Connecting rod type interventional heart pump

Abstract

The invention relates to the technical field of medical instruments, in particular to a connecting rod type interventional heart pump which comprises a bowl-shaped top shell, a bowl-shaped bottom shell in sealed butt joint with a bowl opening of the bowl-shaped top shell, a second connecting nozzle in sealed communication with the shell wall of the bowl-shaped bottom shell, and a box body and a box cover which are in butt joint with each other. A first box body and a first box cover which are in butt joint with each other and a second box body and a second box cover which are in butt joint with each other are arranged in the box body, a pair of lower positioning notches C and a lower mounting notch are formed in the edge of a box opening of the second box body, and a pair of upper positioning notches C and an upper mounting notch are formed in the edge of a box opening of the second box cover. The upper installation notch and the lower installation notch are in butt joint to form an installation opening, the installation opening is in butt joint with a cylinder sleeve in a sealed mode, the tail end of the cylinder sleeve communicates with a first water pipe in a sealed mode, the tail end of the first water pipe communicates with a second water pipe in a sealed mode, and the tail end of the second water pipe communicates with the second mouthpiece in a sealed mode. The heart pump solves the problems that an existing heart pump is poor in long-term safety, poor in working stability and prone to causing thrombus, and is suitable for ventricle assistance.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a connecting rod type interventional heart pump. Background Art

[0002] A heart pump is a mechanical device that assists the heart in supplying blood to the aorta, and is used for patients with heart failure or waiting for a heart transplant. At present, the heart pumps used in clinical applications mainly include three categories: the first category is an implantable heart pump, the second category is a magnetic levitation external suspension heart pump, and the third category is a pneumatic interventional heart pump. Due to the limitations of their own structures, these three types of heart pumps have the following problems: First, the implantable heart pump needs to be implanted in the body for a long time through an implantation operation, which leads to poor long-term safety. Second, the magnetic levitation external suspension heart pump is limited by magnetic levitation technology and is easily affected by external motion and electromagnetic interference, so its working stability is poor. Third, the pneumatic interventional heart pump is prone to blood cell aggregation during operation due to the insufficient pumping force, which easily leads to thrombosis. Based on this, it is necessary to invent a connecting rod interventional heart pump to solve the problems of poor long-term safety, poor working stability, and easy thrombosis of the existing heart pump. Summary of the invention

[0003] In order to solve the problems of poor long-term safety, poor working stability and easy thrombosis in existing heart pumps, the present invention provides a connecting rod type interventional heart pump.

