Pipette accessory

Abstract

The utility model relates to the technical field of pipettes, in particular to a pipette accessory. The pipette accessory provided by the utility model solves the technical problem that an ear washing bulb for the pipette accessory in the prior art is inconvenient to operate. A pipette fitting includes an ear washing bulb; the quantifying assembly is arranged on the ear washing bulb; the connecting assembly is arranged on the ear washing bulb; the quantitative assembly is arranged and comprises the supporting device and the batcher, the batcher is provided with the quantitative groove, when the ear washing bulb is pressed, the ear washing bulb is pressed through the quantitative groove, the quantitative groove corresponds to the receding groove, and when the ear washing bulb is pressed, the deformation amplitude of the ear washing bulb is limited by the receding groove and the quantitative groove; therefore, the deformation speed or the deformation amplitude of the ear washing bulb can be prevented from being too large, the ear washing bulb is easy to operate, and the use performance of the ear washing bulb is optimized.

Description

Technical Field

[0001] This utility model relates to the field of pipette technology, and in particular to a pipette accessory. Background Technology

[0002] A bulb syringe, also known as a suction bulb, is a rubber instrument with a spherical top and a tubular bottom. It can quickly blow out a large amount of air by squeezing it. It is a commonly used tool in chemical laboratories for quantitative transfer of solutions. In experiments, a bulb syringe is often used in conjunction with a pipette.

[0003] A pipette is a volumetric instrument commonly used in laboratories to accurately transfer a certain volume of liquid. Its working principle is to use pressure difference to transfer liquid. Usually, a bulb syringe is used to create negative or positive pressure inside the pipette, so that the pipette can draw out or dispense reagents.

[0004] The existing syringe bulbs are not easy to operate during the process. The entire bulb can be deformed, and improper operation is easy to occur during operation, such as pressing too fast or deforming the bulb too much, which makes pipetting inconvenient.

[0005] Therefore, the existing pipette fittings with bulb syringes have the technical problem of being inconvenient to operate. Summary of the Invention

[0006] The present invention provides a pipette accessory that solves the technical problem of inconvenient operation of the syringe used in the prior art for pipette accessories.

[0007] Some implementation schemes for solving the above-mentioned technical problems include:

[0008] A pipette accessory, including a syringe bulb;

[0009] A metering component, wherein the metering component is disposed on the syringe bulb;

[0010] and a connecting component, the connecting component being disposed on the ear syringe;

[0011] The metering component includes a support disposed inside the ear syringe and a metering device disposed outside the ear syringe. The metering device is provided with a metering groove that limits the deformation area of ​​the ear syringe when it is pressed. The metering groove passes through the ear syringe. The support is provided with a clearance groove that is corresponding to the metering groove.

[0012] Preferably, there are at least two metering grooves, and the relief grooves correspond one-to-one with the metering grooves, with each metering groove having an independent cross-sectional area.

[0013] Preferably, a support rib is formed between two adjacent relief grooves to support the syringe bulb, and the support rib contacts the inner wall of the syringe bulb.

[0014] Preferably, the metering device includes a first half and a second half, the first half and the second half cooperate to form the metering device, and a receiving cavity for accommodating the bulb is formed between the metering device and the support.

[0015] Preferably, the metering device is also provided with a through hole through which the connecting component passes.

[0016] Preferably, the first half is welded to the second half, or the first half is fixed to the second half by a detachable connection.

[0017] Preferably, the connecting assembly includes a connecting part connected to the ear syringe bulb, a buffer part disposed in the connecting part, and a plug-in part disposed in the buffer part. The buffer part has a buffer cavity, the connecting part has a connecting cavity, and the inner cavity of the plug-in part communicates with the inner cavity of the ear syringe bulb through the buffer cavity and the connecting cavity in sequence.

[0018] Preferably, a flow limiter is provided inside the plug-in portion, the flow limiter having an air hole for gas to pass through, the diameter of the air hole being smaller than the minimum diameter of the inner cavity of the plug-in portion.

