JPS62275445A - Ultrasonic stone crushing probe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] This invention relates to an improvement in an ultrasonic lithotripsy probe for crushing stones formed in the human body by ultrasonic vibration.

[Prior Art] Generally, an ultrasonic lithotripsy probe is provided with a gripping portion and an insertion portion connected to the gripping portion. In this case, an ultrasonic vibrator is attached to the grip portion within an exterior case. When in use, a scope with a treatment instrument insertion channel such as a laparoscope is inserted into the human body as a guide, and the insertion portion of the ultrasonic lithotripsy probe is inserted into this treatment instrument insertion channel. Ultrasonic vibrations generated from an ultrasonic vibrator in the gripping part are transmitted to the distal end side of the insertion part, and the stone is crushed by the vibration crushing force. Further, the insertion portion of the ultrasonic lithotripsy probe is formed by a vibrator, and an external suction tube is connected to a suction hole formed inside the pipe via a suction port body. Then, the stone fragments crushed by the ultrasonic lithotripter probe are sucked together with physiological saline into the suction hole of this insertion part, and are expelled from the suction hole into the body cavity through the suction port body and the suction tube. There is.

[Problems to be Solved by the Invention] In the case of the conventional structure, during use of the ultrasonic lithotripter probe, the resonant frequency (20-odd KHz) of the ultrasonic vibrator in the grip
) Sub-resonances such as 1/2, 1/4 etc. generate audible sounds, and there is a problem in that the vibration sound of the ultrasonic transducer becomes noisy.

Therefore, there was a risk that the user would experience problems such as hearing loss.

This invention provides safe ultrasonic lithotripsy that prevents the audible sound caused by the vibration of the ultrasonic vibrator inside the grip from leaking to the outside of the grip during use, and prevents the user from hearing loss or other problems. The purpose is to provide a probe.

[Means for Solving the Problems] The present invention provides an ultrasonic transducer 5 in the exterior case 4 of the grip portion 2.
A sound absorbing material 23 is disposed inside the outer case 4 to absorb sound generated from the outside.

[Effect 1] During use, the sound generated from the ultrasonic vibrator 5 inside the grip rlj part 2 is absorbed by the sound absorbing material 23, and the sound generated from the ultrasonic vibrator 5 inside the outer case 4 is transmitted to the outside of the outer case 4. This is to prevent leakage.

[Example code] Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment of the present invention. Fig. 1 shows the schematic structure of the main parts of the ultrasonic lithotripsy probe 1, in which 2 is the grip part of the ultrasonic lithotripsy probe, 3
is an insertion section connected to this grip section 2. in this case,
The insertion part 3 is formed by a vibrator, and a suction hole 3a is formed inside this pipe. In addition, the grip part 2
For example, a Langevin type vibrator 5 is housed inside an exterior case 4. This Langevin type oscillator 5 has 2
It is formed by two piezoelectric cords 6, two electrode plates 7, an insulating material 8, a front metal block 9, and a rear metal block 10. A horn 11 is attached to the front metal block 9.
are integrally provided, and a suction path 1 is provided in the axial center of the front metal block 9 and the rear metal block 10 in the axial direction.
A bolt 13 having a diameter of 2 is screwed. This bolt 1
A nut 14 is screwed onto the threaded end of the bolt 13, and a cylindrical portion 15 is integrally provided at the end of the bolt 13. This cylindrical portion 15 has a gasket 1 that seals between the rear wall 16 of the exterior case 4 and the end of the bolt 13.
7 is fitted, and the tip of the cylindrical portion 15 passes through a screw hole 18 bored in the rear wall 16 and projects to the outside. This cylindrical portion 15 has an O ring 1.
The suction port body 20 is fitted through 9.19. Furthermore, the proximal end 21 of the suction port body 20 is screwed into the punch hole 18. Further, a suction tube 22 connected to a suction pump (not shown) is connected to this suction port body 20.

On the other hand, a sound absorbing material 23 made of foamed urethane, for example, is fixed to the inner surface of the exterior case 4 of the grip F9 portion 2. The sound absorbing material 23 absorbs the sound generated from the ultrasonic vibrator 3 inside the outer case 2 while the ultrasonic lithotripter probe 1 is in use.

In addition, the connection part of the grip part 2 with the insertion part 3 has 'jI
As shown in FIG. 2, a large diameter portion 24 having a large outer diameter is formed. Furthermore, a female threaded portion 25 is formed on the inner circumferential surface of this large diameter portion 24 . Further, a cylindrical screw member 26 is fitted into the base end portion of the insertion portion 3 . This screw member 2
A male threaded portion 27 is formed on the outer peripheral surface of the grip portion 6 , and this male threaded portion 27 is screwed onto the female threaded portion 25 of the grip portion 2 .

Note that FIG. 3 shows a clogging removal device 28 for removing clogging in the suction hole 3a of the insertion portion 3 of the ultrasonic lithotripter probe 1. This clog removing device 28 is provided with a cylindrical exterior member 29. This exterior member 29 is made of a synthetic resin material such as modified polyphenylene oxide (PPO). In addition, this exterior member 2
A metal plate 30 made of stainless steel or the like is fixed to the inner bottom surface of the housing 9 .

