CA1262757A - Method and apparatus for laser surgery - Google Patents
Method and apparatus for laser surgeryInfo
- Publication number
- CA1262757A CA1262757A CA000496772A CA496772A CA1262757A CA 1262757 A CA1262757 A CA 1262757A CA 000496772 A CA000496772 A CA 000496772A CA 496772 A CA496772 A CA 496772A CA 1262757 A CA1262757 A CA 1262757A
- Authority
- CA
- Canada
- Prior art keywords
- laser
- fiber
- tissue
- microns
- wavelengths
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00595—Cauterization
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00601—Cutting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B2018/2065—Multiwave; Wavelength mixing, e.g. using four or more wavelengths
- A61B2018/207—Multiwave; Wavelength mixing, e.g. using four or more wavelengths mixing two wavelengths
Abstract
METHOD AND APPARATUS FOR LASER SURGERY
ABSTRACT OF THE DISCLOSURE
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.
ABSTRACT OF THE DISCLOSURE
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.
Description
5~
,~ ~., J
METHOD AND APPARATUS FOR LASER SURGERY
BACKGROUND OF THE INVENTIO~
.
This invention relates to cutting and cauterizing of body tissue by means of laser energy and in particular, to a new and improved method and apparatus for lasex surgery utilizing a YAG laser and an optical fiber for delivery of the laser energy.
In the past, lasers have been utilized for surgi-cal procedures. It is known to use the YAG lasex at a wavelength of 1.06 microns to provide an output to an optical fiber for surgical cauterizing. However, this device has not been satisfactory for cutting of tissue. Also, it has been known to use the CO2 laser in cutting procedures. However, there are no commercially available fibers that operate satisfactorily with the CO2 laser, and therefore surgical uses of the CO2 laser are severely limited.
It has long been known that it is highly desirable in surgical procedures for the surgeon to be able to easily cauterize tissue and to make precise tissue cuts during a surgical procedure in order to reduce bleeding and facilitate further surgical procedures, as well as to enhance healing.
While this is true for external applications, it is especi-ally so for surgery deep within the body. It is also desir-able to be able to achieve these functions with a sinyle surgical instrument so that the surgeon does not have to change tools during a procedure.
t75,7 ~ ccordingly, it is an object of the present invention to provide a new and improved method and apparatus for laser surgery w~ich permits use of laser energy both for cutting and for cauterizing, with a single instrument with the change in function under the direct control of the surgeon, both outside the body and inside the body.
It is an additional object of the present inven-tion to provide such a method and apparatus whi.ch can utilize an optical fiber for delivery of the energy, with the optical fiber having a small distal end which is readily manipulated and which can be utilized through an endoscope or other surgical instrumentat.ion, as desired.
It is an object of the present i.nvention to provide such a method and apparatus which can utilize conven-tional laser technology and conventional optical fibertechniques to provide a surgical instrument which is small, rompact and easily manipulated and which is relatively inexpensive, whil~ achieving the desired aims of substan-tially instantaneous changing between cutting and cauteri~ing functions.
Other objects, advantages, features and results will more fully appear in the course of the following des-cription.
SUMMARY OF THE INVENTION
A method of surgery using a YAG laser and an optical fiber wherein energy from the laser at a wavelength of 1.06 microns is directed through the optical fiber to the tissue for cauteriæing of tissue, and energy at a wavelength of 1.3 microns is directed through the fiber for cutting tissue.
The invention also includes laser surgical appara-tus with either a single YAG laser selectively opera~ing at1.06 and 1.3 microns wavelength or two lasers operating at 1.06 and 1.3 microns, respectively, with the laser output directed through an optical fiber to the tissue to be ~reated. In its simplest form the apparatus of the invention comprises a dual wavelength YAG laser selectively operable at 1.06 and 1.3 microns wavelength with means operable by the surgeon for selecting the desired wavelength and means for directing the output toward tissue, with or without an optical fiber.
BRIEF ~ESCRIPTION OF THE DRAWINGS
Fig. 1 is a diagrammatic presentation of a multi-mode or multiwavelength YAG laser and optical fiber combina-tion, incorporating the presently preferred embodiment of theinvention;
Fig. 2 is a partial view similar to that of Fig. 1 showing a~ alternative configuration for the distal end of the optical fiber; and Fig. 3 is a view similar to that of Fig. 1 showing an alternative embodiment incorporating two lasers.
