Disc positioning and fixing mechanism for microfluidic POCT biochemical analyzer

Abstract

The utility model relates to the technical field of disc positioning mechanisms, in particular to a disc positioning and fixing mechanism for a microfluidic POCT (Point of Care Testing) biochemical analyzer, which comprises a tray, a disc, a bracket, a spring and a bolt, the bottom of the support penetrates through a hole in the middle of the disc and is connected with the tray. A plurality of slideways are uniformly arranged in the circumferential direction of the bracket, and bolts are slidably connected in the slideways through springs; and one end of the bolt is inserted into a slot in the middle of the disc to apply downward pressure to the disc. The support is connected with the tray, the position of the sliding way in the vertical height is limited, downward pressure is applied to the disc through the plug pin and the spring, the disc is made to be tightly attached to the top face of the tray, then the inclination problem caused by disc installation errors is avoided, and the installation process is simple, convenient and fast.

Description

Technical Field

[0001] This utility model relates to the technical field of disc positioning mechanisms, specifically to a disc positioning and fixing mechanism for a microfluidic POCT biochemical analyzer. Background Technology

[0002] Technological advancements have made point-of-care testing (POCT) increasingly less restricted by location or operator expertise; its applications have expanded beyond bedside care to include home healthcare, mobile medicine, field settings, battlefield medicaments, and even back into central laboratory settings. Especially with the continuous maturation of precise quantitative POCT testing systems, particularly the development of microfluidic technology, the use of POCT in laboratory settings is gradually becoming a reality. Therefore, modern POCT has become synonymous with "on-site," "fast," and "convenient." Simultaneously, while ensuring accurate test results, smaller size has become a development trend for POCT.

[0003] Due to factors such as a lack of professional expertise and training among many POCT users, discs are prone to misplacement and tilting, leading to inaccurate measurement results. Even with natural disc placement, improper placement can result in inaccurate measurements. Furthermore, since this microfluidic test involves tray rotation, improper placement could pose a risk of rotational friction and noise. Improper disc placement also leads to inaccurate clip positioning. According to Beer-Lambert's law, inaccurate clip positioning will affect two parameters: transmittance and absorber layer thickness, directly impacting the test results. Utility Model Content

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide a disc positioning and fixing mechanism for a microfluidic POCT biochemical analyzer, in order to solve the problem that in the prior art, due to factors such as the lack of professionalism and training of most POCT users, the disc is prone to tilting, resulting in inaccurate measurement results.

[0005] A disc positioning and fixing mechanism for a microfluidic POCT biochemical analyzer includes a tray, a disc, a support, a spring, and a pin.

[0006] The top of the tray is used to place the disc, and the bottom of the support passes through the hole in the middle of the disc and is connected to the tray. Several slides are evenly arranged around the circumference of the support, and pins are slidably connected in the slides by springs. One end of the pin is inserted into the slot in the middle of the disc to apply downward pressure to the disc.

[0007] Furthermore, the slot is annular.

[0008] Furthermore, the slot is located in the hole wall in the middle of the disk.

[0009] Furthermore, the end of the slide near the disc is inclined downwards.

[0010] Furthermore, a limiting part is provided on the top circumferential direction of the tray, and a limiting protrusion is provided on the side of the limiting part near the disc, and a limiting groove is provided on the circumferential direction of the disc to match the limiting protrusion.

[0011] Furthermore, the end of the pin that is inserted into the slot has an arc surface.

[0012] Furthermore, the bracket is provided with a plurality of vertically extending second positioning holes, which are located between two adjacent slides, and the bracket is provided with a first positioning hole at the corresponding position; the first positioning hole and the second positioning hole are used to place bolts.

[0013] Beneficial effects: By connecting the bracket to the tray, the vertical position of the slide is restricted. The pin and spring apply downward pressure to the disc, making the disc stick tightly to the top surface of the tray, thus avoiding tilting problems caused by disc installation errors. The installation process is simple, convenient and quick. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 The front view;

[0017] Figure 3 This is a bottom view of an embodiment of the present utility model.

[0018] Figure 4 for Figure 2 A sectional view;

[0019] Figure 5 This is a schematic diagram of the disk structure according to an embodiment of the present utility model;

[0020] Figure 6 This is a schematic diagram of the support structure according to an embodiment of the present utility model;

[0021] Figure 7 for Figure 6 The front view;

[0022] Figure 8 for Figure 7 A sectional view.

[0023] In the figure: 1. Tray; 101. Limiting part; 102. Limiting protrusion; 103. First positioning hole; 2. Disc; 201. Limiting groove; 202. Slot; 3. Bracket; 301. Slide; 302. Second positioning hole; 4. Spring; 5. Pin. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] It should be noted that the embodiments and features involved in the embodiments of this utility model can be combined with each other without conflict. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] like Figures 1-8 The disc positioning and fixing mechanism for a microfluidic POCT biochemical analyzer shown includes a tray 1, a disc 2, a bracket 3, a spring 4, and a pin 5.

