Special pagoda joint for mechanical hemolysis

Abstract

The utility model relates to the technical field of medical instruments, and discloses a special pagoda joint for mechanical hemolysis, which comprises a polyvinyl chloride tube, an upper silica gel sleeve and a lower silica gel sleeve, and the upper silica gel sleeve and the lower silica gel sleeve are respectively connected to two ends of the polyvinyl chloride tube. The inner ring surfaces of the upper silica gel sleeve and the lower silica gel sleeve are integrally connected with an upper silica gel block and a lower silica gel block respectively, the inner surfaces of the upper silica gel block and the lower silica gel block are irregular and surround the inner surfaces of the upper silica gel sleeve and the lower silica gel sleeve, and the surfaces of the two sides of the upper silica gel sleeve and the lower silica gel sleeve are integrally connected with screw blocks. And the screw block is connected with a knob in a screwing manner. According to the technical scheme, the pagoda joint not only can solve the problem that a proper pagoda joint cannot be found due to sample reasons, but also can be perfectly connected with various loops or samples, the sealing performance of a test loop is improved, an experiment system is more stable, and the success rate of an experiment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a special pagoda connector used for mechanical hemolysis. Background Art

[0002] Hemolysis is one of the important parameters for evaluating red blood cell damage caused by blood pumps. Hemolysis caused by blood pumps mainly depends on the design, structure and materials used in the blood pumps. According to Table 1 of GB / T16886.4-2022, some products that may need mechanical hemolysis have been clearly listed. At the same time, the method of the experiment is also specifically described in standard YY / T1620-2018. The experimental method mentions that the hemolysis test is a standard closed loop, which consists of a tested blood pump, a blood bag with a sampling port, a polyvinyl chloride tube (2m long, 9.5mm inner diameter), a pressure sensor, and a flow meter.

[0003] In addition, in the process of building the test loop, we will use one or more pagoda connectors, the function of which is to connect the entire loop in series.

[0004] Although there are various pagoda connectors of different materials and specifications on the market, when we face various samples that need to be subjected to mechanical hemolysis experiments, we cannot guarantee that we can find a suitable pagoda connector, and at the same time, we must ensure that the pagoda connector can perfectly connect the entire circuit without affecting the experimental results. Therefore, we propose a special pagoda connector, improve and optimize it in order to obtain more satisfactory test results. Utility Model Content

[0005] The purpose of the utility model is to provide a special pagoda connector for mechanical hemolysis, which can not only solve the problem of not being able to find a suitable pagoda connector due to sample reasons, but also can be perfectly connected with various circuits or samples, thereby increasing the sealing of the test circuit, making the experimental system more stable, improving the success rate of the experiment, and solving the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special pagoda joint for mechanical hemolysis, comprising a polyvinyl chloride tube, an upper silicone sleeve and a lower silicone sleeve, wherein the upper silicone sleeve and the lower silicone sleeve are respectively connected to the two ends of the polyvinyl chloride tube, and the upper silicone sleeve and the lower silicone sleeve are both connected to the inside of the polyvinyl chloride tube; the inner ring surfaces of the upper silicone sleeve and the lower silicone sleeve are respectively integrally connected with an upper silicone block and a lower silicone block, the inner surfaces of the upper silicone block and the lower silicone block are both irregularly shaped, and surround the inner surfaces of the upper silicone sleeve and the lower silicone sleeve; the surfaces on both sides of the upper silicone sleeve and the lower silicone sleeve are integrally connected with screw blocks, and knobs are connected to the screw blocks by means of screw connection, and the ends of the upper and lower knobs respectively penetrate into the interior of the upper silicone sleeve and the lower silicone sleeve.

[0007] By adopting the above technical solution, the upper silicone sleeve and the lower silicone sleeve at both ends of the polyvinyl chloride tube are used to cover the outer ring of the sample to be tested. Due to the internal structure and material of the silicone sleeve, when the left and right knobs are turned at the same time, the shape and size of the silicone sleeve can be adjusted, as well as the tightness, to achieve a tight connection between the pagoda joint and the sample to be tested or the circuit.

