US Patent

US8021335 — Prefilled syringe jet injector

Formulation · Assigned to Antares Pharma Inc · Expires 2026-10-04 · 0y remaining

Vulnerability score 65/100 Moderate — design-around opportunities exist

What this patent protects

This patent protects a prefilled syringe jet injector that uses an energy source to inject a medicament at a pressure of between about 80 and 1000 p.s.i.

USPTO Abstract

A jet injector that includes a prefilled syringe. The syringe includes a fluid chamber that contains a medicament. The syringe also has an injection-assisting needle, and a plunger is movable within the fluid chamber. A housing is configured for allowing insertion of the needle to a penetration depth. An energy source is configured for biasing the plunger to produce an injecting pressure in the medicament in the fluid chamber of between about 80 and 1000 p.s.i. to jet inject the medicament from the fluid chamber through the needle to an injection site.

Drugs covered by this patent

Patent Metadata

Patent number
US8021335
Jurisdiction
US
Classification
Formulation
Expires
2026-10-04
Drug substance claim
No
Drug product claim
Yes
Assignee
Antares Pharma Inc
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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