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1. (WO1997015236) IMPROVED SURGICAL LASER HANDPIECE
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CLAIMS
I. A surgical laser handpiece comprising:
an outer barrel having an inner chamber;
an inner zoom barrel movable in said chamber relative to said outer barrel;
at least a first lens device in said zoom barrel for propagating and focusing a laser beam; and
a drive member externally accessible on said outer barrel for moving said zoom barrel with one hand relative to said outer barrel for varying the focus of the laser beam.

2. The surgical laser handpiece of claim 1 in which there is a second lens device mounted in said outer barrel optically aligned with said first lens device.

3. The surgical laser handpiece of claim 1 in which said drive member includes a rotatable wheel mounted on said outer barrel and a friction drive surface on said zoom barrel engaged with said wheel.

4. The surgical laser handpiece of claim 1 in which said drive member includes a slot in said outer barrel and a tab on said zoom barrel extending into said slot.

5. A surgical laser handpiece comprising:
a tip assembly;
a barrel section for supporting said tip assembly and having a lens device for propagating and focusing a laser beam at, near or beyond the tip of said tip assembly; and
a smoke evacuator conduit extending along said tip assembly and teπninating in an intake port proximate said tip and having an exhaust port connectable to a vacuum source for drawing out smoke and laser plume at the generation site.

6. The surgical laser handpiece of claim 5 in which said tip includes a guide member for gauging the point of focus of the laser beam.

7. The surgical laser handpiece of claim 6 in which said tip includes a backstop on said guide member for preventing further propagation of the laser beam.

8. The surgical laser handpiece of claim 1 further including a purge tube for introducing a purge gas into said barrel section to drive the smoke and plume away from said lens device toward said tip.