Separation bag leak detection device of stem cell separator

Abstract

The utility model relates to the field of medical instruments, and discloses a separation bag leak detection device of a stem cell separator. The assembling part is mounted at the bottom of the testing part; the separation bag is connected with the assembly part, and an infusion tube is arranged on the separation bag; wherein the assembling part comprises a mounting groove, a connecting part and a connecting part, and the mounting groove is formed in the bottom of the assembling part; the connecting pipe is mounted in the mounting groove, and the liquid conveying pipe is arranged in the mounting groove and connected with the connecting pipe. According to the utility model, by adopting the design that the sealing pieces are in close contact with the inner wall of the infusion tube, good sealing performance at the joint is ensured, the plurality of sealing pieces can be adapted to different separation bags, and the clamping head can flexibly adjust the clamping position according to requirements so as to adapt to infusion tubes with different specifications, so that the universality of the device is enhanced, and the use is convenient. Therefore, the leak detection device can be suitable for more types of separation bags.

Description

Technical Field

[0001] The utility model relates to the field of medical appliances, in particular to a separation bag leakage detection device for a stem cell separator. Background Art

[0002] During the stem cell separation process, the blood sample is first introduced into the separation bag. Then, the stem cells are separated from other blood components through specific centrifugation or filtration techniques. These techniques may include density gradient centrifugation, immunomagnetic separation, or other advanced cell separation techniques. The design of the separation bag facilitates the effective implementation of these techniques, ensuring efficient and pure separation of stem cells.

[0003] Separation bags are usually also equipped with interfaces and valves to allow the introduction and discharge of liquids during the separation process, as well as to connect other equipment and pipelines. These interfaces and valves are usually designed to be easy to operate and well sealed to prevent sample leakage or contamination. Leak detection of separation bags for stem cell separators is a very important step to ensure the integrity of the separation bags and prevent leakage problems during stem cell separation and storage.

[0004] The existing leak detection device needs to inflate the interior of the separation bag through the infusion tube on the separation bag, so as to monitor the internal pressure over a period of time and determine whether there is a leak by judging the change in pressure. However, when the leak detection device is connected to the separation bag, its adaptability is low, and it is difficult to maintain a stable sealed connection with the tube mouth on the separation bag, and the detection accuracy is low. Utility Model Content

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A separation bag leak detection device for a stem cell separator, comprising:

[0007] Testing Department;

[0008] An assembly part, mounted on the bottom of the testing part;

[0009] A separation bag connected to the assembly portion, wherein the separation bag is provided with an infusion tube;

[0010] Wherein, the assembly part comprises:

[0011] A mounting groove is provided at the bottom of the assembly portion;

[0012] A connecting pipe is installed in the installation groove, the infusion tube is arranged in the installation groove and connected to the connecting pipe, and one end of the connecting pipe away from the infusion tube passes through the installation groove and extends to the outside of the assembly portion;

[0013] A plurality of seals are installed on the connecting tube, and the plurality of seals are arranged in sequence along the length direction of the connecting tube. Starting from the top end of the connecting tube, the diameter of each seal gradually decreases to form a uniformly decreasing diameter sequence. The seals are in contact with the inner wall of the infusion tube and are used for sealing the connecting tube and the infusion tube.

[0014] The testing unit comprises:

[0015] An air pump is installed in the testing part, a detection tube is provided at the air outlet of the air pump, one end of the detection tube is connected to the assembly part, the top end of the connecting tube is connected to the detection tube, and the air pump is used to transport air into the separation bag;

[0016] A sensor is installed in the testing part. The sensor is provided with a detection head, which is arranged in the connecting pipe. The sensor is used to detect the pressure in the separation bag.

[0017] The testing unit also includes:

[0018] The valve is installed in the test part and connected to the detection tube to control the opening and closing of the detection tube.

