A device for autonomous collection of intestinal microecological samples

Abstract

The application relates to the technical field of intestinal sampling, in particular to a device for autonomously collecting intestinal micro-ecological samples, which comprises a colonoscope for observing the internal intestinal structure, the colonoscope comprises an outer tube for supporting the outside of the anus, an collecting head for deep observation in the intestine is slidably matched in the outer tube, and a connecting mechanism for pushing the collecting head is fixedly connected to one end of the collecting head; a sealing film for sealing the connecting mechanism is arranged on the outer side of the collecting head, and a sampling mechanism for contacting and sampling the intestinal wall outside the sealing film is arranged in the sealing film; the device is used for collecting samples at different intestinal positions, reduces the damage to the patient in the sampling process, and retains the activity and function of the bacterial flora.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intestinal sampling, in particular to a device for autonomously collecting intestinal microecological samples. BACKGROUND

[0002] Due to the significant differences in the distribution of flora in different parts of the intestine, such as the small intestine, colon, rectum, etc., the samples collected by the anal route may not represent the flora structure of the entire intestine, especially the small intestine flora.

[0003] For example, the feces from the distal rectum to the anus can reflect the microbial community of the distal colon and rectum, but may not fully represent the microorganisms of the small intestine or the proximal colon; the intestinal mucosa tissue or brushings of the duodenum / jejunum mucosa can reflect the proximal small intestine microorganisms, while the intestinal mucosa tissue or brushings of the colon mucosa reflect the proximal colon microorganisms, which are significantly different from fecal samples.

[0004] Therefore, in the prior art, visual anoscopy or rectoscopy can be used to directly obtain intestinal mucosa tissue or brushings to provide more accurate information on flora composition and function, and also provide irreplaceable sample support for early disease diagnosis, precise treatment, and mechanism analysis.

[0005] However, since in vivo sampling is an invasive procedure, it may cause anal pain, burning sensation, or defecation reflex through anal manipulation, resulting in patient non-compliance. Secondly, due to the structure and shape of the human intestinal tract, if the sampling is too shallow, it may only touch the anal flora, and if it is too deep, it may damage the intestinal mucosa or cause discomfort, making sampling difficult. During clinical collection, the sample may be mixed with samples from different positions, causing cross contamination and resulting in biased sampling results. Therefore, the present application provides a sample collection device that can autonomously collect samples from different positions in the intestine, reducing damage to the patient during sampling and preserving the activity and function of the flora. SUMMARY

[0006] To solve the above problems, the present application provides a device for autonomously collecting intestinal microecological samples, which is used for sample collection at different intestinal positions, reduces damage to the patient during sampling, and preserves the activity and function of the flora.

[0007] To achieve the above purpose, the technical scheme of the present application is as follows: a device for autonomously collecting intestinal microecological samples, comprising an enteroscope for observing the internal intestinal structure, the enteroscope comprising an outer tube for supporting the outside of the anus, an inner tube of the outer tube being slidably connected with a collection head for deep into the intestine for observation, one end of the collection head being fixedly connected with a connecting mechanism for pushing the collection head;

[0008] A sealing film is provided on the outer side of the collection head for sealing the connecting mechanism, and a sampling mechanism is provided in the sealing film for contacting and sampling the intestinal wall outside the sealing film.

[0009] Further, the connecting mechanism comprises a plurality of connecting rods, and an extension block and a fixing ball are arranged between adjacent connecting rods, the fixing ball is hingedly connected with the extension block, and the extension block is a deformable rubber block;

[0010] The connecting rod is internally provided with a collecting chamber, a transfer pipe is in communication between the collecting chamber and the sampling mechanism, and a negative pressure pipe is in communication with one side of the collecting chamber away from the sampling mechanism, and an electromagnetic valve is in communication with the negative pressure pipe.

[0011] Further, one end of the outer tube away from the collection head is provided with a mounting chamber for storing a sealing film, the mounting chamber is clamped with the outer tube, a plurality of extensible wrinkle layers are fixedly connected on the sealing film, the wrinkle layers are stacked and folded in the mounting chamber, a communication port is formed on one side of the mounting chamber close to the outer tube, and one end of the sealing film penetrates through the communication port and is fixedly connected with the collection head.

