An axial flow blood pump assembly welding device

Abstract

This utility model belongs to the field of medical devices, and in particular to an axial flow blood pump assembly and welding device. It includes a perforated plate, with a first mounting bracket and a second mounting bracket fixedly connected to the upper surface of the perforated plate. A three-jaw chuck is connected to a motor. An axial flow blood pump is clamped onto a base frame. The base frame, in conjunction with a cover plate, securely holds the left side of the axial flow blood pump. A bearing frame is rotatably connected to an abutment bracket via bearings. The abutment bracket abuts against the right end of the axial flow blood pump. Rotating a short threaded shaft drives the abutment bracket to abut against the right end of the axial flow blood pump, quickly clamping the axial flow blood pump. The motor, in conjunction with the device, drives the axial flow blood pump to rotate, enabling rotational laser welding of the axial flow blood pump. Support plates are rotatably connected between the connecting block and the threaded block. Two symmetrical connecting plates are rotatably connected to the left side of the base plate. Rotating the long threaded shaft allows the threaded block to move to the left, using the support plates to support the rotating plates, causing the axial flow blood pump to tilt. The tilting and rotation of the axial flow blood pump improves the efficiency and precision of laser welding.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically an axial flow blood pump assembly and welding device. Background Technology

[0002] Axial flow blood pumps are efficient and compact medical devices used to assist or replace the heart's pumping function. Through their axial flow design, they provide high flow support at low speeds, reducing damage to blood cells. They are primarily used for short-term or long-term treatment of heart failure patients, such as a transition before heart transplantation, permanent support for end-stage heart failure, and extracorporeal circulation support during cardiac surgery. Their miniaturized design also makes them suitable for pediatric patients. Compared to traditional centrifugal pumps, axial flow blood pumps are lighter, more durable, and implantable, improving patients' quality of life. This technology provides an important life support solution for heart failure patients. However, current technologies offer few solutions to the assembly and welding problems of axial flow blood pumps, especially the laser welding of gaps between components. These problems manifest in two main ways: firstly, during welding, the weld seams are not tightly fitted, leading to poor weld quality or even incomplete welds; secondly, the blood pump needs to be welded at different tilt angles, for example, some components require the pump to be horizontal while others require tilting, and adjusting the pump from horizontal to tilt often requires cumbersome disassembly and reassembly operations. Utility Model Content

[0003] The purpose of this invention is to provide an axial flow blood pump assembly and welding device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an axial flow blood pump assembly and welding device, comprising a perforated plate, a first mounting bracket and a second mounting bracket fixedly connected to the upper end face of the perforated plate, a motor fixedly connected to the first mounting bracket, the motor being powered by a three-jaw chuck, the motor driving the three-jaw chuck to rotate, the three-jaw chuck clamping a base frame, the base frame clamping an axial flow blood pump, the base frame cooperating with a cover plate to fix and clamp the left side of the axial flow blood pump, a threaded round block fixedly connected to the second mounting bracket, a threaded short shaft threadedly connected to the threaded round block, and the threaded short shaft fixedly connected to... The device includes a bearing frame with a bearing fixedly connected to its groove. A connecting bracket is rotatably connected to the bearing frame via the bearing. The connecting bracket abuts against the right end of the axial flow blood pump. After the base frame is manually clamped by the three-jaw chuck, the left end of the axial flow blood pump is clamped by the cover plate. Rotating the threaded short shaft causes the connecting bracket to abut against the right end of the axial flow blood pump, quickly clamping the pump. The motor then drives the axial flow blood pump to rotate, achieving rotation of the axial flow blood pump. During laser welding, the two welded parts fit tightly together, resulting in a neat weld and good weld quality.

[0005] A rotating plate is fixedly connected to the lower end face of the perforated plate. A base plate is provided on the lower side of the rotating plate. A limit frame and a connecting frame are fixedly connected to the upper end face of the base plate. A threaded long shaft is rotatably connected between the limit frame and the connecting frame. A threaded block is slidably connected to the base plate from left to right. The threaded block is threadedly connected to the threaded long shaft. A connecting block is fixedly connected to the rotating plate. A support plate is rotatably connected between the connecting block and the threaded block. Two symmetrical connecting plates are rotatably connected to the left side of the base plate. The connecting plates are fixedly connected to the rotating plate. Thus, by rotating the threaded long shaft, the threaded block can be moved to the left. The support plate supports the rotating plate, causing the axial flow blood pump to tilt. The axial flow blood pump tilts and rotates, thereby conveniently adjusting the blood pump to different tilt angles, which can improve the efficiency and precision of laser welding of the blood pump assembly.

[0006] Preferably, the short threaded shaft is fixedly connected to a second handwheel, and the long threaded shaft is fixedly connected to a first handwheel. By rotating the first handwheel and the second handwheel, the long threaded shaft and the short threaded shaft can be easily driven to rotate. The second handwheel plays a limiting role for the short threaded shaft.

