Method and apparatus for the minimally invasive harvesting of a saphenous vein and the like

• US 5,817,013 A
• Filed: 03/19/1996
• Issued: 10/06/1998
• Est. Priority Date: 03/19/1996
• Status: Expired due to Term

• Current Assignee: Atricure, Inc., Maquet Cardiovascular LLC (Getinge AB)
• Original Assignee: Enable Medical Corporation (Atricure, Inc.)
• Inventors: Ginn, Richard, Richardson, Ted, Hooven, Mike
• Primary Examiner(s): FLANAGAN, BEVERLY MEINDL
• Application Number:
  US08/618,662
• Time in Patent Office: 931 Days
• Field of Search: 600/101, 600/104, 600/106, 600/107, 600/108, 600/114, 600/153, 600/121, 600/123
• US Class Current: 600/114
• 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 17/00008 Vein tendon strippers tube strippers A61M1/83
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 18/148 having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy
• CPC Class Codes: A61B 2017/00969 used for transplantation
• CPC Class Codes: A61B 2018/00404 Blood vessels other than those in or around the heart
• CPC Class Codes: A61B 2018/00601 Cutting
• CPC Class Codes: A61B 2018/00982 combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
• CPC Class Codes: A61B 2018/1407 Loop

Abstract

A minimally invasive technique for harvesting saphenous veins and the like for use as autografts in coronary artery bypass grafting surgery include a microsurgical instrument adapted to be demountably secured to the distal end of an endoscope. The instrument is inserted through an entry incision in the patient'"'"'s skin, at the end of the endoscope which is used by a surgeon to advance the instrument along the saphenous vein, using the vein as a guide for the instrument. The instrument is tapered to provide initial separation of surrounding tissues from the vein, and cutting means supported by the instrument and viewed via the endoscope allow dissection of all tissues and side branch vessels from the saphenous vein. The instrument further provides a protective hood which prevents tissues or skin from blocking the endoscope. The desired length of saphenous vein is transected and is extracted via the entry incision. The technique minimizes trauma to the patient and to the saphenous vein graft.

Claims

1. Apparatus for harvesting a vein via a minimally invasive incision, including an endoscope and electrically energized tissue dissecting means, comprising:

a guide member for manipulation under the skin along the vein;

an integral electrically energized cutting device comprised of a sharpened cutting blade and an electrically conductive metal;

a tubular endoscope lumen secured within said guide member for slideably supporting a distal end of the endoscope; and

an axial guide slot coaxial to said endoscope lumen and formed within said guide member for receiving the vein and whereby said guide member may be advanced along the vein.

2. The apparatus of claim 1 wherein said electrically energized cutting device is circular and has a cylindrical layer of insulation.

3. The apparatus of claim 2 further comprising a second layer of insulation and a return electrode.

4. The apparatus of claim 1 wherein said guide member has a slanted front face.