[0012] Further, a center rod is fixedly connected to one end of the collection head close to the outer tube, the diameter of the center rod is smaller than that of the collection head, and the extension block is further located between the center rod and the connecting rod and is fixedly connected with the center rod.

[0013] The sampling mechanism comprises an arc-shaped pressing rod, a rotating ball is hingedly connected to one end of the pressing rod, a plurality of transfer holes are formed in the rotating ball, and the other end of the pressing rod is fixedly connected to one end of the center rod close to the connecting rod; a groove corresponding to the rotating ball is formed on one side of the collection head close to the pressing rod, and a clamping block is rotatably arranged between the bottom of the sealing film and the rotating ball.

[0014] The transfer pipe is located in the pressing rod, one end of the transfer pipe is in communication with the inside of the rotating ball, the other end of the transfer pipe is in communication with the collecting chamber by penetrating through the center rod, the extension block and the connecting rod in sequence, and the transfer pipes corresponding to the pressing rods in different directions are respectively in communication with the collecting chambers of the connecting rods in different positions.

[0015] A sliding block is slidingly connected to the center rod, and a telescopic pull rod is connected between the sliding block and the pressing rod; a spring is connected between the sliding block and the collection head, and an electromagnet is fixedly connected to one side of the collection head close to the sliding block.

[0016] When the electromagnet is started, the spring is in a compressed state, the pressing rod is pulled by the pull rod and located in the groove, and the sealing film is located in the groove; when the electromagnet is turned off, the spring is in a normal stretched state, the pressing rod is pushed by the pull rod and located outside the groove, and the sealing film and the rotating ball are located outside the groove.

[0017] Further, a plurality of partition plates are fixedly connected to one end of the collection head close to the connecting rod, the pressing rod is located between adjacent partition plates, and the electromagnet and the sliding block are divided into different moving blocks with the partition plates as the center.

[0018] Further, an air bag is fixedly connected between the sealing film and the connecting rod, and an air pipe is in communication with one end of the air bag away from the connecting rod.

[0019] Further, the installation chamber stores lubricating liquid.

[0020] Further, the pressing rod is detachably connected with the center rod.

[0021] Further, the outer tube is fixedly connected with a button switch on the inner wall, the button switch is electrically connected with a control panel, and the control panel is electrically connected with an electric gate door for closing the communication port.

[0022] The diameter of the air bag is greater than the diameter of the connecting rod, and when the air bag passes the button switch, the button switch abuts against the air bag.

[0023] The control panel is used for inputting and storing the standard length of the connecting rod and the sampling depth at the current time, based on the number of times of starting the button switch at the current time, and based on the number of times of starting and the standard length, the pushing length at the current time is calculated, the pushing length is compared with the sampling depth, if the pushing length is greater than or equal to the sampling depth, a starting instruction is sent to the electric gate door; if the pushing length is less than the sampling depth, a maintaining instruction is sent to the electric gate door.

[0024] Further, a transparent glass layer is fixedly connected on the tube, and a scale line is marked on the connecting rod.

[0025] The above scheme has the following beneficial effects:

[0026] 1. In the use process, the enteroscope is used to confirm the deepening condition inside the intestinal tract, so as to ensure the sample collection accuracy of different positions in the sample collection process, reduce the error sample collection caused by too shallow or too deep deepening, and ensure the richness and accuracy of the sample.

[0027] 2. The closed film is used for isolation and protection, so as to reduce the stimulation to the intestinal tract in the collection process, thereby reducing the damage to the patient in the sampling process, providing rich sample support for early diagnosis, precise treatment and mechanism analysis of diseases, reducing the resistance of the patient, and facilitating the provision of rich sample support for early diagnosis, precise treatment and mechanism analysis of diseases.

[0028] 3. In the isolation process of the closed film, the sampling mechanism is used for sampling, so as to reduce the mixing interference of different positions, reduce the cross infection of samples in different positions, and provide basic conditions for preserving the activity and function of the flora.

