Abstract:
The present invention provides a feces sampling and detecting device and a method for detecting feces based on the feces sampling and detecting device. The device includes a detector, a casse with detecting strips provided in the detector, a collector accommodated in the detector detachably, a feces sampler for sealing the collector detachably, and at least one puncturing part arranged at a bottom of the detector facing one side of the collector. The feces sampling and detecting device can detect collected feces quickly, thereby avoiding feces sample from nature changing in an interval period, and preventing liquid in the collector from entering the detector to influence safety of the device of the present invention.

Description:
TECHNICAL FIELD OF THE INVENTION 
       [0001]    The present invention relates to feces sampling and detecting device and a method for detecting feces based on the device of the present invention, which belongs to the field of medical apparatus and medical detection. 
       BACKGROUND OF THE INVENTION 
       [0002]    Feces detection is usually applied to early screening of many diseases, for example, it can be screened whether a patient suffers from gastrointestinal bleeding by testing haemoglobin in feces. So feces detection becomes a routine item for detecting diseases in many medical units. 
         [0003]    In the existing process of feces detection, feces is first collected in a feces sampling device by a patient, and then the feces in the feces sampling device is placed in a special feces detecting device for detecting by a medical staff. Operating like this disables the patients to detect the feces by themselves. In addition, because the collecting device and the detecting device are two separate apparatus, a sample in the feces collecting device cannot be detected immediately, after a period of time, the nature of feces usually changes, which causes an inaccurate detection result. In addition, when the operation is finished, the medical staff needs to abandon the feces collecting device and the detecting device separately, and so many collecting devices and detecting devices occupy a lot of space. 
         [0004]    A feces sampling and occult blood self testing device is disclosed in a Chinese patent 201210299951.4; this self testing device is composed of a cover, a main body container, a feces sampling rod guiding channel in the main body container, a feces dissolving tank at lower part in the main body container, a feces liquid filtering tube below the feces dissolving tank, a communicating tube and detecting strips detection accommodating slot on the side wall of the main body container. The cover is fixed with or not fixed with a feces sampling rod; the top of the feces sampling rod is fixed at the internal top wall of the cover; the feces sampling rod is inserted in the feces sampling rod guiding channel, and the bottom of the feces liquid filtering tube is connected with the bottom of the detecting strips detection accommodating slot through the communicating tube. The device has both the feces sampling function and the feces detecting function. However, in the process of manufacturing the device, because the internal structure of the main body container is complex, it is very difficult to mould; in addition, because of a special position of the feces dissolving tank, it is very difficult for a sealing membrane to seal. In addition, because the top of the feces dissolving tank is sealed by the sealing membrane, once the sealing has problem, liquid in the whole dissolving tank will moisten the detecting strips in the detecting strips detection accommodating slot, which influences the detection. 
         [0005]    Therefore, a device which has both the feces sampling function and the feces detecting function and is highly safe and easy to be moulded is needed. 
       SUMMARY OF THE INVENTION 
       [0006]    A purpose of the present invention is to provide feces sampling and detecting device, which overcomes the defects, like difficulty in moulding and poor safety, of the existing feces sampling and detecting device. 
         [0007]    Another purpose of the present invention is to provide a method for detecting feces based on the feces sampling and detecting device of the present invention, which overcomes the defect of a long interval between collecting and detecting of the existing device. 
         [0008]    On one hand, the present invention provides a feces sampling and detecting device; the device comprises a detector, detecting strips provided in the detector, a collector accommodated in the detector detachably, a feces sampler for sealing the collector detachably, and at least one puncturing part arranged at a bottom of the detector facing one side of the collector. 
         [0009]    Furthermore, both the detector and the collector comprise a side wall and a bottom combined with the side wall, and both bottom area and height of the collector are less than that of the detector. 
         [0010]    Furthermore, the sum of heights of the feces sampler combined with collector and height of the puncturing part is less than or equal to the height of the detector. 
         [0011]    Furthermore, the shapes of the collector and the detector are same. 
         [0012]    Furthermore, the bottom of the collector is made of a material which is easy to be punctured. 
         [0013]    Furthermore, the bottom of the collector is made of aluminium foil. 
         [0014]    Furthermore, there are two puncturing parts respectively arranged at two sides of a relatively long symmetry axis on a plane where the bottom of the detector and the bottom of the collector are superposed. 
