Biochemical detection device

Abstract

The utility model provides a biochemical detection device, which relates to the technical field of body fluid sample testing devices, including a detection body, a detection strip and a piston; the detection body includes an isolation mechanism, a accommodating chamber and a detection chamber, the detection strip is pre-installed in the detection chamber, and the isolation mechanism is used to separate the liquid to be tested from the detection strip, so as to ensure that the liquid to be tested will not contact the detection strip during the sampling process; the isolation mechanism includes a piston channel, the piston can temporarily store the liquid to be tested in the accommodating chamber in the transfer groove through a transfer groove and a first through hole, the piston can arrange the transfer groove and the second through hole correspondingly, so as to transport the liquid to be tested temporarily stored in the transfer groove to the detection chamber through the second through hole, so as to ensure that the detection strip and the liquid to be tested are contacted and reacted; at the same time, the liquid to be tested in the accommodating chamber will not be contaminated, and secondary detection can be performed, which alleviates the technical problems of inconvenient body fluid transportation, complicated operation steps, easy misoperation and test failure in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of body fluid sample testing devices, in particular to a biochemical detection device. Background Art

[0002] With the popularization of in vitro diagnostic products, people's demand for in vitro diagnostic products tends to be diversified and simplified, especially the simplification has the characteristics of simple and easy operation. Urine examination is a medical detection method, including routine urine analysis. Urinalysis usually uses multiple test strips to quickly screen and analyze urine, that is, routine urine analysis. The test strip method is a simple and rapid urine screening method. At present, the routine urine test strips check items include pH, protein, occult blood, specific gravity, glucose, ketone bodies, urobilinogen, nitrate, white blood cells, and some test strips also integrate bilirubin and vitamin C; urine examination is of great value for clinical diagnosis, judgment of efficacy and prognosis. Due to different urine examination items, the requirements and processing of urine specimens are also different.

[0003] In the prior art, the instant quantitative sampler can be used to test urine by the user. The sampler includes a urine cup, a folding tube and a test tube. The bottom of the urine cup is directly connected to the folding tube, which is easy to leave urine residue in the folding tube, which is unhygienic. At the same time, the connection between the folding tube and the test tube and the transportation of urine are inconvenient and complicated to operate. In the routine urine test, the test tube has a low liquid level due to the diameter of the tube. The test paper or other equipment cannot directly penetrate into the test tube for testing, and needs to be transferred to other instruments with a small diameter, resulting in cumbersome operation steps and easy misoperation, resulting in test failure. Utility Model Content

[0004] The utility model aims to provide a biochemical detection device to alleviate the technical problems existing in the prior art, such as inconvenient body fluid transportation, complicated operation steps, easy misoperation and test failure.

[0005] The utility model provides a biochemical detection device, comprising: a detection body, a detection strip and a piston;

[0006] The detection body comprises an isolation mechanism, a containing cavity and a detection cavity, wherein the containing cavity and the detection cavity form two independent chambers through the isolation mechanism, the containing cavity is used to contain the liquid to be detected, and the detection strip is arranged in the detection cavity;

[0007] The isolation mechanism includes a piston channel, a first through hole and a second through hole are arranged at intervals along the extension direction of the piston channel, the piston channel is connected to the accommodating chamber through the first through hole, and the piston channel is connected to the detection chamber through the second through hole, a pipetting groove is arranged along the circumferential direction of the piston, the piston is slidably connected to the piston channel, the piston can be arranged corresponding to the first through hole through the pipetting groove, so that the liquid to be tested in the accommodating chamber is temporarily stored in the pipetting groove, the piston can move along the piston channel, so that the pipetting groove and the second through hole are arranged correspondingly, so as to transport the liquid to be tested temporarily stored in the pipetting groove to the detection chamber through the second through hole, and the detection strip is used for contact reaction detection of the liquid to be tested.

[0008] In a preferred embodiment of the utility model, the piston comprises a piston body and a sealing mechanism;

[0009] The piston channel has an opening corresponding to the side wall of the detection body, and the piston body extends into the interior of the piston channel through the opening. The sealing mechanism is arranged in a ring along the circumferential direction of the piston body. The piston body forms an annular seal with the inner wall of the piston channel through the sealing mechanism, so as to limit the outflow of the liquid to be tested in the piston channel through the sealing mechanism.

