JPH0810261A - Guiding tube for intra-celom ultrasonic probe - Google Patents

Abstract

PURPOSE:To provide a guiding tube for an intra-celom ultrasonic probe with which pincers for treatment are usable in the case of using of an endscope without contact of this intra-celom ultrasonic probe with a living body and observation by the endoscope is possible. CONSTITUTION:One side of the cylindrical tube 3 into which the intra-celom ultrasonic probe 120 is insertable is covered with an elastic thin-film body 5 and the other side is provided with an intra-celom ultrasonic probe insertion port 7 into which the intra-celom ultrasonic probe 120 is insertable and which has such an oil seal 7a as to attain a water-tight state and a water injection port 9 from which an acoustic medium is injectable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic probe in a body cavity, and more particularly to a guide tube for an ultrasonic probe in a body cavity, which enables ultrasonic diagnosis in the body cavity without attaching a balloon to the tip of an endoscope. Regarding

[0002]

As is well known, in order to diagnose the inside of a body cavity by using a forceps hole of an endoscope with an ultrasonic probe inside the body cavity, the ultrasonic transducer is mechanically or electronically operated by a radial or linear operation. There is a method for obtaining an ultrasonic image.

When the diagnosis is performed by this method, there is a possibility that the ultrasonic probe in the body cavity may come into direct contact with the examination site or blood, so that infection between patients becomes a problem. To prevent this infection, it is possible to sterilize and disinfect the body cavity ultrasonic probe for each patient, but it is necessary to immerse the body cavity ultrasonic probe in a chemical solution for several tens of minutes, which is a time constraint. .

Further, as shown in FIG. 3, after the examination site is immersed in the degassed water 101, the ultrasonic probe 120 in the body cavity is projected from the forceps hole of the endoscope 110 to remove the degassed water 101 near the examination site. In the degassed water filling method in which the inspection site is observed by putting the degassed water inside, the degassed water 101 easily flows in some places, and storage of the degassed water 101 is difficult in many cases.

In order to solve these problems, as shown in FIG. 4, a balloon 130 is attached to the distal end of the endoscope 110 and a thread 131.
A balloon method has been developed in which the balloon 130 is inflated by injecting distilled water 133 to inflate the balloon 130 and observe the examination site with the ultrasonic probe 120 in the body cavity.

[0006]

However, in the observation by the conventional balloon method, the balloon mounting is complicated and
Since the balloon is attached to the tip of the endoscope, not only the therapeutic forceps cannot be used, but also the problem that the observation with the endoscope cannot be performed occurs.

The present invention has been made in view of the above circumstances, and an object thereof is to provide therapeutic forceps when an ultrasonic probe in a body cavity does not come into contact with a living body and an endoscope is used. Another object of the present invention is to provide a guide tube for an ultrasonic probe in a body cavity that can be used and can be observed with an endoscope.

[0008]

In order to achieve the above object, the present invention provides one of a cylindrical tube made of a resin having good slipperiness, such as Teflon, into which an ultrasonic probe in a body cavity can be inserted. The end is covered with an elastic thin film made of transparent silicone or natural rubber that has a high expansion coefficient, high ultrasonic permeability, and transparency, and the ultrasonic probe in the body cavity can be inserted into the other end and is watertight. A body cavity ultrasonic probe insertion port provided with a sealing material such as an oil seal and an O-ring which is in a state of being provided, and an injection port capable of injecting an acoustic medium are provided in the vicinity of the body cavity ultrasonic probe insertion port. Is characterized by.

Further, the cylindrical tube into which the ultrasonic probe in the body cavity can be inserted is characterized in that it can be inserted into the forceps hole of the endoscope.

[0010]

According to the above construction, one end of the cylindrical tube into which the intracorporeal ultrasonic probe can be inserted is covered with the elastic thin film body, and the intracorporeal ultrasonic probe can be inserted into the other end. In addition, since the ultrasonic probe insertion port in the body cavity is provided with a sealing material that is in a watertight state, and the injection port capable of injecting the acoustic medium is provided near the ultrasonic probe insertion port in the body cavity. After injecting the acoustic medium from the inside of the body cavity, the body cavity ultrasonic probe is inserted from the body cavity ultrasonic probe insertion port, so that the elastic thin film body of the body cavity ultrasonic probe expands. Further, the degree of this expansion is adjusted by injecting or withdrawing the acoustic medium from the inlet.

