Fecal sample processing collector

Abstract

The present invention relates to a feces sample processing collector, comprising a collection group and a testing group, the collection group comprising a collection tube and a feces collection piece, a collection chamber of the collection tube having a filter screen at the bottom, a constricted neck at the bottom, a filter chamber connected to the collection chamber via the filter screen in the constricted neck, a through-port at the bottom of the filter chamber, a sealing component at the through-port, the testing group comprising a sample collection tube, a tail pipe opening of the sample collection tube can be sleeved on the constricted neck and connected to the through-port, the sealing component comprising a valve core member slidingly guided and matched on the through-port for controlling the opening and closing of the through-port, the valve core member being matched with a valve core spring driving the valve core member to close the through-port, the valve core member having an opening operation part for driving the valve core member to overcome the valve core spring to open the through-port when the tail pipe opening of the sample collection tube is sleeved on the constricted neck. The operation is neat and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of biological detection equipment, in particular to an apparatus for processing and collecting feces samples. Background Art

[0002] Traditional feces collectors have only two parts: a test tube and a sealing cover. The sealing cover is equipped with a collection spoon, and the upper end of the sealing cover can be opened. When using, the collected material is placed in the test tube for dilution, and the upper end of the sealing cover is opened to drop the sample to be tested onto the test strip. This often results in impurities in the test tube not being filtered out, thus affecting the test results.

[0003] In order to solve the above technical problems, people have improved and designed stool sample processing and sampling instruments, such as the "Stool Tester" disclosed in the Chinese patent document CN 201711348914.7, whose main structure is: it is composed of a collection group and a test group, the collection group has a collection container, the collection container has a collection chamber inside, the top cover of the collection chamber is provided with a joint cover and a stool collection piece, and the collection chamber is provided with a filter and a through hole near the bottom, the test group has a test container, the test container has a test chamber inside, a funnel, a gasket and an outlet are provided at the bottom of the test chamber, and an extrusion device and a bottom cover are installed outside the outlet, whereby the test group uses the extrusion device to flow out or block the solution to be examined under the microscope, thereby improving convenience and being more hygienic, and the funnel and the gasket prevent the fine substances in the fixed volume specimen from mixing with the supernatant during squeezing, thereby preventing the concentration of the fine substances in the specimen to be observed from being diluted during squeezing. However, the stool tester has the following defects: 1. The bottom through hole of the collection group is pre-sealed with a diaphragm and a tail cover, and then the tail cover is unscrewed and the diaphragm is peeled off to achieve connection with the inspection container of the inspection group to collect samples; during the collection operation, the through hole is connected to the inspection container after the diaphragm is peeled off, and there is a risk of sample liquid dripping and contaminating the operator at the through hole. Similarly, when withdrawing from the inspection container, there is also a problem of residual liquid flowing out of the through hole, which can easily cause sensory discomfort to the operator; 2. The stool collection piece is short, which makes operation inconvenient. Summary of the invention

[0004] Purpose of the invention: To overcome the defects of the prior art, the present invention provides a stool sample processing and collecting device which is neat and convenient to operate.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A stool sample processing and collecting device, comprising a collecting group and a testing group,

[0007] The collection group includes a collection tube with a collection chamber, a top end of the collection tube is provided with a feces collection piece, the feces collection piece extends into the collection chamber of the collection tube, a filter screen is provided in the bottom of the collection chamber of the collection tube, the bottom of the collection tube has an inner neck, a filter chamber connected to the collection chamber through the filter screen is provided in the inner neck, the bottom of the filter chamber has a through opening, and a sealing component is provided at the through opening,

[0008] The inspection group includes a sample collection tube with a collection chamber, one end of the sample collection tube is a tail tube mouth, and the other end of the sample collection tube is a sample drip outlet, the tail tube mouth is equipped with a closing cover for opening and closing the collection chamber, the tail tube mouth of the sample collection tube can be sleeved on the inner neck and connected with the through port, and it is characterized in that: the closing component includes a valve core part that is slidingly guided and matched on the through port to control the opening and closing of the through port, the valve core part is matched with a valve core spring that drives the valve core part to close the through port, and the valve core part has an opening operating part that drives the valve core part to overcome the valve core spring to open the through port when the tail tube mouth of the sample collection tube is sleeved on the inner neck.

