Stirring structure and biochemical analyzer

Abstract

The utility model discloses a stirring structure and a biochemical analyzer, and relates to the technical field of biochemical analyzers. The device comprises a circular plate, the top of which is provided with a connecting column; and the sleeve is arranged on the peripheral side of the connecting column in a sleeving mode and fixedly connected with the circular plate, and a mounting plate is arranged at the top of the sleeve and is parallel to the circular plate. By adopting the design of the mounting plate, after the sampling needle is inserted into the container, the ultrasonic generator works, the mounting plate vibrates, and vibration force can be transmitted to the sampling needle connected with the mounting plate, so that the sampling end, inserted into the container, of the mounting plate can vibrate, a sample and a reagent in the sampling needle can be vibrated and stirred, and after stirring is completed, the sample and the reagent are separated from each other. The sampling needle can directly sample the uniformly mixed solution, the stirring step and the sampling step are combined, so that cross contamination between samples is not easy to occur, and compared with the prior art, the device structure is optimized, and the full-automatic biochemical analyzer is simple in structure and convenient for daily maintenance.

Description

Technical Field

[0001] The present application relates to the technical field of biochemical analyzers, and in particular to a stirring structure and a biochemical analyzer. Background Art

[0002] Currently, in the application of medical diagnostic instruments, in vitro diagnosis is one of the most common diagnostic methods in the medical field, especially the fully automatic biochemical analyzer. The fully automatic biochemical analyzer requires a sampling needle to draw experimental reagents or samples for fully automatic sampling, and then uses a stirring device to fully mix the samples and reagents in the container to improve the accuracy of subsequent test results.

[0003] The stirring device used in the fully automatic biochemical analyzer is mostly composed of a stirring motor and a plurality of stirring needles connected by transmission. When the stirring device moves downward, the plurality of stirring needles can be respectively inserted into a plurality of containers, and the plurality of stirring needles are driven by the stirring motor to rotate, so as to mix the samples and reagents in the containers. Such a design is prone to cross contamination, so a mechanism for cleaning it needs to be provided, which results in a large number of device structures, which are too bloated and inconvenient to maintain. In order to reasonably improve this problem, the present application proposes a stirring structure and a biochemical analyzer. Summary of the invention

[0004] The purpose of the present application is to solve the technical problem that the stirring device for a fully automatic biochemical analyzer is mostly composed of a stirring motor and a plurality of stirring needles connected by a transmission. When the stirring device moves downward, the plurality of stirring needles can be respectively inserted into a plurality of containers, and the plurality of stirring needles are driven by the stirring motor to rotate, so as to mix the samples and reagents in the containers. Such a design is prone to cross contamination, so a mechanism for cleaning it needs to be provided, which leads to a large number of device structures, being too bloated and inconvenient to maintain. The present application provides a stirring structure and a biochemical analyzer.

[0005] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0006] A stirring structure, comprising:

[0007] A circular plate with a connecting column constructed on the top;

[0008] A sleeve, which is sleeved on the circumferential side of the connecting column and fixedly connected to the circular plate, a mounting plate is constructed on the top of the sleeve, and the mounting plate is parallel to the circular plate;

[0009] An ultrasonic generator is mounted on the bottom of the mounting plate through a mounting piece;

[0010] A through hole is provided on the circular plate and is arranged in a circular array along the axis of the circular plate;

[0011] The sampling needle has the same number as the through holes, and has a mounting end and a sampling end. The mounting end passes through the through holes from bottom to top and is movably connected to the bottom of the mounting plate, and the outer diameter of the sampling end is smaller than the outer diameter of the mounting end.

[0012] Furthermore, both side openings of the through hole are constructed with arcuate surfaces, and the ends of the arcuate surfaces located inside the through hole are connected to each other.

[0013] Furthermore, the sampling needle is provided with a spherical block located at the top of the mounting end, the mounting plate is provided with a ball seat at the bottom, the number of which is the same as the sampling needle, and the spherical block is spherically hinged to the ball seat.

