CN105092281B - Excrement is sampled and parasite concentration device - Google Patents

Abstract

The invention provides a kind of sampling of excrement, filtering, and parasite concentration device, including：Storage sample container；And resampling filter device, comprising sampling spoon, barrel strainer and installing handle, sampling spoon includes key bit and connecting rod, and key bit is connected by one end of connecting rod and filter screen, and the other end and the installing handle of filter screen are tightly connected, and installing handle and storage sample container are detachably connected.Such a structure causes the sampling of the present invention and parasite concentration utensil to have the advantages that simple in construction, good airproof performance, be easy to sample to retain and take out；Because filter screen is in tubbiness, filter area is increased, and can further improve filter efficiency, accelerates the subsequent treatment speed of sample, macroporous by increasing, and is conducive to being relatively large in diameter, suspending the difficult protozoon detection centrifuged.

Description

Stool sampling and parasite concentrators

technical field

The invention belongs to the field of medical devices, in particular to a feces sampling and parasite concentrator.

Background technique

Parasites in the human body will have varying degrees of impact on the health of the human body, parasites in different parts of the body, parasites or parasite eggs will be taken out of the body through the cavity that communicates with the body surface at the corresponding parasite site, and parasites in the digestive system Most of the worms are excreted from the human stool, so the detection of stool samples has become an indispensable content in the clinical diagnosis and treatment of intestinal infectious diseases. Different individuals have different dietary structures and eating and chewing habits, resulting in differences in the types and sizes of impurities in the feces. Large impurities can easily interfere with the microscopic examination of parasites, leading to clinical misdiagnosis or missed diagnosis. In addition, the inspection of parasites or eggs with low infection rate can easily lead to missed diagnosis, so it is particularly important to separate the corresponding parasites or parasite eggs through the steps of filtration separation, sedimentation, and centrifugation concentration in clinical etiological examination. The feces collection bottles currently in clinical testing in China are only used as storage containers. Some of the existing foreign feces sample samplers and technologies are equipped with filtering devices to facilitate the coarse filtration and concentration of feces samples and remove large particles of impurities in the samples. Remove, and pass parasites or parasite eggs into the crude filtrate for subsequent assays. However, a new problem has been discovered in the clinical inspection work recently, that is, some parasitic protozoa cannot be detected by conventional centrifugal sedimentation methods, and they are suspended in the liquid, so that diagnosis and treatment cannot be carried out.

Contents of the invention

The present invention is carried out to solve the above problems, and the purpose is to provide a feces sampling and parasite concentrator that can effectively improve the efficiency of sample filtration and separation. The filter apertures are designed in different sizes, and the parasitic protozoa suspended in the feces are also taken into account. Therefore, the filtration efficiency and detection accuracy of the filter screen in the existing feces sampler are further improved.

In order to achieve the above object, the present invention adopts the following technical solutions:

<Structure 1>

The invention provides a feces sampling and parasite concentrator, which has such features, including: a first sample storage container; a second sample storage container; and a sampling filtering device, including a sampling spoon, a barrel filter and an installation handle , the sampling spoon includes a spoon head and a connecting rod, the spoon head is connected to one end of the barrel-shaped filter screen through the connecting rod, and the other end of the barrel-shaped filter screen is airtightly connected to the installation handle, wherein the first sample storage container and the second sample storage container The ports are detachably connected to both ends of the installation handle respectively, and the barrel-shaped filter screen is connected to the installation handle.

In the feces sampling and parasite concentrator provided by the present invention, it may also have such a feature: wherein, the end of the barrel-shaped filter screen connected to the connecting rod is in the shape of a convex cone.

In the feces sampling and parasite concentrator provided by the present invention, it may also have such a feature: wherein, the end of the barrel-shaped filter screen connected to the connecting rod is in a concave conical shape.

In the feces sampling and parasite concentrator provided by the present invention, it may also have such a feature: wherein, the barrel-shaped filter screen includes two types of barrel-shaped sub-screens with different filter hole diameters.

