A device for collecting and separating tissue samples

Abstract

The present invention discloses a device for collecting and separating tissue samples, which relates to the biomedical field and includes a shell and a cover. The cover is detachably mounted on top of the shell. A collection tube is provided on top of the cover, which is connected to the endoscope suction chamber. A suction tube is provided in the middle of the cover to provide suction inside the shell. A shielding ring is fixed to the middle of the shell, and a partition is fixed to the outside of the shielding ring. The device for collecting and separating tissue samples is connected to the collection tube via a sealing ring. The collection tube cooperates with the connecting port and the docking port to suck the sample into the collection box. The sealing ring can maintain a tight fit with the cover to ensure the sealing effect of the device during suction. The sealing ring can subsequently move upward to release the fit and rotate to switch the sample collection position, so that the collection tube can adjust the sample collection position while ensuring the sealing effect after the position adjustment, so that the suction of the device remains stable and avoids waste of suction.

Description

Technical Field

[0001] The present invention relates to the field of biomedical technology, in particular to a device for collecting and separating tissue samples. Background Art

[0002] In the biomedical field, endoscopic examination and treatment can be performed through minimally invasive technology. Tissues can be sucked out through the suction of the endoscope, and samples can be collected in conjunction with a collection and separation device to facilitate subsequent inspection of the samples. When collecting multiple pieces of tissue, multi-bin collection and storage can be used to avoid storage confusion.

[0003] The invention relates to a disposable tissue collector for endoscope suction, comprising a bottle body, a bottle cap, a gastroscope connecting catheter, and a suction device connecting catheter. The bottle cap is rotatably connected to the bottle body, the gastroscope connecting catheter is connected to the bottle cap, the suction device connecting catheter is inserted into the bottom of the bottle body, the bottom end of the gastroscope connecting catheter is flush with the bottle cap, the gastroscope connecting catheter is communicated with the bottle body, and the gastroscope connecting catheter, the suction device connecting catheter and the bottle cap are sealed. The lower part of the bottle body is a collection chamber, and the upper part of the bottle body is provided with a plurality of equally divided grids, wherein three-quarters of the continuous grids are collection grids, and a filter screen is provided at the bottom end of each collection grid and is integrally provided with the grid. The other quarter of the continuous grids are ventilation grids, and the ventilation grids and the collection grids are respectively connected to the gastroscope connecting catheter. The collector has a large collection capacity, and multiple collection grids can collect multiple specimens from the same patient, thereby avoiding the loss of specimens. 202011416705.3, a Chinese patent published on February 25, 2025) A tissue sample collection and separation device comprises a cup body, a cup cover and multiple inner cores; wherein, multiple inner core insertion ports are provided on the outer periphery of the cup body, and the inner cores are pluggable and inserted into the interior of the cup body through the inner core insertion ports; the cup cover is covered on the cup body to seal the cup body, and the cup cover can be rotated in the state of covering the cup body; a liquid inlet channel and a liquid outlet channel are provided on the cup cover, the liquid outlet channel is provided at the center position of the cup cover, and the liquid inlet channel is provided near the edge of the cup cover; by rotating the cup body, different inner cores are aligned with the liquid inlet channel, and the above-mentioned biopsy tissue sample collection and separation device, by rotating the cup body, different inner cores are aligned with the liquid inlet channel, and tissue samples from different parts can be collected in different inner cores, and corresponding collection of tissue samples from different parts can be realized; and the design of the pluggable inner core facilitates the removal and detection of tissue samples after collection.

[0004] Although the current tissue sample collection and separation device can realize the classified collection of samples, when adjusting the sample collection switch, it is switched directly by rotation. Due to the movable setting, there is a gap at the rotating connection of the device, and air leakage is likely to occur in the gap, affecting the suction of the device. When switching the sample collection, the suction is continuously supplied, which can easily cause the sample to be sucked into the separation gap, causing the sample to fall. In addition, if the sample needs to be removed after the sample is collected, the operation of the device needs to be stopped. The removal of a single sample will affect the absorption of samples at other positions, reducing the flexibility of the device. Summary of the Invention

