JPS6149977B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ultrasonic crushing device capable of crushing and treating, for example, bladder stones.

BACKGROUND ART Recently, therapeutic instruments have been put into practical use that use ultrasonic vibrations to destroy and remove stones in the body cavity, such as bladder stones or bile duct stones.

However, the above-mentioned treatment tool is configured such that an ultrasonic vibrator is provided on the proximal side, and the wave-breaking energy is transmitted to the stone via the rod. For this reason, diagnosis inside the body cavity using ultrasound is impossible, and an endoscope is inserted into the body cavity using a guide tube.
After confirming the location of the stone, it is necessary to insert a rod that connects to the ultrasound transducer. Therefore, it is necessary to replace the endoscope and rod, which wastes time and may cause the user to lose sight of the goal. Furthermore, since the ultrasonic vibrations are transmitted through a long rod, energy is wasted and the bond cannot be reliably broken.

This invention was made in view of the above circumstances, and its purpose is to provide an ultrasonic vibrator at the tip of the transmission shaft and generate ultrasonic waves from this ultrasonic vibrator to crush stones. The aim is to provide an ultrasonic crushing device that can

The present invention will be explained below based on an embodiment shown in the drawings. In the figure, reference numeral 1 denotes a guide tube, and a mounting portion 2 is integrally provided at the base end of the guide tube. This mounting portion 2 is provided with a clamp mechanism 3 and a water inlet body 4. Reference numeral 5 denotes a transmission shaft that can be inserted into the guide tube 1, and an ultrasonic vibrator 6 for transmitting and receiving ultrasonic waves is attached to the tip end of the transmission shaft. Also,
An operating section 7 is integrally provided at the distal end of the transmission shaft 5, and the operating section 7 is provided with a changeover switch 8. The operating portion 7 is gripped by a clamp mechanism 3 provided on the mounting portion 2 of the guide tube 1, and is held integrally with the guide tube 1. Further, the changeover switch 8 is electrically connected to an ultrasonic drive power source 10 for diagnosis and an ultrasonic drive power source 11 for treatment, e.g. stone crushing, via lead wires 9a and 9b. The ultrasonic transducer 6 can selectively generate diagnostic ultrasonic waves and stone crushing ultrasonic waves. Further, this ultrasonic transducer 6 is connected to a display device 13 such as a cathode ray tube via an amplification/detection circuit 12.
It is connected to the.

Next, a case will be described in which a stone in the bladder is crushed and removed using the ultrasonic diagnostic treatment instrument configured as described above. First, the distal opening of the guide tube 1 is closed by an appropriate means, and the guide tube 1 is inserted into the bladder lumen b through the urethra a. next,
The opening at the tip of the guide tube 1 is opened, the transmission shaft 5 is inserted into the guide tube 1, and when the ultrasonic transducer 6 protrudes from the tip of the guide tube 1, the operation section 7 is opened.
is gripped by the clamp mechanism 3. In this state, when liquid is injected from the water inlet body 4, this liquid is supplied to the bladder cavity b through the gap between the guide tube 1 and the transmission shaft 5, and the bladder cavity b expands due to the fluid pressure. . Therefore, when the ultrasound transducer 6 is connected to the diagnostic ultrasound driving power source 10 by the changeover switch 8, ultrasound is generated from the ultrasound transducer 6 and propagated into the bladder cavity b. Therefore, by scanning the ultrasonic transducer 6 along with the guide tube 1 in the bladder inner cavity b, the ultrasonic waves can be propagated throughout the bladder inner cavity b, and if a stone c is present, it will be reflected and the The reflected echo is
The ultrasonic transducer 6 receives the signal and displays it on the display device 13 via the amplification/detection circuit 12 . After finding the calculus c in this way, when the changeover switch 8 is switched to connect the ultrasonic drive power source 11 for crushing the calculus,
Ultrasonic waves for stone fragmentation are generated from the ultrasonic vibrator 6,
When this ultrasonic vibrator 6 is brought into contact with the stone c, the stone c is gradually crushed by the vibration energy and becomes granular, that is, in a state that can flow out from the urethra.

In the above embodiment, the case where a bladder stone is removed has been described, but the guide tube and the transmission shaft can be made flexible and can also be applied to the case where the guide tube and the transmission shaft are inserted into the bile duct to remove a bile duct stone during surgery. Alternatively, the tube may be retrogradely inserted into the bile duct or the like using a duodenal fiberscope, for example, using the channel of an endoscope as a guide tube.

Furthermore, although two ultrasonic drive power supplies are provided, one for diagnosis and one for treatment, it goes without saying that these may be integrated, and the changeover switch is not limited to being provided in the operating section, but may also be a foot switch. .

As explained above, in this invention, an ultrasonic transducer is provided at the tip of a transmission shaft that can be inserted into and removed from a guide tube, and ultrasonic waves are generated from this ultrasonic transducer. Since the ultrasonic vibrator can be brought into direct contact with the crusher, the crushing efficiency is improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
The figure is a partially cutaway side view, and FIG. 2 is a side view of the device in use. DESCRIPTION OF SYMBOLS 1... Guide tube, 5... Transmission shaft, 6... Ultrasonic vibrator, 11... Ultrasonic drive power source.

Claims (1)

[Claims] 1. An ultrasonic crushing device comprising a guide tube, a transmission shaft that can be inserted into and removed from the guide tube and has an ultrasonic vibrator at its tip, and an ultrasonic drive power source connected to the ultrasonic vibrator. .