[0009] By adopting the above technical solution, when in use, after the feces collection is completed, the feces collection piece is extended into the collection chamber of the collection tube, and the PBS collection liquid is injected into the collection chamber to achieve mixed filtration. The port is blocked by the valve core piece of the closing component, and the tail pipe mouth of the sample collection tube is sleeved on the inner neck. At the same time, the valve core piece is driven to overcome the valve core spring to open the port, so that the filtration chamber and the sample collection tube are connected. The filtered liquid can enter the sample collection tube, and the collection group connected with the sample collection tube is placed in the centrifugal device for operation. After the sample collection is completed, the sample collection tube is pulled off the inner neck, and the valve core piece is driven by the valve core spring to re-block the port. During the operation, the port is opened and closed by the valve core piece, which can effectively reduce or avoid the leakage of liquid through the port when the sample collection tube is sleeved and disconnected from the inner neck, thereby making the operation more convenient and neat.

[0010] Preferably, the valve core member includes a cylindrical body, the cylindrical body sliding guide is matched in the through port, one end of the cylindrical body extends into the filter chamber, the other end of the cylindrical body has a liquid outlet connected to the inner cavity of the cylindrical body, the end of the cylindrical body extending into the filter chamber is provided with a valve core disk that closes the upper port of the inner cavity of the cylindrical body, the valve core disk has an annular sealing surface, the inner side of the through port of the filter chamber is provided with a valve seat surface that matches the sealing surface, the circumferential surface of the cylindrical body is provided with a liquid hole connected to the inner cavity of the cylindrical body, and the valve core spring drives the valve core The part tends to extend out of the opening with the liquid hole on the cylindrical body and the sealing surface is sealed with the valve seat surface to form a closed opening. The opening operation part is arranged at one end of the liquid outlet of the cylindrical body. The opening operation part is a convex ring extending along the outer diameter of the cylindrical body. The tail pipe opening of the sample collection tube is provided with a boss that pushes and cooperates with the convex ring to drive the part of the cylindrical body with the liquid hole to extend into the filter chamber and the sealing surface is separated from the valve seat surface to form an open opening. The sample collection tube can be locked on the inner neck to form a top pressure valve core part in an open opening state. Under this structural design, when the port is closed, under the action of the valve core spring, the sealing surface of the valve core disk and the valve seat surface cooperate to seal, and the liquid hole of the cylindrical body of the valve core member extends out of the port, realizing the port closure; when the tail pipe mouth of the sample collection tube is sleeved in the process of inner necking, the boss pushes the convex ring, the cylindrical body moves axially, the sealing surface of the valve core disk disengages from the valve seat surface, and the liquid hole gradually enters the filter chamber until the sample collection tube is sleeved in place, the valve core member is in a fully open port state, the sample collection tube is locked, the filter chamber is connected with the sample collection tube through the port, and the valve core spring stores energy; after the sample is collected, the sample collection tube is disengaged from the inner neck, and the valve core spring drives the valve core member to close the port; the valve core member of this structure has the advantages of simple structure and stable and reliable operation, the cylindrical body and the port realize guiding cooperation, and the liquid hole is arranged on the cylindrical body, which has the advantage of reliable control of the opening and closing of the port.

[0011] Preferably, the valve core spring is sleeved outside the cylindrical body, one end of the valve core spring is supported on the convex ring, and the other end of the valve core spring is supported on the inner neck end. Under this structural design, the valve core spring is externally placed, which is convenient for setting and positioning and installation of the valve core spring, and has the advantage of compact structure.

[0012] Preferably, the outer periphery of the convex ring is provided with a protrusion, and an annular groove is formed by the protrusion. The valve core spring is positioned and matched in the annular groove, and a liquid absorption pad is provided in the annular groove. Under this structural design, the protrusion can better position the valve core spring, and the protrusion has a blocking effect, which can effectively prevent liquid leakage. Even if liquid enters the outside of the cylindrical body through the liquid hole during operation, it is blocked by the protrusion and absorbed by the liquid absorption pad, ensuring cleanliness and hygiene during the entire operation process.

