Intravascular devices for treating blood vessels and a method of using such devices

• US 8,758,384 B2
• Filed: 02/07/2011
• Issued: 06/24/2014
• Est. Priority Date: 02/07/2010
• Status: Active Grant

• Current Assignee: VVT Medical Ltd.
• Original Assignee: VVT Medical Ltd.
• Inventors: Brandeis, Zeev
• Primary Examiner(s): Dowe, Katherine
• Assistant Examiner(s): STRANSKY, KATRINA MARIE
• Application Number:
  US13/021,813
• Publication Number:
  US 20110196468A1
• Time in Patent Office: 1,233 Days
• Field of Search: 606/191, 606/192, 606/193, 606/194, 606/195, 606/196, 606/197, 606/198, 606/199, 606/200, 606/213, 606/158
• US Class Current: 606/191
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• 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: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00623 Introducing or retrieving devices therefor
• CPC Class Codes: A61B 2017/00778 Operations on blood vessels A61B2017/22097, A61B2017/320741 take precedence
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• 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 2230/0006 circular
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

A medical implant for occluding a blood vessel. The medical implant comprises a cup shaped elastic blood impermeable membrane sized and shaped for substantially occluding a lumen of a blood vessel, at least one scaffolding element mounted, sized and shaped for being attached at least one blood clot forming in front of the elastic blood impermeable membrane, and at least one anchoring element having a tip directed outward from the center of the cup shaped elastic blood impermeable membrane.

Claims

1. A medical implant for occluding a blood vessel, comprising:

a cup shaped elastic blood impermeable membrane sized and shaped for substantially occluding a lumen of a blood vessel;

at least one scaffolding element mounted, sized and shaped for being attached at least one blood clot forming in front of said elastic blood impermeable membrane; and

at least one anchoring element having a tip directed outward from the center of the cup shaped elastic blood impermeable membrane;

wherein said at least one scaffolding element is extended from said cup shaped elastic blood impermeable membrane along a longitudinal axis traversing a center of a cup shaped space encircled by said cup shaped elastic blood impermeable membrane said at least one scaffolding element comprising a plurality of bended arms connected together at a proximal end and a distal end of the at least one scaffolding element along the longitudinal axis.

2. The medical implant of claim 1, wherein said cup shaped elastic blood impermeable membrane is conical.

3. The medical implant of claim 1, wherein said at least one scaffolding element is mounted in a space encircled by said cup shaped elastic blood impermeable membrane.

4. The medical implant of claim 1, wherein said at least one anchoring element comprises a plurality of hooks set to stick in the inner wall of said lumen.

5. The medical implant of claim 2, further comprising a support element configured to hold said elastic blood impermeable membrane in a conical structure and said at least one scaffolding element in a space encircled by said conical structure.

6. The medical implant of claim 1, wherein said elastic blood impermeable membrane comprises a porous film.

7. The medical implant of claim 1, wherein said elastic blood impermeable membrane comprises a non-woven fabric selected from a group consisting of Polyurethane, Polyethylene, Polyamide and expanded Polytetrafluoroethylene (PTFE).

8. The medical implant of claim 1, further comprising an engagement element for mechanically and detachably connecting said medical implant to a pivot of a delivery device.

9. The medical implant of claim 1, wherein said elastic blood impermeable membrane having a first cup shape in a compressed state and a second cup shape in an uncompressed state, said first cup having a smaller diameter than said second cup shape.

10. The medical implant of claim 1, wherein said at least one anchoring element have a tilted state wherein a distal end thereof is tilted away from a longitudinal axis crossing the center of said cup shaped elastic blood impermeable membrane and a vertical state wherein said at least one anchoring element is proximate to said longitudinal axis.

11. A medical implant for occluding a blood vessel, comprising:

a conical elastic blood impermeable membrane;

at least one scaffolding element extended from a vertex of said conical elastic blood impermeable membrane along a longitudinal axis traversing a center of a conical space encircled by said conical elastic blood impermeable membrane;

said at least one scaffolding element comprising a plurality of bended arms connected together at a proximal end and a distal end of the at least one scaffolding element along the longitudinal axis;

a supporting element for holding said at least one scaffolding element at the center of said conical elastic blood impermeable membrane; and

a plurality of tilted hooks each having a proximal end attached to said supporting element and a distal end tilted outward from a longitudinal axis crossing via the center of said conical elastic blood impermeable membrane.

12. A method for occluding a blood vessel, comprising:

conducting a medical implant having an elastic blood impermeable membrane in a compressed state and at least one scaffolding element to an intravascular target area in a blood vessel;

placing said medical implant in said intravascular target area so that said scaffolding element is extended from said elastic blood impermeable membrane along a longitudinal axis traversing a center of a conical space encircled by said conical elastic blood impermeable membrane;

said at least one scaffolding element comprising a plurality of bended arms connected together at a proximal end and a distal end of the at least one scaffolding element along the longitudinal axis; and

occluding said vessel by spreading said elastic blood impermeable membrane from said compressed state to an uncompressed state in said intravascular target area;

wherein said at least one scaffolding element is sized and shaped to be attached to at least one blood clot formed at said intravascular target area so that said at least one blood clot being firmly attached to said medical implant.

13. The method of claim 12, wherein said at least one scaffolding element induces encapsulation of said medical implant in said intravascular target area.

14. The method of claim 12, wherein said conducting comprises loading said medical implant into a catheter and using said catheter for performing said conducting.

15. The method of claim 14, wherein said loading comprises:

placing said medical implant in an adaptor,

connecting an adaptor to a distal end of a catheter, and

pulling said medical implant into said catheter, and

removing said adaptor from the distal end.

16. The method of claim 15, wherein said pulling comprises pulling said medical implant into a magazine in said catheter.

17. The method of claim 15, wherein said medical implant is stored prior to delivery in a non compressed state.