SYSTEM AND METHOD OF CONDITIONING RESPIRATORY GASES
First Claim
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1. ) A respiratory gas conditioning system comprising:
- an inhale branch (IB) and an exhale branch (EB);
a heat and moisture exchanger (HME); and
connector (70) for connecting said branches (IB, EB) to a patient (PZ);
whereinsaid HME is located close to a ventilator; and
a water reservoir (RS) is located upstream from said HME to moisture-enrich the gas exhaled by the patient (PZ) as it flows along said exhale branch (EB).
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Abstract
A respiratory gas conditioning system and method are provided and includes an inhale branch (IB), an exhale branch (EB), a low-dead-space heat and moisture exchanger (HME), and a connector (70) for connecting the branches (IB, EB) to a patient (PZ) wherein the HME is located close to a ventilator; and a water reservoir (RS) is located upstream from the HME to moisture-enrich the gas exhaled by the patient (PZ) as it flows along the exhale branch (EB).
56 Citations
10 Claims
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1. ) A respiratory gas conditioning system comprising:
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an inhale branch (IB) and an exhale branch (EB); a heat and moisture exchanger (HME); and connector (70) for connecting said branches (IB, EB) to a patient (PZ);
whereinsaid HME is located close to a ventilator; and
a water reservoir (RS) is located upstream from said HME to moisture-enrich the gas exhaled by the patient (PZ) as it flows along said exhale branch (EB). - View Dependent Claims (2, 3, 4, 5)
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6. ) A method of conditioning respiratory gases, the method comprising the following steps:
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exhaling moisture-saturated gas by a patient heating the moisture-saturated gas to a higher temperature as it flows along a temperature-regulated exhale branch so as to be enriched with moisture as it flows over the surface of water inside a reservoir; and heating the exhaled gas again, so that it is heated and humidified by the time it reaches a heat and moisture exchanger (HME) located close to ventilation means; and
the heat and moisture gradient in the HME assists release of heat and moisture to the gas inhaled by the patient along a temperature-regulated inhale branch. - View Dependent Claims (7, 8, 9, 10)
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Specification