CN112945633B

CN112945633B - Body fluid detection device

Info

Publication number: CN112945633B
Application number: CN202110282692.3A
Authority: CN
Inventors: 郑远生
Original assignee: Guangzhou Wondfo Biotech Co Ltd
Current assignee: Guangzhou Wondfo Biotech Co Ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2023-02-28
Anticipated expiration: 2041-03-16
Also published as: CN112945633A

Abstract

The invention discloses a body fluid detection device which comprises a shell, a sampling assembly and a detection assembly, wherein the sampling assembly comprises a sampling rod and a sponge head, the sponge head is arranged at the bottom end of the sampling rod and is used for absorbing samples, after the sampling rod inserts the sampled sponge head into the shell, the sampling assembly is tightly matched with the shell and is used for extruding the samples in the sponge head, the samples can be conveniently extruded, and more samples can be obtained. According to the invention, the sample in the sponge head is extruded out through the close fit between the sampling assembly and the shell, so that the sample is extruded in the process of inserting the sampling assembly into the shell, and a separate extrusion operation is not required.

Description

Body fluid detection device

Technical Field

The invention relates to the technical field of detection devices, in particular to a body fluid detection device.

Background

At present, the saliva detection cup on the market mainly has the functions as follows: the method is used for detecting the contents of various items such as various drugs, proteins, antigens and the like in human saliva in vitro, and providing real and accurate data basis for the detection of clinical diseases and drugs. Currently, after sample collection, when sampling is required, a separate operation, or equipment, is required to achieve sample expression. The operation is inconvenient and the amount of extrusion is very small.

Therefore, there is a need for a body fluid testing device that facilitates the expression of a sufficient amount of sample.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a body fluid detection device which is convenient for squeezing out enough samples.

The technical scheme of the invention provides a body fluid detection device which comprises a shell, a sampling assembly and a detection assembly, wherein the sampling assembly comprises a sampling rod and a sponge head, the sponge head is arranged at the bottom end of the sampling rod and is used for absorbing a sample, after the sampling rod inserts the sampled sponge head into the shell, the sampling assembly is tightly matched with the shell and is used for extruding the sample in the sponge head.

The sample collection device further comprises a sample collection groove assembly, wherein the sample collection groove assembly comprises a sample collection groove, the sample collection groove is arranged in the shell, and the sample collection groove is communicated with at least one of the sampling assembly and the detection assembly after the sampling assembly and the detection assembly are installed in the shell.

Furthermore, be equipped with sample slot and detection slot in the casing, leave the appearance groove and set up sample slot with detect between the slot, the sampling subassembly inserts in the sample slot, the detection subassembly inserts in detecting the slot.

Furthermore, a first flow channel and a second flow channel are arranged in the shell, the first flow channel is communicated with the sampling slot and the sample reserving slot, and the second flow channel is communicated with the sample reserving slot and the detection slot.

Further, the sampling slot, the sample reserving slot and the detecting slot are sequentially arranged in an inclined downward mode.

Further, the sample retention groove is arranged in the bottom of the shell, and the sampling assembly is inserted into the sample retention groove.

Further, the sample reserving groove component also comprises a sample reserving and holding unit which is inserted into the sample reserving groove and used for holding part of samples.

Further, it keeps a kind save unit including keeping a kind straw and keeping a kind straw lid to keep a kind, it includes straw body and rubber bag to keep a kind straw, the lower extreme of straw body inserts in keeping a kind groove, the rubber bag inserts keep a kind straw lid in and being kept, keep a kind straw lid be used for with the casing) is connected.

Further, stay a kind save unit including staying kind stick and sealing washer, the lower extreme that stays kind stick inserts stay in the kind groove, the sealing washer cover is established stay the outside of kind stick and be used for sealing stay kind stick.

Further, be equipped with sample mounting groove in the casing, the sampling stick inserts back in the sample mounting groove, the sponge head compresses tightly to the bottom of sample mounting groove and extrudes the sample.

Further, the sampling subassembly still includes the sampling rod lid, the sampling rod lid with the top of sampling rod is connected, be equipped with one-way tooth portion on the casing, the sampling rod inserts back in the sample mounting groove, the sampling rod lid with the cooperation of one-way tooth portion makes the sponge head is compressed.

Further, the inner wall of sample mounting groove is equipped with the buckle, the sampling subassembly still includes the sampling stick end, the sampling stick end with the top of sampling stick is connected, the sampling stick inserts back in the sample mounting groove, the sampling stick end with the buckle joint makes the sponge head is compressed.

Further, the cross-sectional area of the sampling installation groove is gradually reduced, and the sponge head is gradually compressed after being inserted into the sampling installation groove.

After adopting above-mentioned technical scheme, have following beneficial effect:

according to the invention, the sample in the sponge head is extruded out through the close fit between the sampling assembly and the shell, so that the sample is extruded in the process of inserting the sampling assembly into the shell, and the sample can be conveniently extruded out without separate extrusion operation, and more samples can be obtained.

Drawings

The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:

FIG. 1 is a schematic view of a sample well assembly installed in a housing according to one embodiment of the present invention;

FIG. 2 is a schematic view of a sample retention pipette of the sample retention well assembly according to one embodiment of the present invention;

FIG. 3 is a schematic view of a sample retention pipette cap of the sample retention well assembly according to one embodiment of the present invention;

FIG. 4 is a schematic view of a liquid detection apparatus according to an embodiment of the present invention;

FIG. 5 is a longitudinal sectional view of a body fluid testing device according to one embodiment of the present invention;

FIG. 6 is a cross-sectional view of a fluid detection device according to an embodiment of the present invention;

FIG. 7 is an exploded view of a fluid detection device according to one embodiment of the present invention;

FIG. 8 is a perspective view of the lower case of the liquid detection apparatus according to the first embodiment of the present invention;

FIG. 9 is a schematic view of the sample retention bar assembly of the second embodiment of the present invention installed in a housing;

FIG. 10 is an exploded view of a sample retention bar and a seal ring of the sample retention groove bar assembly according to the second embodiment of the present invention;

FIG. 11 is a schematic view of a liquid detecting apparatus according to a second embodiment of the present invention;

FIG. 12 is a longitudinal sectional view of a liquid detecting apparatus according to a second embodiment of the present invention;

FIG. 13 is a cross sectional view of a liquid detection apparatus according to a second embodiment of the present invention;

FIG. 14 is a longitudinal sectional view of a sampling unit of a liquid detection apparatus according to a second embodiment of the present invention;

FIG. 15 is an exploded view of a liquid detection apparatus according to a second embodiment of the present invention;

FIG. 16 is a schematic view of a liquid detecting apparatus according to a third embodiment of the present invention;

FIG. 17 is a longitudinal sectional view of a liquid detecting apparatus according to a third embodiment of the present invention;

FIG. 18 is a transverse sectional view of a liquid detecting apparatus according to a third embodiment of the present invention;

FIG. 19 is an exploded view of a liquid detecting apparatus according to a third embodiment of the present invention;

FIG. 20 is a longitudinal sectional view of a sampling assembly of a liquid detection device according to a third embodiment of the present invention;

FIG. 21 is a perspective view of the lower case of the liquid detection apparatus in the third embodiment of the present invention.

