MEDICAL DEVICE

• US 20090105726A1
• Filed: 10/20/2008
• Published: 04/23/2009
• Est. Priority Date: 10/22/2007
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Medical Systems Corporation (Olympus Corporation)
• Inventors: SUGIYAMA, Yuta
• Granted Patent: US 8,597,174 B2
• Time in Patent Office: Days
• US Class Current: 606/130
• CPC Class Codes: A61B 1/00042 for mechanical operation
• CPC Class Codes: A61B 1/0051 with controlled bending of insertion part
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2018/00285 Balloons
• CPC Class Codes: A61B 2018/00482 Digestive system
• CPC Class Codes: A61B 2018/1407 Loop

Abstract

A medical device includes: a body electrode disposed in contact with a human body; a tubular instrument having a distal electrode at a distal end portion of an insertion portion inserted into the body and a plurality of active joints for changing an orientation and a position of the distal end portion at the insertion portion; a plurality of joint position information detecting sections for respectively acquiring joint position information of the plurality of active joints; and a storage section for storing the joint position information respectively acquired by the plurality of joint position information detecting sections based on conduction between the body electrode and the distal electrode.

Claims

1. A medical device comprising:

a body electrode disposed in contact with a human body;

a tubular instrument having a distal electrode at a distal end portion of an insertion portion inserted into the body and a plurality of active joints for changing an orientation and a position of the distal end portion at the insertion portion;

a plurality of joint position information detecting sections for respectively acquiring joint position information of the plurality of active joints; and

a storage section for storing the joint position information respectively acquired by the plurality of the joint position information detecting section based on conduction between the body electrode and the distal electrode.

2. The medical device according to claim 1, further comprising:

an electrode position detecting section for acquiring position information of the distal electrode based on the joint position information respectively acquired by the plurality of the joint position information detecting sections.

3. The medical device according to claim 1, further comprising:

a joint control section for controlling the active joints based on the position information of the distal electrode acquired by the electrode position detecting section and the joint position information stored in the storage section.

4. The medical device according to claim 3, wherein:

the joint control section controls each of the plurality of active joints by relatively comparing the joint position information of the plurality of active joints.

5. The medical device according to claim 3, wherein:

when the tubular instrument is an active treatment instrument having a treatment unit at the distal end portion of the insertion portion, the joint control section controls the active joints based on the joint position information in one coordinate system stored in the storage section and the position information of the distal electrode acquired by the electrode position detecting section to regulate the treatment unit.

6. The medical device according to claim 5, wherein:

when treatment is provided by guiding the treatment unit of the active treatment instrument into a body cavity through a treatment instrument channel of an endoscope, the active joints of the active treatment instrument changes an orientation and a position of the treatment unit of the active treatment instrument with the endoscope being held.

7. The medical device according to claim 1, further comprising:

a marking section for applying a mark to mucosa with the distal electrode contacting the mucosa.

8. The medical device according to claim 7, wherein:

the marking section applies a mark, which can be visually recognized on an endoscope image, to the mucosa by supplying a high-frequency current to the distal electrode.

9. The medical device according to claim 8, wherein:

the mark is position information of the coordinate system, and when the coordinate system is changed, position information of two marks in the coordinate system before movement and position information of two marks in a coordinate system after movement corresponding to the position information of the marks are acquired to obtain movement information of the coordinate system before and after movement.

10. The medical device according to claim 1, wherein:

the tubular instrument is an endoscope having an image pickup device at the distal end portion of the insertion portion and a bending portion constituted by the active joints for changing an orientation and a position of the distal end portion.