Dual chamber gas exchanger and method of use for respiratory support

A technology for scavenging gas and oxygenating gas, used in suction devices, pharmaceutical devices, other medical devices, etc., to solve problems such as lack of oxygen delivery and precise control of carbon dioxide removal

Active Publication Date: 2020-04-17
马里兰大学巴尔的摩 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current oxygenators have limited adjustability and therefore lac

Method used

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  • Dual chamber gas exchanger and method of use for respiratory support
  • Dual chamber gas exchanger and method of use for respiratory support
  • Dual chamber gas exchanger and method of use for respiratory support

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Embodiment Construction

[0065] see Figure 1-22 , the dual-chamber gas exchanger 100 is configured to employ two separate oxygen supply gases (eg, ventilation) to allow the dual-chamber gas exchanger 100 to be used in various clinical applications. For example, the dual chamber gas exchanger 100 employs separate flow paths in a single chamber of a dual gas flow chamber 124 (such as the first chamber 110 and the second chamber 113) to deliver oxygen to the blood and remove carbon dioxide from the blood. remove. The dual-chamber gas exchanger 100 of the present embodiment comprises an outer housing 112, a blood distributor 114, an outer fiber bundle 116 made of a hollow membrane, a middle housing 118, an inner fiber bundle 120 made of a hollow membrane, an inner bias flow device 122 and dual gas flow chamber 124. The dual chamber gas exchanger 100 can be used in a variety of clinical situations; such as performing cardiopulmonary bypass surgery during cardiothoracic surgery, performing extracorporeal...

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PUM

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Abstract

The device of the present invention includes a dual chamber gas exchanger that is configured for increased flexibility and scalability for many clinical applications. The dual chamber oxygenator can be configured and used in various applications, such as in a heart-lung machine for cardiopulmonary support during cardiothoracic surgery, in an extracorporeal membrane oxygenation (ECMO) circuitry, asa respiratory assist device for patients with lung failure, and the like. The dual chamber gas exchanger features two sweep gas flow paths and two gas exchange membrane bundles enclosed in a housingstructure with various blood flow distribution and gas distribution mechanisms. The gas exchanger includes an outer housing, an intermediate housing, two gas exchange fiber bundles, a blood inlet, a blood outlet, two gas inlets, two gas outlets, two gas distribution chambers and an optional heat exchanger.

Description

[0001] Statement of Government Interest [0002] This invention was made with Government support under Grant No. HL118372 awarded by the National Institutes of Health. The government has certain rights in this invention. [0003] Related Applications and Cross-References [0004] This application claims the benefit of Provisional Patent Application Serial No. 62 / 545,512, filed August 15, 2017. Its entire content is hereby incorporated by reference. technical field [0005] The present invention generally relates to medical devices and methods. In particular the invention relates to methods for extracorporeal membrane oxygenation, respiratory support and cardiopulmonary support. Background technique [0006] Oxygenation of blood using artificial devices began in the 1930s. Early blood oxygenators, such as membrane blood oxygenators and bubble oxygenators, were based on direct exposure of blood to oxygen or air. Direct contact of blood with oxygen is an effective mean...

Claims

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Application Information

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IPC IPC(8): A61M1/00A61M1/14
CPCA61M1/1698A61M2202/0225A61M2206/20A61M1/3623A61M1/1629A61M1/3607A61M60/113
Inventor 吴忠俊巴特利·P·格里菲思张嘉锋S·J·奥维格
Owner 马里兰大学巴尔的摩
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