DESCRIPTION OF T~IE PREFERRED EMBODIMENTS
.
A laser is diagrammatically illustrated in Fig. 1, more specifically a Nd:Y3A15O12 laser 10, which is usually referred to as a YAG laser.
In the preferred embodiment illustrated, the laser l0 includes a YAG rod 12, a hiyh reflecting mirror 13, a partially reflecting mirror 1~, a pivotally mounted prism 15 with a lever 16 for pivoting the prism, and an iris 17 for varying the output aperture. The laser may be conventional in construction and~ includes a housing with pumping source, power supply and cooling source (not shown).
s~
The YAG laser operates at discrete spectral lines and will function at a number of different wavelengths. The wave-lengths of interes~ for the present inventlon are at about 1.06 and 1.3 microns. The operating wavelengths for the YAG
laser at room temperature are reported as including 1.0641~
1.319 and 1.338 microns. These are often referred to as 1.06, 1.32 and 1.34, respectively, and the figures 1.06 and 1.3 as used herein are intended to encompass these more precise figures.
In operation, the prism 15 functions to disperse radiation passing therethrough, in the conventional manner, and hence can be used to tune the operation of the laser to a particular wavelength by appropriately pivoting the prism.
In one alternatlve embodiment, the highly reflecting mirror 15 can be mounted directly on the face of the prism, and in another alternative embodiment, a diffraction grating may be utilized in place of the prism and mirror. The iris 17 may be used for controlling the size of the output aperture, and may be varied depending upon the operating wavelength 20 desired. It is pre~erred to reduce the aperature when operating at 1.3 microns as this improves the single mode I lasing and enhances beam concentration for cutting.
The surgical instrument also includes an optical fiber 21, preferably a silica fiber, and preferably enclosed in a protective sheath 22. While a single fiber is pre-ferred, a bundle of fibers may be utilized, and~ the word"fiber" as used herein covers both the single fiber and the fiber bundle. In the embodiment of Fig. 1, the laser lO and the proximal end 23 of the fiber 21 are mounted so that the output of the laser through the partial mirror 14 is directed onto the proximal end 23, preferably with a focusing lens 2~.
The distal end 26 of the fiber 21 is designed to be readily manipulatable for positioning at the tissue 27 to be treated.
In one embodiment, the surgeon may manually grasp the fiber adjacen~ the distal end; in another embodiment, the fiber may be mounted in an endoscope and be remotely manipulated, in the conventional endoscope manner.
While the presently preferred embodiment of the surgical instrument and the surgical process utilizes an optical fiber as the element for delivering the laser output to the worksite, the optical fiber may be omitted, with the laser output being delivered by conventional output delivery devices. Also the distal end of the instrument, with or without the optical fiber, may be manipulated by an articu-lated arm and guided by the surgeon using a surgical micro scope for viewing the worksite.
Another focusing lens 30 may be mounted at the distal end 26 for improved concentration of energy for the cutting procedure. As shown in Fig. 1, the lens 30 may be mounted on a shaft 31 which is carried in a bracket 32. The shaft 30 may rotate in the bracket to move the lens from a position in the optical path as shown in Fig. 1, to a posi-tion out of the optical path as shown in Fig. 2. Alter-natively, the shaft 31 may translate in the bracket 32,moving the lens 30 toward and away from the distal end 26 of the fiber 210 When the lens 30 is incorporated in the instrument, the lens will be used to focus the energy to a small spot for the cutting operation, and will be moved to have a larger spot or an unfocused spot for the cauterizing procedure.
It has been found that YAG laser energy~ delivered through an optical fiber at a wavelength of about 1.06 microns is especially suited for surgical cauterizing of tissue because of its relatively deep penetration into tissue (several Inm or more), but is not satisfactory for cutting at tissue. Hence, the 1.06 wavelength laser has not been suitable for many surgical procedures. Now it has been found 5~
that the same YAG laser wi~h optical fiber when operating at a wavelength oE about 1.3 microns is especially suitable for cutting tissue because its beam is absorbed in a fraction of a mm of tissue, while no~ being satis~actory for cauterizing tissue.
