JPS62224339A - Ultrasonic probe device - 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 improvement in an ultrasonic probe device that performs treatments such as prostatectomy and stone destruction using ultrasonic vibrations.

[Conventional technology]

Recently, using an ultrasound probe device, prostate resection,
Treatments such as stone destruction techniques have begun to be used. As shown in Japanese Patent Application No. 60-103405, etc., this uses a structure in which an ultrasonic probe with a suction function is inserted into a sheath (guide tube).

Specifically, an ultrasonic probe has an ultrasonic transducer connected to the base of a transmission tube that can be inserted into a living body, and also has a passageway in the center of the ultrasonic transducer that communicates with the transmission tube to serve as a suction path. is used. This ultrasonic probe is mounted in a sheath together with an observation scope (rigid scope) to constitute the entire ultrasonic probe device.

In such an ultrasonic probe device, after a suction pump is connected to a suction path, a transmission tube is first guided to an affected area (prostate tissue, stone) in a living body using a sheath, and the tip is pressed against the affected area. After that, ultrasonic vibrations are applied from the ultrasonic transducer to the affected area through the transmission tube, and suction force is applied to the suction channel to fix the affected area and ablate the area with ultrasonic vibration (in the case of prostate tissue). It was destroyed (in the case of a stone), and at the same time, the excised tissue and the destroyed stone were expelled from the body from the tip of the transmission tube.

[Problem that the invention seeks to solve]

By the way, it is known that such an ultrasonic probe device uses a transmission tube with a small diameter. However,
These transmission tubes are certainly easy to insert, but because of their small diameter, it is difficult to suction and fix prostate tissue or stones at the tip, and the problem is that the area can escape due to ultrasonic vibration, making it difficult to secure , and has the problem of not being able to be treated efficiently.

The present invention was made in view of these problems, and an object of the present invention is to make it possible to easily and reliably fix a treatment site within a living body.

[Means and effects for solving the problem] In this device, an opening 11 is provided in the side wall of the distal end of the guide tube 5 that guides the insertion of the ultrasound probe 1, and the periphery of the opening 11 is used to guide the insertion of the ultrasound probe 1 into the body. The part 12 is fixed.

[Embodiment] The present invention will be described below based on a first embodiment shown in FIGS. 1 and 2. FIG. 1 shows the entire ultrasonic probe device, and 1 is an ultrasonic probe.

First, the ultrasonic probe 1 will be described. Reference numeral 2 denotes a gripping portion in which an ultrasonic transducer 3 is built-in, and numeral 4 represents a conical horn disposed on the tip side of the gripping portion 2. Ultrasonic transducer 2
Although not shown, a Langevin type is used in which a plurality of piezoelectric elements and a plurality of electrode plates are arranged alternately and sandwiched between a front metal block and a rear metal block. The front metal block and the horn 4 are connected. Further, a small-diameter transmission tube 5 is connected to the tip of the horn 4, so that the ultrasonic vibrations generated by the ultrasonic vibrator 3 can be transmitted to the tip of the transmission tube 5. Furthermore, in the center of the gripping part 2 (the center of the ultrasonic transducer 3, horn 4, etc.), there is a passage (
(not shown) is provided, and together with the lumen constitutes a suction path 5a. Then, a suction port body 6 that becomes the end of this passage
A suction pump (not shown) is connected to the transmission tube 5 via a suction tube 7, so that suction can be performed from the opening at the tip of the transmission tube 5. In other words, it constitutes a probe with a suction function. Note that 8 indicates a cable connected to the ultrasonic transducer 3. Of course, the cable 8 leads to a power supply (not shown).

On the other hand, 9 is a sheath (corresponding to a guide tube). The transmission tube 5 is inserted into the sheath 9 together with an observation scope 10 (optical viewing tube) such as a laparoscope, and is attached thereto to constitute the entire ultrasound probe device. In addition, 9a is the sheath 9
A cock for perfusing a perfusion solution (such as physiological saline) into the living body through the inside is shown.

An opening 11 is provided at the distal end of the sheath of such an ultrasonic probe device. Specifically, the opening 11 is formed by cutting out a part of the side wall of the distal end of the sheath 5, as shown in an enlarged view in FIG. I'm making you come. and,
This allows the living tissue to be fixed using the periphery of the opening 11.

Therefore, when treating the affected tissue 12 within a body cavity using such an ultrasound probe device, first, the transmission tube 5 of the ultrasound probe 1 and the observation scope 10 are inserted into the body cavity using the sheath 9.

Thereafter, as shown in FIG. 2, the distal end of the sheath 9 is guided to a target site, and the opening 11 is placed at that site. As a result, the affected tissue 12 is fixed around the periphery of the opening 11. Thereafter, by applying suction force to the ultrasonic probe 1 and also applying ultrasonic vibrations, a reliable treatment can be performed.

