CN201912945U - Medical burette - Google Patents

Abstract

The utility model relates to a medical burette, which can be used as a sampling burette and can also be used as an acid-base titration tube. The medical burette comprises a burette provided with scales, wherein, the upper end of the burette is respectively connected with an ear washing bulb and an air intake regulator through a Y-shaped hose. The medical burette has the advantages as follows: liquid can be absorbed conveniently after the air intake regulator is closed, the air intake regulator controls the air inflow so as to control the liquid dropping speed, and the problem that the precision is bad when a common rubber head burette is used for pipetting liquid can be overcome; in addition, a switch is arranged at the lower end of the burette, so that the problem that bubbles are generated frequently in a lower pipeline when the medical burette is used as the acid-base titration tube can also be solved, and the medical burette is more convenient to operate.

Description

a medical dropper

technical field

The utility model relates to the technical field of medical instruments, in particular to a medical dropper.

Background technique

Droppers are widely used in medical testing. In terms of sampling, an ordinary rubber dropper is generally used, which is composed of a rubber cap directly placed on a glass dropper, which can be used to absorb and transfer a small amount of liquid, but the precision of sampling is poor; in terms of titration, usually With acid or alkaline burette, the titrant can be added from the top of the burette, and air bubbles often occur in a section of the pipe at the lower end of the burette switch, which requires the operator to repeatedly tap or add liquid to eliminate the air bubbles, which is inconvenient to use.

Contents of the invention

In order to overcome the above-mentioned shortcomings, the utility model designs a medical dropper, which can be used as a sampling dropper or an acid-base burette.

The medical dropper includes a graduated dropper, and the upper end of the dropper is respectively connected with the ear washing ball and the air intake regulator through a Y-shaped hose, and the air intake volume can be controlled until the air intake is closed through the air intake regulator.

The utility model has the advantages that the liquid can be sucked conveniently after the air intake regulator is closed, and the dripping speed can be controlled by controlling the air intake volume through the air intake regulator, which overcomes the problem of poor precision in pipetting liquid with a common rubber dropper, Since there is no switch at the lower end of the dropper, it can also solve the problem that air bubbles often occur in the lower pipe when the acid-base burette is used, and the operation is more convenient.

Description of drawings

Accompanying drawing is the structural representation of the utility model.

Detailed ways

As shown in the accompanying drawings, a graduated dropper 1 is designed during the implementation of the utility model, and the upper end of the dropper is connected with the ear cleaning ball 3 and the air intake regulator 4 through the Y-shaped flexible pipe 2 respectively. When in use, first close the air intake regulator 4, squeeze the ear washing ball 3 to remove the air, then release it, suck the liquid from the lower end of the dropper into the dropper 1, and then open the air intake regulator 4 to control the air intake as required The size of the dropper 1 is connected to the atmosphere, so that the pipetting or titration operation of the liquid can be conveniently carried out.

Claims (1)

1. A medical dropper, which includes a graduated dropper (1), the upper end of the dropper (1) is connected to the ear cleaning ball (3) and the air intake regulator (4) respectively through a Y-shaped hose (2) .

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