A multi-channel micro-volume sample dispensing device

Abstract

The utility model relates to the field of trace sample adding distributor especially, more channel trace sample adding distributor. Including pipette and adjusting structure, the lower end of pipette installs pipette, the inside installation of pipette has push rod, the lower end of pipette arc surface is equipped with connecting structure, the connecting structure includes fixed ring, fixed ring and pipette fixed connection, the arc surface slidingly connected of pipette has connecting pipe, the upper end fixed connection of connecting pipe has connecting ring, the upper end fixed connection of connecting ring has a plurality of clamping bars, the clamping bar and fixed ring slidingly connected, the arc surface slidingly connected of pipette has the sliding ring. The utility model provides a kind of more channel trace sample adding distributor, which can be easily distributed in multiple channels for trace sample adding distributor, not only can facilitate the increase of experimental progress, but also can greatly reduce the workload of experimental personnel.

Description

Technical Field

[0001] This utility model relates to the field of micro-volume dispensing devices, and in particular to a multi-channel micro-volume dispensing device. Background Technology

[0002] A microdispenser is a laboratory instrument typically used for the precise dispensing of liquid samples, particularly in experiments requiring high precision and low volume liquid handling. It can aspirate minute amounts of liquid from a source and accurately transfer them to a target container, and is widely used in fields such as chemistry, medicine, and life sciences.

[0003] Existing technologies, such as the invention with publication number CN113766902B, disclose a dispenser for discharging pharmaceutical liquids. This patent presents an improved solution for a dispenser that discharges pharmaceutical liquids in the form of droplets. Such a dispenser is constructed as a side-driven dispenser, which has an operating button on the side of the dispenser in the region of the outer peripheral surface of the housing. The side-driven dispenser also includes a liquid reservoir, a pump mechanism with a variable-volume pump chamber, and an outlet for discharging the liquid. The invention first proposes a design for the operating button as a spring-loaded flip-top button, a method of reducing the volume of the liquid channel by means of inserts, and a special housing shape, all aimed at making the dispenser suitable for customer needs.

[0004] The inventors discovered in daily use that existing single-channel dispensers can only process one sample at a time, which leads to longer processing times in high-throughput experiments. For experiments requiring the simultaneous processing of a large number of samples, using a single-channel dispenser may require repeated operations, significantly reducing efficiency. Operators using single-channel dispensers need to frequently repeat the sample addition process, which not only increases operation time but also labor intensity. Especially when dealing with multiple sets of samples or large amounts of reagents, repetitive operations become tedious and error-prone. Because only one sample can be processed at a time, operators are prone to fatigue when performing multiple additions, further increasing the probability of errors. Errors manifest as inaccurate sample volume, missed additions, or sample mixing, affecting the accuracy of experimental results.

[0005] This application provides another technical solution to this technical problem, aiming to provide those skilled in the art with multiple options for solving the problem. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as the difficulty in performing multi-channel sample distribution.

[0007] To solve the above technical problems, this utility model provides a multi-channel micro-volume sample dispenser, including: a pipette and an adjustment structure. A pipette tube is installed at the lower end of the pipette, and a push rod is installed inside the pipette. A connecting structure is provided on the arc surface of the lower end of the pipette. The connecting structure includes a fixing ring, which is fixedly connected to the pipette. A connecting tube is slidably connected to the arc surface of the pipette. A connecting ring is fixedly connected to the upper end of the connecting tube. Several locking rods are fixedly connected to the upper end of the connecting ring, and the locking rods are slidably connected to the fixing ring. A slip ring is slidably connected to the arc surface of the pipette, and a retaining ring is fixedly connected to the arc surface of the slip ring. The retaining ring engages with the locking rods. A connecting tube is fixedly connected to the lower end of the connecting tube. Several auxiliary tubes are provided at the lower end of the connecting tube. The ends of the auxiliary tubes are connected to each other via the adjustment structure. One of the auxiliary tubes is fixedly connected to the connecting tube, and an outlet tube is fixedly connected to the lower surface of the auxiliary tube.

[0008] The effect achieved by the above components is as follows: when multi-channel liquid pipetting is required, pulling the connecting tube moves the connecting tube, which in turn moves the connecting tube, which in turn moves the auxiliary tube and the outlet tube. Then, the connecting tube moves the connecting ring, which in turn moves the locking rod. The locking rod is then aligned with the fixing ring, and then the locking rod passes through the fixing ring. After moving to the appropriate position, pulling the sliding ring moves the locking ring, which then locks the locking rod in place for fixation. Then, multiple outlet tubes are used for multi-channel liquid pipetting.

