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Endoscopic system that uses overtube

a technology of endoscope and endoscope, which is applied in the field of endoscope system, can solve the problems of difficult endoscope treatment of papilla, less performance of endoscope inserting, and difficult treatment of papilla

Inactive Publication Date: 2011-12-08
OLYMPUS MEDICAL SYST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention aims to provide a therapeutic method and an endoscopic system that can access the Vater's papilla of a Roux-en-Y gastrectomy patient in a speedy, stable, and easy manner after smoothly passing the jejunum-to-jejunum anastomosed portion and jejunum-anastomosed bent portion. The technical effects of the invention include the ability to quickly and easily insert an endoscope into the gastrointestinal tract of a patient, allowing for diagnosis and treatment of the Vater's papilla and tissue located adjacent to it. Additionally, the invention provides a system and method that allows for the use of an overtube to facilitate access to the target area, making the procedure safer and more efficient.

Problems solved by technology

However, in this case, it is difficult to perform treatment, because the view in the treating direction cannot be secured.
Thus, it is easy for the endoscope to pass the overtube through the jejunum-anastomosed bent portion and to reach the papilla, while it is difficult to treat the papilla by the endoscope.
However, for the side-viewing endoscope, the view in the inserting direction cannot be secured, resulting in a lessened performance for inserting the endoscope.
As stated, it is considerably difficult to make both the treatment and the inserting performance easier at the same time.

Method used

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  • Endoscopic system that uses overtube
  • Endoscopic system that uses overtube
  • Endoscopic system that uses overtube

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0049]Referring now to FIGS. 1-7, the endoscopic system and the therapeutic procedure according to the first embodiment will now be described.

[0050]FIG. 1 shows the configuration of a primary part of the endoscopic system 1. As shown therein, the endoscopic system 1 is equipped with an overtube 11 on which a balloon is loaded, an air-supply device 12 controlling the expansion and shrinkage of the balloon of the overtube 11, and an endoscope 13 to be inserted together with the overtube 11 into body cavities or tubular cavities of an object (for example, the duodenum subjected to oral insertion). The endoscope 13 has an insertion tube inserted into an insertion channel of the overtube 11, and with its inserted state, the endoscope 13 is inserted into a body cavity or a tubular cavity of the object such that the overtube 11 is led.

[0051]The overtube 11 is made of a resin material, such as polyurethane, thermoplastic elastomer, fluorinasted resin, or silicon. This overtube 11 is provide...

second embodiment

[0086]Referring to FIGS. 13-14, a second embodiment of the endoscopic system according to the present embodiment will now be described.

[0087]Similarly to that in the first embodiment, an overtube 51 shown in FIG. 13 is provided with a flexible tubular portion 52 being made of resin and having flexibility, a grip 53 formed integrally with an at-hand side portion of the flexible tubular portion 52, and an air-supply mouth ring 54A and a water-supply mouth ring 54B both formed on the flexible tubular portion 52. Further, the flexible tubular portion 52 has a distal end portion which is obliquely cut over a predetermined length “a” in the axial direction of the distal end portion, which distal end portion is provided as a distal end portion 51A having an oblique opening. On the overtube 51, a balloon 55 made similarly to the foregoing one is loaded at a predetermined position shifted from the distal end portion 51A toward the at-hand side.

[0088]An operator inserts the first endoscope 13...

first modification

(First Modification)

[0094]FIG. 15 shows a first modification, which is concerned with an example showing how to operate the foregoing overtube 51.

[0095]In the foregoing second embodiment, the overtube 51 is inserted into the afferent loop F9 with the use of, as a guide, the insertion tube 13A of the first endoscope 13X. For this insertion, under X-ray fluoroscopy, an operator inserts the overtube 51 into the jejunum F4 (FIG. 15(A)), and rotates the overtube 51 in such a manner that an edge EG' of the distal end portion 51A (i.e., the distal-end-side edge of the oblique opening) is oriented toward the jejunum-to-jejunum anastomosed portion F5 (FIG. 15(B)). And, as shown in FIG. 15(B), when the opposite-side edge EG of the distal end portion 51A (i.e., the at-hand-side edge of the oblique opening) enters the inlet of the jejunum-to-jejunum anastomosed portion F5, the overtube 51 is rotated by 180 degrees on its axial direction. Thus, as shown in FIG. 15(C), the distal-end-side edge EG...

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Abstract

With a first endoscope inserted through an overtube, the overtube is orally inserted into an object being examined, and a distal end portion of an insertion tube of the first endoscope is made to advance, within the object, from a jejunum via a jejunum-to-jejunum anastomosed portion and a jejunum-anastomosed bent portion so that the distal end portion is located adjacently to a Vater's papilla of a duodenum. The overtube is then sent to a position which is adjacent to the Vater's papilla along the insertion tube of the first endoscope. After this, the first endoscope is pulled from the overtube. A second endoscope is then inserted into the overtube to make a distal end portion of its insertion tube protrude from the distal end of the overtube and is located adjacently to the Vater's papilla. The second endoscope thus-approached is used to treat the Vater's papilla and the tissue therearound.

Description

CROSS REFERENCES TO RELATED APPLICATION[0001]This application is a divisional application of U.S. Ser. No. 11 / 732,804 filed Apr. 4, 2007, the entire contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Technical Field of the Invention[0003]The present invention relates to a therapeutic method and an endoscopic system which use an overtube, and in particular, to the therapeutic method and the endoscopic system which use an overture and which are preferable to treatment on endoscopic retrograde cholangiopancreatography (ERCP) with patients who had a Roux-en-Y reconstructive operation.[0004]2. Related Art[0005]Endoscopic examinations and treatments for biliary disease and pancreas disease, such as biliary tract cancer, pancreas cancer, cholelithiasis, and common bile duct stone, are progressing at a rapid pace. Compared to the conventional surgical treatments, these examinations and treatments are less invasive and less burden on patients. The tech...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B1/00
CPCA61B1/00154A61B1/0051A61B1/00082A61B1/2736
Inventor MOTAI, KOUSUKEONUKI, YOSHIOKURA, YASUHITO
Owner OLYMPUS MEDICAL SYST CORP
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