[0029] Additional aspects and advantages of the application will be described in part below with reference to the description, some will become apparent from the description below, or will be understood by those skilled in the art through practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The isometric view of the device embodiment of the application for independently collecting intestinal microecological samples;

[0031] Figure 2 Figure 1 is a schematic view of the device for autonomous collection of intestinal microecological samples according to the present application;

[0032] Figure 3 Figure 1 is a schematic view of the device for autonomous collection of intestinal microecological samples according to the present application; Figure 2 Figure 1 is a schematic view of the device for autonomous collection of intestinal microecological samples according to the present application;

[0033] Figure 4 Figure 1 is a schematic view of the device for autonomous collection of intestinal microecological samples according to the present application; Figure 1 Figure 1 is a schematic view of the device for autonomous collection of intestinal microecological samples according to the present application;

[0034] Figure 5 Figure 1 is a schematic view of the device for autonomous collection of intestinal microecological samples according to the present application; Figure 4 Figure 1 is a schematic view of the device for autonomous collection of intestinal microecological samples according to the present application;

[0035] Figure 6 Figure 1 is a schematic view of the device for autonomous collection of intestinal microecological samples according to the present application; Figure 5 Figure 1 is a schematic view of the device for autonomous collection of intestinal microecological samples according to the present application.

[0036] The reference signs in the drawings of the specification comprise: 1, outer tube; 2, collection head; 20, central rod; 21, partition; 22, pressing rod; 23, rotating ball; 24, intermediate tube; 3, connecting rod; 30, collection chamber; 31, air bag; 32, air tube; 4, mounting chamber; 41, sealing membrane; 5, negative pressure tube; 51, electromagnetic valve; 6, sliding block; 61, pull rod. DETAILED DESCRIPTION

[0037] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] The following detailed description illustrates the specific implementation method:

[0041] As attached Figures 1 to 6 As shown: A device for autonomously collecting intestinal microecological samples includes an intestinal endoscope for observing the internal intestinal structure. In this embodiment, the intestinal endoscope includes, but is not limited to, an anoscope, a rectoscope, or an electronic endoscope. The intestinal endoscope includes an outer tube 1 for external support of the anus. A collection head 2 for deep observation inside the outer tube 1 is slidably fitted. One end of the collection head 2 is fixedly connected to a connecting mechanism for pushing the collection head 2.

[0042] The connecting mechanism includes several connecting rods 3, with an extension block and a fixed ball between adjacent connecting rods 3. The fixed ball is hinged to the extension block ball, and the extension block is a deformable rubber block. A collection chamber 30 is opened inside the connecting rod 3. In this embodiment, the space of the collection chamber 30 can store about 5-10g of fecal sample.

[0043] A sealing membrane 41 for sealing the connection mechanism is fitted onto the outer side of the sampling head 2. An installation chamber 4 for storing the sealing membrane 41 is located at the end of the outer tube 1 furthest from the sampling head 2. The installation chamber 4 is snapped into the outer tube 1. Several stretchable pleated layers are fixedly connected to the sealing membrane 41, and these pleated layers are stacked and folded inside the installation chamber 4. A connecting opening is opened on the side of the installation chamber 4 closest to the outer tube 1, and one end of the sealing membrane 41 passes through the connecting opening and is fixedly connected to the sampling head 2. Lubricating fluid is stored inside the installation chamber 4.

[0044] A central rod 20 is fixedly connected to one end of the collection head 2 near the outer tube 1. The diameter of the central rod 20 is smaller than the diameter of the collection head 2, and an extension block is located between the central rod 20 and the connecting rod 3. The extension block is fixedly connected to the central rod 20. A sampling mechanism is provided inside the sealing membrane 41 for extending out of the sealing membrane 41 to contact the intestinal wall for sampling. A transfer pipe 24 connects the collection chamber 30 and the sampling mechanism, and a negative pressure pipe 5 is connected to the side of the collection chamber 30 away from the sampling mechanism. A solenoid valve 51 is connected to each negative pressure pipe 5, and the solenoid valve 51 is located at the junction of the collection chamber 30 and the negative pressure pipe 5.

