Novel universal medical infusion head with automatic infusion bottle changing function

Abstract

The invention relates to a novel universal medical infusion head with an automatic infusion bottle changing function. The infusion head comprises an infusion head body, two passages arranged on the infusion head body, a floater valve chamber, a liquid inlet tube and a liquid outlet tube, wherein the two passages are an air-liquid passage and a liquid passage, the top ends of the two passages are communicated into a bottle or bag, and a valve is disposed on each passage; the bottom-end opening of the air-liquid passage is formed in the top of the floater valve chamber, and the bottom-end opening of the liquid passage is formed in the liquid outlet tube; a floater with two valve rods at the top is disposed in the floater valve chamber, and a liquid outlet communicated with the liquid outlet tube is formed in the bottom of the floater valve chamber; the two valve rods on the floater respectively correspond to the valves on the two passages, and the bottom end of the floater faces directly to the liquid outlet. The novel universal medical infusion head has the advantages that the two valves are driven by one floater, and the two valves of two valve chambers are opened and closed synchronously; by the three openings of the valve chambers, floater valve movements and a liquid passage directly communicating to the liquid outlet tube, suction force in the tube is fully utilized, and pulse infusion is achieved.

Description

technical field [0001] The invention relates to an infusion device used in the medical industry, in particular to a new general-purpose medical infusion automatic liquid infusion head which can automatically change bottles and continue liquid when multiple soft bottles, multiple hard bottles or multiple 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 control of liquid and...

AI Technical Summary

Problems solved by technology

[0003] Invention patent ZL2012104089744 "A dual-channel infusion head for automatic control of liquid and gas time-sharing input". 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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