Injector lockout prevention device
AssigneeBiogen MA Inc.
InventorHaiming Wu
Life of this patent
Estimating the term…
Abstract
A device that prevents the accidental activation and lockout of an autoinjector. In illustrative embodiments, a resistance unit is configured to resist deployment of the needle until a critical force is applied by the user to the autoinjector, at which point, the resistance of the resistance unit is overcome. Continuous application of force by the user after the resistance is overcome drives the delivery device to the injection site where the medication is administered.
Claims25
A lockout prevention device to control the injection of a syringe of an autoinjector, the autoinjector having a housing and a needle guard, the lockout prevention device comprising:
- a resistance unit connected to the autoinjector;
- the resistance unit is configured to have a first position, wherein the resistance unit prevents the needle guard from exposing the syringe to an injection site, and a second position, wherein the resistance unit does not prevent the needle guard from exposing the syringe to the injection site;
- and
- wherein an injection force, required to expose the syringe to the injection site, is transmitted by application of a critical force to the autoinjector, which is required to move the resistance unit from the first position to the second position.
An autoinjector device, comprising:
- a housing;
- a delivery device disposed within, and moveable relative to, the housing, wherein the delivery device comprises a syringe;
- an needle guard coupled to the syringe and configured to move the syringe through the housing to an injection site;
- a resistance unit configured to have a first position, wherein the resistance unit prevents the needle guard from exposing the syringe to an injection site, and a second position, wherein the resistance unit does not prevent the needle guard from exposing the syringe to an injection site;
- and
- wherein an injection force, required to expose the syringe to the injection site, is transmitted by application of a deployment force to the autoinjector, which is required to move the resistance unit from the first position to the second position.
Dependencies are inferred from the claim text.