[0019] The assembly unit further comprises:

[0020] The connecting sleeve is installed on the connecting pipe and connected with a plurality of sealing members, and is used for connecting the sealing members and the connecting pipe.

[0021] The assembly unit further comprises:

[0022] A plurality of clamping heads are arranged in the mounting groove and contact the outer ring of the infusion tube to clamp the infusion tube;

[0023] A plurality of movable seats, wherein a plurality of movable grooves are provided on the inner wall of the mounting groove, the movable seat is installed in the movable groove, one end of the movable seat is connected to the clamping head, and the other end of the movable seat is provided with a threaded groove;

[0024] A plurality of screw rods, one end of which is connected to the thread groove and the other end of which is connected to the first bevel gear;

[0025] A plurality of grooves are arranged around the assembly portion, and driving wheels are connected to the plurality of grooves. The plurality of driving wheels are connected to second bevel gears, and the first bevel gears are meshed with the second bevel gears.

[0026] An adjusting seat is installed on the outer ring of the assembly part, the projection of the adjusting seat is a circular ring, and a rack is installed on the inner ring of the adjusting seat, and the rack is connected to the driving wheel.

[0027] The inner ring of the adjustment seat is connected with a bearing, and the assembly portion is connected to the inner ring of the bearing.

[0028] The projection of the clamping head is a rectangle, and the projection of the rack is an arc.

[0029] The utility model provides a separation bag leak detection device for a stem cell separator. Compared with the prior art, it has the following beneficial effects:

[0030] 1. The design of close contact between the seal and the inner wall of the infusion tube ensures good sealing of the connection, effectively preventing the occurrence of air leakage, and multiple seals can be adapted to different separation bags.

[0031] 2. The sensor in the test unit monitors the pressure changes in the separation bag in real time, which can quickly capture the leakage phenomenon, so as to find and deal with the problem in time, greatly improving the leak detection efficiency, reducing the need for manual intervention, and reducing the difficulty and cost of operation.

[0032] 3. The clamping head can flexibly adjust the clamping position as needed to adapt to infusion tubes of different specifications, which enhances the versatility of the device and enables the leak detection device to be applicable to more types of separation bags, thereby improving its scope of application and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the three-dimensional structure proposed by the utility model.

[0034] Figure 2 The utility model is a connection diagram of the test part, air pump, sensor, valve, detection rod and assembly part.

[0035] Figure 3 It is a partial cross-sectional structural schematic diagram of the sensor, detection rod, detection head, assembly part, connecting tube and infusion tube proposed by the utility model.

[0036] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0037] Figure 5 This is a schematic diagram of the connection between the adjustment seat, rack and bearing proposed in the utility model.

[0038] Figure 6 This is a schematic diagram of the structure of the rack proposed by the utility model.

[0039] The reference numerals in the figure are:

[0040] 1. Testing unit; 101. Air pump; 102. Sensor; 103. Valve; 104. Detection tube; 105. Detection head;

[0041] 2. Assembly part; 201. Mounting groove; 202. Connecting pipe; 203. Connecting sleeve; 204. Seal; 205. Moving seat; 206. Clamping head; 207. Screw rod; 208. First bevel gear; 209. Driving wheel; 210. Second bevel gear; 211. Adjusting seat; 212. Rack; 213. Bearing;

[0042] 3. Separation bag; 301. Infusion tube. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] Reference Figure 1-Figure 6 , a separation bag leak detection device for a stem cell separator, comprising:

[0045] A test part 1; an assembly part 2, installed at the bottom of the test part 1; a separation bag 3, connected to the assembly part 2, and an infusion tube 301 is provided on the separation bag 3; wherein the assembly part 2 comprises: a mounting groove 201, opened at the bottom of the assembly part 2; a connecting tube 202, installed in the mounting groove 201, the infusion tube 301 is arranged in the mounting groove 201 and connected to the connecting tube 202, and one end of the connecting tube 202 away from the infusion tube 301 passes through the mounting groove 201 and extends to the outside of the assembly part 2; a plurality of sealing members 204, installed on the connecting tube 202, and the plurality of sealing members 204 are arranged in sequence along the length direction of the connecting tube 202, and starting from the top end of the connecting tube 202, the diameter of each sealing member 204 gradually decreases to form a uniformly decreasing diameter sequence, and the sealing members 204 are arranged in sequence along the length direction of the connecting tube 202, and the diameter of each sealing member 204 gradually decreases from the top end of the connecting tube 202 to form a uniformly decreasing diameter sequence. 204 contacts the inner wall of the infusion tube 301 and is used to seal the connecting tube 202 and the infusion tube 301. The testing part 1 is responsible for the air pressure test, while the assembly part 2 plays the role of connection and fixation. The mounting groove 201 at the bottom of the assembly part 2 can accommodate and fix the infusion tube 301 on the separation bag 3 to ensure its stable connection with the infusion tube 301. The design of the connecting tube 202 takes into account the sealing requirements. Through the arrangement of multiple sealing members 204, close contact with the inner wall of the infusion tube 301 is achieved, thereby avoiding the problem of air leakage. At the same time, these sealing members 204 are arranged in descending order of diameter, which can be adapted to infusion tubes 301 of different sizes, further improving the adaptability. The sealing member 204 adopts a rubber sealing ring or a silicone sealing ring.

[0046] Reference Figure 2The test section 1 includes: an air pump 101, which is installed in the test section 1. The air outlet of the air pump 101 is provided with a detection tube 104. One end of the detection tube 104 is connected to the assembly section 2. The top of the connecting tube 202 is connected to the detection tube 104. The air pump 101 is used to transport air to the separation bag 3; a sensor 102, which is installed in the test section 1. The sensor 102 is provided with a detection head 105. The detection head 105 is arranged in the connecting tube 202. The sensor 102 is used to detect the pressure in the separation bag 3; a valve 103, which is installed in the test section 1 Inside the test section 1, it is connected to the detection tube 104 and is used to control the opening and closing of the detection tube 104. The sensor 102 adopts a pressure sensor 102, and the valve 103 adopts an electromagnetic valve, and an electric butterfly valve can also be used. The air pump 101 serves as a power source and is responsible for conveying air into the separation bag 3 for pressure testing. The sensor 102 can monitor the pressure changes in the separation bag 3 in real time to determine whether there is a gas leak. The setting of the valve 103 facilitates the opening and closing control of the detection tube 104, making the test process more flexible and controllable.

[0047] Reference Figure 3 and Figure 4The assembly part 2 also includes: a connecting sleeve 203, which is installed on the connecting tube 202 and connected to a plurality of sealing members 204, and is used to connect the sealing members 204 to the connecting tube 202; a plurality of clamping heads 206, which are arranged in the mounting groove 201 and contact the outer ring of the infusion tube 301, and are used to clamp the infusion tube 301; a plurality of movable seats 205, a plurality of movable grooves are opened on the inner wall of the mounting groove 201, and the movable seats 205 are installed in the movable groove, one end of which is connected to the clamping head 206, and the other end is connected to the clamping head 206. A thread groove is provided at one end; a plurality of screw rods 207, one end of which is threadedly connected in the thread groove, and the other end is connected to a first bevel gear 208; a plurality of grooves are provided around the assembly part 2, and a driving wheel 209 is connected in each of the plurality of grooves, and a second bevel gear 210 is connected to each of the plurality of driving wheels 209, and the first bevel gear 208 is meshed with the second bevel gear 210; an adjustment seat 211 is installed on the outer ring of the assembly part 2, and the projection of the adjustment seat 211 is a circular ring, and the inner ring of the adjustment seat 211 is installed The rack 212 is connected to the driving wheel 209. The connecting sleeve 203 and the clamping head 206 enhance the connection and fixing capabilities. The connecting sleeve 203 not only connects the multiple seals 204 together, but also makes the connection between them and the connecting tube 202 more secure. The clamping head 206 achieves stable clamping of the infusion tube 301 by contacting the outer ring of the infusion tube 301, preventing it from shaking or falling off during the test. By rotating the adjusting seat 211, the adjustment The seat 211 drives the rack 212 to move, the rack 212 drives the driving wheel 209 to rotate, the driving wheel 209 can drive the second bevel gear 210 to rotate, the second bevel gear 210 drives the first bevel gear 208 and the screw rod 207 to rotate, the screw rod 207 drives the moving seat 205 to move, and the moving seat 205 can drive the clamping head 206 to move, so that the position of the clamping head 206 can be flexibly adjusted to adapt to infusion tubes 301 of different specifications, thereby improving the versatility and practicality of the device.