That is, the affected tissue 12 is attracted by the suction force and comes into contact with the probe tip. At the same time, the fixed (suctioned) affected tissue 12 is excised by ultrasonic vibrations transmitted to the tip of the transmission tube 5. Note that during such treatment, perfusion fluid (saline solution) is perfused into the living body through the cock 9a, and the resected affected tissue 12 is
The blood is discharged out of the body through the suction path 5a along with the bleeding blood.

Thus, it can be seen that the affected tissue 12 can be easily fixed by the opening 11 and the affected tissue 12 can be prevented from escaping due to vibration. As a result, the affected tissue 12 can be reliably excised, and all of the excised affected tissue 12 can be removed. Moreover, it is efficient because it is sufficient to fix the part to be sucked with the opening 11.

Further, the present invention is not limited to the first embodiment, but also applies to the second embodiment shown in FIGS. 3 to 5, the third embodiment shown in FIG. 6, and the fourth embodiment shown in FIG. You can do it like this.

In the second embodiment, an observation scope 1 is installed inside the ultrasound probe 1.
0, a water supply system 20 is provided. Specifically, the following structure is used.

That is, in the built-in structure of the observation scope 10, in addition to using a thick transmission tube 5, a hood 21 is installed around the ultrasonic transducer 3.
The grip portion 1 is configured by providing the following. And ultrasonic vibrator 3
A hole 22 communicating with the lumen of the transmission tube 5 is provided in the center of the transmission tube 5, and the observation scope 10 is inserted along the lumen and the hole 22 as shown in FIG. And this observation scope 1
0 to the connection part 23 provided at the rear end of the hood 21,
A structure that is attached to the ultrasonic probe 1 is used.

On the other hand, the water supply system 20 uses a structure in which a water supply pipe 23 is inserted into the transmission pipe 5 from its tip to the outside of the hood 21 . In addition to connecting the suction tube 24 to the hood 21, the suction tube 24 is connected to the hood 21 and the ultrasonic vibrator 3.
The probe is communicated with the inside of the transmission tube 5 through a suction opening 25 at the base of the transmission tube 5, so that tissue can be suctioned from the tip of the probe.

Such a structure does not require the sheath 9 as in the first embodiment, so it has the advantage that the diameter of the transmission tube 5 can be increased accordingly, and the efficiency of suctioning the tissue is high. Moreover, since the opening 11 is correspondingly larger, the tissue can be easily fixed and resected easily.

The third embodiment shown in FIG.
A through hole 30 is provided at a position offset from the center of the ultrasound probe 1. Then, an observation scope 10 (rigid scope) is inserted through this through hole 30, and the observation scope 10 is intended to be adjacent to the transmission tube 5.

Such a structure has the advantage that the external shape of the ultrasonic transducer 3 can be increased without any adverse effects. That is, when the outer diameter of the ultrasonic transducer 3 is increased in order to increase the amplitude of vibration in the ultrasonic probe 1, the observation scope 1 is normally placed around the ultrasonic transducer 3.
The need to bend 0 a lot makes the whole thing unnecessarily large. However, in the structure in which the observation scope 10 is inserted into the ultrasonic transducer 3, the outer diameter of the ultrasonic transducer 3 can be effectively increased since there is no need to bend the observation scope 10.

The fourth embodiment shown in FIG. 7 is a modification of the third embodiment, in which a flexible scope 35 (fiberscope) is used in place of the observation scope composed of a rigid scope.

〔Effect of the invention〕

As explained above, according to the present invention, it becomes possible to easily and reliably fix the treatment site within the living body at the periphery of the opening. As a result, efficient treatment can be achieved.

[Brief explanation of drawings]

1 and 2 show a first embodiment of the invention,
Fig. 1 is a perspective view showing an ultrasonic probe device, Fig. 2 is a sectional view showing an enlarged tip of the ultrasonic probe device, and Fig. 3 is a second view of the ultrasonic probe device of the present invention.
FIG. 4 is a sectional view 1 showing an enlarged tip of the ultrasonic probe device of the embodiment, FIG. 5 is a sectional view taken along the line A to A in FIG. The figure is a sectional view showing the main part of the third embodiment of the invention, and FIG. 7 is a sectional view showing the main part of the fourth embodiment of the invention. 1... Ultrasonic probe, 5a... Suction path, 9...
Sheath (guide tube), 11...opening. Applicant's representative Patent attorney Jun Tsuboi Figure 2 Figure 3 Figure 4 Figure 6

Claims (2)

[Claims] (1) An ultrasonic probe that transmits ultrasonic vibrations to the tip,
An ultrasonic probe device comprising: a guide tube for inserting the ultrasonic probe into a living body; a suction path communicating with the inside of the guide tube; and an opening provided in a side wall of the distal end of the guide tube. . (2) The ultrasonic probe device according to claim 1, wherein the suction path is provided in the ultrasonic probe.