Stent and method of making same
AssigneeVactronix Scientific, LLC
InventorsScott P. Carpenter, Christian G. Palmaz
Life of this patent
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Abstract
A stent for vascular interventions having a hybrid open cell geometry. Variants of the stent include bare metal stents and drug-eluting stents. Embodiments of the stent include end projections for radiopaque markers or a discontinuous partial radiopaque coating on low-stress or low-strain regions of the peripheral stent. The stents of the invention are characterized by having thin walls, nested rows of struts, high expansion ratio, high and uniform radial force over entire diametric size and length of device, crush resistance up to and including about 90% of its fully expanded diameter, high fatigue resistance and high corrosion resistance.
Claims28
A stent having an outer abluminal surface and an inner luminal surface, comprising
- a. A plurality of generally sinusoidal circumferential ring members having peaks and valleys;
- b. A plurality of bridge members interconnecting adjacent pairs of sinusoidal circumferential ring members;
- c. A plurality of volume-enhancing features formed in or on the outer abluminal surface of the stent;
- and
- d. A drug eluting layer covering the entire outer abluminal surface of the stent and at least partially filling the plurality of volume-enhancing features.
A method of making a stent, comprising the steps of:
- a. Providing a stent hypotube;
- b. Patterning the stent hypotube with a stent pattern;
- c. Forming a plurality of volume-enhancing features on an outer abluminal surface of the stent pattern;
- d. Releasing the stent pattern from the stent hypotube;
- and
- e. Coating the outer abluminal surface of the stent pattern with a drug-release coating.
Dependencies are inferred from the claim text.