[0007] Preferably, the three-jaw chuck, the base frame, the abutment frame, the bearing frame, and the threaded short shaft are aligned left and right to ensure that when the motor drives the three-jaw chuck to rotate, it can drive the axial flow blood pump to rotate stably.

[0008] Preferably, the rotating plate has a groove on its left side to prevent the rotating plate from touching the threaded shaft when it is raised.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention features a base frame, abutment frame, and bearing frame. The left end of the axial flow blood pump is locked by a cover plate fixedly connected to the base frame. The abutment frame is moved by rotating a short threaded shaft, causing it to press against the right end of the axial flow blood pump, tightening the pre-welded blood pump assembly. It can also rotate while clamped, facilitating rotational welding with laser welding equipment. Furthermore, this invention incorporates a long threaded shaft and a support plate. Rotating the first handwheel rotates the long threaded shaft, causing the threaded block to shift to the left, supporting the rotating plate and tilting the axial flow blood pump. This allows for convenient adjustment of the blood pump to different tilt angles, improving the efficiency and precision of laser welding the blood pump assembly. Attached Figure Description

[0011] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0012] Figure 2 for Figure 1 Top view;

[0013] Figure 3 for Figure 2 A schematic diagram of the AA cross-section;

[0014] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0015] Figure 5 This is a three-dimensional schematic diagram of the axial flow blood pump of this utility model after tilting;

[0016] Figure 6 This is a three-dimensional schematic diagram of the support plate of this utility model;

[0017] Figure 7 This is a three-dimensional schematic diagram of the three-jaw chuck of this utility model;

[0018] Figure 8 This is a three-dimensional disassembly diagram of the abutment frame of this utility model. In the diagram: 100, perforated plate; 101, rotating plate; 102, base plate; 103, connecting plate; 104, limiting frame; 105, threaded long shaft; 106, first handwheel; 107, first mounting frame; 108, motor; 109, three-jaw chuck; 110, second mounting frame; 111, threaded short shaft; 112, second handwheel; 113, bearing frame; 114, abutment frame; 115, axial flow pump; 116, cover plate; 117, base frame; 118, connecting frame; 119, threaded square block; 120, connecting block; 121, support plate; 122, threaded round block; 123, bearing; 124, groove. Detailed Implementation

[0019] To facilitate a better understanding of this utility model, the following examples are provided in conjunction with the accompanying drawings. These examples fall within the protection scope of this utility model, but do not limit the protection scope of this utility model.

[0020] Example 1:

[0021] Please see Figure 1-8This utility model provides a technical solution: an axial flow blood pump assembly and welding device, including a perforated plate 100. A first mounting bracket 107 and a second mounting bracket 110 are fixedly connected to the upper end face of the perforated plate 100. A motor 108 is fixedly connected to the first mounting bracket 107. The motor 108 is powered by a three-jaw chuck 109, which can drive the three-jaw chuck 109 to rotate. The three-jaw chuck 109 clamps a base frame 117, which clamps an axial flow blood pump 115. The base frame 117, together with a cover plate 116, fixes and clamps the left side of the axial flow blood pump 115. A threaded block 122 is fixedly connected to the second mounting bracket 110, and a threaded short shaft 11 is threadedly connected to the threaded block 122. 1. The threaded short shaft 111 is fixedly connected to a bearing bracket 113. A bearing 123 is fixedly connected in the groove of the bearing bracket 113. The bearing bracket 113 is rotatably connected to an abutment bracket 114 through the bearing 123. The abutment bracket 114 abuts against the right end of the axial flow blood pump 115. Thus, after the three-jaw chuck 109 is manually driven to clamp the base frame 117, the cover plate 116 clamps the left end of the axial flow blood pump 115. By rotating the threaded short shaft 111, the abutment bracket 114 abuts against the right end of the axial flow blood pump 115, quickly clamping the axial flow blood pump 115. The motor 108 drives the axial flow blood pump 115 to rotate, realizing the rotational laser welding of the axial flow blood pump 115.

[0022] Example 2:

[0023] Please see Figure 1-8 To make laser welding of the axial flow blood pump 115 gaps more efficient and precise, a support plate 121 and a threaded long shaft 105 are provided.

[0024] A rotating plate 101 is fixedly connected to the lower end face of the perforated plate 100. A base plate 102 is provided on the lower side of the rotating plate 101. A limit frame 104 and a connecting frame 118 are fixedly connected to the upper end face of the base plate 102. A threaded long shaft 105 is rotatably connected between the limit frame 104 and the connecting frame 118. A threaded block 119 is slidably connected to the base plate 102. The threaded block 119 is threadedly connected to the threaded long shaft 105. A connecting block 120 is fixedly connected to the rotating plate 101. Each of the threaded blocks 119 is rotatably connected to a support plate 121. The left side of the base plate 102 is rotatably connected to two symmetrical connecting plates 103. The connecting plates 103 are fixedly connected to the rotating plate 101. By rotating the threaded long shaft 105, the threaded blocks 119 can be moved to the left. The support plates 121 support the rotating plate 101, causing the axial flow pump 115 to tilt. The tilting and rotation of the axial flow pump 115 can improve the efficiency and precision of laser welding.

