CN217663410U - Continuous liquid distributor adapted to syringe - Google Patents

Abstract

The utility model relates to a continuous liquid separator adapted to an injector, wherein a liquid separating rod (2), a finger support (3) and a pre-push rod (4) are arranged outside a shell (1) of the liquid separator, and a filling groove (5) is arranged at the bottom of the outer part of the pre-push rod; the injector push rod fixing clamp (6) and the injector needle cylinder fixing part (7) are positioned in the filling groove, and the injector needle cylinder fixing part (7) is fixedly connected with the inner wall of the filling groove (5); the liquid distributor is characterized in that a slide way (8), a quantitative rack (9), a pressure spring plate (10), a stepping push rod (11) and a tension spring (12) are arranged in the liquid distributor shell (1). The utility model discloses the accessible is changed different rack and syringe fixed part and is carried out the accuracy to embedment syringe and conventional medical syringe in advance and divide the liquid, and its accuracy is higher than the manual syringe push rod operation that promotes and divides the liquid precision, has improved the accuracy of the dose of dosing.

Description

Continuous liquid distributor adapted to syringe

Technical Field

The utility model relates to a continuous knockout, concretely relates to continuous knockout that adaptation syringe used.

Background

Such as laboratories for biological, chemical, medical testing, drug development, and other biomedical related applications, it is often necessary to use pipettors to draw prescribed amounts of liquid drugs according to various laboratory protocols. The method mainly comprises the steps of sucking a certain volume of liquid medicine into a pipette tip by using a pipette, and then distributing the extracted liquid into one or more specified volumes. Or using a syringe to divide the liquid according to the scale.

However, the prior art has the following disadvantages:

1. the prior art can not directly penetrate through a rubber plug of the penicillin bottle to directly extract the liquid medicine in the penicillin bottle.

2. When the existing liquid separator extracts liquid, the matched liquid separating gun head cannot preserve liquid medicines in the gun head for a long time without pollution.

3. Accurate quantification cannot be achieved when the syringe is manually operated to carry out liquid separation according to the scale of the pipettor.

SUMMERY OF THE UTILITY MODEL

To prior art not enough, the utility model provides a but continuous knockout that adaptation that is convenient for operate was used to syringe on the market, the unable direct or safe shortcoming of carrying out the branch liquid to the liquid medicine in the injection bottle of prior art of solution has remained simultaneously and has reached high accuracy.

In order to achieve the purpose, the utility model discloses reform transform on current pipettor technique, provide following technical scheme: a continuous liquid separator adapted to be used by an injector is characterized in that a liquid separating rod, a finger support and a pre-push rod are arranged outside a shell of the liquid separator, and a filling groove is formed in the bottom of the outer part of the liquid separator; the injector push rod fixing clamp and the injector needle cylinder fixing component are positioned in the filling groove, and the injector needle cylinder fixing component is fixedly connected with the inner wall of the filling groove; the inside slide, ration rack, pressure shell fragment, step-by-step catch bar, tension spring that are equipped with of knockout casing.

Specifically, the injector push rod fixing clamp is positioned at the tail end of the quantitative rack, and the pre-push rod is connected with the quantitative rack and can control the quantitative rack to slide up and down.

Specifically, the injector push rod fixing clamp can be controlled to slide up and down through the pre-push rod.

Specifically, the middle part of the liquid separating rod is connected with the stepping pushing rod through a first rotating shaft, and the top end of the liquid separating rod is connected with the inner wall of the liquid separator shell through a second rotating shaft.

Specifically, the lower end of the pressure elastic sheet abuts against the inner side wall of the shell of the liquid distributor, and the upper end of the pressure elastic sheet is fixedly connected with the stepping push rod.

Specifically, the syringe push rod fixing clamp can press the liquid separating rod step by step to separate liquid in the syringe.

Specifically, the injector push rod fixing clamp can fix a push rod of the injector and control the injector to draw liquid through a pre-push rod.

Specifically, the pre-push rod is connected with the quantitative rack through a bolt.

Specifically, the injector push rod fixing clamp is of a clamping plate structure.

Specifically, after the pressed liquid separating rod is released, the liquid separating rod and the stepping push rod can be controlled to reset by the tension spring, so that the liquid in the injector can be continuously separated.

Preferably, a fixing clamp of the syringe outer cylinder fixing clamping groove and/or the syringe push rod ear support is arranged. The retaining clip may be a snap groove, preferably of a clip plate construction. The clamping groove can be matched with an injector to be used in a matched mode.

Preferably, two connecting rotating shafts of the liquid separating rod are in rivet structures.

