A device and method for collecting hair

Abstract

The present application provides a kind of device for collecting hair, comprising: cutting element for cutting hair, for hair quantification limit structure, limit structure can carry out the length quantification of hair and / or the number quantification of hair, cutting element can be moved relative to limit structure, let hair be located in limit structure, cutting element can cut off the hair on limit structure.The device for collecting hair can be directly used for quantification sampling to hair, after collecting sample, sample is directly stored in cavity, to achieve the length of sample collected to keep consistent, quantity is approximately same, ordering neat, the sample in cavity can be directly used for subsequent processing of sample;The cutting element of device is very sharp, the device is provided with baffle covering on cutting element, can avoid cutting element directly exposed to the outside, reduce the possibility of operator being cut by cutting element.

Description

TECHNICAL FIELD

[0001] The present application relates to a collection device, especially in the field of rapid diagnosis, the device for collecting hair as a sample for testing. BACKGROUND

[0002] The following background description is only some background knowledge, and does not limit the present application.

[0003] Medical or home rapid detection devices are usually used to detect whether the sample contains the analyzed substance, such as early pregnancy detection, drug detection, etc. The detection device has a collection cavity for collecting the sample to be tested, and a test element is installed in the collection cavity. The sample to be tested enters the collection cavity through the opening of the collection cavity and contacts the test element, and the test element detects the sample to be tested. The test element has a detection area for displaying the detection result, and the detection result can be read from the outside of the collection cavity through the side wall of the collection cavity.

[0004] When the sample is a hair sample, it is difficult to detect. First, the hair contains the sample, but it is necessary to extract the analyzed substance from the hair by physical or chemical means to prepare it into a solution form for the next step of analysis. The traditional method is to cut the hair with scissors, then put it into a sample bag, and then send it to the detection agency. After the detection agency receives the sample, it still needs to be processed, such as cutting or arranging, and then chemical reagent treatment to dissolve the analyzed substance, which brings a lot of inconvenience to the processing of the sample.

[0005] Currently, the analyzed substance (such as drug abuse) in the hair sample detection is generally colloidal gold, enzyme-linked immunoassay, or liquid or gas chromatography. But it needs to be treated with chemical reagents to extract the analyzed substance from the hair.

[0006] Therefore, a collection device for collecting hair samples is needed to improve the sample processing process and can be directly used for extraction of the analyzed substance. SUMMARY

[0007] To solve the above problems, the present application provides a device for collecting hair, which is simple in structure, easy to manufacture, can quantitatively obtain hair samples, and the obtained samples can be directly used for extraction of the analyzed substance or directly tested.

[0008] To achieve the above purpose, the technical solution adopted by the present application is a device for collecting hair, comprising: a cutting element for cutting hair, a limiting structure for quantifying hair, the limiting structure can quantify the length of hair and / or the number of hair, the cutting element can move relative to the limiting structure, the hair is located in the limiting structure, and the cutting element can cut the hair on the limiting structure.

[0009] Further, the limiting structure is a hole.

[0010] Further, the device further comprises a fixed part, and the hole is arranged on the fixed part.

[0011] Further, the hole is provided with two holes.

[0012] Further, the device further comprises a cavity for storing hair, and the hair falls into the cavity after being cut by the cutting element.

[0013] Further, the device further comprises a cavity for storing hair, and the cavity is arranged on the fixed part.

[0014] Further, the two holes are respectively arranged on two sides of the cavity.

[0015] Further, the device comprises two cutting elements.

[0016] Further, the device further comprises a moving part, and the cutting element is arranged on the moving part.

[0017] Further, the device further comprises a fixed part, and the hole is arranged on the fixed part, and the fixed part is provided with a cavity for storing hair, and the moving part can cover the cavity.

[0018] Further, the cavity is rotationally connected with the moving part.

[0019] Further, the fixed part comprises a first fixed part and a second fixed part, and the first fixed part is detachably connected with the second fixed part.

[0020] Further, the bottom of the second fixed part is provided with two symmetrical arc surfaces.

[0021] Further, an elastic element is arranged between the moving part and the cavity.

[0022] Further, the moving part and the cavity are provided with a locking structure, and the locking structure comprises a first buckle and a second buckle, and when the moving part covers the cavity, the first buckle and the second buckle are buckled; when the first buckle and the second buckle are unlocked, the moving part and the cavity are separated.

[0023] Further, the device further comprises a baffle, and the baffle is arranged on the moving part and located outside the cutting element.

[0024] Further, the device further comprises a fixed part, and the hole is arranged on the fixed part, and the fixed part is provided with a groove matched with the baffle.

[0025] Further, the moving part is provided with a cutting element capable of slidingly adjusting the position.

[0026] Further, the moving part is provided with a fixing groove, and the cutting element is fixed in the fixing groove.

[0027] Further, the cover is provided with a sliding groove, and the sliding groove is provided with a sliding block, and the sliding block is connected with a cutting element.

[0028] Further, the cavity is provided with a partition plate, the partition plate is provided with a hole, and the partition plate is provided with a displacement slot.

[0029] Further, the partition plate is fixed in the cavity or the partition plate can slide in the cavity.

[0030] Further, the sliding groove is provided with a limiting protrusion, the limiting protrusion can position the sliding block, the cavity is provided with a partition plate, the partition plate is provided with a displacement slot, and when the sliding block is positioned by the limiting protrusion, a cutting element connected with the sliding block is aligned with the displacement slot.