[0010] In a preferred embodiment of the utility model, the sealing mechanism includes a first sealing protrusion, a second sealing protrusion and a third sealing protrusion;

[0011] The first sealing protrusion, the second sealing protrusion and the third sealing protrusion are arranged at intervals along the axial direction of the piston body, the pipetting groove is arranged in an annular shape along the circumferential direction of the piston body, the pipetting groove is located between the first sealing protrusion and the second sealing protrusion, and the first sealing protrusion and the second sealing protrusion are used to limit the liquid to be measured in the pipetting groove to be accommodated in the pipetting cavity formed by the pipetting groove and the piston channel;

[0012] The distance between the third sealing protrusion and one end of the piston body extending into the piston channel is greater than the distance from the first through hole to the end of the piston channel, so that when the pipetting groove and the second through hole are arranged correspondingly, the first through hole is located between the second sealing protrusion and the third sealing protrusion.

[0013] In a preferred embodiment of the present utility model, the sealing mechanism further comprises a sealing ring;

[0014] There are multiple sealing rings, and at least one sealing ring is annularly arranged on the first sealing protrusion, the second sealing protrusion and the third sealing protrusion. The first sealing protrusion, the second sealing protrusion and the third sealing protrusion are all slidably sealed with the inner wall of the piston channel through the sealing ring.

[0015] In a preferred embodiment of the utility model, the isolation mechanism further includes an isolation plate;

[0016] The isolation plate is connected to the inner wall of the detection body, and the isolation plate is connected to the outer wall of the piston channel. The isolation plate and the piston channel are used to jointly form the accommodating cavity and the detection cavity into two independent chambers.

[0017] In a preferred embodiment of the utility model, the cross-section of the piston channel is formed into a circle, the isolation plate is arranged perpendicular to the inner wall of the detection body, and the extension plane of the isolation plate divides the side wall of the piston channel into a first arc surface and a second arc surface arranged oppositely, the first through hole is arranged on the first arc surface, and the second through hole is located on the second arc surface.

[0018] In a preferred embodiment of the present invention, the first through hole is a long strip hole, the length direction of the first through hole extends along the circumferential direction of the first arc-shaped surface, both ends of the first through hole along the length direction are spaced from the isolation plate, the width direction of the first through hole extends along the axial direction of the first arc-shaped surface, and the width range of the first through hole is smaller than the width of the pipetting groove;

[0019] The second through hole is a long strip hole, the length direction of the second through hole extends along the circumferential direction of the second arc-shaped surface, and there is a gap between the two ends of the second through hole along the length direction and the isolation plate. The width direction of the second through hole extends along the axial direction of the second arc-shaped surface, and the width range of the second through hole is smaller than the width of the pipette groove.

[0020] In a preferred embodiment of the present utility model, the detection body includes a cup cover, a cup body and a cup bottom;

[0021] The cup cover and the cup bottom are respectively connected to the two ends of the cup body, the isolation mechanism is located in the cup body, and the isolation mechanism is connected to the cup body, the cup body and the cup cover form the accommodating cavity, the cup body and the cup bottom form the detection cavity, and the detection strip is connected to the inner wall of the cup bottom.

[0022] In a preferred embodiment of the present utility model, the detection body further includes a mounting groove and a limit plate;

[0023] The mounting groove is arranged on a side surface of the cup bottom facing the isolation mechanism, and the detection strip is connected to the cup bottom through the mounting groove;

[0024] One end of the limit plate is connected to the isolation mechanism, and the other end of the limit plate is in contact with the installation slot. The limit plate is used to limit the detection strip in the installation slot.

[0025] In a preferred embodiment of the present invention, an overflow groove is provided on the surface of the cup bottom having the mounting groove.

[0026] The utility model provides a biochemical detection device, comprising: a detection body, a detection strip and a piston; the detection body comprises an isolation mechanism, a accommodating chamber and a detection chamber, the accommodating chamber and the detection chamber form two independent chambers through the isolation mechanism, the accommodating chamber is used to accommodate a liquid to be detected, and the detection strip is arranged in the detection chamber; the detection strip is pre-installed in the detection chamber, and there is no need to manually assemble the detection strip during use, and the liquid to be detected is separated from the detection strip by the isolation mechanism to ensure that the liquid to be detected does not contact the detection strip during sampling; the isolation mechanism comprises a piston channel, and a first through hole and a second through hole are arranged at intervals along the extension direction of the piston channel, the piston channel is connected to the accommodating chamber through the first through hole, and the piston channel is connected to the detection chamber through the second through hole, and along the A pipetting groove is arranged in the circumferential direction of the piston, and the piston is slidably connected to the piston channel. The piston can be arranged correspondingly to the first through hole through the pipetting groove, so that the liquid to be tested in the accommodating chamber is temporarily stored in the pipetting groove. The piston can move along the piston channel so that the pipetting groove is arranged correspondingly to the second through hole, so that the liquid to be tested temporarily stored in the pipetting groove is transported to the detection chamber through the second through hole, and part of the liquid to be tested is transported to the detection chamber through the movement of the piston, so as to ensure that the test strip and the liquid to be tested are contacted and reacted. At the same time, the liquid to be tested in the accommodating chamber will not be contaminated, and secondary detection can be performed, which alleviates the technical problems of inconvenient body fluid transportation, complicated operation steps, easy misoperation, and test failure in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the overall appearance of the biochemical detection device provided by the embodiment of the utility model;