In the feces sampling and parasite concentrator provided by the present invention, it may also have such a feature: an annular plastic ring with a predetermined width is arranged on the middle and outer periphery of the mounting handle, which is convenient for holding the sampler.

In the feces sampling and parasite concentrator provided by the present invention, it may also have such a feature: the head of the sampling spoon is in the shape of a spoon or a flower umbrella.

In the feces sampling and parasite concentrator provided by the present invention, it may also have such a feature: the centrifugal end of the second sample storage container is in the shape of a convex cone.

<Structure 2>

Further, the present invention also provides a feces sampling and parasite concentrator, which has such features, including: a third sample storage container; a second sample storage container; a sampling device, including a spoon head, a connecting rod and a top cover , the spoon head is connected to one end of the connecting rod, the top cover is connected to the other end of the connecting rod, the filter device includes a barrel-shaped filter screen and an installation handle, and one end of the barrel-shaped filter screen is connected to the end of the installation handle in a sealed manner, wherein the third sample storage The container and the top cover are detachably connected, and the ports of the third sample storage container and the second sample storage container are respectively detachably connected with the two ends of the installation handle. When the third sample storage container is matched with the sampling device, it is used for the original stool sample For collection, when the third sample storage container is matched with the filter device and the second sample storage container, it is used for filtering and centrifugal concentration of test samples, and the barrel-shaped filter screen is connected with the installation handle.

In the feces sampling and parasite concentrator provided by the present invention, it may also have such a feature: the top of the barrel-shaped filter screen is in any one of a convex conical shape or a concave conical shape.

In the feces sampling and parasite concentrator provided by the present invention, it may also have such a feature: the barrel-shaped filter screen may also include two types of barrel-shaped sub-screens with different filter hole diameters.

In the feces sampling and parasite concentrator provided by the present invention, it may also have such a feature: an annular plastic ring with a predetermined width is arranged on the middle peripheral part of the installation handle.

In the feces sampling and parasite concentrator provided by the present invention, it may also have such a feature: the head of the sampling spoon is in the shape of a spoon or a flower umbrella.

In the feces sampling and parasite concentrator provided by the present invention, it may also have such a feature: the end of the second sample storage container away from its port has a centrifugal end, and the centrifugal end is in the shape of a convex cone.

Invention function and effect

According to the feces sampling and parasite concentrator involved in the present invention, in the first structure, the internal thread provided through the ports of the first sample storage container and the second sample storage container in the sample storage container matches the external thread on the mounting handle Use, so that the sampling filter device composed of sampling spoon, bucket filter and installation handle is placed in the first sample storage container; in the second structure, the third sample storage container cooperates with the sampling device, and is specially used to take the original feces sample , the third sample storage container is matched with the filter device and the second sample storage container and is specially used for the collection of samples for testing. The original sample sampling device and the sample sampling device for testing are separated independently, and the patient and the testing personnel each hold a part, so that the respective sampling The device is further simplified, and the sampling operation is more convenient; the two structures make the sampling and parasite concentrator of the present invention have the advantages of simple structure, good sealing performance, and convenience for sample storage and removal. It can be increased, which can further improve the filtration efficiency and speed up the subsequent processing of samples.

Description of drawings

Fig. 1 is a schematic diagram of the appearance structure of the stool sampling and parasite concentrator in Embodiment 1 of the present invention;

2 is a schematic diagram of the composition and structure of the stool sampling and parasite concentrator in Embodiment 1 of the present invention;

Fig. 3 is a schematic structural view of a sampling and filtering device in Embodiment 1 of the present invention;

Fig. 4 is a schematic structural view of the sampling and filtering device observed along the A direction in Fig. 3;

Fig. 5 is the structural representation of the original sample sampling device in the second embodiment of the present invention;

6 is a schematic structural view of a detection sample sampling device in Embodiment 2 of the present invention;

Fig. 7 is a schematic structural view of a sampling and filtering device in Modification 1 of the present invention;

