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Humidified Gas Delivery System

A delivery system, a technology for humidifying gas, used in pipeline heating/cooling, other medical devices, pharmaceutical devices, etc.

Inactive Publication Date: 2017-07-14
ARMSTRONG MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, water vapor transported by humidified gas at high relative humidity (e.g. 100% or higher) is more likely to condense and accumulate on the inner wall of the suction duct - a phenomenon known as "rain out". process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] A direct comparative test was carried out under the following conditions: a humidification chamber of a humidified gas delivery system according to the invention and a prior art humidified gas delivery system comprising a Fisher Paykel model MR290 humidification chamber (Fisher Paykel Healthcare, Auckland, New Zealand) in Comparisons were made in direct contrast trials. Both humidified gas delivery systems were in "trachea mode" as the bottom of the heater using a Maquet Servo300 ventilator (Maquet Ltd., Sunderland, UK) as the source of ventilation and a heater humidifier model MR850 (Fisher Paykel Healthcare, Auckland, New Zealand); and the following set parameters and conditions were identical in both systems:

[0117] Tidal volume: 500ml in 21% oxygen;

[0118] Respiratory rate: 18 breaths per minute;

[0119] Ventilation ratio: 1:E1:2;

[0120] Positive end-expiratory pressure (PEEP): 5 cm water column;

[0121] Ambient temperature: 21°C at 30 to 50% humidity; a...

Embodiment 2

[0127] Direct comparative tests were carried out under the following conditions: Humidified gas delivery system according to the present invention and including Fisher Paykel model RT200 (Fisher Paykel Healthcare, Auckland, New Zealand) (Prior Art 1) and Intersurgical model 2026310 (Intersurgical (UK) Limited, Wokingham, UK) (Prior Art 2) A prior art humidified gas delivery system

[0128] The described humidification was tested using a Maquet Servo300 ventilator (Maquet Ltd., Sunderland, UK) as a ventilation source and a heater humidifier model MR850 (Fisher Paykel Healthcare, Auckland, New Zealand) in "tracheal mode" as the bottom of the heater gas delivery system and in which interventions are made to alter the humidification chamber (for example, see figure 1 40) Get the target temperature of the humidified gas at the gas outlet. The following setting parameters and conditions are identical in these systems:

[0129] Tidal volume: 500ml in 21% oxygen;

[0130] Respirato...

Embodiment 3

[0143] Direct comparative tests were carried out under the following conditions: Humidified gas delivery system according to the present invention and including Fisher Paykel model RT200 (Fisher Paykel Healthcare, Auckland, New Zealand) (Prior Art 1) and Intersurgical model 2026310 (Intersurgical (UK) Limited, Wokingham, UK) (Prior Art 2) A prior art humidified gas delivery system

[0144] The described humidification was tested using a Maquet Servo300 ventilator (Maquet Ltd., Sunderland, UK) as a ventilation source and a heater humidifier model MR850 (Fisher Paykel Healthcare, Auckland, New Zealand) in "tracheal mode" as the bottom of the heater Gas delivery systems and in which interventions are made to alter the humidification chamber (for example, see figure 1 40) to suit the range of inlet duct temperatures required for these tests and where interventions were made to ensure that the current supplied to the resistor was interrupted on a 1:1 ratio; typically 5 seconds open...

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Abstract

The present invention relates to a method for delivering humidified gas to a user or patient, for example, for use in, but not limited to, respiratory gas ventilatory support of mechanical ventilation, continuous positive pressure ventilation and bidirectional positive pressure ventilation; the invention includes The steps of: heating the humidified gas from the humidified gas reservoir; delivering the heated humidified gas to the patient; receiving exhaled gas from the patient; heating the exhaled gas; are heated to different temperatures. The present invention also discloses a humidified gas delivery system for delivering humidified gas to a user or patient during mechanical ventilation, CPAP breathing, bidirectional positive pressure ventilation or other modes of respiratory support provided to a user or patient. Patients have discovered its utility as a breathing circuit for breathing gas humidification systems.

Description

technical field [0001] The present invention relates to a method for delivering humidified gas to a user or patient during, for example but not limited to, respiratory gas ventilatory support of mechanical ventilation, continuous positive pressure ventilation and bidirectional positive pressure ventilation. The present invention also relates to a method for delivering humidified gas to a user or patient during respiratory support such as, but not limited to, mechanical ventilation, continuous positive pressure ventilation, bidirectional positive pressure ventilation, or other modes of respiratory support provided to a user or patient. A humidified gas delivery system for use by a user or patient in combination with a breathing circuit of a breathing gas humidification system. [0002] Background of the invention [0003] Breathing gas humidification is a method of heating and humidifying breathing gas for a user or patient, particularly heating and humidification of breathing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M16/00A61M16/10A61M16/08A61M16/16F16L53/34
CPCA61M16/0875A61M16/16A61M2205/3653A61M16/108A61M16/1085A61M16/109A61M16/1095A61M16/167A61M16/0833F16L53/34A61M16/1045
Inventor 麦基·塞伦·多米尼克
Owner ARMSTRONG MEDICAL