         [0015]    Furthermore, the puncturing part is cone-shaped, and a diameter of the puncturing part decreases gradually towards the collector from the bottom of the detector. 
         [0016]    Furthermore, the puncturing part comprises multiple identical right triangles; a relatively short right-angle side of each right triangles clings to the bottom of the detector, and relatively long right-angle sides of each right triangle clings to each other, and a diameter of the puncturing part decreases gradually towards the collector from the bottom of the detector. 
         [0017]    Furthermore, the feces sampler comprises a handle, a sampling rod and a sealing portion therebetween; the feces sampler is combined with the collector through the sealing portion, an end of the sampling rod which is far away from the handle is provided with screw threads extending from bottom to top. 
         [0018]    Furthermore, the feces sampler comprises a handle and a sampling rod combined with the handle; an internal surface of the handle is provided with a sealing portion combined with the collector, an end of the sampling rod which is far away from the handle is provided with screw threads extending from bottom to top. 
         [0019]    Furthermore, a membrane or a plug is provided in the collector, and a through hole for the sampling rod to pass through is provided at the centre of the membrane or the plug; the membrane or the plug divides a cavity of the collector into an observing cavity and a detecting cavity under the observing cavity; the length of the sampling rod is larger than the height of the observing cavity; the detecting cavity contains diluents; when the sampling rod passes through the through hole, the detecting cavity and the observing cavity are not communicated. 
         [0020]    Furthermore, the through hole of the membrane extends downwards for 0.1-0.5 cm towards the bottom of the collector; the membrane is made of a compressible material; the diameter of the through hole is less than or equal to that of a part where the sampling rod and the through hole is combined, and the diameter of the through hole is equal to the external diameter of the screw thread. 
         [0021]    Furthermore, the plug is made of a compressible material; the thickness of the plug is 0.5-2 cm. 
         [0022]    Furthermore, the inside of the detector is provided with a detecting casse, the detecting casse clings to the side wall of the detector, and detecting strips are fixed in the detecting casse. 
         [0023]    Furthermore, one surface of the detecting casse is provided with multiple grooves, and detecting strips are provided in the grooves. 
         [0024]    Furthermore, two supporting bars extend from two ends at the bottom of the detecting casse; the sum of heights of the supporting bar and the groove is equal to the height of the detecting strip. 
         [0025]    Furthermore, the detector is rectangle-shaped; at least one protuberant rib which is parallel to a side wall with a relatively large area is provided in the detector; a distance between the protuberant rib and the side wall with a relatively large area which is closest to the protuberant rib is equal to the thickness of a casse. 
         [0026]    Furthermore, the collector, the handle and the sealing portion of the feces sampler coordinating with the collector are rectangle-shaped; a sealing ring is provided on the periphery of the sealing portion; and the sealing ring is rectangle-shaped. 
         [0027]    Furthermore, the sealing portion of the feces sampler is cylinder-shaped; the sealing portion is provided with screw threads coordinating with the collector, and a corresponding tail end of screw threads of the collector is provided with a stop rotating part; the stop rotating part is a stop rotating slot or a stop rotating block. 
         [0028]    Furthermore, a distance between two opposite side walls of the collector is less than or equal to a distance of the sealing portions coordinating with them. 
         [0029]    Furthermore, the feces sampler is provided with protuberances along the periphery of the handle; a distance between the protuberances on the two opposite side of the handle is larger than a distance between the detecting casse which coordinate with the feces sampler and the opposite side of the detector. 
         [0030]    Furthermore, the collector is made of a compressible material; a notch extending from top to bottom is provided at a top of a side wall of the detector. 
         [0031]    Furthermore, the length of the notch is approximate to the height of the puncturing part, and the width of the notch is within ¼ to 1 of the width of a thumb. 
         [0032]    Furthermore, the detector is a clear and colourless container made of a compressible material. 
         [0033]    On the other hand, the present invention provides a method for detecting feces based on the feces sampling and detecting device, which comprises the following steps: 
         [0034]    Step  1 : sampling feces through a feces sampler; 
         [0035]    Step  2 : combining the feces sampler with sampled feces with a collector; and 
         [0036]    Step  3 : accommodating a device formed by combining the feces sampler with the collector in a detector; and puncturing the collector through a puncturing part in the detector, so that a feces sample flows into the detector, and then colour shows up on detecting strips of a detecting casse. 