Preferably, the syringe is a conventional medical syringe or a pre-filled syringe, and more preferably, the syringe is 1ml,2ml,5ml,10ml and 20ml in size.

Preferably, the pressure plate can be used for separating liquid with different volumes for injectors with different specifications by configuring different racks.

Preferably, when the pre-filling and sealing syringe is adapted, the liquid separation specification is 10 microliter, 20 microliter, 50 microliter, 100 microliter, 150 microliter and 200 microliter.

Preferably, the liquid specification is 10 microliter, 20 microliter, 50 microliter, 100 microliter, 150 microliter, 200 microliter when the liquid is matched with a 1ml syringe.

Preferably, the liquid specification is 10 microliter, 20 microliter, 50 microliter, 100 microliter, 150 microliter, 200 microliter, 300 microliter, 500 microliter when the liquid is matched with a 2ml syringe.

Preferably, the standard of the liquid is 10 microliter, 20 microliter, 50 microliter, 100 microliter, 150 microliter, 200 microliter, 300 microliter, 500 microliter and 1000 microliter when the liquid is matched with a 5ml syringe, a 10ml syringe and a 20ml syringe.

The utility model provides a continuous knockout that adaptation syringe used possesses following beneficial effect:

(1) The utility model discloses the accessible is changed different rack and syringe fixed part and is carried out the accuracy to embedment syringe and conventional medical syringe in advance and divide the liquid, and its accuracy is higher than the manual syringe push rod operation that promotes and divides the liquid precision, has improved the accuracy of the dose of dosing.

(2) When the medicine in the injection bottle is subjected to liquid separation, a rubber plug of a penicillin bottle does not need to be opened to extract the medicine liquid, and a disposable medical syringe needle can be directly used for puncturing the rubber plug to extract the medicine liquid. The risk of contamination of the remaining liquid medicine in the injection bottle can be reduced.

(3) The disposable medical syringe is used for liquid separation, so that medicines in the liquid medicine bag of the syringe can be better protected from being polluted, and the risk of liquid medicine pollution is reduced.

Drawings

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

fig. 2 is the structure schematic diagram of the liquid separator body of the utility model.

FIG. 3 is a schematic view showing the structure of the pre-push rod, the syringe push rod fixing clip and the quantitative rack of the present invention;

in the figure: 1, a shell; 2, a liquid separating rod; 3, supporting by fingers; 4, pre-pushing a rod; 5 filling the groove; 6, fixing a push rod of the injector; 7 injector syringe fixing parts; 8, a slideway; 9, a quantitative rack; 10, a pressure elastic sheet; 11 stepping a push rod; 12 a tension spring; 13 a first rotating shaft; 14 second shaft.

Detailed Description

Example 1 the present invention is a continuous dispenser configuration and method of use adapted for use with a syringe.

A continuous liquid distributor adapted to an injector comprises a liquid distributing rod, a finger support and a pre-pushing rod, wherein the liquid distributing rod, the finger support and the pre-pushing rod are arranged outside a shell of the liquid distributor; a filling groove is formed in the bottom of the outer part of the liquid separator, the injector push rod fixing clamp and the injector needle cylinder fixing part are positioned in the filling groove, and the injector needle cylinder fixing part is fixedly connected with the inner wall of the filling groove; the inside slide, ration rack, pressure shell fragment, step-by-step catch bar, tension spring that are equipped with of knockout's casing. The injector push rod fixing clamp is positioned at the tail end of the quantitative rack, and the pre-push rod is connected with the quantitative rack and controls the quantitative rack to slide up and down.

The injector push rod fixing clamp can slide up and down under the control of the pre-push rod. The middle part of the liquid separating rod is connected with the stepping push rod through a first rotating shaft, and the top end of the liquid separating rod is connected with the inner wall of the liquid separator through a second rotating shaft. The lower end of the pressure spring piece is abutted against the inner side wall of the liquid distributor, and the upper end of the pressure spring piece is fixedly connected with the stepping push rod. The injector push rod fixing clamp can press and step through the liquid separating rod to separate liquid in the injector. The syringe fixing component can fix the push rod of the syringe and control the syringe to draw liquid through the pre-push rod. The pre-push rod is connected with the quantitative rack through a bolt. After the liquid separating rod is released and pressed, the liquid separating rod and the stepping push rod can be reset under the control of the tension spring, so that the liquid in the injector can be continuously separated.

The syringe fixing part is provided with a syringe outer cylinder fixing clamping groove and a syringe ear supporting clamping groove. The clamping groove can be matched with an injector to be used in a matched mode.

When in use, the liquid medicine to be subpackaged is extracted by the injector, the gas in the injector is emptied, and the injector is arranged on the injector fixing part. The pressing plate is adjusted to the position of the push rod of the injector through the pre-push rod. The liquid separating rod is pressed, the pressing plate moves downwards, and the liquid medicine is discharged from the syringe needle.

