18679896. Auto-injector simplified abstract (Sanofi-Aventis Deutschland GMBH)

Auto-injector

Organization Name

Sanofi-Aventis Deutschland GMBH

Inventor(s)

Matthew Ekman of Cheshire (GB)

Timothy Donald Barrow-williams of St. Albans Herts (GB)

Yannick Hourmand of Haslingfield Cambridge (GB)

Auto-injector - A simplified explanation of the abstract

This abstract first appeared for US patent application 18679896 titled 'Auto-injector

The abstract describes an auto-injector for administering a dose of liquid medicament, which includes a housing containing a syringe with a hollow needle and a stopper, capable of delivering the medicament through an orifice against an injection site.

• The auto-injector features an elongate housing with a syringe that can be slidably arranged within it.
• A spring is activated to push the needle through the orifice, operate the syringe to deliver the medicament, and retract the syringe back into the housing.
• An activator locks the spring in a pressurized state before manual operation, releasing it upon manual operation for injection.

Potential Applications: - Medical facilities for quick and efficient administration of liquid medicament. - Emergency situations where immediate injection is necessary. - Home use for self-administration of medication.

Problems Solved: - Provides a convenient and easy-to-use method for administering liquid medicament. - Ensures accurate dosing and delivery of medication. - Reduces the risk of needle stick injuries.

Benefits: - Increases efficiency in medication administration. - Improves patient compliance with treatment regimens. - Enhances safety for healthcare providers and patients.

Commercial Applications: Auto-injectors can be used in hospitals, clinics, pharmacies, and by individuals at home for various medical conditions requiring injectable medication.

Questions about the auto-injector: 1. How does the auto-injector ensure accurate dosing of the liquid medicament? - The auto-injector is designed to operate the syringe precisely to deliver the correct dose of medication. 2. What safety features are incorporated into the auto-injector to prevent needle stick injuries? - The auto-injector includes a retractable needle that is safely covered when not in use to minimize the risk of accidental needle sticks.

Original Abstract Submitted

An auto-injector for administering a dose of a liquid medicament includes an elongate housing arranged to contain a syringe with a hollow needle and a stopper for sealing the syringe and displacing the medicament, the housing having a distal end and a proximal end with an orifice intended to be applied against an injection site. The syringe is slidably arranged with respect to the housing. A spring capable of, upon activation: pushing the needle from a covered position inside the housing into an advanced position through the orifice and past the proximal end (P), operating the syringe to supply the dose of medicament (M), and retracting the syringe with the needle into the covered position. After delivering the medicament, an activator arranged to lock the spring in a pressurized state prior to manual operation and capable of, upon manual operation, releasing the spring for injection.