Overtube

• US 20070163597A1
• Filed: 01/13/2006
• Published: 07/19/2007
• Est. Priority Date: 01/13/2006
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Medical Systems Corporation (Olympus Corporation)
• Inventors: Mikkaichi, Takayasu, Matsuno, Kiyotaka, Nakahashi, Kensei, Kaji, Kunihide
• Granted Patent: US 8,225,794 B2
• Time in Patent Office: Days
• US Class Current: 128/207.150
• CPC Class Codes: A61B 1/00082 Balloons
• CPC Class Codes: A61B 1/00154 using guiding arrangements for insertion
• CPC Class Codes: A61B 1/015 Control of fluid supply or evacuation
• CPC Class Codes: A61B 1/273 for the upper alimentary canal, e.g. oesophagoscopes, gastroscopes
• CPC Class Codes: A61M 16/04 Tracheal tubes catheters in general A61M25/00
• CPC Class Codes: A61M 16/0415 with access means to the stomach

Abstract

An over-tube of the present invention is an over-tube which guides a device having an insertion section to be inserted into a body of a patient, when inserting the insertion section into or retracting the insertion section from the body of the patient, wherein: a gas-supplying passage is defined between an inner face of the over-tube and the device to be inserted into the over-tube; the gas-supplying passage communicates with a gas-supplying port which is provided on a proximal end side of the over-tube, and a communicating port which is formed on an over-tube insertion section and supplies a gas into a trachea of the patient; and a sealing member which surrounds the communicating port and seals between a body wall of the patient and the communicating port, is provided on a periphery of an over-tube insertion section.

Claims

1. An over-tube which guides a device having an insertion section to be inserted into a body of a patient, when inserting the insertion section into or retracting the insertion section from the body of the patient, wherein:

a gas-supplying passage is defined between an inner face of the over-tube and the device to be inserted into the over-tube;

the gas-supplying passage communicates with a gas-supplying port which is provided on a proximal end side of the over-tube, and a communicating port which is formed on an over-tube insertion section and supplies a gas into a trachea of the patient; and

a first sealing member which secures and air passage for communicating the gas-supplying passage and the trachea of the patient via the communicating port by sealing between a body wall of the patient and the communicating port, is provided on a periphery of an over-tube insertion section.

2. The over-tube according to claim 1, wherein:

the gas-supplying passage is formed by a space defined by the inner face of the over-tube and the insertion section of the device to be inserted into the over-tube; and

second sealing members which seal between the inner wall of the over-tube and an outer face of the device to be inserted into the over-tube, are provided at each of a portion on a more distal end side than the communicating port and a portion on a more proximal end side than the gas supplying port.

3. The over-tube according to claim 1, wherein the gas-supplying passage is formed by a space partitioned by the inner face of the over-tube and a partitioning member provided inside the over-tube.

4. The over-tube according to claim 2, wherein the communicating port and the gas-supplying port are formed so as to open to an outer face of the over-tube insertion section.

5. The over-tube according to claim 2, further comprising a dummy member which is inserted into the over-tube instead of the device while the device is not inserted, and defines the gas-supplying passage together with the inner face of the over-tube.

6. The over-tube according to claim 3, wherein:

the partitioning member is formed by a tube-shaped member; and

the gas-supplying passage is formed so as to have a ring-shaped cross section by an outer face of the tube-shaped member and the inner face of the over-tube.

7. The over-tube according to claim 1, wherein:

the communicating port has an opening on the periphery of the over-tube insertion section; and

the first sealing member includes at least a pair of sealing portions formed on the periphery of the over-tube insertion section along a radial direction of the over-tube insertion section, so as to sandwich the opening therebetween.

8. The over-tube according to claim 1, wherein:

the communicating port has an opening on the periphery of the over-tube insertion section; and

the first sealing member includes a sealing portion formed on the periphery of the over-tube insertion section so as to surround the opening.