[0014] Furthermore, a buffer sleeve is provided on the outer side of the connecting column, which contacts the inner side of the sleeve, and a buffer pad is constructed on the peripheral side of the bottom of the buffer sleeve, which contacts the bottom of the sleeve.

[0015] Furthermore, the sleeve is detachably connected to the circular plate.

[0016] Furthermore, an annular plate is constructed at the bottom of the sleeve, which contacts the top of the buffer pad, and the annular plate is connected to the circular plate through flange bolts.

[0017] Furthermore, the mounting member includes a plurality of fixing bolts, all of which pass through the top of the mounting plate and cooperate with the ultrasonic generator thread, and a compression spring is sleeved around the fixing bolt, and both ends of the compression spring are respectively in conflict with the fixing bolt and the mounting plate.

[0018] A biochemical analyzer comprises the above stirring structure.

[0019] The beneficial effects of the present application are as follows: the present application adopts the design of a mounting plate, and after the sampling needle is inserted into the container, the ultrasonic generator works, the mounting plate vibrates, and the vibration force can be transmitted to the sampling needle connected thereto, so that the sampling end inserted into the container can vibrate, thereby vibrating and stirring the sample and reagent therein, and after the stirring is completed, the sampling needle can directly sample the mixed solution, and by combining the stirring step with the sampling step, cross contamination between samples is less likely to occur. Compared with the prior art, the present application optimizes the device structure, so that the structure of the fully automatic biochemical analyzer is simple and convenient for daily maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of this application;

[0021] Figure 2 This application Figure 1 A half-section schematic diagram of the structure;

[0022] Figure 3 This application Figure 2 A magnified image of point A;

[0023] Figure 4 It is a schematic diagram of the circular plate structure of this application;

[0024] Figure 5 It is a half-section schematic diagram of the mounting plate structure of the present application;

[0025] Figure numerals: 1, circular plate; 2, connecting column; 3, sleeve; 4, mounting plate; 5, ultrasonic generator; 6, mounting piece; 7, through hole; 8, sampling needle; 9, mounting end; 10, sampling end; 11, arc surface; 12, spherical block; 13, ball seat; 1301, spherical groove; 14, buffer sleeve; 15, buffer pad; 16, annular plate; 17, flange bolt; 18, fixing bolt; 19, compression spring. Implementation

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Example

[0027] like Figure 1-Figure 5 As shown, a stirring structure proposed in Embodiment 1 of the present application includes:

[0028] The circular plate 1 has a connecting column 2 on its top, which is connected to the middle of the circular plate 1 and is on the same axis as the circular plate 1. The outer diameter of the circular plate 1 is larger than the outer diameter of the connecting column 2. The connecting column 2 can be installed on the output end of other driving mechanisms, and the circular plate 1 is controlled to move by the driving mechanism.

[0029] The sleeve 3 is sleeved on the circumferential side of the connecting column 2 and fixedly connected to the circular plate 1. The bottom of the sleeve 3 is fixed to the circular plate 1. The top of the sleeve 3 is provided with a mounting plate 4. The mounting plate 4 is an annular stainless steel plate. The mounting plate 4 is parallel to the circular plate 1. There is a spacing between the mounting plate 4 and the circular plate 1 that is equal to the length of the sleeve 3.

[0030] There are two ultrasonic generators 5, which are prior art. They are mounted on the bottom of the mounting plate 4 through a mounting member 6. The two ultrasonic generators 5 are symmetrically mounted on the mounting plate 4 with the axis of the connecting column 2 as the center. When the ultrasonic generator 5 is working, it can generate ultrasonic waves with the same vibration frequency as the mounting plate 4. After the ultrasonic waves enter the mounting plate 4, they can drive it to vibrate.

[0031] A through hole 7 is provided on the circular plate 1. The through holes 7 penetrate the top and bottom of the circular plate 1 and are arranged in a circular array along the axis of the circular plate 1.