Reference symbol comparison table:

the sample reserving groove component 10 comprises a sample reserving groove 11, a sample reserving pipette 12, a sample reserving pipette cover 13, a pipette body 121, a rubber bag 122, an elastic pressing sheet 131, a notch 132, a fixed end 131a, a pressing end 131b, a sample reserving rod 14, a sealing ring 15, an annular notch 141, a first sealing ring 151, a second sealing ring 152 and a sample reserving groove sealing ring 16;

a housing 20: a sampling slot 21, a detection slot 22, a first flow passage 23, a second flow passage 24, an upper shell 25, a lower shell 26, a sealing ring 27, a sample retention rod slot 28, a guide plate 29, a sampling mounting groove 251, a buckle 251a, a squeezing surface 251b, a sample outflow hole 251c, an external thread part 251d, a one-way tooth part 252, a top plate 253, a sample retention mounting groove 254, a buckle 254-1, a first slot edge 221 and a second slot edge 222;

the sampling assembly 30: the sponge head 31, the sampling rod 32, the sampling rod cover 33, the sampling amount test paper 34, the sampling rod end 35 and the one-way gear ring 331;

the detection assembly 40: test paper 41 and an inserting plate 42.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings.

It is easily understood that according to the technical solution of the present invention, those skilled in the art can substitute various structures and implementation manners without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as limiting or restricting the technical aspects of the present invention.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

In some embodiments of the present invention, as shown in fig. 4-5, the body fluid testing device comprises a housing 20, a sampling assembly 30 and a testing assembly 40, wherein the sampling assembly 30 comprises a sampling rod 32 and a sponge head 31, the sponge head 31 is arranged at the bottom end of the sampling rod 32, the sponge head 31 is used for absorbing a sample, after the sampling rod 32 inserts the sampled sponge head 31 into the housing 20, the sampling assembly 30 is tightly matched with the housing 20 for extruding the sample in the sponge head 31.

Wherein, the housing 20 is used for installing the sampling assembly 30 and the detection assembly 40; the sampling assembly 30 is used for collecting a sample and bringing the sample into the interior of the housing 20; the detection component 40 is used for performing primary detection on the sample to obtain a result after the primary detection.

Closely cooperate between sample subassembly 30 and the casing 20 can be the interact between sponge head 31 and the casing 20 to make and keep the relatively fixed state between sample subassembly 30 and the casing 20, sponge head 31 is extruded by the extrusion deformation, extrudes the sample in the sponge head 31.

The sponge head 31 may be squeezed in the vertical direction, the horizontal direction, both the vertical direction and the horizontal direction of the housing 20, or the sponge head 31 may be screwed down, or compressed from the outside toward the center.

The sample in the sponge head 31 is extruded through the tight fit between the sampling assembly 30 and the shell 20, so that the sample is extruded in the process that the sampling assembly 30 is inserted into the shell 20, the independent extrusion operation is not needed, the sample can be extruded conveniently, and more samples can be obtained.

In some embodiments of the present invention, as shown in fig. 5, a sampling installation groove 251 is formed in the housing 20, and after the sampling rod 32 is inserted into the sampling installation groove 251, the sponge head 31 is pressed against the bottom of the sampling installation groove 251 and the sample is extruded.

After the sampling stick 32 is inserted into the sampling mounting groove 251, the sponge head 31 is pushed down so that the sponge head 31 is in contact with the bottom surface of the sampling mounting groove 251 and is pressed.

In some embodiments of the present invention, as shown in fig. 5 and 7, the sampling assembly 30 further includes a sampling rod cover 33, the sampling rod cover 33 is connected to the top end of the sampling rod 32, the housing 20 is provided with a one-way tooth portion 252, and after the sampling rod 32 is inserted into the sampling installation groove 251, the sampling rod cover 33 is engaged with the one-way tooth portion 252, so that the sponge head 31 is compressed.

Specifically, the sampling rod cover 33 is in threaded connection with the external thread portion 251d at the top of the sampling mounting groove 251, the edge of the sampling rod cover 33 is provided with a one-way gear ring 331 corresponding to the one-way tooth portion 252, and in the process of screwing the sampling rod cover 33 and the sampling mounting groove 251, the one-way tooth portion 252 is matched with the one-way gear ring 331, so that the sampling rod cover 33 can only rotate in one way towards the screwing direction and cannot rotate in the opposite direction, and the sampling rod cover 33 is prevented from loosening. In the process of screwing the sampling rod cover 33 and the sampling mounting groove 251, the sampling rod 32 and the sponge head 31 are pushed downwards, so that the sponge head 31 is tightly pressed against the bottom surface of the sampling mounting groove 251, and a sample in the sponge head 31 is extruded.

In some embodiments of the present invention, as shown in fig. 14, a buckle 251a is disposed on an inner wall of the sampling installation groove 251, the sampling assembly 30 further includes a sampling rod tip 35, the sampling rod tip 35 is connected to a top end of the sampling rod 32, and after the sampling rod 32 is inserted into the sampling installation groove 251, the sampling rod tip 35 is buckled with the buckle 251a, so that the sponge head 31 is compressed.

In some embodiments of the present invention, as shown in fig. 19 to 20, the cross-sectional area of the sampling fitting groove 251 is gradually reduced, and the sponge head 31 is gradually compressed after being inserted into the sampling fitting groove 251.

Specifically, the upper half section of the sampling mounting groove 251 is cylindrical, the lower half section forms two extrusion surfaces 251b which are inclined inwards relatively, a small cavity is formed between the extrusion surfaces 251b, the cross sectional area of the expanded sponge head 31 is larger than that of the extrusion surfaces 251b, and when the sponge head 31 passes through the extrusion surfaces 251b, the sponge head is compressed and deformed to extrude a sample.

Alternatively, the sampling fitting groove 251 may be formed as a conical tube having a gradually reduced inner diameter to gradually compress the sponge head 31. Or other shaped cavity with large top and small bottom.

In some embodiments of the present invention, as shown in fig. 1, the sample well assembly 10 further comprises a sample well assembly 10, the sample well assembly 10 comprises a sample well 11, the sample well 11 is disposed in the housing 20, the sample well 11 is in communication with at least one of the sampling assembly 30 and the testing assembly 40 when the sampling assembly 30 and the testing assembly 40 are mounted in the housing 20, and the sample well assembly 10 is configured to hold a portion of the sample for subsequent review.

Alternatively, the sample retention groove 11 may be separately installed in the housing 20, or may be integrally formed with the housing 20.

Alternatively, the sample retention groove 11 can be directly connected with the sampling assembly 30, and the sample in the sampling assembly 30 directly flows into the sample retention groove 11 to be collected.