[0008] Optionally, a rotating ball is fixed to the outer end of the knob, and the rotating ball and the knob are connected to form an integral structure.

[0009] By adopting the above technical solution, the knob can be driven to rotate by the rotating ball, thereby achieving the purpose of twisting the knob.

[0010] Optionally, inner grooves are provided on the surfaces of the upper silicone block and the lower silicone block on the inner side of the knob, and the knob inserted into the upper silicone sleeve and the lower silicone sleeve is placed in the inner grooves.

[0011] By adopting the above technical solution, the part of the knob extending into the interior of the upper silicone sleeve and the lower silicone sleeve is received in the inner groove.

[0012] Optionally, a silicone pad is fixed to the end surface of the knob, and the silicone pad is placed at the end of the knob inside the upper silicone sleeve and the lower silicone sleeve.

[0013] By adopting the above technical solution, the knob contacts the surface of the sample to be tested through the silicone pad at the end thereof, which has a certain protective effect.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The technical solution of the present application arranges irregularly shaped, compressible silicone blocks around the upper silicone sleeve and the lower silicone sleeve, which not only solves the problem of not being able to find a suitable pagoda connector due to sample reasons, but also can be perfectly connected with various circuits or samples, thereby increasing the sealing of the test circuit, making the experimental system more stable, and improving the success rate of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the special pagoda connector used for mechanical hemolysis of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the special pagoda connector used for mechanical hemolysis according to the utility model.

[0019] In the figure: 1, polyvinyl chloride tube; 2, upper silicone sleeve; 21, upper silicone block; 3, lower silicone sleeve; 31, lower silicone block; 4, screw block; 41, knob; 411, turning ball; 412, silicone pad; 5, inner groove. DETAILED DESCRIPTION

[0020] See also Figure 1-2 The utility model provides a technical solution: a special pagoda joint for mechanical hemolysis, comprising a polyvinyl chloride tube 1, an upper silicone sleeve 2 and a lower silicone sleeve 3. The main part adopts the polyvinyl chloride tube 1 with the same material as the pipeline required by the mechanical hemolysis test standard. The inner diameter of the polyvinyl chloride tube of the main part is 9.00mm, which is 0.5mm different from the inner diameter of the polyvinyl chloride tube 1 with a length of 2m and an inner diameter of 9.5mm in the mechanical hemolysis loop. The purpose is to just connect the pagoda joint to the polyvinyl chloride tube 1 in the loop.

[0021] The two ends of the polyvinyl chloride tube 1 of the pagoda joint body are respectively connected to the upper silicone sleeve 2 and the lower silicone sleeve 3, which are both connected to the inside of the polyvinyl chloride tube 1. The inner diameter of one end of the upper silicone sleeve 2 and the lower silicone sleeve 3 close to the polyvinyl chloride tube 1 is 10.00 mm, and the inner diameter of the other end is irregular in size and shape, and the upper silicone sleeve 2 and the lower silicone sleeve 3 are provided with irregularly shaped, compressible upper silicone blocks 21 and lower silicone blocks 31 surrounding the upper silicone sleeve 2 and the lower silicone sleeve 3.