[0031] Further, the sliding block is provided with a sliding groove part, the sliding groove part is matched with the shape of the sliding groove, the sliding groove part is provided with a mounting groove, the sliding groove part of the sliding block is detachably connected with an adapter, the adapter is provided with a first mounting part, the first mounting part can be inserted into the mounting groove, the sliding groove is clamped between the sliding groove part of the sliding block and the adapter, and the adapter is further provided with a second mounting part, the second mounting part is used for connecting the cutting element, the second mounting part is in a U shape, and the U-shaped structure of the second mounting part clamps the cutting element in the middle.

[0032] A method for collecting hair, the method provides a device for collecting hair, the device comprises a limiting structure for hair quantification and a cutting element for cutting hair, and the method comprises the following steps: placing the hair in the limiting structure for hair quantification and cutting the hair by the cutting element.

[0033] Further, the device further comprises a cavity for collecting hair, and after the hair is cut by the cutting element, the hair falls into the cavity.

[0034] Further, the method further comprises the following steps: taking out the hair for subsequent processing, and the subsequent processing comprises extracting an analyte in the hair by using a chemical reagent.

[0035] Further, the analyte comprises a drug abuse small molecule substance.

[0036] Advantages of the present application:

[0037] 1. The device can be directly used for sampling the hair, and after the sample is collected, the sample is directly stored in the cavity, so that the length of the collected sample is consistent, the quantity of the collected sample is approximately the same, and the order of the collected sample is neat, and the sample in the cavity can be directly used for subsequent processing of the sample.

[0038] 2. The cutting element of the device is very sharp. The device is equipped with a baffle that covers the cutting element to prevent the cutting element from being directly exposed and reduce the possibility of the operator being accidentally injured by the cutting element.

[0039] 3. The device is equipped with elastic elements and a locking structure, which can automatically open when the collection device is opened and automatically lock when the collection device is closed.

[0040] 4. The fixing components include a detachable first fixing component and a second fixing component, which facilitates the removal of hair samples. The bottom of the second fixing component has two curved surfaces, which allow the operator to easily remove the second fixing component by applying force with their fingers. At the same time, the two curved surfaces also have an effect on the interior of the second fixing component, and the curved surfaces can play a guiding role, gathering the cut hair samples to the middle position inside the second cavity.

[0041] 5. The cover is equipped with a sliding groove, in which a sliding slider is installed. The slider is connected to a cutting element. The movement of the slider can drive the cutting element to move, which can cut hair of different lengths, making it highly practical.

[0042] 6. The cavity is equipped with a partition, which divides the cavity into two parts: a first fixing component and a second fixing component. The function of the partition is to provide support when cutting hair samples of a specified length. At the same time, the first fixing component and the second fixing component can be used to store hair samples of different lengths. Attached Figure Description

[0043] Figure 1 This is a perspective view (open state) of the collection device in one embodiment of the present invention;

[0044] Figure 2 This is the present invention. Figure 1 A three-dimensional structural diagram of the collection device shown (closed state);

[0045] Figure 3 This is a perspective view (in an exploded state) of a collection device according to another embodiment of the present invention;

[0046] Figure 4 This is the present invention. Figure 3 A three-dimensional structural diagram of the collection device shown (closed state);

[0047] Figure 5 This is the present invention. Figure 3 A three-dimensional structural diagram of the collection device shown (in the open state);

[0048] Figure 6 yes Figure 4 The left view;

[0049] Figure 7 This is the present invention.Figure 1 Fig. 11 is a perspective view of the collection device of the present application in an open state;

[0050] Figure 8 Fig. 12 is a perspective view of the collection device of the present application in a closed state;

[0051] Figure 9 Fig. 13 is a perspective view of the collection device of the present application in an open state; Figure 8 Fig. 14 is a perspective view of the collection device of the present application in a closed state;

[0052] Figure 10 Fig. 15 is a perspective view of the collection device of the present application in an open state;

[0053] Figure 11 Fig. 16 is an exploded view of the collection device of the present application; Figure 10 Fig. 17 is a perspective view of the collection device of the present application in an open state;

[0054] Figure 12 Fig. 18 is a perspective view of the collection device of the present application in a closed state; Figure 8 Fig. 19 is a partial enlarged view of the "A" area of Fig. 18;

[0055] Figure 13 Fig. 20 is a bottom view of the collection device of the present application. Figure 8 DETAILED DESCRIPTION

[0056] The following further describes the structural or technical terms related to the present application. If not specifically indicated, the terms are understood and interpreted according to the general terms commonly used in the art.

[0057] Detection

[0058] Detection means to test or assay whether a substance or material is present. The substance or material can be, for example, but not limited to, a chemical, an organic compound, an inorganic compound, a metabolite, a drug or a drug metabolite, an organic tissue or a metabolite of an organic tissue, a nucleic acid, a protein, or a polymer. In addition, detection can also mean to test the amount of a substance or material. Assay can also mean immunoassay, chemical assay, enzymatic assay, etc.

[0059] Sample

[0060] In the present application, the sample collected by the collection device can be a sample in a solid state. The sample can be taken from a human body, an animal, a plant, nature, etc. The sample taken from a human body can be, for example, a solid sample such as hair. The sample taken from a plant can be, for example, a solid sample such as roots, stems, leaves, etc.

[0061] Here, the sample mainly refers to a hair sample, and the hair sample is collected by the present device as an assay sample. The hair refers to the hair of a mammal, which can be hair on the head, a beard, or hair on any part of the body, such as chest hair, leg hair, or hair around the genital organs. In particular, the present application generally refers to hair on the head.​

[0062] Test element

[0063] Test element refers to a component capable of detecting an analyte in a sample to be tested. The detection of the analyte by the test element can be based on any technical principle, such as immunology, chemistry, electricity, optics, molecular science, physics, etc. The test element of the present application can be one or a combination of two or more test elements. The test element has a detection zone for displaying a detection result after detection.

