JPS6258257B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ultrasonic diagnostic apparatus that is inserted into the body through a treatment instrument insertion hole of an endoscope.

In order to transmit and receive ultrasonic waves correctly to and from an affected area, an ultrasonic diagnostic apparatus must have an ultrasonic transmitting/receiving surface in close contact with a body wall. However, since the ultrasound transmitting and receiving surface is covered with a balloon, a synthetic resin cover, etc., it is difficult to confirm the diagnostic position and direction under visual observation using an endoscope, which poses a problem in improving diagnostic accuracy.

This invention was made based on the above circumstances, and its purpose is to provide an ultrasonic diagnostic device in which the position of an ultrasonic transmitting/receiving surface can be easily confirmed under endoscopic observation and diagnostic accuracy is improved. be.

The first embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
This will be explained with reference to the figures. In the figure, reference numeral 1 indicates a rigid scope used for abdominal examinations, etc., as an example of an endoscope.
As shown in FIG. 2, the insertion section 2 of this endoscope 1 is
Inner tubes 4 and 5 are inserted inside the outer tube 3, and the observation optical system light guide member 6 is accommodated in one inner tube 4, and the other inner tube 5 is inserted.
The interior thereof is used as a treatment instrument insertion hole 5a. Further, the gap between the outer tube 3 and the inner tubes 4 and 5 is filled with an illumination optical system light guide member 7, which transmits illumination light from a light source device (not shown). On the other hand, the light guide member 6 of the observation optical system is guided to the eyepiece 8 so that the inside of the body can be observed within a visual field α.

The ultrasonic diagnostic apparatus 10 according to the present invention is inserted into the treatment instrument insertion hole 5a. This ultrasonic diagnostic device 10 includes an elongated ultrasonic diagnostic element 11 that is inserted into the body through an endoscope 1.
and a drive operation section 12 configured separately from the diagnostic element 11. The diagnostic element 11 has an elongated rod-shaped insertion section 13 that is movably inserted into the treatment instrument insertion hole 5a, and a distal end component 14 located at the distal end of the insertion section 13.

The tip component 14 is composed of three parts: a probe part 14a that houses the ultrasonic transducer 15, a curved part 14b, and a rear end part 14c. 16 is an ultrasonic transmitting and receiving surface that transmits and receives ultrasonic waves;
A mirror 17 for directing the transmission and reception direction of the vibrator 15 toward the transmission and reception surface 16 is rotatably provided inside the transducer. As shown in FIG. 3, the curved portion 14b has a plurality of joint rings connected therein so that it can curve only in one direction on the opposite side of the ultrasonic transmitting/receiving surface 16 with a maximum curve angle of 90°. , in a free state where no external force is applied, it is straight, but when an external force from the body wall or the like is applied, it can easily elastically deform only in the one direction mentioned above.

A display section 18 for displaying the position of the ultrasonic wave transmitting/receiving surface 16 is provided on the outer surface of the probe section 14a at a position behind the ultrasonic wave transmitting/receiving surface 16. This display section 18 is displayed at a position within the field of view α of the observation optical system of the endoscope 1, as illustrated in FIG.
Various forms of the display section 18 are conceivable, including one coated with a paint that is harmless to the human body and not eluted by disinfectants such as alcohol, or a display section 18 coated with a paint of a different color. It may be composed of parts. Alternatively, the display may be performed using an erasing means having a rough surface. This display section 18 has approximately the same width as the mirror 17, and displays the position of the mirror 17.

Further, the mirror 17 is adapted to be rotated by a drive shaft 20. The drive shaft 20 is inserted through the insertion section 13 and is detachably connected to a drive shaft (not shown) of the drive operation section 12 at a connection section 21 . In addition, 22 is an ultrasonic transducer 1
5, and this signal cable 2
2 is connected via a plug 23 to a socket 24 of the drive operating section 12.

The drive operation section 12 includes a drive section 12a and a circuit section 12b. The drive section 12a is provided with a motor, a speed reducer, a rotational position detector for synchronizing with the mirror 17, etc. to rotationally drive the drive shaft 20, and the circuit section 12b is provided with a signal amplification circuit and a drive motor. In the case of a servo motor, a servo control circuit is provided. 2
5 is a switch for starting and stopping the motor, and 26 is a cord connected to a monitor device (not shown).