[0027] A disc 2 is placed on top of a tray 1, and a support 3 is connected to the tray 1 by passing through a hole in the middle of the disc 2 at its bottom. The support 3 has several evenly spaced slides 301, and pins 5 are slidably connected within each slide 301. One end of the pin 5 is fitted with a spring 4 installed within the slide 301, and the other end of the pin 5 is inserted into an annular slot 202 located on the wall of the hole in the middle of the disc 2, for applying downward pressure to the disc 2. The end of the pin 5 near the disc 2 is curved to facilitate sliding inwards into the slide 301 after contact with the upper edge of the slot 202.

[0028] In this embodiment, by connecting the bracket 3 to the tray 1, the position of the slide 301 in the vertical height is restricted. The pin 5 applies downward pressure to the disc 2, so that the disc 2 is in close contact with the top surface of the tray 1, thereby avoiding the tilting problem caused by the installation error of the disc 2. The installation process is simple, convenient and quick.

[0029] The bottom end of bracket 3 is threadedly connected to tray 1.

[0030] In this embodiment, the connection between the bracket 3 and the tray 1 is convenient, quick, and easy to install and disassemble. The specific threaded connection between the bottom of the bracket 3 and the tray 1 is existing technology and will not be elaborated upon here.

[0031] The slide 301 is inclined downward at the end near the disc 2.

[0032] In this embodiment, the slide 301 is a downwardly inclined oblique hole, which facilitates the pin 5 to apply downward pressure. The spring 4 is installed inside the slide 301, with one end connected to the inside of the slide 301 and the other end sleeved on the pin 5. The spring 4 is used to provide a downward elastic force to the pin 5 through compression, and also to prevent the pin 5 from sliding out of the slide.

[0033] The bracket 3 is evenly provided with a number of vertically arranged second positioning holes 302. The second positioning holes 302 are located between two adjacent slides 301. The tray 1 is provided with a second positioning hole 302 corresponding to the first positioning hole 103.

[0034] In this embodiment, the first positioning hole 103 and the second positioning hole 302 are used for the installation of bolts and other existing connectors, for further fastening between the tray 1 and the spring 4, or for the installation of other existing components.

[0035] The top of the tray 1 is evenly provided with a number of limiting parts 101. The limiting part 101 is provided with a limiting protrusion 102 on the side near the plate 2. The plate 2 is provided with a limiting groove 201 that is adapted to the limiting protrusion 102 and is used for the insertion of the limiting protrusion 102.

[0036] In this embodiment, the limiting protrusion 102 and the limiting groove 201 are provided to limit the disk 2 and prevent the disk 2 from rotating relative to the tray 1.

[0037] Working principle: The disc 2 is placed on the tray 1, and the limiting protrusion 102 is inserted into the limiting groove 201; the bottom end of the bracket 3 passes through the hole in the middle of the disc 2 and is threadedly connected to the tray 1; as the bracket 3 moves downward, the end of the pin 5 near the disc 2 is pressed, and the pin 5 slides into the slide rail 301, and then the bracket 3 continues to move downward; when it reaches the slot 202, the pin 5 slides out of the slide rail 301, and one end of the pin 5 is inserted into the slot 202. The slot 202 exerts downward pressure on the disc 2, so that the bottom surface of the disc 2 is close to the top surface of the tray 1. The disc 2 is close to the top surface of the horizontally set tray 1, which can prevent the disc 2 from tilting.

[0038] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if such modifications and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include such modifications and modifications.

Claims

1. A disk positioning and fixing mechanism for a microfluidic POCT biochemical analyzer, characterized in that, Includes tray, plate, bracket, spring and pin; The top of the tray is used to place the disc, and the bottom of the support passes through the hole in the middle of the disc and is connected to the tray. Several slides are evenly arranged around the circumference of the support, and pins are slidably connected in the slides by springs. One end of the pin is inserted into the slot in the middle of the disc to apply downward pressure to the disc.

2. The disk positioning and fixing mechanism for a microfluidic POCT biochemical analyzer according to claim 1, characterized in that, The slot is ring-shaped.

3. The disk positioning and fixing mechanism for a microfluidic POCT biochemical analyzer according to claim 2, characterized in that, The slot is located in the hole wall in the middle of the disk.

4. The disk positioning and fixing mechanism for a microfluidic POCT biochemical analyzer according to claim 1, characterized in that, The slide rail slopes downwards at the end closest to the disc.

5. The disk positioning and fixing mechanism for a microfluidic POCT biochemical analyzer according to claim 1, characterized in that, The tray has a limiting part on its top circumferentially, a limiting protrusion on the side of the limiting part near the disc, and a limiting groove on the disc circumferentially that matches the limiting protrusion.

6. The disk positioning and fixing mechanism for a microfluidic POCT biochemical analyzer according to claim 1, characterized in that, The end of the pin that is inserted into the slot has an arc surface.

7. The disk positioning and fixing mechanism for a microfluidic POCT biochemical analyzer according to claim 1, characterized in that, The bracket is provided with several vertically extending second positioning holes, which are located between two adjacent slides. The bracket is provided with a first positioning hole at the corresponding position. The first positioning hole and the second positioning hole are used to place bolts.

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