[0019] Preferably, the current limiter is a convex ring disposed within the plug portion, and the current limiter and the plug portion are an integral structure.

[0020] Preferably, the plug portion is truncated cone-shaped, the diameter of the end of the plug portion that contacts the buffer portion is greater than the diameter of the end of the plug portion that is away from the buffer portion, and the taper of the outer wall of the plug portion is a Morse taper.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] By setting a metering component, which includes a support and a metering device, the metering device is provided with a metering groove. When the ear syringe is pressed, the ear syringe is pressed through the metering groove. Furthermore, the metering groove is set in correspondence with the relief groove. When the ear syringe is pressed, the deformation range of the ear syringe is limited by the relief groove and the metering groove, thereby preventing the ear syringe from deforming too fast or too wide, making the ear syringe easy to operate and optimizing the performance of the ear syringe.

[0023] By incorporating a support structure to support the inner wall of the syringe bulb, the syringe bulb is less prone to plastic deformation during long-term use, thus extending its service life. Attached Figure Description

[0024] For illustrative purposes, several embodiments of the present invention are illustrated in the following figures. These figures are incorporated herein by reference and form part of the detailed description. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring the concept of the subject matter of the present invention.

[0025] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0026] Figure 2 This is a schematic diagram of the internal structure of the connecting component.

[0027] Figure 3 This is a schematic diagram of the present invention.

[0028] Figure 4 for Figure 3 A schematic diagram omitting the quantitative components.

[0029] Figure 5 This is a schematic diagram of the first angle of the quantitative component.

[0030] Figure 6 This is a schematic diagram of the second angle of the quantitative component.

[0031] As shown in the figure:

[0032] 1. Ear syringe.

[0033] 2. Quantitative component, 21. Support, 211. Displacement groove, 22. Quantifier, 221. Quantitative groove.

[0034] 3. Connecting component, 31. Connecting part, 311. Connecting cavity, 32. Buffering part, 321. Buffering cavity, 33. Insertion part, 331. Flow limiter, 3311. Air hole. Detailed Implementation

[0035] The specific embodiments shown below are intended to describe various configurations of the subject matter of this invention and are not intended to represent the only configuration in which the subject matter of this invention can be practiced. The specific embodiments include detailed descriptions intended to provide a thorough understanding of the subject matter of this invention. However, it will be clear and apparent to those skilled in the art that the subject matter of this invention is not limited to the specific details shown herein and can be practiced without these specific details.

[0036] Understandably, in this document, relational terms such as “first” and “second” are intended to distinguish one entity or operation from another, and are not intended to expressly or imply any actual relationship or order between these entities or operations.

[0037] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Reference Figures 1 to 6 As shown, a pipette accessory includes a bulb syringe 1;

[0039] Quantitative component 2, wherein the quantitative component 2 is disposed on the bulb syringe 1;

[0040] and connecting component 3, the connecting component 3 being disposed on the bulb syringe 1;

[0041] The metering component 2 includes a support 21 disposed inside the ear syringe 1 and a metering device 22 disposed outside the ear syringe 1. The metering device 22 is provided with a metering groove 221 that limits the deformation area of ​​the ear syringe 1 when it is pressed. The metering groove 221 passes through the ear syringe 1. The support 21 is provided with a clearance groove 211, which is correspondingly disposed to the metering groove 221.

[0042] Understandably, when the syringe bulb 1 is pressed, it deforms, causing some air to escape from the pipette. When the syringe bulb 1 is released, its elastic deformation returns to normal, and then a negative pressure is generated inside the pipette, at which point the pipette can draw up the liquid.

[0043] Because of the support 21 and the metering device 22, the metering device 22 is provided with a metering groove 221, and a relief groove 211 is provided at the corresponding position of the support 21. The elastic deformation range of the ear cleaner is limited by the relief groove 211, thereby limiting the deformation range of the ear cleaner 1 when pressing the ear cleaner 1, and preventing the ear cleaner 1 from deforming too fast or too large.

