WO1997015235A1 - Angled beam delivery handpiece for laser or other monochromatic light source - Google Patents
Angled beam delivery handpiece for laser or other monochromatic light source Download PDFInfo
- Publication number
- WO1997015235A1 WO1997015235A1 PCT/US1996/016135 US9616135W WO9715235A1 WO 1997015235 A1 WO1997015235 A1 WO 1997015235A1 US 9616135 W US9616135 W US 9616135W WO 9715235 A1 WO9715235 A1 WO 9715235A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- barrel
- handpiece
- contact surface
- prism
- laser
- Prior art date
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
- A61B18/201—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 with beam delivery through a hollow tube, e.g. forming an articulated arm ; Hand-pieces therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00243—Type of minimally invasive operation cardiac
- A61B2017/00247—Making holes in the wall of the heart, e.g. laser Myocardial revascularization
-
- 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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00351—Heart
- A61B2018/00392—Transmyocardial revascularisation
-
- 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
- A61B2018/2015—Miscellaneous features
- A61B2018/2025—Miscellaneous features with a pilot laser
Definitions
- This invention relates to an angled beam delivery handpiece for a laser or other monochromatic light source, and more particularly to such a handpiece for diverting a laser beam in a surgical laser.
- the invention results from the realization that a simple, rugged handpiece for delivery of a diverted laser beam or other monochromatic beam can be achieved without enlarged, angled mirrors by using a refractive element to divert the beam to ⁇ e desired angle.
- This invention features an angled beam-delivery handpiece.
- a barrel for delivering a monochromatic light beam a contact surface at the distal end of the barrel, a window in the side of the barrel proximate the contact surface, an aperture in the contact surface.
- a refractive element in the barrel above the window diverts the beam carried by the barrel to exit the aperture at an angle to the laser beam in the barrel.
- the contact surface may be perpendicular to the diverted beam.
- the contact surface may be "U" shaped, the aperture may open on one side and the contact surface may be elongated, being substantially the same widtii as the barrel in the direction across the "U" shape and longer than the barrel width in the transverse direction.
- the refractive element may include an optical prism and the optical prism may include two relatively rotatable sections for varying the diversion angle of the beam.
- the optical prism may also include a dichroic prism for diverting the beam and a second beam of different wavelength to the same target area.
- Fig. 1 is a three-dimensional view of a laser system which utilizes the handpiece of this invention
- Fig. 2 is an enlarged, more detailed, exploded three-dimensional view of a portion of the articulated arm in Fig. 1 and a conventional handpiece;
- Fig. 3 is a three-dimensional partially sectional diagrammatic view of a handpiece according to this invention
- Fig. 4 is a schematic ray diagram showing the parameters considered in the refractive element used to divert the beam in the handpiece of Fig. 3;
- Fig. 5 is a schematic diagram of a prism similar to that shown in Figs. 3 and 4 having two mutually rotatable sections for varying the diversion angle of the beam;
- Fig. 6 is a schematic diagram of the two prisms shown fully rotated 180° out of phase where the beam diversion is zero;
- Fig. 7 is a cross-sectional schematic diagram of a portion of a handpiece showing the mechanism for rotating the two prism sections relative to one another;
- Fig. 7 A is an enlarged more detailed view of the gripping ring and associated assembly of Fig. 7;
- Fig. 8 is a schematic ray diagram of a dichroic prism which diverts two beams of two different wavelengths but converges them on the same target;
- Fig. 9 is a schematic side elevational view of a portion of the handpiece showing an alternative embodiment of the invention using a grating on the prism surface for diverting the HeNe and CO 2 beams and converging them on the same target; and
- Fig. 10 is an expanded view of the grating of Fig. 9.
- a surgical laser system 10 which includes a power supply and control 12 operated through control and monitor screen 14 to operate laser 16.
- the output from laser 16 is directed through articulated arm 18 to handpiece 20 typically held by the operator or surgeon to direct the beam at the desired target.
- Handpiece 20 includes an enlarged threaded portion 23 for connection to articulated arm 18 and a barrel 22 at the end of which is contact surface 24 which for example contacts the heart of the patient on which transmyocardial revascularization is being performed.
- a lens 30, shown in phantom, in barrel 22 focuses laser beam 28 at a predetermined distance typically at the contact surface 22.
- Barrel 22 also includes a side window 32 through which the user can view the beam as it enters aperture 26. Window 32 also acts as a venting hole for the ablative plume which rises from the heart or other tissue struck by the laser beam 28.
