Injectors and syringes for medical uses including CT, MRI, angio and thrombectomy and parts therefor, namely, batteries, battery chargers, floor stands, ceiling mounts, syringe and contrast bottle heaters, empty syringes and tubing for administering injections through injectors and syringes, and pumps, reciprocating filling devices, contrast bottle hangers, tubing, spike sets, empty syringes and label printers for filling injectors and syringes; medical perfusion support devices, namely blood vessel bypass devices, pumps, injectors, catheters, syringes, tubing and gas-fluid blenders