Leak-proof fluid connection system
The anti-leak injection port design with a guide bush and resilient member effectively prevents fluid leakage during withdrawal, enhancing fluid transfer efficiency and reducing waste in fluid connection systems.
WO2026142773A1PCT designated stage Publication Date: 2026-07-02CAREFUSION 303 INC
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- CAREFUSION 303 INC
- Filing Date
- 2025-10-14
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
Existing fluid connection systems, such as those with needle-free connectors, suffer from fluid leakage when the syringe or fluid delivery device is withdrawn, leading to unnecessary cleanup, wasted medication, and premature replacement of IV cannulas.
Method used
An anti-leak injection port design featuring a guide bush and a resilient member within a housing, where the guide bush is advanced by the fluid delivery device to compress the resilient member, allowing fluid flow when engaged and sealing off when withdrawn, using a guide bush with keys and slots to maintain orientation and prevent leakage.
Benefits of technology
Prevents fluid leakage upon withdrawal of the fluid delivery device, ensuring efficient fluid transfer and reducing waste and cleanup time.
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Smart Images
Figure US2025050835_02072026_PF_FP_ABST
Abstract
A needleless fluid delivery device can be coupled to a valve to deliver fluid to a patient. When the device is withdrawn from the valve, the fluid inside the valve can leak out of the valve. This problem can be addressed with an anti-leak valve. The anti-leak valve can include a housing having a reception lumen and a delivery lumen that is transverse to the reception lumen. A guide bush is positioned in the reception lumen, and a silicon tube bears outwardly against the delivery lumen. When the device is inserted into the reception lumen, the device displaces the guide bush and compresses the silicon tube. This compression fluidly connects a hole in the guide bush to the delivery lumen, which facilitates delivery of the fluid. When the device is removed, the silicon tube seals the delivery lumen and restricts fluid from leaking out of the valve.
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