METHODS FOR TREATING ABNORMAL GROWTHS IN THE BODY USING A FLOW REDUCING IMPLANT

• US 20150088239A1
• Filed: 10/03/2014
• Published: 03/26/2015
• Est. Priority Date: 03/27/2000
• Status: Active Grant

• Current Assignee: Shockwave Medical, Incorporated
• Original Assignee: Neovasc Medical Ltd. (Neovasc Incorporated)
• Inventors: Ben-Muvhar, Shmuel, Shalev, Ilan, Tsehori, Jonathan, Darvish, Nissim
• Granted Patent: US 9,364,354 B2
• Time in Patent Office: Days
• US Class Current: 623/1.3
• CPC Class Codes: A61B 17/12036 partial occlusion
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/068 Modifying the blood flow model, e.g. by diffuser or deflector
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/9155 Adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2250/0018 differing in elasticity, stiffness or compressibility

Abstract

A flow reducing implant for reducing blood flow in a blood vessel having a cross sectional dimension, the flow reducing implant comprising a hollow element adapted for placement in the blood vessel defining a flow passage therethrough, said flow passage comprising at least two sections, one with a larger diameter and one with a smaller diameter, wherein said smaller diameter is smaller than a cross section of the blood vessel. A plurality of tabs anchor, generally parallel to the blood vessel wall, are provided in some embodiments of the invention.

Claims

1. A method of treating a blood flow problem in a limb of a patient, said method comprising:

identifying a vein in the limb having the blood flow problem;

inserting a flow reducing implant into the vein;

radially expanding the flow reducing implant; and

reducing flow in the vein with the flow reducing implant thereby redistributing blood in the leg and triggering angiogenesis or expansion of existing blood vessels in the leg.