Patent GB-1295628-A (GB)
IPC: A61M5/145
Filed: 1970-03-19
Abstract: 1295628 Radioactive solution injecting apparatus NAUCHNO - ISSLEDOVATELSKY INSTITUT ONKOLOGII I MEDITSINSKOI RADIOLOGII MZ BSSR 19 March 1970 13389/70 Heading A5R An apparatus for injecting radioactive solutions into an organism, preferably the lymphatic system, comprises at least one syringe having a piston coupled to a drive means for causing the piston to reciprocate, at least one auxiliary container, an arrangement including a multi-way valve and conduit means for selectively connecting the interior of the or each syringe with the or each auxiliary container or with the organism, and control means for remotely controlling and monitoring solution administration, which control means incorporates a device for controlling and monitoring the amuont of the solution in the or each syringe and the rate of administering the solution. The actuating mechanism 1 is enclosed in a lead casing (2), Figure 1 (not shown) and is coupled with a control board 3. The actuating mechanism 1 includes syringes 5 and 6 and rods 7 and 8 connecting the respective pistons to a bracket 9. Secured to the bracket 9 is a nut 10 interacting with a motion screw 11 which, through the intermediary of a reducing gear 12, is coupled with a reversible electric motor 13. Also provided in the actuating mechanism 1 are the following auxiliary containers: a container 17 for radioactive solution; containers 18 and 19 for a novocaine solution; and containers 20 and 21 for a colloide solution, a fourway valve 22 is used to alternately communicate the syringe 5 with the containers 17, 18, 20 and a pipe 23, the valve 24 similarly communicating the remaining containers. The pipes 23 and 25 are used as a means for communicating the syringe 5 and 6 with a patients lymphatic vessels and for taking a radioactive solution from the storeroom. The control board 3 is provided with switches 30 and 31 enabling setting of the four-way valves 22 and 24, a switch 34 to start the reversible motor 13, a rheostat 36 controlling the speed of the motor 13, a double scale 37 indicating the voltage supplied to the motor and the corresponding rate of feeding of the solution, and a selsyn-receiver 38 having a scale electrically connected to a selsyn-transmitter 39 which is mechanically connected with a turntable roller 40 having a screw slot interacting with the bracket 9. Also included on the control board 3 are signal lamps 32, 33 and 35 and a clock 41. in use, the containers 18, 19 are filled with novocaine solution and the containers 20, 21 filled with colloide solution. The actuating mechanism is then transported to a room where radioactive isotopes are stored, the valves 22 and 24 are set in a position so as to allow the isotopes to be drawn into the syringes 5 and 6 through the pipes 23 and 25 when the motor 13 is started. Having filled the syringes 5, 6, the valves are reset to communicate the syringes 5 and 6 with the container 17 and the isotopes pumped into the container 17. The actuating mechanism 1 is then taken to the patient and the pipes 23 and 25 connected to catheters or needles preliminarily introduced into the patient's lymphatic vessels. The process of injecting the isotope into the lymphatic system is then started, firstly a volume of novocaine from the containers 18, 19 and then the isotopes from the container 17, these processes being carried out using the syringes 5, 6 and the four-way valves 22 and 24.