[0009] Preferably, a sealing gasket, which is a rubber gasket, is fixedly connected to the inner wall of the connecting ring.

[0010] The effect achieved by the above components is that the sealing gasket can increase the sealing between the connecting ring and the pipette, preventing leakage during pipette use.

[0011] Preferably, the clamp rod has a rectangular cross-section and is a spring steel rod.

[0012] Preferably, the connecting pipe is a plastic pipe, and the cross-section of the connecting pipe is circular.

[0013] The effect achieved by the above components is that the plastic material is relatively inexpensive, which greatly reduces the manufacturing cost of the connecting pipe.

[0014] Preferably, one end of the auxiliary tube is provided with an adjustment structure, the adjustment structure including a fixing pad, the fixing pad being fixedly connected to the auxiliary tube, an extension tube being fixedly connected to the side of the fixing pad away from the auxiliary tube, a connector being fixedly connected to the end of the extension tube away from the fixing pad, the connector being slidably connected to the auxiliary tube, an auxiliary ring being fixedly connected to the arc surface of the connector, and a plurality of slots being opened on the inner wall of the auxiliary tube, the slots being adapted to the auxiliary ring.

[0015] The effect achieved by the above components is as follows: when it is necessary to adjust the length of the extension tube and the auxiliary tube, the auxiliary tube is pulled to move, the auxiliary rod drives the fixing pad to move, the fixing pad drives the extension tube to move, the extension tube drives the connector to move, the connector drives the auxiliary pad to move, the connector slides on the inner wall of the auxiliary tube, the auxiliary tube squeezes the auxiliary pad, and after moving to the appropriate position, the auxiliary ring is locked into the appropriate slot for fixation.

[0016] Preferably, the auxiliary ring has a circular cross-section and is a rubber ring.

[0017] The effects achieved by the above components are: the rubber material has strong plasticity, which makes it easy for the auxiliary ring to shrink, and it also makes it easy to increase the friction between the auxiliary ring and the slot.

[0018] Preferably, a protective pad, which is a rubber pad, is fixedly connected to the inner wall of the auxiliary tube at the end away from the fixing pad.

[0019] The effect achieved by the above components is that the protective pad can protect the connector and auxiliary tube, preventing excessive wear when the auxiliary tube and connector are used.

[0020] Compared with related technologies, the multi-channel micro-volume sample dispenser provided by this utility model has the following beneficial effects:

[0021] By designing the connection structure, existing single-channel dispensers can only process one sample at a time, which leads to increased processing time in high-throughput experiments. For experiments requiring the simultaneous processing of a large number of samples, using a single-channel dispenser may require repeated operations, significantly reducing efficiency. Operators using single-channel dispensers need to frequently repeat the sample addition process, which not only increases operation time but also labor intensity. Especially when involving the dispensing of multiple sets of samples or large amounts of reagents, repetitive operations become cumbersome and error-prone. Because only one sample can be processed at a time, operators are prone to fatigue when performing multiple sample additions, thus increasing the probability of errors. Errors may manifest as inaccurate sample volume, missed samples, or mixed samples, affecting the accuracy of experimental results. This device achieves convenient multi-channel dispensing using a micro-volume dispenser, which not only facilitates increasing experimental progress but also significantly reduces the workload of experimental personnel.

[0022] By setting up an adjustment structure, the spacing between the liquid outlet tubes can be quickly and easily adjusted, which facilitates the sample dispensing for various experiments. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of a multi-channel micro-volume sample dispenser provided by this utility model;

[0024] Figure 2 for Figure 1 The diagram shows the internal structure.

[0025] Figure 3 for Figure 1 The diagram shows the connection structure.

[0026] Figure 4 for Figure 3 The enlarged view at point A is shown below;

[0027] Figure 5 for Figure 1 The diagram shows the adjustment structure.

[0028] Labels in the diagram: 1. Pipette; 2. Push rod; 3. Pipette tube; 4. Connecting structure; 401. Connecting tube; 402. Connecting tube; 403. Auxiliary tube; 404. Dispensing tube; 405. Connecting ring; 406. Sealing gasket; 407. Clamping rod; 408. Clamping ring; 409. Slip ring; 410. Fixing ring; 5. Adjusting structure; 51. Extension tube; 52. Slot; 53. Protective pad; 54. Connector; 55. Auxiliary ring; 56. Fixing pad. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0031] Please see Figures 1 to 5 The present invention provides a multi-channel micro-volume sample dispenser, comprising: a pipette 1 and an adjustment structure 5. A pipette tube 3 is installed at the lower end of the pipette 1, a push rod 2 is installed inside the pipette 1, a connecting structure 4 is provided on the arc surface at the lower end of the pipette 1, and an adjustment structure 5 is provided at one end of the auxiliary tube 403.

