Fluid chip and cell encapsulation system

The fluid tip with non-coaxial inlets and three-dimensional channels addresses the instability of coaxial jets in fluid chips, achieving stable flow symmetry and reduced pressure drops, facilitating high-throughput cell encapsulation systems.

JP2026520257APending Publication Date: 2026-06-23TREEFROG THERAPEUTICS

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
TREEFROG THERAPEUTICS
Filing Date
2024-04-19
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing fluid chips face challenges in producing stable coaxial jets, particularly in air, due to limitations in manufacturing techniques that result in unstable flow dynamics and high pressure drops, especially when dealing with viscous fluids, and require complex mounting steps for coaxial capillaries.

Method used

A fluid tip design with a main inlet and non-coaxial secondary inlets, featuring three-dimensional channels that merge into a circular injection duct, ensuring homogeneous flow distribution and stability by implementing secondary channels with equal hydraulic resistance, allowing for compact dimensions along the Z-axis without coaxial inflow injection.

Benefits of technology

The design stabilizes coaxial jets, enhances flow symmetry, and reduces pressure drops, enabling high-throughput cell encapsulation systems with improved stability and efficiency, particularly suitable for viscous fluids and three-dimensional culture systems.

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Abstract

The present invention relates to a fluid tip (1) comprising a body (2), a main inlet (5), and at least one secondary inlet (6) not coaxial with the main inlet (5), wherein each main inlet (5) and secondary inlet (6) is intended to receive a substance and an outlet (7), the main inlet (5) is connected to the outlet (7) by a main channel (8) having a substantially straight portion defining the central axis Z of the fluid tip (1), and the secondary inlet is also connected to the outlet (7) by a secondary channel (9). According to the present invention, the secondary channel (9) is divided into at least two secondary ducts (11) of the same size that merge with the main channel (8) into a circular injection duct that is evenly distributed around the central axis Z.
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