Alternatively, the sample retention groove 11 can also be directly connected with the detection component 40, and the excessive sample in the detection component 40 flows into the sample retention groove 11 to be collected.

Optionally, the sample reserving groove 11 may also be connected to the sampling assembly 30 and the detecting assembly 40 at the same time, the sample reserving groove 11 may be connected between the sampling assembly 30 and the detecting assembly 40, the sample is squeezed into the sample reserving groove 11 from the sampling assembly 30, and after the sample reserving groove 11 is full, the sample flows into the detecting assembly 40 again.

Alternatively, the sample in the sampling assembly 30 may first flow into the detecting assembly 40 for preliminary detection, and then the excess sample flows into the sample reserving groove 11 for preservation.

In some embodiments of the present invention, as shown in fig. 5-6, the housing 20 has a sampling slot 21 and a detecting slot 22, the sample reserving slot 11 is disposed between the sampling slot 21 and the detecting slot 22, the sampling assembly 30 is inserted into the sampling slot 21, and the detecting assembly 40 is inserted into the detecting slot 22.

Wherein, reserve appearance groove 11 and sample slot 21 and detection slot 22 intercommunication, during sampling assembly 30 inserts sample slot 21, the sample flows into sample slot 21 at first, then flows into from sample slot 21 and reserves appearance groove 11 again, when reserving appearance groove 11 overflow the back, again from reserving appearance groove 11 flow into detection slot 22 in, detection assembly 40 absorbs the sample that detects in the slot 22 and carries out the primary detection.

Optionally, the sampling slot 21 may also be connected to the sample reserving slot 11 and the detecting slot 22 at the same time, and the sample flows into the sample reserving slot 11 and the detecting slot 22 from the sampling slot 21 at the same time, so as to implement operations of synchronously storing the sample and performing the primary detection.

Alternatively, the sampling slot 21 can be directly connected to the detecting slot 22, and the detecting slot 22 is connected to the sample reserving slot 11. The sample flows from the sampling slot 21 into the detection slot 22, and the excess sample flows from the detection slot 22 into the sample retention slot 11.

In some embodiments of the present invention, as shown in fig. 6, a first flow channel 23 and a second flow channel 24 are disposed in the housing 20, the first flow channel 23 communicates the sampling slot 21 and the sample retention slot 11, and the second flow channel 24 communicates the sample retention slot 11 and the detection slot 22.

The first flow path 23 guides the sample from the sampling slot 21 to the sample reserving groove 11, and the second flow path 24 guides the sample from the sample reserving groove 11 to the detecting slot 22.

The shape of the first flow passage 23 and the second flow passage 24 may extend in a horizontal direction, or extend in a vertical direction, or be sloped, or be curved.

In some embodiments of the present invention, as shown in fig. 12, the sampling slot 21, the sample retention slot 11, and the detection slot 22 are arranged in sequence obliquely downward.

The sample flows from the sampling slot 21 to the sample reserving slot 11 by the gravity of the sample, and flows from the sample reserving slot 11 to the detecting slot 22 after the sample reserving slot 11 is full.

In some embodiments of the present invention, as shown in fig. 17, sample retention slot 11 is disposed within the bottom of housing 20, and sampling assembly 30 is inserted directly into sample retention slot 11.

After the sampling assembly 30 is inserted into the housing 20, the sample directly flows into the sample retention groove 11, and the overflowed sample further flows from the sample retention groove 11 to the detection assembly 40 or to the detection slot 22.

In some embodiments of the present invention, the sample retention slot assembly 10 further comprises a sample retention holding unit inserted into the sample retention slot 11 for retaining a portion of the sample.

The sample reserving groove 11 is used for accommodating a part of the sample, but the sample is easy to overflow in the sample reserving groove 11, the sample can be sucked and held from the sample reserving groove 11 through the sample reserving and holding unit, the sample is prevented from leaking, and the sample taking during the subsequent reinspection is also convenient.

In some embodiments of the present invention, as shown in fig. 1-2, the sample retention and storage unit includes a sample retention pipette 12 and a sample retention pipette cap 13, the sample retention pipette 12 includes a pipette body 121 and a rubber bag 122, the lower end of the pipette body 121 is inserted into the sample retention groove 11, the rubber bag 122 is inserted into and held by the sample retention pipette cap 13, and the sample retention pipette cap 13 is used to connect with the housing 20.

When the sample reserving groove 11 is filled with the sample, the rubber bag 122 is released by pressing, the rubber bag 122 generates negative pressure, and the pipette body 121 sucks and stores the sample in the sample reserving groove 11.

In some embodiments of the present invention, as shown in fig. 9 to 10, the retention sample storage unit includes a retention sample rod 14 and a sealing ring 15, the lower end of the retention sample rod 14 is inserted into the retention sample groove 11, and the sealing ring 15 is sleeved on the outer surface of the retention sample rod 14 for sealing the retention sample rod 14.

The sample retention rod 14 can be a sponge rod, the sample retention rod 14 absorbs the sample in the sample retention groove 11 and stores the sample therein, and the sealing ring 15 is used for sealing the sample retention rod 14 and preventing the sample from leaking.

Optionally, the sample retention and storage unit may be made of other materials or structures that can facilitate the storage of the sample and prevent leakage. For example: the sample flows into the sealed cavity from the sample reserving groove 11 and is stored, and the sample in the sealed cavity cannot flow back into the sample reserving groove 11.

The first embodiment is as follows:

referring to fig. 1-8, schematic diagrams of a liquid detection apparatus according to a first embodiment of the present invention are shown.

As shown in fig. 1 to 3, the body fluid testing device comprises a sample retention groove assembly 10, the sample retention groove assembly 10 comprises a sample retention groove 11, a sample retention pipette 12 and a sample retention pipette cover 13, the sample retention pipette 12 comprises a pipette body 121 and a rubber bag 122, the lower end of the pipette body 121 is inserted into the sample retention groove 11, the rubber bag 122 is inserted into the sample retention pipette cover 13 and is held, and the sample retention pipette cover 13 is used for being connected with the body fluid testing device.

Specifically, the sample retention groove 11 is disposed in the housing 20 of the body fluid testing device, and the sample retention groove 11 may be integrally formed with the housing 20, and the sample retention groove 11 is used for accommodating a sampled sample.

The sample retention pipette 12 comprises a pipette body 121 and a rubber bag 122, the pipette body 121 is inserted into the housing 20 of the body fluid testing device, the lower end of the pipette body 121 is inserted into the sample retention groove 11, and the pipette body 121 has a sufficient length to be inserted into the sample retention groove 11 and also to be used for storing a part of a sample.

The straw body 121 may be made of transparent glass or other transparent hard materials.

The rubber bag 122 is connected to the upper end of the suction pipe body 121, and the rubber bag 122 is filled with air. When the rubber bladder 122 is pressed, air in the rubber bladder 122 is discharged from the lower end of the suction pipe body 121. When the rubber bag 122 is released, negative pressure is generated in the rubber bag 122, and the sample in the sample reserving groove 11 is sucked into the straw body 121 for storing part of the sample for subsequent reinspection.

