Method and apparatus for direct laser cutting of metal stents

Details Method and apparatus for direct laser cutting of metal stents Method and apparatus for direct laser cutting of metal stents

1997-01-15

1998-06-02

Buiz, Michael

Surgery

Instruments

Internal pressure applicator

606195, A61M 2900

Patent

active

057591920

ABSTRACT:
An improved expandable stent for implantation in a body lumen, such as an artery, and an improved method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cut cylindrical elements generally aligned on a common axis and interconnected by one or more interconnective elements, the elements having a rectangular cross-section from cut-to-cut. The individual radially expandable cylindrical elements are disposed in an undulating pattern. The stent is manufactured by direct laser cutting from a single metal tube using a finely focused laser beam passing through a coaxial gas jet structure to impinge on the working surface of the tube as the linear and rotary velocity of the tube is precisely controlled.

REFERENCES:
patent: 4733665 (1988-03-01), Palmaz
patent: 5102417 (1992-04-01), Palmaz
patent: 5514154 (1996-05-01), Lau et al.
patent: 5591197 (1997-01-01), Orth et al.

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