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US 12,734,306 B2Granted
Rigid needle shield for prefillable staked needle syringe
AssigneeBecton, Dickinson and Company
InventorAlfred W. Prais
Life of this patent
Estimating the term…
Abstract
A rigid needle shield for a syringe includes a main body comprising an internal sidewall defining a bore, and an end cap attached to the main body. The end cap includes at least one frangible tab connected to the sidewall of the main body. The rigid needle shield further includes an elastomeric insert extending through the bore and engaging the end cap. The at least one frangible tab is configured to break from the internal sidewall and advance through the bore upon application of a force to the end cap.
Claims17
A rigid needle shield for a syringe, the rigid needle shield comprising:
- a main body comprising an internal sidewall defining a bore,
- an end cap attached to the main body, the end cap comprising at least one frangible tab with an integral connection formed with the sidewall of the main body at a tip of the at least one frangible tab;
- an elastomeric insert extending through the bore and engaging the end cap,
- wherein the elastomeric insert defines an internal cavity having a needle bore for receiving a needle of the syringe,
- wherein the at least one frangible tab is configured to break the integral connection from the internal sidewall and advance through the bore between the internal sidewall and the elastomeric insert upon application of a force to the end cap;
- wherein each of the at least one frangible tabs comprises an at least partially protruding surface configured to cause the frangible tab to deflect radially inward to allow the frangible tab to advance through the bore;
- and
- wherein deflection of the at least one frangible tab causes radial compression of the elastomeric insert and reduces the diameter of the needle bore.
5 more elements
A system comprising:
- a syringe comprising a barrel and a needle;
- a rigid needle shield attached to a distal end of the syringe, the rigid needle shield comprising:
- a main body comprising an internal sidewall defining a bore;
- an end cap attached to the main body, the end cap comprising at least one frangible tab with an integral connection formed with the sidewall of the main body at a tip of the at least one frangible tab;
- an elastomeric insert extending through the bore and engaging the end cap,
- wherein the elastomeric insert defines an internal cavity having a needle bore for receiving a needle of the syringe,
- wherein the at least one frangible tab is configured to break the integral connection from the internal sidewall and advance through the bore between the internal sidewall and the elastomeric insert upon application of a force to the end cap;
- wherein each of the at least one frangible tabs comprises an at least partially protruding surface configured to cause the frangible tab to deflect radially inward to allow the frangible tab to advance through the bore;
- and
- wherein deflection of the at least one frangible tab causes radial compression of the elastomeric insert and reduces the diameter of the needle bore.
7 more elements
Dependencies are inferred from the claim text.