CN107340151B

CN107340151B - Quantitative fecal sample collection device and collection method

Info

Publication number: CN107340151B
Application number: CN201710754181.0A
Authority: CN
Inventors: 徐威; 鲁海峰; 张华�; 李强; 崔晓楠
Original assignee: Hangzhou Tongchuang Yuecheng Gene Technology Co ltd
Current assignee: Hangzhou Tongchuang Yuecheng Gene Technology Co ltd
Priority date: 2017-08-29
Filing date: 2017-08-29
Publication date: 2023-06-09
Anticipated expiration: 2037-08-29
Also published as: CN107340151A

Abstract

The invention discloses a fecal sample quantitative collection device and a collection method, wherein the fecal sample quantitative collection device comprises a collection tube (1), a collection tube cap (2) and a quantitative collector (6), the collection tube cap (2) comprises a tube cap end part and a tube cap top part which are used for connecting the collection tube (1), the tube cap end part is provided with a first internal thread (11) which is in threaded connection with a first external thread and a middle internal thread (12) with a second diameter, the tube cap top part is provided with an end part through hole (13) with a third diameter and a liquid inlet valve (14), and the end part through hole (13) is sequentially communicated with the middle internal thread (12) and the first internal thread (11); the first diameter is greater than the second diameter, which is greater than the third diameter; when the diameter-variable push rod (5) filters and pushes the fecal sample to the closed end (9) through the filter screen (17), the processor (8) controls the stirring speed of the stirring unit (10) and controls the liquid inlet amount of the liquid inlet valve (14) based on the concentration signal detected by the concentration sensor (7).

Description

Quantitative fecal sample collection device and collection method

Technical Field

The invention relates to the technical field of medical test detection devices, in particular to a fecal sample quantitative collection device and a collection method.

Background

The detection of the feces has special significance for diagnosing certain diseases, but the conventionally used sample collection box is quite simple, is inconvenient for the retention of the feces sample, and needs direct contact operation by hands during detection and sampling, so that not only is the inconvenience for a detected person and a detected person caused, but also pollution sources are easily formed due to the smell of the feces sample or pathogens contained in the feces sample, the inspector needs to bear the smell of the sample, and the feces sample cannot be quantified and is not suitable for quantitative inspection. The conventional sampler has the following defects that the needs of clinical application cannot be met: the hand-holding part of the traditional sampler is short and thick, the hand-holding is inconvenient, and hands are easy to dirty; secondly, the traditional sampler utilizes a small spoon structure to sample, the excrement quantity required by sampling can be achieved only by repeated collection for many times, the operation process is complex, and psychological pressure is easy to generate for users; thirdly, the feces collected by the traditional sampler are not easy to separate and cannot fully react with the lysate, so that follow-up work of scientific researchers is not facilitated; fourth, the traditional sampler adopts single screw threads or buckles for assembly and fixation, so that pollution caused by leakage of excrement carried by the mixed pyrolysis liquid cannot be effectively prevented; (V) most of traditional samplers are made of cheap transparent plastics, are easy to break under stress, and can bring psychological pressure to users easily when in use; sixth, the traditional sampler is not provided with a excrement collecting box, so that excrement and urine can not be separated to pollute the excrement, and serious inconvenience is brought to excrement collection work; seventh, the conventional sampling is random, and the collection amount cannot be guaranteed, so that too much or too little is caused.

Patent document 1 discloses a fecal specimen collection cup, which comprises a cup body, a top cover arranged at the upper part of the cup body and a sampling spoon penetrating through the top cover and extending into the cup body, wherein a baffle is arranged in the cup body, two sides of the baffle are in line contact with the inner wall of the cup body, and a filter screen is arranged at the lower end of the baffle; the inner cavity of the cup body is isolated from the stirring cavity and the detection cavity by the filter screen and the partition board, and a test hole is formed in the position, corresponding to the detection cavity, of the top cover. The sample is diluted, mixed evenly and filtered after the patent is collected, and the mixed liquid medicine only enters the detection cavity through the filter screen at the bottom, so that the mixed liquid medicine is relatively uniform, but the sample cannot be quantitatively collected, the liquid medicine and the sample cannot be automatically and accurately proportioned and are not suitable for storage and transportation, the sample cannot be conveniently and sanitarily sampled, and the safety and reliability are poor and secondary pollution is easy.