[0013] Preferably, a plurality of elastic clamps are distributed along the circumferential direction on the outer peripheral side of the inner neck, and a clamping opening is provided between the elastic clamp and the outer peripheral wall of the inner neck, and the tail of the sample collection tube can be inserted into and withdrawn from the clamping opening. The tail of the sample collection tube is inserted into the clamping opening to lock the sample collection tube on the inner neck to achieve the top pressure valve core member in an open port state. Under this structural design, after the tail of the sample collection tube is pushed into place, it enters the clamping opening to realize the locking connection between the sample collection tube and the inner neck, which has the advantages of simple locking and unlocking operations and simple structure.

[0014] Preferably, the outer circumferential side of the valve core disc has positioning fins arranged at intervals along the circumferential direction, and the positioning fins are slidably guided and matched in the filter chamber, and a liquid-passing interval for liquid to pass through is formed between the positioning fins. Under this structural design, the valve core disc and the filter chamber are guided and matched, so that the movement of the valve core is reliable.

[0015] Preferably, the inner neck is provided with a protective cap which is sleeved on the inner neck. With this structural design, the valve core is prevented from being accidentally pressed to open the opening, and the use is safer and more reliable.

[0016] Preferably, the feces collection piece is provided with an injection channel, one end of the injection channel is a liquid inlet opened on the end of the feces collection piece extending into the collection chamber, and the other end of the injection channel is an injection port located at the end of the feces collection piece extending out of the collection chamber, and the injection port is provided with a rubber cover, and a syringe can be detachably plugged in the injection port. Under this structural design, the operation of injecting PBS collection liquid later is realized, and the operation is more neat and hygienic, and the syringe design can be pre-plugged, and the syringe plays the role of extending the feces collection piece.

[0017] Preferably, an annular stop rib and a positioning rib are raised inside the tail end of the outer barrel of the syringe, and a plurality of positioning ribs are distributed at intervals along the circumferential direction at the tail end of the outer barrel of the syringe, the positioning rib is located in front of the annular stop rib, the positioning rib and the annular stop rib are spaced apart and form a positioning spacing groove, and a limiting rib extending toward the annular stop rib is provided at one end in the length direction of the positioning rib, and a plurality of stop fins are distributed circumferentially on the piston rod of the syringe, the front side of the stop fin is a slope surface, and the rear side of the stop fin cooperates with the annular stop rib to stop, and the stop fin can be placed in the positioning spacing groove by rotating the piston rod of the syringe, and the stop fin is limited in the rotation direction of the piston rod of the syringe by the limiting rib. Under this structural design, the syringe pre-installed on the feces collection piece can be prevented from being misoperated, and the piston rod of the syringe can be reliably positioned with the outer barrel of the syringe through the stop wing to prevent the piston rod of the syringe from swinging, making the holding operation of the feces collection piece more stable. In addition, the stop wing of the syringe is restricted in the positioning interval groove to prevent the piston rod of the syringe from being accidentally pushed and pulled out. After completing the feces collection, the piston rod of the syringe is rotated so that the stop wing is located in the interval between adjacent positioning ribs, and the piston rod of the syringe can be pushed to complete the PBS collection liquid injection operation.

[0018] Preferably, the bottom of the injection port has a needle nozzle positioning hole for inserting the needle connector of the syringe, and the outer barrel of the syringe is positioned and plugged into the injection port. Under this structural design, the connection between the syringe and the defecation collection piece is stable and reliable.

[0019] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a diagram showing the coordination status of the collection group and the inspection group of the stool sample processing collector according to a specific embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of a collection group of a stool sample processing and collection device according to a specific embodiment of the present invention;

[0022] Figure 3 This is a diagram showing the coordination between the collection group and the syringe of the stool sample processing collector according to a specific embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a valve core member in a specific embodiment of the present invention;

[0024] Figure 5 This is a diagram showing the defecation taking device and the syringe being separated in a specific embodiment of the present invention;

[0025] Figure 6 This is a diagram showing the coordination between the defecation taking device and the syringe in a specific embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the piston rod structure of a syringe in a specific embodiment of the present invention;

[0027] Figure 8 It is a schematic diagram of the outer barrel structure of a syringe according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0028] See attached Figures 1 to 8 The feces sample processing and collecting device disclosed in the present invention comprises a collecting group 1 and a testing group 2.