Fig. 8 is a schematic structural view of a sampling and filtering device in Modification 2 of the present invention;

Fig. 9 is a schematic cross-sectional structure diagram of a sampling and filtering device in Modification 3 of the present invention;

Fig. 10 is a schematic structural view of a sampling and filtering device in Modification 4 of the present invention; and

Fig. 11 is a schematic structural diagram of a sampling and filtering device in a fifth modification of the present invention.

detailed description

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiment one

1 is a schematic diagram of the appearance and structure of the stool sampling and parasite concentrator in Embodiment 1 of the present invention;

As shown in Figure 1, the structure of fecal sampling and parasite concentrator 100 comprises the first sample storage container 11 and the second sample storage container 12 and the annular plastic ring 241 in Figure 3, the centrifugal end of the second sample storage container 12 It is in the shape of a convex cone to facilitate subsequent centrifugation of the sample. At the same time, the ports of the first sample storage container 11 and the second sample storage container 12 have internal threads.

FIG. 2 is a schematic diagram of the composition and structure of the stool sampling and parasite concentrator in Embodiment 1 of the present invention.

As shown in Figure 2, the feces sampling and parasite concentrator 100, in addition to including the first sample storage container 11 and the second sample storage container 12, also includes a sampling filter device 2, before use, the sampling filter device 2 is located at the first In the sample storage container 11.

Fig. 3 is a schematic structural diagram of the sampling and filtering device in Embodiment 1 of the present invention.

As shown in Figure 3, the sampling filter device 2 includes: a spoon head 21, a connecting rod 22, a barrel-shaped filter screen 23 and an installation handle 24; 21 is connected with one end of barrel-shaped filter screen 23 by connecting rod 22, and the other end of barrel-shaped filter screen 23 is sealed and connected with installation handle 24; It has an external thread, and at the same time, an annular plastic ring 241 with a predetermined width is arranged in the middle of the installation handle 24, which is convenient for hand-held sampling and concentrator.

Considering the convenience of clinical application, the volume of the spoon head 21 is a fixed value, so as to determine the sample volume when sampling conveniently. In the present embodiment, the volume of the spoon head 21 is 0.55cm; According to literature reports and the latest research of this laboratory , to actually detect the size of parasites or eggs. In this embodiment, the diameters of the filter holes 231 on the surface of the barrel filter 23 are set to 400 μm and 800 μm.

FIG. 4 is a schematic structural view of the sampling and filtering device viewed along direction A in FIG. 3 in Embodiment 1 of the present invention.

As shown in Figure 4, barrel filter screen 23 and installation handle 24 sealing connections, this kind of structure can not only ensure that the supernatant after coarse filtration flows in the second sample storage container 12 but also facilitates from the filter screen 23 with a suction pipe. Sampling directly in the cavity.

As shown in Fig. 2, Fig. 3 and Fig. 4, before the excrement sampling and parasite concentrator 100 are not used, the internal thread and the outer wall of the installation handle 24 provided at the ports of the first sample storage container 11 and the second sample storage container 12 Cooperate with the external threads on the top, place the spoon head 21, the connecting rod 22 and the barrel-shaped filter screen 23 in the first sample storage container 11, so as to ensure that the sampling spoon 20 is not polluted by bacteria in the air;

During use, the bottom of the first sample storage container 11 faces down, and after the spoon head 21 takes a certain volume of stool sample, insert it in the first sample storage container 11 filled with buffer solution or fixative solution, and the first sample storage container 11 port After the internal thread of the inner thread and the external thread on the outer wall of the mounting handle 24 are matched and sealed, the excrement sampling and the parasite concentrator 100 are vibrated, so that the sample is fully dissolved by the buffer or fixative; according to different detection purposes, the sampling position is also different, when When it is necessary to take the suspension for detection, unscrew the second sample storage container 12, and extend the suction pipe from the end of the installation handle into the cavity of the filter screen 23 for direct sampling; During detection, the feces sampling and parasite concentrator 100 are turned upside down so that the bottom of the second sample storage container 12 faces down, and the buffer solution of the dissolved sample flows into the second sample storage after the supernatant filtered by the barrel filter screen 23. In the container 12, the filtered filter residue is stored in the cavity of the barrel-shaped filter screen 23, and then the sample in the second sample storage container 12 is centrifuged, and the supernatant or sediment is taken for detection.