In the retest, the sample retaining pipette 12 is taken out of the body fluid testing apparatus, and then the rubber bag 122 is pressed again to extrude the sample from the pipette body 121.

The pipette cap 13 is detachably attached to the body fluid testing device case 20. The cuvette lid 13 holds the cuvette 12 in the housing 20, and the cuvette lid 13 is made of a hard material to protect the rubber bladder 122 from being squeezed. When the sample retention pipette 12 needs to be taken out, the sample retention pipette cap 13 is detached, and the sample retention pipette 12 is taken out.

Specifically, as shown in fig. 5, the sample retention pipette cap 13 is engaged with the upper case 25 by a snap.

As shown in fig. 7, a sample reserving installation groove 254 is formed in the upper case 25, the sample reserving installation groove 254 is circular, two buckles 254-1 are arranged on the outer wall of the sample reserving installation groove 254, a clamping hole (not shown) is formed in the sample reserving straw cover 13, the buckle 254-1 is inserted into the clamping hole, and the sample reserving straw cover 13 is connected with the sample reserving installation groove 254.

Alternatively, the sample retention pipette cap 13 and the upper shell 25 may be connected by a screw thread.

Further, as shown in fig. 1 and 8, the sample retention groove 11 is a cylindrical groove structure. The pipette body 121 is also a thin circular tube, which facilitates insertion into the sample retention groove 11.

Alternatively, the sample retention groove 11 may be a groove structure with other shapes as long as it can accommodate a certain amount of sample and facilitate the insertion of the pipette body 121.

Further, as shown in FIG. 1, the lower end of the pipette body 121 is in contact with the bottom surface of the sample retention groove 11. The bottom surface of the sample reserving groove 11 can be an arc surface, and the pipette body 121 is in contact with the lowest point of the sample reserving groove 11, so that more samples in the sample reserving groove 11 can be sucked.

Optionally, the bottom surface of the sample retention groove 11 may also be a slope surface, and the suction nozzle of the suction pipe body 121 contacts with the lowest part of the slope surface.

Further, as shown in fig. 1 and 3, the sample retention pipette cap 13 is provided with an elastic pressing piece 131, when the elastic pressing piece 131 is pressed inward, the elastic pressing piece 131 presses the rubber bag 122, and the pipette body 121 sucks and retains the sample in the sample retention groove 11 in the pipette body 121.

The elastic pressing piece 131 is arranged on the side wall of the sample retention pipette cap 13, and when the elastic pressing piece 131 is pressed by a finger, the elastic pressing piece 131 deforms towards the interior of the sample retention pipette cap 13 and is used for pressing the rubber bag 122; when the elastic pressing piece 131 is released, the elastic pressing piece 131 returns to the initial position, and the rubber bag 122 also returns to deform, so that the sample in the sample retention groove 11 is sucked into the pipette body 121.

In this embodiment, two elastic pressing pieces 131 are provided, and are oppositely disposed on opposite sides of the pipette cap 13. When the elastic pressing piece 131 is pressed inward by two fingers at the same time, the rubber bladder 122 can be pressurized to the maximum extent.

Alternatively, only one elastic pressing piece 131 may be provided on the side wall of the cuvette lid 13 to press one side of the rubber bag 122.

Alternatively, an elastic pressing piece 131 may be provided on the top of the cuvette lid 13 to press the rubber bag 122 from the top to the bottom, and the bottom of the rubber bag 122 is restricted by the housing 20 and the bottom of the rubber bag 122 is not moved when pressed.

Further, as shown in fig. 3, the elastic pressing piece 131 includes a fixed end 131a and a pressing end 131b, a notch 132 is opened on the sample retention pipette cap 13, the elastic pressing piece 131 is disposed in the notch 132, the fixed end 131a is fixedly connected with the notch 132, and a gap is left between the pressing end 131b and the notch 132.

Specifically, the elastic pressing piece 131 has a cantilever structure, and a fixed end 131a thereof is connected to the cuvette lid 13, and a pressing end 131b thereof can be pressed and deformed.

Optionally, a plurality of ribs are further disposed on the outer side surface of the elastic pressing sheet 131 to increase friction force with fingers, so as to facilitate operation.

Alternatively, the elastic pressing piece 131 may not be provided, and the sample retention pipette cap 13 may be connected to the housing 20 after the sample retention pipette 12 sucks the sample.

In this embodiment, before use, the sample retention pipette 12 is inserted into the casing 20 of the body fluid detection device, so that the lower end of the pipette body 121 is inserted into the sample retention groove 11; the cuvette lid 13 is then snapped or screwed into the housing 20.

In use, after the sample flows into the sample retention groove 11, the elastic pressing piece 131 is pressed to suck the sample into the pipette body 121.

When the retest is needed, the sample-reserving pipette cap 13 is firstly detached, then the sample-reserving pipette 12 is taken out, and finally the rubber bag 122 is squeezed to extrude the sample for retest.

In this embodiment, the sample retaining slot assembly 10 facilitates the storage and taking of the sample, and facilitates the subsequent retest of the sample.

As shown in fig. 4-8, the body fluid testing device further comprises a housing 20, a sampling assembly 30, and a testing assembly 40, wherein the sample reserving groove assembly 10 is installed in the housing 20, and when the sampling assembly 30 and the testing assembly 40 are inserted into the housing 20, the sample reserving groove 11 is communicated with the sampling assembly 30 and the testing assembly 40.

Specifically, the sampling assembly 30 is used to collect a sample, and the sampling assembly 30 is inserted into the housing 20 to discharge the collected sample into the housing 20.

The sample flows into the sample retention groove 11 from the housing 20, and when the sample retention groove 11 is full, the sample flows into the detection assembly 40, and the sample is detected in the detection assembly 40.

By the sample groove assembly 10, a part of the sample is stored while the sample is detected, so that subsequent reinspection is facilitated.

Further, as shown in fig. 6 and 8, a sampling slot 21 and a detection slot 22 are provided in the housing 20, and the sample retention slot 11 is provided between the sampling slot 21 and the detection slot 22.

Specifically, as shown in fig. 5, after the sampling assembly 30 is inserted into the housing 20, the bottom of the sampling assembly 30 is inserted into the sampling slot 21, and the sample collected by the sampling assembly 30 flows into the sampling slot 21.

As shown in fig. 6-7, a plurality of test strips 41 are included in the test assembly 40, and the test assembly 40 is inserted into the test slot 22.

Since the sample reserving groove 11 communicates with the sampling groove 21 and the detecting groove 22, the sample flows into the sample reserving groove 11 from the sampling groove 21 and then flows into the detecting groove 22 from the sample reserving groove 11. The test strip in the test assembly 40 performs the primary test on the sample.

Alternatively, the sample in the sampling slot 21 may flow into the detection slot 22 first, and the excess sample in the detection slot 22 may flow into the sample retention slot 11 for storage.

In this embodiment, the sampling slot 21 is a circular groove; the test socket 22 is a flat recess that matches the shape of the flat test element 40.

