SU532378A1 - Artificial heart - Google Patents

Description

(54) ARTIFICIAL HEART

one

This invention relates to the field of cardiac and experimental surgery.

An artificial heart is known, consisting of 4 bagged-type chambers, ball valves, hydraulic actuator pipes with an electromagnet. However, it does not sufficiently approximate the parameters of a unidirectional pulsating blood flow to the natural,

In order to approximate the parameters of unidirectional pulsating blood flow to the natural one, a four-section rotor is installed in the case, in the section of which elastic chambers are placed and communicated with the inlet and outlet nozzles by means of a flat spool, and the rotor sections are connected with an air actuator using another flat spool.

In addition, the rotor is equipped with a pneumatic torque engine, and the openings of the spools are arranged in pairs in different radial coordinates.

The drawing shows the proposed artificial heart, in the cuts.

The artificial heart contains

pus 1, pneumatic actuator 2, rotor 3, in section

4 Which are placed elastic chambers

5 and using a flat slide valve communicated with inlet and outlet connections 6-9. Section 4 of the rotor 3 with the help of another flat spool communicated with the pneumatic actuator 2, the rotor 3, equipped with a pneumatic torque engine 10, the holes of the spools are arranged in pairs in different coordinates. The artificial heart also contains the trunk 11 of the cavity 12, 13, the blade 14, the axis 15, the holes 16, 17, the tongue 18, the tongue 19 and the springs 20.

The proposed design of the artificial heart implements the principle of using individual elastic elements for suction and injection, which allowed refusing the use of valves in the performance of the pumping function.

Claims (3)

At the position indicated in the drawing, blood is drawn from the right atrium through the nozzle 7 and short-circuit left through the nozzle 6 into the corresponding chambers. At the same time, blood is pumped into the pulmonary artery and the aorta through the pipes 8, 9. After the completion of this part of the cycle, the compressed gas through line 11 serves to the cavity 12 of the pneumatic torque engine 10, rotates the blade 14 by 180, and displaces the gas from the cavity 13. Since the rotary blade 15 is rigidly connected to the rotor 3, then when it rotates the position of chambers 5 is reversed, while the chamber that was previously in the venous position (i.e., connected to the right or left atria) is in the arterial position (i.e., connected to the pulmonary artery or aorta). In the extreme positions of the rotor, the orifices located at its ends coincide: from the vertex 16 of the lower end, with the shtutserami for blood flow, and the upper end openings 17 with the channels for supplying compressed or rarefied gas coming from the pneumatic actuator 2 through washer 18. To seal blood and gas, the inner end plane of body 1, as well as the contacting planes of rotor 3 and washers 18, are made with a high degree of roughness and accuracy. To create a constant sealing specific pressure, the washer 18 is axially made floating by means of pins 19 and springs 20. Claim 1. Artificial heart including body, elastic chambers, inlet and outlet nozzles, pneumatic actuator, characterized in that in order to approximate the parameters of the unidirectional pulsating blood flow to the natural flow, a four-section rotor is installed in the housing, in the section of which elastic chambers are placed and communicated with the flat spool with the inlet and outlet nozzles The rotor sections, with the help of another flat slide valve, are in communication with a pneumatic actuator. 2. Artificial heart in p. 1, characterized in that the rotor is equipped with a pneumatic torque engine. 3. Artificial heart according to claim 1, characterized in that the holes of the spools are arranged in pairs in different radial coordinates. sixteen 20 19 B- B