CN210474031U

CN210474031U - Aseptic dropper for biological medicine

Info

Publication number: CN210474031U
Application number: CN201921192670.2U
Authority: CN
Inventors: 李星; 高玮; 陈碧云
Original assignee: Fujian Heze Biotechnology Co ltd
Current assignee: Fujian Heze Biotechnology Co ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-05-08
Anticipated expiration: 2029-07-26

Abstract

The utility model relates to the field of biochemical and medical experimental equipment, in particular to an aseptic dropper for biological medicine, which comprises a dropper tube body and a thread liquid suction cylinder, wherein the top end opening of the dropper tube body is communicated with the lower end opening of the thread liquid suction cylinder, a piston is arranged in the thread liquid suction cylinder, and a connecting rod is fixed on one side of the piston, which is far away from the dropper tube body; and one end of the connecting rod, which is far away from the piston, is provided with a threaded push rod, and the threaded push rod is connected with the threaded liquid suction barrel through threads. The utility model provides a pair of aseptic burette for biological medicine comes the removal of control piston through the mode that adopts the screw thread push rod, replaces the slip of pull formula through the mode that the screw thread removed promptly, and the volume of the accurate control burette of being convenient for gets liquid avoids because of the waste that too much caused when the accuse dynamics leads to getting liquid is not good to pull formula piston. Through the arrangement of the branch pipe and the liquid discharging cap, the liquid discharging cap is slightly rotated during liquid discharging, so that a small amount of air enters the dropper pipe body, and the effect of uniform liquid discharging is achieved.

Description

Aseptic dropper for biological medicine

Technical Field

The utility model relates to a biochemical medicine experimental device field, in particular to aseptic dropper for biological medicine.

Background

In the experimental operation process of biochemical medicine, a certain amount of liquid is often required to be transferred from one container to another container, at the moment, droppers with different volumes are required, the traditional method is that a to-be-taken liquid is absorbed by an aurilave, a sharp suction nozzle of the aurilave is sleeved on the top of a glass dropper, air in the dropper is discharged by squeezing the aurilave, so that pressure difference is formed inside and outside the dropper, the dropper absorbs a reagent, then the top of the dropper is pressed by the finger belly of an index finger, and when the dropper is moved to the position above the container to be dripped, the liquid dripping speed is controlled by slowly releasing the finger belly of the index finger.

Because the top end of the common dropper is very small, when the aurilave is used for sucking liquid, the common dropper is not easy to align with a hole of the pipette, the operation is very inconvenient, the volume of the solution sucked into the pipette is related to the extrusion degree of the aurilave, and the extrusion degree of the aurilave is difficult to accurately grasp; when the squeezing degree is not enough, the liquid level of the solution can not meet the requirement, and the operation needs to be carried out again, which causes waste of time.

In addition, when liquid is discharged, although the burette is provided with scales, the accuracy of pinching by hands is not high, namely, the fingers block the pipe orifice loosely, and in addition, the amount of the liquid dripped is influenced by the fact that hands of some operators do not shake independently due to the fact that the hands exert force for a long time, so that the difference between the amount of the liquid discharged and the required amount is large, the effect of performing an experiment is influenced, and the difficulty is increased for the whole experiment operation.

Therefore, at present, some piston type pipettes are provided, the defects caused by the ear suction balls are overcome, if the application number is CN201520567914.6, an injection type pipette is disclosed, the publication date is 2015, 12 and 02 days, the injection type pipette comprises a pipette body and an injector, the top end opening of the pipette body is detachably connected with the lower end opening of the injector through a latex tube, a branch tube is connected to the upper part of the pipette body, one end of the branch tube is communicated with the pipette body, and a rotary piston switch is arranged at the other end of the branch tube. This injection type pipette simple structure, convenient operation adopts the rotary piston switch control who sets up on the pipette branch pipe to adjust the interior solution height of pipette body, has avoided utilizing aurilave or syringe to adjust the inaccuracy of solution liquid level in the pipette among the prior art.

However, in the above technical solution using the syringe type piston, the push-pull handle needs to be pulled upwards when in use, and since the pipetting operation is performed on a table or an operation table and the pipette itself is long, the liquid with a large amount is pipetted by the way, the height of the liquid itself is constant, the pushing force is not well controlled, and the handle is easy to push over the head, so that the volume of the sucked liquid cannot be precisely controlled.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the volume of liquid sucked cannot be accurately controlled due to the fact that the force required to push a handle is not well controlled when liquid is taken in a dropper of an existing syringe piston, the sterile dropper for biological medicines comprises a dropper tube body and a threaded liquid suction cylinder, wherein an opening at the top end of the dropper tube body is communicated with a lower port of the threaded liquid suction cylinder, a piston is arranged in the threaded liquid suction cylinder, and a connecting rod is fixed on one side of the piston, which is away from the dropper tube body; and one end of the connecting rod, which is far away from the piston, is provided with a threaded push rod, and the threaded push rod is connected with the threaded liquid suction barrel through threads.