Hence, when in use for cauterizing tissue, the instrument of the present invention is operated at 1.06 microns by appropriate adjustment of the prism lS, and of the lens 30 when used t and the surgeon manipulates the distal end of the fiber as desired. ~owever when a cutting procedure is desired, the surgeon changes the operating wavelength of the Y~G laser to 1.3 microns, typically by a foot operated lever or manual switch, and immediately proceeds with the cutting of tissue using the same instrument without requiring any hand or head movements.
During use, the instrument is quickly switched back and forth between the 1.06 and the 1.3 micron wave-length, without requiring release of or movement of the distal end, thereby greatly enhancing the ease and quickness of the surgical procedure.
By using the process and apparatus of this inven-tion for switching between coagulation or cauterizing and cutting, the surgeon can approach true "bloodless" surgery.
The inven~ion also provides a no touch technique for both cutting and coagulating. The instrument substantially reduces the degree and amount of manual mechanical dexterity required to complete the procedure, by using directed light energy instead of an interposing mechanical device, i.e. a scapel. Removal of a lesion or destruction of the lesion can be accomplished through a tiny incision using a narxow beam of light through a deep channel or hole too small for mechan-ical devices or hands, to coagulate the lesion and then remove it via converting the lesion to smoke, with the procedure therefore being less invasive.
J5~
Fig. l shows the distal end 26 of the fiber 21 directed to the surface of a portion of tissue 27, for cutting at the surface. Fig. 2 shows the distal end 26 positioned at a cut 33 in the tissue 27 for coagulation at the cut.
An alternative embodiment of the invention is shown in Fig. 3, which embodiment uses two YAG lasers 35, 36, with the laser 35 operating at 1.06 microns and the laser 36 operating at 1.3 microns wavelength. In one configuration the lasers 35, 36 are fixed in the instrument housing. The output of one laser, here the laser 35, is directed to the lens 24 through a beam splitter 37, and the output of the other laser is reflected through the lens 24 by the beam splitter 37. The respective lasers are turned on and off as desired by a wavelength selecting switch 38 operable by the surgeon.
,~ ~., J
METHOD AND APPARATUS FOR LASER SURGERY
BACKGROUND OF THE INVENTIO~
.
This invention relates to cutting and cauterizing of body tissue by means of laser energy and in particular, to a new and improved method and apparatus for lasex surgery utilizing a YAG laser and an optical fiber for delivery of the laser energy.
In the past, lasers have been utilized for surgi-cal procedures. It is known to use the YAG lasex at a wavelength of 1.06 microns to provide an output to an optical fiber for surgical cauterizing. However, this device has not been satisfactory for cutting of tissue. Also, it has been known to use the CO2 laser in cutting procedures. However, there are no commercially available fibers that operate satisfactorily with the CO2 laser, and therefore surgical uses of the CO2 laser are severely limited.
It has long been known that it is highly desirable in surgical procedures for the surgeon to be able to easily cauterize tissue and to make precise tissue cuts during a surgical procedure in order to reduce bleeding and facilitate further surgical procedures, as well as to enhance healing.
While this is true for external applications, it is especi-ally so for surgery deep within the body. It is also desir-able to be able to achieve these functions with a sinyle surgical instrument so that the surgeon does not have to change tools during a procedure.
t75,7 ~ ccordingly, it is an object of the present invention to provide a new and improved method and apparatus for laser surgery w~ich permits use of laser energy both for cutting and for cauterizing, with a single instrument with the change in function under the direct control of the surgeon, both outside the body and inside the body.
It is an additional object of the present inven-tion to provide such a method and apparatus whi.ch can utilize an optical fiber for delivery of the energy, with the optical fiber having a small distal end which is readily manipulated and which can be utilized through an endoscope or other surgical instrumentat.ion, as desired.
It is an object of the present i.nvention to provide such a method and apparatus which can utilize conven-tional laser technology and conventional optical fibertechniques to provide a surgical instrument which is small, rompact and easily manipulated and which is relatively inexpensive, whil~ achieving the desired aims of substan-tially instantaneous changing between cutting and cauteri~ing functions.
Other objects, advantages, features and results will more fully appear in the course of the following des-cription.
SUMMARY OF THE INVENTION
A method of surgery using a YAG laser and an optical fiber wherein energy from the laser at a wavelength of 1.06 microns is directed through the optical fiber to the tissue for cauteriæing of tissue, and energy at a wavelength of 1.3 microns is directed through the fiber for cutting tissue.
