JP2005253483A - Ultrasonic endoscope and multilumen tube for ultrasonic endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic endoscope which mitigates a burden on a patient by reducing an outer diameter of an insertion part. <P>SOLUTION: The ultrasonic endoscope includes the insertion part having both an ultrasonic probe oscillating ultrasonic pulse signals to a subject part and a balloon enclosing the ultrasonic probe at the distal end. A multilumen tube divided into two tubes, a balloon water supply tube for supplying water to the inside of the balloon and a suction tube for sucking water from the balloon, is inserted in the insertion part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an ultrasonic endoscope and a multi-lumen tube for fluid passage used in an ultrasonic endoscope.

In the ultrasonic endoscope, a balloon water supply tube to the balloon, a suction tube for absorbing water from the balloon, a US cable connected to the ultrasonic probe, a CCD cable, and a light guide for illumination are inserted. Yes.
JP 2003-210396 A

  In the conventional ultrasonic endoscope, since the plurality of tubes, the plurality of cables, and the light guide as described above are inserted in the insertion portion, the outer diameter of the insertion portion must be increased. A large burden was placed on the patient to whom the proper insertion part was introduced. Moreover, since many members, such as a tube, must be inserted into the endoscope, the assembly of the endoscope is not easy and requires a long working time. Furthermore, when work is performed with a large number of members inserted in this manner, these members are often entangled inside the insertion portion. There was a risk of damage.

  In order to solve the above-mentioned problem, the multi-lumen tube for an ultrasonic endoscope according to the present invention is an ultrasonic endoscope tube that is inserted into an insertion portion, and the inside thereof is arranged at the distal end of the insertion portion. A balloon water supply tube for supplying water into the balloon and a suction tube for sucking water from the balloon are divided into two parts.

  Further, the multi-lumen tube for an ultrasonic endoscope of the present invention is an ultrasonic endoscope tube that is inserted into an insertion portion, and the inside is filled with water in a balloon disposed at the distal end of the insertion portion. It is divided into four parts: a balloon water supply tube to be supplied, a suction tube for sucking water from the balloon, an air supply tube for ejecting air from its tip, and a water feed tube for jetting water from its tip. Yes.

The multi-lumen tube for an ultrasonic endoscope is preferably formed by extrusion molding of polytetrafluoroethylene.

  Furthermore, the ultrasonic endoscope according to the present invention has an insertion portion having an ultrasonic probe that oscillates an ultrasonic pulse signal with respect to a test portion and a balloon that encloses the ultrasonic probe at the tip, The part is characterized in that a multi-lumen tube divided into two parts is inserted therein, a balloon water supply tube for supplying water into the balloon and a suction tube for sucking water from the balloon.

  Further, in the ultrasonic endoscope of the present invention, the ultrasonic endoscope having an ultrasonic probe that oscillates an ultrasonic pulse signal with respect to the test portion, and a balloon that encloses the ultrasonic probe, has an insertion portion provided at the tip, The insertion section includes a balloon water supply tube for supplying water into the balloon, a suction tube for sucking water from the balloon, an air supply tube for ejecting air from the tip, and a water feed for ejecting water from the tip. It is characterized in that a multi-lumen tube formed by dividing the tube into four is inserted.

  According to the present invention, since the multi-lumen tube incorporates a part or all of the air supply tube, the water supply tube, the balloon water supply tube to the balloon, and the suction tube for absorbing water from the balloon, the outer diameter of the insertion portion Can be reduced, and the burden on the patient can be reduced. In addition, with such a configuration, the endoscope can be easily assembled and the working time can be shortened. Furthermore, the tube, the cable, and the light guide are less likely to get entangled inside the insertion portion, and the possibility that these tubes are damaged is reduced.

<First Embodiment>
Hereinafter, a first embodiment according to the present invention will be described in detail with reference to the drawings. An ultrasonic endoscope 10 according to the first embodiment includes an insertion portion 11 having flexibility, an operation portion 12 held by an operator, and a universal tube (a flexible tube for CCD) extended from the operation portion 12. ) 13 and a flexible tube 14 for US.