In the apparatus of this embodiment configured as described above, a guide tube such as a trocar (not shown) is pierced through the abdominal wall or the like, and the endoscope 1 is inserted into the abdominal cavity or the like together with the ultrasound diagnostic element 11 using the guide tube as a guide. Then, the probe section 14a is positioned at the target site while performing visual observation through an observation optical system having a field of view α. At this time, the body wall A is attached to the diagnostic element 1 as shown in Fig. 3.
1, by pressing the probe part 14a against the body wall A, the curved part 14b is elastically curved with a degree of curvature according to the angle of the body wall A. However, the ultrasound transmitting/receiving surface 16 comes into close contact with the body wall A. In this state, the drive operation unit 12
is activated to cause the vibrator 15 to oscillate ultrasonic waves, and the motor of the drive unit 12a drives the drive shaft 2.
0 and rotate the mirror 17. Then, the ultrasound waves are reflected by the mirror 17 and exit from the transmitting/receiving surface 16 to scan the body wall A, and the echo waves are input to the circuit section 12b via the signal cable 22 and monitored via the cord 26 as an ultrasound tomographic image. and transmitted to a device (not shown).

In this way, this embodiment allows visual observation, ultrasonic diagnosis, and various treatments through the treatment instrument insertion hole 5a using one endoscope, so it is possible to perform various diagnoses without piercing multiple trocars. , treatment becomes possible and the burden on the patient is reduced.

According to this embodiment, the position and orientation of the ultrasound transmitting and receiving surface 16 can be easily confirmed by viewing the display unit 18 through the observation optical system. can be brought into close contact with the patient accurately, resulting in high diagnostic accuracy.

Although the present embodiment is constructed as described above, the present invention can also be applied to a structure in which the probe portion 14a is covered with a rubber balloon 30, as shown in FIG. 4 as a second embodiment. It is possible. In this case, a display section 18 having the same gist as the display section of the first embodiment may be provided on the surface of the balloon 30.

Further, FIG. 5 shows a third embodiment of the present invention, in which a convex portion 31 formed integrally with a balloon 30 is shown.
is used as a display section. Such a convex part 3
1 may be provided directly on the probe section in the case of a probe section that does not have the balloon 30.

Further, the present invention is applicable not only to mechanical scanning type ultrasonic transducers but also to electronic scanning type ultrasonic transducers. Further, the curved portion may be configured so that the operator can perform the bending operation on the hand side using a bending operation mechanism using an operating wire or the like.

As explained above, according to the present invention, the position of the ultrasonic wave transmitting and receiving surface can be easily confirmed under visual observation using an endoscope by providing the display section on the back side of the ultrasonic wave transmitting and receiving surface in the probe section. This makes it possible to accurately bring the transmitting and receiving surface into close contact with the target site on the body wall, which is highly effective in improving diagnostic accuracy.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the present invention, FIG. 1 is a side view showing an ultrasonic diagnostic apparatus together with an endoscope, FIG. 2 is a sectional view taken along the line - in FIG. FIG. 3 is a side view of the tip when curved; FIG. 4 is a side view of the tip showing a second embodiment of the invention;
FIG. 5 is a side view of the tip of a third embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Endoscope, 5a... Treatment instrument insertion hole, 10... Ultrasonic diagnostic device, 13... Insertion part, 14a... Probing part, 1
4b...Curved part, 15...Ultrasonic transducer, 16...Ultrasonic transmission/reception surface, 18...Display part, 31...Convex part (display part), A...Body wall.

Claims (1)

[Claims] 1 A freely bendable curved section is provided at the tip of the insertion section that is inserted into the body through the treatment instrument insertion hole of the endoscope and projects forward from the distal end surface of the observation optical system, and an ultrasonic transducer is installed on the tip side of this curved section. In the ultrasonic diagnostic apparatus, a display section is provided on the outer surface of the probe section to display the position of the ultrasonic transmitting/receiving surface at a position behind the ultrasonic transmitting/receiving surface. An ultrasonic diagnostic device characterized by being installed so as to be inserted into the body.