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CN-224231782-U - Sampling detection device

CN224231782UCN 224231782 UCN224231782 UCN 224231782UCN-224231782-U

Abstract

The utility model discloses a sampling detection device which comprises a main body, a detection piece and a piston assembly. The main body is provided with a liquid suction port and a containing cavity which are communicated with each other, the detection piece is arranged in the containing cavity, the piston assembly is at least partially arranged in the containing cavity, and the piston assembly can move relative to the main body so that liquid enters the containing cavity from the liquid suction port to be in contact with the detection piece. The sampling detection device integrates sampling and detection, is convenient to use, is not easy to pollute, and has accurate detection results.

Inventors

  • XIE WEI
  • DING SHUAIJIE
  • YANG BIAO
  • LI XINYU

Assignees

  • 合肥综合性国家科学中心大健康研究院

Dates

Publication Date
20260512
Application Date
20250512

Claims (13)

  1. 1. A sampling detection apparatus, comprising: A main body (10), wherein the main body (10) is provided with a liquid suction port (101) and a containing cavity (102) which are communicated with each other; A detection member (20), wherein the detection member (20) is arranged in the accommodating cavity (102); The piston assembly (30) is at least partially arranged in the accommodating cavity (102), and the piston assembly (30) can move relative to the main body (10) so as to enable liquid to enter the accommodating cavity (102) from the liquid suction port (101) to be in contact with the detection piece (20).
  2. 2. The sampling detection device according to claim 1, wherein the piston assembly (30) comprises a pull rod (301) and a piston (302), one end of the pull rod (301) is located in the accommodating cavity (102) and is connected with the piston (302), the other end of the pull rod (301) is provided with a holding part (303), and the holding part (303) is located outside the main body (10).
  3. 3. The sampling detection device according to claim 2, wherein the other end of the pull rod (301) is provided with an indicator mark (304), the indicator mark (304) being used for marking a change of the movement position of the piston assembly (30).
  4. 4. The sampling detection device according to claim 2, wherein the piston assembly (30) comprises a plurality of the tie rods (301), the tie rods (301) extending along a first direction (F1), the plurality of tie rods (301) being arranged along a second direction (F2), the second direction (F2) being mutually perpendicular to the first direction (F1).
  5. 5. The sampling test device according to claim 4, further comprising a connecting member (305), the connecting member (305) forming the grip portion (303), the connecting member (305) connecting the other end portions of the plurality of tie rods (301).
  6. 6. The sampling detection device according to claim 1, wherein the body (10) has a first limit portion and a second limit portion, the first limit portion and the second limit portion being arranged spaced apart along the piston assembly (30) movement direction, the piston assembly (30) has a third limit portion and a fourth limit portion, the third limit portion and the fourth limit portion being arranged spaced apart along the piston assembly (30) movement direction, the first limit portion being cooperable with the third limit portion to limit a first limit movement position of the piston assembly (30), the second limit portion being cooperable with the fourth limit portion to limit a second limit movement position of the piston assembly (30).
  7. 7. The sampling test device according to any one of claims 1-6, wherein the body (10) has a partition (103), the partition (103) dividing the receiving chamber (102) into a first chamber (104) and a second chamber (105), the piston assembly (30) being provided in the first chamber (104), the test element (20) being at least partially provided in the second chamber (105), the first chamber (104) and the second chamber (105) being in communication via a communication hole (1031).
  8. 8. The sampling test device according to claim 7, wherein one end of the test element (20) extends through the communication hole (1031) and into the first chamber (104).
  9. 9. The sampling test device according to claim 8, wherein one end of the test piece (20) is interference fit with the communication hole (1031).
  10. 10. The sampling detection device according to claim 7, wherein the first chamber (104) comprises a first portion (1041) and a second portion (1042), the first portion (1041) being provided with the piston assembly (30), the second portion (1042) being provided between the fluid intake (101) and the first portion (1041), the second portion (1042) being of decreasing cross-sectional dimension in a direction approaching the fluid intake (101).
  11. 11. The sampling detection device according to claim 1, characterized in that the pipetting opening (101) is provided with a one-way valve which is unidirectionally conducted in the direction from the pipetting opening (101) to the receiving chamber (102).
  12. 12. The sampling detection device according to claim 7, wherein the body (10) comprises a first housing (106) and a second housing (107) which are mutually covered, the first housing (106) and the second housing (107) defining the receiving cavity (102), at least one of the first housing (106) and the second housing (107) being provided with the partition (103).
  13. 13. The sampling test device according to claim 1, wherein the test element (20) is an immunochromatographic test element, the main body (10) is formed with an observation window (108), and the observation window (108) is disposed corresponding to a result display area of the immunochromatographic test element.

