Patent US5397327A successfully refreshed from Google Patents.
US5397327A
Expired / Lapsed
US
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Surgical laser handpiece for slit incisions
Assignee: ESC MEDICAL SYSTEMS Inc
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Filing: 1993-07-27
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Granted: 1995-03-14
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Expires: 2013-07-27
Abstract
Abstract A slit incision handpiece that receives a circular laser beam, reshapes the beam to have an elliptical cross-section, and focuses the beam onto target tissue. Slit incisions of approximately the dimensions of the elliptical beam are formed by stationary exposures on the target tissue from the output of the slit incision handpiece.
Inventors
- 👤 Dale E. Koop
- 👤 Michael Arnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:44
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/09; G02B27/0938; G02B27/0977; G02B27/0983; A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/201; G02B27/0911
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
113 words
A surgical handpiece incorporated into an articulated arm for connection to a laser generating a beam having a substantially circular cross-section, and delivering the beam to a target tissue to create a slit incision, comprising: an articulated arm having straight segments connected end to end by rotatable joints; an optic in each of the joints whereby the laser beam traveling down each of the segments is redirected down the subsequent segment; and at least one of the optics in one of the joints being a beam shaping mirror that changes the shape of the beam in a manner so that the beam has an elliptical cross-section when the beam reaches the target tissue.
Claim 2
Dependent Claim
113 words
A surgical handpiece incorporated into an articulated arm for connection to a laser generating a beam having a substantially circular cross-section, and delivering the beam to a target tissue to create a slit incision, comprising: an articulated arm having straight segments connected end to end by rotatable joints; an optic in each of the joints whereby the laser beam traveling down each of the segments is redirected down the subsequent segment; and at least one of the optics in one of the joints being a beam shaping mirror that changes the shape of the beam in a manner so that the beam has an elliptical cross-section when the beam reaches the target tissue.
Claim 3
Dependent Claim
86 words
A surgical handpiece for connection to a laser that generates a beam having a substantially circular cross-section, said handpiece for delivering the beam to a target tissue to create a slit incision, the handpiece comprising: conduit means having a central channel for transmitting the laser beam; and optical means within the channel for changing the shape of the beam in a manner so that the beam has an elliptical cross-section when the beam reaches the target tissue whereby an elongated strip of tissue can be ablated.
Claim 4
Dependent Claim
86 words
A surgical handpiece for connection to a laser that generates a beam having a substantially circular cross-section, said handpiece for delivering the beam to a target tissue to create a slit incision, the handpiece comprising: conduit means having a central channel for transmitting the laser beam; and optical means within the channel for changing the shape of the beam in a manner so that the beam has an elliptical cross-section when the beam reaches the target tissue whereby an elongated strip of tissue can be ablated.
Claim 5
Dependent Claim
17 words
A surgical handpiece as recited in claim 2 wherein the optical means is a beam shaping mirror.
Claim 6
Dependent Claim
20 words
A surgical handpiece as recited in claim 2 wherein the optical means is a beam shaping mirror and a lens.
Claim 7
Dependent Claim
15 words
A surgical handpiece as recited in claim 2 wherein the optical means is a lens.
Claim 8
Dependent Claim
17 words
A surgical handpiece as recited in claim 2 whereby the handpiece is attached to an articulated arm.
Claim 9
Dependent Claim
70 words
A surgical handpiece as recited in claim 2 wherein the conduit means further includes a first section and a second section connected together by a swivel joint; the conduit means further including a pair of mirrors disposed therein, with one of the mirrors defining the optical means for changing the shape of the beam; the first section containing one of the mirrors; and the second section containing the other mirror.
Claim 10
Dependent Claim
76 words
A surgical handpiece as recited in claim 2 further comprising: the conduit means having a first section, a middle section and a second section; the first section and the middle section being connected together by a swivel joint; the middle section and the second section being connected together by a second swivel joint; and two optical elements disposed inside the conduit means, one of which defining the optical means for changing the shape of the beam.
Claim 11
Dependent Claim
41 words
A surgical handpiece as recited in claim 8 wherein the two optical elements are defined by a lens and a mirror; and the optical means for changing the shape of the beam are defined by both the lens and the mirror.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-13 | 1998-09-12 | 1999-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-13 | 2002-09-12 | 2003-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-13 | 2006-09-12 | 2007-03-14 | $7700.00 | Window Closed / Lapsed |