Abstract: A remote delivery device is provided which has media portholes in a sidewall, a tail piece attached to a rear end and a cannula attached to a front end. The body contains a plunger assembly which defines an injectable liquid chamber and a marking media chamber. The plunger assembly includes a front barbell plunger, rear barbell plunger and a plunger shaft with an O-Ring seated between the front and rear of said plunger shaft. The body also contains a single internal charge positioned behind the plunger assembly. When the charge is activated, the plunger assembly is thrust forwardly and dispenses an injectable liquid from the injectable liquid chamber through the cannula. Simultaneously, the plunger assembly also dispenses a marking media from the marking media chamber through marking media portholes. The provision of a single internal charge allows for a reduction in the length and weight of the device.

Abstract: A remote delivery device is provided which has media portholes in a sidewall, a tail piece attached to a rear end and a cannula attached to a front end. The body contains a plunger assembly which defines an injectable liquid chamber and a marking media chamber. The plunger assembly includes a front barbell plunger, rear barbell plunger and a plunger shaft with an O-Ring seated between the front and rear of said plunger shaft. The body also contains a single internal charge positioned behind the plunger assembly. When the charge is activated, the plunger assembly is thrust forwardly and dispenses an injectable liquid from the injectable liquid chamber through the cannula. Simultaneously, the plunger assembly also dispenses a marking media from the marking media chamber through marking media portholes. The provision of a single internal charge allows for a reduction in the length and weight of the device.

Abstract: An improved injection dart is disclosed. A flow restrictor positioned at a forward end of a dart body is provided. The flow restrictor has a generally cylindrical restrictor body portion and a radially outward extending flange portion at a forward end thereof. The flange is securely held in position. The restrictor body also having a recess in a rearward end. The flange portion holds said restrictor in a position where an inner bore of a cannula is precisely aligned with the restrictor bore. The restrictor acts to diminish a variable flow rate so that all flow rates above a maximum flow rate are restricted to be less than the maximum flow rate. The flange also keeps a forward end of the flow channel bore open but allows for radially inward deformation of the restrictor at a rear end of said flow channel bore.

Abstract: A pneumatic hypodermic syringe pole of first and second axially connected hollow tubes joined by a coupling cylinder supporting an axially slidable valve member including a hollow valve stem adapted to sealingly engage opening within the end of a hollow syringe body whose opposite end carries a needle. A plunger within the syringe separates the body interior into a drug injection chamber communicating with the needle and a second chamber capable of receiving gas under pressure for driving the plunger to displace a drug from the injection chamber. The first hollow tube operates as a handle for manual grasping and forms a pressurized gas storage compartment open to the axially displaceable valve member. The syringe is axially shiftable internally of the second hollow tube forming a syringe holder with the valve stem being positioned in the path of movement of the axially displaceable syringe.