A general-purpose medical infusion automatic liquid relay infusion head

Abstract

The present invention relates to a novel general-purpose medical infusion automatic liquid relay infusion head, which includes a main body of the infusion head, two passages arranged on the main body of the infusion head, a float valve chamber and liquid inlet and outlet pipes, wherein the two passages are air The top of the dual-purpose channel and the liquid channel are connected to the bottle bag, and valves are set on the channels; the bottom opening of the dual-purpose channel is set on the top of the float valve chamber, and the bottom end of the liquid channel is open It is arranged on the liquid outlet pipe; there is one float valve chamber, and a float ball with two valve rods on the top is arranged in the chamber, and a liquid outlet opening connected with the liquid outlet pipe is arranged on the bottom of the chamber; The two valve stems on the ball correspond to the valves on the two passages respectively, and the bottom end of the floating ball is facing the liquid outlet opening. The present invention uses a floating ball to drive two valves, so that the valves of the two valve chambers can be opened and closed synchronously; and through the three openings of the valve chambers and the movement of the floating ball valve, the liquid channel is directly connected to the design of the liquid outlet pipe , making full use of the suction force in the tube to realize pulse infusion.

Description

technical field [0001] The invention relates to an infusion device used in the medical industry, in particular to a general-purpose medical infusion automatic liquid relay infusion head capable of automatically changing bottles and continuing liquid when multi-bottle soft bottles, multi-bottle hard bottles or multi-bottle soft and hard bottles are mixed infusion. Background technique [0002] In the medical industry, continuous infusion is not common. The traditional single-bottle infusion and manual bottle replacement bring great labor intensity to medical workers, and it is easy to cause some medical accidents due to inadvertent negligence. In order to solve the above problems and realize the purpose of automatic bottle change for continuous infusion, the inventors of the present application have developed several generations of products that can realize automatic liquid succession. [0003] Invention patent ZL2012104089744 "A dual-channel infusion head for automatic contr...

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Problems solved by technology

[0003] Invention patent ZL2012104089744 "A dual-channel infusion head for automatic control of liquid and gas time-sharing input". Although the two-channel design and float control are adopted, this solution cannot be used for soft bag container infusion, because the soft bag container does not need Air intake, start infusion as long as it is connected

Because such a synchronous valve design will cause the air entering the previous valve chamber to enter the latter valve chamber through the movement groove at the bottom of the valve chamber interval, and produce two consequences. One is that the gas entering the latter valve chamber may directly enter the outlet liquid Second, even if the gas does not flow into the liquid outlet pipe but flows to the pipe opening at the top of the valve chamber, this will also affect the outflow of the liquid in the bottle at the opening, because the air pressure at the top openings of the front and rear valve chambers is equal , the liquid does not come out

[0006] To sum up, the previous generation of products cannot be used for soft bag infusion, but can only be used for hard bottle infusion, and in actual use, there is troublesome exhaust operation. When the infusion head is not inserted into the infusion bottle, use the infusion head protective cover Sealing (otherwise, gas will enter the outlet tube through the opening at the top of the infusion head) and other defects

However, the design applied to the automatic bottle change of the soft bottle cannot be used for the automatic bottle change of the hard bottle infusion at the same time.

The later generation of general-purpose products has made a breakthrough in integrating the principle of automatic bottle exchange between hard bottles and soft bottles, but the defects are also obvious, and minor changes on the original basis (such as hard connections to synchronize the valves) cannot completely solve the problem.

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