H-matic pressure control infusion pump

Abstract

The invention discloses an H-matic pressure control infusion pump which comprises a silica gel balloon. A liquid inlet and a liquid outlet are respectively formed in the two ends of the silica gel balloon. The liquid inlet is connected with an upper infusion tube. The liquid outlet is connected with a lower infusion tube. A liquid inlet connector is arranged between the liquid inlet and the upper infusion tube. An upper valve core is arranged in the liquid inlet connector. The end portion of the upper valve core is in a taper shape and abuts against and is matched with an orifice of the upper infusion tube. A plurality of upper valve core liquid passages are arranged around the valve body of the upper valve core. A liquid outlet connector is arranged between the liquid outlet and the lower liquid infusion tube. A lower valve core is arranged in the liquid outlet connector. A lower valve core central liquid passage is formed in the shaft center of the lower valve core. The end portion of the lower valve core is in a taper shape and abuts against and is matched with the liquid outlet. A plurality of valve core liquid passages are formed around the valve body of the lower valve core. An abutting spring is arranged between the valve body of the lower valve core and the lower infusion tube. The H-matic pressure control infusion pump can control the speed and the pressure of infusion in real time in the infusion process.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and specifically refers to a manual-automatic integrated pressure-controlled infusion pump for real-time control of the infusion speed and infusion pressure of liquids. Background technique [0002] In different medical situations, the requirements for infusion volume and infusion pressure are also different. For example, there is no precise requirement for the infusion volume and infusion pressure per unit time during infusion for ordinary outpatients, and some vascular activity during the operation During the infusion of drugs, it is necessary to precisely control the infusion volume per unit time. For the infusion and blood transfusion of patients with massive bleeding, certain control of the infusion pressure is required. Therefore, in order to adapt to different medical situations, different fluid infusion devices need to be adopted. [0003] Currently on the market, there are drip ...

AI Technical Summary

Problems solved by technology

Drip infusion is the infusion of liquid using the pressure generated by the natural drop of the liquid. It has the advantages of simple structure, convenient operation and low cost, but it cannot accurately control the infusion pressure of the liquid, nor can it complete the infusion of a large amount of liquid with instantaneous constant pressure. Problem: Bolus injection is to use a specific mechanical control principle to generate a uniform thrust to control the infusion of liquid. The advantage is that it can accurately control the infusion volume per unit time, but the control structure of the infusion device is complicated, the operation is cumbersome, and the cost is high. And it can only be a certain amount of liquid transmission (generally no more than 60ml), and it is impossible to infuse a large amount of liquid conveniently; while the roller infusion is to use the roller to squeeze the infusion tube to generate a certain pulse pressure to infuse the liquid , the advantage is that there is no special requirement for the amount of infused liquid, and the infusion speed can be adjusted at will. It is currently the only way to perform controlled quantitative infusion of a large amount of liquid, but when it is used for infusion, the liquid will form a pulse during transmission. Waves, unable to provide a constant infusion pressure, which will affect some specific inspection results, especially during blood transfusion, because the extrusion of the roller may destroy the tangible blood cell components in the blood

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