JPH0460652B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention belongs to the field of medical equipment for diagnosis, and more particularly relates to an intracorporeal ultrasound probe having a puncture guide hole for inserting a cannula.

[Technical background of the invention and its problems]

2. Description of the Related Art Conventionally, there is an intracorporeal ultrasound probe shown in FIG. 1 for the purpose of diagnosing the prostate. That is, the conventional prostate ultrasound probe 10 shown in FIG. 1 includes a cylindrical insertion section 1 with a rounded tip, and a cylindrical insertion section 1 disposed along the circumferential direction near the tip of the insertion section 1. It consists of an ultrasonic transducer 2 and a grip part 3 (grip part) connected to the proximal end of the insertion part 1 and having a larger diameter than the insertion part 1. Further, as shown in FIG. 2, the ultrasonic transducer 2 includes an acoustic lens 4, a matching layer 5, an ultrasonic transducer 6, and a backing material (not shown in the drawing) in order from the top. The transducer 6 of the ultrasonic transducer 2 is fixedly polymerized and installed in the cylinder of the insertion section 1, and the electrodes of the transducer 6 of the ultrasonic transducer 2 are drawn out by a flexible PC board 8 on which a conductive layer 7 is printed, and the cable 9 (See FIG. 1).

By the way, in recent years, when removing tissue or body fluid from an affected area in a body cavity with a suitable puncture cannula (hereinafter referred to as a puncture needle) for diagnostic purposes, it is often necessary to simultaneously check the movement of the puncture target and the puncture needle on a display. However, there is a demand for the development of an ultrasonic probe for puncturing that can perform safer puncturing, and this requirement is no exception for ultrasound probes for prostate glands.

However, since the conventional prostate ultrasound probe has the configuration shown in FIG. 1 described above, it cannot perform puncturing and has not been able to meet the above requirements.

[Purpose of the invention]

The present invention has been made based on the above-mentioned circumstances, and it is an object of the present invention to provide an intracorporeal ultrasound probe that can perform puncturing while viewing images on a display and can contribute to improving the efficiency of diagnosis.

[Summary of the invention]

Summary of the present invention for achieving the above object includes: a gripping part, an insertion part connected to the gripping part, an ultrasonic transducer disposed near the distal end of the insertion part, and the insertion part a guide hole for puncturing that passes through the insertion section in a direction intersecting the axial direction of the insertion section from a position near the gripping section to a position near the ultrasonic transducer on the gripping section side. This is an intrabody cavity ultrasound probe.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 is a perspective view showing an embodiment of the intrabody cavity ultrasound probe according to the present invention, and FIG.
FIG.

The difference between the prostate ultrasound probe 20 shown in FIG. 3 and the conventional prostate ultrasound probe 10 shown in FIG. 1 is that the prostate ultrasound probe 20 shown in FIG. guide hole 2
1 was established. As shown in FIG. 4, the guide hole 21 is formed such that the diameter at the entrance part 21a of the puncture needle is larger than the diameter at the exit part 21b of the puncture needle, and forms a funnel shape from the entrance part 21a to the exit part 21b. However, the exit part 21b
The opening position is located near the ultrasonic transducer 2 near the proximal end of the insertion section 1. Further, the guide hole 21 is a through hole that slopes toward the distal end of the insertion portion 1 from the inlet portion 21a to the outlet portion 21b.

Incidentally, in FIG. 3, the same members as those shown in FIG. 1 are given the same reference numerals as in FIG. 1, and the explanation thereof will be omitted.

When the prostate ultrasound probe 20 is configured in this manner, the insertion section 1 is inserted from the anus for diagnostic examination of the prostate, and the puncture needle is inserted from the entrance section 21a through the guide hole 21 to the outside of the exit section 21b. In particular, while simultaneously observing the puncture target (the affected area) and the movement of the puncture needle on the display,
A safe puncture can be performed. That is, puncturing can be performed such as by inserting a puncture needle into the affected area and draining pus, sucking the released pus, resecting the affected area, or injecting antibiotics into the affected area. Further, the guide hole 21 through which the puncture needle is inserted has a funnel shape from the entrance part 21a to the exit part 21b, and the entrance part 21a is widened and the exit part 2
Since 1b is formed to be narrow, insertion of the puncture needle is easy and there is no rattling of the puncture needle.
A safer puncture can be performed.

It goes without saying that the present invention is not limited to the embodiments described above, and includes various modifications without departing from the gist of the present invention.

〔Effect of the invention〕

As explained above, by providing a guide hole for puncturing in the insertion part, the present invention enables safe puncturing while observing images on a display even in prostate diagnostic examinations, which in turn makes it more efficient. It is possible to provide an intrabody cavity ultrasound probe that can contribute to good diagnosis.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a conventional intrabody cavity ultrasound probe, FIG. 2 is a sectional view of a portion thereof, and FIG. 3 is a perspective view showing an embodiment of the intrabody cavity ultrasound probe according to the present invention. FIG. 4 is a partially cutaway sectional view showing an enlarged portion A in FIG. 3. FIG. 1... Insertion section, 2... Ultrasonic transducer, 21... Guide hole.

Claims (1)

[Claims] 1 a gripping section, an insertion section connected to the gripping section, an ultrasonic transducer disposed near the distal end of the insertion section, and an ultrasonic transducer disposed near the tip of the insertion section from a position near the gripping section to the insertion section on the gripping section side. An intrabody cavity ultrasound probe comprising a puncture guide hole extending through the insertion section in a direction intersecting the axial direction of the insertion section near the ultrasound transducer.