[0064] A common form of the test element is a test strip. The detection of the sample to be tested by the test strip can be based on the principle of immunoassay or chemical analysis, and can adopt a non-competitive or competitive analysis mode. The test strip includes, in order, a sample application zone, a reagent zone, and a test zone. After the sample to be tested is applied to the sample application zone, it flows to the reagent zone by capillary action, reacts with the reagent in the reagent zone, and then continues to flow to the test zone by capillary action, which produces a signal or no signal, thereby indicating the presence or absence of the analyte in the sample to be tested. For example, if a T line (Test Line) appears in the test zone, it indicates that the analyte is not present in the sample to be tested; if the T line does not appear in the test zone, it indicates that the analyte is present in the sample to be tested. Some test strips also have a control zone, which is located after the test zone, and the sample flowing through the test zone continues to flow to the control zone, which is used to determine whether the test result of the test zone is valid. For example, in some test strips, only when a C line (Control Line) appears in the control zone, can it be indicated that the test result of the test zone is valid, otherwise it indicates that the test result of the test zone is invalid. In the present application, when the detection result of the test element can be read only by the test zone, the detection zone of the test element is the test zone described above; when the detection result of the test element needs to be judged in combination with the signals produced by the test zone and the control zone, the detection zone of the test element includes the test zone and the control zone. Of course, in some cases, the detection result of the test element needs to be judged in combination with the signals of other regions, and then the detection zone also includes the other regions. That is, in the present application, the complete detection result can be read through the detection zone of the test element. Generally, the test element includes at least a detection region, through which it can be determined whether the analyte is present in the sample. For example, through the appearance of color, the change of color, which can generally be seen by the naked eye, can also be read by scanning equipment or by taking a photograph to read the test result. Or have the appearance of fluorescence, or the appearance of radiation, etc. The test result of the detection region is read by the equipment instrument.

[0065] The test element is generally composed of a porous water-absorbing material, such as filter paper, glass fiber, polyester film, nylon film, paper, non-woven fabric, etc. Any material that can absorb water is acceptable.

[0066] The test element herein is used to test the analyte substance in the hair sample, for example, a drug substance. In some ways, it is used to test the analyte substance extracted or separated from the hair sample.

[0067] The method of processing the hair sample can refer to the method described in the following patent documents, for example, the reagent for ablation of hair described in Chinese invention patent application, publication number CN108844922, the extraction solution described in, for example, Chinese invention patent application, publication number CN109828039A, or the extraction solution of the analyte substance in the hair described in publication number CN110044670A. When the hair sample is detected, the hair is first collected, then the collected hair is processed, and the analyte substance is extracted or dissolved from the hair sample, and then subsequent detection is performed. Such detection can be any detection, for example, immunoassay, chemical detection, gas chromatography, liquid chromatography, genetic detection, liquid chromatography-gas chromatography combined detection.

[0068] Analyte substance

[0069] Examples of analytes that can be detected using the present application include small molecules including drugs of abuse. "Drug of abuse" (DOA) refers to the use of a drug (usually one that acts to numb the nerves) for non-medical purposes. The use of these drugs can result in physical and mental harm, dependency, addiction and / or death. Examples of drugs of abuse include cocaine; amphetamines AMP (e.g., black beauties, white cross amphetamine tablets, dexedrine, dexedrine tablets, Beans); methamphetamine MET (crank, meth, crystal, speed); barbiturates BAR (e.g., Valium, Roche Pharmaceuticals, Nutley, New Jersey); tranquilizers (i.e., sleep aids); lysergic acid diethylamide (LSD); downers (goofballs, barbs, blue devils, yellow jackets, Quaaludes); tricyclic antidepressants (TCAs, e.g., imipramine, amitriptyline and chlordiazepoxide); dimethoxy-methylamphetamine (MDMA); phencyclidine (PCP); tetrahydrocannabinol (THC, pot, dope, hash, weed, etc.); opiates (i.e., morphine MOP or, heroin, cocaine COC;, methadone, hydrocodone); anxiolytics and sedative-hypnotics, which are a class of drugs primarily used to reduce anxiety, tension, fear, stabilize mood, and have a sedative-hypnotic effect, including benzodiazepines BZO, atypical BZs, fused diazepines NB23C, benzodiazepines, ligands for BZ receptors, open-chain BZs, diphenylmethane derivatives, piperazine carboxylates, piperidine carboxylates, quinazolinones, thiazine and thiazole derivatives, other heterocyclics, imidazole-type sedative / pain relievers (e.g., hydrocodone OXY, methadone MTD), propylene glycol derivatives-carbamates, aliphatic compounds, anthracene derivatives, etc. The test kits of the present application can also be used to detect drugs that are used for medical purposes but are prone to overdose, such as tricyclic antidepressants (imipramine or the like) and acetaminophen. These drugs are metabolized into small molecules that are present in bodily fluids such as blood, urine, saliva, sweat, etc. or in some cases, the small molecules are present in the body.

[0070] These drug substances are also present in hair samples, and the analyte substances of the present application are generally drug substances.

[0071] Cutting element

[0072] Hair detection has a longer traceability period in drug detection, mainly because the mechanism of drug retention in hair is significantly different from that in biological samples such as blood and urine. The process of drug entering urine and blood is a continuous metabolism and rapid degradation process, and drug traces will completely disappear within a few days. After the drug enters the human body, it circulates into the hair follicle with the blood, and the drug body and its metabolites are fixed by the keratin protein in the hair and stably retained in the hair. After the hair recording drug information grows out of the scalp, the drug and its metabolites will migrate from the root end to the tip end of the hair as the hair grows. Therefore, by segment testing, the drug use history of the person being tested can be traced back. How long can the longest drug use history be detected? This mainly depends on the length of the hair. As long as the hair is long enough, for example, a few tens of centimeters of hair in women, even the drug use in the past few years can be reflected. According to the growth rate of yellow people's hair and the detoxification time, a certain section of hair at the root end can be cut off for targeted use, thereby reflecting the conduct of the detoxification personnel in a certain period of time.

