trigger housing comprising a spring connecting the trigger housing to the flexible arms and a double leaf spring lock clip comprising an opening aligned with the distal opening of the trigger housing, a first leaf removably engaging the flexible arms and a second leaf engaging the trigger housing, the second leaf including a distal needle tip cover which is in contact with the needle cannula inside the trigger housing, out of alignment with the apertures of the trigger housing and the lock clip; wherein a proximally-directed force applied to the trigger housing compresses the spring, moves the trigger housing proximally and disengages the first leaf of the lock clip from the flexible arms; and wherein a subsequent decrease in the proximal force applied to the trigger housing decompresses the spring and moves the lock clip in a distal direction such that the needle tip cover of the second leaf of the lock clip disengages from the needle cannula and covers the distal tip of the cannula. oO cCo ir