Function and effect of embodiment one

According to the feces sampling and parasite concentrator provided in Embodiment 1, the internal thread provided at the port of the sample storage container 1 and the sample storage container 2 in the sample storage container is matched with the external thread on the mounting handle, so that the sampling spoon, bucket The sampling and filtering device composed of a shaped filter screen and a mounting handle is placed in the first sample storage container and the second sample storage container. This structure makes the feces sampling and parasite concentrator in this embodiment simple in structure and good in sealing performance. , The advantage of being easy to store and take out the sample; because the filter is in the shape of a barrel, the filtration area can be increased, which can further improve the filtration efficiency and facilitate the subsequent processing of the sample.

Of course, the stool sampling and parasite concentrator involved in the present invention is not limited to the structure in the first embodiment.

In the first embodiment, the original sample collection device and the detection sample collection device are the same device, and in the feces sampling and parasite concentrator provided by the present invention, the two can also be separated independently, as shown in the second embodiment.

In Embodiment 1 and Embodiment 2, the head of the sampling spoon is in the shape of a spoon. In the stool sampling and parasite concentrator provided by the present invention, the head of the sampling spoon can also be in the shape of a flower umbrella, see Modification 1.

In Embodiment 1 and Embodiment 2, the end of the barrel-shaped filter screen is circular. In the stool sampling and parasite concentrator provided by the present invention, the end of the barrel-shaped filter screen can be convex conical or inner. Concave conical type, see modification 2 and modification 3.

In Embodiment 1, Embodiment 2, and Modifications 1 to 3, the barrel-shaped filter screen is only a filter screen with the same aperture of the filter holes. In the feces sampling and parasite concentrator provided by the present invention, the barrel-shaped filter screen The screen may also include two types of barrel-shaped sub-screens with different filter hole diameters, see Modification 4.

In Modification 4, the filter holes of the two sub-screens of the barrel-shaped filter screen are located on the side wall, and in the stool sampling and parasite concentrator provided by the present invention, the filter holes of the large-aperture sub-screen are located at the bottom , the filter holes of the small-diameter sub-screen are located on the side wall, see modification five.

Embodiment two

In the second embodiment, the same structures as those in the first embodiment are given the same symbols, and the same descriptions are omitted.

Fig. 5 is a schematic structural diagram of the original sample sampling device in the second embodiment.

As shown in Figure 5, the original sample sampling device 200 includes: a third sample storage container 13 and a sampling device 14, the sampling device 14 includes a top cover 141 in addition to the spoon head 21 and the connecting rod 22 in Embodiment 1, connected One end of the rod 22 is connected to the spoon head 21 , and the other end is connected to the top cover 141 . The port of the third sample storage container 13 is provided with external threads, wherein the external threads can be matched with the top cover 141 for use.

During use, the top cover 141 is unscrewed from the third sample storage container 13, and after a certain volume of original feces sample is taken with the spoon head 21, the sampling device 14 is inserted into the third sample storage container filled with buffer solution or fixative solution again. 13, then tighten the top cover 141, vibrate the stool sampling and parasite concentrator 200, so that the sample is fully dissolved by the buffer or fixative.

Fig. 6 is a schematic structural diagram of a sample sampling device for detection in Example 2.

