Surgical end effectors having angled tissue-contacting surfaces

• US 9,289,256 B2
• Filed: 06/28/2012
• Issued: 03/22/2016
• Est. Priority Date: 06/28/2012
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery LLC (Johnson & Johnson)
• Inventors: Shelton, Frederick E. IV, Baxter, Chester O. III, Yates, David C.
• Primary Examiner(s): VOORHEES, CATHERINE M
• Application Number:
  US13/536,326
• Publication Number:
  US 20140005653A1
• Time in Patent Office: 1,363 Days
• Field of Search: 606/33, 606/41, 606/45, 606/48, 606 51- 52, 606/205
• US Class Current: 1/1
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 17/295 combined with cutting implements
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 18/18 by applying electromagnetic radiation, e.g. microwaves radiation therapy A61N5/00
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 2017/00212 using remote controls
• CPC Class Codes: A61B 2017/003 Steerable
• CPC Class Codes: A61B 2017/00309 Cut-outs or slits
• CPC Class Codes: A61B 2017/00314 Separate linked members
• CPC Class Codes: A61B 2017/00327 with actuating members moving in opposite directions
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 34/70 Manipulators specially adapted for use in surgery

Abstract

Surgical end effectors are disclosed having angled tissue-contacting surfaces. The end effectors may have a first jaw member that is movable relative to a second jaw member between an open position and a closed position. The first jaw member may have a first positively-angled tissue-contacting surface. The second jaw member may have a second positively-angled tissue-contacting surface. At least one of the jaw members may have at least one active electrode configured to deliver RF energy to tissue located between the first jaw member and the second jaw member when in the closed position.

Claims

1. An end effector, comprising:

a first jaw member, comprising;

a first jaw body extending longitudinally along a length of the first jaw member, the first jaw body comprising;

a first planar tissue gripping element;

a first positively-angled tissue-contacting surface extending from the first planar tissue gripping element in a first direction away from the first jaw body; and

a first negatively-angled tissue-contacting surface extending from the first planar tissue gripping element in a second direction toward the first jaw body; and

a second jaw member, comprising;

a second jaw body extending longitudinally along a length of the second jaw member, the second jaw body comprising;

a second planar tissue gripping element;

a second positively-angled tissue-contacting surface extending from the second planar tissue gripping element in a third direction away from the second jaw body and toward the first jaw body; and

a second negatively-angled tissue-contacting surface extending from the second planar tissue gripping element in a fourth direction toward the second jaw body and away from the first jaw body;

wherein the first jaw member is movable relative to the second jaw member between an open position and a closed position;

wherein at least one of the first jaw member and the second jaw member comprises at least one activatable electrode;

wherein the at least one activatable electrode is configured to deliver RF energy to tissue located between the first jaw member and the second jaw member when in the closed position; and

wherein the first direction is parallel to the fourth direction, and wherein the second direction is parallel to the third direction.

2. The end effector of claim 1, wherein the at least one activatable electrode is disposed on the second jaw member, and further comprising at least one return electrode disposed on the first jaw member, wherein the at least one activatable electrode and the at least one return electrode are in a bipolar configuration.

3. The end effector of claim 1, wherein the first positively-angled tissue-contacting surface opposes the second negatively-angled tissue-contacting surface when the first and second jaw members are in the closed position, and wherein the first negatively-angled tissue-contacting surface opposes the second positively-angled tissue-contacting surface when the first and second jaw members are in the closed position.

4. The end effector of claim 1, wherein the first positively-angled tissue-contacting surface forms an angle with the first planar tissue gripping element, wherein the second positively-angled tissue-contacting surface forms an angle with the second planar tissue gripping element, and wherein the angles range from 25 degrees to 50 degrees.

5. The end effector of claim 4, wherein the angles are the same.

6. The end effector of claim 1, wherein the first positively-angled tissue-contacting surface is disposed along substantially an entire length of the first jaw member, and wherein the second positively-angled tissue-contacting surface is disposed along substantially an entire length of the second jaw member.

7. The end effector of claim 1, wherein the first jaw member comprises a first proximal tissue-contacting portion, wherein the second jaw member comprises a second proximal tissue-contacting portion, wherein the first positively-angled tissue-contacting surface is disposed along the first proximal tissue-contacting portion of the first jaw member, and the second positively-angled tissue-contacting surface is disposed along the second proximal tissue-contacting portion of the second jaw member.

8. The end effector of claim 7, wherein the first jaw member comprises a first distal textured portion adjacent to the first proximal tissue-contacting portion, and wherein the second jaw member comprises a second distal textured portion adjacent to a second proximal tissue-contacting portion.

9. An end effector, comprising:

a first jaw member, comprising;

a first jaw body extending longitudinally along a length of the first jaw member, the first jaw body comprising;

a first planar tissue gripping surface;

a first positively-angled tissue-contacting surface extending from the first planar tissue gripping surface away from the first jaw body; and

a first negatively-angled tissue-contacting surface extending from the first planar tissue gripping surface toward the first jaw body; and

a second jaw member, wherein at least one of the first jaw member and the second jaw member is movable relative to the other one of the first jaw member and the second jaw member between an open position and a closed position, and wherein the second jaw member comprises;

a second jaw body extending longitudinally along a length of the second jaw member, the second jaw body comprising;

a second planar tissue gripping surface;

a second positively-angled tissue-contacting surface extending from the second planar tissue gripping surface away from the second jaw body and toward the first jaw body; and

a second negatively-angled tissue-contacting surface extending from the second planar tissue gripping surface toward the second jaw body and away from the first jaw body;

at least one electrode disposed onto at least one of the first jaw body and the second jaw body, wherein the at least one electrode is configured to deliver RF energy to tissue captured between the first jaw body and the second jaw body; and

wherein the first positively-angled tissue-contacting surface is parallel to the first negatively-angled tissue-contacting surface, and wherein the second positively-angled tissue-contacting surface is parallel to the second negatively-angled tissue-contacting surface.