DEVICE AND METHOD FOR TACKING PLAQUE TO BLOOD VESSEL WALL

• US 20140194967A1
• Filed: 12/10/2013
• Published: 07/10/2014
• Est. Priority Date: 12/12/2007
• Status: Active Grant

• Current Assignee: Intact Vascular, Inc. (Koninklijke Philips N.V.)
• Original Assignee: Intact Vascular, Inc. (Koninklijke Philips N.V.)
• Inventors: Schneider, Peter, Giasolli, Robert M.
• Granted Patent: US 10,835,395 B2
• Time in Patent Office: Days
• US Class Current: 623/1.2
• CPC Class Codes: A61F 2/844 folded prior to deployment
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2/86 Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• 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 2/92 Stents in the form of a rolled-up sheet expanding after insertion into the vessel , e.g. with a spiral shape in cross-section
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm
• CPC Class Codes: A61F 2002/825 having longitudinal struts
• CPC Class Codes: A61F 2002/826 more than one stent being applied sequentially
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2002/91583 by a bridge, whereby at least one of its ends is connected along the length of a strut between two consecutive apices within a band
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0066 : stapled
• CPC Class Codes: A61F 2230/005 : Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 : V-shaped
• CPC Class Codes: A61F 2250/0067 : Means for introducing or releasing pharmaceutical products into the body
• CPC Class Codes: A61L 31/16 : Biologically active materials, e.g. therapeutic substances A61L31/047 takes precedence

Abstract

A tack device for holding plaque against blood vessel walls in treating atherosclerotic occlusive disease can be formed as a thin, annular band of durable, flexible material. The tack device may also have a plurality of barbs or anchoring points on its outer annular periphery. The annular band can have a length in the axial direction of the blood vessel walls that is about equal to or less than its diameter as installed in the blood vessel. A preferred method is to perform angioplasty with a drug eluting balloon as a first step, and if there is any dissection to the blood vessel caused by the balloon angioplasty, one or more tack devices may be installed to tack down the dissected area of the blood vessel surface.

Claims

1. (canceled)

2. A method of further treating atherosclerotic occlusive disease in a blood vessel after a balloon angioplasty, comprising:

advancing a plurality of tacks in a compressed state to a plaque dissection at a treatment area in a blood vessel after a balloon angioplasty has been performed at the treatment area, each of the tacks of the plurality of tacks comprising an annular band and a plurality of barbs on an outer annular periphery, and extending annularly around a longitudinal axis and extending longitudinally between a distal most end and a proximal most end which defines a tack width;

expanding a first tack of the plurality of tacks to hold the plaque dissection against a wall of the blood vessel; and

expanding a second tack of the plurality of tacks to hold the plaque dissection against the wall of the blood vessel, the second tack spaced away from the first tack a distance equal to at least the tack width of the second tack such that a portion of the treatment area between the first and second tacks that has been treated by the balloon angioplasty includes diseased tissue that is not covered by a tack.

3. The method of claim 2, wherein expanding the first tack comprises allowing the first tack to self-expand.

4. The method of claim 2, wherein the width of the tack is about equal to or less than its diameter when expanded in a blood vessel.

5. The method of claim 2, wherein each of the tacks of the plurality of tacks further comprise a pair of concentric rings spaced apart coaxially from each other and connected by one or more longitudinally extending bridge members.

6. The method of claim 2, wherein the first and second tacks and any additional tacks are only applied where specific holding forces are needed to either stabilize the treatment area or hold pieces of plaque out of the way of blood flow in the treatment area.

7. The method of claim 2, wherein only half of the treatment area that has been treated by the balloon angioplasty is covered with tacks.

8. The method of claim 2, wherein less than half of the treatment area that has been treated by the balloon angioplasty is covered with tacks.

9. The method of claim 2, further comprising delivering plaque treatment medication to the blood vessel with at least one of the first tack and the second tack.

10. The method of claim 2, further comprising expanding one or more additional tacks at a damage, disruption, dissection, or irregularity in the blood vessel caused by the balloon angioplasty, the one or more additional tacks holding down the damaged, disrupted, dissected, or irregular blood vessel surface and each tack spaced away from all other tacks by at least the width of the tack.

11. A method of further treating atherosclerotic occlusive disease in a blood vessel after a balloon angioplasty, comprising:

advancing a plurality of tacks to a treatment area in a blood vessel after a balloon angioplasty has been performed at the treatment area, each of the tacks of the plurality of tacks having a distal most end and a proximal most end along a longitudinal axis, and having a tack width defined by the distance between the distal most end and the proximal most end;

expanding a first tack of the plurality of tacks against a wall of the blood vessel at the treatment area; and

expanding a second tack of the plurality of tacks against the wall of the blood vessel at the treatment area, the second tack spaced away from the first tack a distance equal to at least the tack width of the second tack such that a portion of the treatment area between the first and second tacks that has been treated by the balloon angioplasty includes diseased tissue that is not covered by a tack.

12. The method of claim 11, wherein expanding the first tack comprises allowing the first tack to self-expand.

13. The method of claim 11, wherein the width of the tack is about equal to or less than its diameter when expanded in a blood vessel.

14. The method of claim 11, wherein each of the tacks of the plurality of tacks further comprise a pair of concentric rings spaced apart coaxially from each other and connected by one or more longitudinally extending bridge members.

15. The method of claim 11, wherein the first and second tacks and any additional tacks are only applied where specific holding forces are needed to either stabilize the treatment area or hold pieces of plaque out of the way of blood flow in the treatment area.

16. The method of claim 11, wherein only half of the treatment area that has been treated by the balloon angioplasty is covered with tacks.

17. The method of claim 11, wherein less than half of the treatment area that has been treated by the balloon angioplasty is covered with tacks.

18. The method of claim 11, further comprising delivering plaque treatment medication to the blood vessel with at least one of the first tack and the second tack.

19. The method of claim 11, further comprising expanding one or more additional tacks at a damage, disruption, dissection, or irregularity in the blood vessel caused by the balloon angioplasty, the one or more additional tacks holding down the damaged, disrupted, dissected, or irregular blood vessel surface and each tack spaced away from all other tacks by at least the width of the tack.