Endovascular device for entrapment of participate matter and method for use

• US 9,668,849 B2
• Filed: 06/03/2010
• Issued: 06/06/2017
• Est. Priority Date: 12/05/2001
• Status: Active Grant

• Current Assignee: Keystone Heart, Ltd. (Venus Medtech (Hangzhou), Inc.)
• Original Assignee: Keystone Heart, Ltd. (Venus Medtech (Hangzhou), Inc.)
• Inventors: Shimon, Dov V.
• Primary Examiner(s): Nguyen, Victor
• Application Number:
  US12/793,000
• Publication Number:
  US 20110106137A1
• Time in Patent Office: 2,560 Days
• Field of Search: 606108, 606195, 606198, 606200, 623 111, 623 112, 623 115
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• CPC Class Codes: A61B 5/283 Invasive
• CPC Class Codes: A61F 2/0105 Open ended, i.e. legs gathered only at one side
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2230/0095 Saddle-shaped
• CPC Class Codes: A61F 2250/0017 differing in yarn density
• CPC Class Codes: A61F 2250/0023 differing in porosity

Abstract

A method for filtering particulate matter from a blood vessel in a patient, including inserting a device into the blood vessel, the device including at least an outer structure capable of insertion into the blood vessel; and an inner filter anchored to the outer structure, the inner filter having a one-way valve though which a medical instrument may be passed.

Claims

1. An intra-vascular device to prevent emboli in an aortic arch from entering all side branches of said aortic arch, said device comprising:

a cylindrical structure capable of insertion into said aortic arch to cover all said side branches, and said structure comprising two mesh layers; and

a valve formed from said two mesh layers, said valve configured for allowing a medical instrument to pass proximally while preventing emboli to pass distally through said valve;

whereby said cylindrical structure forms a trap for said emboli entering said cylindrical structure distally.

2. The device as in claim 1, wherein said cylindrical structure is a stent that is capable of acting as an external support and secondary physical protection.

3. The device as in claim 1, wherein said cylindrical structure is capable of anchorage to the wall of the aorta.

4. The device as in claim 1, wherein said cylindrical structure is capable of expanding to the size and shape of a vessel.

5. The device as in claim 1, wherein said cylindrical structure is constructed from a metallic material.

6. The device as in claim 1 wherein an inner layer protects only a portion of the area within said cylindrical structure.