An analysis sheet

By designing a double-layer slide structure, the problems of unevenness and impurity interference in the liquid drop and observation process of traditional slides are solved, enabling rapid drop, filtration and uniform storage of liquid samples, and improving the clarity of microscopic observation and the accuracy of analysis.

CN224519034UActive Publication Date: 2026-07-17安缔澜生物医学科技(上海)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
安缔澜生物医学科技(上海)有限公司
Filing Date
2025-07-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional glass slides make it difficult to precisely control the position and flow range of liquid droplets, resulting in uneven liquid diffusion, impurities interfering with observation, and poor air expulsion causing air bubbles that interfere with microscope observation.

Method used

The system employs a double-layer glass slide structure. The first glass slide has a dropper hole and a vent hole, while the second glass slide has a liquid storage groove. After liquid is dripped into the dropper hole, large particles are filtered in the liquid passage chamber to form a uniform thin layer, and air is discharged through the vent hole.

Benefits of technology

It enables rapid loading, filtration, and uniform storage of liquid samples, improving the clarity of microscopic observation and the accuracy of analytical results, while avoiding bubble interference.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224519034U_ABST
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Abstract

The utility model relates to an analysis piece belongs to biological sample analysis technical field. The analysis piece solves the problem of inconvenient liquid control of traditional glass slide, unable to filter impurities, easy to produce air bubble. The scheme includes first glass slide and second glass slide: first glass slide is equipped with drop hole, vent hole and observation window (comprise first subsidence part and second subsidence part), second glass slide is equipped with liquid storage groove. When two layers are pasted, first subsidence part and liquid storage groove form the first liquid passage cavity with small width for filtering large particle, second subsidence part forms the second liquid passage cavity with large width for liquid flat storage, vent hole is located away from drop hole one end, is used for discharging air to avoid air bubble. When using, liquid is dropped from drop hole, and after filtering through first liquid passage cavity, it flows into second liquid passage cavity and is evenly flat, forms the thin layer suitable for microscope observation. The analysis piece simplifies the operation, improves the observation accuracy, and is suitable for biological sample analysis.
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Claims

1. An assay sheet, characterized by, include: A first glass slide (1) and a second glass slide (2). The first glass slide (1) has two through-holes (3) on its top, and the second glass slide (2) has two liquid storage grooves (8) on its top. The first glass slide (1) is placed close to the top of the second glass slide (2), and the two drop holes (3) correspond to the two liquid storage grooves (8) respectively. An observation window (4) is opened inside the first glass slide (1). The observation window (4) is composed of a first recessed part (5) and a second recessed part (6). When the first glass slide (1) is close to the second glass slide (2), the first recessed part (5) and the liquid storage groove (8) form a first liquid passage cavity (9), and the second recessed part (6) and the liquid storage groove (8) form a second liquid passage cavity (10). The first liquid passage cavity (9) and the second liquid passage cavity (10) are connected and cooperate with the drip hole (3). Vent holes (7) are opened on the top of the first glass slide (1). The two vent holes (7) are located at the end of the first glass slide (1) away from the drop hole (3) and are respectively opposite to the liquid storage groove (8). The liquid to be analyzed is dripped into the storage groove (8) through the dripping hole (3) and flows through the first liquid passage (9) and the second liquid passage (10) in sequence. The liquid passage width of the first liquid passage (9) is smaller than that of the second liquid passage (10) to filter large particles. The vent hole (7) is used to discharge air and avoid bubbles.

2. The assay sheet according to claim 1, wherein The distance between the bottom of the first sinking part (5) and the bottom inner wall of the liquid storage groove (8) is less than the distance between the bottom of the second sinking part (6) and the bottom inner wall of the liquid storage groove (8), so that the liquid passage width of the first liquid passage cavity (9) is less than that of the second liquid passage cavity (10), which is used to block large particles when liquid flows in.

3. The assay sheet of claim 1, wherein The first slide (1) is made of a transparent material, and the liquid reservoir (8) of the second slide (2) is made of a transparent material so that light can pass through for microscopic observation.

4. The assay sheet of claim 1, wherein The length of the liquid storage groove (8) is 45-56 mm and the depth is 0.08-0.12 mm.

5. The assay sheet of claim 1, wherein The bottom of the first recessed part (5) is flush with the bottom of the first glass slide (1), and the bottom of the second recessed part (6) is 0.28-0.32 mm higher than the bottom of the first glass slide (1).

6. The assay sheet of claim 1, wherein The width of the first recessed portion (5) and the second recessed portion (6) is the same, which is 15-17mm.

7. The assay sheet of claim 1, wherein Both of the vent holes (7) are arc-shaped with a radius of 3-3.5 mm.

8. The analytical tablet according to claim 2, characterized in that, The liquid passage width of the first liquid passage chamber (9) is smaller than that of the second liquid passage chamber (10), which is used to slow down the liquid flow rate to achieve flat storage.