[0032] In the embodiments of this utility model, please refer to Figure 3 and Figure 4The connecting structure 4 includes a fixing ring 410, which is fixedly connected to the pipette 1. The pipette 3 is slidably connected to a connecting tube 401. The upper end of the connecting tube 401 is fixedly connected to a connecting ring 405. The upper end of the connecting ring 405 is fixedly connected to several locking rods 407. The locking rods 407 are slidably connected to the fixing ring 410. The pipette 1 is slidably connected to a slip ring 409. The slip ring 409 is fixedly connected to a locking ring 408. The locking ring 408 is engaged with the locking rods 407. The lower end of the connecting tube 401 is fixedly connected to a connecting tube 402. The lower end of the connecting tube 402 is provided with several auxiliary tubes 403. The ends of the several auxiliary tubes 403 that are close to each other are connected by an adjusting structure 5. One of the auxiliary tubes 403 is fixedly connected to the connecting tube 402. The lower surface of the auxiliary tube 403 is fixedly connected to an outlet tube 404. When multi-channel liquid pipetting is required, pull the connecting tube 401 to move it. The connecting tube 401 moves the connecting tube 402, which in turn moves the auxiliary tube 403 and the outlet tube 404. Then, the connecting tube 401 moves the connecting ring 405, which in turn moves the locking rod 407. The locking rod 407 is then aligned with the fixing ring 410, and the locking rod 407 passes through the fixing ring 410. After moving to the appropriate position, pull the sliding ring 409 to move it. The sliding ring 409 moves the locking ring 408, which then engages the locking rod 407 for fixation. Then, multiple outlet tubes 404 are used for multi-channel liquid pipetting. A sealing gasket 406, which is a rubber gasket, is fixedly connected to the inner wall of the connecting ring 405. The sealing gasket 406 increases the seal between the connecting ring 405 and the pipette 1, preventing leakage during use. The clamping rod 407 has a rectangular cross-section and is made of spring steel. The connecting tube 402 is made of plastic and has a circular cross-section. The plastic material is relatively inexpensive, significantly reducing the manufacturing cost of the connecting tube 402.

[0033] In the embodiments of this utility model, please refer to Figure 1 , Figure 3 and Figure 5The adjustment structure 5 includes a fixing pad 56, which is fixedly connected to the auxiliary tube 403. An extension tube 51 is fixedly connected to the side of the fixing pad 56 away from the auxiliary tube 403. A connector 54 is fixedly connected to the end of the extension tube 51 away from the fixing pad 56. The connector 54 is slidably connected to the auxiliary tube 403. An auxiliary ring 55 is fixedly connected to the arc surface of the connector 54. Several slots 52 are opened on the inner wall of the auxiliary tube 403, and the slots 52 are adapted to the auxiliary ring 55. The lengths of the extension tube 51 and the auxiliary tube 403 need to be adjusted. Pulling the auxiliary tube 403 moves the auxiliary rod, causing the fixing pad 56 to move. The fixing pad 56 then moves the extension tube 51, which in turn moves the connector 54. The connector 54 then moves the auxiliary pad, sliding along the inner wall of the auxiliary tube 403. The auxiliary tube 403 compresses the auxiliary pad. After moving to the appropriate position, the auxiliary ring 55 is locked into the appropriate slot 52 for fixation. The auxiliary ring 55 has a circular cross-section and is made of rubber. Rubber has strong plasticity, allowing the auxiliary ring 55 to easily shrink and increasing the friction between it and the slot 52. A protective pad 53, also made of rubber, is fixedly connected to the inner wall of the auxiliary tube 403 at the end furthest from the fixing pad 56. The protective pad 53 protects the connector 54 and the auxiliary tube 403, preventing excessive wear during use.