Next, the operation of the above configuration will be explained. First, when using the ultrasonic lithotripsy probe 1, a scope with a treatment instrument insertion channel such as a laparoscope is inserted into the human body as a guide, and the insertion portion 3 of the ultrasonic lithotripsy probe 1 is inserted into this treatment instrument insertion channel. . By applying a driving voltage from the power supply to the piezoelectric element 6, ultrasonic vibrations are generated in the Langevin type vibrator 5, and this vibration is transmitted to the horn 1.
1, and the pipe (transmission pipe) of the insertion section 3.
is transmitted to the tip via the Therefore, when the distal tip of the insertion section 3 that vibrates ultrasonically is pressed against a stone, the stone is crushed by the crushing force of the vibration. Furthermore, the stone fragments crushed by the ultrasonic lithotripter probe 1 are sucked together with physiological saline into the suction hole 3a of the insertion section 3, and are extracted from the body cavity through the suction port 20 and the suction tube 22. Exclude. In addition, the exterior case 4 of the grip portion 2
Since the sound absorbing material 23 is disposed on the inner surface of the probe 1, the sound generated from the ultrasonic vibrator 5 in the exterior case 4 of the grip part 2 can be absorbed by the sound absorbing material 23 while the ultrasonic lithotripter probe 1 is in use. can. Therefore, it is possible to prevent the sound generated from the ultrasonic transducer 5 inside the outer case 4 from leaking to the outside of the outer case 4, thereby preventing the user from hearing loss or other problems, and improving safety. You can improve your performance.

Further, a large diameter portion 24 having a large outer diameter is formed at the connection portion of the grip portion 2 with the insertion portion 3, and a female thread portion 25 is formed on the inner peripheral surface of this large diameter portion 24. A male threaded portion 27 is formed on the outer circumferential surface of the threaded member 26 fitted to the proximal end of the insertion portion 3, and this male threaded portion 27 is screwed into the female threaded portion 25 of the gripping portion 2, so that the gripping portion 26 can be easily gripped. The strength of the connecting portion between the holding portion 2 and the insertion portion 3 can be increased to make it less likely to break, and durability can be improved.

Furthermore, if the suction hole 3a of the insertion section 3 becomes clogged with fragments of crushed stones while the ultrasonic lithotripter probe 1 is in use, the tip of the insertion section 3 is inserted into the exterior member 29 of the blockage removal device 28. Then, the Langevin type vibrator 5 is caused to generate ultrasonic vibration while being lightly pressed against the metal plate 30. In this case, random vibrations are generated in the insertion section 3 via the metal plate 30, and this vibration acts on the stone fragments etc. stuck in the suction hole 3a, so the stone fragments etc. are further crushed and suctioned. The blockage in the hole 3a is removed.

Further, FIG. 4 shows a second embodiment of the present invention. In this case, a large number of corrugated concavo-convex portions 31 are formed on the inner surface of the exterior case 4, and a sound absorbing material 23 is adhered to the surface of these concavo-convex portions 31.

In this case, the surface area of the sound absorbing material 23 can be increased, and the sound absorbing effect of the sound absorbing material 23 can be further enhanced.

Furthermore, FIG. 5 shows a third embodiment of the present invention. This consists of an outer case 4 and a Langevin type vibrator 5.
A sound absorbing material 23 is filled in the space between the two, and a Langevin type vibrator 5 is embedded within the sound absorbing material 23.

It should be noted that the present invention is not limited to the above embodiments. For example, the sound absorbing material 23 may be formed of foamed rubber such as a neobrass tarn, glass wool, or the like. Alternatively, the sound-absorbing material 23 may be formed into a temporary shape, and the sound-absorbing material 23 may be wound around the surface of the Langevin type vibrator 5. Furthermore, it goes without saying that various other modifications can be made without departing from the gist of the invention.

[Effects of the Invention] According to the present invention, since the sound absorbing material that absorbs the sound generated from the ultrasonic transducer in the outer case is provided in the outer case, the vibration of the ultrasonic transducer in the grip part is suppressed during use. There is no risk of audible sounds leaking to the outside of the grip, and it is possible to prevent problems such as hearing loss to the user and improve safety.

[Brief explanation of drawings]

1 to 3 show a first embodiment of the present invention, in which FIG. 1 is a vertical sectional view showing a schematic configuration of the main parts of an ultrasonic lithotripter probe, and FIG. 2 is a gripping part and an insertion FIG. 3 is a longitudinal sectional view showing the blockage removal device; FIG. 4 is a longitudinal sectional view of the main part showing the second embodiment of the present invention;
FIG. 5 is a longitudinal sectional view of an ultrasonic lithotripsy probe showing a third embodiment of the present invention. 2... Grip portion, 4... Exterior case, 5... Langevin type vibrator (ultrasonic vibrator), 23... Sound absorbing material.

Claims (2)

[Claims] (1) An ultrasonic lithotripter probe in which an ultrasonic vibrator is mounted inside an exterior case, characterized in that a sound absorbing material for absorbing sound generated from the ultrasonic vibrator is disposed inside the exterior case. Sonic lithotripsy probe. (2) The exterior case according to claim 1, wherein a large number of uneven parts are formed on the inner surface, and a sound absorbing material is pasted on the surface of these uneven parts. Sonic lithotripsy probe.