         [0037]    The present invention has the following beneficial effects: the feces sampling and detecting device of the present invention can detect the sampled feces quickly, thereby avoiding feces sample from changing in nature in an interval period. 
         [0038]    The feces sampling and detecting device of the present invention has dual functions of collecting and detecting a feces sample, and a common operator can also detect without involving the medical staff. 
         [0039]    In the feces sampling and detecting device of the present invention, a puncturing part is arranged at the bottom of the detector; the puncturing part adopts a design that the diameter of a cross section increases gradually from top to bottom, so when the collector gradually presses the puncturing part from top to bottom, the bottom of the collector can be punctured, and it is ensured that the diluents with the feces sample in the collector enter the detector to be detected. 
         [0040]    The collector of the present invention is made of the compressible material, and the distance between the detecting casse of the detector and the side wall which is farthest from the casse is less than the distance between the protuberances of the handle of the feces sampler which coordinate with the casse and the side wall respectively. Thus, although the collector with the feces sampler is accommodated in the detector, the puncturing part of the detector still does not puncture the collector as long as the collector is not pressed, and unsafe usage of the device of the present invention will not be caused. So, the security of the device provided by the present invention is stilled guaranteed during transportation, sales and other unused states. 
         [0041]    The collector of the present invention can be accommodated in the detector, and the feces sampler and the collector are coordinated together detachably; the design guarantees that the placing space is saved effectively before and after using the device of the present invention. Thus, the occupied space is reduced greatly during transportation and waste disposal. 
         [0042]    The membrane of the collector of the present invention extends downwards along its through hole, the plug in the collector has a certain thickness, and the diameters of the through holes of the membrane and the plug are less than or equal to the diameter of the sampling rod; besides, the feces sampler coordinating with the collector is also provided with the sealing portion. Thus, the above double protections effectively prevents the dilutes in the collector from leaking outwards. 
         [0043]    The notch with a certain width which extends downwards from the top is provided at a top of a side wall of the detector in the present invention; the notch is convenient for an operator to press, at the same time, it can also coordinate with an automatic detecting device to use. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0044]      FIG. 1  shows an exploded view of a feces sampling and detecting device; 
           [0045]      FIG. 2  shows a section view of combination between a feces sampler and a collector; 
           [0046]      FIG. 3  shows a partial section view of a detector; 
           [0047]      FIG. 4  shows a first state view in use of the feces sampling and detecting device according to the present invention; 
           [0048]      FIG. 5  shows a second state view in use of the feces sampling and detecting device according to the present invention; 
           [0049]      FIG. 6  shows a perspective view of combination between the feces sampler and the collector according to an embodiment 2 of the present invention; 
           [0050]      FIG. 7  shows an exploded view of the feces sampler and the collector according to an embodiment 3 of the present invention; 
           [0051]      FIG. 8  shows a section view of combination between the feces sampler and the collector according to the embodiment 3 of the present invention; 
           [0052]      FIG. 9  shows an exploded view of the feces sampler and the collector according to an embodiment 4 of the present invention; and 
           [0053]      FIG. 10  shows a section view of combination between the feces sampler and the collector according to the embodiment 4 of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     Embodiment 1 
       [0054]      FIG. 1  shows an exploded view of the feces sampling and detecting device according to the present invention. The device comprises a detector  10 , a collector  20  accommodated in the detector  10  detachably, a feces sampler  30  combined at the upper part in the collector  20  detachably, a detecting casse  40  provided in the detector  10  and detecting strips  50  fixed in the detecting casse  40 . 
         [0055]    The detector  10  is a cuboid-shaped one without a head cover; and the detector  10  is a clear and colourless container made of a compressible material. 
         [0056]    The collector  20  in the detector  10  is also a cuboid-shaped one without a head cover; and the collector is made of a clear and colourless material. A lower surface of the collector  20  is sealed by aluminium foil  21 . All of the length, width and height of the collector  20  are less than that of the detector  10  respectively, namely, both bottom area and height of the collector are less than that of the detector. Thus, the collector  20  can be completely accommodated in the detector  10 . 
         [0057]    The feces sampler  30  comprises a handle  31 , a sealing portion  32  combined with a lower surface of the handle  31  and a sampling rod  33  which extends from a lower surface of the sealing portion  32  to a direction far away from the handle  31 ; an end of the sampling rod  33  which is far away from the handle  31  is provided with screw threads  34 . The screw threads  34  extend upwards from a tail end of the sampling rod  33  to a position which is approximate to a third of the whole length of the sampling rod  33 . The sum of heights of the sampling rod  33  and the sealing portion  32  is a little less than the height of the collector  20 . The sum of heights of the handle  31  and the collector  20  is less than the height of the detector  10 . 
