Laser and ultrasonic combined lithotripsy system

Abstract

The invention discloses a laser and ultrasonic combined lithotripsy system. The system comprises a hollow probe rod, wherein an annular ultrasonic generator is arranged in an inner cavity of the proberod, a laser generator is arranged in the annular ultrasonic generator, an adsorption tube is arranged at the bottom of the ultrasonic generator, a video probe is arranged on one side of the adsorption tube, a cleaning fluid tube is arranged on the other side, a hose is fixedly connected with one end of the probe rod, an input optical fiber and an output optical fiber are arranged in an inner cavity of the hose, a comprehensive controller is arranged at one end of the hose, and a holding rod is arranged on one side of the comprehensive controller. The system adopts multi-purpose design and iscompact and reasonable in structure and convenient to use, the adsorption rate of pulverized stone can be controlled by adjusting the vacuum degree of a negative-pressure vacuum adsorber, the detected whole stone pulverizing process can be recorded by use of the video probe, and signals are transmitted to a PC terminal to facilitate observation and analysis by doctors.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a laser combined with ultrasonic lithotripsy system. Background technique [0002] Today, with the rapid economic development, the pace of people's life is accelerating, the diet structure is changing, and the incidence of stone disease is on the rise. The existing medical equipment for stone treatment mainly includes laser lithotripter and ultrasonic lithotripter. At present, most products in laser lithotripters use holmium laser output with a pulse width between 200-600 microseconds. The peak power of the laser generator directly affects the treatment effect of the instrument. Usually, the output peak power is on the order of hundreds of watts. But for dense giant stones, its peak power is far from enough, and the lithotripsy effect is poor; for non-surgical ultrasonic lithotripters, most of them currently use analog circuits to achieve automatic frequency tracking, which has ...

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Problems solved by technology

At present, most products in laser lithotripters use holmium laser output with a pulse width between 200-600 microseconds. The peak power of the laser generator directly affects the treatment effect of the instrument. Usually, the output peak power is on the order of hundreds of watts. But for dense giant stones, its peak power is far from enough, and the lithotripsy effect is poor; for non-surgical ultrasonic lithotripters, most of them currently use analog circuits to achieve automatic frequency tracking, which has poor anti-interference and is prone to deadlock. For medical institutions, using laser lithotripsy alone will bring pain to patients, and the treatment methods are complicated, while ultrasonic lithotripsy alone can only treat part of the stones, and the treatment effect on giant stones is poor. Buying laser lithotripsy and Ultrasonic lithotripsy is bound to increase costs and bring inconvenience to treatment

Laser lithotripsy is a lithotripsy technology in the body. Its basic feature is that the laser emission source is sent to the stone in the body, and the stone is crushed by powerful laser energy. The power of ultrasonic waves is also very strong. Ultrasonic waves crush the stones of the human body. Ultrasonic waves are transmitted into the stones, and reflected waves are generated on the surface of the stones. The surface of the stones will be crushed and ruptured. When the ultrasonic waves completely pass through the stones, they are reflected again at the interface. This reflection generates tension waves. When When the intensity of the tension wave is greater than the expansion strength of the stone, the stone will rupture and the safety is high, but in the case of a larger stone, if ultrasonic lithotripsy is used, the effect will be greatly reduced

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