Torque limiting tamper evident cap
AssigneeMedical Device Engineering, LLC.
InventorPatrick Vitello
Life of this patent
Estimating the term…
Abstract
A torque limiting and tamper evident cap assembly includes a tip cap, an outer cover shrouding the tip cap, and an inner ring disposed around the tip cap. The tip cap and inner ring are configured to rotate as a single unit when a torque is applied to the tip cap. The inner ring and outer cover are configured to support torque in one direction, allowing a user to tighten a syringe onto the tip cap. The inner ring will support a maximum tightening torque before slipping or breaking. The inner ring and outer cover are also configured to slip if an unscrewing motion is applied. The inner ring acts as a tamper evident feature as it becomes free floating within the outer cover when the tip cap is removed for the first time, thereby preventing the outer cover from being re-secured over the tip cap.
Claims7
A tamper evident cap comprising:
- at least an outer cover, a tip cap, and an inner ring;
- said tip cap being dimensioned and configured to receive said inner ring circumferentially around an inner ring engaging portion of said tip cap;
- said tip cap and said inner ring being cooperatively dimensioned to rotate together when a torque is applied to said tip cap, and
- said inner ring including at least one flat and said inner ring engaging portion of said tip cap including at least one flat.
A tamper evident cap comprising:
- at least an outer cover, a tip cap, and an inner ring;
- said tip cap including a tip engaging portion dimensioned and configured to receive a syringe tip, as well as an inner ring engaging portion, said inner ring engaging portion including at least one flat and an interference ring;
- said inner ring including at least one flat, and interference ring, and a plurality of biased fingers,
- said outer cover including a plurality of ring engaging members and a shoulder;
- said inner ring being disposed on said inner ring engaging portion of said tip cap having said flat of said inner ring engaged against said flat of said tip cap;
- and
- said inner ring being further disposed with said interference ring of said inner ring being disposed between said interference ring of said tip cap and said shoulder of said outer cover.
Dependencies are inferred from the claim text.