[0022] The surfaces of both sides of the upper silicone sleeve 2 and the lower silicone sleeve 3 are integrally connected with screw blocks 4, and a knob 41 is added to the left and right sides of the upper silicone sleeve 2 and the lower silicone sleeve 3 through the screw blocks 4. The ends of the upper and lower knobs 41 respectively penetrate into the interior of the upper silicone sleeve 2 and the lower silicone sleeve 3, and the surfaces of the upper silicone block 21 and the lower silicone block 31 inside the knob 41 are provided with inner grooves 5. The knob 41 inserted into the upper silicone sleeve 2 and the lower silicone sleeve 3 is placed in the inner groove 5. A silicone pad 412 is fixed to the end surface of the knob 41. The silicone pad 412 is placed at the end of the knob 41 inside the upper silicone sleeve 2 and the lower silicone sleeve 3. When the right knob 41 is rotated by the rotating ball 411 integrally connected to the end of the knob 41, it can be adjusted accordingly according to the size and shape of the sample to be tested. Adjustment and change, when we keep turning the knob 41, it keeps changing its own size and shape until it is firmly connected with the sample to be tested, but there will inevitably be gaps, causing blood leakage. Therefore, we add a knob 41 on the left. Due to the structure and material of the upper silicone block 21 and the lower silicone block 31 inside the upper silicone sleeve 2 and the lower silicone sleeve 3, the knob 41 can adjust the tightness between the upper silicone sleeve 2 and the lower silicone sleeve 3 and the sample to be tested. When the left and right knobs 41 are turned at the same time, the shape and size of the upper silicone sleeve 2 and the lower silicone sleeve 3 can be adjusted, as well as the tightness. When the two knobs 41 are turned continuously at the same time until they cannot be turned, it indicates that the pagoda connector is tightly connected to the sample to be tested or the circuit.

[0023] When in use, the polyvinyl chloride tube 1 is placed on the outer ring of the sample to be tested through the upper silicone sleeve 2 or the lower silicone sleeve 3 at both ends thereof, and the irregularly shaped and compressible silicone blocks inside the upper silicone sleeve 2 and the lower silicone sleeve 3 surround the sample to be tested. When the knobs 41 on both sides are rotated by the rotating ball 411, due to the structure and material of the silicone blocks inside the upper silicone sleeve 2 and the lower silicone sleeve 3, the knobs 41 can adjust the tightness between the silicone sleeve and the sample to be tested. When the left and right knobs 41 are rotated at the same time, the shape and size of the silicone sleeve can be adjusted as well as the tightness. At the same time, the two knobs 41 are continuously rotated until the silicone pads 412 at the end thereof are in contact with the surface of the sample to be tested and cannot be rotated, indicating that the pagoda joint is tightly connected to the sample to be tested or the circuit. At this time, the experiment can be started.

Claims

1. A special pagoda connector for mechanical hemolysis, comprising a polyvinyl chloride tube (1), an upper silicone sleeve (2) and a lower silicone sleeve (3), characterized in that: The upper silicone sleeve (2) and the lower silicone sleeve (3) are respectively connected to the two ends of the polyvinyl chloride tube (1), and the upper silicone sleeve (2) and the lower silicone sleeve (3) are both connected to the inside of the polyvinyl chloride tube (1); The inner ring surfaces of the upper silicone sleeve (2) and the lower silicone sleeve (3) are integrally connected to an upper silicone block (21) and a lower silicone block (31) respectively, and the inner surfaces of the upper silicone block (21) and the lower silicone block (31) are both irregular in shape and surround the inner surfaces of the upper silicone sleeve (2) and the lower silicone sleeve (3); The surfaces of both sides of the upper silicone sleeve (2) and the lower silicone sleeve (3) are integrally connected with screw blocks (4), and the screw blocks (4) are connected with knobs (41) by means of screw connection, and the ends of the upper and lower knobs (41) respectively penetrate into the interior of the upper silicone sleeve (2) and the lower silicone sleeve (3).

2. A special pagoda connector for mechanical hemolysis according to claim 1, characterized in that: A rotating ball (411) is fixed to the outer end of the rotating knob (41), and the rotating ball (411) and the rotating knob (41) are connected to form an integral structure.

3. A special pagoda connector for mechanical hemolysis according to claim 1, characterized in that: An inner groove (5) is provided on the surface of the upper silicone block (21) and the lower silicone block (31) inside the knob (41), and the knob (41) inserted into the upper silicone sleeve (2) and the lower silicone sleeve (3) is placed in the inner groove (5).

4. A special pagoda connector for mechanical hemolysis according to claim 1, characterized in that: A silicone pad (412) is fixed to the end surface of the knob (41), and the silicone pad (412) is placed at the end of the knob (41) inside the upper silicone sleeve (2) and the lower silicone sleeve (3).

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