BALLOON CATHETER WITH NON-DEPLOYABLE STENT

• US 20100121372A1
• Filed: 01/26/2010
• Published: 05/13/2010
• Est. Priority Date: 11/09/2001
• Status: Active Grant

• Current Assignee: Spectranetics Corporation (Koninklijke Philips N.V.)
• Original Assignee: Angioscore Incorporated (Koninklijke Philips N.V.)
• Inventors: Farnan, Robert C.
• Granted Patent: US 9,375,328 B2
• Time in Patent Office: Days
• US Class Current: 606/194
• 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 2002/9583 Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
• CPC Class Codes: A61F 2230/0058 X-shaped
• CPC Class Codes: A61M 2025/1086 having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
• CPC Class Codes: A61M 2025/109 having balloons for removing solid matters, e.g. by grasping or scraping plaque, thrombus or other matters that obstruct the flow
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

An angioplasty balloon including a non-deployable stent to prevent or reduce the potential for slippage of the inflated balloon with respect to the vessel wall being treated. The balloon includes a non-deployable stent that is adapted to be secured to the balloon or angioplasty balloon catheter. The stent has a proximal end, a distal end, and at least three radially-spaced struts, each , each strut connecting the proximal end to the distal end and having one or more bends that allow expansion of the strut to accommodate the inflation of the balloon. The stent is made or a material so that the stent collapses upon deflation of the balloon.

Claims

1. A method for inflating an angioplasty balloon on a catheter shaft, said method comprising:

disposing the angioplasty balloon in a non-deployable stent having at least three longitudinally aligned radially spaced struts, wherein the struts are attached to the balloon or the catheter shaft to stay with the balloon as the balloon is inflated;

inflating the angioplasty balloon to radially expand the struts, wherein each strut as one or more bends to accommodate longitudinal expansion as the strut radially expands; and

deflating the angioplasty balloon, wherein the non-deployable stent is made of a material having memory so that the stent will radially collapse and the struts longitudinally shorten upon deflation of the balloon.

2. A method as in claim 1, wherein the balloon is inflated during an angioplasty procedure to provide both controlled cracking of vessel occlusion and gripping of vessel wall.

3. A method as in claim 2, wherein the balloon is inflated at a pressure from 8 to 20 atmospheres.

4. A method as in claim 1, wherein the bends in the struts are sinusoidal and have a linear length sized to allow the struts to expand longitudinally when the balloon is inflated.