Analysis device based on microfluidic technology

Abstract

The utility model provides an analysis device based on microfluidic technology, which comprises a microfluidic disk and a driving unit, the driving unit comprises a motor and a rotating disk driven by the motor, the rotating disk is provided with a rotating shaft allowing the central hole of the microfluidic disk to be clamped in; the extension part surrounds the rotating shaft and extends along the direction parallel to the central axis of the rotating shaft; one end of the extension part is connected with the outer edge of the rotating disc, and the other end is open; the inner side of the first fixing piece is clamped in a first groove in the outer wall of the rotating shaft, and the outer side of the first fixing piece is clamped in a second groove in the side wall of the central through hole; the outer side of the first fixing piece is inclined, and the outer side is gradually away from the opening from inside to outside; and the micro-fluidic chip is clamped between the first fixing piece and the extension part. The utility model has the advantages of firm fixation, good safety, simple structure and the like.

Description

Technical Field

[0001] This utility model relates to microfluidics technology, and in particular to an analysis device based on microfluidics technology. Background Technology

[0002] Existing butterfly / disc microfluidic chips all have a potential problem: due to variations in shape and size, the chips are prone to unstable fixation in the instrument tray, leading to loosening or ejection during instrument operation. While some fixation structures can effectively secure the chips, their inflexibility makes it difficult to remove them from the tray or to use a robotic arm to remove them from the tray holder. Summary of the Invention

[0003] To address the shortcomings of the existing technical solutions, this utility model provides an analysis device based on microfluidic technology.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] The microfluidic analysis device includes a microfluidic disk and a drive unit. The drive unit includes a motor and a rotating disk driven by the motor. The rotating disk has a shaft that allows the microfluidic disk to engage with a central through-hole. The microfluidic analysis device also includes:

[0006] An extension portion surrounds the rotating shaft and extends along a direction parallel to the central axis of the rotating shaft; one end of the extension portion is connected to the outer edge of the rotating disk, and the other end is open;

[0007] The first fixing member has its inner side engaged in a first groove on the outer wall of the rotating shaft, and its outer side engaged in a second groove on the side wall of the central through hole; the outer side of the first fixing member is inclined, gradually moving away from the opening from the inside out; the microfluidic disk is engaged between the first fixing member and the extension.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] By utilizing the inclined design of the first fixing member and its end, as well as the design of the extension, the microfluidic disk is clamped between the first fixing member and the extension, preventing the microfluidic disk from moving towards the opening of the extension during rotation, thus preventing the disk from flying out, improving the stability of the disk fixation, and also improving safety performance.

[0010] The inclined design of the second fixing component and its end better secures the microfluidic disk and prevents it from flying off during rotation;

[0011] The notch design on the radial outer edge of the rotating disk allows operators to easily remove the microfluidic disk plate that is clamped between the first fixing member and the extension. Attached Figure Description

[0012] The disclosure of this utility model will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are merely illustrative of the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. In the drawings:

[0013] Figure 1 This is a simplified structural diagram of the analysis device based on microfluidic technology according to this utility model;

[0014] Figure 2 This is a simplified cross-sectional view of the analysis device based on microfluidic technology according to this utility model;

[0015] Figure 3 This is a simplified cross-sectional view of the first fixing member of this utility model;

[0016] Figure 4 This is a simplified cross-sectional view of the second fastener of this utility model;

[0017] Figure 5 This is a simplified structural diagram of the analysis device based on microfluidic technology according to this utility model. Detailed Implementation

[0018] Figures 1-5 The following description illustrates optional embodiments of the present invention to teach those skilled in the art how to implement and reproduce it. For the purpose of teaching the technical solutions of the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art should understand that variations or substitutions derived from these embodiments will be within the scope of the present invention. Those skilled in the art should understand that the following features can be combined in various ways to form multiple variations of the present invention. Therefore, the present invention is not limited to the following optional embodiments, but is defined only by the claims and their equivalents.

[0019] Example 1

[0020] The microfluidic analysis device of this utility model embodiment, such as Figure 1 As shown, it includes:

[0021] The drive unit includes a motor and a rotating disk 11 driven by the motor, the rotating disk 11 having a shaft 13 that allows the microfluidic disk to be inserted into a central through-hole.

[0022] The extension 12 surrounds the rotating shaft 13 and extends along a direction parallel to the central axis of the rotating shaft 13; one end of the extension 12 is connected to the outer edge of the rotating disk 11, and the other end is open.

[0023] like Figure 2 As shown, the inner side of the first fixing member 21 is engaged in the first groove on the outer wall of the rotating shaft 13, and the outer side is engaged in the second groove on the side wall of the central through hole.

[0024] like Figure 3 As shown, the outer side of the first fixing member 21 is inclined, and from the inside out, the outer side gradually moves away from the opening; the microfluidic disk is held between the first fixing member 21 and the extension 12.

[0025] To better secure the microfluidic disk, the analytical apparatus further includes:

[0026] The outer side of the second fastener 22 is engaged in the third groove on the inner wall of the extension 12, and the inner side is engaged in the fourth groove on the radial outer edge of the microfluidic disk.

[0027] like Figure 4 As shown, the inner side of the second fixing member 22 is inclined, and from the outside to the inside, the inner side of the second fixing member 22 gradually moves away from the opening.

[0028] To secure the microfluidic disk, the inner wall of the extension 12 has multiple protrusions, the extension direction of which is parallel to the central axis of the rotating shaft 13; the third groove is disposed on the protrusions, the radial outer edge of the microfluidic disk has a notch that allows the protrusions to engage, and the fourth groove is disposed within the notch.