[0029] Figure 2 A schematic diagram of the cross-sectional structure of the biochemical detection device provided by an embodiment of the utility model along the axial direction of the piston channel;

[0030] Figure 3A schematic diagram of the cross-sectional structure of the biochemical detection device provided by an embodiment of the utility model along the radial direction of the piston channel;

[0031] Figure 4 A schematic diagram of the structure of a piston of a biochemical detection device provided by an embodiment of the utility model;

[0032] Figure 5 A schematic diagram of the structure inside the cup body of the biochemical detection device provided by an embodiment of the utility model;

[0033] Figure 6 A schematic diagram of the structure inside the cup bottom of the biochemical detection device provided by an embodiment of the utility model.

[0034] Icons: 100-detection body; 110-isolation mechanism; 111-piston channel; 112-first through hole; 113-second through hole; 114-opening; 115-isolation plate; 120-accommodation chamber; 130-detection chamber; 140-cup cover; 150-cup body; 160-cup bottom; 161-overflow groove; 170-installation groove; 180-limiting plate; 200-detection strip; 300-piston; 310-piston body; 311-pipette groove; 320-sealing mechanism; 321-first sealing protrusion; 322-second sealing protrusion; 323-third sealing protrusion; 324-sealing ring. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figure 1-Figure 6As shown, a biochemical detection device provided in this embodiment includes: a detection body 100, a detection strip 200 and a piston 300; the detection body 100 includes an isolation mechanism 110, a receiving chamber 120 and a detection chamber 130, the receiving chamber 120 and the detection chamber 130 form two independent chambers through the isolation mechanism 110, the receiving chamber 120 is used to receive the liquid to be tested, and the detection strip 200 is arranged in the detection chamber 130; the isolation mechanism 110 includes a piston channel 111, and a first through hole 112 and a second through hole 113 are arranged at intervals along the extension direction of the piston channel 111, and the piston channel 111 is connected to the receiving chamber 120 through the first through hole 112 The piston channel 111 is connected to the detection chamber 130 through the second through hole 113, and a pipetting groove 311 is arranged along the circumferential direction of the piston 300. The piston 300 is slidably connected to the piston channel 111. The piston 300 can be arranged correspondingly to the first through hole 112 through the pipetting groove 311, so that the liquid to be tested in the accommodating chamber 120 is temporarily stored in the pipetting groove 311. The piston 300 can move along the piston channel 111 so that the pipetting groove 311 is arranged correspondingly to the second through hole 113, so as to transport the liquid to be tested temporarily stored in the pipetting groove 311 to the detection chamber 130 through the second through hole 113, and the detection strip 200 is used for contact reaction detection of the liquid to be tested.