Alternatively, when the test assembly 40 is cylindrical, the test socket 22 is also a circular recess.

Further, as shown in fig. 6 and 8, a first flow channel 23 and a second flow channel 24 are provided in the housing 20, the first flow channel 23 communicates the sampling slot 21 and the sample reserving slot 11, and the second flow channel 24 communicates the sample reserving slot 11 and the detecting slot 22.

Specifically, the first flow channel 23 is a straight groove, the second flow channel 24 is a bent groove, and the second flow channel 24 is connected to the middle of the detection slot 22, so that the sample can flow towards two sides of the detection slot 22 quickly.

Further, as shown in fig. 5, one end of the first flow path 23 is connected to the bottom of the sampling slot 21, and the other end is connected to the upper portion of the sample reserving slot 11.

Since the sampling slot 21 does not need to store a sample, the bottom of the sampling slot 21 is connected to the first flow path 23, and the entire sample is introduced into the sample retention slot 11.

Since a part of the sample needs to be collected in the sample retention groove 11, the first flow path 23 is connected to the upper portion of the sample retention groove 11, and the sample flows down from the upper portion of the sample retention groove 11 and is collected in the sample retention groove 11.

Further, as shown in fig. 8, one end of the second flow path 24 is connected to the upper portion of the sample retention groove 11, and the other end is connected to the upper portion of the detection slot 22.

Because one end of the second flow channel 24 is connected to the upper part of the sample reserving groove 11, when the sample in the sample reserving groove 11 overflows, the sample flows into the detection slot 22 from the second flow channel 24, and then the sample flows into the detection slot 22 to be collected, so that the sample can be conveniently absorbed by the detection test paper.

Further, as shown in fig. 5, the sampling assembly 30 comprises a sampling rod 32 and a sponge head 31, the sponge head 31 is disposed at the bottom end of the sampling rod 32, the sponge head 31 is used for absorbing the sample, and after the sampling rod 32 inserts the sampled sponge head 31 into the housing 20, the sampling assembly 30 and the housing 20 are tightly fitted to extrude the sample in the sponge head 31.

Further, as shown in fig. 5, a sampling mounting groove 251 is formed in the housing 20, and after the sampling rod 32 is inserted into the sampling mounting groove 251, the sponge head 31 is pressed against the bottom of the sampling mounting groove 251 and the sample is extruded. After the sampling stick 32 is inserted into the sampling mounting groove 251, the sponge head 31 is pushed down so that the sponge head 31 is in contact with the bottom surface of the sampling mounting groove 251 and is pressed.

Further, as shown in fig. 5 and 7, the sampling assembly 30 further includes a sampling rod cover 33, the sampling rod cover 33 is connected to the top end of the sampling rod 32, the housing 20 is provided with a one-way tooth portion 252, and after the sampling rod 32 is inserted into the sampling mounting groove 251, the sampling rod cover 33 is engaged with the one-way tooth portion 252, so that the sponge head 31 is compressed.

Specifically, the sampling rod cover 33 is in threaded connection with an external thread portion 251d at the top of the sampling mounting groove 251, a one-way gear ring 331 corresponding to the one-way tooth portion 252 is arranged at the edge of the sampling rod cover 33, and in the process of screwing the sampling rod cover 33 and the sampling mounting groove 251, the one-way tooth portion 252 is matched with the one-way gear ring 331, so that the sampling rod cover 33 can only rotate in one way towards the screwing direction and cannot rotate in the reverse direction, and the sampling rod cover 33 is prevented from loosening. In the process of screwing the sampling rod cover 33 and the sampling mounting groove 251, the sampling rod 32 and the sponge head 31 are pushed downwards, so that the sponge head 31 is tightly pressed against the bottom surface of the sampling mounting groove 251, and a sample in the sponge head 31 is extruded.

Further, as shown in fig. 5 and 7, the sampling assembly 30 further includes a collection test strip 34. The sample amount test paper 34 is mounted in the sample stick 32 and is in contact with the sponge head 31. When the sponge head 31 absorbs a sample, the acquisition test paper 34 is used to detect the amount of absorption of the sample, helping to judge whether the sample has absorbed a sufficient amount.

Further, as shown in fig. 7, a sealing ring 27 is provided between the upper case 25 and the lower case 26, and the sealing ring 27 is used to seal a gap between the upper case 25 and the lower case 26.

The use process of the liquid detection device in the first embodiment is as follows:

the sample is collected using the sponge head 31 of the sampling assembly 30 and the collection test strip 34 is used to indicate the amount of sample collected. When the sample is sufficiently collected, the sampling assembly 30 is inserted into the sampling mount groove 251, and then the sampling rod cap 33 is tightened. At this time, the sponge head 31 is squeezed, the sponge head 31 is inserted into the sampling slot 21, the sample flows into the sampling slot 21, then flows into the sample reserving groove 11 along the first flow passage 23, and after the sample in the sample reserving groove 11 overflows, the sample flows into the detection slot 22 along the second flow passage 24, and the detection test paper 41 of the detection assembly 40 absorbs the sample, performs the primary detection, and displays the detection result.

A part of the sample is retained in the sample retention groove 11, then the elastic pressing sheet 131 is pressed, the elastic pressing sheet 131 compresses the rubber bag 122, negative pressure is formed after the elastic pressing sheet 131 is released, and the sample in the sample retention groove 11 is sucked and stored in the pipette body 121 by the pipette body 121.

In this embodiment, when the sample is detected for the first time, a part of the sample is stored by the sample reserving slot assembly 10, which facilitates subsequent retest. Time is saved, operation is simplified, sample preservation is facilitated, and the sample does not need to be separately maintained again.

The sample in this embodiment may be saliva, urine, or blood, or may be used for detection of other body fluids.

Example two:

referring to fig. 9-15, there are shown schematic views of a liquid detection apparatus according to a second embodiment of the present invention.

As shown in fig. 9 to 10, the body fluid testing device includes a sample retention groove assembly 10, the sample retention groove assembly 10 includes a sample retention groove 11, a sample retention rod 14 and a sealing ring 15, a lower end of the sample retention rod 14 is inserted into the sample retention groove 11, and the sealing ring 15 is sleeved on an outer surface of the sample retention rod 14 for sealing the sample retention rod 14.

After the sample retention rod 14 is inserted into the housing 20, the lower end of the sample retention rod 14 is inserted into the sample retention groove 11, and the sample retention rod 14 is used for sucking the sample in the sample retention groove 11, so that a part of the sample can be conveniently kept for subsequent reinspection.

The sealing ring 15 is sleeved outside the sample retention rod 14 and is used for sealing the sample retention rod 14 and preventing the sample in the sample retention rod 14 from overflowing.

Further, as shown in fig. 9 to 10, the sample retention bar 14 is a cylindrical long strip and is inserted into the sample retention groove 11 in the vertical direction.

