Breathable multi-dose eye drop delivery system

The device addresses inaccuracies in existing eye drop delivery by providing precise micro-doses with controlled jet velocities and ventilation, ensuring accurate delivery and preventing microbial contamination, thus improving the efficiency and safety of ophthalmic drug administration.

KR102999646B1Active Publication Date: 2026-08-05BAUSCH & LOMB IRELAND LIMITED
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Patent Information

Application Number
KR1020227024834
Authority / Receiving Office
KR · KR
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-07-08
Filing Date
2020-12-18
Publication Date
2026-08-05
Estimated Expiration
2040-12-18

AI Technical Summary

Technical Problem

Current methods for delivering pharmaceutical fluids to the eye, such as droplet bottles, suffer from inaccuracies in dosing, large droplet sizes that exceed tear film absorption, and issues with fluid being wiped off due to blinking, leading to inefficiencies and potential microbial contamination.

Method used

A device that delivers precise micro-doses of fluid using optical aiming, controlled jet velocities and apertures, and incorporates a ventilation system with a 0.2 µm filter to prevent microbial entry, utilizing electromagnetic transducers or coin vibration motors to discharge fluid accurately and quickly, with a vibrating membrane to maintain pressure balance.

Benefits of technology

Ensures accurate delivery of micro-doses to the cornea within a blink time, prevents microbial contamination, and maintains fluid absorption by the tear film, enhancing patient convenience and safety.

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Abstract

A device for delivering a precise amount of pharmaceutical fluid to the eye is provided. The device includes an ampoule for storing the liquid and an aperture through which the liquid is released. The device further includes a vibrating membrane comprising a needle protruding from the membrane and extending to the aperture to form a needle valve. The needle valve provides a hermetic closure of the aperture to enable preservative-free storage of the pharmaceutical fluid in the device. The system further includes an electromagnetic transducer to move the membrane back and forth to release the liquid through a nozzle. Finally, the system further includes a vent to allow air to enter the ampoule when the fluid is discharged from the ampoule. Preferably, this vent includes a filter to prevent the entry of microorganisms or other contaminants into the ampoule.
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