The invention also includes laser surgical appara-tus with either a single YAG laser selectively opera~ing at1.06 and 1.3 microns wavelength or two lasers operating at 1.06 and 1.3 microns, respectively, with the laser output directed through an optical fiber to the tissue to be ~reated. In its simplest form the apparatus of the invention comprises a dual wavelength YAG laser selectively operable at 1.06 and 1.3 microns wavelength with means operable by the surgeon for selecting the desired wavelength and means for directing the output toward tissue, with or without an optical fiber.
BRIEF ~ESCRIPTION OF THE DRAWINGS
Fig. 1 is a diagrammatic presentation of a multi-mode or multiwavelength YAG laser and optical fiber combina-tion, incorporating the presently preferred embodiment of theinvention;
Fig. 2 is a partial view similar to that of Fig. 1 showing a~ alternative configuration for the distal end of the optical fiber; and Fig. 3 is a view similar to that of Fig. 1 showing an alternative embodiment incorporating two lasers.
DESCRIPTION OF T~IE PREFERRED EMBODIMENTS
.
A laser is diagrammatically illustrated in Fig. 1, more specifically a Nd:Y3A15O12 laser 10, which is usually referred to as a YAG laser.
In the preferred embodiment illustrated, the laser l0 includes a YAG rod 12, a hiyh reflecting mirror 13, a partially reflecting mirror 1~, a pivotally mounted prism 15 with a lever 16 for pivoting the prism, and an iris 17 for varying the output aperture. The laser may be conventional in construction and~ includes a housing with pumping source, power supply and cooling source (not shown).
s~
The YAG laser operates at discrete spectral lines and will function at a number of different wavelengths. The wave-lengths of interes~ for the present inventlon are at about 1.06 and 1.3 microns. The operating wavelengths for the YAG
laser at room temperature are reported as including 1.0641~
1.319 and 1.338 microns. These are often referred to as 1.06, 1.32 and 1.34, respectively, and the figures 1.06 and 1.3 as used herein are intended to encompass these more precise figures.
In operation, the prism 15 functions to disperse radiation passing therethrough, in the conventional manner, and hence can be used to tune the operation of the laser to a particular wavelength by appropriately pivoting the prism.
In one alternatlve embodiment, the highly reflecting mirror 15 can be mounted directly on the face of the prism, and in another alternative embodiment, a diffraction grating may be utilized in place of the prism and mirror. The iris 17 may be used for controlling the size of the output aperture, and may be varied depending upon the operating wavelength 20 desired. It is pre~erred to reduce the aperature when operating at 1.3 microns as this improves the single mode I lasing and enhances beam concentration for cutting.
The surgical instrument also includes an optical fiber 21, preferably a silica fiber, and preferably enclosed in a protective sheath 22. While a single fiber is pre-ferred, a bundle of fibers may be utilized, and~ the word"fiber" as used herein covers both the single fiber and the fiber bundle. In the embodiment of Fig. 1, the laser lO and the proximal end 23 of the fiber 21 are mounted so that the output of the laser through the partial mirror 14 is directed onto the proximal end 23, preferably with a focusing lens 2~.
The distal end 26 of the fiber 21 is designed to be readily manipulatable for positioning at the tissue 27 to be treated.
In one embodiment, the surgeon may manually grasp the fiber adjacen~ the distal end; in another embodiment, the fiber may be mounted in an endoscope and be remotely manipulated, in the conventional endoscope manner.
While the presently preferred embodiment of the surgical instrument and the surgical process utilizes an optical fiber as the element for delivering the laser output to the worksite, the optical fiber may be omitted, with the laser output being delivered by conventional output delivery devices. Also the distal end of the instrument, with or without the optical fiber, may be manipulated by an articu-lated arm and guided by the surgeon using a surgical micro scope for viewing the worksite.
Another focusing lens 30 may be mounted at the distal end 26 for improved concentration of energy for the cutting procedure. As shown in Fig. 1, the lens 30 may be mounted on a shaft 31 which is carried in a bracket 32. The shaft 30 may rotate in the bracket to move the lens from a position in the optical path as shown in Fig. 1, to a posi-tion out of the optical path as shown in Fig. 2. Alter-natively, the shaft 31 may translate in the bracket 32,moving the lens 30 toward and away from the distal end 26 of the fiber 210 When the lens 30 is incorporated in the instrument, the lens will be used to focus the energy to a small spot for the cutting operation, and will be moved to have a larger spot or an unfocused spot for the cauterizing procedure.
