Trace sample injector

Abstract

The utility model relates to the technical field of sample adding devices, and discloses a trace sample adding device which comprises a sample adding device, the sample adding device is characterized in that a pipetting button is arranged at the top of a pipetting gun; the suction head is arranged at the bottom of the pipette; the gun handle is arranged on the outer side wall of the pipette; a fixing device is arranged on the sample adding device; fixing rods are arranged on the outer side walls of the fixing columns; the clamping plate is arranged at one end of the fixing rod and contains the pipette; the sliding rod is arranged at the top of the fixing column, and a sliding groove is formed in the top of the fixing column; the transverse rod is arranged at the top of the sliding rod; according to the micro sample injector, the two pipettes are fixed on the clamping plate, then the handle is held, the pressing plate is pressed by a thumb, the pipetting button is driven by the connecting mechanism to move downwards, and the pipetting button is loosened and rebounded by the restoring mechanism, so that the sample is sucked and injected, and the sample injection operation of the two tubes of samples is completed; when a certain sample needs to be detected for multiple times, time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of sample injectors, in particular to a micro-sample injector. Background Art

[0002] In medical clinical testing, isotope radioimmunity, and experimental sampling in scientific research units or chemical, food and other enterprises, micropipette is an indispensable tool. The more commonly used and practical sampler is also called a pipette. The pipette is also called a pipette gun. It is a measuring tool that transfers liquid from the original container to another container within a certain range. It is widely used in biology, chemistry and other fields. The design basis of the commonly used clinical micropipette is Hooke's law: that is, within a certain limit, the long force of the spring extension is proportional to the elastic force, that is, the volume of the liquid in the pipette is proportional to the spring elastic force in the pipette. There are two physical principles for micropipette addition: using air cushion addition and using positive movement of the piston without air cushion. These two micropipettes with different principles have different specific application ranges.

[0003] When using a pipette to add samples, in order to avoid the occurrence of special detection, no less than two tests will be performed, which means that the pipette needs to be used twice. In order to pursue convenience, especially when the detection workload is large, we propose a new sampler that can easily add samples to two test tubes at the same time. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides a micro-sample injector, which has the advantage of simultaneous sample injection and solves the problem that the injector cannot inject samples into two test tubes at the same time.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a micro-sample injector, comprising an injecting device; the injecting device comprises: a pipetting button is arranged on the top of the pipette; a suction head is arranged at the bottom of the pipette; a gun handle is arranged on the outer side wall of the pipette; a fixing device is arranged on the top of the injecting device; a fixing rod is arranged on the outer side wall of the fixing column; a splint is arranged at one end of the fixing rod and accommodates the pipette; a sliding rod is arranged on the top of the fixing column, and a sliding groove is opened on the top of the fixing column; a cross bar is arranged on the top of the sliding rod.

[0008] In some embodiments, both ends of the crossbar are provided with covers that cooperate with the pipetting button.

[0009] In some embodiments, a handle is provided on the outer side wall of the fixing column.

[0010] In some embodiments, a connecting rod is disposed on the sliding rod, and a pressing plate is disposed on an outer side wall of the connecting rod.

[0011] In some embodiments, the outer wall of the handle is provided with a groove that matches the pressing plate.

[0012] In some embodiments, the top of the pressing plate is provided with anti-slip grooves.

[0013] In some embodiments, a spring is disposed inside the slide groove to cooperate with the slide rod.

[0014] In some embodiments, the outer side wall of the pipette is provided with a fixing block that matches the clamping plate, and the fixing block is fixed to the pipette by gluing.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a micro sample injector, which has the following beneficial effects:

[0017] The micro-sample injector is configured by fixing two pipettes on a clamping plate, holding a handle, pressing a pressing plate with a thumb, driving a pipetting button to move downward through a connecting mechanism, and rebounding through a recovery mechanism when released, so as to absorb and inject the sample, thereby completing the injection operation of two tubes of samples. The micro-sample injector is used when a certain sample needs to be tested multiple times, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the fixing device of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the sample adding device of the utility model

[0021] Figure 4 This is a schematic diagram of the slide structure of the utility model.

[0022] In the figure:

[0023] 1. Sample adding device; 11. Pipette gun; 12. Pipette button; 13. Pipette tip; 14. Gun handle; 15. Fixing block;

[0024] 2. Fixing device; 21. Fixing column; 211. Fixing rod; 22. Clamp; 23. Sliding rod; 231. Sliding groove; 232. Spring; 24. Cross bar; 25. Cover body; 26. Connecting rod; 261. Pressing plate; 27. Handle; 28. Groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0027] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In the related art, when a pipette is used to add samples, in order to avoid the occurrence of peculiarities in the test, the test will be performed no less than twice, which means that the pipette needs to be used twice, in order to pursue convenience, especially when the test workload is large.

[0029] In order to solve the problems in the related art to a certain extent, the embodiment of the present application provides a micro sample injector. When it is needed, the pipette gun 11 only needs to be fixed on the clamping plate 22, and then the handle 27 is held, and the pressing plate 261 is pressed with the thumb. The pipette button 12 is driven to move downward through the connecting mechanism, and rebounds through the recovery mechanism when released, so as to absorb and inject the sample and complete the sample injection.