[0073] Therefore, in order to obtain more accurate position hair, for example, in drug detection, the closer to the skin position, the more it can represent whether the drug is recently taken. As the hair grows, if the hair away from the skin contains drugs, it indicates that the drug is taken in an earlier period. The current traditional method uses scissors to cut hair samples, which generally starts from 3 mm away from the skin. Different lengths of samples can indicate the length of drug use history, such as 3 cm, 6 cm, 7 cm, 8 cm, 10 cm, etc. Different lengths can be used to estimate the length of drug use history. The current traditional method of cutting hair samples with scissors has the disadvantages of difficult operation and easy skin injury. At the same time, using scissors to cut hair samples can easily cut a large amount of hair without attention. In addition, when cutting hair, the hair needs to be cut twice to complete the sampling, which is relatively cumbersome.

[0074] In the present application, the cutting element 107 is used to cut (cut) and collect the hair sample. The cutting element 107 can be a blade with a sharp edge on one side. The cutting element 107 is provided with at least one, which can complete the simple cutting of the hair, especially the hair sample at the tip of the hair, which can be cut once. Preferably, the cutting element 107 is provided with two, which is suitable for taking the hair sample at the root of the hair, and can directly cut off the hair in one cutting process, which is simple and convenient. At the same time, the two cutting elements 107 are also suitable for sampling the hair sample at the tip of the hair, as long as only one cutting element 107 is used to cut the hair sample during sampling.

[0075] In some embodiments, the cutting element 107 is adjustable in position, and the adjustable cutting element 107 is mainly for the case of having two cutting elements 107, by adjusting the distance between the two cutting elements 107, the cutting of different length of hair is achieved. Generally, it is enough to have one of the two cutting elements 107 adjustable, for example, the cutting element 107 attached to the cutting head 106 is adjustable, and the other cutting element 107 is fixed. Figure 8 , the cutting element 107 attached to the cutting head 106 is adjustable, and the other cutting element 107 is fixed. Figure 9 It is unnecessary to have both of the two cutting elements 107 adjustable, which will increase the production cost of the device.

[0076] Preferably, the cutting element 107 is provided with a patch for covering the cutting element 107, and the size of the patch matches the size of the cutting element 107, which means that the size of the patch is consistent with the cutting element 107, or the patch is slightly larger or smaller than the cutting element 107, and it can be that a little blade of the cutting element 107 is exposed, because the cutting element 107 is very sharp, the patch is used to avoid the cutting element 107 exposed to the outside, and reduce the possibility of the operator being injured by the cutting element 107. Further, the patch is located on the side of the cutting element 107 that can contact the operator's hand.

[0077] Limiting structure

[0078] Hair samples are different from ordinary body fluid samples, in which the analyte is generally dissolved or included in the body fluid sample, and can be directly used for testing or detection after collection. However, for hair samples, in the above-mentioned traditional hair sampling method, it is difficult to quantify the cut hair during the process of cutting the hair sample with scissors, and in order to meet the detection requirements of the cut hair sample, the operator usually cuts more hair than needed, and then cuts the cut hair into segments to cut the hair into a specified length required for detection. Due to the softness of the hair, it is not easy to achieve segmented cutting of different sizes, and after cutting, a weighing device is used to weigh the sample, and the excess hair sample is removed, and finally the processed hair is collected, which is a very cumbersome process. The limiting structure is used to avoid the cumbersome operations of the operator for weighing the hair and secondary cutting of the hair.

[0079] In the present application, the limiting structure can be used for length confirmation, length adjustment, and / or quantity confirmation, quantity adjustment. The length confirmation is mainly used for determining the length of the cut hair, the length adjustment is mainly used for adjusting the length of the cut hair, the quantity confirmation is mainly used for adjusting the quantity (number) of the cut hair, and the quantity adjustment is mainly used for adjusting the quantity of the cut hair. The following will be described in detail:

[0080] The limiting structure for determining the cutting amount includes a hole 105, which is a half-opened crescent shape or a half-circle shape. When taking a hair sample, a bunch or a strand of hair is placed in the hole 105, and a cutting element 107 cuts a section of the hair along the hole 105 as a sample for detection. The hole 105 functions to quantify the hair, because the hole 105 has a fixed size, the amount of hair that can be accommodated in the hole 105 is also fixed, which can be used to roughly limit the number of hairs. In this way, the traditional hair quantification method of weighing can be replaced. Preferably, the hole 105 for limiting the amount of hair can be of any shape, such as a half-opened shape, a through-hole shape, a square shape, or a circular shape. The hole 105 is not limited to a half-circle shape, as long as the hole 105 and the cutting element 107 can generate sufficient shearing force to cut the hair when the cutting element 107 is in motion. Since the hair sample is usually soft and difficult to cut, in order to generate sufficient shearing force between the hole 105 and the cutting element 107, the cutting element 107 is close to the hole 105, and the distance between them is generally within 5 mm, and further, the distance is within 2 mm.