[0004] The present invention is achieved by adopting the following technical solutions: A connecting rod type interventional heart pump includes a bowl-shaped top shell; The mouth of the bowl-shaped top shell faces downward, and an assembly hole is provided through the shell wall of the bowl-shaped top shell; a bowl-shaped cavity is fixedly embedded in the bowl-shaped top shell; an elastic diaphragm is sealed and embedded in the mouth of the bowl-shaped cavity; a first nozzle is sealed and connected to the cavity wall of the bowl-shaped cavity, and the first nozzle passes through the assembly hole; a catheter is sealed and connected to the first nozzle; an end wall is provided at the tail end of the catheter, and a threading hole is provided through the center of the end wall; a blood inlet and a bleeding port are provided through the side wall of the tail of the catheter, and the distance between the bleeding port and the end wall is greater than the blood inlet The distance between the end wall and the blood inlet is fixedly embedded with a blood inlet check valve; a pivot is fixedly passed through the side wall of the tail of the catheter, and the pivot is located between the blood inlet and the bleeding port; the axis of the pivot is perpendicular to the axis of the catheter, and the middle of the pivot is located in the catheter; the middle of the pivot is rotatably equipped with an arc groove valve plate; the arc groove valve plate can detachably block the catheter on the one hand, and can detachably block the bleeding port on the other hand; the bowl mouth of the bowl-shaped top shell is sealed and connected with the bowl-shaped bottom shell; the shell wall of the bowl-shaped bottom shell is sealed and connected with a second nozzle; It also includes a box body and a box cover that are butt-jointed with each other; A first box body and a first box cover that are butted against each other, and a second box body and a second box cover that are butted against each other are provided in the box body; a pair of lower positioning notches A and a pair of lower positioning notches B are provided at the edge of the box opening of the first box body; a pair of upper positioning notches A and a pair of upper positioning notches B are provided at the edge of the box opening of the first box cover; the pair of upper positioning notches A and the pair of lower positioning notches A are butted against each other to form a pair of positioning holes A; the pair of upper positioning notches B and the pair of lower positioning notches B are butted against each other to form a pair of positioning holes B; a pair of lower positioning notches C and a lower installation notch are provided at the edge of the box opening of the second box body; a pair of upper positioning notches C and an upper installation notch are provided at the edge of the box opening of the second box cover; a pair of upper positioning notches C and a pair of lower positioning notches C are butted against each other to form a pair of positioning holes C; the upper installation notch and the lower installation notch are butted against each other to form an installation opening; The mounting port is sealed and docked with a cylinder sleeve; the tail end of the cylinder sleeve is sealed and connected to a first water pipe, and the first water pipe passes through the side wall of the box body; the tail end of the first water pipe is sealed and connected to a second water pipe, and the tail end of the second water pipe is sealed and connected to the second nozzle; the side wall of the first water pipe is sealed and connected to a bifurcated pipe, and the bifurcated pipe is located outside the box body; a valve is installed on the bifurcated pipe; a piston is slidably assembled in the cylinder sleeve; a crankshaft is arranged in the second box body and the second box cover; the first main journal of the crankshaft rotates and passes through the first positioning hole C; the second main journal of the crankshaft rotates and passes through the second positioning hole C and a pair of positioning holes B; a connecting rod is rotatably assembled between the connecting rod journal of the crankshaft and the piston; a driven gear is fixedly assembled on the side of the second main journal of the crankshaft, and the driven gear is rotatably embedded in the first box body and the first box cover; A driving motor is also provided in the box; the output shaft of the driving motor rotates and passes through a pair of positioning holes A; a driving gear is fixedly mounted on the side of the output shaft of the driving motor, and the driving gear is meshed with the driven gear; A power supply and a controller are also provided in the box; a touch screen is fixed through the box cover; the output end of the power supply is respectively connected to the power supply end of the drive motor, the power supply end of the controller, and the power supply end of the touch screen; the output end of the controller is connected to the control end of the drive motor; the touch screen is bidirectionally connected to the controller.

[0005] During work, the operating physician first inserts the guide wire through the patient's femoral artery, allowing the guide wire to enter the left ventricle through the aortic valve, and then inserts the extracorporeal part of the guide wire through the wire insertion hole, and then inserts the catheter into the patient's body along the guide wire, so that on the one hand the blood inlet is inserted into the patient's left ventricle, and on the other hand the bleeding outlet is inserted into the patient's aorta.

[0006] The specific working process is as follows: First, open the valve and inject water through the bifurcated pipe. After the water fills the first water pipe, the second water pipe and the bowl-shaped bottom shell, close the valve. Then, start the drive motor, and the output shaft of the drive motor drives the crankshaft to rotate through the driving gear and the driven gear in turn. The crankshaft drives the piston to reciprocate along the cylinder sleeve through the connecting rod, so that the water in the bowl-shaped bottom shell periodically squeezes the elastic diaphragm, thereby pumping blood from the left ventricle to the aorta. The specific pumping process is as follows: when the piston moves forward along the cylinder sleeve, the water in the bowl-shaped bottom shell does not squeeze the elastic diaphragm, the elastic diaphragm is in a flattened state, and negative pressure is formed in the bowl-shaped cavity. Under the action of negative pressure, the blood inlet check valve opens, the arc groove valve plate swings forward around the pivot and blocks the bleeding port, and the blood in the left ventricle flows into the bowl-shaped cavity through the blood inlet, the catheter, and the first nozzle in turn. When the piston moves in the opposite direction along the cylinder sleeve, the water in the bowl-shaped bottom shell squeezes the elastic diaphragm, the elastic diaphragm is in a concave state, and positive pressure is formed in the bowl-shaped cavity. Under the action of positive pressure, the blood inlet check valve is closed, the arc-shaped valve plate swings in the opposite direction around the pivot and blocks the catheter, and the blood in the bowl-shaped cavity flows into the aorta through the first nozzle, the catheter, and the bleeding port in sequence.

[0007] In the above process, the touch screen can send a control instruction to the controller, and the controller controls the operation of the drive motor according to the control instruction. The drive motor, the controller and the touch screen are all powered by a power supply.

