Leukocyte-depleted warm blood cardioplegic solution perfusion device

Abstract

The invention discloses leukocyte-depleted warm blood cardioplegic solution perfusion device, which is mainly used for the perfusion of a cardioplegic solution to the heart during open heart surgery under cardiopulmonary bypass and is also used for the perfusion of a tissue and organ protection solution. A perfusion bag is made from four layers of thin films, wherein by virtue of the four layers of the thin films, the perfusion bag is divided into a temperature regulating cavity, a medicine liquid cavity and a pressurizing cavity from left to right; a temperature regulating liquid injection tube for injecting temperature regulating liquid is arranged on the upper part of the temperature regulating cavity, and a temperature regulating liquid drainage tube for draining the temperature regulating liquid is arranged on the lower part of the temperature regulating cavity; a medicine liquid injection tube which is communicated with the medicine liquid cavity is arranged on the upper part of the medicine liquid cavity; a pressurizing and inflating tube which is communicated with the pressurizing cavity is arranged on the lower part of the pressurizing cavity; and a perfusion tube which is communicated with the medicine liquid cavity is arranged on the lower part of the medicine liquid cavity. The cardioplegic solution perfusion device disclosed by the invention has the beneficial effects that the heat of the cardioplegic solution can be preserved or increased at any time; and when the cardioplegic solution is inflated and pressurized, the perfusion device can be used for preventing air from entering the cardioplegic solution and for removing residual liquid in the perfusion bag to the greatest extent.

Description

Technical field [0001] The invention relates to a medical surgical auxiliary instrument, in particular to a leukocyte-removed warm-blooded cardioplegia perfusion device. It is mainly used to perfuse the heart with cardioplegia during open heart cardiopulmonary bypass surgery, and can also be used for tissue Organ perfusion protection solution. Background technique [0002] When performing operations such as cardiac aortic valve replacement and ascending aortic replacement, the surgery needs to be performed outside the body and the heart is stopped. At this time, the heart has no blood supply, and it is necessary to infuse cardioplegic fluid into the coronary arteries, the nutrient vessel of the heart. It is necessary to infuse cardioplegic fluid once every 20-30 minutes during cardiac arrest, for 6-8 minutes each time. The dosage is 15-20ml / kg. The prior art is to use a cardioplegic fluid perfusion device to inject low-temperature crystallographic cardioplegia or blood-containi...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is easy to mix air into the cardioplegia if the operation is improper. When the cardioplegia with air bubbles is injected into the heart, it is easy to form an air embolism, resulting in postoperative complications, causing the patient to have difficulty breathing, coughing, and chest pain. Tension, wheezing and cyanosis, etc., severe cases may cause sudden death

At the same time, bacteria in the air will also pollute the cardioplegic fluid, increasing the risk of surgery

Another disadvantage of the above method is that there is no heat preservation or heating device on the infusion bag, and the temperature of the cardioplegic fluid in the infusion bag will gradually decrease with the prolongation of the operation time. When the temperature is lower than 30°C, the fluidity of the cardioplegia fluid will be significantly The oxygen-carrying capacity will also decrease, which will greatly affect the success rate of the operation

Another disadvantage of the above method is that when the existing infusion bag is used to add cardioplegia fluid for perfusion, because the fluidity of the cardioplegia fluid is poor, there will always be some cardioplegia remaining in the infusion bag that cannot be discharged, which is a waste of time. Not environmentally friendly

Images