[0037] It should be noted that the biochemical detection device provided in this embodiment can perform separate sampling, collection and detection of the liquid to be tested. Specifically, the detection body 100 serves as a structure for sampling, collecting and detecting the liquid to be tested. The interior of the detection body 100 is separated by an isolation mechanism 110 to form two independent accommodating chambers 120 and detection chambers 130. The liquid to be tested can be accommodated in the accommodating chamber 120, and the detection strip 200 is pre-installed in the detection chamber 130. The piston 300 serves as a conveying structure for the accommodating chamber 120 and the detection chamber 130. The piston 300 is slidably installed in the piston channel 111. The piston channel 111 is respectively provided with a first through hole 112 and a second through hole 113 on two side walls opposite to the accommodating chamber 120 and the detection chamber 130. The piston 300 is slidably sealed and connected to the piston channel 111, that is, the piston 300 can seal and block the piston channel 111 to ensure that during the sampling process, the accommodating chamber 120 and the detection chamber 130 are in a completely isolated state, thereby realizing separate sampling of the liquid to be tested. and collection; when the liquid to be tested in the accommodating chamber 120 is sampled, the piston 300 is arranged corresponding to the first through hole 112 by using the pipetting groove 311, and the liquid to be tested in the accommodating chamber 120 flows into the pipetting groove 311 based on gravity, and the pipetting groove 311 is used to temporarily store part of the liquid to be tested. At this time, the piston 300 moves relative to the piston channel 111, and when the pipetting groove 311 moves out of the position of the first through hole 112, the piston 300 forms a sealing blockage on the first through hole 112, and when the pipetting groove 311 moves When it reaches the position of the second through hole 113, the liquid to be tested in the pipetting groove 311 flows into the detection chamber 130 through the second through hole 113, and is tested by contacting and reacting with the test strip 200 in the detection chamber 130; at the same time, since the liquid to be tested remaining in the accommodating chamber 120 does not contact and react with the test strip 200, that is, the liquid to be tested in the accommodating chamber 120 is not contaminated, a secondary test can be performed; optionally, the liquid to be tested can be urine or other body fluids, etc.

[0038] The biochemical detection device provided in this embodiment includes: a detection body 100, a detection strip 200 and a piston 300; the detection body 100 includes an isolation mechanism 110, a receiving chamber 120 and a detection chamber 130, the receiving chamber 120 and the detection chamber 130 form two independent chambers through the isolation mechanism 110, the receiving chamber 120 is used to receive the liquid to be detected, and the detection strip 200 is arranged in the detection chamber 130; the detection strip 200 is pre-installed in the detection chamber 130, and there is no need to manually assemble the detection strip 200 during use. The isolation mechanism 110 is used to separate the liquid to be detected from the detection strip 200 to ensure that the liquid to be detected does not contact the detection strip 200 during sampling; the isolation mechanism 110 includes a piston channel 111, and a first through hole 112 and a second through hole 113 are arranged at intervals along the extension direction of the piston channel 111, the piston channel 111 is connected to the receiving chamber 120 through the first through hole 112, and the piston channel 111 is connected to the receiving chamber 120 through the second through hole 113 is connected to the detection chamber 130, a pipetting groove 311 is arranged along the circumferential direction of the piston 300, the piston 300 is slidably connected to the piston channel 111, the piston 300 can be arranged correspondingly with the first through hole 112 through the pipetting groove 311, so that the liquid to be tested in the accommodating chamber 120 is temporarily stored in the pipetting groove 311, the piston 300 can move along the piston channel 111, so that the pipetting groove 311 and the second through hole 113 are arranged correspondingly, so that the liquid to be tested temporarily stored in the pipetting groove 311 is transported to the detection chamber 130 through the second through hole 113, and part of the liquid to be tested is transported to the detection chamber 130 through the movement of the piston 300, so as to ensure that the test strip 200 and the liquid to be tested are contacted and reacted. At the same time, the liquid to be tested in the accommodating chamber 120 will not be contaminated, and a secondary test can be performed, which alleviates the technical problems of inconvenient body fluid transportation, cumbersome operation steps, easy misoperation, and test failure in the prior art.

[0039] On the basis of the above embodiments, further, in a preferred embodiment of the utility model, the piston 300 includes a piston body 310 and a sealing mechanism 320; the piston channel 111 has an opening 114 on the side wall corresponding to the detection body 100, and the piston body 310 extends into the interior of the piston channel 111 through the opening 114. The sealing mechanism 320 is arranged in a ring shape along the circumferential direction of the piston body 310. The piston body 310 forms an annular seal with the inner wall of the piston channel 111 through the sealing mechanism 320, so as to limit the outflow of the liquid to be tested in the piston channel 111 through the sealing mechanism 320.

[0040] In this embodiment, the piston body 310 extends into the interior of the piston channel 111 through the opening 114, and the piston body 310 forms a sliding seal with the inner wall of the piston channel 111 through the sealing mechanism 320, so as to ensure that the piston channel 111 is isolated from the accommodating chamber 120 and the detection chamber 130. At the same time, the pipetting groove 311 is set on the piston body 310. When the pipetting groove 311 temporarily stores the liquid to be tested, the sealing mechanism 320 can ensure that the liquid to be tested is sealed in the pipetting cavity formed by the pipetting groove 311 and the piston channel 111, thereby ensuring the quantitative delivery of the liquid to be tested.

