Hydraulic transmission device, fluid infusion equipment and manufacturing methods of hydraulic transmission device and fluid infusion equipment

Abstract

The invention provides a hydraulic transmission device for fluid infusion equipment, the fluid infusion equipment and manufacturing methods of the hydraulic transmission device and the fluid infusion equipment. The fluid infusion equipment is used for applying medicine to a patient and comprises a liquid storage chamber. The hydraulic transmission device comprises a first hydraulic chamber, a second hydraulic chamber and a flow selection mechanism. The first hydraulic chamber is connected with an external power source providing driving force through a first piston, and hydraulic fluid is contained in the first hydraulic chamber. Hydraulic fluid is contained in the second hydraulic chamber. The first hydraulic chamber and the second hydraulic chamber are communicated through the flow selection mechanism, and the hydraulic fluid transfers driving force to a second piston located between the liquid storage chamber and the second hydraulic chamber so as to convey infusion fluid in the liquid storage chamber to a patient; besides, the flow selection mechanism is arranged to be capable of selecting the flow of the hydraulic fluid flowing to the second hydraulic chamber from the first hydraulic chamber so as to selectively determine the flow of the infusion fluid conveyed to the patient from the liquid storage chamber. By means of the device, the equipment and the methods, injection at multiple insulin base amounts with different flows can be provided; the size of an insulin pump can be reduced, and the patient can wear the insulin pump more conveniently.

Description

technical field [0001] The present invention relates to the field of fluid infusion for administering medicine to patients, in particular, to a hydraulic transmission device for a fluid infusion device, a fluid infusion device with the hydraulic transmission device and a manufacturing method thereof. Background technique [0002] Diabetes is a metabolic disease characterized by high blood sugar. Hyperglycemia is generally due to defective insulin secretion or impaired biological action, or a combination of both. Long-term high blood sugar in diabetic patients will lead to chronic damage and dysfunction of multiple body organs (such as eyes, kidneys, heart, blood vessels, nervous system, etc.). [0003] The clinical diagnosis of diabetes can be divided into type 1 diabetes and type 2 diabetes. Type 1 diabetes, also known as insulin-dependent diabetes, usually appears in childhood or adolescence, and is a disease that is inherited in families. Type 1 diabetes is an autoimmu...

AI Technical Summary

Problems solved by technology

Among them, the electronic insulin pump integrates basal injection and bolus injection into an infusion system, which is often complex in structure, heavy in weight, and expensive

However, the existing mechanical insulin pumps generally separate the basal injection and the bolus injection into two parallel systems, which are finally aggregated to the same infusion port for injection. Mechanical insulin pumps often directly provide push power through compressed springs. There are many moving parts, the volume is large and the accuracy is relatively poor, and often only a single flow of insulin basal injection can be provided, which is not conducive to real-time adjustment of patients according to their own diet and physical condition

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