[0081] In some ways, a limiting structure for adjusting the cutting amount is provided, with reference to the accompanying drawings Figure 7 The size of the hole 105 can be adjusted, and the adjustment of the size of the hole 105 can achieve the adjustment of the amount of hair sample (the number of hairs). Specifically, the collection device includes a fixed component 70, and a movable plug plate 99 is arranged on the fixed component 70. The hole 105, i.e., the limiting structure, is formed between the movable plug plate 99 and the fixed component 70. By moving the movable plug plate 99 up and down, the size of the hole 105 can be adjusted, thereby adjusting the amount of hair cutting. Further, if two limiting structures are arranged on the cavity 108, then two movable plug plates 99 are correspondingly arranged, and the two movable plug plates 99 need to be adjusted together to match the amount of hair that can be accommodated in the two limiting structures. Preferably, a connecting plate (not shown in the figure) is arranged between the two movable plug plates 99, and the two movable plug plates 99 can be adjusted simultaneously by adjusting the connecting plate.

[0082] The limiting structure not only can confirm and adjust the amount of hair, but also can determine the cutting length. In some ways, a limiting structure for determining the cutting length is provided, as shown in Figure 1As shown, when there are two cutting elements 107, the limiting structure includes two corresponding holes 105, and in this case, the distance between the two holes 105 is determined, and the cutting elements 107 are arranged close to the holes 105, and by controlling the downward movement of the two cutting elements 107, the two cutting elements 107 cut the hair through the two holes 105, and since the distance between the two holes 105 and the distance between the two cutting elements 107 are determined, the length of the cut hair is also determined. That is, the size of the hole 105 completes the quantitative cutting of the hair, and the distance between the two holes 105 and the distance between the two cutting elements 107 complete the quantitative cutting of the length of the hair. By using the above technical scheme, when collecting hair samples, the length of the cut hair can be kept consistent, the number of the cut hair can be roughly the same, and the order of the cut hair can be neat, so that the collected hair samples have consistency.

[0083] In some ways, a limiting structure for adjusting the cutting length is provided, which corresponds to the adjustable cutting element 107 described above, and the limiting structure further includes a hole 105 with an adjustable position. After adjusting the position of the cutting element 107, the position of the hole 105 is adjusted accordingly (if the position of the hole 105 is not adjusted, there may be a problem of insufficient shearing force due to the softness of the hair). Alternatively, in some other ways, the limiting structure includes three or more holes 105, and these holes 105 are on the same straight line, and by adjusting the cutting element 107 to align with different positions of the hole 105, the cutting distance is adjusted.

[0084] Moving part

[0085] Since the cutting element 107 is relatively sharp, especially when the cutting element 107 is a blade, the thickness is relatively thin, and during the cutting process of the cutting element 107, the operator's hand should be avoided from directly contacting the cutting element 107, so the moving part is introduced, which is used to fix the cutting element 107, and by controlling the movement of the moving part, the cutting element 107 completes the cutting.

[0086] Preferably, the moving part is the cover 102, and the cover 102 is provided with a fixing groove 71 for fixing the cutting element 107, and the cutting element 107 fixed in the fixing groove 71 cannot move relative to the fixing groove 71. Generally, the number of fixing grooves 71 corresponds to the number of cutting elements 107, that is, when the cutting element 107 is provided with one, the fixing groove 71 is provided with one; and when the cutting element 107 is provided with two, the fixing groove 71 is correspondingly provided with two. Since the position of the fixing groove 71 on the cover 102 is determined and cannot be changed, the distance between the two cutting elements 107 is also determined, as shown in the accompanying drawings. Figure 1

[0087] ​Preferably, the cover 102 is provided with a baffle 97 capable of covering the cutting element 107. The baffle 97 has the same function as the patch mentioned above, i.e. to reduce the possibility of the operator being accidentally injured by the cutting element 107. The size of the baffle 97 is the same as or larger than that of the cutting element 107, and the baffle 97 is located outside the cutting element 107.

[0088] In some modes, the above-mentioned "one adjustable cutting element 107 and one fixed cutting element 107" can be arranged on the cover 102, as shown in Figures 8-9 The cover 102 is provided with a fixed groove 71 in which a fixed cutting element 107 is arranged. The cover 102 is provided with a sliding groove 86 in which a sliding block 85 is arranged. The sliding block 85 is provided with a cutting element 107. The sliding block 85 is moved to drive the cutting element 107 to move, thereby cutting the hair of different lengths. Preferably, the cover 102 is marked with a size, which facilitates the operator to control the sliding block 85 to slide to different positions to adjust the cutting size.

[0089] Preferably, referring to Figure 10 , 11 The sliding block 85 is provided with a sliding groove part 84 which is matched with the sliding groove 86 to facilitate the sliding of the sliding block 85. The sliding groove part 84 is provided with a mounting groove 83. The sliding groove part 84 of the sliding block 85 is detachably connected with an adapter 82. The adapter 82 is provided with a first mounting part 79 which can be inserted into the mounting groove 83. When assembled, the sliding groove 86 needs to be clamped between the sliding groove part 84 of the sliding block 85 and the adapter 82. The adapter 82 is further provided with a second mounting part 80 which is used to connect the cutting element 107. The second mounting part 80 is in the shape of U, and the cutting element 107 is clamped therebetween.

[0090] Preferably, referring to the attached Figure 12 The two sides of the sliding groove 86 are provided with two limiting protrusions 74. The four limiting protrusions 74 can position the sliding block 85 in the sliding groove 86. The purpose is to remind the operator that the distance between the two cutting elements 107 has reached a preset value, such as 3 cm, 6 cm, 7 cm, 8 cm, 10 cm, etc.

[0091] The fixed part

[0092] The limiting structure is arranged on the fixed part 70, which is a carrier for placing the hair. Specifically, the hair is placed on the limiting structure of the fixed part 70. Preferably, the fixed part 70 is provided with a cavity 108 for collecting or storing the hair sample. When the cutting element 107 moves downward, the hair is cut by the limiting structure, and the hair falls into the cavity 108 to obtain the hair sample. The cavity 108 and the hair sample therein can be sent to a testing agency for further processing.

