Hypodermic needle

Claim 1

AN ASPIRATING CARTRIDGE SYRINGE COMPRISING A HOLLOW TUBE, A CARTRIDGE WITHIN SAID TUBE, A SEALING DIAPHRAGM AT THE BOTTOM END OF SAID CARTRIDGE, A SLIDABLE PLUNGER WITHIN THE TOP END OF SAID CARTRIDGE, BEARING MEANS AT THE UPPER END OF THE TUBE, A PISTON ROD SLIDABLE IN SAID BEARING MEANS, MEANS ON SAID ROD FOR RELEASABLY CONNECTING THE PLUNGER TO SAID ROD, A BOTTOM CLOSURE MEMBER AT THE BOTTOM OF SAID TUBE, A NEEDLE ADAPTOR MEANS CARRIED BY SAID BOTTOM CLOSURE MEMBER, SAID NEEDLE ADAPTOR MEANS INCLUDING A DOUBLE-POINTED HOLLOW NEEDLE PASSING UPWARDLY THROUGH THE BOTTOM CLOSURE MEMBER FOR PIERCING THE DIAPHRAGM OF THE CARTRIDGE, AN AUXILIARY TUBE OPEN AT BOTH ENDS AND REMOVABLY CARRIED BY SAID CLOSURE MEMBER, SAID AUXILIARY TUBE AT THE UPPER END THEREOF RECEIVING SAID NEEDLE ADAPTOR MEANS THEREWITHIN, SAID AUXILIARY TUBE AT THE BOTTOM END THEREOF RECEIVING AND RETAINING AN INVERTED CARTRIDGE HAVING A SEALING DIAPHRAGM AT THE UPPER END THEREOF AND A PLUNGER AT THE BOTTOM END THEREOF WITH THE BOTTOM OF SAID NEEDLE PIERCING SAID INVERTED CARTRIDGE DIAPHRAGM, AND HOLLOW PUNCTURING MEANS PIERCING SAID INVERTED CARTRIDGE PLUNGER WHEREBY TO PERMIT AIR TO ESCAPE FROM SAID INVERTED CARTRIDGE PLUNGER UPON INJECTION THROUGH SAID NEEDLE INTO SAID INVERTED CARTRIDGE OF LIQUID FROM THE CARTRIDGE WITHIN SAID HOLLOW TUBE.