[0048] Reference Figure 5 and Figure 6 The inner ring of the adjustment seat 211 is connected with a bearing 213, the assembly part 2 is connected to the inner ring of the bearing 213, the projection of the clamping head 206 is rectangular, the projection of the rack 212 is arc-shaped, and the adjustment seat 211 is connected to the assembly part 2 through the bearing 213. The adjustment seat 211 can be easily rotated and adjusted, and the cooperation between the rack 212 and the driving wheel 209 makes the adjustment process more accurate and reliable. The rectangular design of the clamping head 206 enhances its clamping force.

[0049] During use, first, the separation bag 3 is connected to the assembly part 2 through the infusion tube 301, the installation groove 201 in the assembly part 2 fixes the connecting tube 202, the infusion tube 301 is placed in the installation groove 201 and connected to the connecting tube 202, and a plurality of sealing members 204 are provided on the connecting tube 202, and these sealing members 204 are in close contact with the inner wall of the infusion tube 301 to ensure the sealing of the connection, and the adjustment seat 211 is rotated, the adjustment seat 211 drives the rack 212 to move, the rack 212 drives the driving wheel 209 to rotate, the driving wheel 209 can drive the second bevel gear 210 to rotate, the second bevel gear 210 drives the first bevel gear 208 and the screw rod 207 to rotate, the screw rod 207 drives the moving seat 205 to move, and the moving seat 205 can drive the clamping head 206 to move, so that the position of the clamping head 206 can be flexibly adjusted. The clamping head 206 can clamp and fix the infusion tube 301, and can also adapt to infusion tubes 301 of different specifications. When the leak detection operation starts, the air pump 101 in the test section 1 is started, and air is transported to the connecting tube 202 through the detection tube 104, and then the separation bag 3 is inflated. With the input of gas, the pressure in the separation bag 3 gradually increases, and the sensor 102 in the test section 1 starts to monitor the pressure change in the separation bag 3 in real time through the detection head 105. After the inflation is completed, the valve 103 closes the detection tube 104. If there is a leak in the separation bag 3 or the connection, the pressure in the separation bag 3 will not be able to be maintained normally, but will drop significantly. The sensor 102 can quickly capture this pressure change. According to the pressure change data detected by the sensor 102, it can be determined whether the separation bag 3 has a leak.

[0050] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0051] By adopting a design in which the sealing member 204 is in close contact with the inner wall of the infusion tube 301 , good sealing of the connection is ensured, and air leakage is effectively prevented. In addition, a plurality of sealing members 204 can be adapted to different separation bags 3 .

[0052] By monitoring the pressure changes in the separation bag 3 in real time through the sensor 102 in the test part 1, the leakage phenomenon can be quickly captured, so that the problem can be discovered and handled in time, which greatly improves the leak detection efficiency, reduces the need for manual intervention, and reduces the difficulty and cost of operation.

