Reagent plate fastening device

Abstract

The utility model provides a reagent plate fastening device which comprises a card carrying groove and a base, the card carrying groove is formed in the base and provided with three side walls and a reagent plate inlet and outlet, and the tops of the two opposite side walls of the card carrying groove are provided with a plurality of check blocks extending inwards. A plurality of first ball plungers are arranged on the base, and the telescopic direction of the first ball plungers is perpendicular to the base; a plurality of second ball plungers are arranged on at least one side wall of the card carrying groove, and the telescopic direction of the second ball plungers is perpendicular to the inserting direction or the pulling-out direction of the reagent plate. The first ball plungers and the second ball plungers are used for providing counter-acting force respectively, continuous pressure is given to the reagent plate in the up-down direction and the left-right direction respectively, the reagent plate can be tightly attached to the inner wall of the card carrying groove, and shaking of the reagent plate is avoided; besides, after the reagent plate is placed in the card carrying groove, the ball head in the ball head plunger can roll, so that the friction force between the ball head plunger and the reagent plate is reduced, and the reagent plate is greatly convenient to insert and pull out.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and particularly relates to a reagent plate fastening device. Background Art

[0002] Dry fluorescence detection is a rapid medical detection technology that has emerged in recent years. This technology uses a dry fluorescence reagent plate as a carrier and combines the use of a measurement optical path, a barcode reader, and a test platform to perform rapid medical detection. It has the advantages of high sensitivity, strong selectivity, low sample volume requirement, and simple method, and is widely used in medical detection.

[0003] When performing fluorescence detection, the reagent plate (reagent card) needs to be inserted into the card-holding tongue (slot), and then fluorescence detection is carried out on it. Among them, whether the reagent plate can be well fixed is a necessary prerequisite for accurate detection results. Chinese Patent CN216771518U discloses a reagent card clamping device for a dry fluorescence immunoassay analyzer. The reagent card is limited and clamped left and right by the first elastic arms on both sides, and is limited and clamped up and down by the limit blocks and the second elastic arms. In fact, the limit and locking are achieved by means of tolerance fit. If the tolerance fit is tighter, it is more difficult to insert and remove, which is inconvenient to use. In addition, the first elastic arm and the second elastic arm themselves also rely on static friction on the plane to achieve clamping and positioning. After repeated use, deformation of the first elastic arm and the second elastic arm may occur, which will affect the use, easily cause inaccurate positioning, and make replacement and maintenance relatively difficult, which is not conducive to updating and maintenance. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a reagent plate fastening device, hoping to effectively solve the problems in the background art.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A reagent plate fastening device includes a card-holding slot and a base. The base is provided with a card-holding slot. The card-holding slot has three side walls and a reagent plate inlet and outlet. Multiple inwardly extending stoppers are provided at the tops of two opposite side walls of the card-holding slot. It is characterized in that:

[0007] A plurality of first ball plungers are provided on the base, and the telescopic direction of the first ball plungers is perpendicular to the base;

[0008] A plurality of second ball plungers are provided on at least one side wall of the card-holding slot, and the telescopic direction of the second ball plungers is perpendicular to the insertion direction or the extraction direction of the reagent plate.

[0009] While adopting the above technical solutions, the utility model can also adopt or combine the following technical solutions:

[0010] As a preferred technical solution of the present utility model: the side wall of the carrier card slot is bent to form a plurality of cavities, a boss is arranged in the cavity, and a second ball head plunger is accommodated in the boss.

[0011] As a preferred technical solution of the present utility model: the first ball head plunger is a flange type ball head plunger.

[0012] As a preferred technical solution of the present utility model: the second ball head plunger is a flange type ball head plunger.

[0013] As a preferred technical solution of the present utility model: the ball head plunger is a flange type ball head plunger.

[0014] As a preferred technical solution of the present utility model: the flange type ball head plunger includes a plunger, a ball head, and a spring; a spring is arranged in the plunger, the ball head is arranged on the spring, a part of the ball head exposes out of the plunger, and the top of the plunger is a plane.

[0015] As a preferred technical solution of the present utility model: an external thread is arranged on the outer side wall of the plunger.

[0016] As a preferred technical solution of the present utility model: the ball head is made of solid metal material.

[0017] As a preferred technical solution of the present utility model: the carrier card slot and the base are fixed by fixing screws

[0018] The present utility model provides a reagent plate fastening device, which has the following beneficial effects: by means of a plurality of first ball head plungers and second ball head plungers respectively providing reaction forces (elastic forces), continuous pressures are respectively given to the reagent plate in the up and down and left and right directions, so that the reagent plate can be tightly attached to the inner wall of the carrier card slot, avoiding the up and down and left and right shaking of the reagent plate; in addition, after the reagent plate is placed in the carrier card slot, the ball head plunger can provide a tightening force to the reagent plate, and at the same time, the ball head in the ball head plunger can roll, reducing the friction force between the ball head plunger and the reagent plate, greatly facilitating the insertion and extraction of the reagent plate; further, the ball head of the used ball head plunger is a solid metal ball head and will not deform even after frequent use; furthermore, the ball head plunger is fixed to the base by a thread, and the later maintenance is convenient and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the reagent plate fastening device provided by the present utility model;

[0020] Figure 2 is an exploded assembly diagram;

[0021] Figure 3 is a top view;

[0022] Figure 4 is the front view;

[0023] Figure 5 is the sectional view of the ball head plunger;

[0024] In the figure: 1 - carrier card slot; 2 - base; 3 - ball head plunger; 4 - fixing screw; 11 - stop block; 21 - boss; 31 - plunger; 32 - ball head; 33 - spring. Specific embodiments

[0025] The present utility model will be further described in detail with reference to the accompanying drawings and specific embodiments.