[0045] The sampling mechanism comprises an arc-shaped pressing rod 22, one end of which is hinged with a rotating ball 23, the rotating ball 23 is provided with a plurality of transfer holes, and the other end of the pressing rod 22 is fixedly connected with the center rod 20 close to one end of the connecting rod 3; the collecting head 2 is provided with a groove corresponding to the rotating ball 23 on the side close to the pressing rod 22, and a clamping block (not shown in the figure) is rotatably arranged between the bottom of the sealing film 41 and the rotating ball 23; a transfer pipe 24 is arranged in the pressing rod 22, one end of the transfer pipe 24 is in communication with the inside of the rotating ball 23, and the other end of the transfer pipe 24 is in communication with the collecting chamber 30 in sequence through the center rod 20, the extension block and the connecting rod 3; and the transfer pipes 24 corresponding to the pressing rods 22 in different directions are in communication with the collecting chambers 30 of the connecting rods 3 in different positions respectively; the center rod 20 is slidably provided with a sliding block 6, a telescopic pull rod 61 is connected between the sliding block 6 and the pressing rod 22, one end of the pull rod 61 is hinged with the sliding block 6, and the other end of the pull rod 61 is hinged with the pressing rod 22; a spring is connected between the sliding block 6 and the collecting head 2, and an electromagnet is fixedly connected to the side of the collecting head 2 close to the sliding block 6; when the electromagnet is started, the spring is in a compressed state, the pressing rod 22 is pulled by the pull rod 61 and located in the groove, and the sealing film 41 is located in the groove; when the electromagnet is turned off, the spring is in a normal extension state, the pressing rod 22 is pushed by the pull rod 61 and located outside the groove, and the sealing film 41 and the rotating ball 23 are located outside the groove.

[0046] In another embodiment, the pressing rod 22 is detachably connected with the center rod 20. By detachably connecting the pressing rod 22 with the center rod 20, a disposable sampling tool is formed in cooperation with the sealing film 41, which facilitates sampling of different patients and improves the safety of sampling process, i.e. reduces the pollution of samples by external bacteria and reduces the risk of cross-infection of different patients.

[0047] The specific implementation process is as follows:

[0048] Firstly, the intestinal tract is confirmed by the enteroscope to ensure the accuracy of sample collection in different positions during the sample collection process, to reduce the error sample collection caused by too shallow or too deep, and to ensure the richness and accuracy of the sample.

[0049] The flexible extension block and the fixed ball are clamped and fixed, so that different connecting rods 3 are connected according to the collected position in the intestinal tract during use, facilitating convenience during use. During specific use, according to the connected connecting rod 3, the next extension length connecting rod 3 is connected, the transfer tube 24 is connected with the collection chamber 30 on the connecting rod 3, and the negative pressure pipe 5 is connected with the collection chamber 30 on the connecting rod 3. Through the extended connecting rod 3, it is convenient to push the collection head 2 into the deeper intestinal tract for collection and sampling, and different collection chambers 30 for storing samples are provided to reduce the interference between different samples; according to the segmented collection chamber 30, the collection chamber 30 is matched with the depth of the body advancement, and the sample collection and processing of different intestinal positions are realized.

[0050] The closed film 41 is used for isolation and protection to reduce the stimulation of the intestinal tract during collection. The closed film 41 with sufficient length is placed in the installation chamber 4 through the accumulation and folding of the wrinkle layer to provide protection for the continuous delivery of the collection head 2. The closed film 41 is stored in advance to meet the needs of one patient at a time, reduce the contact between the connecting mechanism and the sampling mechanism and the intestinal tract in the body, and ensure the disinfection effect, thereby reducing the pollution of external bacteria to the sample in the body, and ensuring the accuracy and convenience of the sample. At the same time, the lubricating liquid is used to reduce the friction of the closed film 41 during movement in the intestinal tract, facilitate the pushing of the collection head 2 into the deep part of the intestinal tract, reduce the stimulation of the intestinal tract during deepening due to friction, and facilitate the sampling.

[0051] During sampling, the electromagnetic iron is controlled to adsorb and fix the sliding block 6. When the electromagnetic iron is closed, the sliding block 6 is pushed to move by the compressed spring, the sliding block 6 pushes the pull rod 61 and the pressure rod 22 to move, the pressure rod 22 rotates around the hinge between the pressure rod 22 and the center rod 20 to push the rotating ball 23 on the pressure rod 22 to drive the closed film 41 to contact the intestinal wall, after the rotating ball 23 extends, the negative pressure generated by the negative pressure pipe 5 sucks the adherent on the intestinal wall into the collection chamber 30 for storage, so as to realize separate collection and storage of samples at different positions of the intestinal tract. The collection chambers 30 in different connecting rods 3 are different to form different storage adjustments and retain the activity and function of the bacterial flora.