It has been found that YAG laser energy~ delivered through an optical fiber at a wavelength of about 1.06 microns is especially suited for surgical cauterizing of tissue because of its relatively deep penetration into tissue (several Inm or more), but is not satisfactory for cutting at tissue. Hence, the 1.06 wavelength laser has not been suitable for many surgical procedures. Now it has been found 5~
that the same YAG laser wi~h optical fiber when operating at a wavelength oE about 1.3 microns is especially suitable for cutting tissue because its beam is absorbed in a fraction of a mm of tissue, while no~ being satis~actory for cauterizing tissue.
Hence, when in use for cauterizing tissue, the instrument of the present invention is operated at 1.06 microns by appropriate adjustment of the prism lS, and of the lens 30 when used t and the surgeon manipulates the distal end of the fiber as desired. ~owever when a cutting procedure is desired, the surgeon changes the operating wavelength of the Y~G laser to 1.3 microns, typically by a foot operated lever or manual switch, and immediately proceeds with the cutting of tissue using the same instrument without requiring any hand or head movements.
During use, the instrument is quickly switched back and forth between the 1.06 and the 1.3 micron wave-length, without requiring release of or movement of the distal end, thereby greatly enhancing the ease and quickness of the surgical procedure.
By using the process and apparatus of this inven-tion for switching between coagulation or cauterizing and cutting, the surgeon can approach true "bloodless" surgery.
The inven~ion also provides a no touch technique for both cutting and coagulating. The instrument substantially reduces the degree and amount of manual mechanical dexterity required to complete the procedure, by using directed light energy instead of an interposing mechanical device, i.e. a scapel. Removal of a lesion or destruction of the lesion can be accomplished through a tiny incision using a narxow beam of light through a deep channel or hole too small for mechan-ical devices or hands, to coagulate the lesion and then remove it via converting the lesion to smoke, with the procedure therefore being less invasive.
J5~
Fig. l shows the distal end 26 of the fiber 21 directed to the surface of a portion of tissue 27, for cutting at the surface. Fig. 2 shows the distal end 26 positioned at a cut 33 in the tissue 27 for coagulation at the cut.
An alternative embodiment of the invention is shown in Fig. 3, which embodiment uses two YAG lasers 35, 36, with the laser 35 operating at 1.06 microns and the laser 36 operating at 1.3 microns wavelength. In one configuration the lasers 35, 36 are fixed in the instrument housing. The output of one laser, here the laser 35, is directed to the lens 24 through a beam splitter 37, and the output of the other laser is reflected through the lens 24 by the beam splitter 37. The respective lasers are turned on and off as desired by a wavelength selecting switch 38 operable by the surgeon.
Claims (14)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a laser surgical apparatus for tissue cutting and cauterizing, the combination of:
a multiwavelength YAG laser including means for shifting between output wavelengths of about 1.06 and about 1.3 microns;
an optical fiber; and means for directing energy from said laser to one end of said fiber, with the other end of said fiber moveable to be positioned at tissue to be treated.
a multiwavelength YAG laser including means for shifting between output wavelengths of about 1.06 and about 1.3 microns;
an optical fiber; and means for directing energy from said laser to one end of said fiber, with the other end of said fiber moveable to be positioned at tissue to be treated.
2. An apparatus as defined in Claim 1, wherein said means for directing energy includes a first focusing lens for focusing the laser output onto said one end of said fiber.
3. An apparatus as defined in Claim 2 including a second focusing lens mounted at said other end of said fiber, and means for changing the focus of said second lens.
4. An apparatus as defined in Claim 3, wherein said means for changing the focus comprises means for moving said second lens toward and away from said fiber end.
I
I
5. An apparatus as defined in Claim 3, wherein said means for changing the focus comprises means for moving said second lens into and out of the optical path from said second end.
6. An apparatus as defined in Claim 1 including a focusing lens mounted at said other end of said fiber, and means for changing the focus of said second lens.
7. In a laser surgical apparatus for tissue cutting and cauterizing, the combination of:
YAG laser means for producing outputs at wavelengths of about 1.06 and about 1.3 microns;
an optical fiber; and selecting means for directing one of said wavelength outputs to one end of said fiber, with the other end of said fiber moveable to be positioned at tissue to be treated.
