OVER TUBE

• US 20090259172A1
• Filed: 04/09/2008
• Published: 10/15/2009
• Est. Priority Date: 04/09/2008
• Status: Abandoned Application

• Current Assignee: Olympus Medical Systems Corporation (Olympus Corporation)
• Original Assignee: Olympus Medical Systems Corporation (Olympus Corporation)
• Inventors: OYAMA, Masatsugu, HIRAGA, Kunitoshi, YAMAOKA, Koji, NODA, Kenji
• Application Number:
  US12/099,848
• Publication Number:
  US 20090259172A1
• Time in Patent Office: Days
• US Class Current: 604/26
• CPC Class Codes: A61B 1/00078 with stiffening means
• CPC Class Codes: A61B 1/00082 Balloons
• CPC Class Codes: A61B 1/00135 Oversleeves mounted on the endoscope prior to insertion
• CPC Class Codes: A61B 1/00154 using guiding arrangements for insertion
• CPC Class Codes: A61B 1/00165 with light-conductive means, e.g. fibre optics A61B1/07 takes precedence
• CPC Class Codes: A61B 1/005 Flexible endoscopes
• CPC Class Codes: A61B 1/015 Control of fluid supply or evacuation
• CPC Class Codes: A61B 1/2736 Gastroscopes
• CPC Class Codes: A61M 13/003 Blowing gases other than for carrying powders, e.g. for inflating, dilating or rinsing
• CPC Class Codes: A61M 2210/105 Oesophagus
• CPC Class Codes: A61M 2210/1053 Stomach

Abstract

An over tube comprises an over tube body that has an inner diameter fitting over the outer diameter of an insertion part, and is flexible and expandable in the direction of the outer diameter, a gas supply port provided on the base end side of the over tube body, an expansion/contraction part that is formed integrally with the gas supply port, provided to communicate from the base end side to a predetermined position on a distal end side, and can expand in the direction of the outer diameter by injecting a gas from the gas supply port, and at least one channel that is provided between the inner and the outer diameters of the over tube body, and penetrates from the distal end of the over tube through the base end side.

Claims

1. An over tube, comprising:

an over tube body that has an inner diameter fitting over an outer diameter of an insertion part, and is flexible and expandable in a direction of the outer diameter;

a gas supply port provided on a base end side of said over tube body;

an expansion/contraction part that is formed integrally with said gas supply port, provided to communicate from the base end side to a predetermined position on the distal end side, and can expand in the direction of the outer diameter by injecting a gas from said gas supply port; and

at least one channel that is provided between the inner and outer diameters of said over tube body, and penetrates from the distal end of the over tube through the base end side.

2. The over tube according to claim 1, wherein

said expansion/contraction part expands by injecting a gas from said gas supply port into said expansion/contraction part when said expansion/contraction part is contracted, whereby said over tube body expands in the direction of the outer diameter, and a space for forming said channel is secured.

3. The over tube according to claim 1, wherein

there are a plurality of said channels.

4. The over tube according to claim 1, wherein

said over tube further comprises an elastic cover for sheathing an outer surface of said over tube body.

5. An insufflation system, comprising:

an over tube body that has an inner diameter fitting over an outer diameter of an insertion part, and is flexible and expandable in a direction of the outer diameter;

a gas supply port provided on a base end side of said over tube body;

an insufflation device that is linked to said gas supply port, and supplies a gas to said gas supply port;

an expansion/contraction part that is formed integrally with said gas supply port, provided to communicate from the base end side to a predetermined position on a distal end side, and can expand in the direction of the outer diameter by injecting a gas from said insufflation device into said gas supply port; and

at least one channel that is provided between the inner and outer diameters of said over tube body, and penetrates from the distal end side of the over tube through the base end side.

6. The insufflation system according to claim 5, wherein

said insufflation device is further linked to an opening of said channel on the base end side of the over tube, and supplies a gas to said channel.

7. A method for using an over tube, wherein:

said over tube comprises

an over tube body that has an inner diameter fitting over an outer diameter of an insertion part, and is flexible and expandable in a direction of the outer diameter,

a gas supply port provided on a base end side of said over tube body,

an expansion/contraction part that is formed integrally with said gas supply port, provided to communicate from the base end side to a predetermined position on a distal end, and can expand in the direction of the outer diameter by injecting a gas from said gas supply port, and

at least one channel that is provided between the inner and outer diameters of said over tube body, and penetrates from the distal end of said over tube through the base end side, wherein;

the insertion part, to which the over tube with said extraction/contraction part being contracted is attached, is inserted from a natural orifice of a human being into a hole made in an organic wall; and

said extraction/contraction part expands by injecting the gas from said gas supply port after the insertion part to which the over tube is attached is inserted into the hole, and said over tube body expands in the direction of the outer diameter, whereby a space for forming said channel is secured, and because the expansion of said expansion/contraction part causes said over tube body to expand in the direction of the outer diameter, the hole made in the organic wall is infilled.