[0044] Although precise quantification cannot be achieved using the metering device 22 and the support 21, the deformation range of the ear syringe bulb 1 can be controlled due to the setting of the support 21 and the metering device 22, thus making the ear syringe easy to operate.

[0045] In addition, the support 21 can also support the bulb syringe 1, so that the bulb syringe 1 is not prone to plastic deformation during long-term use, thus extending the service life of the bulb syringe 1.

[0046] Reference Figures 1 to 6As shown, in some embodiments, there are at least two metering grooves 221, and the yielding grooves 211 correspond one-to-one with the metering grooves 221. Each metering groove 221 has an independent cross-sectional area.

[0047] When a larger volume of liquid needs to be drawn, the bulb syringe 1 can be pressed through the larger metering tank 221, allowing it to deform more significantly and draw in more liquid. Conversely, when a smaller volume of liquid needs to be drawn, the bulb syringe 1 can be pressed through the smaller metering tank 221.

[0048] In some embodiments, a support rib for supporting the bulb 1 is formed between two adjacent relief grooves 211, and the support rib contacts the inner wall of the bulb 1.

[0049] The support 21 and the support ribs forming the support 21 are mainly used to support the syringe bulb 1, so that the syringe bulb 1 deforms locally during the deformation process, preventing the syringe bulb 1 from deforming too much and causing plastic deformation, thus extending the service life of the syringe bulb 1.

[0050] In some embodiments, the metering device 22 includes a first half and a second half, the first half and the second half cooperating to form the metering device 22, and a receiving cavity for accommodating the bulb 1 is formed between the metering device 22 and the support 21.

[0051] The metering device 22 adopts a split structure, which makes it easy to assemble the metering device 22 with the support 21 and the syringe bulb 1.

[0052] In some embodiments, the meter 22 is further provided with a through hole through which the connecting component 3 passes.

[0053] In some embodiments, the first half is welded to the second half, or the first half is fixed to the second half by a detachable connection.

[0054] The connection method between the first and second halves is not limited and can be determined as needed. When the first and second halves are detachably connected, the first and second halves can be reused.

[0055] Reference Figures 1 to 6 As shown, in some embodiments, the connecting component 3 includes a connecting part 31 connected to the ear syringe 1, a buffer part 32 disposed in the connecting part 31, and a plug-in part 33 disposed in the buffer part 32. The buffer part 32 is provided with a buffer cavity 321, the connecting part 31 is provided with a connecting cavity 311, and the inner cavity of the plug-in part 33 communicates with the inner cavity of the ear syringe 1 through the buffer cavity 321 and the connecting cavity 311 in sequence.

[0056] The connecting part 31 and the syringe bulb 1 can be an integral structure. Alternatively, the connecting part 31 and the syringe bulb 1 can be fixed by adhesive bonding. The connecting part 31 and the syringe bulb 1 should have good sealing performance to prevent air leakage when operating the syringe bulb 1.

[0057] The connector 33 is used for assembly with a pipette. Typically, a portion of the connector 33 extends into the pipette. Alternatively, a portion of the pipette extends into the connector 33. The connector 33 and the pipette should also have good sealing performance to prevent air leakage between the connector 33 and the pipette.

[0058] Typically, a portion of the connector 33 extends into the pipette.

[0059] In some embodiments, a flow limiter 331 is provided inside the plug portion 33. The flow limiter 331 has an air hole 3311 for gas to pass through, and the diameter of the air hole 3311 is smaller than the minimum diameter of the inner cavity of the plug portion 33.

[0060] The flow limiter 331 mainly uses the vent 3311 to limit the flow of gas, further preventing the bulb 1 from deforming too quickly.

[0061] Reference Figures 1 to 6 As shown, in some embodiments, the current limiter 331 is a convex ring disposed in the plug portion 33, and the current limiter 331 and the plug portion 33 are an integral structure.