- handpiece 20a in accordance with this invention handpiece 20a, Fig. 3, includes barrel 22a which includes a similar connection portion 23a and lens 30a.
- prism 40 which diverts laser beam 28a resulting in the diverted beam 28aa which exits through aperture 26a in contact surface 24a.
- aperture 26a is open at one end 42 and contact surface 24a is formed in the shape of a "U".
- contact surface 24a is approximately the same width as the barrel in die direction across the legs of the "U" and is elongated in die orthogonal direction in order to facilitate its insertion between human ribs without undue spreading of the ribs.
- the particular angle of diversion d is determined, among odier things, by the angle of the prism, ⁇ , and the index of refraction of the material from which the prism is made. For example, for a diversion angle d of 30° in Fig. 3, the ⁇ angle of prism 40 would be 18° if die material were zinc selenide having a refractive index of 2.403 and the laser beam were a CO 2 laser beam having a wavelength 10.6 ⁇ .
- ⁇ is the angle that the incoming laser beam, 0,, Fig. 4, makes with die normal to die surface of the prism
- ⁇ 2 is the angle that die diverting laser beam makes with the normal to the exiting surface.
- ⁇ is die diversion angle of the laser beam leaving ⁇ ie first face internal to the prism and normal to the entrance surface.
- die index of refraction in this case is 2.403 for zinc selenide.
- the prism can be divided into two sections.
- prism 40a, Fig. 5 could be divided into two sections 42 and 44 each having a ⁇ of 9°. Then when the two sections 42 and 44 are rotated relative to one another the diversion angle d will vary between zero and 30°.
- die diversion angle d is 30°. When they are totally out of phase with one another, as shown in Fig. 6, then the diversion angle will be zero.
- prism sections 42 and 44 can be accomplished widi the mechanism shown in Fig. 7, where it is shown that barrel 22b of handpiece 20b includes internal bore 50 that receives a rotatable inner tube 52. Prism section 44 is attached by adhesive 54 to barrel 22b; prism section 42 is attached by adhesive 56 to die inner tube 52 that is rotatable with respect to barrel 22b.
- the position of the undiverted beam 28aa at 0° is shown in phantom line while the beam diverted to the full 30° is shown at 28 'aa.
- the contact surface 26a disposed at an angle to the original laser beam 28a and generally normal to the maximally diverted exiting beam at 30°.
- prism 40 is shown divided into two equal portions 42 and 44, this is not a necessary limitation of d e invention.
- the sections may be unequal so that instead of 50% each they are divided 60% -40%, 70% -30%, or any other ratio. However, when the sections are not equally divided die full range of 0-30° will not be obtained; the range will be diminished in accordance with the ratio.
- the example in this embodiment is of a 30° maximum diversion of the beam mis is not a necessary limitation of the invention as the prism can be calculated for any desired angle of diversion, taking into account the wavelength and index of refraction requirement.
- a gripping ring 60 on the outside of barrel 22b can be gripped by the user to rotate barrel 22b relative to inner tube 52 which is fixedly attached to die threaded connection portion 23a of handpiece 20b.
- the counter-rotation of the two prisms will divert die optical path of the transmitted beam in an arc, so that the focal point will travel in a radius "R", Fig. 7, from approximately die center of the two prisms.
- the contact surface then must also be curved about d is radius to provide a surface diat will be normal to the target tissue.
- the contact surface will have to remain fixed, relative to the counter-rotating prisms, so diat each degree of rotation of one prism in relation to the contact surface is matched by me opposing prism rotation in the opposite direction. This can be accomplished in Fig. 7 by connecting the contact surface 24aa to an outer tube 80 which can rotate about the middle tube 22b, and terminates in another gripping ring 70.
- the alignment of the three components can then be accomplished by aligning degree indications 72 and 76 on the outside surface of the respective gripping rings 23a and 70, Fig. 7A, widi alignment mark 74 on gripping ring 60.
- Quarter turns of ring 23a would men compare widi 1/8 turns of ring 70 in die same direction, relative to 60.
- a helium neon laser HeNe
- Prism 70 would dius have two sections, 72 and 74 which are fixed with respect to one another but have different indexes of refraction for the CO 2 and HeNe laser beam wavelengths.
- prism section 72 would have a first index of refraction N c for the CO 2 wavelength and a different index of refraction N H for the HeNe wavelength, while the second prism section 74 would have an index of refraction N' c for the CO 2 wavelength which would differ from the index of refraction of that wavelength N c in prism 72.