[0005] The object of the present invention is to provide a device for collecting and separating tissue samples to solve the problem raised in the above-mentioned background technology that although the current tissue sample collection and separation device can realize the classified collection of samples, when the sample collection is switched and adjusted, the switching is performed directly by rotation. Due to the movable setting, there is a gap at the rotating connection of the device, which is prone to air leakage and affects the suction of the device. When the sample collection is switched, the suction is continuously supplied, which easily causes the sample to be sucked into the separation gap, causing the sample to fall. In addition, if the sample needs to be removed after the sample is collected, the operation of the device needs to be stopped.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a device for collecting and separating tissue samples, comprising a shell and a cover body, the cover body being detachably mounted on the top of the shell body, a collection tube being provided above the cover body, the collection tube being connected to the endoscope suction chamber, and a suction tube being provided in the middle of the cover body to provide suction for the shell body, a shielding ring being fixed in the middle of the shell body, and a partition plate being fixed on the outside of the shielding ring, the partition plate cooperating with the shielding ring to divide the shell body into a uniform space, and a collection box being provided on the inner side of the partition plate, a filter plate for separating samples being provided inside the collection box, and a docking mechanism being provided between the collection box and the shell body, the collection box being connected to the shell body through the docking mechanism, a docking interface being provided on the lower surface of the cover body, the docking interface and the collection box being arranged correspondingly, and a sealing connection mechanism being provided above the docking interface, the docking interface being connected to the collection tube through the sealing connection mechanism, and a movable adjustment mechanism being connected below the suction tube.

[0007] To further optimize the technical solution, a threaded connection is formed between the cover and the shell, and the outer side of the cover is designed as a regular polygonal structure to assist in controlling the rotation of the cover.

[0008] Further optimizing this technical solution, the docking mechanism includes a mounting member and a mounting groove;

[0009] The mounting member is provided at the lower portion of the collection box, and the front and rear ends of the mounting member respectively pass through the front and rear ends of the collection box, and a rotation connection is formed between the mounting member and the collection box;

[0010] The mounting groove is provided on the surface of the shielding ring, and a threaded connection is formed between the mounting groove and the mounting piece.

[0011] To further optimize the technical solution, a sealing gasket is provided on the outside of the collection box, and the sealing gasket seals the connection gap between the collection box and the shell after they are connected.

[0012] Further optimizing the technical solution, the sealing connection mechanism includes a sealing ring, a communication port and a pressing mechanism;

[0013] The sealing ring is fixed below the collecting tube and is designed in an annular structure, and the sealing ring and the cover body are movably connected up and down;

[0014] The communication port is provided inside the sealing ring, and the communication port and the opening of the collecting pipe are provided correspondingly, and the communication port is located above the docking port;

[0015] The downward pressure mechanism is arranged above the sealing ring to provide downward pressure for the sealing ring, so that the connection between the collecting pipe and the docking port remains tight.

[0016] To further optimize this technical solution, the pressing mechanism includes a spring column and a slide plate;

[0017] A spring column is fixed above the sealing ring;

[0018] The slide plate is fixed above the spring column, and the upper surface of the slide plate is fitted with the inner wall of the cover body.

[0019] To further optimize the technical solution, a sealing block is fixed in the middle of the suction pipe, an auxiliary spring is connected above the sealing block, and a connecting frame is fixed on the outside of the sealing block, and the sealing block is connected to the sealing ring through the connecting frame.

[0020] Further optimizing the technical solution, the movable adjustment mechanism includes a telescopic mechanism, a connecting pipe and a docking adsorption mechanism;

[0021] The telescopic mechanism is arranged below the suction pipe and adapted to the up and down movement of the suction pipe;

[0022] The connecting pipe is arranged below the telescopic mechanism, and a rotation connection is formed between the connecting pipe and the shielding ring;

[0023] The docking adsorption mechanism is arranged at the end of the connecting tube to control the connection between the connecting tube and the space below the collecting box.

[0024] Further optimizing the technical solution, the telescopic mechanism includes a connecting plate, a second telescopic tube and a movable rod;

[0025] The connecting plates are respectively fixed to the lower end of the suction pipe and the upper end of the connecting pipe;

[0026] A second telescopic tube is provided at the connection between the suction tube and the connecting tube to connect the suction tube and the connecting tube;

[0027] The movable rod passes through the connecting plates and forms an up-and-down sliding structure.

