Livestock biological and vaccine handling system

A closed delivery system for handling and dispensing a biological product for livestock comprising:

• (a) a prefilled disposable cartridge containing sterile biological product;
• wherein said cartridge includes anterior and posterior ends and a plunger positioned in said posterior end;
• wherein said plunger is movable in said cartridge to dispense said biological product through said anterior end;
• (b) a pistol grip syringe body dispensing member including a main frame and further comprising:
• (i) a tubular barrel portion sized for receiving and supporting said cartridge;
• wherein said barrel portion is hinged to said main frame and is pivotal thereon between open and closed positions;
• wherein said cartridge is slidably inserted into or removed from said barrel portion when said barrel portion is in said open position;
• (ii) a trigger movably mounted on said frame and having an upper end;
• (iii) a link including an aperture therethrough;
• (iv) an elongated plunger rod having a forward end;
• wherein said plunger rod extends through said aperture in said link and is axially aligned with said cartridge when positioned in said barrel portion;
• (v) bias means for biasing said link toward said upper end of said trigger;
• wherein said aperture in said link is sized such that movement of said upper end of said trigger toward said cartridge causes said upper end to engage said link and cause it to tilt relative to said plunger rod so as to frictionally engage said plunger rod and thereby move said plunger rod against said plunger in said cartridge;
• and wherein said bias means is adapted to move said link rearwardly with respect to said plunger rod when said trigger is released.

A closed delivery system for handling and dispensing a biological product for animals comprising:

• (a) a prefilled disposable cartridge containing sterile biological product;
• wherein said cartridge includes anterior and posterior ends and a plunger positioned in said posterior end;
• wherein said plunger is movable in said cartridge to dispense said biological product through said anterior end;
• (b) a pistol grip syringe body dispensing member including a main frame and further comprising:
• (i) a tubular barrel portion sized for receiving and supporting said cartridge;
• wherein said barrel portion is carried by said main frame;
• (ii) a trigger movably mounted having an upper end;
• (iii) a link including an aperture therethrough;
• (iv) an elongated plunger rod having a forward end;
• wherein said plunger rod extends through said aperture in said link and is axially aligned with said cartridge;
• (v) bias means for biasing said link toward said upper end of said trigger:
• (vi) brake means separate from the link and engagable with plunger rod and being adapted (1) to allow said plunger rod to be advanced by movement of said upper end of said trigger, and (2) to prevent rearward movement of said plunger rod;
• wherein said aperture in said link is said such that movement of said upper end of said trigger toward said cartridge causes said upper end to engage said link and cause it to tilt relative to said plunger rod so as to frictionally engage said plunger rod and thereby move said plunger rod against said plunger in said cartridge;
• and wherein said bias means is adapted to move said link rearwardly with respect to said plunger rod when said trigger is released.