JPH0216730Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention uses a hollow horn that vibrates ultrasonically to break up stones that are clogged in secretory ducts, excretory ducts, etc. of organs, and also to This invention relates to an ultrasonic lithotripter for stones that discharges injected water and crushed stones from a patient's body through a gap between a hollow horn and a catheter covering the hollow horn.

(Conventional technology) Figure 6 shows a conventional ultrasonic lithotripter for stones (Jitsuganesho).
58-148099), 1 is an ultrasonic transducer built into the case 2 of the handpiece, and when a high frequency voltage is applied, the ultrasonic transducer 1 moves in the horizontal direction in the figure. vibrates. Reference numeral 3 denotes a water supply channel provided between the ultrasonic transducer 1 and the case 2, and the rear end of this water supply channel 3 is connected to a water supply source (not shown). Reference numeral 4 denotes a flexible hollow horn with a water supply hole 5 provided on the center line, and the rear end of the hollow horn 4 is screwed onto the tip of the ultrasonic transducer 1 [Fig. 6 b and c reference〕. Reference numeral 6 denotes a water hole drilled in the rear end of the hollow horn 4 in the radial direction, and the water supply channel 3 and the water supply hole 5 communicate with each other through the water hole 6 (see Fig. 6c). . Reference numeral 7 denotes a catheter that covers the hollow horn 4 except for its tip, and a gap 8 is provided between the catheter 7 and the hollow horn 4 (see FIGS. 6b and 6c). 9 is a drain pipe protruding from the outer circumferential wall of the tip of the case 2;
The distal end thereof communicates with the gap 8, and the rear end thereof is connected to a suction device (not shown).

In the conventional example configured as described above, first, the hollow horn 4 is inserted into the salivary duct 10 together with the catheter 7, and the tip of the hollow horn 4 is brought into contact with the salivary stone 11 that is stuck in the salivary duct 10. Next, water supply channel 3
and the hollow horn 4 and salivary stone 11 through the water supply hole 5.
Ultrasonic transducer 1 while supplying water to the contact part with
When the salivary stones 11 are vibrated and ultrasonic vibrations are applied to the salivary stones 11 through the hollow horn 4, the salivary stones 11 are crushed.If the suction device is driven, the crushed salivary stones 11 are crushed.
is discharged from the patient's body together with water through the gap 8 and the drain pipe 9.

(Problem to be solved by the invention) However, when the salivary stone 11 is crushed to a certain size, the salivary stone 11 becomes easier to move in the salivary duct 10, so the contact state between the hollow horn 4 and the salivary stone 11 is reduced. If the hollow horn 4 is forcibly pressed against the salivary stone 11 in an attempt to hold it, the salivary stone 11 may move toward the back of the salivary duct 10 (toward the right in FIG. 7) and may damage the inner wall of the salivary duct 10. There was a problem in which stones could not be crushed using an ultrasonic lithotripter. Furthermore, if an attempt is made to forcibly crush the salivary stone 11 using an ultrasonic lithotripter, the salivary stone 11 will move deep into the salivary duct 10, and forceps may be inserted into the salivary duct 10, or incisional surgery may be necessary. Since the salivary stone 11 has to be removed by doing this, there is a problem in that it causes pain to the patient.

The present invention was developed in view of the above-mentioned problems, and an object of the present invention is to provide an ultrasonic lithotripter for stones that can crush stones while being fixed to the tip of a catheter.

(Means for Solving the Problems) In the present invention, the distal end surface of the catheter is located on the distal end surface of the hollow horn, or is made to protrude slightly forward from the distal end surface of the hollow horn.

(Function) If the distal end of the catheter is located on the distal end of the hollow horn, or if it protrudes slightly forward from the distal end of the hollow horn, the distal end of the catheter may become distorted when water is sucked into the gap. It sticks to salivary stones and fixes them to the tip of the catheter.
It becomes possible to reliably crush salivary stones without pushing them deep into the salivary duct.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. Note that the same reference numerals as those in FIGS. 6 and 7 indicate the same parts.

FIG. 1 shows the configuration of an embodiment of the present invention, in which the tip surface 13 of the tube wall is formed into a round shape so that it can be easily adsorbed to the salivary stone 11, and the tube is shaped so that it comes in close contact with the hollow horn 4. A catheter 12 whose rear wall end 14 is narrowed toward the center (see Fig. 2) is used.The hollow horn 4 attached to the tip of the ultrasonic transducer 2 is inserted into the catheter 12, and the rear end 14 of the catheter 12 is narrowed toward the center. When the end portion 14 is attached to the distal end of the case 2 of the handpiece, the distal end surface 13 of the tube wall of the catheter 12
It is located on the distal end surface of the hollow horn 4 [see FIG. 1 b] or slightly protrudes forward from the distal end surface of the hollow horn 4 [see FIG. 1 c], and the position between the catheter 12 and the hollow horn 4 A gap 15 is formed therebetween. 16 is a connecting tube branched from the rear of the catheter 12, 17 is a connecting adapter for attaching the tip to the connecting tube 16 (see Figure 3), 18 is for connecting the tip to the rear end of the connecting adapter 17, and connecting the rear end to the connecting tube 16. Vacuum hose connected to a suction device (not shown).

