Surgery – Instruments – Suture or ligature
Patent
1992-10-19
1994-12-20
Pellegrino, Stephen C.
Surgery
Instruments
Suture or ligature
606148, 264157, A61B 1706
Patent
active
053742788
ABSTRACT:
A heat tipping method and apparatus for surgical sutures to facilitate inserting the sutures into the barrel ends of surgical needles. The method comprises tensioning the suture, heating a portion of the suture to be heat tipped by blowing a current of hot air across the portion of the suture, and releasing the tension and cutting the portion of the suture to create heat tipped ends. The apparatus comprises a cylindrical drum around which the suture is wound, a concave channel in the drum for delimiting a portion of the suture to be heated, and hot air blowers for heating the delimited portions of the suture to a heat tipping temperature. In another embodiment, the suture is looped and knotted. The loop and/or knot is then heated under such conditions so as to reversibly stiffen the loop and/or knot. Such stiffening facilitates placement and securement of the suture loop during surgical procedures.
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Chesterfield Michael P.
Malinowski Stanley J.
Proto George R.
Wilson Jonathan
Pellegrino Stephen C.
Schmidt Jeffrey A.
United States Surgical Corporation
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