As shown in Figure 6, the sampling device structure diagram 300 of detection sample comprises: the 3rd sample storage container 13, filtering device 15 and the second sample storage container 12, and filtering device 15 comprises barrel-shaped filter cartridge 23 among Fig. 4 and installation The handle 24, the barrel-shaped filter screen 23 and the installation handle 24 are connected, the external thread of the third sample storage container 13 is matched with the internal thread of one end of the installation handle 24, and the second sample storage container 12 and the installation handle 24 are connected in the form of insertion , the three constitute a sampling device 300 for testing samples, wherein the barrel-shaped filter cartridge 23 can be placed in the second sample storage container 12 , or can be placed in the third sample storage container 13 in the opposite direction to that shown in FIG. 6 .

During use, the top cover 141 in the original sample sampling device 200 is unscrewed from the third sample storage container 13, the mounting handle 24 that has been connected with the second sample storage container 12 is connected with the third sample storage container 13, and then the The original sample sampling device 300 is turned upside down so that the bottom of the second sample storage container 12 faces down, and the buffer solution of the dissolved sample flows into the second sample storage container 12 after the buffer solution of the dissolved sample is filtered through the barrel filter screen 23, and the filtered filter residue Stored in the cavity of the barrel-shaped filter screen 23, then the sample in the second sample storage container 12 is centrifuged, and the supernatant or sediment is taken for detection.

Function and effect of embodiment two

According to the feces sampling and parasite concentrator provided in Embodiment 2, the third sample storage container is matched with the sampling device, which is specially used for the collection of original feces samples, and the third sample storage container is matched with the filter device and the second sample storage container It is specially used for the collection of samples for testing. The original sample collection and the collection process of testing samples are independent of each other, which further simplifies the sampling device in each step, facilitates the storage and removal of samples, and further speeds up the collection and processing of samples. , because the filter screen is also barrel-shaped, the filtration area can be increased, which can further improve the filtration efficiency and facilitate the subsequent processing of samples.

Variation 1

In the first modification, the same symbols are given to the same structures as those in the first embodiment, and the same descriptions are omitted.

Fig. 7 is a schematic structural diagram of a sampling and filtering device in Modification 1 of the present invention.

As shown in Figure 7, the spoon head 31 in the sampling filter device 3 is in the shape of an open flower umbrella, and the wall of the spoon head 31 is provided with a triangular hole, which is convenient for the buffer solution to enter the inside of the spoon head 31 to dissolve the sample and contribute to the removal of feces. Mix well with liquid.

Variation 2

In the second modification, the same symbols are given to the same structures as those in the first embodiment, and the same descriptions are omitted.

Fig. 8 is a schematic structural diagram of a sampling and filtering device in Modification 2 of the present invention.

As shown in FIG. 8 , the end 431 where the barrel filter 43 in the sampling filter device 4 is connected to the connecting rod 22 is in a convex conical shape. The diameter of the filter holes on the conical surface ranges from 400 μm to 800 μm, which is convenient for the suspended protozoa to float up, and at the same time facilitates the suspended protozoa to enter the cavity behind the filter screen through the filter holes. The cavity structure is shown in Figure 4, so that it can be taken during inspection. to samples containing parasitic protozoa.

Variation three

Likewise, in the third modification, the same structures as those in the first embodiment are given the same symbols and the same descriptions are omitted.

FIG. 9 is a schematic cross-sectional structure diagram of a sampling and filtering device in Modification 3 of the present invention.

As shown in Figure 9, the barrel filter 53 in the sampling filter device 5 is connected to the end 531 of the connecting rod 22 in a concave conical shape, and the diameter of the filter hole on the surface of the cone is in the range of 400 μm-800 μm, which is convenient for suspending protozoa At the same time, it is convenient for suspended protozoa to enter the cavity behind the filter screen through the filter holes. The cavity structure is shown in Figure 4, so that samples containing parasitic protozoa can be taken during inspection.

Function and Effect of Modification 2 and Modification 3

According to the feces sampling and parasite concentrators provided in Modification 2 and Modification 3, since the end of the connection between the barrel-shaped filter screen and the connecting rod has changed from a circular shape to a convex or concave conical shape, the surface of the conical shape is uniform. The distribution of filter holes further increases the filter area of the barrel filter and improves the filter efficiency of samples.

