Flexible membrane pivot-driven blood pump

Abstract

A flexible membrane pivot-driven blood pump, which comprises: a pump body (10) and an inlet joint (11) and an outlet joint (12) in communication with each other on the pump body (10). Ends of the inlet joint (11) and the outlet joint (12) are each in communication with a hose (13) via a fastening mechanism; the fastening mechanism comprises a snap groove (20) provided on the inlet joint (11), and the surface of the inlet joint (11) is provided with a plurality of pressing grooves (21) in communication with the snap groove (20). A first limit ring (22) and a second limit ring (70) are separately and fixedly connected to the outer side of the inlet joint (11), and an external thread (80) is arranged on the inlet joint (11) between the first limit ring (22) and the second limit ring (70). Via the coordination of a movable tube and the external thread, the present disclosure solves the problem that none of the inlet joint and the outlet joint of existing artificial blood pumps is provided with a fastening mechanism to fasten the hose and thus the stability in connection between the hose and the joints is poor as the hose, when connected, can only be elastically snapped into the two joints.

Description

A flexible membrane pivot driven blood pump Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a flexible membrane pivot-driven blood pump. Background Art

[0002] At present, the number of patients with heart failure in China is increasing year by year. One of the effective means of treating late-stage heart failure is the artificial implantation of a mechanical ventricular assist device, mainly a left ventricular assist device. However, most existing left ventricular assist devices are large in size and require highly invasive and high-risk surgical implantation. Therefore, they are usually only used in patients with end-stage heart failure. For patients with heart failure that has not yet reached the end stage, consideration is given to implanting a smaller pump to avoid the above problems and reduce the morbidity rate during surgery. However, standard blood pumps that can be used clinically are mainly divided into axial flow pumps and centrifugal pumps. They are both rotary pumps. The high-speed rotation of their rotors can damage blood components and cause hemolysis, thrombosis and bleeding complications. In addition, they operate at a single pump speed, which will cause the patient's pulse pressure to decrease during clinical use, followed by complications related to continuous non-physiological blood pumping, such as gastrointestinal bleeding, aortic valve insufficiency or stroke. Therefore, researchers have developed a pulsation algorithm for this rotary pump to improve flushing and thus reduce the formation of thrombi.

[0003] During use of the artificial blood pump in the prior art, neither the inlet connector nor the outlet connector on the existing artificial blood pump has a fastening mechanism to fasten the hose. When the hose is connected, it can only be inserted into the two connectors by utilizing its elasticity, resulting in poor stability between the hose and the connector. Therefore, it is very necessary to involve a flexible membrane armature driven blood pump in the existing field of artificial blood pumps.

[0004] Summary of the Invention

[0005] The object of the present invention is to provide a flexible membrane pivot-driven blood pump, which has the advantages of: through the cooperation of a movable tube and an external thread, it solves the problem that the inlet and outlet connectors on the existing artificial blood pumps have no fastening mechanism to fasten the hose. When the hose is connected, it can only be inserted into the two connectors by utilizing the elasticity of the hose, resulting in poor stability between the hose and the connector.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a flexible membrane pivot-driven blood pump, comprising a pump body and an inlet connector and an outlet connector connected to the pump body, wherein the ends of the inlet connector and the outlet connector are connected to a hose through a fastening mechanism;

[0007] The fastening assembly includes a card slot provided on the inlet joint, a plurality of pressing grooves connected to the card slot provided on the surface of the inlet joint, a first limiting ring and a second limiting ring fixedly connected to the outer side of the inlet joint, an external thread provided on the inlet joint between the first limiting ring and the second limiting ring, an inner cavity provided in the inlet joint, a plurality of mounting tubes provided inside the inner cavity, one end of the mounting tube being movably connected to an insertion rod, and an end of the insertion rod away from the mounting tube being movably connected to an operating plate;

[0008] The inlet joint is provided with a clamping mechanism;

[0009] The clamping mechanism includes an adjusting spring connected to the mounting tube and the insertion rod, the two ends of the adjusting spring are respectively connected to the operating panel and the inner cavity, and a movable tube is installed on the operating panel, one end of the movable tube is movably inserted into the card slot, and a plurality of connecting blocks are fixedly connected to the movable tube, and the end of the connecting block is connected to a fixed block near the inlet joint, and a pressing mechanism is provided on the fixed block.