[0032] The sampling needle 8 is made of stainless steel. The sampling needle 8 is a prior art and will not be described in detail here. The number of the sampling needle 8 and the through hole 7 is the same. The sampling needle 8 has a mounting end 9 and a sampling end 10. The mounting end 9 passes through the through hole 7 from bottom to top and is movably connected to the bottom of the mounting plate 4. The outer diameter of the sampling end 10 is smaller than the outer diameter of the mounting end 9. The sampling needle 8 contacts the mounting plate 4. When the sampling needle 8 is inserted into the container, the ultrasonic generator 5 works and the mounting plate 4 vibrates. The vibration force can be transmitted to the sampling needle 8 connected thereto, so that the sampling end 10 inserted into the container can vibrate, thereby vibrating and stirring the sample and reagent therein. After the stirring is completed, the sampling needle 8 can directly sample the mixed solution. It is specifically explained that under the dual restrictions of the mounting plate 4 and the inner wall of the through hole 7, the vibration amplitude of the sampling needle 8 is limited and it is not easy to contact the inner wall of the container.

[0033] The present application adopts the design of the mounting plate 4. After the sampling needle 8 is inserted into the container, the ultrasonic generator 5 starts working and the mounting plate 4 vibrates. The vibration force can be transmitted to the sampling needle 8 connected thereto, so that the sampling end 10 inserted into the container can vibrate, thereby vibrating and stirring the sample and reagent therein. After the stirring is completed, the sampling needle 8 can directly sample the mixed solution. By combining the stirring step with the sampling step, cross contamination between samples is less likely to occur. Compared with the prior art, the present application optimizes the device structure, making the fully automatic biochemical analyzer simple in structure and convenient for daily maintenance. Example

[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the second embodiment discloses a sampling needle 8 based on the first embodiment, wherein:

[0035] Both side openings of the through hole 7 are constructed with arc surfaces 11, and the ends of the arc surfaces 11 located inside the through hole 7 are connected to each other. With this design, when the sampling needle 8 vibrates, the contact area between the sampling needle 8 and the inner wall of the through hole 7 is only the connection between the two arc surfaces 11, so that the sampling needle 8 is not easy to collide with the inner wall of the through hole 7, so that the sampling needle 8 is not easy to be damaged.

[0036] In the second embodiment, a spherical block 12 is constructed on the sampling needle 8, which is located at the top of the mounting end 9. A ball seat 13 is constructed at the bottom of the mounting plate 4, and the number of the ball seat 13 is the same as that of the sampling needle 8. The spherical block 12 is spherically hinged with the ball seat 13. A spherical groove 1301 for accommodating the spherical block 12 is constructed at the bottom of the ball seat 13, and the diameter of the notch of the spherical groove 1301 is smaller than the maximum diameter of the spherical block 12. The spherical block 12 can rotate and tilt freely inside it, and has good static stability in motion. When the mounting plate 4 vibrates, the spherical block 12 can move in the spherical groove 1301 of the ball seat 13, so that the vibration force is not easy to affect the connection between the two, and the two are not easy to separate from each other. Example

[0037] like Figure 2-Figure 5 As shown, the third embodiment of the present application further improves the present application on the basis of the first and second embodiments. In the third embodiment, a buffer sleeve 14 is provided on the outer side of the connecting column 2, which contacts the inner side of the sleeve 3, and the sleeve 3 can be separated from the connecting column 2 by the buffer sleeve 14. A buffer pad 15 is constructed on the bottom circumference of the buffer sleeve 14, which contacts the bottom of the sleeve 3, and can separate the sleeve 3 from the circular plate 1. The buffer sleeve 14 and the buffer pad 15 are both made of rubber material. When the mounting plate 4 vibrates, the vibration force will be transmitted to the sleeve 3, and the buffer sleeve 14 and the buffer pad 15 can effectively reduce the influence of the vibration force on the connecting column 2 and the circular plate 1.

[0038] In the third embodiment, the sleeve 3 is detachably connected to the circular plate 1. With this design, after the sampling needle 8 or the ultrasonic generator 5 is damaged, the sleeve 3 and the circular plate 1 can be disassembled and the damaged part can be replaced and repaired.