         [0058]    The handle  31  of the feces sampler  30  is a cuboid; both the length and width of the handle  31  are larger than that of the collector  20  respectively, and the length and width of the handle  31  are less than that of the detector  10  respectively. Thus, when the whole sampling rod  33  of the feces sampler  30  enters into the collector  20 , the whole handle  31  buckles on the top of the collector  20 , and the handle  31  is provided in the detector  10 . 
         [0059]    Both the length and width of the handle  31  of the feces sampler  30  are less than that of the detector  10  respectively. Thus, the feces sampler  30  combined with the collector  20  can move with the collector  20  in the detector  10 . 
         [0060]    A circle of protuberances  36  is provided on the periphery of the handle  31  along its cross section; a distance between the protuberances  36  provided on two opposite sides of the handle is larger than a distance between two sides of the handle. 
         [0061]    The sealing portion  32  of the feces sampler  30  is a cuboid; both the length and width of the sealing portion  32  are less than that of the collector  20  respectively. Multiple sealing rings  35  are provided on the periphery of the sealing portion  32  of the cuboid; the distance between the sealing rings  35  which are provided on two opposite sides of the sealing portion is larger than or equal to the distance between two opposite sides of the collector  20  coordinating with the sealing rings  35 . Thus, when the whole sampling rod  33  of the feces sampler  30  enters into the collector  20 , the sealing ring  35  of the sealing portion  32  combines with the collector  20 , so as to prevent the sample in the collector  20  from leaking from the collector  20 , and prevent the feces sampler  30  from pulling away easily from the collector  20 . The sealing portion  32  can also be designed as a sealing portion with sealing members, like a sealing snap joint. 
         [0062]    The detecting casse  40  is approximate to a cuboid, which is just provided in the detector  10 , and clings to the side wall  11  with a relatively large area. One side of the detecting casse  40  is provided with multiple grooves  41 , and detecting strips  50  are provided in the grooves  41  of the detecting casse  40 . 
         [0063]    Two supporting bars  42  extend from two ends at the bottom of the detecting casse  40 ; the supporting bars  42  are used for standing the detecting casse  40  in the detector  10 . The supporting bars are mainly convenient for a lower end of the detecting strip in the detecting casse  40  to directly contact the diluents, which is convenient for the diluents upwards extending along the detecting strip. 
         [0064]    The sum of heights of the supporting bar  42  and the groove  41  is equal to the height of the detecting strip  50 . Thus, when the detecting strips are in the detector  10 , the bottom of the detecting strips contact the bottom surface of the detector  10 . 
         [0065]      FIG. 2  shows a section view of combination between a feces sampler  30  and a collector  20 . In the section view, the sampling rod  33  of the feces sampler  30  enters into the collector  20 . 
         [0066]    A membrane  22  is provided in the cavity of the collector  20 ; the membrane  22  is made of an elastic compressible material, including silica gel and so on. The height of the cavity formed by the membrane  22  and the top of the collector  20  is larger than that of the sealing portion  32  of the feces sampler  30 . Thus, the membrane  22  divides the cavity of the collector  20  into an upper observing cavity  24  and a lower detecting cavity  25 ; the length of the sampling rod  33  is larger than the height of the observing cavity  24 . 
         [0067]    A specified volume of diluents  23  is provided in the detecting cavity below the membrane  22  of the collector  20 ; the diluents can be either pure water or other liquid. 
         [0068]    The membranes  22  are arranged along the cross section of the cavity of the collector  20 , including four separating membranes  221  which extend from inner walls of four sides of the cavity of the collector  20  to a centre; each separating membrane  221  inclines downwards relative to the horizontal plane; the four separating membranes  221  gather together to form a through hole  222  at the centre. The diameter of the through hole  222  is less than or equal to that of a part where the sampling rod and the through hole is combined, so the sampling rod  33  and the through hole  222  form an interference fit. Besides, the diameter of the through hole  222  is equal to an external diameter of the screw threads  34  of the sampling rod  33 . 