[0010] The present invention is further configured as follows: the pressing mechanism includes a placement groove opened on the fixed block, a guide rod is slidably connected in the placement groove, one end of the guide rod is connected to a clamping block, an arc block is provided at the end of the guide rod away from the clamping block, and a plurality of telescopic springs are fixedly connected between the arc block and the fixed block.

[0011] The present invention is further configured as follows: an adjustment mechanism is also provided on the inlet joint, the adjustment mechanism includes a threaded sleeve threadedly connected to the external thread, the threaded sleeve is located between the first limiting ring and the second limiting ring, one end of the threaded sleeve is connected to a connecting disk, a connecting pipe is fixedly connected to the connecting disk, a plurality of connecting rods are provided on the connecting disk, an end of the connecting rod away from the connecting disk is connected to a mounting rod, and an end of the mounting rod away from the connecting rod is connected to a push tube.

[0012] The present invention is further configured such that: the connecting rod is located outside the second limiting ring, and the mounting rod is located on one side of the second limiting ring.

[0013] The present invention is further configured as follows: a traction mechanism is also provided on the inlet joint, the traction mechanism includes a movable port symmetrically opened on the connecting pipe, an assembly block is symmetrically fixedly connected to the outer side of the connecting pipe, a slot is provided at one end of the assembly block, and a first clamping hole and a second clamping hole connected to the slot are provided on the surface of the assembly block.

[0014] The present invention is further configured as follows: the traction mechanism includes an insert block connected to the slot, a guide block is provided at one end of the insert block, the guide block is movably assembled corresponding to the moving port, an extension tube is commonly connected between the two guide blocks, and the extension tube is located between the push tube and the connecting tube.

[0015] The present invention is further configured as follows: the traction mechanism also includes an inner convex ring fixedly connected to the inner wall of the extension tube, an operating cavity is provided inside the plug block, an elastic spring is fixedly connected to the operating cavity, a push plate is provided at one end of the elastic spring, a telescopic button is installed on the push plate, and the telescopic button is connected through the plug block.

[0016] The present invention is beneficial in that:

[0017] 1. When the inlet connector and the outlet connector are respectively inserted through the hose, one end of the hose is located in the slot, and the threaded sleeve is rotated on the external thread, so that the connecting rod drives the push tube on the mounting rod to rotate and move at the same time, so that the push tube can push the connecting block to move, and the connecting block is pushed to make the movable tube move on the inner cavity, and one end of the insertion rod moves inside the mounting tube, and the adjustment spring is stretched. At this time, the inner wall of the connecting block and the slot clamps the surface of the hose, thereby improving the convenience of operation.

[0018] 2. The present invention moves the fixed block on the connecting block toward the pressing groove until the card block is located on one side of the pressing groove, presses the telescopic button on the second card hole, causes the elastic spring to contract, moves the plug block on the slot, causes the telescopic button to be replaced to engage with the first card hole, at this time the inner convex ring on the extension tube exerts force on the arc block, causes the arc block to drive the guide rod to move on the fixed block, the telescopic spring contracts, and the guide rod drives the card block to clamp the surface of the hose into the pressing groove, thereby increasing the stability between the hose and the inlet connector and the outlet connector respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of a flexible membrane armature driven blood pump according to the present invention;

[0020] FIG2 is a schematic diagram of the fastening mechanism and pipeline assembly structure of the present invention;

[0021] FIG3 is a schematic cross-sectional view of the fastening mechanism and pipeline assembly of the present invention;

[0022] FIG4 is a schematic diagram of the exploded structure of the adjustment mechanism and the clamping mechanism of the present invention;

[0023] FIG5 is a schematic cross-sectional view of the clamping mechanism of the present invention;

[0024] FIG6 is a schematic cross-sectional view of the adjustment mechanism of the present invention;

[0025] FIG7 is a schematic cross-sectional view of the traction mechanism of the present invention;

[0026] FIG8 is a schematic structural diagram of the pressing mechanism of the present invention.