[0041] Optionally, the piston body 310 has a handle at one end located outside the piston channel 111, and the handle can be used to conveniently hold the end of the piston body 310 to drive the piston body 310 to move relative to the piston channel 111; wherein the handle can be a handle extending out of the piston body 310, or the handle can also be set in a groove at the end of the piston body 310.

[0042] In a preferred embodiment of the utility model, the sealing mechanism 320 includes a first sealing protrusion 321, a second sealing protrusion 322 and a third sealing protrusion 323; the first sealing protrusion 321, the second sealing protrusion 322 and the third sealing protrusion 323 are arranged at intervals along the axial direction of the piston body 310, the transfer groove 311 is arranged in an annular manner along the circumferential direction of the piston body 310, and the transfer groove 311 is located between the first sealing protrusion 321 and the second sealing protrusion 322, and the first sealing protrusion 321 and the second sealing protrusion 322 are used to limit the liquid to be measured in the transfer groove 311 to be accommodated in the transfer cavity formed by the transfer groove 311 and the piston channel 111; the distance between the third sealing protrusion 323 and the piston body 310 extending into one end of the piston channel 111 is greater than the distance from the first through hole 112 to the end of the piston channel 111, so that when the transfer groove 311 and the second through hole 113 are arranged correspondingly, the first through hole 112 is located between the second sealing protrusion 322 and the third sealing protrusion 323.

[0043] In this embodiment, the extension length of the piston body 310 is adapted to the extension length of the piston channel 111, and the first sealing protrusion 321, the second sealing protrusion 322 and the third sealing protrusion 323 are arranged at intervals from one end to the other end of the piston channel 111 along the piston body 310, and the transfer groove 311 is located between the first sealing protrusion 321 and the second sealing protrusion 322, that is, when the transfer groove 311 and the first through hole 112 correspond to receive the liquid to be tested flowing into the accommodating chamber 120, the first sealing protrusion 321 and the second sealing protrusion 322 serve as the side walls of the two ends of the transfer groove 311, ensuring that the transfer groove 311 and the piston channel 111 are in contact with each other. The inner wall of the plug channel 111 forms a sealed pipetting chamber. At the same time, the third sealing protrusion 323 is located at one end of the piston body 310 close to the opening 114. After the piston body 310 is extended along the piston channel 111, the pipetting groove 311 can move to the position of the second through hole 113. At this time, the first through hole 112 is located between the second sealing protrusion 322 and the third sealing protrusion 323. The second sealing protrusion 322 can limit the flow of the liquid to be tested in the piston channel 111, and the third sealing protrusion 323 can limit the liquid to be tested in the piston channel 111 from flowing out through the opening 114, thereby ensuring the overall stability.

[0044] Optionally, the volume of the pipetting groove 311 can be quantitatively set according to the detection requirements to achieve the requirement of quantitative detection of the liquid to be detected.

[0045] In a preferred embodiment of the utility model, the sealing mechanism 320 also includes a sealing ring 324; there are multiple sealing rings 324, and at least one sealing ring 324 is annularly arranged on the first sealing protrusion 321, the second sealing protrusion 322 and the third sealing protrusion 323, and the first sealing protrusion 321, the second sealing protrusion 322 and the third sealing protrusion 323 are all slidably sealed with the inner wall of the piston channel 111 through the sealing ring 324.

[0046] In this embodiment, sealing grooves are arranged in annular shapes on the first sealing protrusion 321, the second sealing protrusion 322 and the third sealing protrusion 323. The first sealing protrusion 321, the second sealing protrusion 322 and the third sealing protrusion 323 are respectively annularly clamped with the sealing ring 324 through the sealing grooves. At the same time, the first sealing protrusion 321, the second sealing protrusion 322 and the third sealing protrusion 323 respectively ensure the sliding sealing requirements with the piston channel 111 through the sealing ring 324; optionally, the sealing ring 324 can be an O-ring.

[0047] In a preferred embodiment of the present invention, the isolation mechanism 110 also includes an isolation plate 115; the isolation plate 115 is connected to the inner wall of the detection body 100, and the isolation plate 115 is connected to the outer wall of the piston channel 111, and the isolation plate 115 and the piston channel 111 are used to jointly form the accommodating chamber 120 and the detection chamber 130 into two independent chambers.

[0048] In this embodiment, the piston channel 111 and the isolation plate 115 are integrally formed, and the outer wall of the piston channel 111 and the isolation plate 115 together complete the isolation setting of the accommodating chamber 120 and the detection chamber 130, so as to ensure that the liquid to be tested in the detection chamber 130 can only enter the pipetting groove 311 through the first through hole 112.

