Sample adding mechanism of PCR instrument

Abstract

The utility model discloses a PCR instrument's sample adding mechanism, including instrument main part and sample adding seat, the upper end face of instrument main part is equipped with the sample placing seat, the one side of instrument main part is equipped with the receiving groove, the side edge of receiving groove is movably equipped with the sealing plate, the inner side of receiving groove is equipped with the positioning receiving seat and the telescopic rod, and the telescopic rod is equipped with the positioning receiving seat and the telescopic rod. The bottom end of the telescopic rod is connected with the instrument main body through a second knob, a sample adding seat is mounted at the upper end of the telescopic rod, and a plurality of sample adding assemblies are mounted on the inner side of the sample adding seat; the sample adding assembly comprises a locking ring, an annular indicator lamp is arranged in the locking ring, a sample placing tube is mounted on the inner side of the locking ring, and a plugging cover is mounted at the upper end of the sample placing tube. The automatic sample adding device has the advantages that by displaying and accurately controlling the adding state and quantity of each sample, the stable adding of the samples can be effectively ensured, and the difficulty of manually adding the samples is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of experimental instruments, in particular to a sample adding mechanism of a PCR instrument. Background Art

[0002] PCR amplifier, also known as PCR gene amplifier, PCR nucleic acid amplifier, polymerase chain reaction nucleic acid amplifier, is an instrument that uses PCR technology to amplify specific DNA. It is widely used in medical and biological laboratories. For example, it is used to determine whether a specimen will show a spectrum of a certain genetic disease, diagnosis of infectious diseases, gene replication, and paternity testing. When using a PCR amplifier, the user's hands must always be prevented from direct contact with the sample.

[0003] However, in the prior art, when using a PCR amplification instrument, samples need to be added and placed manually, the positions of samples are easily confused, and it is difficult to accurately display whether samples are added to the test tube and the added amount. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a sample adding mechanism for a PCR instrument. In order to solve the above technical problem, the technical solution of the utility model is:

[0005] A sample adding mechanism of a PCR instrument comprises an instrument body and a sample adding seat, wherein the upper end surface of the instrument body is provided with a sample placing seat, a storage slot is provided on one side of the instrument body, a sealing plate is movably installed on the side of the storage slot, a positioning storage seat and a telescopic rod are installed on the inner side of the storage slot, the bottom end of the telescopic rod is connected to the instrument body through a second knob, the upper end of the telescopic rod is provided with a sample adding seat, and a plurality of sample adding components are installed on the inner side of the sample adding seat;

[0006] The sample adding assembly comprises a locking ring, an annular indicator light is arranged inside the locking ring, a sample placing tube is installed on the inner side of the locking ring, a sealing cover is installed on the upper end of the sample placing tube, and a metering valve is installed on the inner side of the middle part of the locking ring.

[0007] Preferably, a protective plate is movably mounted on one side of the sample placement seat at the upper end of the instrument body, an isolation cover is fixedly mounted in the middle of the protective plate, and a main display is provided on the front end surface of the instrument body.

[0008] Preferably, an addition amount display is fixedly mounted on the upper end surface of the sample adding seat, and the sample adding seat is fixedly connected to the upper end of the telescopic rod via a first knob.

[0009] Preferably, one end of the second knob passes through the bottom end of the telescopic rod and is connected to the instrument body via a thread, the positioning storage seat is fixed to the instrument body via screws, and a plurality of positioning columns are provided on one side of the positioning storage seat.

[0010] Preferably, the sample adding seat is bonded and fixed to the locking ring, the locking ring is threadedly connected to the sample placement tube, the blocking cover is clamped and installed on the upper end of the locking ring, and an air supply channel is provided inside the blocking cover.

[0011] Preferably, the annular indicator light, the metering valve and the addition amount display are electrically connected.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. A storage slot is provided on one side of the instrument body, through which the sample adding seat, sample adding assembly and telescopic rod are stored, which is convenient for use and can avoid the loss of parts. The sample inside the sample placement tube is guided into the test tube through the metering valve, and an air supply channel is provided inside the sealing cover to maintain the air pressure balance inside the sample placement tube when the sample is added;

[0014] 2. During the process of adding one of the samples, the color change of the ring indicator light is used to display the adding status, and the adding amount is accurately displayed through the metering valve and the adding amount display, which facilitates the control of sample addition and reduces the difficulty of manual addition. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 A top view of the utility model as a whole;

[0017] Figure 3 It is a rear side view of the utility model as a whole;

[0018] Figure 4 This is a schematic diagram of the partial cross-sectional structure of the sample adding component of the utility model.

[0019] In the figure: 1. Instrument body; 2. Main display; 3. Protective plate; 4. Isolation cover; 5. Sample placement seat; 6. Sample addition seat; 7. Sample addition assembly; 8. Addition amount display; 9. First knob; 10. Closing plate; 11. Positioning storage seat; 12. Storage slot; 13. Second knob; 14. Telescopic rod; 15. Sample placement tube; 16. Ring indicator light; 17. Locking ring; 18. Metering valve; 19. Sealing cover. DETAILED DESCRIPTION

[0020] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] like Figures 1 to 3 As shown, a sample adding mechanism of a PCR instrument described in the utility model comprises an instrument body 1 and a sample adding seat 6, a sample placing seat 5 is installed on the upper end surface of the instrument body 1, a protective plate 3 is movably installed on one side of the sample placing seat 5 located at the upper end of the instrument body 1, an isolation cover 4 is fixedly installed in the middle of the protective plate 3, and a main display 2 is provided on the front end surface of the instrument body 1;

[0022] A storage groove 12 is provided on one side of the instrument body 1, and a sealing plate 10 is movably installed on the side of the storage groove 12. A positioning storage seat 11 and a telescopic rod 14 are installed on the inner side of the storage groove 12. The sample addition seat 6, the sample addition assembly 7 and the telescopic rod 14 are stored and placed through the storage groove 12, which is convenient for use and can avoid the loss of parts. One end of the second knob 13 passes through the bottom end of the telescopic rod 14 and is connected to the instrument body 1 through a thread. The positioning storage seat 11 is fixed to the instrument body 1 by screws. A plurality of positioning columns are provided on one side of the positioning storage seat 11. The bottom end of the telescopic rod 14 is connected to the instrument body 1 through the second knob 13. The telescopic rod 14 and the sample addition seat 6 are conveniently assembled through the first knob 9 and the second knob 13.

