Numerical control system capable of performing real-time control on renal pelvis pressure in ureteroscopy based on sheath-side optical fiber pressure sensor monitoring

Abstract

The invention discloses a numerical control system capable of performing real-time control on renal pelvis pressure in ureteroscopy based on sheath-side optical fiber pressure sensor monitoring, whichcomprises an optical fiber pressure measuring system, an independent double-channel ureter leading-in sheath, a numerical control platform with a perfusion / attraction function and an intelligent terminal. In the system, a perfusion pump of a soft mirror connected with the numerical control platform enters a kidney through a main channel of the ureter leading-in sheath; an optical fiber pressure sensor enters a renal pelvis through a side channel to monitor the pressure of the renal pelvis, and both channels can be connected with negative pressure suction of the numerical control platform. According to the measured pressure feedback, the numerical control platform carries out data interaction with the intelligent terminal through wire / wireless; the intelligent terminal collects and analyzes the data in the operation, synchronously optimizes the working mode and can carry out later maintenance on the numerical control platform. The numerical control system has the advantages of real-time accurate pressure control, convenient adjustment and maintenance and the like, can effectively prevent complications such as kidney injury, serious infection and the like caused by high pressure inthe soft mirror operation, and improves the safety and the efficiency of the operation.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a numerically controlled operating system for cooperating with flexible ureteroscope surgery, measuring pressure based on an optical fiber sensor in a sheath side channel, and capable of realizing automatic real-time monitoring and controlling renal internal pressure. The system consists of a fiber optic pressure sensor and corresponding optical system, a ureteral introduction sheath with independent dual channels that can be connected to negative pressure, a numerical control platform with perfusion / suction functions, and a mobile terminal installed with acquisition and analysis client software. Background technique [0002] my country is one of the three high-incidence areas of stones in the world. Urinary calculus is a common disease in urology. In recent years, the incidence of urinary calculi has gradually increased. With the development of diagnosis and treatment technology, ...

AI Technical Summary

Problems solved by technology

These methods all have certain defects. First, due to the low propagation velocity of pressure in the liquid, the pressure measurement point has a long distance from the transducer, so the pressure data obtained by the above methods are not real-time.

Secondly, the pressure measured by methods 1-3 represents the pressure at the end of the pressure measuring tube. Because the position of the introduction sheath or ureteral catheter is not fixed during the operation, it is often displaced to the upper part of the ureter due to the operation. At this time, the pressure in the renal pelvis If it cannot be transmitted to the pressure measuring point in time, the measured pressure value may be low, so there is a position accuracy error

In extreme cases, if there is stenosis in the ureter (or ureteropelvic junction) at the distal end of the manometric tube, the error in the measured pressure value at this time will be greater, which may lead to excessively increased perfusion under misjudgment, and eventually lead to actual High pressure situation

Although method 4 nephrostomy can accurately reflect the intrarenal pressure, nephrostomy will increase the surgical trauma and may increase the risk of surgical bleeding, so it is not suitable for routine use

In addition, some authors proposed to place the fiber optic pressure sensor at the front end of the flexible ureteroscope to measure the pressure in the operation area in real time. The energy causes the temperature of the pressure measurement area to rise instantaneously, which may cause a transient increase in the liquid pressure in a small area at the front of the mirror body, causing additional shock interference to the optical fiber pressure measurement, and greatly affecting the accuracy and accuracy of the pressure measurement And the stability of the control pressure of the CNC platform

Finally, the control operation interface of these pressure control systems is mostly integrated with the host, and the adjustment parameters and control modules are relatively fixed, which is not conducive to the storage and collection of clinical scientific research data and the upgrade of firmware

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