Laser adjustable suture

Details Laser adjustable suture Laser adjustable suture

1994-06-27

1995-11-07

Jackson, Gary

Surgery

Instruments

Suture or ligature

606215, 606232, A61B 1704

Patent

active

054644240

ABSTRACT:
A surgical suture having an elastic component that contracts under the application of laser energy to affect tightening of the suture. In one preferred embodiment the elastic component is a dome portion of a rivet. A first rivet has a concave dome portion and is attached to one end of a suture and a second rivet has a convex dome portion and is attached to the opposite end of the suture. Application of appropriate laser energy to either the concave or convex dome cause the dome to flatten thereby either loosening or tightening the suture. In another embodiment, the suture is formed of concentric fibers having a relatively non-elastic outer clad and a relatively elastic inner core. Application of laser energy to the clad causes the suture to elongate and loosen. Application of appropriate laser energy to the elastic core causes the inner core to contract and tighten the suture. In another embodiment, the suture has alternating segments of elastic and non-elastic material. Application of laser energy to the elastic material segment contracts the suture and application of laser energy to the non-elastic segments elongates and loosens the suture.

REFERENCES:
patent: 3126680 (1964-03-01), Baird et al.
patent: 3359193 (1967-12-01), Pinner et al.
patent: 3372100 (1968-03-01), Charlesby et al.
patent: 4596728 (1986-06-01), Yang et al.
"Biaxial Orientation", Encyclopedia of Polymer Science & Technology, Interscience Publishers, John Wiley & Sons, vol. II, 1969.

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