[0034] The working principle of the multi-channel micro-volume pipetting dispenser provided by this utility model is as follows: When multi-channel pipetting is required, the connecting tube 401 is pulled to move, which in turn moves the connecting tube 402. The connecting tube 402 then moves the auxiliary tube 403 and the outlet tube 404. The connecting tube 401 then moves the connecting ring 405, which in turn moves the locking rod 407. The locking rod 407 is then aligned with the fixing ring 410, and the locking rod 407 passes through the fixing ring 410. After moving to the appropriate position, the sliding ring 409 is pulled to move, which in turn moves the locking ring 408. The locking ring 408 is then locked into the locking rod 407 for fixation. Multiple outlet tubes 404 then perform multi-channel liquid pipetting. The sealing gasket 406 increases the sealing between the connecting ring 405 and the pipette 1, preventing leakage during use. The plastic material is relatively inexpensive, greatly reducing the manufacturing cost of the connecting tube 402.

[0035] The lengths of the extension tube 51 and the auxiliary tube 403 need to be adjusted. Pulling the auxiliary tube 403 moves the auxiliary rod, which in turn moves the fixing pad 56. The fixing pad 56 moves the extension tube 51, which in turn moves the connector 54. The connector 54 moves the auxiliary pad, which slides on the inner wall of the auxiliary tube 403. The auxiliary tube 403 squeezes the auxiliary pad. After moving to the appropriate position, the auxiliary ring 55 is locked into the appropriate slot 52 for fixation. The rubber material has strong plasticity, which makes it easy for the auxiliary ring 55 to shrink and also increases the friction between the auxiliary ring 55 and the slot 52. The protective pad 53 can protect the connector 54 and the auxiliary tube 403 to prevent excessive wear during use.

[0036] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-channel microdispensing device, characterized in that include: A pipette (1) and an adjustment structure (5) are provided. A pipette tube (3) is installed at the lower end of the pipette (1). A push rod (2) is installed inside the pipette (1). A connecting structure (4) is provided on the arc surface at the lower end of the pipette (1). The connecting structure (4) includes a fixing ring (410) which is fixedly connected to the pipette (1). A connecting tube (401) is slidably connected to the arc surface of the pipette tube (3). A connecting ring (405) is fixedly connected to the upper end of the connecting tube (401). Several locking rods (407) are fixedly connected to the upper end of the connecting ring (405). The locking rods (407) are connected to the fixing ring (410). The pipette (1) is slidably connected to a slip ring (409) on its arc surface. A retaining ring (408) is fixedly connected to the arc surface of the slip ring (409). The retaining ring (408) is engaged with a retaining rod (407). A connecting tube (402) is fixedly connected to the lower end of the connecting tube (401). Several auxiliary tubes (403) are provided at the lower end of the connecting tube (402). The ends of the several auxiliary tubes (403) that are close to each other are connected by an adjustment structure (5). One of the auxiliary tubes (403) is fixedly connected to the connecting tube (402). The lower surface of the auxiliary tube (403) is fixedly connected to an outlet tube (404).

2. The multi-channel micro-volume dispenser according to claim 1, characterized in that, A sealing gasket (406) is fixedly connected to the inner wall of the connecting ring (405), and the sealing gasket (406) is a rubber gasket.

3. The multi-channel micro-volume dispenser according to claim 1, characterized in that, The cross-section of the clamp (407) is rectangular, and the clamp (407) is a spring steel rod.

4. The multi-channel micro-volume dispenser according to claim 1, characterized in that, The connecting pipe (402) is a plastic pipe, and the cross-section of the connecting pipe (402) is circular.

5. A multi-channel micro-volume dispenser according to claim 1, characterized in that, One end of the auxiliary tube (403) is provided with an adjustment structure (5). The adjustment structure (5) includes a fixing pad (56). The fixing pad (56) is fixedly connected to the auxiliary tube (403). An extension tube (51) is fixedly connected to the side of the fixing pad (56) away from the auxiliary tube (403). A connector (54) is fixedly connected to the end of the extension tube (51) away from the fixing pad (56). The connector (54) is slidably connected to the auxiliary tube (403). An auxiliary ring (55) is fixedly connected to the arc surface of the connector (54). Several slots (52) are opened on the inner wall of the auxiliary tube (403). The slots (52) are adapted to the auxiliary ring (55).

6. A multi-channel micro-volume dispenser according to claim 5, characterized in that, The auxiliary ring (55) has a circular cross-section and is a rubber ring.

7. A multi-channel micro-volume dispenser according to claim 5, characterized in that, A protective pad (53) is fixedly connected to the inner wall of the auxiliary tube (403) away from the fixing pad (56), and the protective pad (53) is a rubber pad.

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