[0053] The clamping head 206 can flexibly adjust the clamping position as needed to adapt to infusion tubes 301 of different specifications, thereby enhancing the versatility of the device and making the leak detection device applicable to more types of separation bags 3, thereby improving its scope of application and practicality.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A separation bag leak detection device for a stem cell separator, characterized in that: include: Testing Department (1); An assembly portion (2) mounted on the bottom of the testing portion (1); A separation bag (3) connected to the assembly portion (2), wherein the separation bag (3) is provided with an infusion tube (301); Wherein, the assembly part (2) comprises: A mounting groove (201) is provided at the bottom of the assembly portion (2); A connecting tube (202) is installed in the installation groove (201), the infusion tube (301) is arranged in the installation groove (201) and connected to the connecting tube (202), and one end of the connecting tube (202) away from the infusion tube (301) passes through the installation groove (201) and extends to the outside of the assembly portion (2); A plurality of sealing members (204) are mounted on the connecting tube (202). The plurality of sealing members (204) are arranged in sequence along the length direction of the connecting tube (202). Starting from the top end of the connecting tube (202), the diameter of each sealing member (204) gradually decreases to form a uniformly decreasing diameter sequence. The sealing members (204) are in contact with the inner wall of the infusion tube (301) and are used to seal the connecting tube (202) and the infusion tube (301).

2. The separation bag leak detection device of a stem cell separator according to claim 1, characterized in that: The testing unit (1) comprises: An air pump (101) is installed in the testing part (1); a detection tube (104) is provided at the air outlet of the air pump (101); one end of the detection tube (104) is connected to the assembly part (2); the top end of the connecting tube (202) is connected to the detection tube (104); the air pump (101) is used to transport air into the separation bag (3); A sensor (102) is installed in the test section (1); a detection head (105) is provided on the sensor (102); the detection head (105) is arranged in the connecting tube (202); and the sensor (102) is used to detect the pressure in the separation bag (3).

3. The separation bag leak detection device of a stem cell separator according to claim 2, characterized in that: The testing unit (1) further comprises: The valve (103) is installed in the testing part (1), connected to the detection tube (104), and is used to control the opening and closing of the detection tube (104).

4. The separation bag leak detection device of a stem cell separator according to claim 1, characterized in that: The assembly part (2) further comprises: The connecting sleeve (203) is installed on the connecting pipe (202), connected to a plurality of sealing members (204), and used for connecting the sealing members (204) and the connecting pipe (202).

5. The separation bag leak detection device of a stem cell separator according to claim 1, characterized in that: The assembly part (2) further comprises: A plurality of clamping heads (206) are arranged in the mounting groove (201), contacting the outer ring of the infusion tube (301), and are used to clamp the infusion tube (301); A plurality of movable seats (205), wherein the inner wall of the installation slot (201) is provided with a plurality of movable slots, and the movable seat (205) is installed in the movable slot, one end of the movable seat is connected to the clamping head (206), and the other end of the movable seat is provided with a threaded slot; A plurality of screw rods (207), one end of which is connected to the thread groove and the other end of which is connected to the first bevel gear (208); A plurality of grooves are provided around the assembly portion (2); a driving wheel (209) is connected to each of the plurality of grooves; a second bevel gear (210) is connected to each of the plurality of driving wheels (209); and the first bevel gear (208) is meshed with the second bevel gear (210).

6. The separation bag leak detection device of a stem cell separator according to claim 5, characterized in that: An adjustment seat (211) is mounted on the outer ring of the assembly portion (2), the projection of the adjustment seat (211) is in the shape of a circular ring, and a rack (212) is mounted on the inner ring of the adjustment seat (211), the rack (212) being connected to the driving wheel (209).

7. The separation bag leak detection device of a stem cell separator according to claim 6, characterized in that: The inner ring of the adjustment seat (211) is connected to a bearing (213), and the assembly portion (2) is connected to the inner ring of the bearing (213).

8. The separation bag leak detection device of a stem cell separator according to claim 6, characterized in that: The projection of the clamping head (206) is rectangular, and the projection of the rack (212) is arc-shaped.

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