Venous transfusion device with driving plate type flow regulation device

Abstract

The invention discloses a venous transfusion device with a driving plate type flow regulation device. The venous transfusion device comprises a transfusion plug, an intake tube, a Murphy's drip cup, an infusion tube, the driving plate type flow regulation device, a filter and a venous infusion needle, and is characterized in that the driving plate type flow regulation device is arranged between the Murphy's drip cup and the filter; the driving plate type flow regulation device comprises an upper cover, a seal ring, a lower cover and a driving plate; the driving plate is located between the upper cover and the lower cover; a cylinder at the lower part of the driving plate is inserted in a blind hole of the lower cover; the driving plate can rotate around a center shaft of the cylinder, so as to change the superposed area between a crescent-shaped through hole slot in the middle of the driving plate and an upper cover hole. The venous transfusion device can regulate transfusion flow and is accurate in regulation, simple in structure, and convenient to operate.

Description

technical field [0001] The invention relates to a medical instrument for clinical infusion, in particular to an intravenous infusion set with a dial flow regulating device. Background technique [0002] At present, when medical personnel are doing injection therapy for wounded and sick patients, they usually use manual timing counting method to adjust the drip rate. It is unscientific and unsafe to use this method to control the drip rate. In daily life, it often occurs that the infusion rate is too fast due to the patient's own adjustment of the drip rate, or the infusion is not processed in time after the infusion is completed, the infusion blockage, etc., resulting in serious consequences. In the form of inclined rollers, its structure is simple and the manufacturing cost is low. However, during the use of this infusion regulator, it is easy to cause deformation of the infusion tube, displacement of the roller, slipping, etc., resulting in changes in drip speed, and the a...

AI Technical Summary

Problems solved by technology

[0002] At present, when medical staff give injection therapy to wounded and sick patients, they usually use manual timing counting method to adjust the drip rate. Using this method to control the drip rate is neither scientific nor safe.

In daily life, it often occurs that the infusion rate is too fast due to the patient's own adjustment of the drip rate, or the infusion is not processed in time after the infusion is completed, the infusion blockage, etc., resulting in serious consequences. In the form of inclined rollers, its structure is simple and the manufacturing cost is low. However, during the use of this infusion regulator, it is easy to cause deformation of the infusion tube, displacement of the roller, slipping, etc., resulting in changes in drip speed, and the adjustment wheel is not easy to fix stably. Location

[0003] Patents ZL03213959.4, ZL00267516.1, and ZL00136881.8 all use sensors to measure and display the number of drops, and the motor drives the control mechanism to adjust the flow rate. The system is complicated and the cost is high

Patent ZL98200544.X proposes a device for manually operating a plunger pump to control the pressure plate to squeeze the infusion tube to adjust the flow rate. This device has high requirements for operating technology and also requires manual counting and flow measurement.

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