Patent document 2 discloses a feces collection device, which comprises a sample storage bottle, a bottom cover, a front cover and a blocking cover, wherein one end of the sample storage bottle is sleeved with a U-shaped sealing sleeve, a feces collection rod with a spiral groove in the bottom cover penetrates through the bottom of the U-shaped sealing sleeve and extends into the sample storage bottle, the outer wall of the bottom cover is connected with the end part of the sample storage bottle, the bottom is provided with the front cover of a liquid discharge pipe, a sealing ring is arranged in the bottom of the front cover, the outer wall of the front cover is connected with the other end part of the sample storage bottle, the outlet of the liquid discharge pipe is a through hole, the blocking cover is connected outside the liquid discharge pipe, and a sealing gasket is arranged between the bottom of the blocking cover and the outlet of the liquid discharge pipe. The spiral groove of the collecting rod and the U-shaped sealing sleeve are arranged, so that the change amplitude of the stool quantity to be detected is small each time, but the collecting of the preset quantity can only be fixed, the quantitative collecting of various preset quantities can not be realized, and the liquid medicine and the sample can not be automatically and accurately proportioned and are not suitable for storage and transportation.

Patent document 3 discloses a excrement and urine ration collection bottle, including bottle lid cover, rubber lid, transparent plastic body and bottle seat, be equipped with four symmetrical pipes on the rubber lid, be equipped with the recess on the pipe hypomere wall, be equipped with the pillar in the pipe, the pillar hypomere is equipped with the bulge loop, the pillar upper end is equipped with the clamp plate, four symmetrical pipe hypomere outside edges are equipped with a circular draw-in groove, be equipped with discoid arch in the circular draw-in groove, be equipped with the sleeve pipe that the bore size reduces gradually on the discoid arch, rubber lid central authorities are equipped with the intercommunication cavity, the intercommunication cavity hypomere is equipped with threaded connection, be equipped with hollow pipe on the threaded connection, hollow pipe hypomere is equipped with cylindrical collection chamber, be equipped with the piston piece in the cylindrical collection chamber, be equipped with the piston stick on the piston piece, the piston stick is worn to pass hollow pipe, piston stick upper segment is equipped with the draw-in groove, be equipped with elasticity positioning arm in the pipe, be equipped with the scale on the transparent plastic body, rubber lid edge is equipped with the water filling port, be equipped with the elastic sealing membrane on the water filling port, transparent plastic body hypomere is equipped with the funnel, the filter screen, the funnel hypomere is equipped with delivery port. This patent is little to environmental pollution when carrying out just appearance inspection, convenient operation health, and can quantitative collection excrement and urine, but this patent can't liquid medicine and sample mix ratio and unsuitable save and transportation automatically and accurately, and sampling operation is complicated, and the reliability is poor.

Prior art literature

Patent literature

Patent document 1: chinese patent publication CN204214676U number

Patent document 2: chinese patent publication CN2493921a

Patent document 3: chinese patent publication CN203191221U number

Disclosure of Invention

Problems to be solved by the invention

As described above, the present invention addresses the above-described drawbacks of the prior art by providing a portable fecal sample quantitative collection device. The fecal sample quantitative collection device is convenient to use, can quantitatively collect fecal samples, is suitable for storage and transportation due to automatic and accurate proportioning of liquid medicine and samples, is simple and convenient to use and sanitary, and can avoid secondary pollution.

