CN215541007U - Pen-holding type liquid-transfering gun - Google Patents

Abstract

The utility model provides a pen-holding type pipette, belonging to the technical field of medical instruments. The pen-holding type pipette comprises a shell, a pipette tip withdrawing button and a pipette tip sucking and releasing button; wear to be equipped with the pipe in the shell, sliding connection has the liquid suction pipe in the pipe, and liquid suction pipe upper end intercommunication has the gasbag, and the gasbag is connected with the liquid suction button, and the upper end of shell is worn to be equipped with and moves back rifle head button, moves back the upper end fixed connection of rifle head button and liquid suction pipe, and the upper end cover of liquid suction pipe is equipped with the spring with liquid suction pipe top parallel and level, and the lower extreme fixed connection of spring is on the inside wall of pipe. The pen-holding type pipette provided by the utility model has a simple structure and is suitable for operators with wrist discomfort.

Description

Pen-holding type liquid-transfering gun

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a pen-holding type pipette.

Background

The pipette is one kind of pipette, is usually used for the pipette of a small amount of liquid or trace liquid in a laboratory, and needs to be repeatedly applied in a large amount in the experimental processes of biology, medicine, chemistry and the like.

Currently, several pipette guns are commonly used in the prior art:

the utility model discloses a patent with the publication number of CN109018730A, and discloses a liquid transfer gun, which comprises a gun body and a gun head assembly, wherein the gun head assembly is connected with the gun body in a clamping manner, a cover plate, a control assembly, a piston rod, a piston cavity and a clamping seat are arranged on the gun body, the clamping seat is connected with the piston through the piston cavity, the piston rod is fixedly connected with the control assembly, the control assembly is sleeved on the cover plate, and the cover plate is fixedly connected with the gun body. The pipette does not need to be adjusted manually, so the operation precision is higher.

The utility model with the publication number of CN209237983U discloses a liquid-transfering gun, which comprises a liquid-transfering gun body, a liquid-transfering gun head and a sealing leakage-proof device; the sealing leakage-proof device comprises a shell, a sealing pull ring, an elastic sealing ring and an elastic block; the shell cover is arranged on the suction end of the liquid-transferring gun body, and is fixedly connected with the suction end of the liquid-transferring gun body, a first hole group and a second hole group are sequentially arranged on the shell from top to bottom, the first hole group comprises a through hole A and a through hole B which are symmetrically arranged on two sides of the shell, the second hole group comprises a through hole C and a through hole D which are symmetrically arranged on two sides of the shell, elastic blocks are hinged to the inner lower end surfaces of the through hole A, the through hole B, the through hole C and the through hole D, a sealing pull ring sleeve is arranged outside the shell, an elastic sealing ring is arranged under the sealing pull ring sleeve, and the sealing pull ring is connected with the elastic sealing ring through a connecting rod. The liquid-transferring gun has the advantages that the assembly and disassembly are labor-saving, the sealing performance and the stability between the liquid-transferring gun body and the liquid-transferring gun head are good, the phenomenon of dripping or falling off of the liquid-transferring gun head after liquid absorption is avoided, and the liquid-transferring gun head is not easy to loosen.

The utility model with the publication number of CN112191290A discloses a liquid-transfering gun, which comprises a base, a supporting arm, a gun body moving device, a piston moving device, a liquid level detection device and a control system, wherein the supporting arm is installed on the base, the gun body moves up and down along the supporting arm under the driving of the gun body moving device, the piston moves along an inner cavity of the gun body under the driving of the piston moving device to realize the suction and discharge of solution, the gun head is installed at the lower part of the gun body, the liquid level detection device is used for detecting whether the gun head contacts the liquid level of the solution, and after the gun head is detected to contact the liquid level of the solution, the control system controls the gun body moving device to enable the gun head to continuously descend by a value preset by the system and then stops, and controls the piston moving device to enable the piston to move up to realize the suction of the solution. The utility model can accurately control the insertion depth of the gun head into the solution without contacting the solution detection liquid level position, and automatically and uniformly suck and discharge the solution.

Three kinds of liquid-transfering guns that exist among the above-mentioned prior art all have the structure complicacy, are not suitable for the unsuitable person of wrist to use, and it is inconvenient to operate. Therefore, a liquid transferring gun suitable for the person with uncomfortable wrist is urgently needed.

SUMMERY OF THE UTILITY MODEL

Accordingly, the present invention is directed to overcome the above-mentioned shortcomings in the prior art, and the present invention provides a pen-holding pipette with a simple structure suitable for the operator with wrist discomfort.

In order to achieve the purpose, the utility model provides the following technical scheme:

a pen-holding pipette comprises a shell, a pipette head and a pipette head withdrawing button;

a circular tube penetrates through the shell, a liquid sucking and discharging button is connected to the outer side wall of the shell in a sliding mode, and the liquid sucking and discharging button slides up and down along the outer side wall of the shell;

a liquid suction and discharge pipe is connected in the round pipe in a sliding manner, an air bag is communicated with the liquid suction and discharge pipe, the air bag is connected with the liquid suction and discharge button, and the lower end of the liquid suction and discharge pipe is connected with the gun head;

the upper end of the liquid suction and discharge pipe is sleeved with a spring, the lower end of the spring is fixedly connected to the side wall of the circular pipe, and the upper end of the spring is flush with the top end of the liquid suction and discharge pipe;

the gun head withdrawing button penetrates through the upper end of the shell, and the lower end of the gun head withdrawing button is fixedly connected with the top end of the liquid sucking and discharging pipe.

