Absorbable surgical repair devices

• US 5,342,395 A
• Filed: 01/13/1992
• Issued: 08/30/1994
• Est. Priority Date: 07/06/1990
• Status: Expired due to Term

• Current Assignee: Sherwood Services AG
• Original Assignee: American Cyanamid Co (Pfizer Inc.)
• Inventors: Jarrett, Peter K., Rosati, Louis, Casey, Donald J.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): Jackson, Gary
• Application Number:
  US07/819,701
• Time in Patent Office: 960 Days
• Field of Search: 606/69-71, 606/76, 524/381, 524/411, 524/413, 524/415, 524/450, 524/462, 528/354, 528/359, 528/361, 428/395, 523/105, 523/113
• US Class Current: 606/219
• CPC Class Codes: A61B 17/064 Surgical staples, i.e. penetrating the tissue
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 17/72 Intramedullary pins, nails or other devices A61B17/744 takes precedence
• CPC Class Codes: A61B 17/7291 for small bones, e.g. in the foot, ankle, hand or wrist
• CPC Class Codes: A61B 17/80 Cortical plates , i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable or resorptive
• CPC Class Codes: A61L 31/041 Mixtures of macromolecular compounds
• 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 31/129 containing macromolecular fillers
• CPC Class Codes: A61L 31/148 Materials at least partially resorbable by the body
• CPC Class Codes: C08L 67/04 Polyesters derived from hydroxycarboxylic acids, e.g. lactones C08L67/06 takes precedence

Abstract

A load-bearing, bioabsorbable surgical repair device manufactured from a copolymer having a plurality of first linkages of lactide or lactide/glycolide, and a plurality of second linkages of a polymer having a glass transition temperature below ambient temperature. The second linkages preferably are selected from: 1,3-dioxan-2-one; 1,4-dioxan-2-one; and ε-caprolactone.

Claims

1. A load-bearing, bioabsorbable surgical repair device comprising a tissue fixation device manufactured from a block copolymer having a hard and a soft phase, said hard phase of said copolymer having a plurality of first linkages consisting essentially of about 85 weight percent of the copolymer of lactic acid ester and said soft phase having a plurality of second linkages comprising about 15 weight percent of the copolymer of ε

-caprolactone.

2. A load-bearing, bioabsorbable surgical repair device comprising a fracture fixation device manufactured from a block copolymer having a hard and a soft phase, said hard phase of said copolymer having a plurality of first linkages consisting essentially of about 85 weight percent of the copolymer of lactic acid ester and said soft phase having a plurality of second linkages comprising about 15 weight percent of the copolymer of ε

-caprolactone.

3. A load-bearing, bioabsorbable surgical repair device comprising a tissue fixture device manufactured from a block copolymer having a hard and a soft phase, said hard phase of said copolymer having a plurality of first linkages consisting essentially of about 95 weight percent of the copolymer of lactic acid ester and said soft phase having a plurality of second linkages comprising about 5 weight percent ε

-caprolactone.

5. The device of claim 3 wherein said block copolymer is oriented in at least one direction.

4. A load-bearing bioabsorbable surgical repair device comprising a fracture fixation device manufactured from a block copolymer having a hard and a soft phase, said hard phase of said copolymer having a plurality of first linkages consisting essentially of about 95 weight percent of the copolymer of lactic acid ester and said soft phase having a plurality of second linkages comprising about 5 weight percent ε

-caprolactone.

6. A load-bearing, bioabsorbable surgical repair device comprising a tissue fixation device manufactured from a block copolymer having a hard and a soft phase, said hard phase of said copolymer having a plurality of first linkages consisting essentially of about 90 weight percent of said first linkages of lactic acid ester and about 10 weight percent of said first linkages of glycolic acid ester and said soft phase having a plurality of second linkages comprising about 15 weight percent of the copolymer of ε

-caprolactone.

7. A load-bearing, bioabsorbable surgical repair device comprising a fracture fixation device manufactured from a block copolymer having a hard and a soft phase, said hard phase of said copolymer having a plurality of first linkages consisting essentially of about 90 weight percent of said first linkages of lactic acid ester and about 10 weight percent of said first linkages of glycolic acid ester and said soft phase having a plurality of second linkages comprising about 15 weight percent of the copolymer of ε

-caprolactone.

8. A load-bearing, bioabsorbable surgical repair device comprising a tissue fixation device manufactured from a block copolymer having a hard and a soft phase, said hard phase of said copolymer having a plurality of first linkages consisting essentially of about 90 weight percent of said first linkages of lactic acid ester and about 10 weight percent of said first linkages of glycolic acid ester and said soft phase having a plurality of second linkages, comprising about 15 weight percent of the copolymer of trimethylene carbonate.

9. A load-bearing bioabsorbable surgical repair device comprising a fracture fixation device manufactured from a block copolymer having a hard and a soft phase, said hard phase of said copolymer having a plurality of first linkage consisting essentially of about 90 weight percent of said first linkages of lactic acid ester and about 10 weight percent of said first linkages of glycolic acid ester and said soft phase having a plurality of second linkages, comprising about 15 weight percent of the copolymer of trimethylene carbonate.