US5125922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for laser surgery
Assignee: Individual
•
Filing: 1987-08-17
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Granted: 1992-06-30
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Expires: 2007-08-17
Abstract
Abstract Method and apparatus for tissue cutting and cauterizing using a YAG laser and an optical fiber. YAG laser outputs at wavelengths of 1.06 and 1.3 microns are used for tissue cauterizing and cutting, respectively. In one embodiment, a multimode laser with means for switching the laser output between the two wavelengths is utilized; in another embodiment, individual lasers operating at the respective wavelengths are utilized.
Inventors
- 👤 Richard M. Dwyer
- 👤 Douglas A. Pinnow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:36
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/22; B; B23; B23K; B23K26/00; B23K26/02; A61B2018/00571; A61B2018/00595; A61B2018/00601; A61B2018/2065; A61B2018/207
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
103 words
In a method of surgery using a YAG laser for reducing blood flow at the surgical site during a surgical cutting procedure, the steps of: directing energy from a YAG laser operating at about a 1.03 micron wavelength, to tissue to heat the tissue to a temperature at which tissue is destroyed for cutting the tissue; directing energy from a YAG laser operating at about a 1.06 micron wavelength, to the cut tissue for cauterizing the tissue; and repeating the cutting and cauterizing steps during the surgical procedure by repeatedly switching back and forth between the 1.3 micron and the 1.06 micron wavelengths.
Claim 2
Dependent Claim
103 words
In a method of surgery using a YAG laser for reducing blood flow at the surgical site during a surgical cutting procedure, the steps of: directing energy from a YAG laser operating at about a 1.03 micron wavelength, to tissue to heat the tissue to a temperature at which tissue is destroyed for cutting the tissue; directing energy from a YAG laser operating at about a 1.06 micron wavelength, to the cut tissue for cauterizing the tissue; and repeating the cutting and cauterizing steps during the surgical procedure by repeatedly switching back and forth between the 1.3 micron and the 1.06 micron wavelengths.
Claim 3
Dependent Claim
20 words
The method of claim 1 utilizing a single laser and changing its wavelength between about 1.06 and about 1.3 microns.
Claim 4
Dependent Claim
15 words
The method of claim 1 utilizing two lasers and operating each at a single wavelength.
Claim 5
Dependent Claim
116 words
In a method of surgery using a YAG laser and an optical fiber for reducing blood flow at the surgical site during a surgical cutting procedure, the steps of: directing energy from a YAG laser operating at about a 1.3 micron wavelength, through the optical fiber to the tissue to heat the tissue to a temperature at which tissue is destroyed for cutting the tissue; directing energy from a YAG laser operating at about a 1.06 micron wavelength, through an optical fiber to the cut tissue for cauterizing the tissue; and repeating the cutting and cauterizing steps during the surgical procedure by repeatedly switching back and forth between the 1.3 micron and the 1.06 micron wavelengths.
Claim 6
Dependent Claim
116 words
In a method of surgery using a YAG laser and an optical fiber for reducing blood flow at the surgical site during a surgical cutting procedure, the steps of: directing energy from a YAG laser operating at about a 1.3 micron wavelength, through the optical fiber to the tissue to heat the tissue to a temperature at which tissue is destroyed for cutting the tissue; directing energy from a YAG laser operating at about a 1.06 micron wavelength, through an optical fiber to the cut tissue for cauterizing the tissue; and repeating the cutting and cauterizing steps during the surgical procedure by repeatedly switching back and forth between the 1.3 micron and the 1.06 micron wavelengths.
Claim 7
Dependent Claim
20 words
The method of claim 1 utilizing a single laser and changing its wavelength between about 1.06 and about 1.3 microns.
Claim 8
Dependent Claim
29 words
The method of claim 1 utilizing two lasers and operating each at a single wavelength, and switching the input to the optical fiber from one laser to the other.
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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) | 1995-06-30 | 1995-12-30 | 1996-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-30 | 1999-12-30 | 2000-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-30 | 2003-12-30 | 2004-06-30 | $7700.00 | Window Closed / Lapsed |