Solution to the problem

The present inventors have made intensive studies in order to achieve the above object, and specifically, the present invention provides a fecal sample quantitative collection device including a collection tube, a collection cap, and a quantitative collector.

The collecting tube comprises a concentration sensor for detecting the concentration of the fecal sample, a processor, a closed end and an open end, wherein the open end is provided with a first external thread with a first diameter, and the closed end is provided with a stirring unit.

The collecting pipe cap comprises a pipe cap end part and a pipe cap top part, wherein the pipe cap end part is used for connecting the collecting pipe, the pipe cap end part is provided with a first internal thread in threaded connection with the first external thread and a middle internal thread with a second diameter, the pipe cap top part is provided with an end part through hole with a third diameter and a liquid inlet valve, and the end part through hole is sequentially communicated with the middle internal thread and the first internal thread.

The quantitative collector comprises an inner pipe part with a large diameter end and a small diameter end, a reducing push rod movably arranged at the inner pipe part and a filter screen arranged at the large diameter end of the inner pipe part, wherein the small diameter end of the inner pipe part is provided with a second external thread which is in threaded connection with the middle internal thread, the reducing push rod comprises a large diameter part and a small diameter part which are respectively accommodated at the large diameter end and the small diameter end, the small diameter part is connected with the end through hole in a sliding manner, the large diameter part is tightly contacted with the large diameter end and can slide in the large diameter end, the first diameter is larger than the second diameter, and the second diameter is larger than the third diameter.

When the reducing push rod filters and pushes the excrement to the closed end through the filter screen, the processor controls the stirring speed of the stirring unit and controls the liquid inlet amount of the liquid inlet valve based on the concentration signal detected by the concentration sensor.

In the fecal sample quantitative collection device, the top of the pipe cap comprises a pneumatic valve for adjusting the air pressure and a pressure sensor for measuring the pressure signal in the collection pipe, and a processor connected with the pressure sensor and the pneumatic valve controls the pneumatic valve based on the pressure signal.

In the fecal sample quantitative collection device, the collection device comprises a collection tray for containing feces, and a triangular handheld part extends outwards from one side of the upper end of the collection tray.

In the fecal sample quantitative collection device, the liquid inlet valve is connected with the liquid inlet pipe to convey liquid to the closed end, a filter container for filtering out the fecal sample after stirring is arranged on the periphery of the stirring unit, and the filter container allows the fecal sample smaller than a preset threshold size to be filtered out from the inside of the filter container to the closed end.

In the fecal sample quantitative collection device, the collection tube cap and/or the quantitative collector are made of PVC materials.

In the fecal sample quantitative collection device, the large diameter end of the inner tube part and/or the small diameter part of the reducing push rod are provided with scales.

In the fecal sample quantitative collection device, a first sealing ring is arranged between the collection tube and the collection tube cap, and a second sealing ring is arranged between the inner tube and the collection tube cap.

In the fecal sample quantitative collection device, the reducing push rod is a piston push rod, wherein the large-diameter part is a piston head.

In the fecal sample quantitative collection device, anti-skid patterns are arranged on the periphery of the collection tube cap, a handle is arranged at the top end of the small-diameter part, and a predetermined amount of pyrolysis liquid is input into the liquid inlet valve.

In the fecal sample quantitative collection device, the processor is a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), an analog circuit or a digital circuit, and comprises a memory, wherein the memory comprises one or more read-only memory (ROM), random Access Memory (RAM), flash memory or electrically erasable programmable read-only memory (EEPROM).

According to another aspect of the present invention, a collecting method using the fecal sample quantitative collecting device includes the steps of:

the quantitative collector is inserted into the excrement, and the reducing push rod moves upwards relative to the inner pipe part to suck a preset amount of excrement to the large-diameter end.

The quantitative collector is placed in the collecting pipe, the first internal thread is connected with the first external thread in a threaded mode, the middle internal thread is connected with the second external thread in a threaded mode, and the collecting pipe cap is connected with the quantitative collector and the collecting pipe.