[0029] The collection group 1 includes a collection tube 11 with a collection chamber 111, a top end of the collection tube 11 is provided with a feces collection piece 12, a joint cover 11-1 is screwed on the top end of the collection tube 11, a mounting threaded hole for the feces collection piece 12 to be screwed, the feces collection piece 12 is threadedly matched with the mounting threaded hole, the feces collection piece 12 extends into the collection chamber 111 of the collection tube 11, a liquid injection channel 121 is provided in the feces collection piece 12, one end of the liquid injection channel 121 is a liquid inlet 1211 opened on one end of the feces collection piece 12 extending into the collection chamber 111, and the other end of the liquid injection channel 121 is a liquid injection port 1212 located at one end of the feces collection piece 12 extending out of the collection chamber 111, and the liquid injection port 1212 is provided at one end of the feces collection piece 12 extending out of the collection chamber 111. The collecting tube 11 is provided with a rubber cover 123, and a filter screen 13 is provided at the bottom of the collecting chamber 111 of the collecting tube 11. The collecting tube 11 has an inner neck 15 at the bottom, and the inner neck 15 is fixedly plugged into the bottom of the collecting tube 11 and presses the filter screen 13 into the collecting tube 11. The inner neck 15 has a filter chamber 151 connected to the collecting chamber through the filter screen. The filter chamber 151 has a through-port 152 at the bottom, and a closing component is provided at the through-port 152. The closing component includes a valve core member 16 that is slidably guided and matched with the through-port 152 for controlling the opening and closing of the through-port. The valve core member 16 is matched with a valve core spring 17 that drives the valve core member 16 to close the through-port 152, and the valve core member 16 has an opening operation part;

[0030] The inspection group 2 includes a sample collection tube 21 with a collection chamber, one end of the sample collection tube 21 is a tail tube mouth, and the other end of the sample collection tube 21 is a sample drip outlet, the drip outlet is covered with a tail cap 22, and the tail tube mouth is equipped with a closing cover (not shown in the figure) for opening and closing the collection chamber. The tail tube mouth of the sample collection tube 21 can be sleeved on the inner neck 15 and connected to the through port 152. When the tail tube mouth of the sample collection tube 21 is sleeved on the inner neck 15, the opening operating part is triggered to drive the valve core member 16 to overcome the valve core spring 17 to open the through port 152. When in use, after the feces collection is completed, the stool collection piece is extended into the collection chamber of the collection tube, and the PBS collection liquid is injected into the collection chamber to achieve mixed filtration. The port is blocked by the valve core piece of the closing component, and the tail pipe mouth of the sample collection tube is sleeved on the inner neck. At the same time, the valve core piece is driven to overcome the valve core spring to open the port, so that the filtration chamber is connected with the sample collection tube, and the filtered liquid can enter the sample collection tube. The collection group connected with the sample collection tube is placed in the centrifugal device for operation. After the sample collection is completed, the sample collection tube is pulled off the inner neck, and the valve core piece re-blocks the port under the drive of the valve core spring. During the operation, the port is opened and closed by the valve core piece, which can effectively reduce or avoid the leakage of liquid through the port when the sample collection tube is sleeved and disconnected from the inner neck, thereby making the operation more convenient and neat.