On the basis of the structure, furthermore, the outer end of the threaded push rod is fixedly connected with a rotating handle.

On the basis of the structure, furthermore, the upper part of the dropper pipe body is connected with a branch pipe, and the branch pipe and the dropper pipe body are in a communicated integrated structure.

On the basis of the structure, the tail end of the branch pipe is further connected with a liquid discharging cap in a threaded mode.

In addition to the above structure, an angle between the branch pipe and the dropper pipe body is between 30 ° and 45 °.

On the basis of the structure, a sharp suction nozzle is further arranged at the bottom of the dropper tube body, and the dropper tube body and the sharp suction nozzle are of an integral structure.

On the basis of the structure, a buffer tube is further arranged on the dropper tube body, the buffer tube is positioned below the branch tube, and the diameter of the buffer tube is larger than that of the dropper tube body.

On the basis of the structure, the buffer tube and the dropper tube body are both made of transparent glass materials, and the side walls of the buffer tube and the dropper tube body are provided with scale marks.

The utility model provides a pair of aseptic burette for biological medicine comes the removal of control piston through the mode that adopts the screw thread push rod, replaces the slip of pull formula through the mode that the screw thread removed promptly, and the volume of the accurate control burette of being convenient for gets liquid avoids because of the waste that too much caused when the accuse dynamics leads to getting liquid is not good to pull formula piston. Through setting up branch pipe and tapping cap, the tapping cap is gently revolved when tapping, makes a small amount of air get into the burette body, reaches the effect of moving the liquid at the uniform velocity, also can provide the accuracy of tapping simultaneously, has avoided traditional pressing the accuracy that the operation influences the volume of the liquid that drips easily because of the slight shake of experimenter's hand with the finger.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of a biomedical sterile dropper provided by the present invention;

fig. 2 is a cross-sectional view of the internal structure of the aseptic dropper for biological medicine provided by the utility model.

Reference numerals:

100 dropper tube 110 branch tube 111 liquid discharging cap

120 buffer tube 130 sharp suction nozzle 200 screw thread suction cylinder

210 piston 220 connecting rod 230 threaded push rod

240 rotating handle

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model provides an aseptic dropper for biological medicine, which comprises a dropper tube 100 and a thread liquid suction cylinder 200, wherein the top end opening of the dropper tube 100 is communicated with the lower end opening of the thread liquid suction cylinder 200, a piston 210 is arranged in the thread liquid suction cylinder 200, and a connecting rod 220 is fixed on one side of the piston 210, which is far away from the dropper tube 100; one end of the connecting rod 220, which is far away from the piston 210, is provided with a threaded push rod 230, and the threaded push rod 230 is in threaded connection with the threaded liquid suction barrel 200.

In specific implementation, as shown in fig. 1 and fig. 2, a sterile dropper for biomedical use comprises a dropper tube 100 and a threaded liquid suction tube 200, wherein an opening at the top end of the dropper tube 100 is communicated with a lower port of the threaded liquid suction tube 200, a piston 210 is arranged in the threaded liquid suction tube 200, and a connecting rod 220 is fixed on one side of the piston 210, which is far away from the dropper tube 100; the end of the connecting rod 220, which is far away from the piston 210, is provided with a threaded push rod 230, the threaded push rod 230 is in threaded connection with the threaded liquid suction barrel 200, no thread is formed on the inner wall of the threaded liquid suction barrel 200 within the moving range of the piston 210, the threaded push rod 230 can drive the piston 210 to reciprocate up and down, preferably, the outer end of the threaded push rod 230 is fixedly connected with a rotating handle 240, and the rotating handle 240 is annular and is similar to a steering wheel of an automobile, so that force application during rotation is facilitated.

When the air-purifying device is used, the threaded push rod 230 is rotated forward by rotating the handle 240, the threaded push rod 230 pushes the piston 210 to move downwards through the connecting rod 220, air in the pipe body is discharged, and negative pressure is formed; then, the bottom end of the dropper tube 100 is extended below the liquid level of a container to be used for taking liquid, the threaded push rod 230 is rotated reversely by rotating the handle 240, the threaded push rod 230 pushes the piston 210 to move upwards through the connecting rod 220, the liquid in the container enters the interior of the dropper tube 100 under the action of air pressure difference, and the volume of the liquid to be taken is controlled through the rotating length of the threaded push rod 230. After the liquid is taken out, the rotating handle 240 is rotated forward to discharge the liquid. The volume of liquid in the process of taking and discharging liquid is conveniently and accurately controlled through the fine rotation of the threaded push rod 230.

The utility model provides a pair of aseptic burette for biological medicine comes the removal of control piston through the mode that adopts the screw thread push rod, replaces the slip of pull formula through the mode that the screw thread removed promptly, and the volume of the accurate control burette of being convenient for gets liquid avoids because of the waste that too much caused when the accuse dynamics leads to getting liquid is not good to pull formula piston.

