Abstract: A medical catheter device that has a housing containing a needle and needle hub that are movable between a retracted position where the needle is safely within the protection of the housing and an extended position where the needle extends from the housing for insertion into a patient. After use, the needle can be moved to its retracted position to protect the user from inadvertent sticks from the needle. At the distal end of the catheter housing, there is a hub support having a through hole through which the needle extends when in its extended position. A flexible hollow trunk extends proximally from the through hole back into the housing and through which the needle passes. When the needle is withdrawn into its retracted position, the needle is physically caused to be moved off center so as to not realign with the through hole, however, the needle end remains encased within the flexible hollow trunk to prevent blood from entering the through hole into the interior of the housing.