JPS62102747A - 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 [Field of Industrial Application] The present invention relates to an ultrasonic lithotripter probe used for crushing stones in a body cavity such as the bladder, urethra, or kidney using an ultrasonic transducer.

[Prior Art] Generally, it is widely known that ultrasonic waves are used to perform surgery to destroy stones in the kidneys and the like.

Conventionally, this type of ultrasonic lithotripsy probe consists of a gripping part with a built-in ultrasonic vibrator and a horn, and an insertion part which is a vibration transmission member, and the tip of the vibration transmission member of this insertion part is inserted into the body cavity. By inserting the device and vibrating it while pressing against the stone, the stone is crushed, and these crushed stone pieces are sucked together with physiological saline through the suction path from the insertion part to the grip part, and are discharged from the body. It has become.

[Problems to be Solved by the Invention] However, the above-mentioned conventional ultrasonic lithotripter probe, especially the vibration transmission member which is the insertion part, is
As disclosed in Publication No. 9, it consists of a single transmission tube, and the shape of its tip is modified in various ways to improve the stone crushing power, but it is still not possible to obtain a sufficient stone crushing effect. However, since it uses the force of a single ultrasonic vibration in the long axis direction, it is possible to drill a hole in the stone using the drill effect, but the crushing effect to destroy the stone is insufficient. There were other problems.

The present invention has been made under the above circumstances, and an object of the present invention is to provide an ultrasonic lithotripter probe that can increase stone crushing efficiency by imparting a crushing effect in addition to a drilling effect. It is in.

[Means for Solving the Problems] In order to solve the above problems, the present invention transmits the vibrations of the ultrasonic vibrator 2 built into the grip part 1 into the body cavity through the horn 3 and the vibration transmission member 6. In the ultrasonic lithotripter probe that transmits vibrations to and crushes stones, the vibration transmission member 6 is connected to at least two
The structure is made up of transmitting bodies 8°9 which are larger than a book.

[Operations] In other words, in the present invention, with the above-described configuration, the vibration transmission member 6 is formed of a plurality of transmission bodies 8 and 9 having a plurality of tubular shapes, rod shapes, or a combination thereof. Since the acoustic impedance characteristics of .9 are different from each other, the directionality, amplitude, etc. are irregular, and it is possible to apply shocks from multiple vibrations to the stone, thereby improving the crushing effect in addition to the drilling effect. This makes it possible to increase stone crushing efficiency.

[Examples] The present invention will be described below with reference to the illustrated embodiments.

1 to 3 show a first embodiment of an ultrasonic lithotripsy probe according to the present invention. That is, as shown in FIG. 1, reference numeral 1 in the figure is a gripping part, in which a Langevin-type ultrasonic transducer 2 and a horn 3 are built-in, and the ultrasonic transducer 2 is
Power is supplied to the device through a power cord 4 connected to a power source (not shown).

An insertion section 6 is connected to the tip of the grip section 1 on the horn 3 side via a connection member 5, and this insertion section 6
As shown in FIGS. 2 and 3, the connecting member 5 has a threaded part 5a that is removably threaded onto the tip of the biped gripping part 1 on the side of the horn 3, and is detached via the attachment ring 7. A first large-diameter cylindrical transmission body 8 is freely screwed onto the transmission body 8, and a second small-diameter cylindrical transmission body 9 is inserted concentrically into the inner diameter space of the transmission body 8 in a non-contact manner. It has a double pipe structure consisting of
As shown in FIG. 4, the first transmitting body 8 is designed such that the shape and length, material, thickness, etc. of each of the distal ends 8a and 9a can be varied depending on the type and shape of the stone.
is replaceable, and the second transmitting body 9 is replaceable.
The inner diameter space serves as the suction passage 10. Further, in the figure, reference numeral 11 denotes a suction passage formed in the gripping part 1, which communicates with the suction passage 10 of the insertion part 6.
It has a structure in which the small pieces of the calculus crushed through the 0.11 mm are sucked out of the body by a suction tube 12 of a suction device (not shown) and discharged.

Therefore, in the ultrasonic lithotripsy probe of the present invention described above, the insertion section 6 is inserted into the body cavity, the tip thereof is pressed against the stone, and in this state, the ultrasonic vibrator 2 in the grip section 1 is powered. When the ultrasonic vibration is generated by inserting the
The signal is transmitted to two transmitting bodies 8.9 having a tubular structure. At this time, 1. each of the transmitting bodies 8 and 9 has different acoustic characteristics, so the amplitude etc. are not the same (also, when these vibrations diverge, disturbance occurs in the vibration direction, causing vibrations in directions other than the long axis direction). ,
For example, since vibrations in the radial direction are also obtained, the directionality, amplitude, etc. of the impact force of the vibrations applied to the stone become irregular, and a sufficient stone throwing effect can be obtained. Furthermore, when the vibration is split, some vibration transmission loss occurs, but such transmission loss can be minimized if the vibrator 2 is oscillated at a frequency that matches the acoustic characteristics of the vibration transmission member 8.9. Become something.

Furthermore, since the vibration transmission members 8 and 9 are removable, the optimal stone crushing effect can be obtained by changing their tip shape, material, wall thickness, etc. depending on the type and shape of the stone. .

5 and 6 show a second embodiment of the present invention, in which two transmitting bodies 8 and 9 are vibration transmitting members of the insertion portion 6.
In this case, the small diameter transmission body 9 is made solid and only the inner diameter space of the large transmission body 8 is used as the suction passage 10. It's okay.

In addition, in the embodiments of the present invention described above, especially in the first embodiment, when the two transmitting bodies are made into a double pipe structure, they are not necessarily arranged on the same axis, but their central axes are eccentrically arranged. It may be in good condition.

[Effects of the Invention] As is clear from the above explanation, since the vibration transmission member to which ultrasonic vibrations are transmitted is formed of two or more transmitting bodies, the present invention has a structure in which the directionality, amplitude, etc. are Since it is possible to obtain irregular impact force and improve the crushing effect in addition to the conventional drill effect, it has the excellent effect of increasing the stone crushing effect.

[Brief explanation of drawings]

FIG. 1 is a schematic overall view showing the first embodiment of the ultrasonic lithotripsy probe according to the present invention, FIG. 2 is an enlarged half-sectional view of the main part of the insertion section, and FIG. 3 is the line m-■ in FIG. 2. A cross-sectional view of
FIG. 4 is a perspective view of the main part showing the tip of the insertion section, FIG. 5 is an enlarged sectional view of the main part of the insertion section showing the second embodiment of the present invention, and FIG. 6 is a line taken along the line Vl-Vl in FIG. FIG. DESCRIPTION OF SYMBOLS 1... Grip part, 2... Ultrasonic vibrator, 3... Horn, 6... Insertion part, 8.9... Transmission body, 10.11
...Suction passage.

Claims (3)

[Claims] (1) In an ultrasonic lithotripter probe that transmits the vibrations of an ultrasonic transducer built into the grip to a stone in a body cavity via a horn and a vibration transmission member to crush the stone, the vibration transmission member transmits at least two or more vibrations. An ultrasonic lithotripsy probe characterized by being formed from the body. (2) The ultrasonic lithotripsy probe according to claim 1, wherein each of the transmitting bodies has a multi-tube structure. (3) The ultrasonic lithotripter probe according to claim 1, wherein the respective transmitting bodies are arranged in parallel with each other.