Biodegradable stent with enhanced fracture toughness

• US 20140107761A1
• Filed: 10/09/2013
• Published: 04/17/2014
• Est. Priority Date: 07/26/2004
• Status: Abandoned Application

• Current Assignee: Abbott Cardiovascular Systems Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Cardiovascular Systems Incorporated (Abbott Laboratories Incorporated)
• Inventors: Gale, David C., Huang, Bin, Limon, Timothy A., Gueriguian, Vincent J., Abbate, Anthony J., Kleine, Klaus, Schaible, Stephen, Durcan, Jonathan P., Glauser, Thierry, Steichen, Bethany, Oberhauser, James, Gada, Manish, Kleiner, Lothar, Kossuth, Mary Beth, Wang, Yunbing, Castro, Daniel, Wrolstad, David
• Application Number:
  US13/998,194
• Publication Number:
  US 20140107761A1
• Time in Patent Office: Days
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/91566 connected trough to trough
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61L 31/06 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds A61L31/041 takes precedence
• CPC Class Codes: A61L 31/14 Materials characterised by their function or physical properties , e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
• CPC Class Codes: B29C 2049/7831 characterised by pressure values or ranges
• CPC Class Codes: B29C 2793/0009 Cutting out
• CPC Class Codes: B29C 2949/08 Preforms made of several individual parts, e.g. by welding or gluing parts together
• CPC Class Codes: B29C 35/045 using gas or flames
• CPC Class Codes: B29C 49/0005 characterised by the material
• CPC Class Codes: B29C 49/14 Clamps
• CPC Class Codes: B29C 49/4823 with incorporated heating or cooling means
• CPC Class Codes: B29C 55/24 radial
• CPC Class Codes: B29C 69/001 a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts for reinforced material B29C70/545; B29C49/4278, B29C51/268 take precedence
• CPC Class Codes: B29K 2067/00 : Use of polyesters or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2067/046 : PLA, i.e. polylactic acid or polylactide
• CPC Class Codes: B29K 2105/258 : Tubular
• CPC Class Codes: B29K 2995/006 : Bio-degradable, e.g. bioabsorbable, bioresorbable or bioerodible
• CPC Class Codes: B29L 2031/7534 : Cardiovascular protheses
• CPC Class Codes: C08L 67/04 : Polyesters derived from hydroxycarboxylic acids, e.g. lactones C08L67/06 takes precedence

Abstract

Stents and methods of manufacturing a stents with enhanced fracture toughness are disclosed.

Claims

1. A stent comprising a cylindrically aligned bending element formed by a first bar arm and a second bar arm, the angle between the bar arms being greater than about 90°

, wherein the stent is fabricated from a tube radially expanded by at least about 400%.