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Gas exchange

A technology of gas exchange and predetermined pressure, which is applied in the direction of suction equipment, dialysis system, etc., and can solve problems such as limitations

Inactive Publication Date: 2006-07-05
爱可森艺术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of expensive gases has been limited in the past due to the economic disadvantage of the gas being vented into the atmosphere

Method used

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Embodiment Construction

[0052] refer to figure 1 , showing a known oxygenator identified by the numeral 1. A gas mixture 4 containing oxygen (usually a mixture of nitrogen and oxygen) is passed along the gas side 2 of the membrane 25 , while the patient's blood 22 is pumped to the opposite side 3 of the membrane 25 . Oxygen diffuses through the membrane into the blood, while waste carbon dioxide diffuses from the blood through the membrane into the gas mixture 4 . Carbon dioxide is then entrained in gas stream 4 and exhausted to the atmosphere.

[0053] refer to figure 2 , where used with figure 1 Like numerals are used to designate like parts, and in this figure there is shown an apparatus, identified by numeral 20, according to the first aspect of the invention.

[0054] The gas passing along the gas face 2 of the oxygenator membrane 25 is sent to the hollow pipe 21 for circulation. In the conventional mode, the patient's blood 22 passes along the other side of the oxygenator membrane 25 . A...

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Abstract

A method and apparatus (20) for maintaining a gas in a predetermined pressure range during a gas exchange process. The apparatus (20) includes a first conduit (21) having a gaspermeable membrane wall portion (25), atleast one inlet port (26) for introdusing a first gas into the apparatus, and a reservoir (28) arranged to contain the first gas. The method and apparatus are particularly suitable for oxigenating an extracorporeal flow of blood.

Description

technical field [0001] The present invention relates to a method of maintaining a gas within a predetermined pressure range during gas exchange, and an apparatus for carrying out the method of maintaining a gas within a predetermined pressure range during gas exchange. In particular, the invention relates to maintaining a gas, such as oxygen, within a predetermined pressure range during oxygenation of blood. The invention also relates to recirculating flow of gas around a conduit containing a membrane while maintaining gas flow through the membrane within a predetermined pressure range. Background technique [0002] When performing heart surgery, one of the commonly used techniques is to stop the heart and use a mechanical device to pump blood through the body of an unconscious patient and also add oxygen and remove carbon dioxide from the blood flowing from the patient. The machine used to perform this procedure is called a heart-lung bypass machine. Once the procedure is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/16A61M1/14
CPCA61M1/1698
Inventor J·丁利
Owner 爱可森艺术有限公司