[0052] During the deepening of the collection head 2, the electromagnetic iron is started to drive the pull rod 61 and the pressure rod 22 to retract in the opposite direction, so that the rotating ball 23 on the pressure rod 22 drives the closed film 41 to be fixed in the groove, so as to reduce the mixing of samples at different positions by shielding the closed film 41, reduce the cross contamination of different samples, and improve the accuracy of the samples.

[0053] In another embodiment, the sampling head 2 is fixedly connected with a plurality of partitions 21 near one end of the connecting rod 3, the pressing rods 22 are located between adjacent partitions 21, and the electromagnet and the sliding block 6 are divided into different moving blocks with the partitions 21 as the center.

[0054] The specific implementation process is as follows: the partitions 21 are divided to form different isolation chambers, during the sample collection process, the single-direction pressing rod 22 is pushed by controlling the electromagnet in a single direction, so as to ensure the fixation of the other-direction pressing rod 22 to the sealing film 41, thereby reducing the mixing effect of samples at different positions, and improving the collection accuracy of the samples.

[0055] In still another embodiment, the sealing film 41 and the connecting rod 3 are both fixedly connected with air bags 31, and the air bags 31 are communicated with air tubes 32 away from the connecting rod 3. The inflation of the air bags 31 is controlled through the communication of the air tubes 32, so that the air bags 31 push the sealing film 41 to contact and support the outer tube 1 or the intestinal tract, thereby improving the stability of the rotating ball 23 during the pushing process, reducing the local pressing of the rotating ball 23 on the intestinal wall due to the patient's activity, and providing support stability and reducing the damage to the patient during the sampling process.

[0056] In some other embodiments, the outer tube 1 is fixedly connected with a transparent glass layer, and the connecting rod 3 is marked with scale lines. The transparent glass layer is used to facilitate the observation of the scale lines to determine the change of the depth, thereby facilitating the doctor to control the depth.

[0057] The outer tube 1 is fixedly connected with a button switch, the button switch is electrically connected with a control panel, the control panel is electrically connected with an electric gate for closing the communication port; the diameter of the air bag 31 is greater than the diameter of the connecting rod 3, when the air bag 31 passes through the button switch, the button switch is in contact with the air bag 31; the control panel is used to input and store the standard length of the connecting rod 3 and the sampling depth at the current time, based on the number of times of starting the button switch at the current time, and based on the number of times of starting and the standard length, the pushing length at the current time is calculated, the pushing length is compared with the sampling depth, if the pushing length is greater than or equal to the sampling depth, a starting instruction is sent to the electric gate; if the pushing length is less than the sampling depth, a maintaining instruction is sent to the electric gate.

[0058] For example, during the conveying process of the connecting rod 3, the pushing length of the connecting rod 3 into the body at the current time is obtained based on the number of times of starting, so as to control the starting of the electric gate, the sealing film 41 is clamped and fixed by the electric gate, so as to remind the doctor to stop conveying the connecting rod 3, and the sample at the target depth is collected and processed by controlling the pressing rod 22 to drive the rotating ball 23 to collect and sample the intestinal wall through the control of the electromagnet.

[0059] Obviously, the above-mentioned embodiments are only examples for clearly illustrating the present application, and are not intended to limit the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and also impossible to enumerate all the embodiments. The obvious changes or variations derived from the above description are still within the protection scope of the present application.

Claims

1. A device for autonomously collecting intestinal microecological samples, comprising an intestinal endoscope for observing the internal intestinal structure, the intestinal endoscope including an outer tube (1) for external support of the anus, and a collection head (2) for deep observation inside the outer tube (1), characterized in that, One end of the acquisition head (2) is fixedly connected to a connecting mechanism for pushing the acquisition head (2); The outer side of the collection head (2) is fitted with a sealing membrane (41) for sealing the connection mechanism, and the inner side of the sealing membrane (41) is fitted with a sampling mechanism for extending out of the sealing membrane (41) to contact the intestinal wall for sampling. The connecting mechanism includes several connecting rods (3), with an extension block and a fixed ball between adjacent connecting rods (3). The fixed ball is hinged to the extension block ball, and the extension block is a deformable rubber block. The connecting rod (3) has a collection chamber (30) inside. The collection chamber (30) is connected to the sampling mechanism by a transfer pipe (24). The side of the collection chamber (30) away from the sampling mechanism is connected to a negative pressure pipe (5). The negative pressure pipe (5) is connected to a solenoid valve (51). The solenoid valve (51) is located at the junction of the collection chamber (30) and the negative pressure pipe (5). The outer tube (1) is provided with an installation chamber (4) for storing the sealing membrane (41) at the end away from the collection head (2). The installation chamber (4) is snapped into the outer tube (1). Several stretchable pleated layers are fixedly connected to the sealing membrane (41). The pleated layers are stacked and folded in the installation chamber (4). The side of the installation chamber (4) near the outer tube (1) has a connecting port. One end of the sealing membrane (41) passes through the connecting port and is fixedly connected to the collection head (2).

