Novel medical infusion pump

Abstract

The invention discloses a novel medical infusion pump. The novel medical infusion pump comprises a pump bottle, a supporting sleeve rotatably arranged in the pump bottle, a guide rod slidably arranged in the supporting sleeve, an expansion bag which is arranged in the pump bottle, defines a liquid storage space together with the supporting sleeve and the guide rod and can be switched between a contraction state and an expansion state, and a flow guide piece which is arranged in the expansion bag and corresponds to a liquid outlet, wherein one end of the flow guide piece is connected with the supporting sleeve, and the other end of the flow guide piece is connected with the inner wall of the expansion bag after being twisted. By arranging the flow guide piece, in the expanding process of the expansion bag, the flow guide piece is synchronously stretched, liquid flowing out of the liquid outlet is divided into two branches by the flow guide piece, and vortex is formed in the expansion bag after guidance by the two side faces of the flow guide piece, so that mixing of liquid medicine is promoted, the liquid medicine and normal saline can be evenly mixed when being injected, the workload of a medical staff is reduced, and the uniform mixing effect is improved.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a novel medical infusion pump. Background technique [0002] The infusion pump (analgesic pump) is a postoperative analgesic tool used in the anesthesiology department in recent years. It can maintain a timely and stable concentration of analgesic drugs in the plasma, and allows the patient to press the drug by himself to quickly enhance the effect. The treatment is more individualized, and the patient-controlled sedation is truly realized. [0003] Existing infusion pumps mainly include a pump bottle, an expansion sac, a support sleeve and a guide rod for supporting the expansion sac. When injecting liquid, first inject a mixed solution of medicinal liquid into the expansion sac, and then inject normal saline to dilute and dilate the infusion pump. The bladder expands after fluid injection and continues to maintain pressure against the fluid. Since there is no gas in the expansi...

AI Technical Summary

Problems solved by technology

Generally, after the medicine liquid and normal saline are injected into the expansion bag, the medical staff will shake them up manually, which is time-consuming and laborious, increases the workload of the medical staff, and the mixing effect is not good.

Images