Novel self-stop drip chamber with negative pressure conduction device

Abstract

The invention provides a novel self-stop drip chamber with a negative pressure conduction device. Structural design is performed on the basis of characteristics of liquid and the principle of gravity, pressure and negative pressure so that the disposable venous infusion apparatus drip chamber and a combined device can have the automatic stopping function and the negative pressure conduction function, the phenomenon that because the height of the medicine liquid level of an infusion tube in venous infusion decreases, air inflow and backflow blood return happen is eradicated, and negative pressure support is provided for an external monitoring and guarding system. Compared with other stop devices, the novel self-stop drip chamber has the advantages of being simple in structure, complete in system, good in effect and high in manufacturability; labor intensity of medical workers can be effectively reduced in clinical application, a large number of manpower resources needed for observing the infusion progress are saved, infusion management can be more standard, more intimate nursing can be achieved, and meanwhile the novel self-stop drip chamber has great economical and social benefits.

Description

technical field [0001] The invention relates to a new type of self-cutting drip funnel with a negative pressure transmission device, especially for a disposable intravenous infusion set, which can automatically stop when the liquid level of the medicine in the drip funnel of the infusion set drops, so as to prevent excessive drop of the liquid level, Phenomena such as air intake and blood return occur, and at the same time transmit negative pressure to the automatic cut-off dripping funnel. Background technique [0002] At present, there are many domestic manufacturers of disposable venous infusion sets used in the nursing of venous infusions in the medical industry, and their product structures are similar. In the past few decades, there have been thousands of patents related to the improvement of infusion sets, and most of them are related to functional improvements such as cut-off, anti-blood return, alarm, anti-bubble, anti-rolling needle, etc.; It is true that the infu...

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Problems solved by technology

[0003] As far as the patent items on the new type of infusion set that use the power of the infusion set to automatically cut off, prevent blood return, and prevent air intake, although the purpose is clear, the functions are relatively single, lack of system, and the technical solution is not mature enough. Poor manufacturability, not conducive to the application of electronic technology and other defects, resulting in the delay in the promotion and application of this type of technical invention; as for another type of electronic detection technology, external force assisted cut-off alarm, it is passed in the The method of installing electronic, gravity, magnetic and other monitoring equipment on the existing disposable intravenous infusion device can realize the automatic cut-off and alarm monitoring function of intravenous infusion. This kind of invention has advanced technology and relatively perfect scheme, which not only realizes the The automatic cut-off anti-bleed and anti-air intake function also realizes the alarm monitoring function, but it avoids the improvement of the infusion set, so that the shortcomings of the disposable venous infusion set itself cannot be solved, and the infusion set cannot be improved. And development, without electronic technology, it will not have the functions of automatic cut-off, anti-blood return, and anti-air intake; moreover, the realization of its functions depends entirely on external force, without the power of the infusion set itself, which does not meet the requirements of energy conservation and environmental protection; The improved automatic cut-off negative pressure conduction infusion set can realize the alarm monitoring function without electronic monitoring at all; therefore, it is not difficult to see that although this type of technology has been vigorously promoted, it has not been widely used so far. Reason for application

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