JPS62261346A - Stone crushing apparatus - 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 [Industrial Field of Application] The present invention relates to a stone crushing device for crushing stones formed in organs such as kidneys and ureters.

[Prior Art] Various devices have been developed for crushing stones formed in body cavities such as kidneys and ureters. For example, one known method is to irradiate a stone with a laser beam emitted from a laser probe to crush the stone. However, with such means using laser light, there is a risk that the laser light may irradiate the body cavity wall and damage the body cavity wall. Therefore, it has been considered to crush the stones using high-pressure fluid. Although there is no prior art technique for crushing stones with high-pressure fluid, there is a similar prior art technique disclosed in Japanese Patent Application Laid-Open No. 59-225049. In the prior art disclosed in this publication, high-pressure fluid is ejected from a suction port by operating a control lever, and treatments such as incision and cutting are performed using the high-pressure fluid in front of the suction port.

[Problems to be solved by the invention] By the way, when such a device is used to crush stones,
When a stone is irradiated with high-pressure fluid ejected from the suction port, the stone escapes due to the pressure. Therefore, a problem arises in that the high-pressure fluid does not reliably act on the stone and cannot crush the stone.

SUMMARY OF THE INVENTION An object of the present invention is to provide a stone crushing device that can crush a stone by applying high-pressure fluid to the stone.

[Means and effects for solving the problems] This invention has the following features:
A probe 1 having a supply channel 14 through which high-pressure fluid is supplied, and a capturing means for capturing a calculus provided at a position facing a spout hole 15 at the tip of the supply channel 14 from which the high-pressure fluid is spouted. Be equipped. A high-pressure fluid is then applied to the stone while it is captured.

【Example〕

A first embodiment of the present invention will be described below with reference to FIGS. 1 and 2. The stone crushing device shown in Figure 1 is probe 1.
It is equipped with This probe 1 has an inner tube 2 and an inner tube 2.
It consists of an outer tube 3 which is slidably inserted therethrough. A first cap 4 is provided at the rear end of the outer tube 3, and a second cap 5 is provided at the rear end of the inner tube 2 and is slidable into the first cap 4. One end of a first lever 6 constituting an operating section is attached to the first cap l, and a second lever 7 is similarly attached to the seventh cap. The middle part of the first lever 6 and the middle part of the second lever 7 are pivotally connected by a support shaft 8. Further, first and second finger hooks 8.9 are formed at the other end of each lever 6.7, and a spring 11 biasing the other end in the opening direction is provided between these. It is provided.

Therefore, if the other end sides of the first and second levers 6.7 are operated in the closing direction (at this time, the one end side is also in the closing direction) against the biasing force of the spring 11, the inner tube 2 is moved to the outer tube. 3 in the forward direction.

When the first and second levers 6.7 are open, the tip of the inner tube 2 is positioned further back than the tip of the outer tube 3. Also,
The distal end surface of the inner tube 2 is formed into a tapered surface 12 with a sharp edge, and the peripheral wall of the distal end of the outer tube 3 is provided with a through hole 13 which together with the tapered surface 12 constitutes a capturing means. It is perforated.

Furthermore, a supply path 14 is formed in the inner tube 2 over its entire axial length. The tip of this supply path 14 communicates with a jet hole 15 opened in the tapered tip surface 12 of the inner tube 2, and the rear end is connected to the supply tube 16 at the second mouthpiece 5.
connected to one end of the The other end of this supply pipe 16 is connected to a high pressure fluid supply device 17. Therefore, when the supply device 17 is operated, the high-pressure fluid generated here passes through the supply pipe 16 and the supply path 14 and is ejected from the ejection hole 15 opened at the distal end surface of the inner tube 2. Further, the second cap 51 of the inner tube 2 is connected to one end of the suction tube 18 that communicates with the inside of the inner tube 2. A suction pump 19 is connected to the other end of this suction pipe 18 .

This suction pump 19 and the supply device 17 are connected to a signal line 21
electrically connected by. And supply device 1
7 is activated, the signal causes the suction pump 19 to
is also activated, and the inside of the inner tube 2 becomes negative pressure. Note that inside the inner tube 2 there is an optical viewing tube 2 having an outer diameter smaller than this inner diameter.
2 is inserted.

In order to crush a stone S formed within a body cavity using the stone crushing device having such a structure, the probe 1 is first introduced into the body cavity. Next, when the tip of the probe 1 is brought close to the calculus S under observation through the optical viewing tube 22, the calculus S is taken into the through hole 13 made in the outer tube 3. Then, the first and second levers 6.7 are biased in the closing direction to move the inner tube 2 relatively forward within the outer tube 3, and the stone S taken into the through hole 13 is removed from the through hole 13. and the tapered surface 12 of the inner tube 2. In this state, if the supply device 17 is operated to eject high-pressure fluid from the ejection hole 15 opened in the tapered surface 12,
The high-pressure fluid acts reliably on the calculus S, thereby crushing the calculus S. Also, at this time, the suction pump 19 operates in synchronization with the supply device 17. Therefore, the stone S is crushed by the high-pressure fluid and simultaneously sucked into the inner tube 2.