[0030] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0031] Combination Figure 1-Figure 4The embodiment of the present application provides a micro-sample injector, including an injector 1; the injector 1 includes: a pipette button 12 is arranged on the top of a pipette gun 11; a suction head 13 is arranged at the bottom of the pipette gun 11; a gun handle 14 is arranged on the outer wall of the pipette gun 11; a fixing device 2 is arranged on the top of the injector 1; a fixing rod 211 is arranged on the outer wall of a fixing column 21; a splint 22 is arranged at one end of the fixing rod 211 and accommodates the pipette gun 11; a sliding rod 23 is arranged on the top of the fixing column 21, and a sliding groove 231 is opened on the top of the fixing column 21; a cross bar 24 is arranged on the top of the sliding rod 23.

[0032] When in use, first clamp the pipette 11 in the clamping plate 22 and fix it, then press the slide bar 23 on the top of the fixed column 21 to drive the cross bar 24 to move downward, and the cross bar 24 will squeeze the pipetting button 12 on the top of the pipette 11, and then put it into the sample to be sucked, release the slide bar 23, and let the cross bar 24 move upward and rebound under the push of the recovery mechanism of the pipetting button 12. Make the suction head 13 at the bottom suck the sample liquid, and when the slide bar 23 is pressed again, the sample in the suction head 13 can be injected. The pipette 11 is usually composed of a pipette handle, an adjustable volume knob, a volume scale, a piston, a sealing pad, a suction head 13, a spring and other parts. Among them, the pipette handle is the support and gripping part of the entire pipette, and the suction head 13 is the channel for liquid to enter and exit the pipette. The volume knob can adjust the volume of the pipette, and the volume scale can help the user to accurately adjust the volume of the liquid. The piston is the key part of the pipette volume adjustment, the sealing gasket can ensure the sealing of the liquid in the pipette, and the spring provides the reset force of the piston. The piston is connected to the pipetting button 12 on the top. Because the pipette gun 11 belongs to the prior art, the internal structure diagram of the pipette gun 11 is not drawn in the attached figure.

[0033] In some embodiments, the two ends of the crossbar 24 are provided with covers 25 that match the pipetting button 12. The covers 25 at both ends of the crossbar 24 are for better fixing with the pipetting button 12, and then squeezing the pipetting button 12 to descend.

[0034] In some embodiments, a handle 27 is provided on the outer side wall of the fixing column 21. The handle 27 is provided to better hold the entire device.

[0035] In some embodiments, the slide bar 23 is provided with a connecting rod 26, and the outer wall of the connecting rod 26 is provided with a pressing plate 261. The connecting rod 26 and the pressing plate 261 are provided so that when the inspector holds the handle 27 with his hand, the thumb can press the pressing plate 261 downward to drive the slide bar 23 to move downward through the connecting rod 26.

[0036] In some embodiments, the outer wall of the handle 27 is provided with a groove 28 for matching the pressing plate 261. The groove 28 is to facilitate the pressing plate 261 to move downward normally, but does not hinder the grip of the handle 27.

[0037] In some embodiments, the top of the pressing plate 261 is provided with anti-skid patterns, which are used to increase the friction between the pressing plate 261 and the fingers, so as to prevent the fingers wearing gloves from slipping when pressing the pressing plate 261.

[0038] In some embodiments, a spring 232 is disposed inside the slide groove 231 to cooperate with the slide bar 23. The spring 232 can assist the slide bar 23 to rebound to its original position after the finger is released.

[0039] In some embodiments, the outer wall of the pipette 11 is provided with a fixing block 15 that cooperates with the clamping plate 22, and the fixing block 15 is fixed to the pipette 11 by gluing. The fixing block 15 is a strip-shaped structure, which is glued to the outer wall of the pipette 11 by gluing, and the auxiliary clamping plate 22 fixes the pipette to prevent it from sliding up and down.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0041] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A micro-sample injector, comprising an injector device (1); the injector device (1) comprises: A pipette gun (11), the top of which is provided with a pipetting button (12); A suction head (13) is arranged at the bottom of the pipette gun (11); A gun handle (14) is arranged on the outer side wall of the pipette gun (11); The invention is characterized in that: the sample adding device (1) is provided with a fixing device (2); A fixing column (21), the outer side wall of which is provided with a fixing rod (211); A clamping plate (22) is arranged at one end of the fixing rod (211) and contains the liquid transfer gun (11); A slide bar (23) is arranged on the top of the fixed column (21), and a slide groove (231) is provided on the top of the fixed column (21); A cross bar (24) is arranged on the top of the slide bar (23).

2. A micro sample injector according to claim 1, characterized in that: Cover bodies (25) that match the pipetting button (12) are provided at both ends of the crossbar (24).

3. A micro sample injector according to claim 1, characterized in that: The outer side wall of the fixing column (21) is provided with a handle (27).

4. A micro sample injector according to claim 3, characterized in that: A connecting rod (26) is provided on the sliding rod (23), and a pressing plate (261) is provided on the outer side wall of the connecting rod (26).

5. A micro sample injector according to claim 4, characterized in that: The outer side wall of the handle (27) is provided with a groove (28) that matches the pressing plate (261).

6. A micro-sample injector according to claim 4, characterized in that: The top of the pressing plate (261) is provided with anti-slip grooves.

7. The micro-sample injector according to claim 1, characterized in that: A spring (232) that cooperates with the slide rod (23) is arranged inside the slide groove (231).

8. The micro-sample injector according to claim 1, characterized in that: The outer side wall of the liquid transfer gun (11) is provided with a fixing block (15) which matches the clamping plate (22), and the fixing block (15) is fixed to the liquid transfer gun (11) by gluing.

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