The reducing push rod filters and pushes the excrement to the closed end through the filter screen, the processor controls the stirring unit to stir the excrement sample at a preset stirring speed, and the liquid inlet amount of the liquid inlet valve is controlled based on a concentration signal detected by the concentration sensor.

The foregoing description is only an overview of the technical solutions of the present invention, to the extent that it can be implemented according to the content of the specification by those skilled in the art, and to make the above-mentioned and other objects, features and advantages of the present invention more obvious, the following description is given by way of example of the present invention.

Drawings

Fig. 1 is a schematic structural view showing a fecal sample quantitative collection device according to an embodiment of the present invention.

Fig. 2 is a schematic structural view showing a fecal sample quantitative collection device according to another embodiment of the present invention.

Fig. 3 shows a schematic step diagram of an acquisition method using a fecal sample quantitative acquisition device according to an embodiment of the present invention.

Symbol description

1. Collecting tube

2. Collecting pipe cap

3. Inner tube portion

4. Diameter-variable push rod

5. Collecting tray

6. Quantitative collector

7. Concentration sensor

8. Processor and method for controlling the same

9. Closed end

10. Stirring unit

11. First internal thread

12. Middle internal thread

13. End through hole

14. Liquid inlet valve

15. Large diameter end

16. Small diameter end

17. Filter screen

18. Large diameter portion

19. Small diameter portion

20. Air pressure valve

21. Pressure sensor

22. Liquid inlet pipe

23. Filtering container

Detailed Description

Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

It should be noted that certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will understand that a person may refer to the same component by different names. The description and claims do not identify differences in terms of components, but rather differences in terms of the functionality of the components. As used throughout the specification and claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description hereinafter sets forth a preferred embodiment for practicing the invention, but is not intended to limit the scope of the invention, as the description proceeds with reference to the general principles of the description. The scope of the invention is defined by the appended claims.

For the purpose of facilitating an understanding of the embodiments of the invention, reference will now be made to the drawings of several embodiments illustrated in the drawings, and the accompanying drawings are not to be taken as limiting the embodiments of the invention.

In particular to a fecal sample quantitative collection device as shown in figure 1. The fecal sample quantitative collection device comprises a collection tube 1, a collection tube cap 2 and a quantitative collector 6.

The collecting tube 1 comprises a concentration sensor 7 for detecting the concentration of a fecal sample, a processor 8, a closed end 9 and an open end, wherein the open end is provided with a first external thread with a first diameter, and the closed end 9 is provided with a stirring unit 10.

The collecting pipe cap 2 comprises a pipe cap end part and a pipe cap top part, wherein the pipe cap end part is used for connecting the collecting pipe 1, the pipe cap end part is provided with a first internal thread 11 which is in threaded connection with the first external thread and a middle internal thread 12 with a second diameter, the pipe cap top part is provided with an end part through hole 13 with a third diameter and a liquid inlet valve 14, and the end part through hole 13 is sequentially communicated with the middle internal thread 12 and the first internal thread 11.

The quantitative collector 6 comprises an inner pipe part 3 with a large diameter end 15 and a small diameter end 16, a reducing push rod 4 movably arranged at the inner pipe part 3 and a filter screen 17 arranged at the large diameter end 15, the small diameter end 16 is provided with a second external thread which is in threaded connection with the middle internal thread 12, the reducing push rod 4 comprises a large diameter part 18 and a small diameter part 19 which are respectively accommodated at the large diameter end 15 and the small diameter end 16, the small diameter part 19 is connected with the end through hole 13 in a sliding manner, the large diameter part 18 is tightly contacted with the large diameter end 15 and can slide in the large diameter end 15, the first diameter is larger than the second diameter, and the second diameter is larger than the third diameter.