[0008] Based on the above process, compared with the existing heart pumps, the connecting rod type interventional heart pump described in the present invention is based on a new structure and has the following advantages: First, compared with implantable heart pumps, the present invention does not need to remain in the body for a long time through implantation surgery, but can be removed from the body after the interventional surgery, thereby effectively improving long-term safety. Second, compared with the magnetic levitation extracorporeal suspension heart pump, the present invention is not limited by magnetic levitation technology, and is not affected by external motion and electromagnetic interference, thereby effectively improving working stability. Third, compared with the pneumatic interventional heart pump, the present invention uses water to periodically squeeze the elastic diaphragm to pump blood, so its pumping force is more stable, thereby effectively avoiding blood cell aggregation during the working process, thereby effectively avoiding thrombosis.

[0009] Furthermore, the inner bottom surface of the box body is fixed with four positioning brackets, a positioning base, a positioning square frame, and four positioning slots; the second box body is supported and fixed on the four positioning brackets; the drive motor is fixed on the positioning base; the power supply is fixedly embedded in the positioning square frame; and the four corners of the controller are fixedly embedded in the four positioning slots in a one-to-one correspondence. When working, the four positioning brackets are used to reliably fix the second box body in the box body. The positioning base is used to reliably fix the drive motor in the box body. The positioning square frame is used to reliably fix the power supply in the box body. The four positioning slots are used to reliably fix the controller in the box body.

[0010] Furthermore, a plurality of heat dissipation fins are provided on the surface of the cylinder sleeve. When working, the heat dissipation fins are used to dissipate heat from the cylinder sleeve.

[0011] The present invention effectively solves the problems of poor long-term safety, poor working stability and easy thrombosis of existing heart pumps, and is suitable for ventricular assist. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 yes Figure 1 Partial structure diagram Figure 1 .

[0014] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0015] Figure 4 yes Figure 3 Schematic diagram of part of the structure.

[0016] Figure 5 yes Figure 2 sectional view of .

[0017] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle.

[0018] Figure 7 yes Figure 1 Partial structure diagram Figure 2 .

[0019] Figure 8 yes Figure 7 Partial structure diagram Figure 1 .

[0020] Fig. 9 yes Figure 7 Partial structure diagram Figure 2 .

[0021] Fig.10 yes Figure 1 Partial structure diagram Figure 3 .

[0022] Fig.11 yes Figure 1 Partial structure diagram Figure 4 .

[0023] Fig.12 yes Fig.11 A partial enlarged view of point C in the middle.

[0024] Fig.13 yes Fig.11 Schematic diagram of part of the structure.

[0025] Fig.14 yes Fig.13 Schematic diagram of part of the structure.

[0026] Fig.15 yes Fig.14 Partial structure diagram Figure 1 .

[0027] Fig.16 yes Fig.14 Partial structure diagram Figure 2 .

[0028] Fig.17 yes Fig.14 Partial structure diagram Figure 3 .

[0029] Fig.18 yes Fig.17 Another angle diagram of the structure.

[0030] Fig.19 yes Figure 1 Another angle diagram of the structure.

[0031] Fig. 20 yes Fig.19 Partial structure diagram Figure 1 .

[0032] Fig.21 yes Fig. 20 A partial enlarged view of point D in the middle.

[0033] Fig. 22 yes Fig. 20 sectional view of .

[0034] Fig.23 yes Fig. 22 A partial enlarged view of point E in the middle.

[0035] Fig.24 yes Fig.23 Schematic diagram of part of the structure.

[0036] Fig.25 yes Fig.19 Partial structure diagram Figure 2 .

[0037] Fig.26 yes Fig.25 Partial structure diagram Figure 1 .

[0038] Fig. 27 yes Fig.25 Partial structure diagram Figure 2 .

[0039] Fig.28 yes Fig.19 Partial structure diagram Figure 3 .

[0040] Fig.29 yes Fig.19 Partial structure diagram Figure 4 .

[0041] Fig.30 yes Fig.29 Schematic diagram of part of the structure.

[0042] Fig.31 yes Fig.30 Partial structure diagram Figure 1 .

[0043] Fig.32 yes Fig.30 Partial structure diagram Figure 2 .

