Intelligent control backwashing constant-pressure perfusion and suction system

Abstract

The invention relates to the technical field of transurethral ureteral lithotripsy, and particularly relates to an intelligent control backwashing constant-pressure perfusion and suction system. The system is composed of a perfusion bag, a perfusion pump, an intelligent control device, a control valve, two novel attractable ureteral hard mirrors which are independent perfusion and suction channels, a negative pressure suction bottle and a central negative pressure suction device. When the system is used, the system enters a bladder cavity through the urethra and then is placed into a ureter cavity from a ureter opening along a guide wire, calculi in the ureter cavity are found, and related lithotripsy instruments are used for removing the calculi in the ureter. Water injection during an operation and negative pressure suction drainage are carried out at the same time, the drainage speed during the operation can be increased on the premise that the operation is not affected, continuouswater circulation in the operation view is formed, the good definition of the view in the operation process can be kept, the operation lithotripsy efficiency is obviously improved, the safe intra-cavity pressure set before the operation can be accurately controlled, and complications such as postoperative bacteremia, urogenic sepsis, pulmonary edema and heart failure are prevented.

Description

technical field [0001] The invention relates to the technical field of transurethral ureteral lithotripsy, in particular to an intelligently controlled backwash constant pressure perfusion and suction system. Background technique [0002] There are many treatment methods for urinary stones, including conservative treatment, traditional open surgery and minimally invasive laparoscopic surgery. With the improvement of percutaneous nephroscopy and transurethral ureteroscopy technology, holmium laser lithotripsy equipment, and the upgrade of perfusion platform, minimally invasive laparoscopic surgery has gradually replaced the traditional open surgery, and has gradually shifted to the natural cavity of the human body. The application prospect is very broad. [0003] The traditional ureteroscope injection and drainage system shares one channel, which cannot form a continuous water circulation at the front end of the ureteroscope. During the operation, gravel dust interferes with...

AI Technical Summary

Problems solved by technology

However, this device cannot intelligently control the intracavity pressure of the renal collection system on the operated side. For this reason, Chinese patent CN 103767744 B has announced a medical perfusion platform, which automatically controls the suction negative pressure through the pressure measuring device in the cavity to make the intracavity pressure Therefore, within the safety range, the operation safety is ensured, and the operation efficiency is improved through automatic suction and removal of stones. However, this platform requires the addition of a flexible ureteroscope sheath, and uses the gap between the sheath to drain water, so as to achieve continuous water injection and drainage and control the pressure of the renal pelvis within a safe range. In clinical practice, about 15%-20% of patients cannot undergo one-stage sheath placement due to ureteral stenosis and distortion, and may even cause complications such as iatrogenic injury to the ureter during the sheath placement process

Therefore, transurethral ureteroscopic lithotripsy with mirror sheath is limited in clinical practice.

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