Preferably, a branch pipe 110 is connected to the upper portion of the dropper pipe body 100, and the branch pipe 110 and the dropper pipe body 100 are in a communicated and integrated structure.

In specific implementation, as shown in fig. 1 and fig. 2, a branch pipe 110 is connected to the upper portion of the burette body 100, the branch pipe 110 and the burette body 100 are in a communicated and integrated structure, and preferably, a tapping cap 111 is further screwed to the end of the branch pipe 110.

The liquid discharge cap 111 is connected with the tail ends of the branch pipes 110 through threads to achieve a sealing effect, when liquid is discharged, the liquid discharge cap 111 is slightly screwed by the thumb and the forefinger of the right hand, a small amount of air enters the dropper pipe body 100, the effect of uniform liquid discharge is achieved, meanwhile, the liquid discharge accuracy can be improved, and the problem that the accuracy of the volume of the liquid discharged is affected due to slight trembling of hands of an experimenter easily caused by the traditional finger pressing operation is avoided. Preferably, the angle between the branch pipe 110 and the burette tube 100 is 30-45 °, which is convenient for the experimenter to operate and apply force, i.e. holding the burette tube 100 in one hand to keep vertical and using the other hand to adjust the liquid discharging cap 111.

Preferably, a tip suction nozzle 130 is disposed at the bottom of the dropper tube 100, and the dropper tube 100 and the tip suction nozzle 130 are of an integral structure.

In specific implementation, as shown in fig. 1 and 2, a tip nozzle 130 is disposed at the bottom of the dropper tube 100, the dropper tube 100 and the tip nozzle 130 are integrated, and the diameter of the tip nozzle 130 is smaller than that of the dropper tube 100, so that the speed of slowing down the liquid outflow is convenient to control.

Preferably, a buffer tube 120 is further disposed on the dropper tube 100, and the buffer tube 120 is located below the branch tube 110 and has a diameter larger than that of the dropper tube 100.

Preferably, the buffer tube 120 and the dropper body 100 are made of transparent glass material, and the side walls thereof are provided with scale marks.

In specific implementation, as shown in fig. 1 and 2, the burette tube 100 is further provided with a buffer tube 120, the buffer tube 120 is located below the branch tube 110, the diameter of the buffer tube 120 is larger than that of the burette tube 100, the buffer tube 120 and the burette tube 100 are both made of transparent glass, the side walls of the buffer tube and the burette tube are provided with scale marks, the buffer tube 120 is used for preventing the threaded push rod 230 from rotating over during liquid taking, so that liquid enters the threaded liquid suction barrel 200 to cause pollution, meanwhile, the diameter of the buffer tube 120 is larger, a certain liquid storage effect is achieved, and the measuring range of the burette can be increased.

Although terms such as dropper tube, manifold, tapping cap, buffer tube, tip nozzle, threaded pipette barrel, piston, connecting rod, threaded push rod, rotating handle, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A aseptic dropper for biological medicine, which is characterized in that: the dropper comprises a dropper tube body (100) and a thread liquid suction barrel (200), wherein an opening at the top end of the dropper tube body (100) is communicated with a lower port of the thread liquid suction barrel (200), a piston (210) is arranged in the thread liquid suction barrel (200), and a connecting rod (220) is fixed on one side of the piston (210) departing from the dropper tube body (100); one end, far away from the piston (210), of the connecting rod (220) is provided with a threaded push rod (230), and the threaded push rod (230) is in threaded connection with the threaded liquid suction cylinder (200).

2. The sterile dropper for biological medicine according to claim 1, wherein: the outer end of the threaded push rod (230) is fixedly connected with a rotating handle (240).

3. The sterile dropper for biological medicine according to claim 1, wherein: the upper part of the dropper tube body (100) is connected with a branch tube (110), and the branch tube (110) and the dropper tube body (100) are in a communicated integrated structure.

4. A sterile dropper for biological medicine according to claim 3 wherein: the tail end of the branch pipe (110) is also in threaded connection with a liquid discharging cap (111).

5. A sterile dropper for biological medicine according to claim 3 wherein: the angle between the branch pipe (110) and the dropper pipe body (100) is 30-45 degrees.

6. The sterile dropper for biological medicine according to claim 1, wherein: the bottom of the dropper tube body (100) is provided with a sharp suction nozzle (130), and the dropper tube body (100) and the sharp suction nozzle (130) are of an integrated structure.

7. The sterile dropper for biological medicine according to claim 1, wherein: a buffer tube (120) is further arranged on the dropper tube body (100), the buffer tube (120) is located below the branch tube (110), and the diameter of the buffer tube (120) is larger than that of the dropper tube body (100).

8. The sterile dropper for biological medicine according to claim 7, wherein: the buffer tube (120) and the dropper tube body (100) are both made of transparent glass materials, and the side walls of the buffer tube and the dropper tube body are provided with scale marks.