In this embodiment configured in this way, first, the hollow horn 4 is inserted into the salivary duct 10 together with the catheter 12, and then the tip of the catheter 12 is brought into contact with the salivary stone 11 that is stuck in the salivary duct 10. When the suction device is driven, the tip of the catheter 12 is attracted to the salivary stone 11, and the salivary stone 11 is fixed to the tip of the catheter 12 while in contact with the hollow horn 4 (see FIG. 4). Next, when the ultrasonic vibrator 1 is vibrated while supplying water to the contact area between the hollow horn 4 and the salivary stone 11, the ultrasonic vibration is transmitted to the salivary stone 11 via the hollow horn 4, and the salivary stone 11 is crushed, the crushed salivary stone 11 is discharged from the patient's body together with water through the gap 8, the connection adapter 17, and the vacuum hose 18.

Incidentally, the vacuum hose 18 may be directly connected to the connecting pipe 16.

FIG. 5 shows the configuration of another embodiment of the present invention, in which a connecting pipe 21 for a vacuum hose is branched from a catheter relay pipe 20;
A conventional catheter 7 is connected to the distal end of the catheter relay tube 20, which is a branch tube integrally formed with each other, and a catheter 7 is connected to the rear end of the catheter relay tube 20, with the tube wall centered at the rear end so as to be in close contact with the hollow horn 4. A catheter 22 for connecting a hand piece that is narrowed in the direction is connected, and a vacuum hose 1 is connected to the connecting tube 21.
8 is connected.

In this embodiment configured as described above, by connecting the catheter 7 to the distal end of the catheter relay tube 20, the catheter 22 to the rear end of the catheter relay tube 20, and the vacuum hose 18 to the connecting tube 21, the above-described embodiment can be achieved. works in the same way as , but then
The catheter 7 is arranged such that the distal end surface of the catheter 7 is located on the distal end surface of the hollow horn 4 or protrudes slightly forward from the distal end surface of the hollow horn 4.
You need to adjust the length.

(Effects of the invention) As explained above, according to the invention, when water is sucked into the gap, the tip of the catheter sticks to salivary stones, and the salivary stones are fixed to the tip of the catheter. It is now possible to reliably crush stones without pushing them deep into the salivary duct, and has the effect of resolving problems such as damaging the inner wall of the salivary duct and making it impossible to crush stones with an ultrasonic lithotripter. This eliminates the need to insert forceps into the salivary duct or perform incisional surgery to remove salivary stones, which has the effect of reducing pain to the patient. Furthermore, since the waste water from the patient is taken out directly from the catheter without passing through the handpiece, the handpiece can be easily sterilized.

[Brief explanation of the drawing]

Figure 1a is a block diagram of an embodiment of the present invention, Figures 1b and c are enlarged cross-sectional views of the tip of the embodiment of the present invention shown in Figure 1a, and Figure 2 is a block diagram of the embodiment of the present invention. A sectional view of a catheter in one embodiment, FIG. 3 is a half-cut sectional view of a connection adapter in an embodiment of the present invention, and FIG. 4 is a diagram showing the usage state of one embodiment of the present invention.
Figure 5 is a configuration diagram of another embodiment of the present invention, Figure 6a
Figure 6b is a configuration diagram of a conventional ultrasonic lithotripter for stones.
is an enlarged sectional view of the tip of the conventional ultrasonic lithotripter for stones shown in FIG. 6a, and FIG. 6c is the tip of the handpiece of the conventional ultrasonic lithotripter for stones shown in FIG. 6a. FIG. 7 is an enlarged cross-sectional view of the conventional ultrasonic lithotripter for stones in use. 4...Hollow horn, 5...Water supply hole, 7, 12,
22... Catheter, 10... Salivary duct, 11...
Stone, 15...Gap, 16, 21...Connecting pipe, 1
8...Bakyum horse.

Claims (1)

[Scope of claim for utility model registration] (1) A hollow horn that vibrates ultrasonically to crush stones stuck in secretory ducts, excretory ducts, etc. of organs, and
In the ultrasonic lithotripter for stones, the water injected from the water supply hole of the hollow horn and the crushed stone are discharged from the patient's body through a gap between the hollow horn and a catheter covering the hollow horn, wherein the catheter comprises: , the tip surface thereof is located on the tip surface of the hollow horn or protrudes slightly forward from the tip surface of the hollow horn,
Ultrasonic lithotripsy for stones, characterized in that when the water is sucked into the gap, the tip of the catheter sticks to the stone, and the stone is fixed to the tip of the catheter while in contact with the hollow horn. vessel. (2) The ultrasonic lithotripter for stones as set forth in claim (1) of the utility model registration claim, characterized in that a connecting tube for connecting a vacuum hose is provided in the rear part of the catheter. .