The sample is continuously drawn from the lower end of the sample retention bar 14 to the upper end of the sample retention bar 14 until the entire sample retention bar 14 is filled. When a retest is required, the applicator 14 is removed from the housing 20 and the applicator 14 is then squeezed to force the sample out.

Preferably, the retention bar 14 is made of a water absorbent material. The applicator 14 may be made of a water-absorbent material such as foam or sponge, and the applicator 14 is in a dry state before being inserted into the housing 20. After the sample retention stick 14 is inserted into the sample retention groove 11, when the sample flows into the sample retention groove 11, the sample retention stick 14 absorbs the sample and retains it therein.

Preferably, the lower end of the sample retention bar 14 is in contact with the bottom surface of the sample retention groove 11.

Alternatively, the lower end of the retention bar 14 may also be kept a small distance from the bottom surface of the retention groove 11.

Further, as shown in fig. 10, the sample retention rod 14 is provided with an annular gap 141, and the sealing ring 15 is sleeved on the annular gap 141.

The annular notch 141 is recessed inward in the circumferential direction of the cylindrical sample retention rod 14, and the seal ring 15 is fitted into the annular notch 141 for tight fitting of the sample retention rod 14.

The seal 15 is capable of both sealing the applicator rod 14 and retaining the applicator rod 14 within the housing 20.

Further, as shown in fig. 10, the seal ring 15 includes a first seal ring 151 and a second seal ring 152, the first seal ring 151 is in the shape of an oblate ring, the second seal ring 152 is in the shape of a hollow cylinder, the first seal ring 151 is fitted over the middle upper portion of the sample retention rod 14, and the second seal ring 152 is fitted over the bottom portion of the sample retention rod 14 and sealed with the sample retention groove 11.

The first seal 151 is used to seal the gap between the retention bar 14 and the inner wall of the housing 20. The second seal ring 152 seals the gap between the sample retention rod 14 and the inner wall of the housing 20, and also seals the gap between the sample retention rod 14 and the sample retention groove 11, and the lower end surface of the second seal ring 152 is in close contact with the upper end surface of the sample retention groove 11.

In this embodiment, the seal ring 15 and the sample retention rod 14 are connected, and then the seal ring 15 and the sample retention rod 14 are inserted into the housing 20 together, so that the lower end of the sample retention rod 14 enters the sample retention groove 11. When the collected sample flows into the sample retention groove 11, the sample retention rod 14 absorbs the sample and stores the sample therein for subsequent reinspection.

As shown in fig. 11 to 15, the body fluid testing device further comprises a housing 20, a sampling module 30 and a testing module 40, wherein the sample reserving groove 10 is installed in the housing 20, and when the sampling module 30 and the testing module 40 are inserted into the housing 20, the sample reserving groove 11 is communicated with the sampling module 30 and the testing module 40.

Further, as shown in fig. 12 to 13, a sampling slot 21 and a detection slot 22 are provided in the housing 20, and the sample retention slot 11 is provided between the sampling slot 21 and the detection slot 22.

Specifically, as shown in fig. 12, after the sampling assembly 30 is inserted into the housing 20, the bottom of the sampling assembly 30 is inserted into the sampling slot 21, and the sample collected by the sampling assembly 30 flows into the sampling slot 21.

As shown in fig. 13, the test member 40 includes a plurality of test strips therein, and the test member 40 is inserted into the test slot 22.

Because the sample reserving groove 11 is communicated with the sampling slot 21 and the detection slot 22, the sample flows into the sample reserving groove 11 from the sampling slot 21 and then flows into the detection slot 22 from the sample reserving groove 11, and the detection test paper in the detection assembly 40 carries out primary detection on the sample.

In this embodiment, as shown in fig. 13, the sampling slot 21 is a circular groove; the test socket 22 is a flat recess that matches the shape of the flat test element 40.

Further, as shown in fig. 12, the sampling slot 21, the sample retention slot 11, and the detection slot 22 are arranged in this order obliquely downward.

Specifically, the bottom surface of the sampling slot 21 is a slope surface, the sample in the sampling slot 21 flows into the sample reserving slot 11, the sample reserving slot 11 sinks downwards by a certain depth, when the sample reserving slot 11 is full, the sample flows into the detection slot 22 in an inclined and downward manner, and the detection assembly 40 absorbs the sample in the detection slot 22.

Further, as shown in fig. 15, the housing 20 includes an upper case 25 and a lower case 26, and the upper case 25 is snap-fitted into the lower case 26.

The upper shell 25 comprises a top plate 253, an opening for installing the sample groove assembly 10 and the sampling assembly 30 is formed in the top plate 253, one side of the top plate 253 is fixedly connected with an inserting plate 42 of the detection assembly 40, and a plurality of detection test paper 41 are inserted into the inserting plate 42.

As shown in fig. 12, the lower shell 26 is provided with a sampling slot 21, a sample reserving slot 11 and a detecting slot 22, after the upper shell 25 is fastened with the lower shell 26, the sample reserving slot assembly 10 is inserted into the sample reserving slot 11, the sampling assembly 30 is inserted into the sampling slot 21, and the detecting assembly 40 is inserted into the detecting slot 22.

As shown in fig. 9 and 15, a retention sample rod insertion groove 28 is further provided in the lower case 26, the retention sample rod insertion groove 28 is disposed directly above the retention sample groove 11, the retention sample rod 14 is inserted into the retention sample rod insertion groove 28, and the seal ring 15 is disposed between the retention sample rod 14 and the retention sample rod insertion groove 28.

The sample retention bar slot 28 is used for retaining the long-strip-shaped sample retention bar 14 in the shell 20, and the sealing ring 15 is used for sealing a gap between the sample retention bar slot 28 and the sample retention bar 14 and preventing a sample from overflowing into the gap; when the retention bar 14 is filled with the sample, the retention bar 14 becomes flexible, and the retention bar slot 28 can function to support the retention bar 14 and prevent the retention bar 14 from bending and deforming in the housing 20.

Further, as shown in fig. 14 to 15, the sampling assembly 30 includes a sampling stick tip 35, a sampling stick 32 and a sponge head 31 in this order from top to bottom, and a sampling amount test paper 34 is mounted in the sampling stick 32 and is in contact with the sponge head 31.

Further, as shown in fig. 14, a buckle 251a is provided on an inner wall of the sampling installation groove 251, and after the sampling rod 32 is inserted into the sampling installation groove 251, the sampling rod tip 35 is in a clamping connection with the buckle 251a, so that the sponge head 31 and the bottom surface of the sampling installation groove 251 are compressed in a vertical direction.

In this embodiment, during the use, collect the sample through sampling component 30 earlier, during sampling component 30 collects the sample and inserts sample mounting groove 251 after, sampling component 30 and sample mounting groove 251 block back, the sponge head 31 is extruded, squeezes the sample into sample slot 21, and the sample flows into from sample slot 21 and stays a kind groove 11 in, stays a kind groove subassembly 10 and absorbs some samples and keeps wherein. When the sample in the sample retention slot 11 is full, the sample flows into the detection slot 22, and the sample is sucked by the detection assembly 40 and is subjected to primary detection through the detection test paper. When a review is required, the applicator 14 is removed from the housing 20 and the stored sample is expressed.