         [0069]    When the sampling rod  33  with sampled feces enters into the diluents  23  of the collector through the through hole  222 , the feces gathering in the screw threads  34  of the sampling rod  33  are dissolved completely in the specified volume of diluents  23 . In addition, because the diameter of the through hole  222  is equal to the external diameter of the screw threads of the sampling rod  33 , the volume of all feces which can be accommodated in the screw threads can be calculated, so that a concentration of the feces in the diluents is calculated. 
         [0070]    The through hole  222  of the membrane extends towards the bottom of the collector  20  for about 0.1-0.5 cm, thereby the whole through hole  222  wraps the periphery of the sampling rod  33  when the sampling rod  33  passes through the through hole  222 , which plays a role in sealing and effectively prevents the diluents with the sample in the collector  20  from leaking. 
         [0071]    Similarly, because the diameter of the through hole  222  is equal to the external diameter of the screw threads of the sampling rod  33 , and there is a gap between the sealing portion  32  of the feces sampler  30  and the membrane  22 , when redundant feces sampled by the sampling rod  33  is left on the membrane  22 , the medical staff can observe the colour and state of the redundant feces through a transparent outer wall of the collector  20 , so as to diagnose whether the person detected suffers from disease of digestive tract. 
         [0072]    The sealing ring  35  of the sealing portion  32  of the feces sampler  30  is combined with the upper part of the cavity of the collector  20 , so the double protection of the through hole  222  and the sealing ring  35  effectively prevents the diluents  23  from leaking from the collector  20 . Even the collector  20  is transported for a long distance, the sample in the collector  20  hardly leaks therefrom. 
         [0073]    The handle  31  of the feces sampler  30  is provided above the collector  20 , and the bottom of the handle  31  is combined with a top wall of the collector  20 . 
         [0074]    The bottom of the collector  20  is sealed by the aluminium foil  21 ; the aluminium foil  21  can also be replaced by other thinner material which is easy to be punctured. 
         [0075]    The above feces sampler  30  and the collector  20  can be combined into one, so as to be used coordinating with a detecting machine as a separate feces sampling device; or, they are used coordinating with the detecting device under the operation of a specialized operator. 
         [0076]      FIG. 3  shows a partial section view of the detector  10 . Puncturing parts  13  are provided on the bottom  12  of the detector  10 , wherein the bottom faces towards the cavity of the detector. There are two puncturing parts  13  in the embodiment  1 , which are respectively arranged at two sides of the relatively long symmetry axis on the plane where the bottom of the detector  10  and the bottom of the collector are superposed. The puncturing part  13  is generally cone-shaped, and a diameter of the puncturing part  13  decreases gradually towards the collector  20  from the bottom of the detector. Optionally, the puncturing part  13  may comprises multiple identical right triangles  131 , a relatively short right-angle side of each of the right triangles  131  clings to the bottom  12  of the detector  10 , and relatively long right-angle side of each of the right triangles  131  clings to each other to form the puncturing part  13  whose diameter increases gradually from top to bottom. The sum of the heights of the combined feces sampler  30  and the collector  20  and the height of the puncturing part  13  is less than or equal to the height of the detector  10 , thereby ensuring that the feces sampling and detecting device is still a whole after the detection is finished, which is convenient for abandoning. 
         [0077]    The protuberant ribs  14  which are parallel to the side wall  11  with a relatively large area are provided in the cavity of the detector  10 ; there are two protuberant ribs  14  which are provided at two sides of the symmetry axis of the detector  10 . The protuberant ribs  14  extend upwards from the bottom of the detector  10  to a ¼-⅓ position of the height of the detector  10 . The distance between the protuberant ribs  14  and the side wall  11  with a relatively large area is equal to the thickness of the casse  40 , so the space between the protuberant ribs  14  and the side wall with a relatively large area is used for accommodating the detecting casse  40 . 
         [0078]    A notch  16  is provided at a top of a side wall  15  with a relatively small area of the detector  10 ; the width of the notch  16  is ¼-1 of the width of a thumb, and the length of the notch is approximate to the height of the puncturing part. The notch  16  is used for the operator to place a finger when pressing the collector  20  in the detector  10 . In addition, the notch  16  can also be used coordinating with the automatic detecting device, it is convenient for the detecting device to press the sampler  30  and the collector  20  to make the puncturing part  13  puncture the aluminium foil  21 , and then the diluents with the feces sample outflows to detect. 