[0027] Reference numerals: 10, pump body; 11, inlet connector; 12, outlet connector; 13, hose; 20, 1. Clamping slot; 21. Pressing slot; 22. First limiting ring; 23. Threaded sleeve; 30. Connecting pipe; 31. Moving port; 32. Guide block; 33. Insert block; 40. Assembly block; 41. Extension pipe; 42. Inner convex ring; 43. Connecting plate; 50. Inner cavity; 51. Mounting pipe; 52. Insert rod; 53. Operating panel; 60. Adjusting spring; 61. Movable pipe; 62. Connecting block; 63. Fixed block; 70. Second limiting ring; 71. Connecting rod; 72. Mounting rod; 73. Pushing pipe; 80. External thread; 81. Slot; 82. First clamping hole; 83. Second clamping hole; 90. Operating cavity; 91. Elastic spring; 92. Pushing plate; 93. Telescopic button; 94. Placement slot; 95. Guide rod; 96. Clamping block; 97. Arc block; 98. Telescopic spring. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Embodiment: A flexible membrane armature driven blood pump, referring to Figures 1 to 5, includes a pump body 10 and a hose 13. The pump body 10 is fixedly equipped with an inlet connector 11, and the pump body 10 is fixedly equipped with an outlet connector 12. The inlet connector 11 and the outlet connector 12 are both clamped with the hose 13. The inlet connector 11 and the outlet connector 12 are both provided with a clamping groove 20. One end of the hose 13 is located in the clamping groove 20. The inlet connector 11 and the outlet connector 12 are both provided with a plurality of pressing grooves 21. The pressing groove 21 is located on one side of the clamping groove 20. The inlet connector 11 and the outlet connector 12 are both fixedly equipped with a first limiting ring 22. The inlet connector 11 The second limiting ring 70 is fixedly assembled on the inlet and outlet joints 12, the first limiting ring 22 and the second limiting ring 70 and the pressing groove 21 are respectively located on both sides of the card groove 20, the inlet joint 11 and the outlet joint 12 are fixedly assembled with an external thread 80, the external thread 80 is located between the second limiting ring 70 and the first limiting ring 22, the interior of the inlet joint 11 and the outlet joint 12 are both provided with an inner cavity 50, and a plurality of mounting tubes 51 are fixedly assembled on the inner cavity 50, one end of the mounting tube 51 is movably equipped with an insertion rod 52, one end of the insertion rod 52 moves inside the mounting tube 51, and one end of the insertion rod 52 is fixedly assembled with an operating panel 53. An adjusting spring 60 is fixedly assembled between the operating plate 53 and the inner cavity 50, and the mounting tube 51 and the insertion rod 52 are assembled on the inner side of the adjusting spring 60. A movable tube 61 is fixedly assembled on the operating plate 53, and one end of the movable tube 61 is movably inserted into the card slot 20, and a plurality of connecting blocks 62 are fixedly assembled on the movable tube 61. The connecting blocks 62 are located in the card slot 20, and one end of the connecting blocks 62 is fixedly assembled with a fixed block 63. The fixed blocks 63 are respectively located on one side of the inlet connector 11 and the outlet connector 12. When the hose 13 is respectively inserted into the inlet connector 11 and the outlet connector 12, one end of the hose 13 is located in the card slot 20, pushing the connecting block 62, so that the movable tube 61 moves on the inner cavity 50, and one end of the insertion rod 52 moves inside the mounting tube 51, and the adjusting spring 60 is stretched. At this time, the connecting block 62 and the inner wall of the card slot 20 clamp the surface of the hose 13, and the fixed block 63 on the connecting block 62 moves toward the direction of the pressing groove 21.