YAG laser means for producing outputs at wavelengths of about 1.06 and about 1.3 microns;
an optical fiber; and selecting means for directing one of said wavelength outputs to one end of said fiber, with the other end of said fiber moveable to be positioned at tissue to be treated.
8. An apparatus as defined in Claim 7, wherein said laser means is a multiwavelength laser, and said selecting means includes means for switching the lasing mode between said wavelengths.
9. An apparatus as defined in Claim 7, wherein said laser means includes two lasers with outputs of about 1.06 and about 1.3 microns, respectively, and said selecting means includes means for directing the output of one or the other of said lasers to said fiber one end.
10. An apparatus as defined in Claim 9, wherein said selecting means includes means for selectively switching one or the other of said lasers into operation.
11. In a laser surgical apparatus for tissue cutting and cauterizing, the combination of:
a multiwavelength YAG laser including means for shifting between output wavelengths of about 1.06 and about 1.3 microns;
a laser output delivery instrument; and means for directing energy from said laser to one end of said delivery instrument, with the other end of said delivery instrument moveable to be positioned at tissue to be treated.
a multiwavelength YAG laser including means for shifting between output wavelengths of about 1.06 and about 1.3 microns;
a laser output delivery instrument; and means for directing energy from said laser to one end of said delivery instrument, with the other end of said delivery instrument moveable to be positioned at tissue to be treated.
12. In a laser surgical apparatus for tissue cutting and cauterizing, the combination of:
YAG laser means for producing outputs at wavelengths of about 1.06 and about 1.3 microns;
a laser output delivery device; and selecting means for directing one of said wavelength outputs to one end of said delivery device, with the other end of said delivery device moveable to be positioned at tissue to be treated.
YAG laser means for producing outputs at wavelengths of about 1.06 and about 1.3 microns;
a laser output delivery device; and selecting means for directing one of said wavelength outputs to one end of said delivery device, with the other end of said delivery device moveable to be positioned at tissue to be treated.
13. An apparatus as defined in Claim 12, wherein said laser means is a multiwavelength laser, and said selecting means includes means for switching the lasing mode between said wavelengths.
14. An apparatus as defined in Claim 12, wherein said laser means includes two lasers with outputs of about 1.06 and 1.3 microns, respectively, and said selecting means includes means for directing the output of one or the other of said lasers to said delivery instrument one end.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72726685A | 1985-04-25 | 1985-04-25 | |
| US727,266 | 1985-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1262757A true CA1262757A (en) | 1989-11-07 |
Family
ID=24921983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000496772A Expired CA1262757A (en) | 1985-04-25 | 1985-12-03 | Method and apparatus for laser surgery |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5125922A (en) |
| EP (1) | EP0198959A3 (en) |
| JP (1) | JPS61249460A (en) |
| CA (1) | CA1262757A (en) |
| ES (1) | ES8801108A1 (en) |
Families Citing this family (47)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3730563C2 (en) * | 1987-09-11 | 1994-07-07 | Aesculap Ag | Medical device for cutting or coagulating tissue |
| US5257935A (en) * | 1988-03-14 | 1993-11-02 | American Dental Laser, Inc. | Dental laser |
| US5769840A (en) * | 1988-04-19 | 1998-06-23 | Schirmer; Kurt E. | Microsurgery using alternating disruptive and thermal laser beam pulses |
