reagent box

Abstract

This invention provides a reagent cartridge, including a microfluidic assembly and a liquid injection body. The microfluidic assembly has an elongated substrate element with spaced-apart fluid channels extending from the top to the bottom of the substrate element. The substrate element has first and second engaging structures at both ends, allowing multiple substrate elements to be connected in a vertical direction to form an elongated structure. The liquid injection body is elongated and has a plurality of liquid injection through-grooves extending from the top to the bottom, with the top opening larger than the bottom opening. The liquid injection body has third and fourth engaging structures at both ends. By selectively engaging the third with the first or the second with the fourth engaging structure, the liquid injection body and the microfluidic assembly can be assembled vertically, thereby providing excellent assembly flexibility.

Claims

1. A reagent cartridge comprising: at least one microfluidic assembly including at least one substrate element, the substrate element being an elongated structure and having a plurality of spaced-apart fluid channels extending from the top side to the bottom side of the substrate element; the substrate element having a first end and a second end disposed opposite to each other, the first end having a first engaging structure and the second end having a second engaging structure; and at least one injection body for perpendicular assembly with the substrate element of the microfluidic assembly, the injection body being an elongated structure and having a plurality of injection through grooves extending from the top side to the bottom side of the injection body, the top opening of the injection through grooves being larger than the bottom opening; the injection body having a third end and a fourth end disposed opposite to each other, the third end having a third engaging structure and the fourth end having a fourth engaging structure; wherein... The first and second locking structures are engaged and fixed to each other from the top and bottom, so that multiple base components are connected in series to form a long strip; the injection body and the microchannel assembly are vertically assembled by engaging and fixing each other from the top and bottom through the third and first locking structures or by engaging and fixing each other from the top and bottom through the second and fourth locking structures.

2. The reagent box as described in claim 1, wherein, The first engaging structure includes a first baffle and a first recess. The first recess is formed by the indentation of the end face of the first end toward the second end and penetrates the bottom surface of the base element to form a notch on the bottom surface of the base element. The first baffle is connected to the end face of the first end and partially covers the first recess, thus forming a first engaging gap with the first recess.

3. The reagent box as described in claim 1, wherein, The second engaging structure includes a second baffle and a second recess. The second recess is formed by recessing the end face of the second end toward the first end. The second baffle is formed by extending upward from the bottom surface of the base element and partially covering the second recess, thus clamping the second recess to form a second engaging gap.

4. The reagent box as described in claim 1, wherein, The base element has a horizontal rib and a plurality of vertical ribs. The vertical ribs are spaced apart and are respectively perpendicularly staggered with the horizontal rib. The fluid channels are respectively opened at the intersection of the vertical ribs and the horizontal rib, and the two end faces of the horizontal rib are the first end and the second end, respectively.

5. The reagent cartridge as described in claim 4, wherein, The base element has a top plate and a bottom plate arranged opposite to each other. The top ends of the horizontal ribs and the vertical ribs are connected to the top plate, and the bottom ends of the horizontal ribs and the vertical ribs are connected to the bottom plate. The width of the top plate and the bottom plate is the same as the length of the vertical ribs, and the length of the top plate and the bottom plate is the same as the length of the horizontal ribs.

6. The reagent box as described in claim 1, wherein, The third locking structure includes a first base and a third recess. The third recess is located at the connection between the end face of the third end and the rear side of the injection body. The first base is connected to the end face of the third end and has a locking groove. The locking groove communicates with the third recess to form a third locking gap.

7. The reagent box as described in claim 6, wherein, The first base protrudes from the rear side of the injection body. The first base has a first vertical section, a second vertical section, and a horizontal section. The first vertical section and the second vertical section are arranged opposite to each other. The height of the first vertical section is greater than that of the second vertical section. The first vertical section is connected to the end face of the third end. The horizontal section is connected between the first vertical section and the second vertical section. The first vertical section, the second vertical section, and the horizontal section are sandwiched to form the slot.

8. The reagent box as described in claim 1, wherein, The fourth engaging structure includes a second base, which is connected to the end face of the fourth end and has a through hole.

9. The reagent box as described in claim 8, wherein, The second base protrudes from the rear side of the injection body, and the bottom side of the second base has an inverted L-shaped notch.

10. The reagent box as described in claim 1, wherein, These liquid injection channels are eccentric funnel-shaped structures.

11. The reagent cartridge as described in claim 10, wherein, The injection body has a plurality of support ribs, which are arranged at intervals, and the bottom surfaces of the support ribs are coplanar with the bottom surface of the injection body.

12. The reagent cartridge as described in claim 11, wherein, The top side of the support ribs has a recess for connecting with the outer surface of the liquid injection through grooves.

13. The reagent box as described in claim 1, wherein, The number of microchannel components and the number of injection bodies are two, and the microchannel components include two or more of the substrate elements. The microchannel components and the injection bodies are assembled to form a rectangular frame structure.

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