When the diameter-variable push rod 4 filters and pushes the fecal sample to the closed end 9 through the filter screen 17, the processor 8 controls the stirring speed of the stirring unit 10 and controls the liquid intake amount of the liquid intake valve 14 based on the concentration signal detected by the concentration sensor 7.

The quantitative fecal sample collecting device can collect a larger amount of fecal samples compared with the traditional feces taking device by arranging the quantitative collector 6, and the sampling process is quick and complete without repeated operation, thereby improving the collecting efficiency and reducing the psychological pressure of users; the collecting pipe 1, the collecting pipe cap 2 and the quantitative collector 6 are connected by screw threads, so that the collecting pipe can be conveniently detached and installed, the waterproof performance is good, the problem of leakage of a pyrolysis liquid and a fecal sample in the transportation process is effectively prevented, and the collecting pipe is safe and sanitary; the collecting tube 1 and the liquid inlet valve 14 are arranged separately, so that the defect that the collecting device in the prior art cannot be added with reagent solution is avoided, reagent solution such as corrosive lysate and the like is prevented from contacting skin to the greatest extent, the lysate is prevented from being unnecessarily polluted, further, the excrement sample quantitative collecting device controls the stirring speed of the stirring unit 10 through the processor 8 and controls the liquid inlet amount of the liquid inlet valve 14 based on the concentration signal detected by the concentration sensor 7, so that excrement samples with expected concentration can be conveniently obtained, and the excrement sample quantitative collecting device is safe, reliable, sanitary and convenient.

In a preferred embodiment of the fecal sample quantitative collection device of the present invention, the top of the tube cap comprises a pneumatic valve 20 for adjusting the air pressure and a pressure sensor 21 for measuring the pressure signal in the collection tube, and the processor 8 connected to the pressure sensor 21 and the pneumatic valve 20 controls the pneumatic valve 20 based on the pressure signal. According to the invention, the air pressure is automatically regulated by the processor, so that the defect that the excrement sample is not pushed smoothly or the excrement sample is pushed in error due to the air pressure can be avoided, and the detection precision of the excrement sample is ensured.

In a preferred embodiment of the fecal sample quantitative collection device of the present invention, the collection device comprises a collection tray 5 for holding fecal sample, and a triangular hand-held part extends outwards from one side of the upper end of the collection tray 5.

In a preferred embodiment of the fecal sample quantitative collection device according to the present invention, the collection tube 1, the collection tube cap 2 and/or the quantitative collector 6 are made of PVC material. The fecal sample quantitative collection device is made of PVC, has high strength, is not easy to damage and is safer.

In a preferred embodiment of the fecal sample quantitative collection device of the present invention, the large diameter end 15 of the inner tube portion 3 and/or the small diameter portion 19 of the reducing push rod 4 are provided with graduations. The precision of pushing samples is improved by setting scales, and further, when the collecting tube 1 is made of transparent materials, the large-diameter end 15 of the inner tube part 3 is provided with scales. When the collection tube 1 is made of an opaque material, the small diameter portion 19 of the diameter-variable push rod 4 is provided with graduations.

In a preferred embodiment of the fecal sample quantitative collection device of the present invention, a first sealing ring is arranged between the collection tube 1 and the collection tube cap 2, and a second sealing ring is arranged between the inner tube 3 and the collection tube cap 2. Further, the first sealing ring and/or the second sealing ring are/is annular sealing rings. The invention adopts the double waterproof measures of screw threads and sealing rings, effectively prevents the problem of leakage of the pyrolysis liquid and the excrement during transportation, and is safe and sanitary.

In a preferred embodiment of the fecal sample quantitative collection device of the present invention, the diameter-variable push rod 4 is a piston push rod, wherein the large diameter portion 18 is a piston head.

In the preferred embodiment of the fecal sample quantitative collection device of the present invention, the periphery of the collection tube cap 2 is provided with anti-slip patterns, the top end of the small diameter portion 19 is provided with a handle, and the liquid inlet valve 14 inputs a predetermined amount of the lysis liquid.

