Safety infusion set on basis of bubble point pressure principle

A technology of bubble point pressure and infusion set, applied in the field of medical devices, can solve the problems of entering the catheter, etc., and achieve the effects of simple manufacturing process, reduction of employment risks, and improvement of infusion safety

Inactive Publication Date: 2012-07-11
李林风
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Those skilled in the art with clinical common sense know that the infusion set will move with the hands of the nurse when changing the medicine bottle, and its effect is similar to the change of the body odor of the infusion patient. The change of the flow rate, if the flow rate suddenly increases, it will change its "slower and slower" state, thus breaking its so-called "liquid flow stops flowing" illusion in an instant, causing air to enter the catheter, so the replacement of the medicine bottle of this program It is necessary to close the regulator when changing the m

Method used

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  • Safety infusion set on basis of bubble point pressure principle
  • Safety infusion set on basis of bubble point pressure principle
  • Safety infusion set on basis of bubble point pressure principle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] figure 1 It is a typical structural diagram of a safety infusion set based on the principle of bubble point pressure. like figure 1 As shown, the infusion set comprises a puncturer 1, an air inlet 13, a dripping funnel 2, a filter medium 21 for medicinal liquid, a pipeline 3 and a regulator 4, and the filtering medium 21 for medicinal liquid is installed at the bottom of the dripping funnel 2, by The bracket 25 is fixed and sealed at the bottom of the dropping funnel 2, and the bubble point pressure of the liquid medicine filter medium 21 of the infusion set is greater than 7.85kPa and less than 25.00kPa.

[0040] like figure 1 As shown, the position of the liquid outlet 22 of the dropping funnel 2 is at least 1mm higher than the lowest point of the effective space of the inner cavity of the dropping funnel 2, and the communication mode between the dropping funnel 2 and the pipeline 3 is that one end of the pipeline 3 is inserted into the The inner cavity of the conn...

Embodiment 2

[0044] figure 2 It is a schematic diagram of another configuration of the safety infusion set based on the principle of bubble point pressure. Using this configuration can achieve the same performance as that of Embodiment 1, and also has the advantage of broadening the scope of special applications.

[0045] like figure 2 As shown, the infusion set is composed of components including a piercer 1, an air inlet 13, a drip funnel 2, an inner core 24, a liquid medicine filter medium 21, a pipeline 3 and a regulator 4, and the liquid medicine filter medium 21 It is directly sealed and installed at the bottom of the dropping funnel 2, and the pressure of the bubble point of the liquid medicine filter medium 21 of the infusion set is greater than 7.85kPa and less than 25.00kPa.

[0046] like figure 2 As shown, the position of the liquid outlet 22 of the dropping funnel 2 is at least 1 mm higher than the lowest point of the effective space in the inner cavity of the dropping fun...

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Abstract

The invention relates to the technical field of medical instruments, in particular to a safety infusion set on the basis of the bubble point pressure principle. The technical scheme includes that a liquid medicine filter medium with the bubble point value ranging from 7.85 to 25kPa is selected according to the bubble point pressure principle, infusion of liquid medicine is stopped automatically according to the characteristics of the liquid medicine filter medium when the liquid medicine in the infusion set drips off, so that air can be prevented from entering an infusion tube and safety is guaranteed. Further, an exhaust tube extending to an inner cavity of a dropper is arranged in the dropper, a filter medium capable of exhausting air but not draining liquid is arranged at the extending end of the exhaust tube, so that automatic exhaust is realized significantly and safely and the high-efficiency and safe air separation effect is realized since the infusion set is combined with the bubble point pressure principle.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a safety infusion set based on the principle of bubble point pressure. Background technique [0002] The existing infusion sets have deficiencies and risks in preventing air from entering the blood vessels to cause medical accidents and realizing exhaust gas before infusion simply and stably. Regarding the former problem of preventing air from entering blood vessels, the hundreds of technical solutions that have been proposed are more concentrated on the use of floats to block and stop the infusion. Such methods or products are complicated in terms of manufacturing process, cost or clinical use; regarding the latter To realize the problem of exhaust before infusion, earlier in 1988, the technical scheme of the dropping funnel of the Chinese patent CN 88 2 02270 U medical plastic infusion set provided a dosing pipe on the shoulder of the dropping funnel, and it was propose...

Claims

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Application Information

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IPC IPC(8): A61M5/38A61M5/165A61M5/162
Inventor 李林风陈志强王铮
Owner 李林风
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