Veno-merse/harvester device

• US 10,172,599 B2
• Filed: 12/29/2014
• Issued: 01/08/2019
• Est. Priority Date: 12/19/2011
• Status: Active Grant

• Current Assignee: Heshmat Majlessi
• Original Assignee: Heshmat Majlessi
• Inventors: Majlessi, Heshmat
• Primary Examiner(s): Neal, Timothy J
• Assistant Examiner(s): WOO, JAE KYUN
• Application Number:
  US14/583,786
• Publication Number:
  US 20150238176A1
• Time in Patent Office: 1,471 Days
• Field of Search: 600127, 600153, 600156, 600158, 600183, 606109
• CPC Class Codes: A61B 1/00016 using wireless means
• CPC Class Codes: A61B 1/00045 Display arrangement
• CPC Class Codes: A61B 1/00087 Tools A61B17/00234 takes precedence
• CPC Class Codes: A61B 1/044 for absorption imaging
• CPC Class Codes: A61B 1/05 characterised by the image sensor, e.g. camera, being in the distal end portion
• CPC Class Codes: A61B 1/0676 at distal tip of an endoscope
• CPC Class Codes: A61B 17/00008 Vein tendon strippers tube strippers A61M1/83
• 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 17/3203 Fluid jet cutting instruments
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• CPC Class Codes: A61B 2017/00296 mounted on an endoscope
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61B 90/361 Image-producing devices, e.g. surgical cameras
• CPC Class Codes: A61F 2/062 Apparatus for the production of blood vessels made from natural tissue or with layers of living cells prostheses made from natural tissue or living cells A61L27/507
• CPC Class Codes: A61M 19/00 Local anaesthesia syringes therefor A61M5/00; Hypothermia A61M5/42 takes precedence; cooling blood in a bypass of the arterial system A61M1/36

Abstract

A veno-merse/harvester device having a handle portion, a hollow shaft portion, and a cutting portion. A fixed cannula system incorporated in the device improves the hydrostatic pressure, which allows efficient hydro-dissection with less retrograde leak of tumescent fluid and facilitates the separation of the vein from surrounding tissues with less bleeding. The veno-merse/harvester device may incorporate a camera system to allow direct visualization of the side branches to be ligated during a procedure. The self-adjustable cutting tip facilitates the forward advancement of the veno-merse/harvester device safely over a dilated portion of a vein.

Claims

1. A device for removing a saphenous vein from the body of patient comprising:

a. a handle portion having first and second ends;

b. a hollow shaft portion extending from said second end of said handle portion, said shaft portion having a distal end;

c. a cutting portion extending from said distal end of said hollow shaft portion and forming a circular cutting tip defining an axis, said cutting portion being formed of a plurality of at least partially overlapping adjoining cutting sections circumferentially arranged about said axis, said cutting sections being hingedly or pivotably connected to each other at proximate ends thereof to allow said cutting sections to freely move radially inwardly towards said axis and radially outwardly away from said axis in response to external forces, decreasing the size of said circular cutting tip with maximum predetermined overlap of said adjoining cutting sections when radially inwardly-directed forces are applied to said cutting sections while allowing said cutting sections to be urged radially outwardly away from said axis to reduce overlap of adjoining cutting sections and increase the size of said circular tip in response to outwardly-directed forces applied to said cutting sections, whereby movement of said cutting portion along a saphenous vein within a saphenous tunnel causes the size of said circular cutting tip to self-adjust depending on the forces acting on said cutting sections as said cutting portion is moved along the vein between the vein and the saphenous tunnel through which the vein passes.

2. A device as defined in claim 1, wherein said cutting portion has a outwardly tapered shape.

3. A device as defined in claim 2 wherein said outwardly tapered shape is a substantially frusto-conical shape.