[0049] In a preferred embodiment of the present invention, the cross-section of the piston channel 111 is formed into a circle, the isolation plate 115 is arranged perpendicular to the inner wall of the detection body 100, and the extension plane of the isolation plate 115 divides the side wall of the piston channel 111 into a first arc surface and a second arc surface which are arranged oppositely, the first through hole 112 is arranged on the first arc surface, and the second through hole 113 is located on the second arc surface.

[0050] In this embodiment, the piston channel 111 can be a cylindrical channel, and the isolation plate 115 can be extended along the radial center line of the piston channel 111. With the isolation plate 115 as the boundary, the piston channel 111 forms a first arc surface and a second arc surface that are relatively arranged, wherein the isolation plate 115 can be horizontally arranged, and the first through hole 112 is arranged on the first arc surface, so that the liquid to be tested can enter the pipetting groove 311 under the action of gravity. At the same time, the second through hole 113 is arranged on the second arc surface, which can also enable the liquid to be tested to enter the detection cavity 130 under the action of gravity.

[0051] In a preferred embodiment of the present invention, the first through hole 112 is an elongated hole, the length direction of the first through hole 112 extends along the circumferential direction of the first arcuate surface, and there is a gap between the two ends along the length direction of the first through hole 112 and the isolation plate 115, and the width direction of the first through hole 112 extends along the axial direction of the first arcuate surface, and the width range of the first through hole 112 is smaller than the width of the pipette groove 311; the second through hole 113 is an elongated hole, the length direction of the second through hole 113 extends along the circumferential direction of the second arcuate surface, and there is a gap between the two ends along the length direction of the second through hole 113 and the isolation plate 115, and the width direction of the second through hole 113 extends along the axial direction of the second arcuate surface, and the width range of the second through hole 113 is smaller than the width of the pipette groove 311.

[0052] In this embodiment, the first through hole 112 is an arc-shaped long hole. The first through hole 112 can be extended along the circumferential direction of the first arc-shaped surface. The length range of the first through hole 112 is smaller than the circumferential length of the first arc-shaped surface, so as to ensure that the isolation plate 115 has a barrier effect on the liquid to be tested in the accommodating cavity 120. At the same time, the width range of the first through hole 112 is smaller than the width of the pipetting groove 311, so as to ensure that the liquid to be tested flowing out through the first through hole 112 completely flows into the pipetting groove 311, and the first through hole 112 with a long hole structure can better ensure the flow of the liquid to be tested. movement; similarly, the second through hole 113 adopts an arc-shaped long strip hole, and the second through hole 113 can be extended along the circumferential direction of the second arc-shaped surface. The length range of the second through hole 113 is smaller than the circumferential length of the second arc-shaped surface, so as to ensure the barrier effect of the isolation plate 115 on the detection cavity 130, and at the same time, the width range of the second through hole 113 is smaller than the width of the pipetting groove 311, ensuring that the liquid to be tested in the pipetting groove 311 flows into the detection cavity 130 through the second through hole 113, and the second through hole 113 with a long strip hole structure can better ensure the flow of the liquid to be tested.

[0053] In a preferred embodiment of the present invention, the detection body 100 includes a cup cover 140, a cup body 150 and a cup bottom 160; the cup cover 140 and the cup bottom 160 are respectively connected to the two ends of the cup body 150, the isolation mechanism 110 is located in the cup body 150, and the isolation mechanism 110 is connected to the cup body 150, the cup body 150 and the cup cover 140 form a accommodating cavity 120, the cup body 150 and the cup bottom 160 form a detection cavity 130, and the detection strip 200 is connected to the inner wall of the cup bottom 160.

[0054] In this embodiment, the cup body 150 serves as a sampling structure for the liquid to be tested, and the liquid to be tested can be contained in the containing cavity 120 of the cup body 150, wherein a detection strip 200 is pre-installed on the surface of the cup bottom 160, and the isolation mechanism 110 separates the space of the cup body 150 close to the cup bottom 160 from the cup bottom 160 to form a detection cavity 130, and the cup body 150 and the cup cover 140 are detachably connected to facilitate the sampling and collection of the liquid to be tested by the cup body 150, and the cup cover 140 and the cup body 150 can be connected by snapping, so that the cup cover 140 and the cup body 150 form a sealed connection to ensure the sealing requirement of the containing cavity 120.

