Improvement of droving injector controller

Abstract

The improved dropping injector controller is a floating container with spherical film bottom and set inside the dropped medicine liquid storing cup. After the dropped medicine liquid storing cup is half filled, the container is floated inside the cup; and before the liquid is to be exhausted, the spherical film bottom will be adsorbed fast to seal the outlet of the cup, so as to block residual liquid and air from entering the blood vessel and to block blood from back flowing from blood vessel in negative pressure to the cup. Owing to the spherical film shape and the flexibility of the container bottom, the controller is reliable without being affected by shaking and inclination.

Description

technical field [0001] The present invention relates to an improvement of a drip syringe control device, especially to an improvement of a control device suitable for drip syringes, which can effectively block dripping liquid and air, and prevent blood backflow; and whether the control device is shaken or tilted, All will not be affected, but can ensure anti-dripping effect. Background technique [0002] During the injection process of the drip syringe, the syringe needs to be equipped with a control device to control the injection flow of the syringe, so that the injection drip can be output stably, and then injected through the needle; when the injection is about to be injected, in order to prevent air from entering the human body, The control device must immediately close the drip stop, and the needle must be removed from the injection site of the human body to ensure injection safety; generally speaking, the control device itself only has the function of flow control and...

AI Technical Summary

Problems solved by technology

[0007] like Figure 3A As shown, when the membrane plug d of the floating cup body 4 descends to the outlet b, since the membrane plug d is a circular plane membrane, when the injection liquid of the drip syringe is about to run out, the floating cup body 4 will Its own gravity and the dripping liquid L remaining in the cup will drop to the outlet b. At this time, the film stopper d is absorbed by the outlet b to stop the stopper, but the action of stopping the stopper will cause the film stopper d to deform into a concave and solitary shape. If multiple wrinkles d' are generated, the gap s formed at the wrinkle d' will obviously destroy the adsorption effect of the film membrane d, and as shown in the figure, the membrane sometimes cannot be completely attached to the outlet b Drops or air can still seep out of the gaps on the wall of the edge, and the automatic stopper function is not slack; what's more, no matter whether it is pushed or shaken, the incompleteness of the function caused by this shortcoming will always exist. , there is room for improvement

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