Resumen
PROBLEM TO BE SOLVED: To avoid an blood detention area and to decrease pathological changes by using a vacuum as a energy source, installing an out working stenosizers in an entrance nozzle and an exit nozzle, and controlling all function by a console. SOLUTION: A vacuum connection element 8 is connected to a sealed space positioned between a membrane 4 and a rigid chamber 3 equipped with a command console. While the pump is full, the command console closes the exit stenosizer order 2, and at the same time blood is sucked through the vacuum connection element 8, so the membrane 4 is expanded. Then, at the time of a command of opening the entrance 1 is sent, the vacuum connection element 8 is connected to atmosphere. By this way, it is released from the vacuum condition that exerts during the filling in, blood is propelled by elastic recuperation of the membrane 4 through the exit nozzle 7.
Reivindicaciones
1. Tubular shaped blood pump device with active valves, characterised by using vacuum as the main source of energy, in which the classical mechanical valves are substituted by two active external tube stenosizers situated in the entrance and exit nozzles and which are actuated by a console which commands all their functions. 2. Blood pump device, according to the first claim, characterized by using a tubular elastic membrane which is found on the inside of a rigid chamber connected to a command console. 3. Blood pump device, according to the previous claims, characterized in that the blood intake is obtained by dilatation of the tubular elastic membrane on introduction of vacuum and the propulsion by elastic recuperation of the membrane when the chamber is connected to the atmosphere. 4. Blood pump device, according to the above claims, characterized in that the blood flow direction is obtained by using two stenosizers of active external tube, also called pincer valves, one applied to the entrance nozzle and the other one to the exit nozzle and the function of which is actuated by the command console. 5. Blood pump device, according to the previous claim, characterized in that the tube strenosizers used, may be pneumatic, electric, electromagnetic or mechanical, depending on the use of the device in a specific application. 6. Blood pump device, according to the above claims, characterized by possessing a command console which supplies the necessary energy, commands connection and disconnection of vacuum, commands opening and closure of stenosizers in precise moments of the cycle, as well as the other pump functions. 7. Blood pump device, according to the above claims, characterized by being able to be used as a pump unit in hemodialysis, haemofiltration and apheresis systems. 8. Blood pump device, according to claims one to six, characterized by being able to be used as a pump unit in oxygenation systems by extracorporal membrane. 9. Blood pump device, according to claims one to six, characterized by being able to be used as a pump in extracorporeal circulation systems. 10. Blood pump device, according to claims one to six, characterized by being able to be used as an artificial ventricle in systems of mechanical circulatory assistance. 11. Blood pump device, according to claims one to six, characterized by being able to be used in all those systems used in medicine which require a pump which produces little hemolysis and a low production of additional plaques and clots.