Variation 4

Likewise, in the fourth modification, the same structures as those in the first embodiment are assigned the same symbols and the same descriptions are omitted.

FIG. 10 is a schematic structural diagram of a sampling and filtering device in Modification 4 of the present invention.

As shown in Figure 10, the barrel filter screen 63 in the sampling filter device 6 includes a small aperture barrel filter screen 631 and a large aperture barrel filter screen 632, and the small aperture barrel filter screen 631 and the large aperture barrel filter screen 632 can be Assembled or disassembled according to actual needs, the aperture of the filter hole in the small-aperture barrel-shaped filter screen 631 is 400 μm, and the aperture of the filter hole in the large-aperture barrel-shaped filter screen 632 is 800 μm, so as to meet the requirement that larger suspended protozoa can be separated. Avoid the dilemma that protozoa or eggs and nematode larvae are too large to enter the suspension through a conventional barrel filter, and cannot be obtained when sampling with a sampler with a normal aperture size.

The small-aperture barrel-shaped filter screen 631 and the large-aperture barrel-shaped filter screen 632 can be combined or disassembled according to actual needs. When the sampling requirement only contains parasitic protozoa, only the large-aperture barrel-shaped filter screen 632 can be installed. When performing routine sampling and detection, Can only install the barrel filter screen 631 of small aperture.

In another embodiment, the small-aperture barrel-shaped filter screen 631 and the large-aperture barrel-shaped filter screen 632 are fixedly connected, and conventional sampling and large parasite sampling are selected by controlling the amount of buffer solution in the first sample storage container 11 . Specifically as follows: when conventionally sized worms or eggs were sampled, the amount of buffer solution in the first sample storage container 11 had not crossed the small-aperture barrel-shaped filter screen 631, but had not crossed the large-aperture barrel-shaped filter screen 632 above; When it is necessary to take samples of slightly larger parasitic protozoa or nematode larvae, increase the amount of buffer solution in the first sample storage container 11 so that it does not pass through the large-diameter barrel filter 632 .

Function and Effect of Variation 4

According to the feces sampling and parasite concentrator provided in Modification 4, since the barrel-shaped filter screen includes a large-aperture barrel-shaped filter screen and a small-aperture barrel-shaped filter screen, it can not only meet the needs of large-diameter parasites or eggs. The requirements of sampling inspection can also carry out the sampling inspection of current routine parasites.

Variation five

Likewise, in the fifth modification, the same structures as those in the first embodiment are assigned the same symbols and the same descriptions are omitted.

Fig. 11 is a schematic structural diagram of a sampling and filtering device in Modification 5 of the present invention.

As shown in Figure 11, the barrel filter screen 73 in the sampling filter device 7 includes a small aperture barrel filter screen 731 and a large aperture barrel filter screen 732, and the filter holes of the small aperture barrel filter screen 731 are located at the side wall and the bottom , the filter hole of the large-aperture barrel-shaped filter screen 732 is located at the bottom of the large-aperture barrel-shaped filter screen 732, the aperture of the filter hole in the small-aperture barrel-shaped filter screen 631 is 400 μm, and the aperture of the filter hole in the large-aperture barrel-shaped filter screen 632 is 800 μm.

The method of using the feces sampling and parasite concentrator in Modification 5 is similar to Modification 4, but Modification 5 is more suitable for buffer or fixative with high specific gravity, small-diameter filter screen 731 and large-diameter barrel-shaped filter screen 732 Bottoms are all provided with filter holes, so that the fast-floating large insect eggs in the buffer or fixative can pass through the filter holes faster.

Function and Effect of Variation 5

According to the feces sampling and parasite concentrator provided in Modification 5, filter holes are arranged at the bottom of the barrel-shaped filter screen, which is more conducive to the fast-floating large insect eggs in high specific gravity buffer or fixative solution to pass through the filter holes.