| US5423798A (en) * | 1988-04-20 | 1995-06-13 | Crow; Lowell M. | Ophthalmic surgical laser apparatus |
| DE3833993A1 (en) * | 1988-10-06 | 1990-04-12 | Messerschmitt Boelkow Blohm | LIGHT GUIDE AND RADIATION DEVICE |
| DE3833992A1 (en) * | 1988-10-06 | 1990-04-12 | Messerschmitt Boelkow Blohm | RADIATION DEVICE |
| EP0368512A3 (en) * | 1988-11-10 | 1990-08-08 | Premier Laser Systems, Inc. | Multiwavelength medical laser system |
| US5232366A (en) * | 1988-12-21 | 1993-08-03 | Laser Medical Technology, Inc. | Cutting physiologic tissues |
| EP0392951A3 (en) * | 1989-04-10 | 1991-01-16 | Guy Levy | Device and method utilising laser effect, for the vaporization and fusion of materials and various tissues |
| US5300063A (en) * | 1991-05-11 | 1994-04-05 | Nidek Co., Ltd. | Ophthalmic laser apparatus |
| JP3164236B2 (en) * | 1991-10-04 | 2001-05-08 | 株式会社ニデック | Light therapy equipment |
| US5507739A (en) * | 1992-06-15 | 1996-04-16 | American Dental Technologies, Inc. | Dental laser |
| US5390204A (en) * | 1992-09-25 | 1995-02-14 | Incisive Technologies, Inc. | Intracavity modulated pulsed laser with a variably controllable modulation frequency |
| US5643252A (en) * | 1992-10-28 | 1997-07-01 | Venisect, Inc. | Laser perforator |
| DE4239073C1 (en) * | 1992-11-20 | 1994-04-21 | Aesculap Ag | Medical handpiece |
| US5468238A (en) * | 1993-06-11 | 1995-11-21 | Ethicon, Inc. | Endoscopic laser instrument |
| US6251100B1 (en) | 1993-09-24 | 2001-06-26 | Transmedica International, Inc. | Laser assisted topical anesthetic permeation |
| DE19549531B4 (en) * | 1994-10-14 | 2007-12-13 | Mitsubishi Denki K.K. | Optical transmitter with solid state laser devices using graded index optical fibre - has optical fibre incident system with parameters defined according to equation relating diameters and refractive indices |
| US5480396A (en) * | 1994-12-09 | 1996-01-02 | Simon; Gabriel | Laser beam ophthalmological surgery method and apparatus |
| US5868731A (en) * | 1996-03-04 | 1999-02-09 | Innotech Usa, Inc. | Laser surgical device and method of its use |
| DE19521003C1 (en) * | 1995-06-08 | 1996-08-14 | Baasel Carl Lasertech | Pulsed light source for removing biological tissue |
| US5846080A (en) * | 1995-12-20 | 1998-12-08 | W&H Dentalwerk Gmbh | Laser dental devices and methods |
| US7229436B2 (en) * | 1996-01-05 | 2007-06-12 | Thermage, Inc. | Method and kit for treatment of tissue |
| IL118850A0 (en) * | 1996-07-14 | 1996-10-31 | Orziv Ltd | Device and method for laser marking |
| US5746738A (en) * | 1996-11-20 | 1998-05-05 | Cleary & Oxford Associates | Laser surgical device |
| JPH1147139A (en) * | 1997-07-30 | 1999-02-23 | Shimadzu Corp | Surgical device |
| US5885275A (en) * | 1998-01-15 | 1999-03-23 | Diomed, Inc. | Medical spacing guide |
| US6165170A (en) * | 1998-01-29 | 2000-12-26 | International Business Machines Corporation | Laser dermablator and dermablation |
| US6529328B1 (en) * | 1998-08-07 | 2003-03-04 | Jds Fitel Inc. | Optical filter |
| JP2000091678A (en) * | 1998-09-11 | 2000-03-31 | Nec Corp | Fiber laser irradiation device |
| US6951411B1 (en) * | 1999-06-18 | 2005-10-04 | Spectrx, Inc. | Light beam generation, and focusing and redirecting device |
| EP1114620A1 (en) * | 2000-01-07 | 2001-07-11 | Giga A/S | Device for power treatment of tissue or biological samples with light |
| US6743221B1 (en) * | 2001-03-13 | 2004-06-01 | James L. Hobart | Laser system and method for treatment of biological tissues |
| US6927359B2 (en) * | 2001-06-14 | 2005-08-09 | Advanced Cardiovascular Systems, Inc. | Pulsed fiber laser cutting system for medical implants |
| US20040199223A1 (en) * | 2001-06-15 | 2004-10-07 | Andersen Peter E. | Laser system for treatment and diagnosis |