[0028] Further optimizing the technical solution, the docking adsorption mechanism includes a fitting head, a first telescopic tube, a return spring and a suction port;

[0029] The fitting head is arranged below the connecting pipe and is arranged horizontally, and the outer end of the fitting head fits the inner wall of the shielding ring;

[0030] A first telescopic tube is provided at the connection between the laminating head and the connecting tube;

[0031] The return spring is arranged on the outside of the fitting head to provide thrust for the fitting head, so that the fitting head and the blocking ring are kept in contact with each other;

[0032] The suction port is opened at the bottom of the shielding ring, and the suction port and the collecting box are arranged correspondingly, and the suction port and the fitting head are connected to form a connecting structure.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The sealing ring and the collection tube are connected, and the collection tube cooperates with the connecting port and the docking port to suck the sample into the collection box, and the sealing ring can maintain a tight fit with the cover body to ensure the sealing effect of the device during suction. The sealing ring can then be moved upward to release the fit and rotate to switch the sample collection position, so that the collection tube can adjust the sample collection position while ensuring the sealing effect after the position adjustment, so that the suction force of the device remains stable and avoids waste of suction force.

[0035] The shell is divided into a uniform space by the shielding ring and the partition plate. After the use position of the collection box is switched, the unused collection box or the collection box that has completed collection can be taken out from the shell separately without affecting the use of other collection boxes. New collection boxes can also be installed, making the use of the device more flexible.

[0036] The uniform distribution of the space inside the shell reduces the suction space of the suction tube, so that the suction force can be effectively utilized. When the position of the collection tube is adjusted, the suction tube can be rotated, and the docking of the fitting head and the suction port can be adjusted synchronously to suck the samples into different collection boxes for collection and separation.

[0037] The collection box is installed inside the shell by rotating the mounting piece, and after the collection box is installed, it can be combined with the sealing gasket to maintain its sealing effect. Subsequently, the single collection box can be taken out by rotating the mounting piece to process the sample, thereby increasing the overall sealing effect of the device.

[0038] The second telescopic tube is provided so that the suction tube can move upward together with the sealing ring without affecting the position of the connecting tube during the movement. At the same time, the movable rod on the outer side of the second telescopic tube can stably transmit the rotational power of the suction tube to the fitting head, driving the fitting head to rotate synchronously to adjust the fitting position of the fitting head. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0040] Figure 2 It is a bottom view of the cover structure of the present invention.

[0041] Figure 3 It is a schematic diagram of the main cross-sectional structure of the cover body of the present invention.

[0042] Figure 4 It is a schematic diagram of the three-dimensional structure of the sealing ring of the present invention.

[0043] Figure 5 It is a schematic diagram of the three-dimensional structure of the suction tube of the present invention.

[0044] Figure 6 It is a schematic diagram of the top structure of the present invention.

[0045] Figure 7 It is a schematic diagram of the top view of the shell structure of the present invention.

[0046] Figure 8 It is a schematic diagram of the three-dimensional structure of the shell of the present invention.

[0047] Figure 9 It is a schematic diagram of the three-dimensional structure of the collection box of the present invention.

[0048] Figure 10 It is a schematic diagram of the main cross-sectional structure of the shell of the present invention.

[0049] In the figure: 1. Shell; 2. Cover; 3. Collection tube; 4. Suction tube; 5. Sealing ring; 6. Connecting port; 7. Docking port; 8. Spring column; 9. Slide plate; 10. Sealing block; 11. Auxiliary spring; 12. Connecting frame; 13. Connecting tube; 14. Fitting head; 15. First telescopic tube; 16. Return spring; 17. Connecting plate; 18. Second telescopic tube; 19. Movable rod; 20. Shielding ring; 21. Partition plate; 22. Collection box; 23. Filter plate; 24. Suction port; 25. Mounting part; 26. Mounting groove; 27. Sealing gasket. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] Example 1: The present invention provides the following technical solutions: a device for collecting and separating tissue samples, such as Figure 1-7 As shown, it includes a shell 1 and a cover body 2, the cover body 2 is detachably mounted on the top of the shell 1, a collecting tube 3 is arranged on the top of the cover body 2, the collecting tube 3 is connected to the endoscope suction chamber, and a suction tube 4 is arranged in the middle of the cover body 2 to provide suction for the shell 1, a shielding ring 20 is fixed in the middle of the shell 1, and a partition plate 21 is fixed on the outside of the shielding ring 20, the partition plate 21 cooperates with the shielding ring 20 to divide the shell 1 into a uniform space, and a collecting box 22 is arranged on the inner side of the partition plate 21, the interior of the collecting box 22 is provided with a filter plate 23 for separating samples, and a docking mechanism is provided between the collecting box 22 and the shell 1, the collecting box 22 is connected to the shell 1 through the docking mechanism, a docking port 7 is provided on the lower surface of the cover body 2, the docking port 7 and the collecting box 22 are arranged corresponding to each other, and a sealing connection mechanism is provided above the docking port 7, the docking port 7 is connected to the collecting tube 3 through the sealing connection mechanism, and a movable adjustment mechanism is connected to the bottom of the suction tube 4.

