Grasping treatment device

Patent metadata

Field	Value
Publication number	US-9833280-B2
Application number	US-201514720073-A
Country	US
Kind code	B2
Filing date	May 22, 2015
Priority date	Jun 7, 2013
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A jaw of a grasping treatment device includes a non-contact portion having a space between it and a distal treatment section in a state where an abutment portion abuts on the distal treatment section, and the non-contact portion includes a wall surface portion inclined so that it is extended toward a distal treatment section side as it is extended away from the abutment portion. A movement regulating portion is provided in a region of the non contact portion located closer to the abutment portion than a continuous surface which forms an edge of the non-contact portion. The movement regulating portion located in the first wall surface portion regulates a movement of a grasp object along the jaw axis direction.

First claim

What is claimed is:

1. A grasping treatment device comprising:
a probe which includes a distal treatment section in a distal portion thereof;
a jaw which extends from a proximal side toward a distal side along a longitudinal axis of the jaw, and which is openable and closable relative to the distal treatment section in jaw opening and closing directions that are transverse to a direction along the longitudinal axis of the jaw;
an abutment portion which is disposed in the jaw, and which is configured to abut on the distal treatment section by closing the jaw relative to the distal treatment section; and
a first non-contact portion that faces the distal treatment section and is provided on a first side of the abutment portion in a jaw width direction that is transverse to the jaw opening and closing directions and to the longitudinal axis, the first non-contact portion being spaced from the distal treatment section in a state where the abutment portion abuts on the distal treatment section,
wherein the first non-contact portion comprises:
a first continuous surface which forms an outer edge of the first non-contact portion in the jaw width direction, and which has a continuously curved shape along a length of the first non-contact portion when viewed in cross section perpendicular to both the jaw width direction and the longitudinal axis;
a first wall surface provided between the first continuous surface and the abutment portion in the jaw width direction, and which faces the abutment portion;
a first movement regulating portion formed in the first wall surface and having a convex and concave shape in the direction along the longitudinal axis, the first movement regulating portion being configured to regulate a movement of a tissue grasped between the jaw and the distal treatment section in the direction along the longitudinal axis.

2. The grasping treatment device of claim 1 , wherein:
the distal treatment section is made of a conductive material, and is configured to function as a probe electrode portion having a first electric potential when a high frequency current is transmitted thereto,
the abutment portion is made of an electrically insulating material,
the first non-contact portion is made of a conductive material, and is configured to function as a jaw electrode portion having a second electric potential different from the first electric potential when the high frequency current is transmitted thereto, and
the first movement regulating portion is configured to partially come in contact with the tissue when the tissue is grasped between the jaw and the distal treatment section.

3. The grasping treatment device of claim 2 , wherein:
the probe is configured to transmit an ultrasonic vibration to the distal treatment section from a proximal direction toward a distal direction,
the jaw includes an entire width insulating portion which faces the distal treatment portion and is provided distal to the first non-contact portion, and which is made of an electrically insulating material over an entire width of the jaw in the jaw width direction, and
the entire width insulating portion includes a distal portion of the abutment portion.

4. The grasping treatment device of claim 3 , wherein the entire width insulating portion has higher slipping properties with respect to the tissue than the first non-contact portion.

5. The grasping treatment device of claim 1 , wherein the first movement regulating portion includes a distance changing portion in which a distance from the longitudinal axis of the jaw to the first wall surface changes in accordance with positions in the direction along the longitudinal axis of the jaw.

6. The grasping treatment device of claim 1 , wherein:
the jaw further includes a second non-contact portion that faces the distal treatment section and is provided on a second side of the abutment portion in the jaw width direction opposite to the first side, the second non-contact portion being spaced from the distal treatment section in the state where the abutment portion abuts on the distal treatment section,
wherein the second non-contact portion comprises:
a second continuous surface which forms an outer edge of the second non-contact portion in the jaw width direction, and which has a continuously curved shape along a length of the second non-contact portion when viewed in cross section perpendicular to both the jaw width direction and the longitudinal axis;
a second wall surface provided between the second continuous surface and the abutment portion in the jaw width direction, and which faces the abutment portion; and
a second movement regulating portion formed in the second wall surface and having a convex and concave shape in the direction along the longitudinal axis, the second movement regulating portion being configured to regulate the movement of the tissue grasped between the jaw and the distal treatment section in the direction along the longitudinal axis.

Assignees

• Olympus Corp

Inventors

• Hirai Yuji
• Murakami Eiji

Classifications

• A61B18/1445 Primary

  at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod · CPC title

• A61B2017/320095

  with sealing or cauterizing means · CPC title

• A61B2017/320093

  additional movable means performing cutting operation · CPC title

• A61B2018/1457

  having opposing blades cutting tissue grasped by the jaws, i.e. combined scissors and pliers · CPC title

• A61B2018/00994

  combining two or more different kinds of non-mechanical energy or combining one or more non-mechanical energies with ultrasound · CPC title