[0055] Optionally, the cup body 150 and the cup bottom 160 may both be made of transparent material to facilitate observation of the reaction state of the detection strip 200 .

[0056] In a preferred embodiment of the utility model, the detection body 100 also includes a mounting groove 170 and a limiting plate 180; the mounting groove 170 is arranged on the side surface of the cup bottom 160 facing the isolation mechanism 110, and the detection strip 200 is connected to the cup bottom 160 through the mounting groove 170; one end of the limiting plate 180 is connected to the isolation mechanism 110, and the other end of the limiting plate 180 is abutted against the mounting groove 170, and the limiting plate 180 is used to limit the detection strip 200 in the mounting groove 170.

[0057] In this embodiment, the card slot is located on the surface of the cup holder, and the card slot can be used to card and install the detection strip 200, thereby ensuring the stability of the detection strip 200 in the detection cavity 130; the limiting plate 180 can be vertically arranged relative to the cup body 150, that is, one end of the limiting plate 180 is fixedly connected to the isolation mechanism 110, and the other end of the limiting plate 180 can abut on the surface of the card slot, that is, the limiting plate 180 can abut against the detection strip 200 in the card slot, and the abutment and limiting of the limiting plate 180 ensures the stability of the detection strip 200 in the card slot, thereby preventing the detection strip 200 from shifting when flushed by the liquid to be tested, so as to avoid the situation where the detection strip 200 is not in place.

[0058] It should be noted that the test strip 200 can have various forms, such as an immunological or chemical test form for detecting analytes in a sample, such as drugs or related metabolites indicating physical conditions. A test strip 200 can use multiple materials for liquid transfer; one material of the test strip 200 can be superimposed on another material of the test strip 200, for example, filter paper is superimposed on nitrocellulose; or, an area of ​​the test strip 200 containing at least one material is located behind another area containing at least one different material; the test strip 200 can achieve feedback by adding a solution of a substance that generates a signal to the surface of the application area or immersing one or more materials in a signal solution; since the test strip 200 can adopt the biochemical strip in the prior art, the material of the test strip 200 is not limited here.

[0059] In a preferred embodiment of the present invention, an overflow groove 161 is formed on the surface of the cup bottom 160 having the mounting groove 170 .

[0060] In this embodiment, the overflow groove 161 can temporarily store the excess liquid to be tested that flows into the cup base. The overflow groove 161 can be extended along the surface of the cup base. At the same time, the volume of the overflow groove 161 is smaller than the total volume of the liquid to be tested that flows into the detection chamber 130, so as to ensure that the liquid to be tested can overflow the overflow groove 161 and contact and react with the detection strip 200.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A biochemical detection device, characterized in that: include: A detection body (100), a detection strip (200) and a piston (300); The detection body (100) comprises an isolation mechanism (110), a containing cavity (120) and a detection cavity (130); the containing cavity (120) and the detection cavity (130) form two independent chambers through the isolation mechanism (110); the containing cavity (120) is used to contain a liquid to be detected, and the detection strip (200) is arranged in the detection cavity (130); The isolation mechanism (110) comprises a piston channel (111), a first through hole (112) and a second through hole (113) are arranged at intervals along the extension direction of the piston channel (111), the piston channel (111) is connected to the accommodating chamber (120) through the first through hole (112), and the piston channel (111) is connected to the detection chamber (130) through the second through hole (113), a liquid transfer groove (311) is arranged along the circumferential direction of the piston (300), the piston (300) is slidably connected to the piston channel (111), and the The piston (300) can be arranged correspondingly with the first through hole (112) through the transfer groove (311), so that the liquid to be tested in the accommodating chamber (120) is temporarily stored in the transfer groove (311); the piston (300) can move along the piston channel (111), so that the transfer groove (311) and the second through hole (113) are arranged correspondingly, so that the liquid to be tested temporarily stored in the transfer groove (311) is transported to the detection chamber (130) through the second through hole (113); and the detection strip (200) is used for contact reaction detection of the liquid to be tested.

2. The biochemical detection device according to claim 1, characterized in that: The piston (300) comprises a piston body (310) and a sealing mechanism (320); The piston channel (111) has an opening (114) corresponding to the side wall of the detection body (100); the piston body (310) extends into the interior of the piston channel (111) through the opening (114); the sealing mechanism (320) is arranged in a ring shape along the circumferential direction of the piston body (310); the piston body (310) forms an annular seal with the inner wall of the piston channel (111) through the sealing mechanism (320), so as to limit the outflow of the liquid to be tested in the piston channel (111) through the sealing mechanism (320).

