Tightness detection device suitable for dialyzer inspection

Abstract

The utility model provides a sealing performance detection device suitable for dialyzer inspection, which does not need to perform dialyzer sealing performance inspection in a water tank, improves the detection efficiency, simultaneously reduces the problem of liquid residue, and comprises a sealing performance detector and an adjustable dialyzer fixer, a plurality of air source columns used for being connected with a dialyzer penetrate out of the sealing performance detector; the adjustable dialyzer fixator comprises a bottom plate, and one or more clamping rings used for fixing a dialyzer shell are arranged in the middle of the bottom plate. A telescopic side sealing pressing plate is arranged on the side face of the bottom plate, and a blood outlet plugging head is arranged on the side sealing pressing plate. A telescopic upper sealing pressing plate is further arranged on the upper portion of the bottom plate, and two dialysate plugging heads for plugging the dialysate inlet and the dialysate outlet respectively are arranged on the lower surface of the upper sealing pressing plate. The blood inlet end of the dialyzer is open and connected to the air source column.

Description

Technical Field

[0001] The utility model relates to the field of dialyzer product qualification detection, and in particular to a tightness detection device suitable for dialyzer inspection. Background Art

[0002] In clinical practice, a dialyzer, combined with dialysis tubing, dialysate, and a dialysis machine, replaces the body's excretion function and is one of the primary methods of renal replacement therapy for patients with acute and chronic renal failure. The dialyzer and dialysis tubing form a vascular pathway outside the body, requiring stringent tightness during use. Failure to meet these tightness requirements can lead to bleeding or fluid leakage during treatment, seriously impacting treatment effectiveness.

[0003] Existing tightness detection methods often use water testing. That is, compressed air is connected to the dialyzer, the regulated air source is passed into the product to be tested, the dialyzer is placed in a water tank, and the product is judged to be defective by visually observing whether bubbles are generated. During the water test, the product needs to be placed in the water tank, which is easy to cause liquid residue and contaminate the product. Regular drainage causes waste, and after the water test is completed, it needs to be dried or blown dry, which wastes energy. At the same time, when testing each dialyzer, it is necessary to wait for the liquid level to stabilize before observing bubbles. It is not economical to use this method for large-scale mass production inspection. Utility Model Content

[0004] The purpose of the utility model is to provide a tightness detection device suitable for dialyzer testing, which does not require the dialyzer tightness test to be performed in a water tank, thereby improving the detection efficiency and reducing the problem of liquid residue.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] A tightness detection device suitable for dialyzer inspection, the tightness detection device includes a tightness detector and an adjustable dialyzer holder, a plurality of gas source columns for connecting to the dialyzer extend through the tightness detector; the adjustable dialyzer holder includes a base plate, the middle portion of which is provided with one or more clamping rings for fixing the dialyzer shell; a retractable side sealing pressure plate is provided on the side of the base plate, and a blood outlet sealing head is provided on the side sealing pressure plate; a retractable upper sealing pressure plate is also provided on the upper portion of the base plate, and the lower surface of the upper sealing pressure plate is provided with two dialysate sealing heads for respectively sealing the dialysate inlet and the dialysate outlet; the blood inlet end of the dialyzer is open, and the blood inlet end is connected to the gas source column.

[0007] In a preferred embodiment of the present invention, the above-mentioned tightness detector includes: an air source compressor, a pressure sensor, a controller and an alarm light. The air source compressor is connected to the air source column and injects an air source of a certain air pressure into the air source column; the air source compressor is provided with a pneumatic solenoid valve and a time relay to open or close the output air source of the air source compressor at a certain time interval; the pressure sensor is provided in the air source column and is used to detect the input air source pressure and the exhaust air source pressure in the air source column; the pressure gauge is provided outside the housing of the tightness detector, and the pressure gauge is electrically connected to the controller; the controller is electrically connected to the air source compressor and the pressure sensor, respectively, and is used to obtain and analyze the tightness status of the dialyzer being detected, and give a warning; the alarm light is provided outside the housing of the tightness detector and is electrically connected to the controller.

[0008] In a preferred embodiment of the present invention, the bottom plate is provided with a slide rail for the side sealing pressure plate to slide; and a stop block is provided in the middle of the bottom plate.

[0009] In a preferred embodiment of the present invention, the above-mentioned side sealing pressure plate includes: an L-shaped sealing pressure plate and a blood outlet sealing head. The bottom of the horizontal bottom plate of the L-shaped sealing pressure plate is provided with a slide groove matching the slide rail; the bottom of the vertical side plate of the L-shaped sealing pressure plate is provided with a first telescopic device connected to the stop block; the blood outlet sealing head is provided in the middle of the vertical side plate.