[0025] The threaded short shaft 111 is fixedly connected to a second handwheel 112, and the threaded long shaft 105 is fixedly connected to a first handwheel 106. By rotating the first handwheel 106 and the second handwheel 112, the threaded long shaft 105 and the threaded short shaft 111 can be easily driven to rotate. The second handwheel 112 plays a limiting role on the threaded short shaft 111.

[0026] The three-jaw chuck 109, the base frame 117, the abutment frame 114, the bearing frame 113, and the threaded short shaft 111 are aligned left and right to ensure that when the motor 108 drives the three-jaw chuck 109 to rotate, it can drive the axial flow blood pump 115 to rotate stably.

[0027] The rotating plate 101 has a groove 124 on its left side, which prevents the rotating plate 101 from touching the threaded long shaft 105 when it is raised.

[0028] Working principle:

[0029] When installing the axial flow blood pump 115, first manually drive the chuck of the three-jaw chuck 109 to fix the base frame 117 between the three jaws of the three-jaw chuck 109, and then attach the left side of the axial flow blood pump 115 to the base frame 117. Then, use bolts to fix the cover plate 116 from the upper side of the base frame 117 to the base frame 117 to fix the left end of the axial flow blood pump 115. Then, hold the abutment frame 114 to align the abutment frame 114 with the axial flow blood pump 115. Then, turn the second handwheel 112. The second handwheel 112 drives the threaded short shaft 111 to rotate and move to the left, pushing the abutment frame 114 to the left and abutting the right side of the axial flow blood pump 115, thereby making it easy to fix and install the axial flow blood pump 115.

[0030] Before laser welding, the first handwheel 106 is manually rotated, which drives the threaded long shaft 105 to rotate. The rotation of the threaded long shaft 105 drives the threaded block 119 to move to the left. The leftward movement of the threaded block 119 pushes the support plate 121 to support the rotating plate 101, causing the rotating plate 101 to tilt and tilt the axial flow blood pump 115. This allows for convenient adjustment of the tilt angle of the axial flow blood pump 115. The motor 108 is then started, driving the axial flow blood pump 115 to rotate. In conjunction with the laser welding equipment, efficient and precise laser welding is performed on the welding seam of the axial flow blood pump 115.

[0031] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An axial flow blood pump assembly and welding device, comprising an orifice plate (100), characterized in that: The upper end face of the perforated plate (100) is fixedly connected to a first mounting bracket (107) and a second mounting bracket (110). The first mounting bracket (107) is fixedly connected to a motor (108). The motor (108) is powered by a three-jaw chuck (109). The motor (108) can drive the three-jaw chuck (109) to rotate. The three-jaw chuck (109) clamps a base frame (117). The base frame (117) clamps an axial flow blood pump (115). The base frame (117) cooperates with a cover plate (116) to fix and clamp. On the left side of the axial flow blood pump (115), the second mounting bracket (110) is fixedly connected to a threaded round block (122), the threaded round block (122) is threadedly connected to a threaded short shaft (111), the threaded short shaft (111) is fixedly connected to a bearing bracket (113), a bearing (123) is fixedly connected in the groove of the bearing bracket (113), and the bearing bracket (113) is rotatably connected to an abutment bracket (114) through the bearing (123), the abutment bracket (114) abuts against the right end of the axial flow blood pump (115); A rotating plate (101) is fixedly connected to the lower end face of the perforated plate (100). A base plate (102) is provided on the lower side of the rotating plate (101). A limit frame (104) and a connecting frame (118) are fixedly connected to the upper end face of the base plate (102). A threaded long shaft (105) is rotatably connected between the limit frame (104) and the connecting frame (118). A threaded block (119) is slidably connected to the left and right sides of the base plate (102). The threaded block (119) is threadedly connected to the threaded long shaft (105). A connecting block (120) is fixedly connected to the rotating plate (101). A support plate (121) is rotatably connected between the connecting block (120) and the threaded block (119). Two symmetrical connecting plates (103) are rotatably connected to the left side of the base plate (102). The connecting plate (103) is fixedly connected to the rotating plate (101).

2. The axial flow blood pump assembly and welding device according to claim 1, characterized in that: The threaded short shaft (111) is fixedly connected to a second handwheel (112), and the threaded long shaft (105) is fixedly connected to a first handwheel (106). The second handwheel (112) serves to limit the position of the threaded short shaft (111).

3. The axial flow blood pump assembly and welding device according to claim 2, characterized in that: The three-jaw chuck (109), the base frame (117), the abutment frame (114), the bearing frame (113), and the threaded short shaft (111) are aligned left and right.

4. The axial flow blood pump assembly and welding device according to claim 3, characterized in that: The rotating plate (101) has a groove (124) on its left side.

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