[0031] In this specific embodiment, the valve core member 16 includes a cylindrical body 161, the cylindrical body 161 is slidably guided and matched in the through-port 152, one end of the cylindrical body 161 extends into the filter chamber 151, and the other end of the cylindrical body 161 has a liquid outlet 1611 connected to the inner cavity of the cylindrical body 161, and the end of the cylindrical body 161 extending into the filter chamber 151 is provided with a valve core disk 162 that closes the upper port of the inner cavity of the cylindrical body 161, and the valve core disk 162 has an annular sealing surface 1621, and the inner side of the through-port 152 of the filter chamber 151 is provided with a valve seat surface 1521 that matches the sealing surface 1621, and the circumferential surface of the cylindrical body 161 is provided with a liquid hole 1612 connected to the inner cavity of the cylindrical body 161, and the valve core spring 17 drives the valve The core piece 16 tends to extend the portion of the cylindrical body 161 with the liquid hole 1612 through the opening 152, and the sealing surface 1621 is sealed with the valve seat surface 1521 to form a closed opening 152. The opening operation part is arranged at one end of the liquid outlet 1611 of the cylindrical body 161, and the opening operation part is a convex ring 163 extending along the outer diameter of the cylindrical body 161. The tail pipe mouth of the sample collection tube 21 is provided with a boss 212 which pushes and cooperates with the convex ring 163 to drive the portion of the cylindrical body 161 with the liquid hole 1612 to extend into the filter chamber 151 and the sealing surface 1621 is disengaged from the valve seat surface 1521 to form an open opening 152. The sample collection tube 21 can be locked on the inner neck 15 to form a state of pressing the valve core piece 16 to open the opening 152. When the port is closed, under the action of the valve core spring, the sealing surface of the valve core disk and the valve seat surface cooperate to seal, and the liquid hole of the cylindrical body of the valve core member extends out of the port. At the same time, there is also a sealing effect between the circumferential surface of the cylindrical body and the port, thereby achieving reliable sealing and closure of the port by the valve core member; when the tail pipe mouth of the sample collection tube is sleeved in the inner necking process, the boss pushes the convex ring, the cylindrical body moves axially, the sealing surface of the valve core disk disengages from the valve seat surface, and the liquid hole gradually enters the filter chamber until the sample collection tube is sleeved in place, the valve core member is in a fully open port state, the sample collection tube is locked, the filter chamber is connected with the sample collection tube through the port, and the valve core spring stores energy; after the sample is collected, the sample collection tube is disengaged from the inner necking, and the valve core spring drives the valve core member to close the port; the valve core member of this structure has the advantages of simple structure and stable and reliable operation, the cylindrical body and the port are guided and matched, and the liquid hole is arranged on the cylindrical body, which has the advantage of reliable control of the opening and closing of the port. The inner neck 15 is provided with a protective cap 18 which is sleeved on the inner neck. This prevents the valve core from being accidentally pressed to open the opening, making it safer and more reliable to use; and the protective cap is put on later to further make the operation clean and tidy. Moreover, the annular surface 1613 of the cylindrical body 161 on the side of the liquid hole 1612 away from the valve core disk 162 is sealed with the opening 152 to prevent the sample liquid from leaking out. Moreover, the sample collection tube 21 has a pre-sleeved portion (such as a pre-sleeved portion) which is pre-sleeved on the inner neck 15 when the boss 212 is attached to the convex ring 163. Figure 5As shown in the figure), under this design, on the one hand, it is convenient for the sample collection tube to be sleeved on the inner neck; on the other hand, when the sample collection tube is pulled out, after the port is closed, the sample collection tube is still sleeved on the inner neck, ensuring that no dripping residual liquid is formed on the valve core part, making the use process cleaner and tidier.

[0032] The valve core spring 17 is sleeved outside the cylindrical body 161, one end of the valve core spring 7 is supported on the convex ring 163, and the other end of the valve core spring 17 is supported on the end of the inner neck 15. The valve core spring is externally arranged, which is convenient for setting and positioning and installation of the valve core spring, and has the advantage of compact structure.

[0033] The outer periphery of the convex ring 163 is provided with a protrusion 1631, and an annular groove 1632 is formed by the protrusion 1631. The valve core spring 17 is positioned and matched in the annular groove 1632, and a liquid absorption pad 1633 is provided in the annular groove 1632. The protrusion can better position the valve core spring, and the protrusion has a blocking effect, which can effectively prevent liquid leakage. Even if there is liquid entering the outer side of the cylindrical body through the liquid hole during operation, it is blocked by the protrusion and absorbed by the liquid absorption pad, ensuring cleanliness and hygiene during the entire operation process.