[0023] like Figures 3 to 4 As shown, a sample adding seat 6 is installed at the upper end of the telescopic rod 14, and a plurality of sample adding components 7 are installed on the inner side of the sample adding seat 6. The sample adding component 7 includes a locking ring 17, and a ring-shaped indicator light 16 is provided inside the locking ring 17. A sample placing tube 15 is installed on the inner side of the locking ring 17, and a blocking cover 19 is installed on the upper end of the sample placing tube 15. A metering valve 18 is installed on the inner side of the middle part of the locking ring 17. An addition amount display 8 is fixedly installed on the upper end surface of the sample adding seat 6. The sample adding seat 6 is connected and fixed to the upper end of the telescopic rod 14 by a first knob 9. The ring-shaped indicator light 16, the metering valve 18 and the addition amount display 8 are electrically connected. The addition amount is accurately displayed through the metering valve 18 and the addition amount display 8, which facilitates the control of sample addition and reduces the difficulty of manual addition.

[0024] As the preferred technical solution of this embodiment, Figure 4 As shown, the sample adding seat 6 is bonded and fixed to the locking ring 17, the locking ring 17 is threadedly connected to the sample placement tube 15, the blocking cover 19 is clamped and installed on the upper end of the locking ring 17, and an air supply channel is provided inside the blocking cover 19.

[0025] Working principle: A storage groove 12 is provided on one side of the instrument body 1, and the sample addition seat 6, the sample addition component 7 and the telescopic rod 14 are stored and placed through the storage groove 12, which is convenient for use and can avoid the loss of parts. The telescopic rod 14 and the sample addition seat 6 are taken out from the inner side of the storage groove 12, so that the telescopic rod 14 and the instrument body 1 are fixedly installed by the second knob 13, and the upper end of the telescopic rod 14 and the sample addition seat 6 are fixedly installed by the first knob 9, so that the sample addition component 7 inside the sample addition seat 6 and the test tube inside the sample placement seat 5 correspond one to one.

[0026] After the power is turned on, the sample to be tested is placed inside the sample placement tube 15, and the sample is sealed and isolated by the blocking cover 19. The sample placement tube 15 is installed on the inside of the locking ring 17 by threads. When adding a sample to a test tube, the sample inside the sample placement tube 15 is guided into the test tube through the metering valve 18;

[0027] An air supply channel is provided inside the sealing cover 19 to maintain the air pressure balance inside the sample placement tube 15 when the sample is added. During one of the sample addition processes, the adding status is displayed by the color change of the ring indicator light 16, and the added amount is accurately displayed through the metering valve 18 and the added amount display 8, which facilitates the control of sample addition and reduces the difficulty of manual addition.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A sample adding mechanism for a PCR instrument, comprising an instrument body (1) and a sample adding seat (6), characterized in that: The upper end surface of the instrument body (1) is provided with a sample placement seat (5), one side of the instrument body (1) is provided with a storage groove (12), a sealing plate (10) is movably installed on the side of the storage groove (12), a positioning storage seat (11) and a telescopic rod (14) are installed on the inner side of the storage groove (12), the bottom end of the telescopic rod (14) is connected to the instrument body (1) via a second knob (13), the upper end of the telescopic rod (14) is provided with a sample addition seat (6), and a plurality of sample addition components (7) are installed on the inner side of the sample addition seat (6); The sample adding assembly (7) comprises a locking ring (17), an annular indicator light (16) is arranged inside the locking ring (17), a sample placement tube (15) is installed on the inner side of the locking ring (17), a sealing cover (19) is installed on the upper end of the sample placement tube (15), and a metering valve (18) is installed on the inner side of the middle part of the locking ring (17).

2. A sample adding mechanism for a PCR instrument according to claim 1, characterized in that: A protective plate (3) is movably mounted on one side of the sample placement seat (5) located at the upper end of the instrument body (1), an isolation cover (4) is fixedly mounted in the middle of the protective plate (3), and a main display (2) is provided on the front end surface of the instrument body (1).

3. The sample adding mechanism of a PCR instrument according to claim 1, characterized in that: An addition amount display (8) is fixedly mounted on the upper end surface of the sample addition seat (6), and the sample addition seat (6) is fixedly connected to the upper end of the telescopic rod (14) via a first knob (9).

4. The sample adding mechanism of a PCR instrument according to claim 1, characterized in that: One end of the second knob (13) passes through the bottom end of the telescopic rod (14) and is connected to the instrument body (1) via a thread; the positioning storage seat (11) is fixed to the instrument body (1) via screws; and a plurality of positioning columns are provided on one side of the positioning storage seat (11).

5. The sample adding mechanism of a PCR instrument according to claim 1, characterized in that: The sample adding seat (6) is bonded and fixed to the locking ring (17), the locking ring (17) is threadedly connected to the sample placing tube (15), the blocking cover (19) is clamped and installed on the upper end of the locking ring (17), and an air supply channel is provided inside the blocking cover (19).

6. The sample adding mechanism of a PCR instrument according to claim 3, characterized in that: The annular indicator light (16), the metering valve (18) and the addition amount display (8) are electrically connected.

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