Catheter for Portable Lung Assist Device
a portable, lung assist technology, applied in the direction of catheters, guide wires, surgery, etc., can solve the problems of affecting the patient's breathing, and changing the direction of oxygenated blood flow, so as to reduce or eliminate the recirculation of blood.
Inactive Publication Date: 2017-02-09
RGT UNIV OF CALIFORNIA
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Benefits of technology
The present invention is about a special catheter that has two separate channels for blood to flow through. One channel drains the right ventricle and the other channel returns blood into the pulmonary artery. This catheter prevents blood from flowing in a loop back to itself, which can help to lower blood pressure and actively decompress the right ventricle.
Problems solved by technology
The disadvantages of dual cannulation sites include patient immobility, risks of vascular injury, risks of infection, etc.
Additionally, changes in the position of the patient's neck can lead to changes in the direction of oxygenated blood flow and may exacerbate recirculation.
A filled right ventricle that is not actively drained ejects unoxygenated blood into the pulmonary artery and decreases the efficiency of veno-venous ECMO.
However, the current art does not actively and specifically drain the right ventricle.
Active drainage of the right ventricle to allow remodeling and recovery is of critical importance in the setting of right ventricular failure, and may not be possible by the current art.
Method used
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[0021]It is to be understood that the figures and descriptions of the present invention have been simplified to illustrate elements that are relevant for a clear understanding of the present invention, while eliminating, for the purpose of clarity, many other elements found in the field of catheters for use with ECMO and other lung assist devices. Those of ordinary skill in the art may recognize that other elements and / or steps are desirable and / or required in implementing the present invention. However, because such elements and steps are well known in the art, and because they do not facilitate a better understanding of the present invention, a discussion of such elements and steps is not provided herein. The disclosure herein is directed to all such variations and modifications to such elements and methods known to those skilled in the art.
Definitions
[0022]Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one ...
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The present invention relates to a catheter that minimizes or eliminates the recirculation of oxygenated blood. The catheter of the present invention can be used to drain blood from multiple points in the patient, namely the superior vena cava, right atrium, and the right ventricle, while returning blood to the patient's pulmonary artery. Further, the catheter of the present invention is less likely to be moved or dislodged than catheters currently available in the art, thus making the catheter particularly useful for portable lung assist devices. The present invention also relates to methods for inserting the catheter into the patient and using the catheter with a lung assist device.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application a continuation-in-part of International Patent Application No. PCT / US15 / 27334, filed Apr. 23, 2015, which is entitled to priority under 35 U.S.C. §119(e) to U.S. Provisional Patent Application No. 61 / 983,804, filed Apr. 24, 2014, No. 62 / 050,507, filed Sep. 15, 2014, and No. 62 / 092,387, filed Dec. 16, 2014, the contents of which are each incorporated by reference herein in their entirety. This application is also entitled to priority to U.S. Provisional Patent Application No. 62 / 322,293, filed Apr. 14, 2016, which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION[0002]Lung diseases are the third largest cause of mortality in the U.S., with more than 350,000 deaths annually attributed to lung disease. A wide range of disease processes culminate in end-stage lung disease, including adult respiratory distress syndrome (ARDS), chronic obstructive pulmonary disease (COPD), interstitial lung disease...
Claims
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IPC IPC(8): A61M25/00A61M1/12A61M25/09A61M1/16A61B34/20
CPCA61M25/003A61M1/1698A61B34/20A61M25/09A61M25/005A61M2025/0002A61M2210/125A61B2034/2063A61B2034/2051A61M2025/0031A61M1/122A61M1/3666A61M1/3659A61M25/0041A61M60/113A61M60/38
Inventor ARDEHALI, ABBAS
Owner RGT UNIV OF CALIFORNIA