Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-12274864-B2
Publication Date
2025-04-15
Expiration Date
Abstract
An injector comprising an outer housing, a generally longitudinally extending keyway formed in the outer housing, an inner housing located interiorly of the outer housing, a guide member mounted at one end of the inner housing, the guide member having at least one protrusion adapted to engage the keyway, a spring member, the spring member having a first end abutting the outer housing, a second end of the spring member abutting the guide member, a syringe mounted interiorly of the inner housing, a needle mounted on one end of the syringe, the syringe having a plunger and a plunger rod, a finger rest member mounted over the outer housing, the finger rest member being opaque to thereby prevent visual access to the keyway.
Core Innovation
The invention relates to an injector having an outer housing with a generally longitudinally extending keyway formed in the outer housing. The keyway comprises an elongated top portion above an enlarged lower portion with an adjacent side portion. An inner housing is located interiorly of the outer housing, and a guide member mounted at one end of the inner housing has at least one protrusion adapted to engage the keyway.
A spring member is provided with a first end abutting the outer housing and a second end abutting the guide member. A syringe is mounted interiorly of the inner housing, and a needle is mounted on one end of the syringe. The syringe has a plunger and a plunger rod, and the injector includes a finger rest member mounted over the outer housing, with the finger rest member being opaque to thereby prevent visual access to the keyway.
The at least one protrusion is configured to engage the adjacent side portion of the keyway prior to use. The protrusion engages the top portion of the keyway if the inner housing is pushed, and then engages the enlarged lower portion of the keyway if the inner housing is pushed and then released. The enlarged lower portion further comprises a somewhat horizontal wall such that when the at least one protrusion engages the enlarged lower portion, the protrusion is blocked from moving out of the enlarged lower portion.
Claims Coverage
Independent claim clm-00001 defines an injector with four inventive features: a spring-biased guide member protrusion engaging a specific keyway geometry in different positions, an opaque finger rest member, a syringe and needle assembly inside an inner housing, and a blocking enlarged lower portion.
Keyway-guided inner housing with protrusion engagement zones
An outer housing with a generally longitudinally extending keyway having an elongated top portion above an enlarged lower portion with an adjacent side portion, and an inner housing with a guide member having at least one protrusion adapted to engage the keyway; the protrusion engages the adjacent side portion prior to use, engages the top portion if the inner housing is pushed, and engages the enlarged lower portion if the inner housing is pushed and then released.
Spring member biases the guide member/protrusion
A spring member having a first end abutting the outer housing and a second end abutting the guide member.
Opaque finger rest member prevents visual access to the keyway
A finger rest member mounted over the outer housing, the finger rest member being opaque to thereby prevent visual access to the keyway.
Enlarged lower portion blocks protrusion movement out of the locked region
The enlarged lower portion comprises a somewhat horizontal wall such that when the at least one protrusion engages the enlarged lower portion, the at least one protrusion is blocked from moving out of the enlarged lower portion.
The claim coverage centers on a spring-biased guide member protrusion that engages different portions of a specifically shaped keyway and is blocked from moving out of the enlarged lower portion, together with an opaque finger rest member that prevents visual access to the keyway.
Stated Advantages
Deter tampering.
Prevent detachment of the plunger rod.
Provide a post-use/tamper visible signal.
Reduce cross-contamination risk.
Documented Applications
Supports various injection types including intramuscular, sub-cutaneous, intravenous, and intradermal.
Interested in licensing this patent?