MEDICAL TREATMENT ENDOSCOPE

• US 20100081874A1
• Filed: 09/02/2009
• Published: 04/01/2010
• Est. Priority Date: 09/02/2008
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation, Olympus Medical Systems Corporation (Olympus Corporation)
• Inventors: KITAGAWA, Hideya, TANAKA, Hirokazu, IEDE, Taro, MIYAMOTO, Manabu, ITO, Yoshiaki
• Granted Patent: US 8,727,968 B2
• Time in Patent Office: Days
• US Class Current: 600/109
• CPC Class Codes: A61B 1/00087 Tools A61B17/00234 takes precedence
• CPC Class Codes: A61B 1/00105 characterised by modular construction
• CPC Class Codes: A61B 1/00133 Drive units for endoscopic tools inserted through or with the endoscope
• CPC Class Codes: A61B 1/0014 Fastening element for attaching accessories to the outside of an endoscope, e.g. clips, clamps or bands
• CPC Class Codes: A61B 1/0051 with controlled bending of insertion part
• CPC Class Codes: A61B 1/0055 Constructional details of insertion parts, e.g. vertebral elements
• CPC Class Codes: A61B 1/018 for receiving instruments
• CPC Class Codes: A61B 1/3132 for laparoscopy
• CPC Class Codes: A61B 2017/2906 Multiple forceps
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula

Abstract

Provided is a medical treatment endoscope including: an endoscope main body which includes an elongated insertion portion having a lumen and an image capturing mechanism disposed in a distal end of the insertion portion; an arm which is able to be inserted into or extracted from the lumen and has a treatment tool lumen for allowing an endoscope treatment tool to be inserted therethrough; and a positioning mechanism which positions a part of the arm inserted through the lumen with respect to the endoscope main body.

Claims

1. A medical treatment endoscope comprising:

an endoscope main body which includes an elongated insertion portion having a lumen and an image capturing mechanism disposed in a distal end of the insertion portion;

an arm which is able to be inserted into or extracted from the lumen and has a treatment tool lumen for allowing an endoscope treatment tool to be inserted therethrough; and

a positioning mechanism which positions a part of the arm inserted through the lumen with respect to the endoscope main body.

2. The medical treatment endoscope according to claim 1,

wherein the positioning mechanism comprises

a stopper which is formed in the outer peripheral surface of the arm so as to be able to protrude or retract and

a contact surface which is formed in a wall surface of the lumen so as to come into contact with the stopper, and

wherein when the arm is retracted with respect to the lumen in the state where the stopper is protruded, the stopper comes into contact with the contact surface.

3. The medical treatment endoscope according to claim 1,

wherein the positioning mechanism comprises

an engaging member which is formed in the outer peripheral surface of the arm so as to be able to protrude or retract and

a helical portion which is formed in a wall surface of the lumen so as to engage with the engaging member, and

wherein when the arm is retracted with respect to the lumen in the state where the engaging member engages with the helical portion, the arm is positioned with respect to the endoscope main body.

4. The medical treatment endoscope according to claim 1,

wherein the positioning mechanism comprises an engaging member which is formed in the outer peripheral surface of the arm so as to be able to protrude or retract and an inclined end surface which is formed in a distal end of the lumen so as to be inclined with respect to an axis of the lumen, and

wherein when the arm is retracted with respect to the lumen in the state where the engaging member is protruded, the arm is positioned with respect to the endoscope main body.

5. The medical treatment endoscope according to claim 1,

wherein the arm comprises an arm bending part which is formed in a distal end thereof and an arm operating portion which is formed in a proximal end thereof so as to be connected to the arm bending part.

6. The medical treatment endoscope according to claim 5,

wherein the arm bending part comprises

a first bending part which is able to be bent in four directions and

a second bending part which is formed at a position closer to a proximal end thereof than the first bending part and is able to be bent in two directions and to be maintained in the bending state.

7. The medical treatment endoscope according to claim 6,

wherein the positioning mechanism comprises an engaging member which is formed in a proximal end of the second bending part and an engaged member which is formed in a distal end of the lumen.

8. The medical treatment endoscope according to claim 7,

wherein the engaging member is able to protrude from the outer peripheral surface of the arm and to be accommodated inside the outer peripheral surface.

9. The medical treatment endoscope according to claim 1,

wherein the positioning mechanism comprises a holding portion which holds the positioned arm in the endoscope main body in a state in which the position of the arm is determined.