| US6770069B1 (en) | 2001-06-22 | 2004-08-03 | Sciton, Inc. | Laser applicator |
| AT411322B (en) * | 2002-03-27 | 2003-12-29 | In Vision Praez Soptik Produkt | LASER MANIPULATOR |
| JP2006204609A (en) * | 2005-01-28 | 2006-08-10 | Showa Yakuhin Kako Kk | Laser therapy equipment |
| CA2622433A1 (en) * | 2005-09-21 | 2007-04-05 | Medtronic, Inc. | Composite heart valve apparatus manufactured using techniques involving laser machining of tissue |
| US8702687B2 (en) | 2005-11-03 | 2014-04-22 | Luxon, Inc. | Surgical laser systems for soft and hard tissue and methods of use thereof |
| US7566173B2 (en) * | 2007-07-09 | 2009-07-28 | Alcon, Inc. | Multi-spot ophthalmic laser probe |
| US20090275932A1 (en) * | 2008-05-02 | 2009-11-05 | Zelickson Brian D | Laser energy devices and methods for soft tissue removal |
| WO2011066065A1 (en) * | 2009-11-24 | 2011-06-03 | Alcon Research, Ltd. | Single-fiber multi-spot laser probe for ophthalmic endoillumination |
| AU2010332222B2 (en) * | 2009-12-15 | 2014-11-20 | Alcon Inc. | Multi-spot laser probe |
| ITRM20100603A1 (en) * | 2010-11-16 | 2012-05-17 | Quanta System Spa | LASER DEVICE FOR SURGERY. |
| US8961190B2 (en) * | 2011-12-20 | 2015-02-24 | Applied Medical Resources Corporation | Advanced surgical simulation |
| US10245181B2 (en) | 2012-12-21 | 2019-04-02 | Alcon Research, Ltd. | Grin fiber multi-spot laser probe |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4240431A (en) * | 1977-05-16 | 1980-12-23 | Olympus Optical Co., Ltd. | Laser knife |
| US4249533A (en) * | 1977-05-16 | 1981-02-10 | Olympus Optical Co., Ltd. | Laser knife |
| US4266547A (en) * | 1977-05-16 | 1981-05-12 | Olympus Optical Co., Ltd. | Laser knife |
| JPS54103098U (en) * | 1977-12-29 | 1979-07-20 | ||
| DE2809007A1 (en) * | 1978-03-02 | 1979-09-13 | Messerschmitt Boelkow Blohm | Live tissue cutting and coagulating instrument - has two different wavelength laser beams and pilot light(s) passed together through manipulator to emerge coaxially from it |
| US4273127A (en) * | 1978-10-12 | 1981-06-16 | Research Corporation | Method for cutting and coagulating tissue |
| US4469098A (en) * | 1978-12-18 | 1984-09-04 | Davi Samantha K | Apparatus for and method of utilizing energy to excise pathological tissue |
| FR2517484B2 (en) * | 1981-05-08 | 1986-03-28 | Comp Generale Electricite | LASER DEVICE WITH MULTIPLE EMISSION FREQUENCIES |
| FR2505563B1 (en) * | 1981-05-08 | 1986-02-14 | Comp Generale Electricite | LASER DEVICE WITH MULTIPLE EMISSION FREQUENCIES |
| US4633866A (en) * | 1981-11-23 | 1987-01-06 | Gholam Peyman | Ophthalmic laser surgical method |
| JPS5985657A (en) * | 1982-11-06 | 1984-05-17 | 日本赤外線工業株式会社 | Laser radiation apparatus |
| US4520816A (en) * | 1983-01-12 | 1985-06-04 | Schachar Ronald A | Method and apparatus for delivering laser energy for ophthalmic use |
| GB2139500B (en) * | 1983-05-14 | 1986-07-30 | Hpw Ltd | Surgical laser knives |
| US4503854A (en) * | 1983-06-16 | 1985-03-12 | Jako Geza J | Laser surgery |
| US4672969A (en) * | 1983-10-06 | 1987-06-16 | Sonomo Corporation | Laser healing method |
| US4580558A (en) * | 1984-03-28 | 1986-04-08 | Codman & Shurtleff, Inc. | Laser instrument |
-
1985
- 1985-12-03 CA CA000496772A patent/CA1262757A/en not_active Expired
- 1985-12-17 EP EP85116056A patent/EP0198959A3/en not_active Ceased
- 1985-12-18 JP JP60283138A patent/JPS61249460A/en active Pending
-
1986
- 1986-04-25 ES ES554392A patent/ES8801108A1/en not_active Expired
-
1987
- 1987-08-17 US US07/085,798 patent/US5125922A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0198959A2 (en) | 1986-10-29 |
| US5125922A (en) | 1992-06-30 |
| EP0198959A3 (en) | 1987-05-27 |
| ES554392A0 (en) | 1988-01-01 |
| ES8801108A1 (en) | 1988-01-01 |
| JPS61249460A (en) | 1986-11-06 |
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| MKLA | Lapsed |