Example three:

referring to fig. 16-21, there are shown schematic views of a body fluid testing assembly according to a third embodiment of the present invention.

As shown in fig. 16 to 17, the body fluid testing device includes a housing 20, a sampling assembly 30, a testing assembly 40, and a sample reserving groove 11, wherein the sample reserving groove 11 is disposed in the bottom of the housing 20, the testing assembly 40 is inserted into the housing 20, after the sampling assembly 30 is inserted into the sample reserving groove 11, a part of the sample in the sampling assembly 30 flows into the testing assembly 40, and a part of the sample flows into the sample reserving groove 11.

Specifically, the sampling assembly 30 is used for collecting a sample, the sampling assembly 30 is inserted into the housing 20 in a vertical direction, the bottom of the sampling assembly 30 is inserted into the sample reserving groove 11, and the collected sample is discharged into the sample reserving groove 11.

After the sampling assembly 30 is inserted into the sample retention groove 11, a part of the sample flows into the detection assembly 40, and the sample is primarily detected in the detection assembly 40.

And part of the sample is preserved by the sample reserving groove 11, so that the sample is detected while part of the sample is preserved, and subsequent reinspection is facilitated.

Further, as shown in fig. 17, a detection slot 22 is provided in the housing 20, and the detection member 40 is inserted into the detection slot 22.

After the sample flows into the testing assembly 40, the testing assembly 40 performs a primary test on the sample. The test slot 22 serves to mount the test assembly 40 and may also be used to store a portion of the sample for absorption by the test assembly 40.

Further, as shown in fig. 17 and 21, a baffle 29 is further included, and the baffle 29 is connected to the upper portion of the sample retention groove 11 and is connected to the detection slot 22 in an inclined downward manner.

Specifically, the guide plate 29 is obliquely arranged at the bottom of the shell 20, the edge of the guide plate 29 is connected with the inside of the shell 20, the guide plate 29 and the sample reserving groove 11 are integrally formed, and the sample reserving groove 11 is recessed downwards relative to the guide plate 29.

After the sampling assembly 30 is inserted into the sample retention groove 11, part of the sample flows into the guide plate 29, the sample flows along the guide plate 29 toward the lower detection slot 22 by virtue of the gravity of the sample, and part of the sample flows into the detection slot 22 and is absorbed by the detection assembly 40 for primary detection.

Preferably, as shown in fig. 17, a baffle 29 is connected to the bottom of the test slot 22.

Optionally, the baffle 29 may also be connected to the lower portion of the test slot 22, and the sample flows into the test slot 22 and accumulates a portion of the sample, so that the test assembly 40 can absorb enough sample to ensure the accuracy of the test.

Preferably, the deflector 29, the sample retention groove 11 and the housing 20 are integrally formed.

Alternatively, the baffle 29 and the sample retention groove 11 may be formed separately from the housing 20, connected to the inner wall of the housing 20 by a snap fit, or interference fit with the inner wall of the housing 20.

Further, as shown in fig. 18, the detecting slot 22 includes a first slot edge 221 and a second slot edge 222, the first slot edge 221 and the second slot edge 222 are respectively disposed on two opposite sides of the housing 20, the detecting assembly 40 is flat, and two sides of the detecting assembly 40 are respectively inserted into the first slot edge 221 and the second slot edge 222.

Specifically, as shown in fig. 17, the check slot 22 is provided on a side wall of the lower case 26 and extends in the longitudinal direction.

As shown in fig. 18 and 21, the sensing slot 22 is provided on two opposite side walls of the lower case 26, with a first slot edge 221 on the left side wall and a second slot edge 222 on the right side wall.

As shown in fig. 19, the detection unit 40 has a flat plate shape, and a plurality of test strips 41 are inserted in the detection unit 40 in parallel.

The sensing member 40 is inserted between the first and second groove sides 221 and 222 and a sidewall of the lower case 26 from above, and the sensing member 40 is held in the lower case 26.

The first slot side 221 is spaced a greater distance from the second slot side 222, and the baffle 29 is attached to the bottom of the test slot 22 and leads to the test assembly 40.

As the sample flows along the flow guide plate 29 into the detection assembly 40, the sample accumulates in the angle between the detection assembly 40 and the flow guide plate 29, facilitating the absorption of the sample by the detection assembly 40 from the bottom.

Alternatively, the detection slot 22 may also be a groove that is disposed through in the width direction of the detection component 40, and the bottom of the detection component 40 is completely inserted into the detection slot 22. The guide plate 29 can be connected at the upper end edge of the detection slot 22, a through hole can be further formed in the middle or the bottom of the detection slot 22, the guide plate 29 is communicated with the through hole, a sample flows into the detection slot 22 through the through hole, and the sample can be accumulated in the detection slot 22.

Further, as shown in fig. 17 and 19, the housing 20 includes an upper shell 25 and a lower shell 26, a sampling installation groove 251 is provided on the upper shell 25, the sampling assembly 30 is inserted into the sampling installation groove 251, and after the upper shell 25 and the lower shell 26 are fastened, the bottom end of the sampling installation groove 251 is inserted into the upper end of the sample reserving groove 11.

Specifically, as shown in fig. 19, the upper case 25 further includes a top plate 253, and the sampling installation groove 251 is installed on the top plate 253, with the sampling installation groove 251 extending in a vertical direction.

The lower case 26 has a barrel shape with an upper opening, and after the upper case 25 is fastened to the lower case 26, the top plate 253 covers the opening of the lower case 26, and the sampling installation groove 251 is inserted into the cavity of the lower case 26.

As shown in fig. 17, the sampling mounting groove 251 is inserted into the sample reserving groove 11, and the bottom end of the sampling mounting groove 251 is opened, so that the sample flows into the sample reserving groove 11 from the sampling assembly 30 after the bottom end of the sampling assembly 30 is inserted into the sampling mounting groove 251.

In addition, when the top plate 253 closes the opening of the lower case 26, it is also possible to close the detection member 40 in the lower case 26.

Further, as shown in fig. 17, a sample retention groove seal ring 16 is provided between the upper end face edge of the sample retention groove 11 and the sampling attachment groove 251.

The sample reserving groove sealing ring 16 is used for sealing a gap between the sample reserving groove 11 and the sampling installation groove 251 to prevent the sample from leaking.

Further, as shown in fig. 17 and 19, a sample outflow hole 251c is formed at the bottom of the sampling mounting groove 251, and after the sampling mounting groove 251 is inserted into the sample reserving groove 11, the sample outflow hole 251c is located above the sample reserving groove 11, and a part of the sample flows into the detecting unit 40 through the sample outflow hole 251 c.

Specifically, the lowest end of the sampling mounting groove 251 is inserted into the sample reserving groove 11, and the sample outlet hole 251c is located above the upper edge of the sample reserving groove 11 after insertion. A part of the sample flows from the sample outlet 251c onto the flow guide plate 29 and then flows down the flow guide plate 29 obliquely into the detection unit 40.