[0034] In this specific embodiment, the outer peripheral side of the inner neck 15 is in the shape of a stepped shaft, and a plurality of elastic clamps 153 are distributed along the circumferential direction on the outer peripheral side of the inner neck 15. A shaft shoulder 154 is formed on the outer peripheral side of the inner neck 15, and the elastic clamp 153 is formed on the shaft shoulder 154. A clamping opening 155 is provided between the elastic clamp 153 and the outer peripheral wall of the inner neck 15, and the tail of the sample collection tube 21 can be inserted into and withdrawn from the clamping opening 155. The tail of the sample collection tube 21 is inserted into the clamping opening 155 to lock the sample collection tube on the inner neck 15, so as to press the valve core member 16 to be in an open port state. After the tail of the sample collection tube is pushed into place, it enters the clamping opening to realize the locking connection between the sample collection tube and the inner neck, which has the advantages of simple locking and unlocking operations and simple structure.

[0035] The outer circumference of the valve core disc 162 has positioning fins 1622 arranged at intervals along the circumferential direction. The positioning fins 1622 are slidably guided and matched in the filter chamber 151. A liquid-passing gap 1623 for liquid to pass through is formed between the positioning fins 1622. The valve core disc and the filter chamber are guided and matched, so that the movement of the valve core is reliable.

[0036] In this specific embodiment, the injection port 1212 is detachably plugged with a syringe 3; the bottom of the injection port 1212 has a needle nozzle positioning hole 12121 for inserting the needle connector 311 of the syringe 3, and the outer barrel 31 of the syringe 3 is positioned and plugged into the injection port 1212. The operation of injecting PBS to collect liquid is more tidy and sanitary, and the syringe design can be pre-plugged, and the syringe plays the role of extending the stool collection piece.

[0037] An annular stop rib 312 and a positioning rib 313 are protruded in the rear end of the outer barrel 31 of the syringe 3. A plurality of positioning ribs 313 are distributed at intervals along the circumferential direction at the rear end of the outer barrel 311 of the syringe 3. The positioning rib 313 is located in front of the annular stop rib 312. The positioning rib 313 and the annular stop rib 312 are spaced apart to form a positioning spacing groove 314. A limiting rib 315 extending toward the annular stop rib 312 is provided at one end in the length direction of the positioning rib 313. A plurality of stop fins 321 are distributed circumferentially on the piston rod 32 of the syringe 3. The front side of the stop fin 321 is a slope surface 3211. The rear side of the stop fin 321 is stop-matched with the annular stop rib 312. The stop fin 321 can be placed in the positioning spacing groove 314 by rotating the piston rod 32 of the syringe 3. The stop fin 321 is limited in the rotation direction of the piston rod 32 of the syringe 3 by the limiting rib 315. The syringe pre-inserted on the feces collection piece can be prevented from being misoperated, and the piston rod of the syringe can be reliably positioned with the outer barrel of the syringe through the stop wing to prevent the piston rod of the syringe from swinging, making the holding operation of the feces collection piece more stable. In addition, the stop wing of the syringe is restricted in the positioning interval groove to prevent the piston rod of the syringe from being accidentally pushed and pulled out. After completing the feces collection, the piston rod of the syringe is rotated so that the stop wing is located in the interval between adjacent positioning ribs, and the piston rod of the syringe can be pushed to complete the PBS collection liquid injection operation.