In a preferred embodiment of the fecal sample quantitative collection device according to the present invention, the processor 8 is a general purpose processor, a digital signal processor, an application specific integrated circuit ASIC, a field programmable gate array FPGA, an analog circuit or a digital circuit, the processor 8 comprising a memory comprising one or more read only memory ROM, random access memory RAM, flash memory or electrically erasable programmable read only memory EEPROM.

In another embodiment shown in fig. 2, the fecal sample quantitative collection device comprises a collection tube 1, a collection tube cap 2 and a quantitative collector 6. The collecting tube 1 comprises a concentration sensor 7 for detecting the concentration of a fecal sample, a processor 8, a closed end 9 and an open end, wherein the open end is provided with a first external thread with a first diameter, and the closed end 9 is provided with a stirring unit 10. The collecting pipe cap 2 comprises a pipe cap end part and a pipe cap top part, wherein the pipe cap end part is used for connecting the collecting pipe 1, the pipe cap end part is provided with a first internal thread 11 which is in threaded connection with the first external thread and a middle internal thread 12 with a second diameter, the pipe cap top part is provided with an end part through hole 13 with a third diameter and a liquid inlet valve 14, and the end part through hole 13 is sequentially communicated with the middle internal thread 12 and the first internal thread 11. The quantitative collector 6 comprises an inner pipe part 3 with a large diameter end 15 and a small diameter end 16, a reducing push rod 4 movably arranged at the inner pipe part 3 and a filter screen 17 arranged at the large diameter end 15, the small diameter end 16 is provided with a second external thread which is in threaded connection with the middle internal thread 12, the reducing push rod 4 comprises a large diameter part 18 and a small diameter part 19 which are respectively accommodated at the large diameter end 15 and the small diameter end 16, the small diameter part 19 is connected with the end through hole 13 in a sliding manner, the large diameter part 18 is tightly contacted with the large diameter end 15 and can slide in the large diameter end 15, the first diameter is larger than the second diameter, and the second diameter is larger than the third diameter. When the reducing push rod 4 filters and pushes the fecal sample to the closed end 9 through the filter screen 17, the processor 8 controls the stirring speed of the stirring unit 10 and controls the liquid inlet amount of the liquid inlet valve 14 based on the concentration signal detected by the concentration sensor 7, the liquid inlet valve 14 is connected with the liquid inlet pipe 22 to convey the liquid to the closed end 9, the periphery of the stirring unit 10 is provided with a filtering container 23 for filtering out the fecal sample after stirring, and the filtering container 23 allows the fecal sample smaller than the preset threshold size to be filtered out from the inside of the filtering container 23 to the closed end 9.

The embodiment further improves the detection precision of the acquisition device. Further, the inner diameter of the quantitative collector 6 has three types, which correspond to three different feces collection amounts, respectively. The collecting device is convenient to use, can quantitatively collect the fecal specimen and is transported at normal temperature.

In one embodiment, the collecting tray 5 is disc-shaped, and a triangular extension extends outwards from one side of the upper end of the collecting tray, and the triangular extension is a handheld part of the collecting tray. Can be used for hand-holding, and is very convenient to move or take.

As an improvement to the above technical solution, the collecting tray 5 is a disposable collecting tray.

Fig. 3 shows a schematic step diagram of an acquisition method using a fecal sample quantitative acquisition device according to an embodiment of the present invention, and one of the steps of the acquisition method using the fecal sample quantitative acquisition device includes:

the quantitative collector 6 is inserted into the feces, and the diameter-variable push rod 4 is moved upward with respect to the inner tube portion 3 to suck a predetermined amount of the feces sample to the large diameter end 15.

The quantitative collector 6 is placed in the collecting pipe 1, the first internal thread 11 is in threaded connection with the first external thread, the middle internal thread 12 is in threaded connection with the second external thread, and the collecting pipe cap 2 is connected with the quantitative collector 6 and the collecting pipe 1.