[0044] In the figure: 1-bowl-shaped top shell, 1.1-assembly hole, 2-bowl-shaped cavity, 3-elastic diaphragm, 4-first nozzle, 5-conduit, 5.1-threading hole, 5.2-blood inlet, 5.3-bleeding outlet, 6-blood inlet check valve, 7-pivot, 8-arc groove valve plate, 9-bowl-shaped bottom shell, 10-second nozzle, 11-box, 12-box cover, 13-first box body, 13.1 lower positioning notch A, 13.2-lower positioning notch B, 14-first box cover, 14.1-upper positioning notch A, 14.2-upper positioning notch B, 15-second box body, 15 .1-lower positioning notch C, 15.2-lower installation notch, 16-second box cover, 16.1-upper positioning notch C, 16.2-upper installation notch, 17-cylinder liner, 18-first water pipe, 19-second water pipe, 20-forked pipe, 21-valve, 22-piston, 23-crankshaft, 24-connecting rod, 25-driven gear, 26-driving motor, 27-driving gear, 28-power supply, 29-controller, 30-touch screen, 31-positioning bracket, 32-positioning base, 33-positioning frame, 34-positioning slot, 35-heat sink fin. DETAILED DESCRIPTION

[0045] A connecting rod type interventional heart pump, comprising a bowl-shaped top shell 1; The bowl mouth of the bowl-shaped top shell 1 faces downward, and the shell wall of the bowl-shaped top shell 1 is provided with an assembly hole 1.1; a bowl-shaped cavity 2 is fixedly embedded in the bowl-shaped top shell 1; an elastic diaphragm 3 is sealed and embedded in the bowl mouth of the bowl-shaped cavity 2; a first nozzle 4 is sealed and connected to the cavity wall of the bowl-shaped cavity 2, and the first nozzle 4 passes through the assembly hole 1.1; a catheter 5 is sealed and connected to the first nozzle 4; an end wall is provided at the tail end of the catheter 5, and a threading hole 5.1 is provided through the center of the end wall; a blood inlet 5.2 and a bleeding port 5.3 are provided through the side wall of the tail of the catheter 5, and the distance between the bleeding port 5.3 and the end wall is greater than the blood inlet 5. .2 and the end wall; a blood inlet non-return valve 6 is fixedly embedded in the blood inlet 5.2; a pivot 7 is fixedly passed through the side wall of the tail of the catheter 5, and the pivot 7 is located between the blood inlet 5.2 and the bleeding port 5.3; the axis of the pivot 7 is skewed and perpendicular to the axis of the catheter 5, and the middle of the pivot 7 is located in the catheter 5; an arc groove-shaped valve plate 8 is rotatably mounted in the middle of the pivot 7; the arc groove-shaped valve plate 8 can detachably block the catheter 5 on the one hand, and can detachably block the bleeding port 5.3 on the other hand; the bowl mouth of the bowl-shaped top shell 1 is sealedly connected to a bowl-shaped bottom shell 9; the shell wall of the bowl-shaped bottom shell 9 is sealedly connected to a second nozzle 10; It also includes a box body 11 and a box cover 12 that are butt-jointed with each other; The box body 11 is provided with a first box body 13 and a first box cover 14 that are connected to each other, and a second box body 15 and a second box cover 16 that are connected to each other; a pair of lower positioning notches A13.1 and a pair of lower positioning notches B13.2 are formed at the edge of the box opening of the first box body 13; a pair of upper positioning notches A14.1 and a pair of upper positioning notches B14.2 are formed at the edge of the box opening of the first box cover 14; the pair of upper positioning notches A14.1 and the pair of lower positioning notches A13.1 are connected to form a pair of positioning holes A; the pair of upper positioning notches B14.2 14.2 is connected with a pair of lower positioning notches B13.2 to form a pair of positioning holes B; a pair of lower positioning notches C15.1 and a lower installation notch 15.2 are formed at the edge of the box opening of the second box body 15; a pair of upper positioning notches C16.1 and an upper installation notch 16.2 are formed at the edge of the box opening of the second box cover 16; the pair of upper positioning notches C16.1 and the pair of lower positioning notches C15.1 are connected to form a pair of positioning holes C; the upper installation notch 16.2 and the lower installation notch 15.2 are connected to form a mounting opening; The mounting port is sealed with a cylinder sleeve 17; the tail end of the cylinder sleeve 17 is sealed with a first water pipe 18, and the first water pipe 18 penetrates the side wall of the box body 11; the tail end of the first water pipe 18 is sealed with a second water pipe 19, and the tail end of the second water pipe 19 is sealed with a second nozzle 10; the side wall of the first water pipe 18 is sealed with a bifurcated pipe 20, and the bifurcated pipe 20 is located outside the box body 11; a valve 21 is installed on the bifurcated pipe 20; a piston 2 is slidably mounted in the cylinder sleeve 17 2; a crankshaft 23 is arranged in the second box body 15 and the second box cover 16; a first main journal of the crankshaft 23 rotates through the first positioning hole C; a second main journal of the crankshaft 23 rotates through the second positioning hole C and a pair of positioning holes B; a connecting rod 24 is rotatably mounted between the connecting rod journal of the crankshaft 23 and the piston 22; a driven gear 25 is fixedly mounted on the side of the second main journal of the crankshaft 23, and the driven gear 25 is rotatably embedded in the first box body 13 and the first box cover 14; A driving motor 26 is also provided in the housing 11; the output shaft of the driving motor 26 rotates and passes through a pair of positioning holes A; a driving gear 27 is fixedly mounted on the side of the output shaft of the driving motor 26, and the driving gear 27 is meshed with the driven gear 25; A power supply 28 and a controller 29 are also provided in the box body 11; a touch screen 30 is fixed through the box cover 12; the output end of the power supply 28 is respectively connected to the power supply end of the drive motor 26, the power supply end of the controller 29, and the power supply end of the touch screen 30; the output end of the controller 29 is connected to the control end of the drive motor 26; the touch screen 30 is bidirectionally connected to the controller 29.

