Separated axial flow pump

Abstract

The present ivnention relates to a separated axial flow pump suitable for internal circulation application of infantile operation. Said axial flow pump includes driving device and pump body, said pump body is equipped with inlet end, outlet end, internal magnet and blade wheel. The described inlet end, outlet end, internal magnet and blade wheel. The described inlet end, outlet end and blade wheel of the pump body are positioned on same central axis, and pump body can be separated and axially mounted on the central axis of the driving device, the blade wheel is fixed in the internal magnet, and the interior of driving device is equipped with a transmission device, it includes an external magnet which can be coupled with said internal maget by means of magnetic force to drive blade wheel and make it rotate.

Description

technical field [0001] The invention relates to a medical pump, especially a detachable axial-flow pump suitable for use in extracorporeal circulation in infant surgery. Background technique [0002] With the continuous improvement of surgical techniques and the in-depth development of various researches, the concept that congenital heart disease should be treated as soon as possible to prevent various secondary lesions has gradually formed. The age of patients undergoing surgery continues to decline, and more and more patients are being operated on in infancy or even in the neonatal period. This also puts forward higher requirements for cardiopulmonary bypass technology, requiring more advanced equipment that is more suitable for infant bypass. [0003] General cardiopulmonary bypass equipment is mainly medical pumps and oxygenators. Cardiopulmonary bypass for young infants requires the equipment used to have the following characteristics: 1. Low precharge. The amount of ...

AI Technical Summary

Problems solved by technology

However, due to its own following shortcomings, it is not suitable for application in extracorporeal circulation of newborns and young infants: 1. Poor flexibility, it is generally installed on the base, cannot be moved, requires a long pipeline connection, and has a large amount of prefilling

2. The blood is seriously damaged. Due to its extrusion effect, it not only damages the formed components of the blood to a certain extent, but also causes the extruded pipe wall to produce detached debris, which is brought into the human body through the blood flow. Form embolus, affect perfusion effect

3. There is a certain risk, because it is a closed type pump, once the blood flow is blocked, it will generate high pressure behind the pump, causing the pump tube to collapse, and when the blood supply in front of the pump is insufficient, it will also A large amount of gas is pumped into the body with serious consequences

However, most of the existing blood pumps and their motors are integrated or directly connected with flexible shafts, which not only brings a lot of inconvenience to their one-time use, but also greatly increases the cost of their one-time use.

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