[0030] 8 , the fixed blocks 63 are each provided with a placement slot 94 , and the fixed blocks 63 are each movably equipped with a guide rod 95 , one end of the guide rod 95 is movably inserted into the placement slot 94 , and one end of the guide rod 95 is fixedly equipped with a clamping block 96 that moves on the placement slot 94 , and the other end of the guide rod 95 is fixedly equipped with an arc block 97 , and a telescopic spring 98 is fixedly equipped between the arc block 97 and the fixed block 63 , and the fixed block 63 on the connecting block 62 moves toward the direction of the pressing slot 21 until the clamping block 96 is located on one side of the pressing slot 21 , and the arc block 97 is subjected to force, so that the guide rod 95 moves on the fixed block 63 , and the telescopic spring 98 contracts, and the guide rod 95 drives the clamping block 96 to clamp the surface of the hose 13 into the pressing slot 21, further increasing the stability between the hose 13 and the inlet connector 11 and the outlet connector 12 respectively.

[0031] 4 and 6 , a threaded sleeve 23 is threadedly assembled on the external thread 80 , and the threaded sleeve 23 is located between the first limiting ring 22 and the second limiting ring 70 , and one end of the threaded sleeve 23 is fixedly assembled with a connecting disk 43 , and a connecting pipe 30 is fixedly assembled on the connecting disk 43 , and the connecting pipe 30 is located on the outside of the second limiting ring 70 , and a plurality of connecting rods 71 ​​are fixedly assembled on the connecting disk 43 , and the connecting rod 71 is located on one side of the second limiting ring 70 , and one end of the connecting rod 71 is fixedly assembled with a mounting rod 72 , and the mounting rod 72 is located on one side of the second limiting ring 70 , and one end of the plurality of mounting rods 72 is fixedly assembled with a push tube 73 , and the threaded sleeve 23 is rotated and moved on the external thread 80 so that the connecting rod 71 drives the push tube 73 on the mounting rod 72 to rotate and move at the same time, so that the push tube 73 can push the connecting block 62 to move.

[0032] 6 and 7, the connecting tube 30 is symmetrically provided with a moving port 31, the surface of the connecting tube 30 is symmetrically fixedly equipped with an assembly block 40, one end of the assembly block 40 is provided with a slot 81, the surface of the assembly block 40 is provided with a first card hole 82 communicating with the slot 81, the surface of the assembly block 40 is provided with a second card hole 83 communicating with the slot 81, the slot 81 is movably equipped with an insert block 33, one end of the insert block 33 is fixedly equipped with a guide block 32 that moves in the moving port 31, an extension tube 41 is fixedly assembled between the two guide blocks 32, the extension tube 41 is located between the push tube 73 and the connecting tube 30, the inner wall of the extension tube 41 is fixedly equipped with an inner convex ring 42, and the interior of the insert block 33 is provided with The operating chamber 90 is fixedly equipped with an elastic spring 91, one end of the elastic spring 91 is fixedly equipped with a push plate 92, and the push plate 92 is fixedly equipped with a telescopic button 93. The telescopic button 93 movably passes through the plug block 33, and one end of the telescopic button 93 is only engaged with one of the first card hole 82 and the second card hole 83. The telescopic button 93 on the second card hole 83 is pressed to shrink the elastic spring 91, and the plug block 33 is moved on the slot 81, so that the telescopic button 93 is replaced to engage with the first card hole 82. At this time, the inner convex ring 42 on the extension tube 41 exerts force on the arc block 97, so that the arc block 97 drives the guide rod 95 to move on the fixed block 63.

[0033] Working principle: When the hose 13 is respectively inserted into the inlet connector 11 and the outlet connector 12, one end of the hose 13 is located in the card slot 20, and the threaded sleeve 23 is rotated on the external thread 80, so that the connecting rod 71 drives the push tube 73 on the mounting rod 72 to rotate and move, so that the push tube 73 can push the connecting block 62 to move, and the connecting block 62 is pushed to move the movable tube 61 on the inner cavity 50. One end of the insertion rod 52 moves inside the mounting tube 51, and the adjustment spring 60 is stretched. At this time, the connecting block 62 and the inner wall of the card slot 20 clamp the surface of the hose 13, and the fixed block 63 on the connecting block 62 presses toward The guide rod 95 is moved on the fixed block 63, and the telescopic spring 98 is contracted. The guide rod 95 drives the card block 96 to clamp the surface of the hose 13 into the pressing groove 21, thereby increasing the stability between the hose 13 and the inlet connector 11 and the outlet connector 12.