[0010] In a preferred embodiment of the present invention, the above-mentioned blood outlet sealing head includes a conical head, a first sealing cylinder, a sealing head and a connecting seat which are arranged in sequence from top to bottom and whose diameters increase successively. A first sealing groove is provided in the middle of the first sealing cylinder, and a first sealing ring is assembled in the first sealing groove; a second sealing groove is provided between the sealing head and the connecting seat, the second sealing groove has the same diameter as the first sealing cylinder, and a second sealing ring is provided in the second sealing groove.

[0011] In a preferred embodiment of the present invention, the above-mentioned upper sealing pressure plate includes an arc-shaped sealing pressure plate, and electric telescopic rods are provided on both sides of the arc-shaped sealing pressure plate, and the two ends of the electric telescopic rods are respectively connected to the bottom plate and the arc-shaped sealing pressure plate; two dialysate sealing heads are provided in the middle of the arc-shaped sealing pressure plate.

[0012] In a preferred embodiment of the present invention, a notch is provided on the top of the clamping ring for the dialyzer to be inserted into, and a flexible cushion layer is provided inside the clamping ring.

[0013] In a preferred embodiment of the present invention, the above-mentioned tightness detector further includes a display screen electrically connected to the controller, and the display screen is a display screen with control buttons.

[0014] The beneficial effects of the embodiments of the present utility model are:

[0015] 1. The newly designed dialyzer tightness detection device does not need to be tested in the water tank, which improves the detection efficiency and reduces the problem of liquid residue;

[0016] 2. The tightness detection device includes a tightness detector and multiple adjustable dialyzer holders. By assembling the dialyzers with the holders, multiple dialyzers can be tested, thereby improving the detection efficiency;

[0017] 3. The adjustable dialyzer holder is provided with a base plate, on which a clamping ring is provided for fixing the dialyzer; a retractable side sealing pressure plate is also provided on one side of the base plate, and the side sealing pressure plate is pulled out, and the blood inlet end of the dialyzer is first assembled on the gas source column, and then the side sealing pressure plate is retracted to seal the blood outlet end of the upper dialyzer; then the upper sealing pressure plate is controlled to retract to seal the dialysate inlet and dialysate outlet; then the gas source is started, and a gas source of a certain pressure is injected into the dialyzer, and the reflux gas source pressure is detected after a certain period of time. If it is lower than the preset pressure value, the detection device automatically alarms, and the inspection operation is very convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a structural schematic diagram of a tightness detection device according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic structural diagram of an adjustable dialyzer holder according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic structural diagram of a blood outlet plugging head according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the second sealing ring of an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the electrical components connection of the tightness detection device according to an embodiment of the present utility model.

[0024] Icons: dialyzer 001; tightness detector 110; detector housing 111; gas source compressor 112; pressure sensor 113; controller 114; display screen 115; alarm light 116; gas source column 117; connector 118;

[0025] Adjustable dialyzer holder 120; base plate 121; slide rail 1211; stop block 1212; snap ring 122; side sealing pressure plate 123; slide groove 1231; first telescopic device 1232; blood outlet plugging head 124; conical head 1241; first sealing cylinder 1242; plugging head 1243; connecting seat 1244; first sealing groove 1245; first sealing ring 1246; second sealing groove 1247; second sealing ring 1248; silicone gel 1249; upper sealing pressure plate 125; arc-shaped sealing pressure plate 1251; electric telescopic rod 1252; dialysate plugging head 126. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0031] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] First embodiment

[0033] See Figure 1-5 This embodiment provides a tightness detection device suitable for dialyzer inspection, which includes a tightness detector 110 and multiple adjustable dialyzer holders 120 connected to the tightness detector 110, wherein the adjustable dialyzer holder 120 can be a single holder connected to the tightness detector 110, or multiple adjustable dialyzer holders 120 can be integrated on a base plate 121 and connected to the tightness detector 110. In this embodiment, the second method is selected.

[0034] Specifically, the tightness detector 110 is mainly used to provide gas source, detect gas source, analyze gas source, and provide alarm information. It includes: a detector housing 111, a gas source compressor 112 arranged in the detector housing 111, a pressure sensor 113, a controller 114, and a display screen 115 and an alarm light 116 arranged outside the detector housing 111.

