| 摘要 |
The present invention provides an improved system for producing metal stents with a fine precision structure cut from a small diameter, thin-walled, cylindrical tube. The tubes are fixtured under a laser and positioned utilizing a computer-generated signal to move the tube in a very intricate and precise pattern around an X, Y, A and B axis relative to the cutting beam, which is focused by movement relative to a lens along a Z-axis. The stent is cut from small diameter tubing held between a collet and clamp, one of which is periodically opened and the other reciprocably moved to position a small length of tubing, sequentially beneath the cutting head. A water system is incorporated in the apparatus to remove debris falling into the interior of the cut tube and to push discrete portions of the cut tube (or stents) into a parts catcher to separate the stent from the uncut portion of the tube.
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