Novel integrated membrane oxygenator

Abstract

The invention relates to a novel integrated membrane oxygenator which is characterized in that a shell is provided with a horizontally-placed hollow cylindrical main body, the two ends of the main body are buckled with a front cover body and a rear cover body respectively, a blood inlet is formed in the center of the front cover body, a variable temperature cavity mandrel coaxial with the shell main body is arranged in the center of the main body, and a variable temperature membrane is arranged on the outer side of the variable temperature cavity mandrel in a surrounding mode; the outer side of the variable temperature film is sleeved with a sleeve-shaped variable temperature cavity shell, a blood circulation window is formed in the variable temperature cavity shell, and the fiber tube type oxygenation film is arranged around the outer portion of the sleeve-shaped variable temperature cavity shell; the front end of the variable temperature cavity mandrel is provided with a blood inlet which is coaxial with the blood inlet and communicated with the blood inlet, and the variable temperature cavity mandrel is sequentially provided with a two-way shunting part, a spiral pressure reduction part, a blood storage part and a mandrel rear end backwards along the blood inlet at the front end. The oxygenation and temperature changing efficiency is improved.

Description

Technical field: [0001] The invention relates to the technical field of medical device manufacturing, in particular to a novel integrated membrane oxygenator capable of bidirectional decompression and drainage of blood to effectively reduce blood flow pressure in the blood circuit and improve oxygenation and temperature change efficiency. Background technique: [0002] The integrated membrane oxygenator is the core component of extracorporeal circulation (CPB) and extracorporeal membrane oxygenation (ECMO), and it is also the development trend of cardiopulmonary bypass technology in cardiac surgery; its function is to replace the human lung function for blood gas exchange, to achieve Oxygenation of the blood and removal of carbon dioxide changes the blood from venous to arterial. The existing hollow fiber membrane oxygenator is mainly composed of two parts: an oxygenation unit and a temperature exchange unit. In order to ensure the blood gas exchange efficiency, the existing...

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Problems solved by technology

[0005] The blood circuit of the existing integrated oxygenator is mostly arranged vertically. In order to improve the temperature-changing effect, the blood needs to be shunted after being pumped in, so that the pumped blood can fully contact the temperature-changing membrane. In the prior art, the blood dispersion mechanism adopts a conical shunt , the blood enters into the variable temperature chamber through the blood conical dispersing device. The dispersing device is designed with more than 4 dispersing rods, and the blood directly enters the dispersing rod without passing through the silk membrane at the end of the blood inlet. This structure is not conducive to the full use of the temperature changing membrane; A cylindrical sleeve is designed in the middle of the core shaft of the variable temperature chamber of the type oxygenator, and a circular through hole is opened on the side wall of the cylindrical sleeve, which is used to buffer the blood and reduce the pressure of the blood flow, but the temperature change coefficient can only reach 40%.

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