[0034] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A flexible membrane pivot-driven blood pump, characterized in that: The invention comprises a pump body (10) and an inlet joint (11) and an outlet joint (12) connected to the pump body (10); the ends of the inlet joint (11) and the outlet joint (12) are connected to a hose (13) through a fastening mechanism; the fastening mechanism comprises a clamping groove (20) provided on the inlet joint (11); a plurality of pressing grooves (21) connected to the clamping groove (20) are provided on the surface of the inlet joint (11); the outer side of the inlet joint (11) is fixedly connected to a first A limiting ring (22) and a second limiting ring (70), an external thread (80) is provided on the inlet joint (11) between the first limiting ring (22) and the second limiting ring (70), an inner cavity (50) is provided in the inlet joint (11), a plurality of mounting tubes (51) are provided on the inner side of the inner cavity (50), one end of the mounting tube (51) is movably connected to an insertion rod (52), and the end of the insertion rod (52) away from the mounting tube (51) is movably connected to an operating plate (53); The inlet joint (11) is provided with a clamping mechanism; The clamping mechanism includes an adjusting spring (60) connected to the mounting tube (51) and the insertion rod (52), the two ends of the adjusting spring (60) are respectively connected to the operating plate (53) and the inner cavity (50), and a movable tube (61) is installed on the operating plate (53), one end of the movable tube (61) is movably inserted into the card slot (20), and a plurality of connecting blocks (62) are fixedly connected to the movable tube (61), and the end of the connecting block (62) is connected to a fixed block (63) near the inlet joint (11), and the fixed block (63) is provided with a pressing mechanism; The pressing mechanism comprises a placement groove (94) provided on the fixed block (63), a guide rod (95) is slidably connected in the placement groove (94), one end of the guide rod (95) is connected to a clamping block (96), an arc block (97) is provided at one end of the guide rod (95) away from the clamping block (96), and a plurality of telescopic springs (98) are fixedly connected between the arc block (97) and the fixed block (63); The inlet joint (11) is also provided with an adjustment mechanism, which includes a threaded connection A threaded sleeve (23) on the external thread (80) is located between the first limiting ring (22) and the second limiting ring (70), one end of the threaded sleeve (23) is connected to a connecting disk (43), a connecting pipe (30) is fixedly connected to the connecting disk (43), a plurality of connecting rods (71) are provided on the connecting disk (43), one end of the connecting rod (71) away from the connecting disk (43) is connected to a mounting rod (72), and one end of the mounting rod (72) away from the connecting rod (71) is connected to a push tube (73).

2. The flexible membrane pivot-driven blood pump according to claim 1, characterized in that: The connecting rod (71) is located outside the second limiting ring (70), and the mounting rod (72) is located on one side of the second limiting ring (70).

3. The flexible membrane pivot-driven blood pump according to claim 1, characterized in that: The inlet joint (11) is further provided with a traction mechanism, the traction mechanism comprising a movable port (31) symmetrically provided on the connecting pipe (30), an assembly block (40) symmetrically fixedly connected to the outer side of the connecting pipe (30), a slot (81) provided at one end of the assembly block (40), and a first clamping hole (82) and a second clamping hole (83) communicated with the slot (81) provided on the surface of the assembly block (40).

4. The flexible membrane pivot-driven blood pump according to claim 3, characterized in that: The traction mechanism comprises an insert block (33) connected to the slot (81); a guide block (32) is provided at one end of the insert block (33); the guide block (32) is movably assembled corresponding to the movable opening (31); an extension tube (41) is commonly connected between the two guide blocks (32), and the extension tube (41) is located between the push tube (73) and the connecting tube (30).

5. The flexible membrane pivot-driven blood pump according to claim 4, characterized in that: The traction mechanism also includes an inner convex ring (42) fixedly connected to the inner wall of the extension tube (41), an operating cavity (90) is provided inside the plug block (33), an elastic spring (91) is fixedly connected to the operating cavity (90), a push plate (92) is provided at one end of the elastic spring (91), a telescopic button (93) is installed on the push plate (92), and the telescopic button (93) is connected to the plug block (33) through the inside.

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