[0046] Four positioning blocks 31, a positioning base 32, a positioning frame 33, and four positioning slots 34 are fixed to the inner bottom surface of the box body 11; the second box body 15 is supported and fixed on the four positioning blocks 31; the drive motor 26 is fixed on the positioning base 32; the power supply 28 is fixedly embedded in the positioning frame 33; and the four corners of the controller 29 are fixedly embedded in the four positioning slots 34 in a one-to-one correspondence.

[0047] A plurality of heat dissipation fins 35 are provided on the surface of the cylinder sleeve 17 .

[0048] In specific implementation, the elastic diaphragm 3 is made of rubber. The blood inlet check valve 6 is a duckbill valve. The first water pipe 18 is a rigid water pipe; the second water pipe 19 is a flexible water pipe. The diameter of the driving gear 27 is smaller than the diameter of the driven gear 25.

[0049] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A connecting rod type interventional heart pump, characterized in that: It comprises a bowl-shaped top shell (1); The mouth of the bowl-shaped top shell (1) faces downward, and the shell wall of the bowl-shaped top shell (1) is provided with an assembly hole (1.1); a bowl-shaped cavity (2) is fixedly embedded in the bowl-shaped top shell (1); an elastic diaphragm (3) is sealed and embedded in the mouth of the bowl-shaped cavity (2); a first nozzle (4) is sealed and connected to the cavity wall of the bowl-shaped cavity (2), and the first nozzle (4) passes through the assembly hole (1.1); a catheter (5) is sealed and connected to the first nozzle (4); an end wall is provided at the tail end of the catheter (5), and a threading hole (5.1) is provided through the center of the end wall; a blood inlet (5.2) and a bleeding port (5.3) are provided through the tail side wall of the catheter (5), and the distance between the bleeding port (5.3) and the end wall is greater than the distance between the blood inlet (5.2) and the end wall. 2) the distance between the end wall; a blood inlet non-return valve (6) is fixedly embedded in the blood inlet (5.2); a pivot (7) is fixedly passed through the rear side wall of the catheter (5), and the pivot (7) is located between the blood inlet (5.2) and the bleeding outlet (5.3); the axis of the pivot (7) is skewed and perpendicular to the axis of the catheter (5), and the middle of the pivot (7) is located in the catheter (5); an arc groove-shaped valve plate (8) is rotatably mounted in the middle of the pivot (7); the arc groove-shaped valve plate (8) can detachably block the catheter (5) on the one hand, and can detachably block the bleeding outlet (5.3) on the other hand; the bowl mouth of the bowl-shaped top shell (1) is sealedly connected to a bowl-shaped bottom shell (9); the shell wall of the bowl-shaped bottom shell (9) is sealedly connected to a second nozzle (10); It also includes a box body (11) and a box cover (12) that are butt-jointed with each other; A box body (11) is provided with a first box body (13) and a first box cover (14) that are butted against each other, and a second box body (15) and a second box cover (16) that are butted against each other; a pair of lower positioning notches A (13.1) and a pair of lower positioning notches B (13.2) are provided at the edge of the box opening of the first box body (13); a pair of upper positioning notches A (14.1) and a pair of upper positioning notches B (14.2) are provided at the edge of the box opening of the first box cover (14); the pair of upper positioning notches A (14.1) and the pair of lower positioning notches A (13.1) are butted against each other to form a pair of positioning holes A; the pair of upper positioning notches B (14.2) is butted with a pair of lower positioning notches B (13.2) to form a pair of positioning holes B; a pair of lower positioning notches C (15.1) and a lower mounting notch (15.2) are provided at the edge of the box opening of the second box body (15); a pair of upper positioning notches C (16.1) and an upper mounting notch (16.2) are provided at