[0093] Preferably, the fixed part 70 is provided with a groove 96 matched with the baffle 97 (cutting element 107), which can accommodate the cutting element 107. The groove 96 is in communication with the limiting structure on the fixed part 70. When the cover 102 covers the cavity 108, the baffle 97 is clamped into the groove 96 to limit the cutting depth of the cutting element 107, which is practical, safe and convenient.

[0094] In some other ways, the fixed part 70 is designed to be detachable, and the cavity 108 can also be designed to be detachable. For example Figures 3-6 As shown, the fixed part 70 is assembled by two parts, and the cavity 108 therein is also composed of two cavities. The fixed part 70 includes a first fixed part 91 and a second fixed part 90, which are detachably connected. Specifically, the first fixed part 91 is provided with a latch 89, and the second fixed part 90 is provided with a corresponding insertion hole 88. The bottom of the second fixed part 90 is provided with two arc surfaces 87, which can facilitate the operator to take down the second fixed part 90 by finger force. At the same time, the two arc surfaces 87 also have an influence on the second cavity in the second fixed part 90. The arc surfaces 87 can play a guiding role to collect the cut hair sample to the middle position of the second cavity.

[0095] Preferably, for example, as shown in the accompanying drawings Figure 13 Preferably, the bottom of the fixed part 70 is provided with a flat or inwardly recessed area 73, which helps the cavity 108 to be placed horizontally on the desktop. The inwardly recessed area 73 helps the operator to hold the device stably.

[0096] In some ways, in view of the above-mentioned "one cutting element 107 with adjustable position and one fixed cutting element 107", for example Figure 9As shown, the cavity 108 is provided with a partition plate 78, which divides the cavity 108 into two parts, a third cavity 76 and a fourth cavity 75. The partition plate 78 provides support for cutting hair samples of a specified length. Further, the partition plate 78 is also provided with a limiting structure, and all limiting structures in the device are located on the same line. The partition plate 78 is provided with a clearance slot 77, which mainly provides clearance for the cutting element 107 during cutting of hair samples of a specified length, so as to avoid collision between the cutting element 107 and the partition plate 78.

[0097] Preferably, the partition plate 78 is not adjustable. When the sliding block 85 slides into the area formed by the four limiting protrusions 74, the cutting element 107 connected to the sliding block 85 is just opposite to the clearance slot 77.

[0098] Preferably, the partition plate 78 is adjustable. It can slide in the cavity 108 according to the position of the adjustable cutting element 107, so that the cutting element 107 connected to the sliding block 85 is just opposite to the clearance slot 77, thereby enhancing the flexibility during cutting of hair.

[0099] Preferably, the partition plate 78 is not adjustable. The cavity 108 is provided with two or more partition plates 78, which divide the cavity 108 into three or more parts. The operator can adjust the position of the cutting element 107 according to the length of the hair sample to be cut, so that the cutting element 107 is aligned with the clearance slot 77 of the corresponding partition plate 78, and then the cutting can be performed. Further, the sliding groove 86 is provided with limiting protrusions 74 corresponding to the number of partition plates 78. One partition plate 78 corresponds to four limiting protrusions 74. If the cavity 108 is provided with three partition plates 78, then the sliding groove 86 is provided with twelve limiting protrusions 74.

[0100] Moving part and fixed part

[0101] The moving part and the fixed part are two terms used to name different parts in the device. Here, moving and fixed are two relative terms. Since the moving part is provided with a cutting element, we hope that the cutting element moves during cutting, so it is named as a moving part. The fixed part is mainly used to store hair samples, and we hope that the part for storing hair is not movable, so it is named as a fixed part. It should be noted that the fixed part is not fixed, and the moving part is not always moving. As long as the fixed part and the moving part can move relative to each other, they can be connected together.

[0102] Preferably, the fixed part and the moving part are connected together, which can increase the integrity of the device, and the parts are not loose, so that the parts are not easy to be lost. Specifically, in the attached Figures 1-6 , attached Figures 8-9In this design, the cover 102 (moving part) is connected to the fixed part 70. Various connection methods are available, such as sliding fit or rotating fit (hinged). In the figure, the cover 102 and the fixed part 70 are hinged together via a pivot 98, allowing the cover 102 to open or close. When the cover 102 is open, the hair sample is positioned on the limiting structure (hole 105). During the closing process of the cover 102 and the cavity 108, the cutting element 107 and the limiting structure form a scissor-like shape. The relative movement of the cutting element 107 generates shearing force, allowing the cutting element 107 on the cover 102 to cut the hair sample. Simultaneously, the cut hair is stored in the cavity 108. When the cover 102 closes the cavity 108, leakage of the hair sample from the cavity 108 is prevented. The processed hair sample and device can be directly sent to a testing center without weighing and can be used directly for subsequent processing steps, such as chemical reagent extraction.

[0103] Preferably, a spring element can also be provided between the cover 102 and the fixing member 70. This spring element can be a spring 103, which has the ability to allow the cover 102 and the fixing member 70 to return to their natural positions. For example, when the cover 102 is open, the spring 103 is in a relaxed state, and when the cover 102 is closed (when it is closed 108), the spring 103 is in a tense state. Alternatively, it can be understood that the spring 103 keeps the cover 102 in a relaxed state of natural opening, so that the cover 102 is not closing the cavity 108 and is in an open state. When it is necessary to close, the spring force needs to be overcome to allow the cover 102 to close onto the cavity 108.

