Liquid injection device

Abstract

The invention provides a liquid injection device. The liquid injection device is mainly composed of two liquid injection assemblies, wherein each liquid injection assembly is separately provided witha holding body, a liquid drawing unit and a liquid discharging unit, each holding body is provided with a volume-variable chamber formed inside, and each liquid drawing unit and each liquid discharging unit are separately communicated with each chamber. According to the invention, the volume of the each chamber is increased to enable the interior of each chamber to generate negative pressure, andthen liquid is injected into each chamber through each liquid drawing unit; and the volume of each chamber is reduced to enable the interior of each chamber to generate positive pressure, and then theliquid in each chamber is discharged through each liquid discharging unit. Thus, a continuous liquid injection function of the liquid injection device is realized by alternately reducing volumes of the two chambers of the two liquid injection assemblies to make the two liquid injection assemblies discharge the liquid in an alternate manner.

Description

technical field [0001] The embodiments of the present application relate to the technical field of medical devices, and in particular to a medical continuous liquid injection device. Background technique [0002] Urinary calculus is one of the most common diseases in urology, its prevalence rate is as high as 1%-20%, and it is easy to recur. Although urinary calculus is a benign disease, it may cause urinary system infection, urinary accumulation, and even damage to kidney function. Therefore, urinary calculus still poses a greater threat to human health. [0003] At present, minimally invasive treatment of urinary calculi has become a routine method for the treatment of urinary calculi. In some large medical centers in China, more than 90% of urinary calculi operations can be treated by minimally invasive methods. However, the operation itself may still cause harm to the patient, for example, the prolongation of the operation time may cause the patient to increase the risk...

AI Technical Summary

Problems solved by technology

However, the "water filling" operation requires an assistant to use a large-capacity syringe to repeatedly pump and fill water. This operation often takes a lot of time, and sometimes even requires two assistants (medical staff) to coordinate the pumping and filling actions, resulting in inconvenience. Necessary human resources are wasted and operation efficiency is reduced

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