[0062] In some embodiments, the plug portion 33 is shaped like a frustum, the diameter of the end of the plug portion 33 that contacts the buffer portion 32 is greater than the diameter of the end of the plug portion 33 that is away from the buffer portion 32, and the taper of the outer wall of the plug portion 33 is a Morse taper.

[0063] In some embodiments, the plug-in portion 33, the buffer portion 32, and the connecting portion 31 are an integral structure.

[0064] The above describes the subject matter technical solution of this utility model and its corresponding details. It is understood that the above description is only some implementation schemes of the subject matter technical solution of this utility model, and some details may be omitted in the specific implementation.

[0065] Furthermore, in some embodiments of the above utility model, multiple embodiments may be combined; however, due to space limitations, all such combinations will not be listed here. Those skilled in the art can freely combine the above embodiments according to their needs to achieve a better application experience.

[0066] When implementing the subject matter technical solution of this utility model, those skilled in the art can obtain other detailed configurations or drawings based on the subject matter technical solution and the accompanying drawings. Obviously, without departing from the subject matter technical solution of this utility model, these details still fall within the scope of the subject matter technical solution of this utility model.

Claims

1. A pipette fitting, characterized in that: The device includes a bulb syringe (1); a metering component (2) disposed on the bulb syringe (1); and a connecting component (3) disposed on the bulb syringe (1). The metering component (2) includes a support (21) disposed inside the bulb syringe (1) and a metering device (22) disposed outside the bulb syringe (1). The metering device (22) is provided with a metering groove (221) that limits the deformation area of ​​the bulb syringe (1) when the bulb syringe (1) is pressed. The metering groove (221) passes through the bulb syringe (1). The support (21) is provided with a clearance groove (211) that corresponds to the metering groove (221).

2. The pipette fitting according to claim 1, characterized in that: There are at least two quantitative grooves (221), and the yielding grooves (211) correspond one-to-one with the quantitative grooves (221). Each quantitative groove (221) has an independent cross-sectional area.

3. The pipette fitting according to claim 2, characterized in that: A support rib is formed between two adjacent relief grooves (211) to support the ear bulb (1), and the support rib is in contact with the inner wall of the ear bulb (1).

4. The pipette fitting according to claim 2, characterized in that: The metering device (22) includes a first half and a second half, the first half and the second half cooperate to form the metering device (22), and the metering device (22) and the support (21) form a receiving cavity for accommodating the ear syringe (1).

5. The pipette fitting according to claim 4, characterized in that: The meter (22) is also provided with a through hole through which the connecting component (3) passes.

6. The pipette fitting according to claim 5, characterized in that: The first half is welded to the second half, or the first half is fixed to the second half by a detachable connection.

7. The pipette fitting according to claim 1, characterized in that: The connecting assembly (3) includes a connecting part (31) connected to the ear syringe (1), a buffer part (32) disposed in the connecting part (31), and a plug part (33) disposed in the buffer part (32). The buffer part (32) is provided with a buffer cavity (321), and the connecting part (31) is provided with a connecting cavity (311). The inner cavity of the plug part (33) communicates with the inner cavity of the ear syringe (1) through the buffer cavity (321) and the connecting cavity (311) in sequence.

8. The pipette fitting according to claim 7, characterized in that: A flow limiter (331) is provided inside the plug part (33). The flow limiter (331) has an air hole (3311) for gas to pass through. The diameter of the air hole (3311) is smaller than the minimum diameter of the inner cavity of the plug part (33).

9. The pipette fitting according to claim 8, characterized in that: The current limiter (331) is a convex ring disposed in the plug part (33), and the current limiter (331) and the plug part (33) are an integral structure.

10. The pipette fitting according to claim 9, characterized in that: The plug part (33) is shaped like a frustum. The diameter of the end of the plug part (33) that contacts the buffer part (32) is greater than the diameter of the end of the plug part (33) that is away from the buffer part (32). The taper of the outer wall of the plug part (33) is a Morse taper.

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