Bioabsorbable polymeric medical device

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.

What is claimed is: 
     
         1 . A flexible scaffold formed from expansion-crystallizable bioabsorbable polymer material comprising:
 a first sinusoidal strut pattern comprising a series of sinusoids;   a nested hoop structure; and   a second sinusoidal strut pattern comprising a series of, said sinusoids of said second sinusoidal strut pattern being shifted from about 0° to about 180° with respect to said sinusoids of said first sinusoidal strut pattern; and   when fully expanded, the first and second sinusoidal strut patterns maintain a sinusoidal shape and the nested hoop structure forms a hoop structure.   
     
     
         2 . The scaffold of  claim 1 , wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are repeated multiple times, one after the other to form the scaffold. 
     
     
         3 . The scaffold of  claim 1 , wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are the same. 
     
     
         4 . The scaffold of  claim 1 , wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are different. 
     
     
         5 . The scaffold of  claim 1 , wherein said second sinusoidal strut pattern is connected to said first sinusoidal strut pattern at at least two points. 
     
     
         6 . The scaffold of  claim 1 , wherein said second sinusoidal strut pattern is connected to said first sinusoidal strut pattern at at least three points. 
     
     
         7 . The scaffold of  claim 1 , wherein said bioabsorbable polymer comprises a poly-lactide polymer. 
     
     
         8 . The scaffold of  claim 1 , wherein said bioabsorbable polymer comprises a base polymer comprising a poly L-lactide moiety, and/or a poly D-lactide moiety, and/or a poly L-lactide-co-PEG moiety, and/or a poly D-lactide-co-PEG moiety, linked with a modifying copolymer thereof, wherein the modifying copolymer comprises poly L(or D)-lactide-co-tri-methylene-carbonate or poly L(or D)-lactide-co-ε-caprolactone. 
     
     
         9 . The scaffold of  claim 1 , wherein the nested hoop structure is located between said first and said second sinusoidal strut patterns. 
     
     
         10 . A biosorbable and flexible scaffold formed from expansion-crystallizable bioabsorbable polymer material comprising:
 a first sinusoidal strut pattern comprising a series of sinusoids;   a nested hoop structure; and   a second sinusoidal strut pattern comprising a series of sinusoids, said sinusoids of said second sinusoidal strut pattern being in phase with respect to said sinusoids of said first sinusoidal strut pattern.   
     
     
         11 . The scaffold of  claim 10 , wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are repeated multiple times, one after the other to form the scaffold. 
     
     
         12 . The scaffold of  claim 10 , wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are the same. 
     
     
         13 . The scaffold of  claim 10 , wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are different. 
     
     
         14 . The scaffold of  claim 10 , wherein said second sinusoidal strut pattern is connected to said first sinusoidal strut pattern at at least two points. 
     
     
         15 . The scaffold of  claim 10  wherein said second sinusoidal strut pattern is connected to said first sinusoidal strut pattern at at least three points. 
     
     
         16 . The scaffold of  claim 10  wherein said bioabsorbable polymer is a poly-lactide polymer. 
     
     
         17 . The scaffold of  claim 10 , wherein said bioabsorbable polymer comprises a base polymer comprising a poly L-lactide moiety, and/or a poly D-lactide moiety, and/or a poly L-lactide-co-PEG moiety, and/or a poly D-lactide-co-PEG moiety, linked with a modifying copolymer thereof, wherein the modifying copolymer comprises poly L(or D)-lactide-co-tri-methylene-carbonate or poly L(or D)-lactide-co-ε-caprolactone.