The reducing push rod 4 filters and pushes the fecal sample to the closed end 9 through the filter screen 17, the processor 8 controls the stirring unit 10 to stir the fecal sample at a predetermined stirring speed, and controls the liquid feeding amount of the liquid feeding valve 14 based on the concentration signal detected by the concentration sensor 7.

In the method, the quantitative collector 6 connected with the collecting pipe cap 2 is taken down, on the premise that the upper protruding part is complete, the quantitative collector 6 is used for pressing the fecal specimen placed in the clean sample collecting tray 5, the process is repeated for several times, the sample is confirmed to be filled in the quantitative collector, and then the quantitative collector is integrally placed in the collecting pipe 1, and the collecting pipe cap 2 is screwed. When the sampling tube cap 2 is covered, the protruding part on the sampling tube cap 2 is pressed by a finger so that the protruding part is leveled with the sampling tube cap 2, and the sampling process is completed. The invention is convenient for collecting the excrement, only the collecting pipe cap 2 is required to be taken down integrally, the quantitative collector 6 is inserted into the excrement specimen placed on the disposable collecting tray 5, the lower part is filled with the excrement, the collecting pipe 1 is put back, the diameter-variable push rod 4 is pressed down to complete the quantitative collecting work of the whole excrement specimen, the processor 8 controls the stirring unit 10 to stir the excrement specimen at a preset stirring speed, and the liquid inlet amount of the liquid inlet valve 14 is controlled based on the concentration signal detected by the concentration sensor 7, so that the excrement specimen and the solution such as the nucleic acid stabilizer can be placed for 24 hours at normal temperature after thoroughly mixing, the normal temperature transportation is convenient, and any other auxiliary tools are not needed. The invention can select the model of the quantitative sample collecting collector according to the required quantity of the fecal specimen. The traditional collection mode needs to be divided into small bags after the feces specimen is received by clinical or scientific researchers and is weighed by a balance, so that time and labor are wasted, the instability of the specimen in vitro is aggravated, and the subsequent experimental result is influenced. The excrement collecting device is simple to operate, can be independently completed only by simple explanation, can ensure the quality of collected samples, can be better convenient for clinical or scientific researchers, and greatly reduces the labor cost.

Industrial applicability

The fecal sample quantitative collection device and method of the present invention can be manufactured and used in the medical testing field.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described specific embodiments and application fields, and the above-described specific embodiments are merely illustrative, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous forms of the invention without departing from the scope of the invention as claimed.

Claims

1. The utility model provides a fecal sample ration collection system, collection system includes collection pipe (1), collection pipe cap (2) and ration collector (6), its characterized in that:

the collecting tube (1) comprises a concentration sensor (7) for detecting the concentration of a fecal sample, a processor (8), a closed end (9) and an open end, wherein the open end is provided with a first external thread with a first diameter, and the closed end (9) is provided with a stirring unit (10);

the collecting pipe cap (2) comprises a pipe cap end part and a pipe cap top part, wherein the pipe cap end part is used for connecting the collecting pipe (1), the pipe cap end part is provided with a first internal thread (11) in threaded connection with the first external thread and a middle internal thread (12) with a second diameter, the pipe cap top part is provided with an end part through hole (13) with a third diameter and a liquid inlet valve (14), and the end part through hole (13) is sequentially communicated with the middle internal thread (12) and the first internal thread (11);

the quantitative collector (6) comprises an inner pipe part (3) with a large-diameter end (15) and a small-diameter end (16), a variable-diameter push rod (4) movably arranged at the inner pipe part (3) and a filter screen (17) arranged at the large-diameter end (15), wherein the small-diameter end (16) is provided with a second external thread which is in threaded connection with the middle internal thread (12), the variable-diameter push rod (4) comprises a large-diameter part (18) and a small-diameter part (19) which are respectively accommodated at the large-diameter end (15) and the small-diameter end (16), the small-diameter part (19) is connected with the end through hole (13) in a sliding manner, and the large-diameter part (18) is tightly contacted with the large-diameter end (15) and can slide in the large-diameter end, and the first diameter is larger than the second diameter and the second diameter is larger than the third diameter;

