MEDICAL INSTRUMENT AND ADJUSTMENT METHOD OF MEDICAL INSTRUMENT

• US 20170105805A1
• Filed: 01/03/2017
• Published: 04/20/2017
• Est. Priority Date: 07/10/2014
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: HASEGAWA, Mitsuaki, YOSHII, Toshihiro
• Granted Patent: US 10,441,375 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 1/0057 Constructional details of force transmission elements, e.g. control wires
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2034/301 for introducing or steering flexible instruments inserted into the body, e.g. catheters or endoscopes
• CPC Class Codes: A61B 2034/715 Cable tensioning mechanisms for removing slack
• CPC Class Codes: A61B 2090/064 for measuring force, pressure or mechanical tension
• CPC Class Codes: A61B 34/30 Surgical robots
• CPC Class Codes: A61B 34/37 Master-slave robots A61B34/35 takes precedence
• CPC Class Codes: A61B 34/71 Manipulators operated by drive cable mechanisms
• CPC Class Codes: B25J 15/0019 End effectors other than grippers
• CPC Class Codes: B25J 15/0028 with movable, e.g. pivoting gripping jaw surfaces
• CPC Class Codes: B25J 19/00 Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators safety-devices in general F16P; protection against radiation in general G21F
• CPC Class Codes: B25J 3/00 Manipulators of master-slave type, i.e. both controlling unit and controlled unit perform corresponding spatial movements
• CPC Class Codes: B25J 9/065 Snake robots
• CPC Class Codes: B25J 9/1045 comprising tensioning means

Abstract

A medical instrument according to the present invention includes an end effector that fulfills a predetermined function, a motor unit that generates power for driving the end effector, a transmission member that is connected to the end effector and the motor unit so as to transmit the power to the end effector, a tension holding portion that has a tension generation portion and a tension pulley which is connected to the tension generation portion and which comes into contact with the transmission member the tension pulley being configured to move such that tension applied to the transmission member in a predetermined magnitude, and a switch that can fix a position of the tension pulley.

Claims

1. A medical instrument comprising:

an end effector that fulfills a predetermined function;

a power portion that generates power for driving the end effector;

a transmission member that is connected to the end effector and the power portion so as to transmit the power to the end effector;

a tension holding portion that has a tension generation portion and a movable portion which is connected to the tension generation portion and with which the transmission member comes into contact, the movable portion being configured to move such that tension applied to the transmission member is maintained at a predetermined magnitude; and

a fixing portion that is capable of fixing a position of the movable portion.

2. The medical instrument according to claim 1,

wherein the tension generation portion is formed of an elastic member.

3. The medical instrument according to claim 1,

wherein a plurality of the movable portions are provided.

4. The medical instrument according to claim 3,

wherein at least two of a plurality of the movable portions are connected to each other at the tension generation portion.

5. The medical instrument according to claim 1, further comprising:

an instrument unit that has the end effector and the transmission member; and

an adapter that has the power portion and the fixing portion,

wherein the power portion and the transmission member are connected to each other while the movable portion is fixed to be immovable by the fixing portion, when the instrument unit is mounted on the adapter.

6. The medical instrument according to claim 1,

wherein an annular power transmission route is formed between the power portion and the end effector by the transmission member.

7. An adjustment method of a medical instrument including an end effector that fulfills a predetermined function, a power portion that generates power for driving the end effector, and a transmission member that is connected to the end effector and the power portion so as to transmit the power to the end effector, the adjustment method comprising:

applying a predetermined magnitude of tension to the transmission member by using a tension holding portion that has a tension generation portion and a movable portion which is connected to the tension generation portion and with which the transmission member comes into contact; and

fixing a position of the movable portion.

8. The adjustment method of a medical instrument according to claim 7, further comprising:

connecting the power portion and the transmission member to each other so that the power is capable of being transmitted until fixing a position of the movable portion.