[0035] The controller 114 is electrically connected to the gas source compressor 112 and the pressure sensor 113, respectively, and is used to obtain and analyze the tightness status of the dialyzer 001 being tested and to issue a warning. The gas source compressor 112 is connected to the gas source column and injects a gas source with a certain air pressure into the gas source column. The control of the gas source pressure is completed by the controller 114. The gas source compressor 112 is provided with a pneumatic solenoid valve and a time relay, which open or close the output gas source of the gas source compressor 112 at a certain time interval. The pressure sensor 113 is provided in the gas source column and is used to detect the input gas source pressure and the exhaust gas source pressure in the gas source column, and transmit the acquired detection data to the controller 114. The data processing chip of the controller 114 can convert the signal into a pressure value. After analysis, it is determined whether the dialyzer 001 corresponding to the gas source column has a leak.

[0036] The pressure gauge is arranged on the upper part of the shell of the tightness detector 110, and the pressure gauge is electrically connected to the controller 114, so as to facilitate the inspection personnel to view the numerical value. The display screen 115 is connected to the controller 114 and is arranged in front of the shell. The display screen 115 is used to display the status of the device, and a touch switch is also provided on the display screen 115 to control the start and shut down of electrical components such as the pneumatic solenoid valve and the air source compressor 112. The alarm light 116 is arranged on the upper part of the shell of the tightness detector 110 and is also electrically connected to the controller 114. Different sound and light alarm modes are selected according to the analysis results of the controller 114. For a tightness detector 110 to detect multiple dialyzers 001 at the same time, its air source compressor 112 is provided with more than one air source pipeline, and each branch pipeline is controlled to open or close by a pneumatic solenoid valve. The display screen 115 displays the air pressure of each air source branch, and the pressure gauge displays the average pressure value.

[0037] Multiple gas source columns 117 for connecting to the dialyzers 001 extend from the seal detector 110. The tail section of the gas source column 117 is provided with a connector 118 for sealing the blood inlet end. The blood inlet end of the dialyzer 001 is open and connected to the gas source column 117. The adjustable dialyzer 001 holder 120 is provided with a base plate 121, which is provided with multiple slide rails 1211 for sliding side sealing plates. A stop block 1212 is provided in the middle of the base plate 121. The upper surface of the stop block 1212 is arc-shaped and used to support the dialyzer 001. The arc-shaped upper surface of the stop block 1212 is provided with a flexible silicone pad. The slide rail 1211 and the stop block 1212 constitute a combination that serves the dialyzer 001 alone. Multiple groups of combinations with the same functions are arranged on the base plate 121 for assembling multiple dialyzers 001.

[0038] One or more clamping rings 122 for fixing the outer shell of the dialyzer 001 are provided in the middle part / near the gas source column 117 of each combination on the base plate 121. A notch is provided on the top of the clamping ring 122 for the dialyzer 001 to be inserted into. A flexible cushion layer is provided inside the clamping ring 122, which is used to first insert the dialyzer 001 into the clamping ring 122 when the side sealing pressure plate and the upper sealing pressure plate pop out, and then push it toward the tightness detector 110. After the clamping and sealing, the sides and top of the dialyzer 001 are further sealed.

[0039] A retractable side sealing pressure plate 123 is provided on the side of the bottom plate 121, and a blood outlet sealing head 124 is provided on the upper part of the side sealing pressure plate 123. When the side sealing pressure plate 123 is popped out, it is convenient to assemble the dialyzer 001. When the side sealing pressure plate 123 is retracted, the blood outlet of the dialyzer 001 is pressed tightly; a retractable upper sealing pressure plate 125 is also provided on the upper part of the bottom plate 121. The lower surface of the upper sealing pressure plate 125 is provided with two dialysate sealing heads 126 for respectively blocking the dialysate inlet and the dialysate outlet. When the upper sealing pressure plate 125 is popped out, it is convenient to assemble the dialyzer 001; when the upper sealing pressure plate 125 is retracted, the two dialysate sealing heads 126 are respectively screened into the dialyzer 001 dialysate inlet and outlet seals.