Claims

1. A stool sample processing and collecting device, comprising a collecting group and a testing group, The collection group includes a collection tube with a collection chamber, a top end of the collection tube is provided with a feces collection piece, the feces collection piece extends into the collection chamber of the collection tube, a filter screen is provided in the bottom of the collection chamber of the collection tube, the bottom of the collection tube has an inner neck, a filter chamber connected to the collection chamber through the filter screen is provided in the inner neck, the bottom of the filter chamber has a through opening, and a sealing component is provided at the through opening, The test set includes a sample collection tube with a collection chamber, one end of the sample collection tube is a tail tube opening, the other end of the sample collection tube is a sample drop outlet, the tail tube opening is equipped with a sealing cover for opening and closing the collection chamber, the tail tube opening of the sample collection tube can be sleeved on the inner neck and connected to the through port, and is characterized in that: The closure assembly includes a valve core member that is slidingly guided and matched on the through port for controlling the opening and closing of the through port, the valve core member is matched with a valve core spring that drives the valve core member to close the through port, and the valve core member has an opening operating part that drives the valve core member to overcome the valve core spring to open the through port when the tail pipe mouth of the sample collection tube is sleeved on the inner neck; the valve core member includes a cylindrical main body, the sliding guide of the cylindrical main body is matched in the through port, one end of the cylindrical main body extends into the filter chamber, and the other end of the cylindrical main body has a liquid outlet connected to the inner cavity of the cylindrical main body, and the end of the cylindrical main body extending into the filter chamber is provided with a valve core disk that closes the upper port of the inner cavity of the cylindrical main body, the valve core disk has an annular sealing surface, and the inner side of the through port of the filter chamber is provided with a valve seat surface that cooperates with the sealing surface, and the circumferential surface of the cylindrical main body is provided with a liquid through hole connected to the inner cavity of the cylindrical main body, and the valve core spring drives the valve core The part tends to extend out of the opening with the liquid hole on the cylindrical body and the sealing surface is sealed with the valve seat surface to form a closed opening. The opening operation part is arranged at one end of the liquid outlet of the cylindrical body. The opening operation part is a convex ring extending along the outer diameter of the cylindrical body. The tail pipe mouth of the sample collection tube is provided with a boss which is pushed and matched with the convex ring to drive the part of the cylindrical body with the liquid hole to extend into the filter chamber and the sealing surface is separated from the valve seat surface to form an open opening. The sample collection tube can be locked on the inner neck to form a top pressure valve core part in an open opening state; an injection channel is provided in the defecation collection part, one port of the injection channel is a liquid inlet opened on the end of the defecation collection part extending into the collection chamber, and the other port of the injection channel is an injection port located at one end of the defecation collection part extending out of the collection chamber. The injection port is provided with a rubber cover, and a syringe can be detachably plugged in the injection port.

2. The stool sample processing and collecting device according to claim 1, characterized in that: The valve core spring is sleeved outside the cylindrical main body, one end of the valve core spring is supported on the convex ring, and the other end of the valve core spring is supported on the inner neck end.

3. The stool sample processing and collecting device according to claim 2, characterized in that: The outer periphery of the convex ring is provided with a protrusion, and an annular groove is formed by the protrusion. The valve core spring is positioned and matched in the annular groove, and a liquid absorption pad is arranged in the annular groove.

4. The stool sample processing and collecting device according to claim 2, characterized in that: The outer circumferential side of the valve core disc is provided with positioning fins arranged at intervals along the circumferential direction. The positioning fins are slidably guided and matched in the filter chamber, and liquid-passing intervals for liquid to pass through are formed between the positioning fins.

5. The stool sample processing and collecting device according to claim 1, 2 or 3, characterized in that: A plurality of elastic clamps are distributed along the circumferential direction on the outer peripheral side of the inner neck, and a clamping opening is provided between the elastic clamp and the outer peripheral wall of the inner neck. The tail of the sample collecting tube can be inserted into and withdrawn from the clamping opening. The tail of the sample collecting tube is inserted into the clamping opening so that the sample collecting tube is locked on the inner neck to press the valve core component to be in an open port state.

6. The stool sample processing and collecting device according to claim 1, characterized in that: The inner-shrink neck is provided with a protective cap which is sleeved on the inner-shrink neck.

7. The stool sample processing and collecting device according to claim 1, characterized in that: An annular stop rib and a positioning rib are raised inside the tail end of the outer barrel of the syringe. A plurality of positioning ribs are distributed at intervals along the circumferential direction at the tail end of the outer barrel of the syringe. The positioning rib is located in front of the annular stop rib. The positioning rib and the annular stop rib are spaced apart to form a positioning spacing groove. A limiting rib extending toward the annular stop rib is provided at one end in the length direction of the positioning rib. A plurality of stop fins are distributed circumferentially on the piston rod of the syringe. The front side of the stop fin is a slope surface, and the rear side of the stop fin cooperates with the annular stop rib to stop. The stop fin can be placed in the positioning spacing groove by rotating the piston rod of the syringe. The stop fin is limited in the rotation direction of the piston rod of the syringe by the limiting rib.

8. The stool sample processing and collecting device according to claim 1, characterized in that: The bottom of the liquid injection port is provided with a needle nozzle positioning hole for inserting a needle connector of a syringe, and the outer tube of the syringe is positioned and plugged into the liquid injection port.

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