Holmium laser ultrasonic lithotripsy and stone removal device

Abstract

The invention discloses a holmium laser ultrasonic lithotripsy and stone removal device. The device comprises a laser instrument, an ultrasonic stone removing instrument and a negative pressure control instrument, the laser instrument comprises a holmium laser host and an optical fiber, and the ultrasonic stone removing instrument comprises an ultrasonic host, a stone removing instrument handle, an energy converter installed in the stone removing instrument handle, an ultrasonic variable-amplitude probe rod fixed to the energy converter and a suction pipeline communicated with the negative pressure control instrument; a guide rod is further included; the guide rod is provided with a first channel in the axis direction, the ultrasonic variable-amplitude probe rod is mounted in the first channel; the stone removing instrument handle is fixed at one end of the guide rod; a stone removing channel is formed between the ultrasonic variable-amplitude probe rod and the inner wall of the firstchannel; and a filtering assembly is arranged at one end of the guide rod away from the stone remover handle. According to the device, calculi in the body of a patient are crushed through lasers and ultrasound, the problem that hard calculi cannot be crushed or cannot be completely crushed is solved, and the lithotripsy efficiency is improved; and by arranging the filtering assembly, large stone particles can be prevented from blocking the stone removing channel, and the stone removing efficiency is improved.

Description

technical field [0001] The invention relates to a stone removal device, in particular to a holmium laser ultrasonic lithotripsy device. Background technique [0002] Urinary system stones are the most common diseases in urology. Most patients need laparoscopic surgery for treatment. The best treatment for kidney stones with a diameter greater than 2 cm and upper ureteral stones is percutaneous nephrolithotomy. Ultrasonic lithotripsy is one of the most common minimally invasive techniques for the treatment of stones. [0003] Ultrasonic in vivo lithotripsy is through the piezoelectric ceramic sheet of the transducer in the ultrasonic in vivo lithotripsy instrument, which generates high-frequency mechanical vibration under the excitation of high-frequency electrical signals, and transmits it to the ultrasonic amplitude-changing probe rod through the transducer, so that the ultrasound can be changed High-frequency vibration occurs on the end face of the probe rod. When the vi...

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Problems solved by technology

[0005] The object of the present invention is to provide a holmium laser ultrasonic lithotripsy device to solve the problem in the prior art that only ultrasonic waves cannot be used to crush some hard stones and the crushed stones are in the process of being discharged. It is easy to block the stone clearing channel, which affects the efficiency of stone removal and increases the operation time.

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