  The insertion part 11 is extended from the operation part 12, and is comprised from the front-end | tip rigid part 11a, the bending part 11b, and the insertion part flexible tube 11c. The distal end rigid portion 11a includes an ultrasonic probe 15a, an objective lens (not shown), a CCD 16 disposed behind the objective lens, and the like. The ultrasonic probe 15a is included in the balloon 15b. The balloon 15b can be inflated by introducing water into the balloon 15b, and the balloon 15b can be contracted by discharging the water. When a drive signal is given from an ultrasonic diagnostic apparatus (not shown), an ultrasonic pulse signal is oscillated toward a test part (for example, a lesion) in the patient body, and an ultrasonic pulse signal reflected by the test part is received. Converted into an electrical echo signal. The converted echo signal is subjected to signal processing in the ultrasonic diagnostic apparatus and stored as image information (echo image). This stored echo image can be observed on an ultrasonic image monitor (not shown). On the other hand, the observation image formed by the objective lens is converted into an electronic image by the CCD 16 and can be observed on an endoscopic image monitor (not shown) via a video processor (not shown).

  The operation portion 12 is provided with a forceps insertion port 17 that communicates with a tubular forceps channel 23 (FIG. 2) formed in the insertion portion 11. A treatment tool such as forceps is inserted from the forceps insertion port 17 through the forceps channel 23 and is extended from the distal rigid portion 11a to treat a lesioned portion or the like.

The universal tube 13 is provided with a CCD connector 13a and a light guide connector 13b that are detachably attached to the video processor at the tip. A CCD cable 21 (FIG. 2) for electrically connecting the CCD connector 13a and the CCD 16 from the universal tube 13 through the operation section 12 and the insertion section 11, and a light guide 20 extending from the light guide connector 13b. (FIG. 2) is interpolated.

The US flexible tube 14 is provided with a US connector 14a detachably attached to the ultrasonic diagnostic apparatus at the tip. A US cable 22 (FIG. 2) for electrically connecting the US connector 14a and the ultrasonic probe 15a is inserted from the US flexible tube 14 through the operation unit 12 and the insertion unit 11.

  Further, a tubular tube 30 having a circular cross section is inserted in the insertion portion 11 and the operation portion 12. The tube 30 is a so-called double lumen tube (multi-lumen tube) for supplying water to the balloon 15b by a plate-like partitioning portion 31 that extends in the radial direction through the center of the circle of the cross section and penetrates 30. And the suction tube 33 for absorbing water from the balloon 15b. The tip of the tube 30 communicates with the above-described balloon 15b. The tube 30 can be formed by extrusion molding using, for example, polytetrafluoroethylene.

When a balloon water supply button 18 provided on the operation unit 12 is pressed, water is ejected from the balloon water supply tube 32 into the balloon 15b by the operation of a water supply / absorption unit (not shown) connected to the operation unit 12, and the balloon water supply button By continuing to press 18, the balloon 15b can be inflated until it comes into contact with the portion to be examined. On the other hand, when the water absorption button 19 provided on the operation unit 12 is pressed, the water in the balloon 15b is sucked into the suction tube 33 and the balloon 15b is contracted by the operation of the water supply / water absorption unit. It becomes easy to collect.

  In this manner, the outer diameter of the insertion portion 11 is reduced by configuring the balloon water supply tube and the suction tube, which are conventionally inserted into the insertion portion 11 and the operation portion 12 as separate tubes, with a single tube 30. It is possible to reduce the burden on the patient into which the insertion portion 11 is introduced. Further, the endoscope can be easily assembled to the insertion portion 11 and the operation portion 12, and the working time can be shortened. Furthermore, the balloon water supply tube and the suction tube, or the tube and the cable or the light guide are not entangled inside the insertion portion, and the possibility that they are damaged is reduced.

Second Embodiment
Next, a second embodiment of the present invention will be described with reference to FIG. The second embodiment is different from the first embodiment in that the tube 40 is used instead of the tube 30. Other configurations are the same as those of the first embodiment, and the same reference numerals are used for the same members.

