Multi-component delivery systems with internal needle and micro seal assembly

The multi-component delivery system addresses the challenges of leakage and premature mixing by using a micro seal within the applicator hub to establish fluid coupling between component chambers and a needle assembly, ensuring accurate and controlled delivery of multi-component materials.

WO2025072665A1 Publication Date: 2025-04-03CLEASTREAM TECH LTD +1
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Patent Information

Application Number
PCT/US2024/048844
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-28
Filing Date
2024-09-27
Publication Date
2025-04-03

AI Technical Summary

Technical Problem

Existing multi-component delivery systems face challenges in preventing leakage and premature mixing of components, especially when using dual barrel syringes for component delivery and/or removal.

Method used

A system comprising an applicator with two separate component chambers, a needle assembly with an elongate hollow stylet and a needle hub, and a micro seal disposed within the applicator hub. The micro seal establishes fluid coupling between the component chambers and the needle assembly, ensuring separation of components until delivery.

Benefits of technology

The system effectively prevents leakage and premature mixing of components, ensuring accurate and controlled delivery of multi-component materials by maintaining separation until the components reach the distal end of the needle.

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Abstract

A system for mixing and delivering content is disclosed. The system includes an applicator, a needle assembly, and a micro seal. The applicator includes two component chambers separate from one another, each component chamber including at least one output port on a distal end thereof and an applicator hub disposed on a distal end of the applicator adjacent to the at least one output port of each component chamber. The needle assembly includes an elongate hollow stylet having a plurality of lumens therein and a needle hub having an interior cannula fluidly coupled to the elongate hollow stylet. The micro seal is disposed within the applicator hub. The micro seal is configured to receive the interior cannula of the needle hub to establish a fluid coupling between each of the two component chambers with a respective one of the lumens within the elongate hollow stylet.
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