[0040] Specifically, the side sealing pressure plate 123 includes an L-shaped sealing pressure plate and a blood outlet sealing head 124. The bottom of the horizontal bottom plate 121 of the L-shaped sealing pressure plate is provided with a slide groove 1231 matching the slide rail 1211. The slide groove 1231 is assembled on the slide rail 1211 and can slide freely; the bottom of the vertical side plate of the L-shaped sealing pressure plate is provided with a first telescopic device 1232 connected to the stop block 1212. The first telescopic device 1232 is an electric telescopic rod, which is communicated with the controller 114, and the state control of the electric telescopic rod is controlled by the controller 114; the blood outlet sealing head 124 is arranged in the middle of the vertical side plate. In order to facilitate the L-shaped sealing pressure plate to smoothly enter the blood outlet of the dialyzer 001 and complete the closure during the retraction process, the sealing head is further structurally designed.

[0041] Specifically, the blood outlet sealing head 124 includes a conical head 1241, a first sealing cylinder 1242, a sealing head 1243 and a connecting seat 1244, which are arranged in sequence from top to bottom and whose diameters increase successively. A first sealing groove 1245 is provided in the middle of the first sealing cylinder 1242, and a first sealing ring 1246 is assembled in the first sealing groove 1245. The diameter of the first sealing ring 1246 is the same as that of the sealing head 1243, so that when entering the dialyzer 001 blood outlet, the first sealing ring 1246 is partially folded to form a first-stage closure; a second sealing groove 1247 is provided between the sealing head 1243 and the connecting seat 1244, and the second sealing groove 1247 is the same as the diameter of the first sealing cylinder 1242. A second sealing ring 1248 is provided in the second sealing groove 1247, and the interior of the second sealing ring 1248 is hollow and made of flexible material, and is filled with silicone gel 1249, and the second-stage sealing of the port is achieved by extrusion deformation.

[0042] The single dialyzer 001 fixed group is provided with an upper sealing pressure plate 125, which includes an arc-shaped sealing pressure plate 1251 for matching the shape of the dialyzer 001. Electric telescopic rods 1252 are provided on both sides of the arc-shaped sealing pressure plate 1251. The electric telescopic rods 1252 are communicated with the controller 114, and the control of the electric telescopic rods 1252 is also uniformly controlled by the controller 114. The two ends of the electric telescopic rods 1252 are respectively connected to the bottom plate 121 and the arc-shaped sealing pressure plate 1251; two dialysate sealing heads 126 are provided in the middle of the arc-shaped sealing pressure plate 1251. The structure of the dialysate sealing head 126 is similar to that of the blood outlet sealing head 124, but the size is different.

[0043] The operating steps of the dialyzer 001 tightness detection device are:

[0044] Press the control button on the tightness detector display screen 115 to control the electric telescopic rod 1252 to pop out, and then the upper sealing plate 125 and the side sealing plate 123 pop out;

[0045] Then align the blood inlet end of the dialyzer 001 with the gas source column 117, insert the dialyzer 001 into the clamping ring 122, push the dialyzer 001, and clamp the blood inlet end of the dialyzer 001 onto the sealing joint 118 of the gas source column 117;

[0046] Press the control button on the display screen 115 to control the retraction of the electric telescopic rod 1252. At this time, the upper sealing pressure plate 125 and the side sealing pressure plate 123 retract, and during the retraction process, the corresponding plugs are blocked and sealed at the blood outlet, dialysate inlet, and dialysate outlet.

[0047] Press the control button of the air source compressor 112 on the display screen 115 to inject air with a certain pressure into the air source column 117. After a period of time, the output air source of the air source compressor 112 is turned off; the pressure sensor 113 measures the air pressure value in real time, and the controller 114 chip analyzes the air pressure value to determine whether there is an air pressure leak;

[0048] If air pressure leakage occurs, an audible and visual alarm will be given.

[0049] In summary, the advantages of the newly designed dialyzer 001 tightness detection device are: no need to test in a water tank, improving detection efficiency and reducing the problem of liquid residue; the tightness detection device includes a tightness detector 110 and multiple adjustable dialyzer 001 fixtures 120, and multiple dialyzers 001 can be tested by assembling the dialyzer 001 with the fixture, thereby improving detection efficiency; the adjustable dialyzer 001 fixture 120 is provided with a bottom plate 121, and a clamping ring 122 is provided on the bottom plate 121 for fixing the dialyzer 001; A retractable side sealing pressure plate 123 is also provided on one side of the plate 121. The side sealing pressure plate 123 is pulled out, and the blood inlet end of the dialyzer 001 is first assembled on the gas source column 117. Then the side sealing pressure plate 123 is retracted to seal the blood outlet end of the upper dialyzer 001; then the upper sealing pressure plate 125 is controlled to retract to seal the dialysate inlet and dialysate outlet; then the gas source is started, and a gas source with a certain air pressure is injected into the dialyzer 001, and detection is performed at the same time. If the pressure is lower than the pressure value, the detection device will automatically alarm, and the operation is very convenient.

