Bioabsorbable elongated member

• US 20080071299A1
• Filed: 09/20/2007
• Published: 03/20/2008
• Est. Priority Date: 09/20/2006
• Status: Abandoned Application

• Current Assignee: Bioretec Oy
• Original Assignee: Bioretec Oy
• Inventors: Partio, Esa, Tormala, Pertti, Allinniemi, Timo
• Application Number:
  US11/902,308
• Publication Number:
  US 20080071299A1
• Time in Patent Office: Days
• US Class Current: 606/151
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• CPC Class Codes: A61B 17/82 for bone cerclage apparatus for manipulating wires or straps A61B17/8861; wires, bands or straps other than cerclage A61B17/842
• CPC Class Codes: A61B 17/848 Kirschner wires, i.e. thin, long nails
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable, resorptive for implantable prostheses A61F2210/0004
• CPC Class Codes: A61B 2017/06176 with protrusions, e.g. barbs
• CPC Class Codes: A61B 2017/0619 thermoplastic, e.g. for bonding, welding, fusing or cutting the suture by melting it suture cutters A61B17/0467; ultrasonic cutters A61B17/320068; electrically heated instruments A61B18/08

Abstract

A bioabsorbable elongated member including a first end and a second end and an elongated part therebetween. The elongated part includes a front end, a back end and a target point in which the front end terminates and the back end begins. The bioabsorbable elongated member possesses a predetermined orientation. The orientation of the bioabsorbable elongated member is alterable so that a bulge is formed in the bioabsorbable elongated member by mechanical, thermal or thermomechanical straining of the elongated member at the target point. The bulge forms a local stopper of the bioabsorbable elongated member, or a part of a local stopper, or a bending point of the bioabsorbable elongated member. A method for forming a local stopper, a part of a local stopper, or a bending point in a bioabsorbable elongated member.

Claims

1. A bioabsorbable elongated member, comprising:

a first end;

a second end; and

an elongated part therebetween, the elongated part comprising a front end, a back end and a target point in which the front end terminates and the back end begins, the bioabsorbable elongated member possessing a predetermined orientation, wherein the orientation of the bioabsorbable elongated member is alterable so that a bulge is formed in the bioabsorbable elongated member by straining the elongated member mechanically, thermally or thermomechanically at the target point, the bulge forming a local stopper of the bioabsorbable elongated member, or a part of a local stopper, or a bending point of the bioabsorbable elongated member.

2. The bioabsorbable elongated member according to claim 1, wherein the bioabsorbable elongated member is radially expandable so that a bulge is formed in the bioabsorbable elongated member by moving the front end and the back end repeatedly with regard to each other at the target point, the bulge forming a local stopper of the bioabsorbable elongated member, or a part of a local stopper, or a bending point of the bioabsorbable elongated member.

3. The bioabsorbable elongated member according to claim 1, wherein the bioabsorbable elongated member is radially expandable so that a bulge is formed in the bioabsorbable elongated member by heating the elongated member at the target point, the bulge forming a local stopper of the bioabsorbable elongated member, or a part of a local stopper, or a bending point of the bioabsorbable elongated member.

4. The bioabsorbable elongated member according to claim 1, wherein in that the bioabsorbable elongated member is radially expandable so that a bulge is formed in the bioabsorbable elongated member by mechanical straining and heating of the elongated member at the target point, the bulge forming a local stopper of the bioabsorbable elongated member, or a part of a local stopper, or a bending point of the bioabsorbable elongated member.

5. The bioabsorbable elongated member according to claim 1, further comprising:

a shaft.

6. The bioabsorbable elongated member according to claim 1, wherein the bioabsorbable elongated member comprises branches.

7. The bioabsorbable elongated member according to claim 1, wherein the bioabsorbable elongated member comprises a band.

8. The bioabsorbable elongated member according to claim 7, wherein the band comprises a loop at one end of the band.

9. The bioabsorbable elongated member according to claim 1, wherein the bioabsorbable elongated member comprises a separate tightening ring or a separate retaining plate.

10. The bioabsorbable elongated member according to claim 1, wherein the bioabsorbable elongated member comprises a needle or a bore bit.

11. The bioabsorbable elongated member according to claim 1, wherein the bioabsorbable elongated member comprises a copolymer of lactide and glycolide.

12. The bioabsorbable elongated member according to claim 11, wherein the bioabsorbable elongated member comprises 70 to 85 wt.-% of lactide and 15 to 30 wt.-% glycolide.

13. A method for forming a local stopper, a part of a local stopper, or a bending point in a bioabsorbable elongated member comprising a front end and a back end, the method comprising

determining a target point where the front end terminates and the back end begins, and

altering the orientation of the bioabsorbable elongated member so that a bulge is formed in the bioabsorbable elongated member by mechanical, thermal or thermomechanical straining of the elongated member at the target point, the bulge forming a local stopper of the bioabsorbable elongated member, or a part of a local stopper, or a bending point of the bioabsorbable elongated member.

14. The method according to claim 13, further comprising:

determining a target point where the front end terminates and the back end begins, and

moving the front end and the back end repeatedly with regard to each other at the target point, thereby forming a bulge used as the local stopper, the part of the local stopper, or the bending point.

15. The method according to claim 13, wherein before forming the bulge, a tightening ring or a retaining plate is inserted on the bioabsorbable elongated member.

16. The method according to claim 13, wherein after forming the bulge, the excess of the bioabsorbable elongated member is cut and/or pressed down.