Stent delivery system having dynamic deployment and methods of manufacturing same
AssigneeMedtronic Vascular, Inc.
InventorMark Wong
Life of this patent
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Abstract
A stent delivery system for dynamic deployment of a stent loaded thereon and a method of manufacturing the system. The stent delivery system includes a balloon catheter with a balloon in a spirally twisted delivery configuration on which a stent is crimped or otherwise loaded. The stent is made from a single, continuous strand of wire formed into a sinusoidal waveform that is wrapped into a helical pattern and joined at selected crowns. Upon inflation of the spirally twisted balloon of the stent delivery system, the stent undergoes dynamic deployment such that the stent in a deployed or expanded configuration has crowns with obtuse deployment angles and crowns with acute deployment angles.
Claims20
A method of manufacturing a stent delivery system for dynamic deployment of a stent comprising:
- twisting an uninflated balloon of a stent delivery catheter into a spirally twisted delivery configuration;
- and
- loading a stent onto the spirally twisted balloon, the stent being made from a single, continuous strand of wire formed into a sinusoidal waveform that defines crowns and struts of the stent, the sinusoidal waveform having been wrapped into a helical pattern and joined at selected crowns to form the stent,
- inflating the balloon, wherein the spirally twisted balloon untwists upon inflation and thereby applies a twisting force to the stent such that the stent undergoes dynamic deployment, and
- wherein the stent in a deployed configuration after dynamic deployment has crowns with obtuse deployment angles and crowns with acute deployment angles.
A method of manufacturing a stent delivery system for dynamic deployment of a stent comprising:
- twisting an uninflated balloon of a stent delivery catheter into a spirally twisted delivery configuration;
- and
- loading a stent onto the spirally twisted balloon, the stent being made from a single, continuous strand of wire formed into a sinusoidal waveform that defines crowns and struts of the stent, the sinusoidal waveform having been wrapped into a helical pattern and joined at selected crowns to form the stent, wherein the step of twisting the balloon provides the spirally twisted balloon with a right-handed spiral and wherein the helical pattern of the stent forms a right-handed helix,
- inflating the balloon, wherein the spirally twisted balloon untwists upon inflation and thereby applies a twisting force to the stent such that the stent undergoes dynamic deployment, and
- wherein the stent in a deployed configuration after dynamic deployment has crowns with obtuse deployment angles and crowns with acute deployment angles.
A method of manufacturing a stent delivery system for dynamic deployment of a stent comprising:
- twisting an uninflated balloon of a stent delivery catheter into a spirally twisted delivery configuration;
- and
- loading a stent onto the spirally twisted balloon, the stent being made from a single, continuous strand of wire formed into a sinusoidal waveform that defines crowns and struts of the stent, the sinusoidal waveform having been wrapped into a helical pattern and joined at selected crowns to form the stent, wherein the step of twisting the balloon provides the spirally twisted balloon with a left-handed spiral and wherein the helical pattern of the stent forms a left-handed helix,
- wherein the spirally twisted balloon is configured to untwist upon inflation and thereby apply a twisting force to the stent such that the stent undergoes dynamic deployment, and
- wherein the stent in a deployed configuration after dynamic deployment is configured to have crowns with obtuse deployment angles and crowns with acute deployment angles.
Dependencies are inferred from the claim text.