CN2076444U

CN2076444U - Multi-row multi-head micro-pipetting device

Info

Publication number: CN2076444U
Application number: CN 90221516
Authority: CN
Inventors: 唐国泰
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-09-29
Filing date: 1990-09-29
Publication date: 1991-05-08

Abstract

The utility model relates to multi-row multi-head micro-pipetting device for laboratory use and solves the problems of the present pipetting device can not fill liquid to the multi-hole. The utility model is composed of a handle, a piston plate, springs, suction tubes and so on. The principle is a plurality of pistons of the suction tube can move up and down in the piston cavity when the hands grasp or loosen the handle. Thereby, the purpose which is a plurality of suction tubes can inhale or expel the same quantity of liquid can be achieved. The pipetting device can simultaneously filling liquid to the multi-hole on the test plate every time. The utility model enhances the accuracy of test, saves time and labors and can be directly used for wash plate.

Description

Multi-row multi-head micro-pipetting device

The utility model relates to a kind of laboratory utensil.

In tests such as biology, as tests such as immunological testing, the cultivation of micro-cell, monoclonal antibody manufacturings, breadboard adopts 40 holes plastic containers such as (10 holes * 4 rows) more.In the prior art, produce the quantitative pipettor of single head for domestic, need for every plate liquid feeding 40 times, a test need add 5 kinds of solution if check HBSAG with the EIA method, and then a plate needs liquid feeding 200 times, have only 8 and 12 pipettors abroad, but price is expensive, suction nozzle is few, and pipettor is to bad control of the time in the liquid feeding process, and is influential to result of the test.

The purpose of this utility model provide a kind of can be simultaneously to the pipettor of breadboard porous liquid feeding.Be a kind of many row's multichannel pipettors.

For achieving the above object, the solution that the utility model adopts is: a plurality of suction pipes are pressed the regularly arranged of each hole on the breadboard, the piston of suction pipe is fixed on top and has oblique gathering sill, there is straight piston plate bottom to gathering sill the centre, the plunger shaft of suction pipe is fixed on below the pressing plate, have on the pressing plate with plunger shaft in straight identical a plurality of circular holes, the arrangement of circular hole is identical with suction pipe, at pressing plate and plunger shaft junction sealing ring is housed.

The handle that top is had the hole is inserted in the laterally steering groove that is fixed on the shell, and pressing spring, the bottom of handle embeds in the oblique gathering sill of piston plate, make when handle horizontal direction move left and right, the piston plate vertical direction moves up and down, promptly when holding with a firm grip or during release handle, piston moves on down in plunger shaft, thereby realizes that a plurality of suction pipes can suck or discharge the purpose with quantity of fluid simultaneously.

Above-mentioned pipettor is equipped with push pedal, has the hole identical with suction pipe quantity in the push pedal, and push pedal directly is enclosed within on the tip of plunger shaft, behind the pipettor end of operation, pushes push pedal, the suction nozzle on the suction pipe all can be pushed, and continues to use so that change clean suction nozzle.

Advantage of the present utility model is, can improve test accuracy simultaneously to the porous liquid feeding on the breadboard at every turn, and is time saving and energy saving, and can be directly used in and wash plate.

Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail.

Fig. 1 is the internal structure schematic diagram of single ten pipettors.

The principle of pipettor shown in Figure 1 is: hold handle (3), its holddown spring (8) to two road springs (2) are located, because laterally steering groove (9), directly to the effect of gathering sill (10), oblique gathering sill (11), piston plate (4) moves vertically downward, ten pistons (5) are pushed away downwards, the air in ten plunger shaft that sealed (7) is discharged.This moment, the tip with ten plunger shaft (7) inserted in the reagent, release handle (3), because the restitution of spring (8), ten pistons (5) move up, make to produce negative pressure in ten plunger shaft (7), the reagent of same amount sucks in ten plunger shaft (7) simultaneously.There is the pipettor of reagent to insert in the breadboard in ten holes suction, hold handle (3), its holddown spring (8) to two road springs (2) are located, then the reagent in ten plunger shaft (7) is discharged in the breadboard, continue firmly to push handle (3), two road springs (2) are compressed, remaining reagent in the plunger shaft (7) all can be discharged, added the accurate of amount of reagent to guarantee.

Many row's multichannel pipettors can be produced the product of various capacity according to the capacity of plunger shaft.When the capacity of test tube on the capacity of plunger shaft and the breadboard was identical, this pipettor can be directly used in washed plate.

Claims

1, the many row's multichannel micropipettors in a kind of laboratory, it comprises handle (3), laterally steering groove (9), spring (8) and (2), piston plate (4), piston (5), plunger shaft (7), sealing ring (6), pressing plate (12), suction nozzle push pedal (13) and shell (1), it is characterized in that: laterally steering groove (9) is inserted on handle (3) top, and pressing spring (8), its underpart embeds and has on the piston plate (4) of oblique gathering sill, when handle (3) horizontal direction move left and right, piston plate (4) vertical direction moves up and down, be fixed with simultaneously a plurality of pistons (5) on piston plate (4), the arrangement in each hole is identical on the arrangement of a plurality of pistons (5) and the breadboard.

2, many row's multichannel micropipettors according to claim 1, it is characterized in that: have on the pressing plate (12) of circular hole and be fixed with and the corresponding plunger shaft of piston (5) (7), pressing plate (12) is equipped with sealing ring (6) with the junction of plunger shaft (7).

3, many row's multichannel micropipettors according to claim 1, it is characterized in that: push pedal (13) directly is enclosed within on the tip of plunger shaft (7).