         [0079]      FIG. 4  shows the feces sampling and detecting device of the present invention; in the device, the feces sampler  30  is provided in the collector  20 , and they are provided in the detector  10  with the casse  40  together. The sum of the thickness of the casse  40  and the width of the collector  20  is a little less than the width of the detector  30 . The width of the handle  31  of the feces sampler  30  is equal to that of the collector  20 . An arc-shaped protuberance can be provided on one side of the casse  40  facing towards the collector  20 ; when the puncturing part  13  punctures the aluminium foil  21  at the bottom of the collector  20 , and the collector  20  moves downwards, the arc-shaped protuberance extrudes the collector  20 , which is convenient for the liquid in the collector  20  to outflow from the hole formed by puncturing the aluminium foil  21 . 
         [0080]    The sum of the height of the puncturing part  13  arranged on the bottom  12  of the detector  40  and the height of the collector  20  and the height of the handle  31  of the feces sampler  30  exposed out of the collector  20  is equal to the height of the detecting device, or the sum of the height of the puncturing part  13  arranged on the bottom  12  of the detector  40  and the height of the collector  20  and the height of the handle  31  of the feces sampler  30  exposed out of the collector  20  is less than the height of the detecting device. 
         [0081]    In addition, the distance between two protuberances  36  on two opposite sides of the handle  31  is larger than the distance between the casse  40  and the side wall  11  with a relatively large area of the detector which is opposite to the casse. At the point, the protuberance  36  of the handle  31  of the feces sampler  30  is just on the top of the casse  40 , so the casse  40  just supports the whole collector and the feces sampler  30  when the handle  31  of the feces sampler  30  is not pressed, so as to prevent the collector  20  from falling free because of gravity to be punctured by the puncturing part  13 ; so the security of the device provided by the present invention is still guaranteed during transportation, sales and other unused states. 
         [0082]      FIG. 5  shows a second state view in use of the feces sampling and detecting device according to the present invention. In the state, the operator presses the handle  31  of the feces sampler  30  through the notch  16  of the detector  10 ; by pressing, the protuberances  36  of the handle  31  can move downwards through the casse  40 . When the bottom  21  of the collector  20  contacts the puncturing part  13 , the operator continues to press the handle  31 , and then the puncturing part  13  punctures the bottom  21  of the collector  20  more, so the liquid sample in the collector  20  outflows from the collector  20 . The liquid sample flows into the detector  10 , and then the liquid sample in the detector  10  climbs up along the detecting strip  50  in the casse  40 ; when the liquid sample contains substances to be detected, and the concentration of the substances to be detected reaches a detecting critical value of the detecting strip, colour shows up on the detecting strip. Thus, the medical staff can directly detect whether the person detected suffers from disease of digestive tract. 
         [0083]    After the detection is finished, the medical staff do not need to take the collector  20  out, but can directly abandon it according to the state in  FIG. 5 . The tight combination at the contact of the protuberance  36  of the handle  31  and the casse  40  can effectively prevent the diluents with dissolved sample to be detected from leaking from the detector  10 , thereby preventing environment pollution. 
       Embodiment 2 
       [0084]      FIG. 6  shows a perspective view of combination of a feces sampler  130  and a collector  120 ; the collector  120  in the present embodiment is different from the collector  20  in the embodiment 1, and the feces sampler  130  in the present embodiment is the same as the feces sampler  30  in the embodiment 1. 
         [0085]    The difference between the collector  120  in the present embodiment and the collector  20  in the embodiment 1 is that the membrane  22  is replaced by a plug  122  in the present embodiment. The plug is also made of the compressible material as the membrance, including silica gel and so on. In the present embodiment, the plug  122  is combined to the whole side wall of the collector  120  to form a plug of the collector with a certain thickness; for example, the thickness of the plug is within 0.5-2 cm. A through hole  1222  which passes through the whole plug  122  is provided at the symmetry centre of the plug  122 ; the diameter of the through hole  1222  is less than or equal to that of the sampling rod  33  of the feces sampler. Because the plug  122  has a certain thickness, when the sampling rod passes through the plug  122 , the plug  122  plays a certain role in sealing. The cavity of the collector  120  is divided into an upper observing cavity  124  and a lower detecting cavity  125  by the plug  122 ; when the feces sampler  130  is combined with the collector  120 , the two cavities are disconnected, and diluents  123  and the feces sample dissolved in the diluents  123  can not leak into the observing cavity  124 . 