when the diameter-variable push rod (4) filters and pushes the fecal sample to the closed end (9) through the filter screen (17), the processor (8) controls the stirring speed of the stirring unit (10) and controls the liquid inlet amount of the liquid inlet valve (14) based on the concentration signal detected by the concentration sensor (7).

2. The fecal sample quantitative collection device according to claim 1, wherein: the top of the pipe cap comprises an air pressure valve (20) for adjusting air pressure and a pressure sensor (21) for measuring and collecting pressure signals in the pipe, and a processor (8) connected with the pressure sensor (21) and the air pressure valve (20) controls the air pressure valve (20) based on the pressure signals.

3. The fecal sample quantitative collection device according to claim 1, wherein: the collecting device comprises a collecting tray (5) for containing excrement, and a triangular handheld part is outwards extended from one side of the upper end of the collecting tray (5).

4. The fecal sample quantitative collection device according to claim 1, wherein: the liquid inlet valve (14) is connected with a liquid inlet pipe (22) for conveying liquid to the closed end (9), a filtering container (23) for filtering out a stirred fecal sample is arranged on the periphery of the stirring unit (10), and the filtering container (23) allows the fecal sample smaller than a preset threshold size to be filtered out from the inside of the filtering container (23) to the closed end (9).

5. The fecal sample quantitative collection device according to claim 1, wherein: the large diameter end (15) of the inner pipe (3) and/or the small diameter part (19) of the reducing push rod (4) are provided with scales.

6. The fecal sample quantitative collection device according to claim 1, wherein: the collecting pipe is characterized in that a first sealing ring is arranged between the collecting pipe (1) and the collecting pipe cap (2), and a second sealing ring is arranged between the inner pipe part (3) and the collecting pipe cap (2).

7. The fecal sample quantitative collection device according to claim 1, wherein: the collecting pipe (1), the collecting pipe cap (2) and/or the quantitative collector (6) are made of PVC materials, the reducing push rod (4) is a piston push rod, and the large-diameter part (18) is a piston head.

8. The fecal sample quantitative collection device according to claim 1, wherein: the periphery of collection pipe cap (2) is provided with anti-skidding line, small diameter portion (19) top is equipped with the handle, feed liquor valve (14) input predetermined quantity's lysate.

9. The fecal sample quantitative collection device according to claim 1, wherein: the processor (8) is a general purpose processor, a digital signal processor, an application specific integrated circuit ASIC, a field programmable gate array FPGA, an analog circuit or a digital circuit, the processor (8) comprises a memory comprising one or more read only memory ROM, random access memory RAM, flash memory or electronically erasable programmable read only memory EEPROM.

10. A collection method using the fecal sample quantitative collection device according to any of claims 1 to 9, comprising the steps of:

the quantitative collector (6) is inserted into the excrement, and the reducing push rod (4) moves upwards relative to the inner pipe part (3) to suck a preset amount of excrement sample to the large-diameter end (15);

the quantitative collector (6) is placed in the collecting pipe (1), a first internal thread (11) is connected with the first external thread in a threaded mode, a middle internal thread (12) is connected with a second external thread in a threaded mode, and the collecting pipe cap (2) is connected with the quantitative collector (6) and the collecting pipe (1);

the reducing push rod (4) filters and pushes the fecal sample to the closed end (9) through the filter screen (17), the processor (8) controls the stirring unit (10) to stir the fecal sample at a preset stirring speed, and the liquid inlet amount of the liquid inlet valve (14) is controlled based on a concentration signal detected by the concentration sensor (7).