Example 2 use of the present invention to fill a liquid charge

In practice, 100ul of liquid medicine was separated using a continuous dispenser in combination with a 2ml syringe.

The experimental method comprises the following steps: 1.8ml of the liquid medicine (the density of the liquid medicine is 1.03 g/ml) is filled in a 3ml injection bottle, a rubber plug is covered, and an aluminum plastic cover is used for rolling and sealing.

And (3) extracting the medicine in the penicillin bottle by using a 2ml specification injector, emptying bubbles, installing the bubbles on the device, and performing liquid separation accuracy test. And collecting liquid separated from the needle head part every time of pressing, and weighing and recording.

The specific experimental results are shown in the following table:

EXAMPLE 3 microbial Limit of medical fluid in Chamber of A liquid-filled syringe Using the present invention

In practice, 100ul of liquid medicine was separated using a continuous dispenser in combination with a 2ml syringe.

The experimental method comprises the following steps: 20 aseptically filled liquid medicines are divided into two groups, 10 in each group. The vaccine in the penicillin bottle is extracted by using a 2ml specification syringe under the room temperature condition in a laboratory environment, air bubbles are emptied and then are installed on the device, 100ul of liquid separation is carried out on each syringe respectively, the syringe is taken down after liquid separation, the outer sleeve of the injection needle is covered, the conventional laboratory environment is placed, and the vaccine is stored at the room temperature. The first set of samples was loaded onto the apparatus after 6 hours and the separated solutions were combined into sterile centrifuge tubes in a clean bench. The second set of samples was loaded onto the apparatus after 12 hours and the separated solutions were combined into sterile centrifuge tubes in a clean bench. Two sets of samples were tested for microbial limitations. The biological limit results show that the total number of aerobic bacteria, mold and yeast of the 6-hour sample and the 12-hour sample is less than 1cfu/ml.

Claims (10)

1. The continuous liquid distributor is matched with an injector for use, and is characterized in that a liquid distributing rod (2), a finger support (3) and a pre-push rod (4) are arranged outside a shell (1) of the liquid distributor, and a filling groove (5) is formed in the bottom of the outer part of the pre-push rod; the injector push rod fixing clamp (6) and the injector needle cylinder fixing part (7) are positioned in the filling groove, and the injector needle cylinder fixing part (7) is fixedly connected with the inner wall of the filling groove (5);

a slide way (8), a quantitative rack (9), a pressure spring plate (10), a stepping push rod (11) and a tension spring (12) are arranged inside the liquid distributor shell (1).

2. The continuous dispenser adapted to be used with a syringe according to claim 1, wherein the syringe plunger holder (6) is provided at an end of the quantitative rack (9), and the pre-plunger (4) is connected to the quantitative rack (9) and controls the up-and-down sliding of the quantitative rack (9).

3. The continuous dispenser adapted to be used with a syringe according to any one of claims 1 to 2, wherein the syringe plunger holder (6) is controlled to slide up and down by means of a pre-plunger (4).

4. Continuous dispenser adapted for use with a syringe according to any of claims 1-2, characterized in that the dispensing rod (2) is connected at its middle portion to the stepped push rod (11) via a first pivot (13) and that the dispensing rod (2) is connected at its top end to the inner wall of the dispenser housing (1) via a second pivot (14).

5. Continuous dispenser adapted for use with a syringe according to any of claims 1-2, characterized in that the pressure spring (10) rests at its lower end against the inner side wall of the dispenser housing (1) and at its upper end is fixedly connected to the step-by-step pusher rod (11).

6. Continuous dispenser adapted for use with a syringe according to any of claims 1-2, characterized in that the syringe plunger holder (6) is adapted to dispense the liquid in the syringe by a step by pressing the dispensing lever (2).

7. Continuous dispenser adapted for use with a syringe according to any of claims 1-2, characterized in that the syringe plunger holder (6) is adapted to hold the plunger of the syringe and to control the syringe for drawing fluid by means of the pre-plunger (4).

8. Continuous dispenser adapted for use with a syringe according to claim 2, characterized in that the pre-plunger (4) is connected to the dosing rack (9) by a bayonet lock.

9. Continuous dispenser adapted for use with a syringe according to any of claims 1-2, characterized in that the syringe plunger retaining clip (6) is of clip plate construction.

10. Continuous dispenser adapted for use with a syringe according to any of claims 1-2, characterized in that the dispensing rod (2) and the stepped push rod (11) are controlled to return by means of a tension spring (12) after releasing the pressed dispensing rod (2).

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