Search

CN-224203043-U - Photochemical analysis test strip structure

CN224203043UCN 224203043 UCN224203043 UCN 224203043UCN-224203043-U

Abstract

The utility model provides a photochemical analysis test strip structure which comprises a test strip body, wherein a sample injection area, a sample injection runner and a reaction detection area which are sequentially communicated are arranged in the test strip body, a sample injection port is arranged on the test strip body, a hydrophobic layer is arranged at the bottom of the reaction detection area, a notch and a guide hole which are sequentially communicated are formed in the hydrophobic layer, the guide hole and the reaction detection area are concentrically arranged, the part of the reaction detection area above the hydrophobic layer is an edge area, the rest part is a detection center area, reagents are arranged in the detection center area, and a plurality of first air holes communicated with the edge area are formed in the test strip body. Through the arrangement of the hydrophobic layer, the sample entering the reaction detection area is firstly filled in the detection center area and then is diffused to the edge area, the sample is guided to flow orderly, and the sample forces bubbles to migrate to the edge area in the flowing process and is discharged from the first air hole to the outside, so that the bubble interference of the detection center area is effectively eliminated, and the detection accuracy is improved.

Inventors

  • LI YUEHUI
  • CAI XIAOHUA
  • HU WENBIN

Assignees

  • 三诺生物传感股份有限公司

Dates

Publication Date
20260505
Application Date
20250418

Claims (10)

  1. 1. The photochemical analysis test strip structure comprises a test strip body (1), wherein a sample injection area (11), a sample injection runner (12) and a reaction detection area (13) which are sequentially communicated along the flowing direction of a sample are arranged in the test strip body (1), a sample injection port (61) communicated with the sample injection area (11) is arranged on the test strip body (1), and the photochemical analysis test strip is characterized in that, The bottom of the reaction detection area (13) is provided with a hydrophobic layer (4), the hydrophobic layer (4) is provided with a notch (41) and a guide hole (42) which are sequentially communicated along the flowing direction of a sample, the guide hole (42) and the reaction detection area (13) are concentrically arranged, the part of the reaction detection area (13) above the hydrophobic layer (4) is an edge area (132), the rest part is a detection center area (131), and a reagent is arranged in the detection center area (131); a plurality of first air holes (62) communicated with the edge area (132) are formed in the test strip body (1).
  2. 2. The photochemical analysis strip structure according to claim 1, characterized in that a plurality of said first air holes (62) are uniformly distributed over said edge region (132).
  3. 3. The photochemical analysis strip structure according to claim 2, characterized in that the first air holes (62) are provided as tapered holes, and the smaller side of the first air holes (62) faces the outside.
  4. 4. The photochemical analysis strip structure according to claim 1, characterized in that the sample introduction flow channel (12) is arranged in a serpentine shape.
  5. 5. The photochemical analysis strip structure according to claim 1, characterized in that the outlet of the sample introduction zone (11) is in communication with the first end of the sample introduction flow channel (12), the outlet of the sample introduction zone (11) being arranged as a tapering structure (111) towards the sample introduction flow channel (12).
  6. 6. The photochemical analysis strip structure according to claim 5, characterized in that the taper angle α of the tapered structure (111) is 5-30 °.
  7. 7. The photochemical analysis test strip structure according to any one of claims 1-6, wherein the test strip body (1) comprises a light-transmitting film (3), a double-sided adhesive layer (5) and a hydrophilic film (6) which are sequentially arranged from bottom to top, and the hydrophobic layer (4) is arranged between the light-transmitting film (3) and the double-sided adhesive layer (5); The double-sided adhesive layer (5) is provided with a sample injection hole (51), a sample injection guide groove (52) and a detection hole (53) which are sequentially communicated, and the hydrophilic film (6) is provided with a sample injection port (61); Sample introduction hole (51) with printing opacity membrane (3) and hydrophilic membrane (6) enclose into sample introduction district (11), sample introduction guide slot (52) with printing opacity membrane (3) and hydrophilic membrane (6) enclose into sample introduction runner (12), detection hole (53) with hydrophobic layer (4), printing opacity membrane (3) and hydrophilic membrane (6) enclose into reaction detection district (13).
  8. 8. The photochemical analysis strip structure according to claim 7, characterized in that a super-hydrophilic guide belt (63) is provided on the bottom surface of the hydrophilic membrane (6), and the super-hydrophilic guide belt (63) covers the outlet of the sample inlet hole (51) and the sample inlet guide groove (52).
  9. 9. The photochemical analysis test strip structure according to claim 7, wherein the test strip body (1) further comprises a cover film (2) arranged on the bottom surface of the light-transmitting film (3), and the cover film (2) is provided with light-transmitting holes (21) corresponding to the detection holes (53).
  10. 10. The photochemical analysis test strip structure according to claim 1, wherein the test strip body (1) is further provided with a waste liquid storage area (14), the waste liquid storage area (14) is communicated with the reaction detection area (13) and is positioned at the downstream of the reaction detection area (13), and the test strip body (1) is provided with a second air hole (64) communicated with the reaction detection area (13).

