Patent US5387211A successfully refreshed from Google Patents.
US5387211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-head laser assembly
Assignee: Trimedyne Inc
•
Filing: 1993-03-10
•
Granted: 1995-02-07
•
Expires: 2013-03-10
Abstract
Abstract A laser device is provided for the co-axial positioning of plural laser beams of same or different wavelengths along a single axis. At least two laser oscillators are provided, each producing a laser beam. A rotary reflector is positioned for intercepting at least one of the produced laser beams and directing the intercepted laser beam separately from, but along a single axis defined by another laser beam.
Inventors
- 👤 Vahid Saadatmanesh
- 👤 Marvin P. Loeb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:47
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/10; G02B27/14; G02B27/143; A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; G02B27/145; G02B27/147; A61B2018/00571; A61B2018/00577; A61B2018/00589; A61B2018/00595; A61B2018/2065; H; H01; H01S; H01S3/00; H01S3/005; H01S3/0071; H01S3/23; H01S3/2383
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
188 words
A laser device for co-axial positioning of plural laser beams along a single axis, which device comprises: at least two laser oscillators for producing a laser beam by each oscillator; rotary reflector means positioned for intercepting at least one of said produced laser beams and directing the intercepted laser beam separately from, but along a single axis defined by, the other laser beam; alignment means for aligning the respective laser beams of each said oscillator at an angle along paths which intersect at a region; said reflector means includes a reflecting member rotation means for rotating said reflecting member through said path intersection region; and said device includes control means for operating one of said oscillators to emit a pulse of said one laser beam only as said reflecting member rotates through said path intersection region so as to reflect said one beam pulse along said single axis and for operating another of said oscillators to emit a pulse of said other laser beam only when said reflecting member has rotated beyond said path intersection region so that said other beam pulse passes unobstructed along said single axis.
Claim 2
Dependent Claim
188 words
A laser device for co-axial positioning of plural laser beams along a single axis, which device comprises: at least two laser oscillators for producing a laser beam by each oscillator; rotary reflector means positioned for intercepting at least one of said produced laser beams and directing the intercepted laser beam separately from, but along a single axis defined by, the other laser beam; alignment means for aligning the respective laser beams of each said oscillator at an angle along paths which intersect at a region; said reflector means includes a reflecting member rotation means for rotating said reflecting member through said path intersection region; and said device includes control means for operating one of said oscillators to emit a pulse of said one laser beam only as said reflecting member rotates through said path intersection region so as to reflect said one beam pulse along said single axis and for operating another of said oscillators to emit a pulse of said other laser beam only when said reflecting member has rotated beyond said path intersection region so that said other beam pulse passes unobstructed along said single axis.
Claim 3
Dependent Claim
35 words
The laser device in accordance with claim 1 wherein said rotary reflector means is a single rotary disk provided with plural, independent, reflecting surfaces and an equal number of separate apertures of substantially same size.
Claim 4
Dependent Claim
29 words
The laser device in accordance with claim 2 wherein a focusing element is present along the single axis to receive each laser beam reflected by said independent reflecting surface.
Claim 5
Dependent Claim
28 words
The laser device in accordance with claim 1 wherein said rotary reflector means is a single rotating disk provided with plural apertures in a continuous planar, reflecting surface.
Claim 6
Dependent Claim
28 words
The laser device in accordance with claim 1 wherein said rotary reflector means is a single (rotating disk provided with a transparent region and a coplanar reflecting region.
Claim 7
Dependent Claim
21 words
The laser device in accordance with claim 1 wherein said laser oscillators are Q-switchable in synchronism with said rotary reflector means.
Claim 8
Dependent Claim
33 words
The laser device in accordance with claim 1 wherein said rotary reflector means is rotatable at a speed in the range of about 12 revolutions per minute to about 10,000 revolutions per minute.
Claim 9
Dependent Claim
34 words
The laser device in accordance with claim 1 where in a pair of laser oscillators is provided and wherein said rotary reflector means is positioned to intercept periodically one of the produced laser beams.
Claim 10
Dependent Claim
18 words
The laser device in accordance with claim 1 wherein three laser oscillators interact with said rotary reflector means.
Claim 11
Dependent Claim
26 words
The laser device in accordance with claim 1 wherein three laser oscillators are provided and two of the three oscillators interact with said rotary reflector means.
Claim 12
Dependent Claim
41 words
The laser device in accordance with claim 1 wherein said laser oscillators emit holmium:YAG laser energy at a pulse rate of at least about 1 Hertz and having a pulse width in the range of about 10 to about 10,000 microseconds.
Claim 13
Dependent Claim
21 words
The laser device in accordance with claim 1 wherein said laser oscillators are mode-locked in synchronism with said rotary reflector means.
Claim 14
Dependent Claim
16 words
The laser device in accordance with claim 1 wherein said laser oscillators emit Nd:YAG laser energy.
Claim 15
Dependent Claim
16 words
The laser device in accordance with claim 1 wherein said laser oscillators emit excimer laser energy.
Claim 16
Dependent Claim
21 words
The laser device in accordance with claim 14 wherein the excimer laser energy is emitted at a wavelength of 193 nanometers.
Claim 17
Dependent Claim
21 words
The laser device in accordance with claim 14 wherein the excimer laser energy is emitted at a wavelength of 308 nanometers.
Claim 18
Dependent Claim
145 words
A laser device for co-axial positioning of plural laser beams along a single axis, which device comprises: at least two laser oscillators for producing a laser beam by each oscillator; rotary reflector means positioned for intercepting at least one of said produced laser beams and directing the intercepted laser beam separately from, but along a single axis defined by, the other laser beam; and control means for operating one of said oscillators to emit a pulse of said one laser beam only as a beam reflecting member rotates through a path interception region so as to reflect said one beam pulse along said single axis and for operating another of said oscillators to emit a pulse of said other laser beam only when said reflector means has rotated beyond said path interception region so that said other beam pulse passes unobstructed along said single axis.
Claim 19
Dependent Claim
145 words
A laser device for co-axial positioning of plural laser beams along a single axis, which device comprises: at least two laser oscillators for producing a laser beam by each oscillator; rotary reflector means positioned for intercepting at least one of said produced laser beams and directing the intercepted laser beam separately from, but along a single axis defined by, the other laser beam; and control means for operating one of said oscillators to emit a pulse of said one laser beam only as a beam reflecting member rotates through a path interception region so as to reflect said one beam pulse along said single axis and for operating another of said oscillators to emit a pulse of said other laser beam only when said reflector means has rotated beyond said path interception region so that said other beam pulse passes unobstructed along said single axis.
Claim 20
Dependent Claim
37 words
The laser device in accordance with claim 17 wherein said control means causes two consecutive laser energy pulses to be emitted sufficiently close in time to one another to elicit additive acoustic effect at a target site.
Claim 21
Dependent Claim
42 words
The laser device in accordance with claim 17 wherein said control means causes two consecutive laser energy pulses to be spaced in time from one another to elicit an additive thermal effect without eliciting an additive acoustic effect at a target site.
References Cited (Backward Citations)
US3710798A
Cited
US4408602A
Cited
US4454882A
Cited
US4520816A
Cited
US4503854A
Cited
US5084881A
Cited
US5139494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-06 | 1998-08-08 | 1999-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-06 | 2002-08-08 | 2003-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-06 | 2006-08-08 | 2007-02-07 | $7700.00 | Window Closed / Lapsed |