[0052] When in use, the collection tube 3 can be connected to the endoscope suction chamber, and the suction tube 4 can be connected to the suction mechanism to generate a negative pressure adsorption force under the corresponding collection box 22, so that the sample is sucked into the collection tube 3, and the sample falls to the surface of the filter plate 23, and the sample is filtered and separated. The liquid can be discharged through the suction tube 4, and the sample remains on the surface of the filter plate 23. The collection box 22 can be taken out from the shell 1 to process the sample. The space outside a single collection box 22 is relatively independent, and the removal of a single collection box 22 does not affect the collection work of other collection boxes 22.

[0053] Example 2: Based on Example 1, Figure 8-10As shown, it is further disclosed that a threaded connection is formed between the cover body 2 and the shell body 1, and the outer side of the cover body 2 is designed as a regular polygonal structure to assist in controlling the rotation of the cover body 2. The docking mechanism includes a mounting member 25 and a mounting groove 26. The mounting member 25 is arranged at the lower part of the collection box 22, and the front and rear ends of the mounting member 25 respectively pass through the front and rear ends of the collection box 22, and a rotational connection is formed between the mounting member 25 and the collection box 22. The mounting groove 26 is opened on the surface of the shielding ring 20, and a threaded connection is formed between the mounting groove 26 and the mounting member 25. A sealing gasket 27 is provided on the outside of the collection box 22. After the collection box 22 and the shell body 1 are connected, the sealing gasket 27 seals the connection gap between them.

[0054] The cover body 2 can be connected to and disassembled from the shell body 1 by rotation. When installing the collection box 22, the collection box 22 can be inserted into the interior of the shell body 1 so that the mounting piece 25 and the mounting groove 26 are opposite to each other, and then the mounting piece 25 is rotated to rotate the mounting piece 25 in the collection box 22. At the same time, the mounting piece 25 and the mounting groove 26 are threadedly connected to drive the collection box 22 to move horizontally, so that the sealing gasket 27 and the shell body 1 remain in close contact, thereby realizing the installation of the collection box 22 and ensuring the sealing effect of the installation point so that the subsequent suction force remains stable.

