| 主权项 |
1. A cartridge for one-time use in an automated electronic syringe fitting between a syringe piston housing and a needle comprising:
a unitary tubular adapter holding a first fluid volume and having a first end of a first inside and a first outside diameter to be gripped in a co-axial piston housing and a second end of a second outside diameter greater than the first outside diameter and having a segmented receiving groove bayonet mount with an upper side of the groove mount having alternating groove segments being relief and overhang segments, with the overhang segments having a cantilevered axially extending tooth supported near an overhang segment end; and a syringe body holding a second fluid volume and co-axially joinable to the tubular adapter having an inside diameter matching the first inside diameter of the tubular adapter at a region near the co-axial joinder with the tubular adapter and having a segmented flanged base, whereby the first and second fluid volumes are in fluid communication, the base flange segments snugly fitting into the relief segments of the upper side of the groove mount of the tubular adapter, the overhang segments of the groove mount having a circumferential length greater than a base flange segment whereby rotation of a base flange segment in the groove mount forces axial direction raising of the cantilevered tooth under cantilever tension until rotation of the base flange segment passes the tooth wherein the cantilevered tooth is released from tension moving to block counter-rotation of the base segment and snapping down onto the base flange segment creating a fluid seal and an axial fluid path along the matched inside diameters of the tubular adapter and syringe body, the syringe body having a conical nose terminating in an axial one-way valve for fluid outflow from the syringe body and a non-axial one-way valve for fluid inflow from a fluid supply into the syringe body, the syringe body suitable for one-time use with the tubular adapter. |