[0050] This specification describes examples of embodiments of the present invention and does not mean that these embodiments illustrate and describe all possible forms of the present invention. It should be understood that the embodiments in the specification can be implemented in a variety of alternative forms. The drawings do not need to be drawn to scale; some features can be enlarged or reduced to show the details of specific components. The specific structural and functional details disclosed should not be interpreted as limiting, but are merely representative bases for teaching those skilled in the art to implement the present invention in various forms. It should be understood by those skilled in the art that the multiple features illustrated and described with reference to any one of the figures can be combined with the features illustrated in one or more other figures to form embodiments that are not explicitly illustrated or described. The illustrated combined features provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the present invention can be used for specific applications or implementations as needed.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tightness detection device suitable for dialyzer testing, characterized in that: The tightness detection device comprises: A tightness detector, wherein multiple gas source columns for connecting to the dialyzer extend through the tightness detector; an adjustable dialyzer holder, wherein the adjustable dialyzer holder includes a base plate, wherein the middle portion of the base plate is provided with one or more clamping rings for fixing the dialyzer housing; a retractable side sealing pressure plate is provided on the side of the base plate, and a blood outlet sealing head is provided on the side sealing pressure plate; a retractable upper sealing pressure plate is also provided on the upper portion of the base plate, and the lower surface of the upper sealing pressure plate is provided with two dialysate sealing heads for respectively sealing the dialysate inlet and the dialysate outlet; the blood inlet end of the dialyzer is open, and the blood inlet end is connected to the gas source column.

2. The tightness detection device for dialyzer testing according to claim 1, characterized in that: The adhesion detector comprises: An air source compressor is connected to the air source column and injects air source of a certain pressure into the air source column; the air source compressor is provided with a pneumatic solenoid valve and a time relay to open or close the output air source of the air source compressor at a certain time interval; a pressure sensor disposed in the gas source column and configured to detect the input gas source pressure and the exhaust gas source pressure in the gas source column; a pressure gauge disposed outside the housing of the tightness detector and electrically connected to the pressure sensor; a controller, the controller being electrically connected to the gas source compressor and the pressure sensor, and configured to obtain and analyze the tightness status of the dialyzer being tested and issue a warning; An alarm light is arranged outside the tightness detector housing and is electrically connected to the controller.

3. The tightness detection device for dialyzer testing according to claim 1, characterized in that: The bottom plate is provided with a slide rail for the side sealing pressure plate to slide; and a stop block is provided in the middle of the bottom plate.

4. The tightness detection device for dialyzer testing according to claim 3, characterized in that: The side sealing plate comprises: An L-shaped sealing pressure plate, wherein the bottom of the horizontal bottom plate of the L-shaped sealing pressure plate is provided with a sliding groove matching the sliding rail; the bottom of the vertical side plate of the L-shaped sealing pressure plate is provided with a first telescoping device connected to the stop block; The blood outlet plugging head is arranged in the middle of the vertical side plate.

5. The tightness detection device suitable for dialyzer testing according to claim 1, characterized in that: The blood outlet sealing head includes a conical head, a first sealing cylinder, a sealing head and a connecting seat, which are arranged in sequence from top to bottom and whose diameters increase successively. A first sealing groove is provided in the middle of the first sealing cylinder, and a first sealing ring is assembled in the first sealing groove; a second sealing groove is provided between the sealing head and the connecting seat, and the second sealing groove has the same diameter as the first sealing cylinder, and a second sealing ring is provided in the second sealing groove.

6. The tightness detection device for dialyzer testing according to claim 1, characterized in that: The upper sealing pressure plate includes an arc-shaped sealing pressure plate, and electric telescopic rods are provided on both sides of the arc-shaped sealing pressure plate. The two ends of the electric telescopic rods are respectively connected to the bottom plate and the arc-shaped sealing pressure plate; two dialysate sealing heads are provided in the middle of the arc-shaped sealing pressure plate.

7. The tightness detection device for dialyzer testing according to claim 1, characterized in that: The top of the clamping ring is provided with a notch for the dialyzer to be clamped in, and a flexible cushion layer is provided inside the clamping ring.

8. The tightness detection device for dialyzer testing according to claim 1, characterized in that: The tightness detector further includes a display screen electrically connected to the controller, and the display screen is a display screen with control buttons.

Images