         [0086]    When the feces sampler  130  is combined to the collector  120 , a certain gap is formed between the upper surface of the plug  122  and a sealing portion  132  of the feces sampler  130 . Thus, when redundant feces  126  sampled by the sampling rod  133  is left on the upper surface of the plug  122 , the medical staff can observe the colour and state of the redundant feces through the observing cavity  124  of the collector  120 , so as to diagnose whether the person detected suffers from disease of digestive tract. 
         [0087]    The settings of other parts of the collector  120  in the present embodiment are the same as that in the embodiment 1. 
       Embodiment 3 
       [0088]      FIG. 7  shows an exploded view of a feces sampler  230  and a collector  220  of the present invention. 
         [0089]    The feces sampler  230  comprises a handle  231 , a sealing portion  232  combined with the lower surface of the handle  231  and a sampling rod  233  which extends from the sealing portion  232  to a direction far away from the handle  231 . The end of the sampling rod  233  which is far away from the handle  231  is arranged with screw threads  234 . The screw threads  234  extend upwards from the tail end of the sampling rod  233  to a ⅓ position of the whole length of the sampling rod. 
         [0090]    There are screw threads  235  provided on the periphery of the sealing portion  232 . 
         [0091]    The collector  220  comprises a cavity  222  and a head cover  223  combined to the top of the cavity  222 ; there is an opening  224  provided at the head cover  223 ; there are internal screw threads  225  coordinating with the external screw threads  235  of the sealing portion  232  provided in the opening  224 ; a stop rotating block  226  is provided at the tail end of the screw threads of the opening  224 . 
         [0092]      FIG. 8  shows a section view of combination of the feces sampler  230  and the collector  220 . The head cover  223  is provided at the top of the cavity  222 ; there are internal screw threads  225  provided in the opening  224 ; the internal screw threads are combined with the external screw threads  235  of the sealing portion  232 , thereby preventing the sample in the collector  220  from leaking. 
         [0093]    The detector  210 , the casse  240  and the detecting strip  250  in the present embodiment are the same as that in the embodiment 1. 
         [0094]    The coordination relationship between the collector and the detector in the present embodiment is also the same as that in the embodiment 1. 
       Embodiment 4  
       [0095]      FIG. 9  shows an exploded view of a feces sampler  330  and a collector  320  of the present invention. 
         [0096]    The feces sampler  330  comprises a handle  331  and a sampling rod  333  which extends from the lower part of the handle  331  to a direction far away from the handle  331 . The end of the sampling rod  333  which is far away from the handle  331  is arranged with screw threads  334 . The screw threads  334  extend upwards from the tail end of the sampling rod  333  to a  1 / 3  position of the whole length of the sampling rod. 
         [0097]    The collector  320  comprises a cavity  322 , aluminium foil  321  combined to the bottom of the cavity  322  and a head cover  323  combined to the top of the cavity  322 . The aluminium foil  321  combined to the bottom of the cavity can be replaced by other material which is moulded with the cavity  322  integrally and the thickness of which is smaller than that of the cavity. A cylinder-shaped tube  325  extends from the head cover  323  towards the handle  331 ; a circular opening  324  is provided at the top of the cylinder-shaped tube  325 ; external screw threads  326  matching with the internal screw threads of the handle are provided on an outer surface of the cylinder-shaped tube  325 ; the tail end of the external screw thread  326  which is close to the head cover is provided with a stop rotating part; the stop rotating part in the present embodiment is stop rotating block  327 , thereby preventing too tight screwing while screwing the screw threads. 
         [0098]      FIG. 10  shows a section view of combination between the feces sampler  330  and the collector  320 . 
         [0099]    It can be seen from the section view that internal screw threads  332  are provided on an inner surface of the handle  331 ; the internal screw threads  332  are combined with the external screw threads  326  of the cylinder-shaped tube  325  of the head cover  323 , which makes it difficult for the sample in the collector to leak from the collector. 
         [0100]    The detector  310 , the casse  340  and the detecting strip  350  in the present embodiment are the same as that in the embodiment 1. 
         [0101]    The coordination relationship between the collector and the detector in the present embodiment is also the same as that in the embodiment  1 . 
         [0102]    Finally, to be clear, the above embodiments are only used for illustrating the technical solutions of the present invention and not intended to limit the technical solutions; the present invention can be extended to other modifications, changes, applications and embodiments on the application, therefore it is considered that all the modifications, changes, applications and embodiments shall fall within the spirit and scope of the present invention.