Description

Sampling detection device Technical Field The utility model relates to the technical field of liquid detection, in particular to a sampling detection device. Background In the related art, an immunochromatography detection product is generally composed of a plastic housing and a test strip fixed in the plastic housing, wherein a sample adding hole is formed in the plastic housing, and the position of the sample adding hole corresponds to a sample pad of the test strip. When the dropper is used, the dropper is required to be matched for sampling, and the dropper is dripped into the sampling hole to control the amount of the sample added into the sampling hole, so that the operation is complex, and meanwhile, the dropper is easy to drop or secondary pollution is generated when being used for transferring, so that the detection result is inaccurate. Disclosure of utility model The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a sampling and detecting device, which is convenient to use, not easy to be polluted, and accurate in detection result. The sampling detection device comprises a main body, a detection piece and a piston assembly, wherein the main body is provided with a liquid suction port and a containing cavity which are communicated with each other, the detection piece is arranged in the containing cavity, the piston assembly is at least partially arranged in the containing cavity, and the piston assembly can move relative to the main body so that liquid enters the containing cavity from the liquid suction port to be in contact with the detection piece. According to the sampling detection device provided by the embodiment of the utility model, a dropper is not required to be adopted in sampling, the liquid suction port is directly extended into the liquid sample in sampling, then the piston assembly is pulled to suck the liquid sample into the accommodating cavity to be contacted with the detection piece, the liquid sample is not required to be transferred by matching with the liquid transfer structure, the operation is more convenient, and the problem that the liquid transfer structure is easy to drop or secondary pollution is caused when the liquid transfer structure is used for transferring is avoided, so that the detection result is inaccurate is also avoided. Secondly, the suction amount of the liquid sample can be controlled by controlling the moving distance of the piston assembly, namely, the amount of the liquid sample contacted with the detecting piece is controlled, so that a more accurate detecting result can be obtained. In some embodiments, the piston assembly includes a pull rod and a piston, one end of the pull rod is located in the accommodating cavity and connected with the piston, the other end of the pull rod has a holding part, and the holding part is located outside the main body. In some embodiments, the other end of the pull rod is provided with an indicator for marking a change in the position of movement of the piston assembly. In some embodiments, the piston assembly includes a plurality of the tie rods extending in a first direction, the plurality of tie rods being arranged in a second direction, the second direction being perpendicular to the first direction. In some embodiments, the sampling detection device further comprises a connector forming the grip, the connector connecting the other end portions of the plurality of tie rods. In some embodiments, the body has a first limit portion and a second limit portion spaced apart along the piston assembly movement direction, the piston assembly has a third limit portion and a fourth limit portion spaced apart along the piston assembly movement direction, the first limit portion is engageable with the third limit portion to limit a first limit movement position of the piston assembly, and the second limit portion is engageable with the fourth limit portion to limit a second limit movement position of the piston assembly. In some embodiments, the body has a partition separating the accommodation chamber to form a first chamber and a second chamber, the piston assembly is provided in the first chamber, the detection member is at least partially provided in the second chamber, and the first chamber and the second chamber are communicated through a communication hole. In some embodiments, one end of the detecting member penetrates through the communication hole and extends into the first chamber. In some embodiments, one end of the detection member is interference fit with the communication hole. In some embodiments, the first chamber includes a first portion provided with the piston assembly and a second portion provided between the liquid suction port and the first portion, the second portion gradually decreasing in cross-sectional dimension in a direction approaching the liquid suction port. In some embodiment