[0029] To facilitate the removal of the microfluidic disk plate stuck between the first fixing member 21 and the extension 12, further, as... Figure 5 As shown, the rotating disk 11 has a notch 14 in the radial direction, and the extensions 12 are discontinuously distributed.

[0030] To facilitate insertion and release from the groove of the microfluidic disk, the outer side of the first fixing member 21 is a convex arc surface, and the inner side of the second fixing member 22 is a convex arc surface.

[0031] Example 2

[0032] According to Embodiment 1 of this utility model, the application example of the microfluidic analysis device in biochemical analysis.

[0033] In this application example, such as Figure 2 , Figure 5 As shown, the rotating shaft 13 of the rotating disk 11 is cylindrical, with an annular first groove on its outer wall. The annular first fixing member 21 is made of rubber and is inserted into the first groove on its inner side. There are four notches 14 on the radial outer edge.

[0034] like Figure 2 As shown, the inner side of the first fixing member 21 is engaged in the first groove on the outer wall of the rotating shaft 13, and the outer side is engaged in the second annular groove on the side wall of the central through hole.

[0035] like Figure 3 As shown, the outer side of the first fixing member 21 is a convex arc surface and is inclined. From the inside to the outside, the end of the outer side gradually moves away from the opening; the microfluidic disk is stuck between the first fixing member 21 and the extension 12.

[0036] like Figure 2 , Figure 5 As shown, the extension 12 surrounds the rotating shaft 13 and extends along a central axis parallel to the rotating shaft 13, with one end connected to the outer edge of the rotating disk 11 and the other end open. Corresponding to the notch 14 of the rotating disk 11, the extension 12 is discontinuously distributed, and the discontinuously distributed extension 12 has a cylindrical structure. The inner wall of the extension 12 has a third groove. The outer side of the second fixing member 22 is engaged in the third groove.

[0037] like Figure 4 As shown, the inner side of the second fixing member 22 is an inwardly convex arc surface and is inclined. From the outside to the inside, the inner side of the second fixing member 22 gradually moves away from the opening.

[0038] The microfluidic disk has a central through-hole, with an annular second groove on the sidewall of the central through-hole and an annular fourth groove on the outer wall. The outer side of the first fixing member 21 is engaged in the second groove, and the inner side of the second fixing member 22 is engaged in the fourth groove.

[0039] The analysis device in this embodiment operates as follows:

[0040] When microfluidic disks need to be installed, the operator places the disk on the upper side of the rotating disk 11, with the rotating shaft 13 passing through the central through hole of the disk.

[0041] Press the disc downwards so that the outer side of the first fixing member 21 is engaged in the second groove, and at the same time, the inner side of the second fixing member 22 is engaged in the fourth groove, thereby firmly securing the disc between the first fixing member 21 and the second fixing member 22.

[0042] When the rotating disk rotates, the inclined design of the ends of the first fixing member 21 and the second fixing member 22 hooks the disk and prevents the disk from moving toward the opening.

[0043] When it is necessary to remove the disc, the operator places their fingers on the underside of the disc at the notch 14 and pushes the disc upward, causing the first fixing member 21 to disengage from the second groove and the second fixing member 22 to disengage from the fourth groove, thereby removing the disc.

[0044] Example 3

[0045] The application example of the microfluidic-based analytical device in biochemical analysis in Embodiment 1 of this utility model differs from Embodiment 2 in that:

[0046] 1. The inner wall of the extension has multiple cylindrical protrusions, the extension direction of which is parallel to the central axis of the rotating shaft. A third groove is provided on the protrusions, and the radial outer edge of the microfluidic disk has a notch that allows the protrusions to engage, the inner wall of which is provided with a fourth groove.

[0047] 2. The rotating disc is hollowed out.

Claims

1. An analytical device based on microfluidic technology, comprising a microfluidic disk and a driving unit, wherein the driving unit includes a motor and a rotating disk driven by the motor, the rotating disk having a shaft that allows the microfluidic disk to engage with a central through-hole; characterized in that, The microfluidic-based analysis device also includes: An extension portion surrounds the rotating shaft and extends along a direction parallel to the central axis of the rotating shaft; one end of the extension portion is connected to the outer edge of the rotating disk, and the other end is open; The first fixing member has its inner side engaged in a first groove on the outer wall of the rotating shaft, and its outer side engaged in a second groove on the side wall of the central through hole; the outer side of the first fixing member is inclined, gradually moving away from the opening from the inside out; the microfluidic disk is engaged between the first fixing member and the extension.

2. The analysis device based on microfluidic technology according to claim 1, characterized in that, The analytical apparatus further includes: The second fixing member has its outer side engaged in the third groove on the inner wall of the extension, and its inner side engaged in the fourth groove on the radial outer edge of the microfluidic disk; the inner side of the second fixing member is inclined, and from the outside to the inside, the inner side of the second fixing member gradually moves away from the opening.

3. The microfluidic-based analytical device according to claim 2, characterized in that, The inner wall of the extension has multiple protrusions, the extension direction of which is parallel to the central axis of the rotating shaft; the third groove is disposed on the protrusion, the radial outer edge of the microfluidic disk has a notch that allows the protrusion to be inserted, and the fourth groove is disposed within the notch.

4. The analysis device based on microfluidic technology according to claim 1, characterized in that, The rotating disk has radial notches, and the extensions are discontinuously distributed.

5. The analysis device based on microfluidic technology according to claim 2, characterized in that, The outer side of the first fastener is a convex arc surface, and the inner side of the second fastener is a convex arc surface.

6. The analysis device based on microfluidic technology according to claim 1, characterized in that, The first groove is distributed continuously or intermittently.

7. The microfluidic-based analytical device according to claim 1 or 6, characterized in that, The rotating disk is hollowed out.

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