FIG. 3 shows a second embodiment of the invention, in which the inner tube 2 protrudes beyond the tip of the outer tube 3, and the inner tube 2 and outer tube 3
The inner surface facing the tip of the concave portion 25 a s
26 a, the first and second gripping parts 2 are shaped like crocodile mouths.
5.26 are provided, and the calculus S is held between these holding parts 25.26. In other words, the first and second holding parts 25.
26 constitutes a capturing means. Further, the supply path 14 is formed in the outer tube 3, and a jet hole 15 communicating with the tip thereof opens into the inner surface of a second clamping portion 26 provided in the outer tube 3. Therefore, the calculus S held between the first and second holding parts 25 and 26 is reliably crushed by the high-pressure fluid ejected from the ejection hole 15, as in the first embodiment. Note that a through hole 27 is bored in the inner tube 2 so that the captured state of the stone S can be observed with the optical viewing tube 22.

4 and 5 show a third embodiment of the present invention, in which the internal space of the inner tube 2 is used as a supply channel 14, and the tip thereof is a nozzle 14.
5, wires 28 were inserted between the inner tube 2 and the outer tube 3, and basket forceps 29 were connected to the tips of these wires 28.

If the stone S is taken here with the basket forceps 29 protruding forward of the outer tube 3, the wire 28
By operating the basket forceps 29 to draw them into the outer tube 3, the stone S can be held. In this state, nozzle 1
By ejecting high-pressure fluid from 5, the stone S can be reliably crushed.

In this third embodiment, instead of using the inner tube 2 and the outer tube 3, a single solid shaft member is used for the probe 1, as shown in FIG. and wire 2
A through hole 31 into which the numeral 8 is inserted may be formed. Note that this example will be referred to as the fourth example.

FIG. 7 shows a fifth embodiment of the present invention, which is a modification of the fourth embodiment, in which a supply channel 14 and a through hole 31 through which a wire 28 is passed are bored in parallel in a solid probe 1a. At the same time, the ejection hole 15 opened at the tip surface of the probe 1a is inclined toward the basket forceps 29.

FIG. 8 shows a sixth embodiment of the present invention, in which a metal tip 33 is attached to the tip of a tube-shaped probe lb, and a through hole 31 for the wire 28 and an ejection hole 15 are formed therein. This is what I did.

FIG. 9 shows a seventh embodiment of the invention, which shows the supply path 14.
A distal tip 35 with a closed distal end surface is attached to the distal end of the probe 1c on which a distal end surface is formed. This distal tip 35 is provided with an ejection hole 15 opening at its distal end surface, and a cylinder 36 is formed so as to partially communicate with the ejection hole 15 . This cylinder 36 has a piston 37 and a spring 38.
It is biased in the forward direction by a and slidably provided. A rod 38 is provided protruding from the front surface of the piston 37. This rod 38 protrudes from the distal end surface of the distal tip 35, and a holding plate 39, which together with the distal end surface of the distal tip 35 constitutes a capturing means, is attached to the protruding end. When the high-pressure fluid is supplied to the supply path 14 indicated in -1-, a part of it is ejected from the ejection hole 15 and at the same time flows into the cylinder 36, causing the piston 37 to move in the direction of the arrow against the biasing force of the spring 38a. slide in the direction. Therefore, the distal end surface of the distal tip 35 with the ejection hole 15 opened and the presser plate 3
9 can hold the calculus S, and therefore the calculus S can be reliably crushed by the high-pressure fluid ejected from the ejection hole 15.

In addition, in the first to sixth embodiments, if the capturing force is increased after capturing the calculus S by the capturing means, the calculus S can be effectively crushed in combination with the pressure of the high-pressure fluid. can.

〔Effect of the invention〕

As described above, this invention forms a supply channel through which high-pressure fluid is supplied to the probe, and also provides a trapping means for capturing stones at a position opposite to the spout hole at the tip of this supply channel. . Therefore, the stone can be safely and effectively crushed by the high-pressure fluid by applying the high-pressure fluid reliably.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a probe tip showing a first embodiment of the present invention, FIG. 2 is a schematic configuration diagram of the entire device, and FIG. 3 is a probe tip showing a second embodiment of the invention. 4 is a sectional view of the tip of the probe showing a third embodiment of the present invention. FIG. 5 is a sectional view taken along line A-A in FIG.
Figure i6 is a cross-sectional view of a probe showing a fourth embodiment of the invention, Figure 7 is a cross-sectional view of the tip of the probe showing a fifth embodiment of the invention, and Figure 8 is a sixth embodiment of the invention. FIG. 9 is a sectional view of a probe tip showing a seventh embodiment of the present invention. 1... Probe, 12... Tapered surface (capturing means),
13... Through hole (capturing means), 14 Supply path, 15-9
゜Blowout hole, 17...supply device. Applicant's representative Patent attorney Jun Tsuboi Figure 4 Figure 5 Figure 6 Figure 8

Claims (1)

[Claims] The probe includes a probe having a supply path through which high-pressure fluid is supplied, and a capturing means for capturing a stone, which is provided at a position facing a spout hole at the tip of the supply path through which the high-pressure fluid is spouted. Characteristic stone crushing device.