Further, as shown in fig. 17, the sampling assembly 30 includes, in order from top to bottom, a sampling stick cover 33, a sampling stick 32, and a sponge head 31, and a sample amount test paper 34 is mounted in the sampling stick 32 and is in contact with the sponge head 31. After the sampling rod 32 and the sponge head 31 are inserted into the sampling mounting groove 251, the sampling rod cover 33 is clamped with the upper end of the sampling mounting groove 251 to fixedly connect the sampling assembly 30 with the upper shell 25.

Further, as shown in fig. 17, the sponge head 31 blocks the upper end opening of the sample retention groove 11.

The sponge head 31 is used for collecting samples, and after the sampling assembly 30 is inserted into the sampling installation groove 251, the sponge head 31 is compressed to extrude the samples, and the samples flow into the sample reserving groove 11. The sponge head 31 is kept in a compressed state and blocks the upper end opening of the sample retention groove 11, namely the bottom end opening of the sampling installation groove 251, and the sample is prevented from flowing back to the sampling assembly 30.

Further, as shown in fig. 19 to 20, the cross-sectional area of the sampling fitting groove 251 is gradually reduced, and the sponge head 31 is gradually compressed after being inserted into the sampling fitting groove 251.

Specifically, the upper half section of the sampling mounting groove 251 is cylindrical, the middle part of the lower half section is convex, two side surfaces are concave inwards to form two extrusion surfaces 251b which are inclined inwards relatively, a small cavity is formed between the extrusion surfaces 251b, the cross sectional area of the sponge head 31 when expanding is larger than that of the extrusion surfaces 251b, and when the sponge head 31 passes through the extrusion surfaces 251b, the sponge head is compressed and deformed to extrude a sample. The two squeezing surfaces 251b can squeeze out the sampling liquid of the sponge head 31 in advance, so that a closed space is prevented from being formed when the sponge head 31 is pressed to the bottom of the sampling mounting groove 251, and the liquid is not easy to squeeze out or is not squeezed enough.

Alternatively, the sampling fitting groove 251 may be formed as a conical tube having a gradually reduced inner diameter to gradually compress the sponge head 31. Or other shaped cavity with a large upper part and a small lower part.

In this embodiment, when the sample testing device is used, a sample is collected through the sampling assembly 30, the sampling assembly 30 collects the sample and then inserts the sample into the housing 20, the sample is directly extruded into the sample reserving groove 11, a part of the sample flows into the testing slot 22 through the sample outflow hole 251c and the guide plate 29, and the sample is absorbed by the testing assembly 40 and is subjected to primary testing through the testing paper 41. Also a portion of the sample is retained in the sample retention well 11, and when a retest is required, the sampling assembly 30 is taken out of the housing 20, and then the sample retained in the sample retention well 11 is sucked up by an external pipette.

The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.

Claims

1. A body fluid detection device comprises a shell (20), a sampling assembly (30) and a detection assembly (40), wherein the sampling assembly (30) comprises a sampling rod (32) and a sponge head (31), the sponge head (31) is arranged at the bottom end of the sampling rod (32), the sponge head (31) is used for absorbing a sample, after the sampling rod (32) inserts the sponge head (31) after sampling into the shell (20), the sampling assembly (30) is tightly matched with the shell (20) for extruding the sample in the sponge head (31); the sample collection and storage device is characterized by further comprising a sample collection and storage assembly (10), wherein the sample collection and storage assembly (10) comprises a sample collection and storage groove (11) and a sample collection and storage unit, the sample collection and storage groove (11) is arranged in the shell (20), the sample collection and storage groove (11) is connected between the sampling assembly (30) and the detection assembly (40) after the sampling assembly (30) and the detection assembly (40) are installed in the shell (20), and the sample collection and storage unit is installed in the shell (20) and inserted into the sample collection and storage groove (11) and used for storing part of samples for taking during subsequent retesting.

2. The body fluid testing device according to claim 1, wherein a sampling slot (21) and a testing slot (22) are provided in said housing (20), said sample retention slot (11) is provided between said sampling slot (21) and said testing slot (22), said sampling assembly (30) is inserted into said sampling slot (21), and said testing assembly (40) is inserted into said testing slot (22).

3. The device for detecting body fluid according to claim 2, wherein a first flow channel (23) and a second flow channel (24) are provided in the housing (20), the first flow channel (23) communicates the sampling slot (21) and the sample retention groove (11), and the second flow channel (24) communicates the sample retention groove (11) and the detection slot (22).

4. The body fluid testing device according to claim 2, wherein said sampling slot (21), said sample retention slot (11) and said testing slot (22) are arranged in order obliquely downward.

5. The body fluid testing device according to claim 1, wherein said sample retention groove (11) is provided within a bottom portion of said housing (20), said sampling assembly (30) being inserted into said sample retention groove (11).

6. The body fluid testing device according to claim 1, wherein the sample retention storage unit comprises a sample retention pipette (12) and a sample retention pipette cap (13), the sample retention pipette (12) comprises a pipette body (121) and a rubber bag (122), the lower end of the pipette body (121) is inserted into the sample retention groove (11), the rubber bag (122) is inserted into the sample retention pipette cap (13) and is held, and the sample retention pipette cap (13) is used for connecting with the housing (20).

7. The body fluid testing device according to claim 1, wherein said retention sample holding unit comprises a retention sample rod (14) and a sealing ring (15), the lower end of said retention sample rod (14) is inserted into said retention sample groove (11), said sealing ring (15) is sleeved on the outside of said retention sample rod (14) for sealing said retention sample rod (14).

8. The body fluid testing device according to claim 1, wherein a sampling mounting groove (251) is provided in said housing (20), and after said sampling rod (32) is inserted into said sampling mounting groove (251), said sponge head (31) is pressed against the bottom of said sampling mounting groove (251) and the sample is squeezed out.

9. The device for detecting body fluid according to claim 8, wherein the sampling assembly (30) further comprises a sampling rod cover (33), the sampling rod cover (33) is connected with the top end of the sampling rod (32), a one-way tooth portion (252) is provided on the housing (20), and after the sampling rod (32) is inserted into the sampling installation groove (251), the sampling rod cover (33) is matched with the one-way tooth portion (252) to compress the sponge head (31).

10. The body fluid testing device of claim 8, wherein a buckle (251 a) is disposed on an inner wall of the sampling mounting groove (251), the sampling assembly (30) further comprises a sampling rod end (35), the sampling rod end (35) is connected with a top end of the sampling rod (32), and after the sampling rod (32) is inserted into the sampling mounting groove (251), the sampling rod end (35) is buckled with the buckle (251 a) so as to compress the sponge head (31).

11. The body fluid testing device according to claim 8, wherein the cross-sectional area of said sampling mounting groove (251) is gradually reduced, and said sponge head (31) is gradually compressed after being inserted into said sampling mounting groove (251).