Controlled tubing expansion and surface engineering
The disclosure provides methods for expanding a polymeric tube using one or more deformable members. The methods can involve disposing the polymeric tube within the one or more deformable members and radially deforming the polymeric tube and the one or more deformable members. The rate of deformation of the polymeric tube and/or the extent of deformation of the one or more polymeric tubes can advantageously be controlled along one or more axes by at least one of the one or more deformable members.
1. A molecularly oriented polymeric tube, wherein the molecularly oriented polymeric tube exhibits a standard deviation of average wall thickness measured at discrete cross sections of the molecularly oriented polymeric tube that is about 9.7% or less of the overall average wall thickness of the molecularly oriented polymeric tube.
2. The molecularly oriented polymeric tube of claim 1 , wherein the molecularly oriented polymeric tube exhibits a standard deviation of average wall thickness measured at discrete cross sections of the molecularly oriented polymeric tube that is less than 1.5% of the overall average wall thickness of the molecularly oriented polymeric tube.
3. The molecularly oriented polymeric tube of claim 1 , wherein the molecularly oriented polymeric tube exhibits a standard deviation of average wall thickness measured at discrete cross sections of the molecularly oriented polymeric tube that is less than 1.0% of the overall average wall thickness of the molecularly oriented polymeric tube.
4. The molecularly oriented polymeric tube of claim 1 , wherein the molecularly oriented polymeric tube exhibits a standard deviation of average wall thickness measured at discrete cross sections of the molecularly oriented polymeric tube that is less than 0.5% of the overall average wall thickness of the molecularly oriented polymeric tube.
5. The molecularly oriented polymeric tube of claim 1 , wherein:
the discrete cross sections are measured at 10 or more locations down a length of the molecularly oriented polymeric tube, and
the distance between each of the 10 or more locations is at least 9% of a total length of the molecularly oriented polymeric tube.
6. The molecularly oriented polymeric tube of claim 5 , wherein the length of the molecularly oriented polymeric tube is at least about 4 inches.
7. The molecularly oriented polymeric tube of claim 6 , wherein the length of the molecularly oriented polymeric tube is at least about 8 inches.
8. The molecularly oriented polymeric tube of claim 6 , wherein the molecularly oriented polymeric tube is converted into one or more stents by forming one or more stent patterns from the molecularly oriented polymeric tube.
9. The molecularly oriented polymeric tube of claim 8 , wherein the one or more stents are formed from the molecularly oriented polymeric tube by laser cutting.
10. The molecularly oriented polymeric tube of claim 1 , wherein the molecularly oriented polymeric tube has a surface corresponding to a surface characteristic of a deformable member used in connection with an expansion of a polymeric tube to obtain the molecularly oriented polymeric tube.
11. The molecularly oriented polymeric tube of claim 10 , wherein the surface of the molecularly oriented polymeric tube corresponds to an impression from a morphology of the deformable member.
12. The molecularly oriented polymeric tube of claim 11 , wherein the morphology of the deformable member corresponds to a node-fibril morphology of expanded polytetrafluoroethylene.
13. The molecularly oriented polymeric tube of claim 12 , wherein the water contact angle ranges from about 80 degrees to about 85 degrees.
14. The molecularly oriented polymeric tube of claim 1 , wherein the molecularly oriented polymeric tube is bioabsorbable.
15. The molecularly oriented polymeric tube of claim 14 , wherein the molecularly oriented polymeric tube comprises one or more of a polyester, a poly α-hydroxy ester, a polyetherester, a polylactide, a polycaprolactone, a polyglycolide, a poly(dioxanone), a poly trimethylene carbonate, a poly(hydroxybutyrate), a poly(anhydride), an aliphatic polycarbonate, a poly(orthoester), a poly(amino acid), a poly(ethylene oxide), a poly (ethylene glycol), and stereoisomers, or copolymers or blends thereof.
16. The molecularly oriented polymeric tube of claim 1 , wherein an average wall thickness of the molecularly oriented polymeric tube is less than 0.0040 inches.
17. The molecularly oriented polymeric tube of claim 16 , wherein the average wall thickness is less than 0.0035 inches.
18. The molecularly oriented polymeric tube of claim 16 , wherein the average wall thickness is less than 0.015 inches.
19. The molecularly oriented polymeric tube of claim 16 , wherein an outside diameter of the molecularly oriented polymeric tube is less than about 0.5000 inches.
20. The molecularly oriented polymeric tube of claim 19 , wherein the outside diameter of the molecularly oriented polymeric tube is about 0.255 inches or less.
21. The molecularly oriented polymeric tube of claim 19 , wherein the outside diameter of the molecularly oriented polymeric tube is about 0.1195 inches or less.
22. The molecularly oriented polymeric tube of claim 1 , wherein an outer surface of the molecularly oriented polymeric tube has a repeatable pattern imprinted thereon.
23. The molecularly oriented polymeric tube of claim 22 , wherein the repeatable pattern has an average distance of about 34 micrometers or less between nodes.
24. The molecularly oriented polymeric tube of claim 1 , wherein a contact angle of an outer surface of the molecularly oriented polymeric tube based at least in part on a deformable member in which a polymeric tube is expanded to obtain the molecularly oriented polymeric tube.