Bioabsorbable Polymeric Medical Device
First Claim
Patent Images
1. A bioabsorbable and flexible scaffold circumferential about a longitudinal axis so as to form a tube, said tube having a proximal open end and a distal open end, and being expandable from an unexpanded form to an expanded form, and being crimpable, said scaffold having a patterned shape in expanded form comprising:
- a) a plurality of first meandering strut patterns, each of said first meandering strut pattern being interconnected to one another to form an interconnected mesh pattern circumferential about said longitudinal axis, andb) at least two second strut patterns nested within said interconnected mesh pattern, each of said second strut patterns comprising a hoop circumferential about said longitudinal axis, said hoop having an inner surface proximal to said longitudinal axis and an outer surface distal to said longitudinal axis, said hoop inner and outer surfaces about their circumferences being orthogonal to said longitudinal axis and within substantially the same plane.
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Abstract
In embodiments there is described a cardiovascular tube-shaped lockable and expandable bioabsorbable scaffold having a low immunogenicity manufactured from a crystallizable bioabsorbable polymer composition or blend.
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Citations
29 Claims
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1. A bioabsorbable and flexible scaffold circumferential about a longitudinal axis so as to form a tube, said tube having a proximal open end and a distal open end, and being expandable from an unexpanded form to an expanded form, and being crimpable, said scaffold having a patterned shape in expanded form comprising:
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a) a plurality of first meandering strut patterns, each of said first meandering strut pattern being interconnected to one another to form an interconnected mesh pattern circumferential about said longitudinal axis, and b) at least two second strut patterns nested within said interconnected mesh pattern, each of said second strut patterns comprising a hoop circumferential about said longitudinal axis, said hoop having an inner surface proximal to said longitudinal axis and an outer surface distal to said longitudinal axis, said hoop inner and outer surfaces about their circumferences being orthogonal to said longitudinal axis and within substantially the same plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A stent having an unexpanded configuration and an expanded configuration;
- an outer tubular surface and an inner tubular surface, said stent comprising;
a plurality of biodegradable, paired, separate circumferential bands having a pattern of distinct undulations in an unexpanded configuration and substantially no undulations in an expanded configuration, said undulations of said biodegradable, paired, separate circumferential bands in said stent in an unexpanded state being incorporated into a substantially planar ring in an expanded state; and a plurality of biodegradable interconnection structures spanning between each pair of circumferential bands and connected to multiple points on each band of said paired bands. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
- an outer tubular surface and an inner tubular surface, said stent comprising;
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25. A biosorbable and flexible scaffold circumferential about a longitudinal axis and substantially forming a tube, said tube having a proximal open end and a distal open end, and being crimpable and expandable, and comprising in expanded form:
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a) at least two rings circumferential about said longitudinal axis, said rings having an inner surface proximal to said longitudinal axis, an outer surface distal to said longitudinal axis, a top surface proximal to said proximal open end and a bottom surface proximal to said distal open end, said ring inner and outer surfaces about their circumferences being orthogonal to said longitudinal axis and within substantially the same plane, and b) a plurality of meandering strut patterns located between said at least two rings and circumferential coursing about said longitudinal axis;
said plurality of meandering strut patterns connected to said rings at least two connection points on the circumference of each ring, and each connection point on the circumference of the ring on both said top ring surface and said bottom ring surface;wherein each of said connection points with any particular ring is symmetrical in structure above and below the upper and lower surface of said ring. - View Dependent Claims (26, 27, 28, 29)
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Specification