Further, by making it possible to insert a cylindrical tube into which the ultrasonic probe in the body cavity can be inserted into the forceps hole of the endoscope, it is possible to perform observation using the forceps hole of the endoscope. Become.

[0012]

FIG. 1 is a sectional view showing an embodiment of a guide tube for an ultrasonic probe in a body cavity according to the present invention.

As shown in FIG. 1, the intracavity ultrasonic probe guide tube 1 of this embodiment has an outer shape that can be inserted into the forceps insertion port 111 of the endoscope 110, and the intracorporeal ultrasonic probe 120 is inside. An elastic thin film body 5 having a high expansion coefficient is attached to the tip portion (inspection site side) of a cylindrical tube 3 through which the elastic tube 5 can be inserted.
Is fixed so as to be covered by a method such as welding or adhesion, and an oil seal 7a is provided at the ultrasonic probe insertion port 7 in the body cavity of the tube 3, and the tip of the syringe 9a is provided in the vicinity of the ultrasonic probe insertion port 7 in the body cavity. The water injection port 9 is provided in conformity with the taper.

As the tube 3, a resin having good slipperiness such as Teflon is suitable. Further, as the elastic thin film body 5, silicone or natural rubber having a high expansion coefficient, good ultrasonic wave permeability and transparency is suitable.

Next, the observation operation using the guide tube 1 for the ultrasonic probe in the body cavity of this embodiment will be described.

First, the operator (doctor) operates the endoscope 110.
Is inserted near the examination site in the body cavity. After that, the intracavity ultrasonic probe guide tube 1 is inserted through the forceps hole 111 of the endoscope 110.

Then, after the tip portion of the guide tube 1 for the ultrasonic probe in the body cavity is projected from the forceps hole 111,
Degassed water obtained by degassing distilled water, physiological saline, etc. is injected from the water injection port 9 using the syringe 9a to remove the air existing in the intracorporeal ultrasonic probe guide tube 1 from the intracorporeal ultrasonic probe insertion port 7 Pull out from.

In this state, the body cavity ultrasonic probe 120 is inserted from the body cavity ultrasonic probe insertion port 7. As a result, as shown in FIG. 2, the volume of the ultrasonic probe 120 and the elastic thin film body 5 at the tip of the intracorporeal ultrasonic probe guide tube 1 expand. The degree of expansion can be adjusted by injecting or withdrawing deaerated water using the syringe 9a.

As described above, by using the intracorporeal ultrasonic probe guide tube 1 of the present embodiment, the state becomes the same as when the conventional balloon is inflated, and the distal end of the intracorporeal ultrasonic probe 120 and the examination site. An appropriate interval (standoff) is provided between the two, and a good observation image can be obtained.

Since the intracavity ultrasonic probe 120 does not directly contact the living body, infection between patients via the intracavity ultrasonic probe 120 can be prevented.

Further, the complicated operation of mounting the balloon is not necessary, and since the balloon is not mounted on the endoscope 110, the ultrasonic probe 120 in the body cavity is fixed to the forceps hole 11.
When it comes out of 1, the medical treatment forceps can be used, and the endoscope 1
Observation by 10 is also possible.

If a large number of intracorporeal ultrasonic probe guide tubes 1 are provided, the intracorporeal ultrasonic probe guide tube 1 can be replaced frequently, so that it is possible to sterilize and disinfect over time. Infection between patients via the intracorporeal ultrasonic probe guide tube 1 can be prevented. Furthermore, by making the intracorporeal ultrasonic probe guide tube 1 disposable, infection between patients via the intracorporeal ultrasonic probe guide tube 1 can be eliminated.

Further, the intracavity ultrasonic probe 1 inserted into the intracorporeal ultrasonic probe guide tube 1 of the present embodiment.
20 is a sealed type in which a vibrator for generating ultrasonic waves is covered with a member having good ultrasonic permeability, but the present invention is not limited to this, and an open type that does not cover the vibrator is used. Is also good.

