Patent ID: 7527610

Claim:
A medical delivery or extraction system, comprising: a needle assembly including a hub, the hub having a verification component and, the hub having a needle connected thereto; a syringe body rotatably and threadably coupled to the needle assembly, an end of the syringe body at least partially disposed within or over the hub; and at least one indicium on the syringe body, the indicium and verification component each configured to travel a spiral path relative to each other as the threadably coupled syringe body and needle assembly are rotated relative to each other, the path of travel of the indicium and the path of travel of the verification component overlapping at a point where the at least one indicium aligns with the verification component at a single concurrent angular and linear orientation denoting a specific desired degree of tightening between the syringe body and the needle assembly representing the presence of a secure connection between the syringe body and the needle assembly, the syringe body and needle hub being retainable in the single concurrent angular and linear orientation.