Apparatus and method for targeted delivery of substances

A handheld device for applying bioadhesive bubbles addresses the challenges of treating retinal and ocular discontinuities by enabling precise and complete sealing with controlled application, reducing complications and improving visual outcomes.

JP2026086499APending Publication Date: 2026-05-26SANULUS MEDICAL LLC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
SANULUS MEDICAL LLC
Filing Date
2026-01-29
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing methods for treating retinal and ocular discontinuities, such as macular holes and retinal detachments, suffer from complications like vision loss, scarring, increased intraocular pressure, and difficulty in applying bioadhesives due to gravity and irregular tissue shapes, leading to incomplete sealing and adverse reactions.

Method used

The development of an apparatus and method for applying bioadhesive substances in the form of bubbles or thin films using a handheld device with a cannula and controlled fluid passage, allowing precise application to retinal and ocular tissues, including retinal tears and detachments, by forming and releasing bioadhesive bubbles at controlled times.

Benefits of technology

Enables accurate and complete sealing of retinal and ocular discontinuities with reduced complications, improving patient comfort and visual outcomes by ensuring full coverage and adherence to irregular tissue surfaces.

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Abstract

The present invention provides a device for applying bubbles of a substance to a tissue surface. [Solution] A device comprising a cannula, a distal tip located at the distal end of the cannula having a bubble-supporting surface and an outlet port extending through the bubble-supporting surface, an expansion fluid passage extending through the cannula to the outlet port, a source of expansion fluid, and an actuator for the same. In some configurations, the distal tip can be configured to support a layer of the material on top of the distal port, and the device can be configured such that at least one bubble of the material is formed at the distal tip by the advancement of the expansion fluid from the fluid source through the outlet port, and at least a portion of the bubble can be moved to the tissue surface to treat a defect on the tissue surface.
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