[0104] In some other ways, such as appendix Figure 4 Appendix Figure 5 In this design, the cover 102 and the fixing component 70 include a cooperating locking structure, which includes a first latch 95 and a second latch 94. When the cover 102 is closed to the cavity 108, the first latch 95 and the second latch 94 engage; when the first latch 95 and the second latch 94 are unlocked, the cover 102 separates from the cavity 108. Combined with the aforementioned spring 103, this also enables the cover 102 and the fixing component 70 to open automatically upon unlocking, facilitating the operator to remove the trimmed hair sample from the cavity 108. Furthermore, the first buckle 95 and the second buckle 94 are respectively disposed on the cover 102 and the fixing component 70. The first buckle 95 is provided with a protrusion 93 with a triangular cross-section. The second buckle 94 is provided with a square hole 92 that matches the protrusion 93. The hole 92 can lock the protrusion 93. If the first buckle 95 and the second buckle 94 need to be unlocked, simply pry the second buckle 94 outward or press the first buckle 95 inward. The protrusion 93 will separate from the hole 92, and the cover 102 will open automatically under the action of the spring 103.

[0105] Collecting device

[0106] The collecting device is composed of one or more of the cutting element, the limiting structure, the moving part and the fixing part, wherein the cutting element is essential, and the rest of the limiting structure, the moving part and the fixing part and their respective technical solutions are optional. The selection of the above structure or part will bring corresponding technical effects, improve the overall performance of the collecting device, and accordingly increase the production cost. Therefore, the selection can be made according to the actual production.

[0107] The collecting device composed of the cutting element, the limiting structure, the moving part and the fixing part will have the advantages of each structure / part. The device can realize efficient collection or collection of hair samples, ensure the consistency and accuracy of the collected samples, and realize the purpose of quantification.

[0108] Preferably, the collecting device has multiple different models, and the collecting devices of different models are different in size, including different sizes of the limiting structure, different distances between two limiting structures, etc. The operator can select the corresponding model of the collecting device for sampling according to the detection requirements. When the collecting device is selected, the length and quantity of the hair are determined accordingly, so as to meet the detection needs of a certain weight of hair sample. The defect of re-weighing after traditional scissors cutting is solved.

[0109] Meanwhile, the sampling part of the collecting device is not limited. For example, if a hair sample at the root position of a certain section of hair is needed, only the side wall 109 of the fixing part 70 needs to be tightly attached to the scalp, the hair needs to be straightened and moved to the limiting structure, and then the cover body 102 needs to be pressed to close. If a hair at the tip position of a certain section of hair is needed, it is even easier to straighten and move the specified section of hair to the limiting structure, and then press the cover body 102 to close.

[0110] Preferably, the top position of the cover body 102, the middle position of the bottom of the second fixing part 90 and the two ends of the second fixing part 90 are provided with striped areas, which can be used to increase the friction between the device and the hand.

[0111] In order for the technical personnel to better understand the technical solutions of the present application, the following will briefly describe how to use the collecting device in Figures 8-13 Since the collecting device provided in Figures 8-13 is relatively complex, the technical personnel in the art can easily understand the collecting device in Figures 1-7 after understanding the collecting device. It is assumed that in the collecting device, when the slider 85 is in the area composed of the four limiting protrusions 74, the distance between the two cutting elements 107 is 12 cm; when the slider 85 moves to the rightmost position, the distance between the two cutting elements 107 is 28 cm.

[0112] The first use method is introduced as follows, mainly for the hair sample of the person with long hair, and the hair sample is as long as possible. (The length of the hair of the person is greater than the maximum distance between the two cutting elements 107, which is 28 cm in this case.) The operator moves the slider 85 on the sliding groove 86 to move the cutting elements 107 to the rightmost position, straightens the hair to be sampled on the limiting structure, and then covers the cover 102. The two cutting elements 107 cut the hair during the movement. Due to the presence of the partition plate 78, the cut hair is supported on the limiting structure, and the operator removes the excess hair (hair exposed outside the collection device). The hair sample is completed, and the length of the hair sample is 28 cm.

[0113] The second use method is introduced as follows, mainly for the hair sample of the person with long hair, and the hair sample is as short as possible. (The length of the hair of the person is greater than the maximum distance between the two cutting elements 107, which is 28 cm in this case.) The operator moves the slider 85 to the area formed by the four limiting protrusions 74, straightens the hair to be sampled on the limiting structure, and then covers the cover 102. The two cutting elements 107 cut the hair during the movement. The cut hair falls into the first fixed part 76, and the operator removes the excess hair (hair exposed outside the collection device). The hair sample is completed, and the length of the hair sample is 12 cm.

[0114] The third use method is introduced as follows, mainly for the hair sample of the person with long hair, and two different lengths of hair are sampled. (The length of the hair of the person is greater than the maximum distance between the two cutting elements 107, which is 28 cm in this case.) First, the operator moves the slider 85 on the sliding groove 86 to move the cutting elements 107 to the rightmost position, straightens the hair to be sampled on the limiting structure, and then covers the cover 102. The two cutting elements 107 cut the hair during the movement. The operator removes the excess hair (hair exposed outside the collection device). Due to the presence of the partition plate 78, the cut hair cannot directly fall into the cavity 108, but is supported on the limiting structure. At this time, the operator places the collection device in a horizontal state, opens the cover 102, moves the slider 85 to the area formed by the four limiting protrusions 74, and covers the cover 102 again. The cutting elements 107 on the slider 85 cut the hair cut once again. At this time, the hair cut once is divided into two sections, one of which falls into the first fixed part 76, and the other falls into the second fixed part 75. The hair sample is completed, and the lengths of the two hair samples are 12 cm and 16 cm, respectively.