Description

Photochemical analysis test strip structure Technical Field The utility model relates to the technical field of body fluid analysis, in particular to a photochemical analysis test strip structure. Background The photochemical analysis test strip is a rapid diagnostic tool based on an optical detection principle, and the test strip is used for carrying out detection analysis by combining an optical detection instrument (such as a spectrophotometer and a fluorescence detector) through the reaction of a specific chemical reagent loaded on the test strip and a target object to generate color change, fluorescence or chemiluminescence signals. The Chinese patent application with the publication number of CN119574538A discloses a blood fat test card based on the photochemical principle, which comprises a card body, wherein a sample adding port, a correction area and at least one test area are arranged on the card body, the sample adding port is respectively communicated with the correction area and the test area, the correction area and the test area are respectively provided with air holes communicated with the outside, the correction area is provided with a reaction membrane and a hemolytic agent, the test area is provided with an enzyme layer and an interference removing membrane corresponding to an item to be detected, the card body comprises a bottom plate and an upper cover which can be attached together, the bottom plate is provided with a plurality of grooves which are correspondingly formed in the correction area and the test area, the cover plate is provided with a notch and a plurality of flow channels, the notch forms the sample adding port, one ends of the flow channels are respectively connected with the notch, and the other ends of the flow channels are respectively connected with the grooves. When the test card in the prior art is used, a sample flows into the test area through the sample adding port and the flow channel, and bubbles of the sample in the test area are not easy to discharge, so that the detection accuracy is affected. Accordingly, the prior art is still in need of improvement and development. Disclosure of utility model The utility model aims to overcome the defects and shortcomings of the prior art and provide a photochemical analysis test strip structure. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The utility model provides a photochemical analysis test strip structure, which comprises a test strip body, wherein a sample injection area, a sample injection runner and a reaction detection area which are sequentially communicated along the flowing direction of a sample are arranged in the test strip body, and a sample injection port which is communicated with the sample injection area is arranged on the test strip body; The bottom of the reaction detection area is provided with a hydrophobic layer, the hydrophobic layer is provided with a notch and a guide hole which are communicated in sequence along the flowing direction of a sample, and the guide hole and the reaction detection area are concentrically arranged; The test strip body is provided with a plurality of first air holes communicated with the edge area. It will be appreciated that the reagent may be attached within the detection center by a process such as freeze drying, screen printing deposition, or the like. Through the arrangement of the hydrophobic layer, the sample entering the reaction detection area is firstly filled in the detection center area and then is diffused to the edge area, the sample is guided to flow orderly, and the sample forces bubbles to migrate to the edge area in the flowing process and is discharged from the first air hole to the outside, so that the bubble interference of the detection center area is effectively eliminated, and the detection accuracy is improved. According to the above scheme, the plurality of first air holes are uniformly distributed above the edge area. According to the above scheme, the first air hole is arranged as a conical hole, and the side of the first air hole with smaller hole diameter faces the outside. Through the arrangement, the speed of discharging the gas out of the outside is improved. According to the scheme, the sample injection flow channel is arranged in a serpentine shape. The sample injection flow channel which is communicated with the sample injection area and the reaction detection area is arranged into a serpentine shape, and the continuous bending design of the serpentine shape can cause frequent change of the flowing direction of the sample entering the sample injection flow channel, so that the speed of the sample flowing into the reaction detection area is improved, and the mixing efficiency of the reagent and the sample is promoted. According to the above scheme, the outlet of the sample injection area is communicated with the first end of the sample injection flow channel, and the outlet