In Modifications 1 to 5, taking the sampling and filtering device in Embodiment 1 as an example, the stool sampling and parasite concentrator are further improved, because in Embodiment 2, the sampling spoon and the barrel filter are separated, so there is no sampling and filtering device, but the improvements to the spoon head and the barrel-shaped filter screen in Modifications 1 to 5 are still applicable to Embodiment 2.

Of course, the pore size of the filter hole of the stool sampling and parasite concentrator of the present invention is not limited to the pore size provided in the specific embodiment, it can be changed according to the size of the specific parasite or parasite egg in the test, and at the same time It should be noted that the filter holes shown in the various drawings of the present invention are only for schematic purposes, not their actual sizes, and the ratio of the filter holes to other structures does not have to be fixed according to the ratio shown in the drawings.

Although the specific implementations of the description of the present invention have been described above, so that those skilled in the art can understand the present invention, it should be clear that the present invention is not limited to the scope of the specific implementations. For those of ordinary skill in the art, as long as Various changes are within the spirit and scope of the present invention defined and determined by the appended claims, and these changes are obvious, and all inventions and creations utilizing the concept of the present invention are included in the protection list.

Claims (5)

1. A stool sampling and parasite concentrator, characterized in that it comprises: The first sample storage container; a second sample storage container; and The sampling and filtering device includes a sampling spoon, a barrel filter and a mounting handle, the sampling spoon includes a spoon head and a connecting rod, and the spoon head is connected to one end of the barrel filter through the connecting rod, and the barrel The other end of the filter screen is sealed with the installation handle, Wherein, the ports of the first sample storage container and the second sample storage container are respectively detachably connected to both ends of the installation handle, The barrel-shaped filter screen communicates with the installation handle, One end of the barrel-shaped filter screen connected to the connecting rod is in any one of a convex conical shape or a concave conical shape, The barrel-shaped filter screen includes two types of barrel-shaped sub-screens with different filter hole diameters, and the two types of barrel-shaped sub-screens with different filter hole diameters are respectively a small-aperture barrel filter screen with a filter hole diameter of 400 μm and a filter screen. The pore diameter is 800μm large-diameter barrel filter. 2. A stool sampling and parasite concentrator, characterized in that it comprises: The second sample storage container; The third storage container; The sampling device includes a spoon head, a connecting rod and a top cover, the spoon head is connected to one end of the connecting rod, and the top cover is connected to the other end of the connecting rod; and The filtering device includes a barrel-shaped filter screen and a mounting handle, and one end of the barrel-shaped filter screen is sealed with one end of the mounting handle, Wherein, the third sample storage container is detachably connected to the top cover, The ports of the third sample storage container and the second sample storage container are respectively detachably connected to both ends of the installation handle, When the third sample storage container is matched with the sampling device, it is used for collecting original fecal samples; when the third sample storage container is matched with the filter device and the second sample storage container, it is used for detection By filtration and centrifugal concentration of samples, The barrel-shaped filter screen communicates with the installation handle, The top of the barrel-shaped filter screen is any one of a convex conical shape or a concave conical shape, The barrel-shaped filter screen includes two types of barrel-shaped sub-screens with different filter hole diameters, and the two types of barrel-shaped sub-screens with different filter hole diameters are respectively a small-aperture barrel filter screen with a filter hole diameter of 400 μm and a filter screen. The pore diameter is 800μm large-diameter barrel filter. 3. The stool sampling and parasite concentrator according to claim 1 or 2, characterized in that: Wherein, an annular plastic ring with a predetermined width is provided at the middle outer peripheral portion of the installation handle. 4. The stool sampling and parasite concentrator according to claim 1 or 2, characterized in that: Wherein, the spoon head of the sampling spoon is in the shape of a spoon or a flower umbrella. 5. The stool sampling and parasite concentrator according to claim 1 or 2, characterized in that: Wherein, the end of the second sample storage container away from its port has a centrifugal end, and the centrifugal end is in the shape of a convex cone.