Patent ID: 7996065

Claim:
A marker deployment device adapted to selectively deploy at least one marker stored therein to a location external the device, comprising: a cannula defining an axially extending inner lumen adapted to receive at least one marker and an aperture in communication with the inner lumen; a manually actuatable push rod slidably received and movable within the inner lumen of the cannula, wherein the pushrod, upon actuation, is adapted to contact and urge at least one marker distally through the inner lumen of the cannula; a selectively opening outlet door movable between an open position and a closed position, wherein the door (i) is configured to move to the open position upon contact with at least one of the push rod and at least one marker, (ii) obstructs at least a portion of the aperture when in the closed position and (iii) is biased toward the closed position such that the door moves to the closed position after a marker is deployed through the aperture to prevent the marker from re-entering the cannula upon deployment; and an inclined surface positioned within the inner lumen of the cannula adjacent to the aperture, wherein the inclined surface is adapted to guide at least one marker from the inner lumen toward and through the aperture as the marker is urged by the push rod.