Pulsed-mode nitrogen monoxide gas delivery device

The device simplifies NO delivery by using a bypass circuit with pulsed mode solenoid valves to manage flow rates, addressing complexity and cost issues in existing systems, ensuring precise control for pediatric and adult treatments.

FR3148373B1Active Publication Date: 2025-12-19INOSYSTEMS GMBH
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Patent Information

Application Number
FR2023004471
Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-05-04
Publication Date
2025-12-19
Estimated Expiration
2043-05-04

AI Technical Summary

Technical Problem

Existing NO delivery systems for treating pulmonary arterial hypertension require complex and costly setups due to the need for precise actuators to manage varying flow rates, especially in pediatric patients, leading to increased complexity and cost.

Method used

A device with a main gas circuit and a bypass circuit, utilizing a secondary on/off solenoid valve to deliver NO in pulsed mode, allowing precise control of flow rates through a combination of main and secondary solenoid valves, with a fixed flow device and control means to manage flow rates and concentrations.

Benefits of technology

The device simplifies the NO delivery system, reducing complexity and cost while maintaining precise control over flow rates, suitable for pediatric and adult patients, and effectively treats conditions like pulmonary hypertension and hypoxia.

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Abstract

Title of the Invention: Pulsed-Mode Nitric Oxide Gas Delivery Apparatus. The invention relates to a NO delivery apparatus (1) comprising a main gas circuit (40; 40.1, 40.2) with flow control means (42, 43) including at least one main solenoid valve (42), and a bypass circuit (41) connecting (140, 141) to the main gas circuit (40; 40.1, 40.2) by bypassing the flow control means (42, 43). Secondary flow control means (45, 46) including at least one on / off secondary solenoid valve (45) are arranged on the bypass circuit (41). A fixed-flow device (46) is arranged on the bypass circuit (41). Control means (50) control the secondary solenoid valve (45) in pulsed mode to alternately switch it between open and closed positions so as to produce a NO / N2 mixture in the form of successive gaseous pulses having a pulse time (di) of non-zero duration.Installation for supplying NO (10) to a patient including the device (1). Figure of the abstract: Figure 2.
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