[0039] In the third embodiment, an annular plate 16 is constructed at the bottom of the sleeve 3, which contacts the top of the buffer pad 15. The annular plate 16 is connected to the circular plate 1 by flange bolts 17. The circular plate 1 and the annular plate 16 are provided with mounting holes for fixing the flange bolts 17. The flange bolts 17 penetrate the buffer pad 15. The number of flange bolts 17 shall not be less than three, and they are distributed in a ring shape with the axis of the connecting column 2 as the center. With such a design, when the annular plate 16 and the circular plate 1 are fixed by the flange bolts 17, the buffer pad 15 can resist the bottom of the annular plate 16 to force the annular plate 16 to lift upward. When the vibration force is transmitted to the flange bolts 17 through the annular plate 16, under the action of this thrust, the flange bolts 17 are not easy to loosen, thereby improving its fixing effect on the annular plate 16.

[0040] In the third embodiment, the mounting member 6 includes a plurality of fixing bolts 18, all of which pass through the top of the mounting plate 4 and are threadedly matched with the ultrasonic generator 5. The ultrasonic generator 5 is fixed to the bottom of the mounting plate 4 by the fixing bolts 18, and a compression spring 19 is sleeved around the circumference of the fixing bolt 18. The two ends of the compression spring 19 are respectively in contact with the fixing bolt 18 and the mounting plate 4. The compression spring 19 is used to provide a thrust forcing the fixing bolt 18 to move away from the mounting plate 4. When the vibration force is transmitted to the fixing bolt 18, under the action of this thrust, the fixing bolt 18 is not easy to loosen, so that the ultrasonic generator 5 is not easy to separate from the mounting plate 4. Example

[0041] A biochemical analyzer proposed in the fourth embodiment of the present application includes the above-mentioned stirring structure.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stirring structure, characterized in that: include: A circular plate (1) having a connecting column (2) on its top; A sleeve (3) is sleeved on the circumferential side of the connecting column (2) and fixedly connected to the circular plate (1); a mounting plate (4) is formed on the top of the sleeve (3); the mounting plate (4) is parallel to the circular plate (1); An ultrasonic generator (5) is mounted on the bottom of the mounting plate (4) via a mounting member (6); A through hole (7) is formed on the circular plate (1) and is arranged in a plurality of circular arrays along the axis of the circular plate (1); The sampling needle (8) has the same number as the through holes (7), and the sampling needle (8) has a mounting end (9) and a sampling end (10). The mounting end (9) passes through the through hole (7) from bottom to top and is movably connected to the bottom of the mounting plate (4), and the outer diameter of the sampling end (10) is smaller than the outer diameter of the mounting end (9).

2. The stirring structure according to claim 1, characterized in that: Both side openings of the through hole (7) are constructed with arcuate surfaces (11), and the ends of the arcuate surfaces (11) located inside the through hole (7) are connected to each other.

3. The stirring structure according to claim 2, characterized in that: The sampling needle (8) is provided with a spherical block (12) located at the top of the mounting end (9); the mounting plate (4) is provided with a ball seat (13) at the bottom, the number of which is the same as the sampling needle (8); the spherical block (12) and the ball seat (13) are spherically hinged.

4. The stirring structure according to claim 1, characterized in that: The outer side of the connecting column (2) is provided with a buffer sleeve (14), which contacts the inner side of the sleeve (3); the bottom circumference of the buffer sleeve (14) is provided with a buffer pad (15), which contacts the bottom of the sleeve (3).

5. The stirring structure according to claim 4, characterized in that: The sleeve (3) is detachably connected to the circular plate (1).

6. The stirring structure according to claim 5, characterized in that: The bottom of the sleeve (3) is provided with an annular plate (16) which contacts the top of the buffer pad (15); the annular plate (16) is connected to the circular plate (1) via flange bolts (17).

7. The stirring structure according to claim 1, characterized in that: The mounting member (6) comprises a plurality of fixing bolts (18), all of which penetrate the top of the mounting plate (4) and are threadedly engaged with the ultrasonic generator (5), and a compression spring (19) is sleeved around the fixing bolts (18), with two ends of the compression spring (19) respectively abutting against the fixing bolts (18) and the mounting plate (4).

8. A biochemical analyzer, characterized in that: The invention comprises a stirring structure as claimed in any one of claims 1 to 7.

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