the edge of the box opening of the second box cover (16); the pair of upper positioning notches C (16.1) and the pair of lower positioning notches C (15.1) are butted with each other to form a pair of positioning holes C; the upper mounting notch (16.2) and the lower mounting notch (15.2) are butted with each other to form a mounting opening; The mounting port is sealedly connected to a cylinder sleeve (17); the rear end of the cylinder sleeve (17) is sealedly connected to a first water pipe (18), and the first water pipe (18) penetrates the side wall of the box body (11); the rear end of the first water pipe (18) is sealedly connected to a second water pipe (19), and the rear end of the second water pipe (19) is sealedly connected to the second nozzle (10); the side wall of the first water pipe (18) is sealedly connected to a bifurcated pipe (20), and the bifurcated pipe (20) is located outside the box body (11); a valve (21) is installed on the bifurcated pipe (20); a movable valve (21) is slidably mounted in the cylinder sleeve (17) a plug (22); a crankshaft (23) is arranged in the second box body (15) and the second box cover (16); a first main journal of the crankshaft (23) rotates through the first positioning hole C; a second main journal of the crankshaft (23) rotates through the second positioning hole C and a pair of positioning holes B; a connecting rod (24) is rotatably mounted between the connecting rod journal of the crankshaft (23) and the piston (22); a driven gear (25) is fixedly mounted on the side of the second main journal of the crankshaft (23), and the driven gear (25) is rotatably embedded in the first box body (13) and the first box cover (14); A driving motor (26) is also provided in the box body (11); the output shaft of the driving motor (26) rotates and passes through a pair of positioning holes A; a driving gear (27) is fixedly mounted on the side of the output shaft of the driving motor (26), and the driving gear (27) is meshed with the driven gear (25); A power supply (28) and a controller (29) are also provided in the box body (11); a touch screen (30) is fixedly connected to the box cover (12); the output end of the power supply (28) is respectively connected to the power supply end of the drive motor (26), the power supply end of the controller (29), and the power supply end of the touch screen (30); the output end of the controller (29) is connected to the control end of the drive motor (26); and the touch screen (30) is bidirectionally connected to the controller (29).

2. A connecting rod type interventional cardiac pump according to claim 1, characterized in that: Four positioning brackets (31), a positioning base (32), a positioning frame (33), and four positioning slots (34) are fixed to the inner bottom surface of the box body (11); the second box body (15) is supported and fixed on the four positioning brackets (31); the drive motor (26) is fixed on the positioning base (32); the power supply (28) is fixedly embedded in the positioning frame (33); and the four corners of the controller (29) are fixedly embedded in the four positioning slots (34) in a one-to-one correspondence.

3. A connecting rod type interventional cardiac pump according to claim 1, characterized in that: A plurality of heat dissipation fins (35) are provided on the surface of the cylinder sleeve (17).

4. A connecting rod type interventional cardiac pump according to claim 1, characterized in that: The elastic diaphragm (3) is made of rubber.

5. The connecting rod type interventional cardiac pump according to claim 1, characterized in that: The blood inlet check valve (6) is a duckbill valve.

6. A connecting rod type interventional cardiac pump according to claim 1, characterized in that: The first water pipe (18) is a rigid water pipe; the second water pipe (19) is a flexible water pipe.

7. The connecting rod type interventional cardiac pump according to claim 1, characterized in that: The diameter of the driving gear (27) is smaller than the diameter of the driven gear (25).

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