In the guide tube 1 for the ultrasonic probe in the body cavity of this embodiment, the case where the guide tube 1 is inserted into the forceps hole 111 of the endoscope 110 for observation has been described as an example, but the present invention is not limited to this. Instead of using 110, the intracorporeal ultrasonic probe guide tube 1 may be directly inserted into the body cavity.

[0025]

As described above, according to the present invention, one end of a cylindrical tube into which an ultrasonic probe in a body cavity can be inserted is covered with an elastic thin film body, and the other end is covered with the body cavity. An ultrasonic probe insertion port inside the body cavity provided with a sealing material into which the internal ultrasonic probe can be inserted and is in a watertight state is provided, and an injection port capable of injecting an acoustic medium is provided in the vicinity of the ultrasonic probe insertion port inside the body cavity. Since it is provided, after injecting the acoustic medium from the injection port, by inserting the ultrasonic probe in the body cavity from the ultrasonic probe insertion port in the body cavity,
The volume of the ultrasonic probe in the body cavity expands, and the elastic thin film body expands. Therefore, the ultrasonic probe in the body cavity does not come into contact with the living body, a proper interval is provided, and a good observation image can be obtained.

Further, by making it possible to insert a cylindrical tube into which the ultrasonic probe in the body cavity can be inserted into the forceps hole of the endoscope, therapeutic forceps can be used through the endoscope, and Observation with an endoscope is also possible.

Furthermore, since the intracavity ultrasonic probe does not directly contact the living body, infection between patients via the intracavity ultrasonic probe can be prevented.

Furthermore, if a large number of guide tubes for the intracorporeal ultrasonic probe are provided, the guide tubes for the intracorporeal ultrasonic probe can be replaced frequently, so that it may take time to guide the intracorporeal ultrasonic probe. The tube can be sterilized and disinfected, and infection between patients via the guide tube for the ultrasonic probe in the body cavity can be prevented. Furthermore, by disposing the guide tube for the ultrasonic probe in the body cavity, it is possible to eliminate infection between patients via the guide tube 1 for the ultrasonic probe in the body cavity.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a guide tube for an ultrasonic probe in a body cavity according to the present invention.

FIG. 2 is a cross-sectional view of a distal end portion when an intracorporeal ultrasonic probe is inserted after injecting deaerated water into the intracorporeal ultrasonic probe guide tube shown in FIG.

FIG. 3 is an explanatory diagram showing an example of a deaerated water filling method.

FIG. 4 is an explanatory diagram showing an example of a balloon method.

[Explanation of symbols]

 1 Guide Tube for Ultrasonic Probe in Body Cavity 3 Tube 5 Elastic Thin Film Body 7 Ultrasonic Probe Insertion Port in Body Cavity 7a Oil Seal (Seal Material) 9 Water Injection Port (Inlet) 11 Degassed Water 110 Endoscope 111 Forceps Hole 120 Body Cavity Internal ultrasonic probe

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Isao Komiyama 1385-1 Shimoishigami, Otawara-shi, Tochigi Stock company Toshiba Nasu factory (72) Inventor Emi Yoshinaga 1385-1 Shimoishi, Otawara-shi, Tochigi (72) Inventor Izumi Watanabe 1385-1 Shimoishigami, Otawara-shi, Tochigi Stock company Toshiba Nasu factory

Claims (3)

[Claims] 1. An elastic thin film body covers one end of a cylindrical tube into which an ultrasonic probe in a body cavity can be inserted.
The other end is provided with an intracorporeal ultrasonic probe insertion port equipped with a sealing material into which the intracorporeal ultrasonic probe can be inserted and is in a watertight state, and an injection port capable of injecting an acoustic medium is provided in the intracorporeal cavity. A guide tube for an ultrasonic probe in a body cavity, which is provided in the vicinity of an ultrasonic probe insertion port. 2. The intracorporeal ultrasonic probe according to claim 1, wherein the cylindrical tube into which the intracorporeal ultrasonic probe can be inserted can be inserted into a forceps hole of an endoscope. Guide tube. 3. The guide tube for an ultrasonic probe in a body cavity according to claim 1, wherein the elastic thin film body has transparency.