Water vapor loop constant pressure control method and device for extracorporeal shock wave machine

Abstract

The invention relates to the technical field of extracorporeal shock wave treatment equipment in medical instruments, and discloses a water vapor loop constant pressure control method and device for an extracorporeal shock wave machine. The device comprises a main water tank body, a wave source, a third electromagnetic valve, a fifth electromagnetic valve, a fourth electromagnetic valve, a gear two-way pump, a second electromagnetic valve, a first electromagnetic valve, a water bag, a constant-pressure balance weight water tank body, a third fixed pulley, a second fixed pulley, a second floating pulley, a first floating pulley and a first fixed pulley, the main water tank body is vertically arranged, and the bottom of the main water tank body is connected with a connecting pipe in a penetrating mode. According to the water vapor loop constant pressure control method and device for the extracorporeal shock wave machine, an electric control system is simple, and the functions of water feeding, water discharging, water circulating and air exhausting can be easily achieved only by controlling the water feeding direction of one gear two-way pump and the switch combination of the electromagnetic valves; and the constant-pressure counterweight water tank body is utilized to extrude the water bag through 1:4 pressure conduction through a pulley device, so that constant pressure is perfectly realized, and the pressure conduction is more accurate.

Description

technical field [0001] The invention relates to the technical field of extracorporeal shock wave therapy equipment in medical devices, in particular to a constant pressure control method and device for a water vapor circuit of an extracorporeal shock wave machine. Background technique [0002] At present, most of the extracorporeal shock wave machines are still in manual positioning, which is cumbersome, time-consuming and labor-intensive, and the operation is too complicated when the automatic control is mature, and in actual life, the focus and the treatment field are not overlapped to achieve accurate positioning , the current so-called automatic positioning is to find the distance from the human epidermis to the treatment area through B-ultrasound, and then send the measured data to the positioning system. But usually, the water bladder wraps the focal point. At this time, if the focus is moved to the two positions measured by the B-ultrasound, the water bladder will ine...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the extracorporeal shock wave machines are still in manual positioning, which is cumbersome, time-consuming and labor-intensive, and the operation is too complicated when the automatic control is mature, and in actual life, the focus and the treatment field are not overlapped to achieve accurate positioning , the current so-called automatic positioning is to find the distance from the human epidermis to the treatment area through B-ultrasound, and then send the measured data to the positioning system. But usually, the water bladder wraps the focal point. At this time, if the focus is moved to the two positions measured by the B-ultrasound, the water bladder will inevitably squeeze the human body, and the previous treatment area will be displaced. The final result is that the focus and the treatment area do not coincide. , cannot be really used in practice, and the combination of different doctors, different patients such as the elderly, the weak, the sick and the disabled, and the severity of the disease will give patients a worse experience, and doctors also have operational risks. Existing countries The patent online publication number is CN111407360A, an invention of a water vapor circuit constant pressure control method and device for an extracorporeal shock wave machine (see the accompanying drawings figure 1 ), but it still has the following disadvantages:

[0003] 1. When moving the focus of the wave source to the position of the stone measured by the B-ultrasound, due to the absence of a constant pressure system, the water bladder squeezes the human body, resulting in a displacement of the stone position currently measured by the B-ultrasound

[0004] 2. Squeeze the patient, there is a certain risk of crushing the patient, and the user experience is poor

[0005] 3. The precise electronic control system capable of achieving constant voltage is expensive and the software control is complex

Images