[0055] Example 3: Based on Example 1, Figure 2-7As shown, the sealing connection mechanism further discloses that it includes a sealing ring 5, a communication port 6 and a pressing mechanism. The sealing ring 5 is fixed below the collecting tube 3, and the sealing ring 5 is designed in an annular structure, and the sealing ring 5 and the cover body 2 form an upper and lower movable connection. The communication port 6 is opened inside the sealing ring 5, and the communication port 6 and the opening of the collecting tube 3 are correspondingly arranged, and the communication port 6 is located above the docking port 7. The pressing mechanism is arranged above the sealing ring 5 to provide downward pressure for the sealing ring 5, so that the connection between the collecting tube 3 and the docking port 7 remains tight. The pressing mechanism includes a spring column 8 and a slide plate 9. The spring column 8 is fixed Above the sealing ring 5, the slide plate 9 is fixed above the spring column 8, and the upper surface of the slide plate 9 is fitted with the inner wall of the cover body 2. A sealing block 10 is fixed to the middle of the suction pipe 4. An auxiliary spring 11 is connected to the top of the sealing block 10, and a connecting frame 12 is fixed to the outside of the sealing block 10. The sealing block 10 is connected to the sealing ring 5 through the connecting frame 12. The movable adjustment mechanism includes a telescopic mechanism, a connecting pipe 13 and a docking adsorption mechanism. The telescopic mechanism is arranged below the suction pipe 4 to adapt to the up and down movement of the suction pipe 4. The connecting pipe 13 is arranged below the telescopic mechanism, and the connecting pipe 13 and the shielding ring 20 constitutes a rotational connection, a docking adsorption mechanism, which is arranged at the end of the connecting tube 13 to control the connection between the connecting tube 13 and the space below the collecting box 22, and the telescopic mechanism includes a connecting plate 17, a second telescopic tube 18 and a movable rod 19. The connecting plate 17 is fixed to the lower end of the suction tube 4 and the upper end of the connecting tube 13, respectively. The second telescopic tube 18 is arranged at the connection between the suction tube 4 and the connecting tube 13 to connect the suction tube 4 and the connecting tube 13. The movable rod 19 passes through the connecting plate 17 and the connecting plate 17 to form an up and down sliding structure. The docking adsorption mechanism includes a fitting head 14, a first telescopic tube 15, a reset The spring 16 and the suction port 24, the fitting head 14, are arranged below the connecting tube 13, and the fitting head 14 is arranged horizontally, and the outer end of the fitting head 14 fits with the inner wall of the baffle ring 20, the first telescopic tube 15 is arranged at the connection between the fitting head 14 and the connecting tube 13, the return spring 16 is arranged on the outside of the fitting head 14 to provide thrust for the fitting head 14, so that the fitting head 14 and the baffle ring 20 remain in contact, the suction port 24 is opened at the bottom of the baffle ring 20, and the suction port 24 and the collection box 22 are arranged correspondingly, and the suction port 24 and the fitting head 14 are connected to form a connecting structure.

[0056] During suction, the sealing ring 5 maintains a seal with the cover body 2 under the downward pressure of the spring column 8, and the suction tube 4 maintains a seal with the cover body 2 through the sealing block 10, so that the suction force is transmitted stably. When it is necessary to switch the use of the collection box 22, the suction tube 4 can be pulled upward to drive the sealing block 10 to move upward. The sealing block 10 drives the sealing ring 5 to move upward through the connecting frame 12. At the same time, the suction tube 4 pulls the second telescopic tube 18 to move, and then the suction tube 4 is rotated to synchronously drive the sealing ring 5 and the collection tube 3 to rotate, and it is adjusted to the top of the other collection box 22, and the connecting port 6 and the docking port 7 are aligned. At the same time, when the suction tube 4 rotates, the connecting tube 13 and the fitting head 14 will be driven to rotate through the movable rod 19. A sliding structure similar to the movable rod 19 can also be set between the fitting head 14 and the connecting tube 13 to make the movement of the fitting head 14 more stable. After the fitting head 14 moves, the docking position of the fitting head 14 and the suction port 24 will be switched, thereby providing suction control for the collection boxes 22 at different positions. After adjustment, the suction tube 4 is released, and the auxiliary spring 11 and the spring column 8 push the sealing block 10 and the sealing ring 5 downward to seal the connection, so that the subsequent suction force remains stable and avoids waste of suction force due to leakage.