2. The device for autonomously collecting intestinal microecological samples according to claim 1, characterized in that, A central rod (20) is fixedly connected to one end of the acquisition head (2) near the outer tube (1). The diameter of the central rod (20) is smaller than the diameter of the acquisition head (2), and the extension block is located between the central rod (20) and the connecting rod (3). The extension block is fixedly connected to the central rod (20). The sampling mechanism includes an arc-shaped pressure rod (22), one end of which is hinged to a rotating ball (23). The rotating ball (23) has several rotating holes. The other end of the pressure rod (22) is fixedly connected to the end of the central rod (20) near the connecting rod (3). The sampling head (2) has a groove corresponding to the rotating ball (23) on the side near the pressure rod (22). The bottom of the sealing membrane (41) is fitted with a locking block that rotates between it and the rotating ball (23). The transfer tube (24) is located inside the pressure rod (22). One end of the transfer tube (24) is connected to the inside of the rotating ball (23), and the other end of the transfer tube (24) passes through the central rod (20), the extension block and the connecting rod (3) in sequence and is connected to the collection chamber (30). The transfer tubes (24) corresponding to the pressure rods (22) in different positions are connected to the collection chambers (30) of the connecting rods (3) in different positions. A slider (6) is slidably fitted on the center rod (20), and a telescopic pull rod (61) is connected between the slider (6) and the pressure rod (22); a spring is connected between the slider (6) and the collection head (2), and an electromagnet is fixedly connected to the side of the collection head (2) near the slider (6); When the electromagnet is activated, the spring is in a compressed state, the pressure rod (22) is pulled by the tension rod (61) and is located in the groove, and the sealing membrane (41) is located in the groove; when the electromagnet is deactivated, the spring is in a normally extended state, the pressure rod (22) is pushed by the tension rod (61) and is located outside the groove, and the sealing membrane (41) and the rotating ball (23) are located outside the groove.

3. The device for autonomously collecting intestinal microecological samples according to claim 1, characterized in that, The end of the collecting head (2) near the connecting rod (3) is fixedly connected to several partitions (21), the pressure rod (22) is located between adjacent partitions (21), and the electromagnet and the slider (6) are divided into different moving blocks with the partitions (21) as the center.

4. The device for autonomously collecting intestinal microecological samples according to claim 2, characterized in that, An airbag (31) is fixedly connected between the sealing membrane (41) and the connecting rod (3), and an air tube (32) is connected to the end of the airbag (31) away from the connecting rod (3).

5. The device for autonomously collecting intestinal microecological samples according to claim 4, characterized in that, The installation chamber (4) contains lubricating fluid.

6. The device for autonomously collecting intestinal microecological samples according to claim 2, characterized in that, The pressure bar (22) is detachably connected to the center bar (20).

7. The device for autonomously collecting intestinal microecological samples according to claim 3, characterized in that, The inner wall of the outer tube (1) is fixedly connected to a push-button switch, which is electrically connected to a control panel. The control panel is electrically connected to an electric gate for closing the connection port. The diameter of the airbag (31) is larger than the diameter of the connecting rod (3). When the airbag (31) passes the button switch, the button switch abuts against the airbag (31). The control panel is used to input and store the standard length of the connecting rod (3) and the sampling depth at the current time. Based on the number of times the button switch is started at the current time, the push-in length at the current time is calculated based on the number of starts and the standard length. The push-in length is compared with the sampling depth. If the push-in length is greater than or equal to the sampling depth, a start command is sent to the power gate. If the push-in length is less than the sampling depth, a maintenance command is sent to the power gate.

8. The device for autonomously collecting intestinal microecological samples according to claim 4, characterized in that, A transparent glass layer is fixedly connected to the outer tube (1), and scale lines are engraved on the connecting rod (3).

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