Venous cannula with balloon

Abstract

The invention discloses a venous cannula with a balloon, which comprises a cannula (1), a balloon (2), a catheter (3) and a one-way valve (4), a cavity (11) is arranged in the cannula (1), the balloon (2) is arranged outside the rear part of a front end plug (12) of the cannula (1), the balloon (2) is connected with the one-way valve (4) through the catheter (3), the venous cannula is characterized in that a plurality of side holes (13) are arranged on the wall of the cannula (1) behind the balloon (2), and the side holes (13) are communicated with the cavity (11). After the balloon blocks the inferior vena cava, blood flow in the inferior vena cava can be fully recovered; meanwhile, due to the existence of the balloon, the venous cannula is in a suspended state in the inferior vena cava, and the telecentric section of the inferior vena cava is expanded, so that the venous cannula is prevented from adhering to the wall, blocking the side holes and affecting blood flow recovery; and the balloon blocks the inferior vena cava, so that the recirculation problem of VV-ECMO is effectively avoided, and the oxygenation efficiency is improved.

Description

technical field [0001] The invention relates to a venous cannula with a balloon, which can be used for extracorporeal circulation or extracorporeal membrane oxygenation ECMO. Background technique [0002] Extracorporeal Membrane Oxygenation (ECMO) is mainly used to provide continuous extracorporeal breathing and circulation for patients with severe cardiopulmonary failure to maintain the life of the patient. The core part of Extracorporeal Membrane Oxygenation (ECMO) is the membrane lung (artificial Lung) and blood pump (artificial heart), can provide long-term cardiopulmonary support for patients with severe cardiopulmonary failure, and win precious time for critically ill rescue. ECMO mainly includes intravascular intubation, connecting tube, power pump (artificial heart), oxygenator (artificial lung), oxygen supply tube, monitoring system and other parts. There are 2 types of ECMO, including: [0003] One: VV-ECMO: (venous-venous) drains hypoxic blood from a large vein,...

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a venous cannula with a balloon, which solves the venous cannulation of extracorporeal membrane oxygenation ECMO in the prior art. The problem of recirculation during the operation seriously affects oxygenation and the collapse of the inferior vena cava. The cannula is easy to adhere to the wall, and it is unable to recover enough venous blood, resulting in insufficient flow.

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