[0057] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0058] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "dispose," "install," and other conjunctions should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0059] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for collecting and separating tissue samples, comprising a housing (1) and a cover (2), wherein the cover (2) is detachably mounted on top of the housing (1); Its characteristics are: A collecting tube (3) is provided above the cover body (2), the collecting tube (3) is connected to the endoscope suction chamber, and a suction tube (4) is provided in the middle of the cover body (2), a blocking ring (20) is fixed in the middle of the shell (1), and a partition plate (21) is fixed on the outside of the blocking ring (20), the partition plate (21) cooperates with the blocking ring (20) to divide the shell (1) into a uniform space, and a collecting box (22) is provided on the inner side of the partition plate (21), a filter plate (23) for separating samples is provided inside the collecting box (22), and a docking mechanism is provided between the collecting box (22) and the shell (1), a docking port (7) is provided on the lower surface of the cover body (2), the docking port (7) and the collecting box (22) are provided correspondingly, and a sealing connection mechanism is provided above the docking port (7), the docking port (7) is connected to the collecting tube (3) through the sealing connection mechanism, and a movable adjustment mechanism is connected to the bottom of the suction tube (4); The sealing connection mechanism comprises a sealing ring (5), a communication port (6) and a pressing mechanism; The sealing ring (5) is fixed below the collecting tube (3), and the sealing ring (5) is designed to be annular in structure, and the sealing ring (5) and the cover body (2) are connected in an upper and lower movable manner; A communication port (6) is provided inside the sealing ring (5), and the communication port (6) and the opening of the collecting pipe (3) are provided correspondingly, and the communication port (6) is located above the docking port (7); A downward pressure mechanism is provided above the sealing ring (5) to provide downward pressure to the sealing ring (5), thereby maintaining a tight connection between the collecting pipe (3) and the docking port (7); The movable adjustment mechanism comprises a telescopic mechanism, a connecting pipe (13) and a docking adsorption mechanism; A telescopic mechanism is provided below the suction pipe (4) and adapted to the up and down movement of the suction pipe (4); A connecting tube (13) is provided below the telescopic mechanism, and a rotational connection is formed between the connecting tube (13) and the blocking ring (20); The docking adsorption mechanism is provided at the end of the connecting tube (13) to control the connection between the connecting tube (13) and the space below the collecting box (22).

2. The tissue sample collection and separation device according to claim 1, characterized in that: The cover body (2) and the housing (1) are connected by a thread, and the outer side of the cover body (2) is designed as a regular polygonal structure to assist in controlling the rotation of the cover body (2).

3. The device for collecting and separating tissue samples according to claim 1, characterized in that: The docking mechanism includes a mounting member (25) and a mounting groove (26); A mounting member (25) is provided at the lower portion of the collection box (22), and the front and rear ends of the mounting member (25) respectively penetrate the front and rear ends of the collection box (22), and a rotational connection is formed between the mounting member (25) and the collection box (22); The mounting groove (26) is provided on the surface of the shielding ring (20), and a threaded connection is formed between the mounting groove (26) and the mounting member (25).

4. The device for collecting and separating tissue samples according to claim 3, characterized in that: A sealing gasket (27) is provided on the outside of the collection box (22), and after the collection box (22) and the housing (1) are connected, the sealing gasket (27) seals the connection gap therebetween.

5. The device for collecting and separating tissue samples according to claim 1, characterized in that: The pressing mechanism comprises a spring column (8) and a slide plate (9); A spring column (8) is fixed above the sealing ring (5); The slide plate (9) is fixed above the spring column (8), and the upper surface of the slide plate (9) is arranged to fit the inner wall of the cover body (2).

6. The device for collecting and separating tissue samples according to claim 5, characterized in that: A sealing block (10) is fixed in the middle of the suction pipe (4), an auxiliary spring (11) is connected above the sealing block (10), and a connecting frame (12) is fixed on the outside of the sealing block (10), and the sealing block (10) is connected to the sealing ring (5) via the connecting frame (12).

7. The device for collecting and separating tissue samples according to claim 6, characterized in that: The telescopic mechanism comprises a connecting plate (17), a second telescopic tube (18) and a movable rod (19); A connecting plate (17) is fixed to the lower end of the suction pipe (4) and the upper end of the connecting pipe (13); A second telescopic tube (18) is provided at the connection between the suction tube (4) and the connecting tube (13) to connect the suction tube (4) and the connecting tube (13); The movable rod (19) passes through the connecting disk (17) and forms an up-and-down sliding structure between the connecting disks (17).

8. The device for collecting and separating tissue samples according to claim 7, characterized in that: The docking adsorption mechanism comprises a bonding head (14), a first telescopic tube (15), a return spring (16) and a suction port (24); A fitting head (14) is provided below the connecting tube (13), and the fitting head (14) is provided horizontally, and an outer end of the fitting head (14) fits with an inner wall of the blocking ring (20); A first telescopic tube (15) is provided at the connection between the laminating head (14) and the connecting tube (13); A return spring (16) is provided on the outside of the fitting head (14) to provide a thrust for the fitting head (14) so ​​as to maintain fitting between the fitting head (14) and the blocking ring (20); The suction port (24) is provided at the bottom of the shielding ring (20), and the suction port (24) and the collection box (22) are arranged correspondingly, and the suction port (24) and the laminating head (14) are connected to form a communication structure.

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