A device for the delivery of a mist of a dose of an ophthalmic liquid and a pump suitable for devices for the delivery of a mist of an ophthalmic liquid
The device addresses the challenge of delivering small ophthalmic liquid volumes accurately and sterily by using a pump and valve system with a collapsible container and dual one-way valves, ensuring precise and sterile mist delivery.
WO2026115124A1PCT designated stage Publication Date: 2026-06-04EYE GO AS
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- EYE GO AS
- Filing Date
- 2025-11-28
- Publication Date
- 2026-06-04
AI Technical Summary
Technical Problem
Existing ophthalmic liquid dispensers lack the ability to deliver very small volumes with high accuracy and precision, and maintain sterility in the container, leading to potential contamination and dosage inaccuracies.
Method used
A device with a specially configured pump and valve system that allows for precise delivery of 6 microliter doses, using a collapsible container and a dual one-way valve mechanism to prevent backflow and maintain sterility, combined with a mixing chamber for mist delivery.
Benefits of technology
Ensures accurate and sterile delivery of small ophthalmic liquid doses as a mist, preventing contamination and maintaining dosage precision.
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Smart Images
Figure EP2025084732_04062026_PF_FP_ABST
Abstract
A device (1) for the delivery of a mist of a dose of an ophthalmic liquid, the device (1) comprising a housing (6) with: - a holding chamber (92) having a discharge opening (93), for holding a dose of liquid to be delivered, - a pump (200) for pumping, via a dose supply conduit (235), the dose of the liquid to the holding chamber (92), the pump (200) being connected with a container (30) containing a plurality of the doses, - an air flow conduit (76, 77) for supplying a flow of air to the holding chamber (92) so as to force the dose delivered by the pump (200) to the holding chamber (92) out through the discharge opening (93), the pump (200) comprising: - a first part (210) with a base (213), an elongated tubular structure (214) extending from the base (213) - a second part (225) movable relative to the first part (210) and including a pump stem (238) extending into the pump chamber (216) through the opening (217), in sealing engagement with the seal (218), the pump stem (238) moving relative to the first part (210) inside the pump chamber, the pump stem (238) having a first sealing surface (300) at the free end (130) and the device (1) further comprising a second sealing surface (400), with the first sealing surface (300) being biased against the second sealing surface (400) by the biasing member (150) thereby defining a fluid tight seal (300;400) in the advanced position of the pump stem (238).
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