Claims
- 1. An apparatus for treating vascular lesions comprising:
- a resonant cavity;
- a neodymium doped solid state gain medium located within the resonant cavity for generating an output having a fundamental frequency;
- a flashlamp for exciting the gain medium;
- a non-linear crystal located within the cavity for doubling the fundamental frequency output of the gain medium; and
- means for energizing the flashlamp with pulses having a duration between 0.5 and 10.0 milliseconds to generate frequency doubled output pulses having a duration between 0.5 milliseconds and 10 milliseconds and having an energy of at least 0.5 joules per pulse.
- 2. An apparatus as recited in claim 1 further including optical means for focusing the fundamental frequency output of the gain medium at a location within the resonant cavity and wherein the non-linear crystal is positioned at that location.
- 3. An apparatus as recited in claim 1 wherein said gain medium is Nd:YAG.
- 4. An apparatus as recited in claim 1 wherein said non-linear crystal is KTP.
- 5. An apparatus as recited in claim 1 wherein said pulses have a repetition rate greater than 1 Hz.
- 6. An apparatus as recited in claim 1 wherein said output pulses have a duration greater than 1.0 milliseconds.
- 7. An apparatus as recited in claim 1 wherein said output pulses have a duration greater than 5.0 milliseconds.
PRIOR APPLICATIONS
This application is a continuation of Ser. No. 369,465, filed on Jan. 6, 1995 now U.S. Pat. No. 5,558,667which is a continuation-in-part of prior application Ser. No. 08/355,512, filed Dec. 14, 1994, now abandoned.
US Referenced Citations (16)
Foreign Referenced Citations (1)
Number |
Date |
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0075860 |
Apr 1983 |
EPX |
Continuations (1)
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Number |
Date |
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Parent |
369465 |
Jan 1995 |
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Continuation in Parts (1)
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355512 |
Dec 1994 |
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