A manually operated needle-shielding safety device attachable to a standard hypodermic needle and syringe medical apparatus (42). By forward directed thumb or finger stroke upon a proximally projecting pushrod (128) slidably operable within a pushrod channel (82) positioned parallel to and radially removed...http://www.google.de/patents/US5152751?utm_source=gb-gplus-sharePatent US5152751 - Hypodermic needle safety shield