[0115] The fourth use method is introduced, mainly for the detection personnel with short hair, and the sample hair is as short as possible (the hair length is less than the maximum distance between the two cutting elements 107, and greater than the distance between the two cutting elements 107 when the slider 85 is in the area formed by the four limiting protrusions 74, that is, the hair length is greater than 12 cm and less than 28 cm.): the user moves the slider 85 to the area formed by the four limiting protrusions 74, and the side wall 109 on the side of the cavity 108 with the cutting element 107 is close to the scalp, the hair is straightened and moved into the limiting structure, and then the cover is pressed to close the cover 102, the two cutting elements 107 cut the specified length of hair at the root part and fall into the third cavity 76, and the cutting element 107 on the slider 85 cuts the excess hair and falls into the fourth cavity 75.

[0116] The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto, any change or replacement without creative labor should be covered in the protection scope of the application, therefore, the protection scope of the application should be limited by the protection scope defined in the claims.

[0117] The application shown and described herein can be practiced without any of the elements, limitations, or restrictions specifically disclosed herein. The use of terms and expressions such as "including", "containing", "comprising", "having" and the like are used herein to convey the inclusion of the stated features, elements and / or components but does not imply that any or all of the features, elements and / or components are in any way required for the practice of the application. The terminology and phraseology employed herein are for descriptive purposes and should not be regarded as limiting. It is recognized that various modifications are possible in the spirit of the application. Accordingly, the application is not limited to that precisely as shown and described.

[0118] The contents of the articles, patents, patent applications, and all other documents and electronically available information described or cited herein are hereby incorporated by reference in their entirety to the same extent as if each individual publication, application or document was specifically and individually indicated to be incorporated by reference. Applicant reserves the right to claim any and all benefits that may be available from any such articles, patents, patent applications, or other documents and electronically available information.

Claims

1. A device for collecting hair, characterized in that The device comprises: a cutting element for cutting hair, a limiting structure for hair quantification, a fixed part, the limiting structure is a hole, the hole is arranged on the fixed part, the fixed part is provided with a movable plug plate, the size of the hole can be adjusted by moving the plug plate up and down, so as to adjust the amount of hair cutting, the cutting element can move relative to the limiting structure, the hair is located in the limiting structure, and the cutting element can cut the hair on the limiting structure; The device further comprises a cavity for storing hair, the hair falls into the cavity after being cut by the cutting element, and the cavity is located on the fixed part; The hole is provided with two holes, and the two holes are respectively located on both sides of the cavity; The device further comprises a moving part, and the cutting element is located on the moving part, and the moving part can cover the cavity.

2. A device for collecting hair according to claim 1, wherein The device comprises two cutting elements.

3. A device for collecting hair according to claim 1, wherein The cavity is rotationally connected with the moving part.

4. A device for collecting hair according to claim 1, wherein The fixed part comprises a first fixed part and a second fixed part, and the first fixed part and the second fixed part are detachably connected.

5. A device for collecting hair according to claim 4, wherein The bottom of the second fixed part is provided with two symmetrical arc surfaces.

6. A device for collecting hair according to claim 3, wherein A spring element is arranged between the moving part and the cavity.

7. A device for collecting hair according to claim 3, wherein The moving part and the cavity are provided with a locking structure, the locking structure comprises a first buckle and a second buckle, when the moving part and the cavity are covered, the first buckle and the second buckle are buckled; when the first buckle and the second buckle are unlocked, the moving part and the cavity are separated.

8. A device for collecting hair according to claim 1, wherein The device further comprises a baffle, the baffle is located on the moving part, and the baffle is located outside the cutting element.

9. A device for collecting hair according to claim 8, wherein Further comprising a fixed part, a hole is arranged on the fixed part, and a groove matched with the baffle is arranged on the fixed part.

10. A device for collecting hair according to claim 1, wherein A cutting element capable of slidingly adjusting the position is arranged on the moving part.

11. A device for collecting hair according to claim 1, wherein A fixing groove is arranged on the moving part, and the cutting element is fixed in the fixing groove.

12. A device for collecting hair according to claim 1, wherein A sliding groove is arranged on the moving part, a sliding block is arranged in the sliding groove, and the sliding block is connected with a cutting element.

13. A device for collecting hair according to claim 1, wherein A partition plate is arranged in the cavity, the partition plate is provided with a hole, and a clearance groove is arranged in the partition plate.

14. A device for collecting hair according to claim 13, wherein The partition plate is fixed in the cavity or can slide in the cavity.

15. A device for collecting hair according to claim 12, wherein A limiting protrusion is arranged in the sliding groove, the limiting protrusion can position the sliding block, a partition plate is arranged in the cavity, a clearance groove is arranged in the partition plate, and when the sliding block is positioned by the limiting protrusion, a cutting element connected with the sliding block is aligned with the clearance groove.

16. A device for collecting hair according to claim 15, wherein A sliding groove part is arranged on the sliding block, the sliding groove part is matched with the shape of the sliding groove, a mounting groove is arranged on the sliding groove part, the sliding groove part of the sliding block is detachably connected with an adapter, a first mounting part is arranged on the adapter, the first mounting part can be inserted into the mounting groove, the sliding groove is clamped between the sliding groove part of the sliding block and the adapter, a second mounting part is further arranged on the adapter, the second mounting part is used for connecting the cutting element, the second mounting part is in U shape, and the U-shaped structure of the second mounting part clamps the cutting element in the middle.

17. A method of collecting hair, characterized by, The method uses the device of claim 1, and the method comprises the following steps: placing the hair in the limiting structure for hair quantification, and cutting the hair by the cutting element.

18. A method of collecting hair according to claim 17, wherein, The method further comprises the following steps: taking out the hair for subsequent processing, and the subsequent processing comprises extracting an analyte in the hair by using a chemical reagent.

19. A method of collecting hair according to claim 18, wherein, The analyte comprises a drug abuse small molecule substance.

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