  In the second embodiment, a tubular tube 40 having a circular cross section is inserted into the insertion portion 11 and the operation portion 12. The tube 40 is a so-called multi-lumen tube, and feeds water to the balloon 15b by two plate-like partition portions 41 and 42 that are perpendicular to each other and extend in the radial direction at the center of a circle of the cross section. The water supply tube 43 is divided into a water supply tube 43, a suction tube 44 for absorbing water from the balloon 15b, an air supply tube 45, and a water supply tube 46. The tips of the balloon water supply tube 43 and the suction tube 44 communicate with the above-described balloon 15b, and the tips of the air supply tube 45 and the water supply tube 46 are exposed from the tip rigid portion 11a. The tube 40 can be formed in the same manner as the tube 30 of the first embodiment. For example, the tube 40 can be formed by extrusion using polytetrafluoroethylene.

When a balloon water supply button 18 provided on the operation unit 12 is pressed, water is ejected from the balloon water supply tube 43 into the balloon 15b by the operation of a water supply / absorption unit (not shown) connected to the operation unit 12, and the balloon water supply button By continuing to press 18, the balloon 15b can be inflated until it comes into contact with the portion to be examined. On the other hand, when the water absorption button 19 provided on the operation unit 12 is pressed, the water in the balloon 15b is sucked into the suction tube 44 by the operation of the water supply / water absorption unit connected to the operation unit 12, and the balloon 15b contracts. The collection of the insertion portion 11 after the treatment becomes easy. Further, when the hole at the top of the air / water supply button (not shown) is closed, air is ejected from the tip of the air supply tube 45 to remove the cloud on the surface of the objective lens (not shown) and to supply air to the patient's body. Done. When the air / water supply button is pushed in, water is ejected from the tip of the water supply tube 46, and the surface of the objective lens is cleaned. Water or air ejected by operating the air / water supply button is supplied from an air / water supply unit (not shown) connected to the operation unit 12.
Other operations, effects, and modifications are the same as those in the first embodiment.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, and can be improved or changed within the scope of the purpose of the improvement or the idea of the present invention.

1 is an external view showing a configuration of an ultrasonic endoscope according to a first embodiment of the present invention. It is sectional drawing which followed the II-II line | wire of FIG. 1 which shows the structure in the insertion part which concerns on 1st Embodiment of this invention. It is sectional drawing orthogonal to the central axis of the insertion part which shows the structure in the insertion part which concerns on 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Ultrasonic endoscope 11 Insertion part 15a Ultrasonic probe 15b Balloon 30 Tube (multi-lumen tube)
32 Balloon water supply tube 33 Suction tube 40 Tube (multi-lumen tube)
43 Balloon water supply tube 44 Suction tube 45 Air supply tube 46 Water supply tube

Claims (6)

A multi-lumen tube for an ultrasonic endoscope that is inserted into an insertion portion,
A balloon water supply tube for supplying water into a balloon disposed at the distal end of the insertion portion;
A suction tube for sucking water from the balloon;
A multi-lumen tube for an ultrasonic endoscope, characterized by being divided into two parts. A multi-lumen tube for an ultrasonic endoscope that is inserted into an insertion portion,
A balloon water supply tube for supplying water into a balloon disposed at the distal end of the insertion portion;
A suction tube for sucking water from the balloon;
An air supply tube that ejects air from its tip;
A water supply tube that ejects water from its tip;
A multi-lumen tube for an ultrasonic endoscope characterized by being divided into four parts. The multi-lumen tube for an ultrasonic endoscope according to claim 1 or 2, wherein the multi-lumen tube for an ultrasonic endoscope is formed by extrusion molding of polytetrafluoroethylene. An ultrasonic probe that oscillates an ultrasonic pulse signal to the test part;
A balloon containing the ultrasonic probe;
Having an insertion portion provided at the tip,
In the insertion portion, a balloon water supply tube for supplying water into the balloon inside,
A suction tube for sucking water from the balloon;
A multi-lumen tube divided into two is inserted into the ultrasonic endoscope. An ultrasonic probe that oscillates an ultrasonic pulse signal to the test part;
A balloon containing the ultrasonic probe;
Having an insertion portion provided at the tip,
In the insertion portion, a balloon water supply tube for supplying water into the balloon inside,
A suction tube for sucking water from the balloon;
An air supply tube that ejects air from its tip;
A water supply tube that ejects water from its tip;
An ultrasonic endoscope characterized in that a multi-lumen tube divided into four is inserted. The ultrasonic endoscope according to claim 4 or 5, wherein the multi-lumen tube is formed by extrusion molding of polytetrafluoroethylene.

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