Compared with the prior art, the utility model has the following beneficial effects:

1. the pen-holding pipette provided by the utility model has a simple structure and is suitable for operators with uncomfortable wrists.

2. According to the pen-holding pipette, the liquid sucking and discharging button is arranged on the side wall of the shell, the liquid washing and discharging are realized through the matching of the button and the air bag, and the replacement of the pipette head is facilitated through the matching of the pipette head withdrawing button and the spring.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of the combination of the pipette and the pipette button of the present invention;

in the figure, 1, a shell, 2, a gun head, 3, a gun head withdrawing button, 4, a liquid sucking and discharging button, 5, a round pipe, 6, a liquid sucking and discharging pipe, 7, an air bag and 8, a spring are arranged.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, the utility model provides a pen-holding pipette comprising a housing 1, a pipette head 2 and a pipette head withdrawing button 3;

a circular tube 5 penetrates through the shell 1, a liquid sucking and discharging button 4 is connected to the outer side wall of the shell 1 in a sliding mode, and the liquid sucking and discharging button 4 slides up and down along the outer side wall of the shell 1;

a liquid suction and discharge pipe 6 is connected in the circular pipe 5 in a sliding manner, an air bag 7 is communicated with the liquid suction and discharge pipe 6, the air bag 7 is connected with the liquid suction and discharge button 4, and the lower end of the liquid suction and discharge pipe 6 is connected with the gun head 2;

a spring 8 is sleeved at the upper end of the liquid suction and discharge pipe 6, the lower end of the spring 8 is fixedly connected to the side wall of the circular pipe 5, and the upper end of the spring 8 is flush with the top end of the liquid suction and discharge pipe 6;

the gun head withdrawing button 3 penetrates through the upper end of the shell 1, and the lower end of the gun head withdrawing button 3 is fixedly connected with the top end of the liquid sucking and discharging pipe 6.

In the structure of the utility model, the lower end of the spring 8 is fixedly connected to the inner side wall of the circular tube 5, the upper end of the spring 8 is flush with the top end of the liquid suction and discharge tube 6, and the upper end of the spring 8 can restore the original position of the gun head withdrawing button 3, specifically, a bulge is arranged at the joint of the gun head withdrawing button 3 and the liquid suction and discharge tube 6 for clamping the upper end of the spring 8, or outward bulges are respectively arranged at the bottom end of the gun head withdrawing button 3 and the top end of the liquid suction and discharge tube 6 for clamping the spring 8, so that the spring 8 can drive the gun head withdrawing button 3 and the liquid suction and discharge tube 6 to restore the original positions.

The structure of the utility model is divided into three layers, the outermost layer is a shell 1, the middle layer is a circular tube 5, the innermost layer is a liquid sucking and discharging tube 6, an air bag 7 is communicated with the air bag 7, the air bag 7 is used for providing suction force for the liquid sucking and discharging tube 6 so that liquid is sucked or discharged, the air bag 7 is extruded by pressing a button 4 of the liquid sucking and discharging tube, the air in the air bag 7 is discharged, the gun head 2 is put into the liquid, the air in the air bag 7 is discharged, the liquid sucking and discharging tube 6 is in a negative pressure state, and the liquid is pressed into the gun head 2 under the action of atmospheric pressure so as to finish the liquid sucking operation;

when the liquid in the gun head 2 needs to be discharged, the liquid in the gun head 2 is discharged by the gas in the air bag 7 only by pressing the liquid sucking and discharging button 4 again;

when the gun head 2 needs to be replaced, the gun head withdrawing button 3 is only needed to be pressed to drive the liquid suction and discharge pipe 6 to slide downwards, at the moment, the gun head 2 is completely exposed and can be replaced, and after the replacement is completed, the gun head withdrawing button 3 and the liquid suction and discharge pipe 6 are restored to the original position under the action of the spring 8.

In the above structure of the present invention, the liquid sucking and discharging button 4 is connected to the air bag 7, so as to ensure that the air bag 7 and the liquid sucking and discharging button 4 can move synchronously when the gun head 2 is replaced, and the positions of the two are always corresponding to each other, wherein the sliding connection can be selected as the sliding between the fixture block and the chute, or other conventional sliding manners in the art, and can be selected according to actual needs, which is not described herein again.

The connection modes of the parts which are not mentioned in the utility model are conventional in the field, and can be selected according to actual needs, and are not described herein again.

The above are merely preferred embodiments of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims (1)

1. A pen-holding pipette is characterized by comprising a shell, a pipette head and a pipette head withdrawing button;

a circular tube penetrates through the shell, a liquid sucking and discharging button is connected to the outer side wall of the shell in a sliding mode, and the liquid sucking and discharging button slides up and down along the outer side wall of the shell;

a liquid suction and discharge pipe is connected in the round pipe in a sliding manner, an air bag is communicated with the liquid suction and discharge pipe, the air bag is connected with the liquid suction and discharge button, and the lower end of the liquid suction and discharge pipe is connected with the gun head;

the upper end of the liquid suction and discharge pipe is sleeved with a spring, the lower end of the spring is fixedly connected to the side wall of the circular pipe, and the upper end of the spring is flush with the top end of the liquid suction and discharge pipe;

the gun head withdrawing button penetrates through the upper end of the shell, and the lower end of the gun head withdrawing button is fixedly connected with the top end of the liquid sucking and discharging pipe.

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