3. The biochemical detection device according to claim 2, characterized in that: The sealing mechanism (320) comprises a first sealing protrusion (321), a second sealing protrusion (322) and a third sealing protrusion (323); The first sealing protrusion (321), the second sealing protrusion (322) and the third sealing protrusion (323) are arranged at intervals along the axial direction of the piston body (310); the transfer groove (311) is arranged in an annular shape along the circumferential direction of the piston body (310); the transfer groove (311) is located between the first sealing protrusion (321) and the second sealing protrusion (322); the first sealing protrusion (321) and the second sealing protrusion (322) are used to limit the liquid to be measured in the transfer groove (311) to be accommodated in the transfer cavity formed by the transfer groove (311) and the piston channel (111); The distance between the third sealing protrusion (323) and one end of the piston body (310) extending into the piston channel (111) is greater than the distance between the first through hole (112) and the end of the piston channel (111), so that when the pipetting groove (311) and the second through hole (113) are arranged correspondingly, the first through hole (112) is located between the second sealing protrusion (322) and the third sealing protrusion (323).

4. The biochemical detection device according to claim 3, characterized in that: The sealing mechanism (320) further includes a sealing ring (324); The sealing ring (324) is provided in plurality, and at least one sealing ring (324) is provided in an annular shape on the first sealing protrusion (321), the second sealing protrusion (322) and the third sealing protrusion (323). The first sealing protrusion (321), the second sealing protrusion (322) and the third sealing protrusion (323) are all slidably sealed with the inner wall of the piston channel (111) through the sealing ring (324).

5. The biochemical detection device according to claim 2, characterized in that: The isolation mechanism (110) further includes an isolation plate (115); The isolation plate (115) is connected to the inner wall of the detection body (100), and the isolation plate (115) is connected to the outer wall of the piston channel (111), and the isolation plate (115) and the piston channel (111) are used to jointly form the accommodating chamber (120) and the detection chamber (130) into two independent chambers.

6. The biochemical detection device according to claim 5, characterized in that: The cross section of the piston channel (111) is formed in a circular shape, the isolation plate (115) is arranged perpendicular to the inner wall of the detection body (100), and the extension plane of the isolation plate (115) divides the side wall of the piston channel (111) into a first arcuate surface and a second arcuate surface arranged oppositely, the first through hole (112) is arranged on the first arcuate surface, and the second through hole (113) is located on the second arcuate surface.

7. The biochemical detection device according to claim 6, characterized in that: The first through hole (112) is a long strip hole. The length direction of the first through hole (112) extends along the circumferential direction of the first arc-shaped surface. Both ends of the first through hole (112) along the length direction are spaced from the isolation plate (115). The width direction of the first through hole (112) extends along the axial direction of the first arc-shaped surface. The width range of the first through hole (112) is smaller than the width of the transfer groove (311). The second through hole (113) is a long strip hole. The length direction of the second through hole (113) extends along the circumferential direction of the second arc-shaped surface. Both ends of the second through hole (113) along the length direction are spaced from the isolation plate (115). The width direction of the second through hole (113) extends along the axial direction of the second arc-shaped surface. The width range of the second through hole (113) is smaller than the width of the pipetting groove (311).

8. The biochemical detection device according to any one of claims 1 to 7, characterized in that: The detection body (100) comprises a cup cover (140), a cup body (150) and a cup bottom (160); The cup cover (140) and the cup bottom (160) are respectively connected to two ends of the cup body (150); the isolation mechanism (110) is located in the cup body (150), and the isolation mechanism (110) is connected to the cup body (150); the cup body (150) and the cup cover (140) form the accommodating cavity (120); the cup body (150) and the cup bottom (160) form the detection cavity (130); and the detection strip (200) is connected to the inner wall of the cup bottom (160).

9. The biochemical detection device according to claim 8, characterized in that: The detection body (100) further comprises a mounting groove (170) and a limiting plate (180); The mounting groove (170) is arranged on a side surface of the cup bottom (160) facing the isolation mechanism (110), and the detection strip (200) is connected to the cup bottom (160) through the mounting groove (170); One end of the limiting plate (180) is connected to the isolation mechanism (110), and the other end of the limiting plate (180) is in contact with the installation groove (170). The limiting plate (180) is used to limit the detection strip (200) within the installation groove (170).

10. The biochemical detection device according to claim 9, characterized in that: The cup bottom (160) has an overflow groove (161) on its surface with the mounting groove (170).

Images