[0026] As Figures 1-4 shown, a reagent plate fastening device includes a carrier card slot 1 and a base 2. The base 2 is provided with the carrier card slot 1. The shape of the carrier card slot 1 is generally rectangular, open and hollow. The carrier card slot 1 has three side walls and a reagent plate inlet and outlet. A plurality of inwardly extending stop blocks 11 are provided at the tops of two opposite side walls of the carrier card slot 1. A plurality of first ball head plungers are provided on the base 2, and the telescopic direction of the first ball head plungers is perpendicular to the base 2. A plurality of second ball head plungers are provided on at least one side wall of the carrier card slot 1, and the telescopic direction of the second ball head plungers is perpendicular to the insertion direction or the extraction direction of the reagent plate. The carrier card slot 1 and the base 2 are fixed by fixing screws 4. The fixation of the reagent plate in the up and down direction is achieved through the cooperation of the plurality of first ball head plungers and the stop blocks 11, and the fixation of the reagent plate in the left and right direction is achieved through the cooperation of the second ball head plungers and the side walls.

[0027] Generally, the internal space size in the carrier card slot 1 is approximately the same as or slightly larger than the outer size of the reagent plate. The bottom wall and side walls in the carrier card slot 1 are all precision-machined planes. The ball head 32 of the ball head plunger 3 slightly protrudes from the planes of the bottom wall and side walls of the carrier card slot 1. The hollow area above the carrier card slot 1 is the detection area of the reagent plate.

[0028] The side wall of the carrier card slot 1 is bent to form a plurality of cavities, and bosses 21 are provided in the cavities to accommodate the second ball head plungers.

[0029] The lower end of the boss 21 is fixed to the base 2, and the base 2 is a precision-machined aluminum part or stainless steel part.

[0030] The first ball head plungers and the second ball head plungers are flange-type ball head plungers. The first ball head plungers and the second ball head plungers can be ball head plungers of different specifications. In this embodiment, the first ball head plungers and the second ball head plungers are ball head plungers 3 of the same specification.

[0031] In this embodiment, the ball head plunger 3 is installed in a round hole provided in the base 2, and an internal thread is provided in the round hole.

[0032] As Figure 5As shown in the figure, the flanged ball head plunger includes a plunger 31, a ball head 32, and a spring 33; a spring 33 is provided inside the plunger 31, a ball head 32 is provided on the spring 33, and a part of the ball head 32 protrudes from the plunger 31. The top of the plunger is a flat surface, which is convenient for the reagent plate to move in the carrier slot 1. The ball head 32 is made of solid metal, and an external thread matching the internal thread of the round hole of the base 2 is provided on the outer side wall of the plunger 31.

[0033] Under normal circumstances, the spring 33 is in a compressed state and continuously provides an elastic force acting on the ball head 32. The plunger 31 just accommodates a part of the ball head 32, so that it will not escape from the plunger 31. In this way, when an external force acts inward on the ball head 32, the spring 33 will continuously provide an outward elastic force to urge the ball head 32 to move outward, thus providing a reverse elastic pressing force.

[0034] The above specific embodiments are used to explain the present invention, which is only the preferred embodiment of the present invention, rather than a limitation on the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and protection scope of the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A reagent plate fastening device, comprising a card loading slot (1) and a base (2), wherein the base (2) is provided with a card loading slot (1), the card loading slot (1) having three side walls and a reagent plate inlet and outlet, and the tops of two opposite side walls of the card loading slot (1) are provided with a plurality of inwardly extending stoppers (11), characterized in that: The base (2) is provided with a plurality of first ball plungers, and the extension and retraction directions of the first ball plungers are perpendicular to the base (2); A plurality of second ball-end plungers are provided on at least one side wall of the card-carrying slot (1), and the extension and retraction directions of the second ball-end plungers are perpendicular to the insertion direction or the extraction direction of the reagent plate.

2. The reagent plate fastening device according to claim 1, characterized in that: The side wall of the card loading slot (1) is bent to form a plurality of cavities, wherein a boss (21) is provided in the cavity, and a second ball plunger is accommodated in the boss (21).

3. The reagent plate fastening device according to claim 2, characterized in that: The lower end of the boss (21) is fixed to the base (2).

4. The reagent plate fastening device according to claim 1, characterized in that: The first ball plunger is a flange type ball plunger.

5. The reagent plate fastening device according to claim 1, characterized in that: The second ball plunger is a flange type ball plunger.

6. The reagent plate fastening device according to claim 4 or 5, characterized in that: The flange type ball head plunger comprises a plunger (31), a ball head (32) and a spring (33); the plunger (31) is provided with a spring (33), the spring (33) is provided with a ball head (32), a portion of the ball head (32) is exposed from the plunger (31), and the top of the plunger is a plane.

7. The reagent plate fastening device according to claim 6, characterized in that: The outer side wall of the plunger (31) is provided with an external thread.

8. The reagent plate fastening device according to claim 6, characterized in that: The ball head (32) is made of solid metal.

9. The reagent plate fastening device according to claim 1, characterized in that: The card loading slot (1) and the base (2) are fixed via fixing screws (4).

10. The reagent plate fastening device according to claim 1, characterized in that: The base (2) is a precision-machined aluminum part or a stainless steel part.

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