Suction valve for an endoscope

The suction valve assembly for endoscopes addresses leakage issues in existing designs by using a sliding shaft and flap seal mechanism, ensuring reliable suction control and force while enabling cost-effective single-use production.

WO2025122492A1 Publication Date: 2025-06-12BOSTON SCIENTIFIC SCIMED INC
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Patent Information

Application Number
PCT/US2024/058255
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-12-06
Filing Date
2024-12-03
Publication Date
2025-06-12

AI Technical Summary

Technical Problem

Existing suction valves for endoscopes suffer from leakage issues due to close-fit valve stems and valve wells, leading to incomplete suction blockage and reduced suction force, which is particularly problematic for single-use valves that cannot afford the precision and materials required for reliable operation.

Method used

A suction valve assembly featuring a valve body with a central channel, a flap seal, and a sliding shaft that moves between upper and lower positions to control fluid flow, allowing for precise sealing and suction control without the need for expensive, precise manufacturing.

Benefits of technology

The suction valve assembly effectively mitigates leakage issues by ensuring complete blockage of suction when required, maintaining a strong suction force, and allowing for cost-effective, single-use manufacturing without compromising performance.

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Abstract

Devices, systems, and methods for a suction valve assembly for a medical device. The suction valve (300) assembly includes a valve body (320), a sliding shaft (310), and a flap seal (340). The valve body has a central channel (322) extending vertically between vent openings (324) in the top and a working opening (326) in the bottom and a side opening (328) extending from the central channel to the side surface. The sliding shaft moves within the central channel between an upper position where its upper channels are adjacent the vent openings, and a lower position where it extends into the working opening and unseats the flap seal.
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