- index of refraction N' H of prism 74 would differ from the index of refraction N H for the HeNe laser wavelength in prism 72.
- each beam is diverted differently by die desired amount, through each separate element, 72 and 74, and yet they recombine as shown at 76 to strike the same target area 78. This configuration could be accomplished widi more than just two elements.
- the HeNe beam 78 and CO 2 beam 28 can be diverted but made to converge on the same target by incorporating an optical grating 100, Fig. 9, on surface 102 of prism 40b so that the grating is transparent to die wavelength of the CO 2 laser beam 28 but refracts the wavelengdi of die HeNe laser beam 78.
- Such a grating would be etched or scribed into the surface of die prism, as shown in Figs. 9 and 10.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9516624A JPH10500608A (en) | 1995-10-25 | 1996-10-09 | Bending beam ejection handpiece for laser or other monochromatic light source |
AU72619/96A AU7261996A (en) | 1995-10-25 | 1996-10-09 | Angled beam delivery handpiece for laser or other monochromatic light source |
EP96934126A EP0798989A1 (en) | 1995-10-25 | 1996-10-09 | Angled beam delivery handpiece for laser or other monochromatic light source |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/548,269 | 1995-10-25 | ||
US08/548,269 US5591161A (en) | 1995-10-25 | 1995-10-25 | Angled beam delivery handpiece for laser or other monochromatic light source |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997015235A1 true WO1997015235A1 (en) | 1997-05-01 |
Family
ID=24188099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1996/016135 WO1997015235A1 (en) | 1995-10-25 | 1996-10-09 | Angled beam delivery handpiece for laser or other monochromatic light source |
Country Status (6)
Country | Link |
---|---|
US (1) | US5591161A (en) |
EP (1) | EP0798989A1 (en) |
JP (1) | JPH10500608A (en) |
AU (1) | AU7261996A (en) |
CA (1) | CA2207678A1 (en) |
WO (1) | WO1997015235A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10225347B4 (en) * | 2001-06-14 | 2006-05-24 | Mobillasertec Gmbh | Device for laser processing |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6690963B2 (en) | 1995-01-24 | 2004-02-10 | Biosense, Inc. | System for determining the location and orientation of an invasive medical instrument |
US5807383A (en) * | 1996-05-13 | 1998-09-15 | United States Surgical Corporation | Lasing device |
US6283955B1 (en) | 1996-05-13 | 2001-09-04 | Edwards Lifesciences Corp. | Laser ablation device |
WO1998018394A1 (en) * | 1996-10-30 | 1998-05-07 | Plc Medical Systems, Inc. | Variable angle surgical laser handpiece |
US5976124A (en) * | 1998-01-05 | 1999-11-02 | Spectranetics Corporation | Phototherapy device and method |
US6135996A (en) * | 1998-04-17 | 2000-10-24 | Baxter International, Inc. | Controlled advancement lasing device |
US6263880B1 (en) | 1998-06-22 | 2001-07-24 | Neovasys, Inc. | Method of enhancing blood flow in tissue |
US20020107510A1 (en) * | 2001-02-05 | 2002-08-08 | Andrews Robert R. | Laser apparatus useful for myocardial revascularization |
US8881735B2 (en) * | 2008-11-18 | 2014-11-11 | Precise Light Surgical, Inc. | Flash vaporization surgical systems and method |
CA2773984C (en) * | 2009-09-14 | 2018-08-21 | Memorial Sloan-Kettering Cancer Center | Apparatus, system and method for providing laser steering and focusing for incision, excision and ablation of tissue in minimally-invasive surgery |
US10016238B2 (en) | 2009-09-14 | 2018-07-10 | Memorial Sloan Kettering Cancer Center | Apparatus, system and method for providing laser steering and focusing for incision, excision and ablation of tissue in minimally-invasive surgery |
US8870858B2 (en) * | 2009-11-18 | 2014-10-28 | Boston Scientific Scimed, Inc. | Methods and apparatus related to a side-fire assembly that has an optical grating |
US11253317B2 (en) | 2017-03-20 | 2022-02-22 | Precise Light Surgical, Inc. | Soft tissue selective ablation surgical systems |
KR102108530B1 (en) * | 2017-11-23 | 2020-05-13 | 경북대학교 산학협력단 | Implant handpiece |
WO2023217915A1 (en) * | 2022-05-10 | 2023-11-16 | Solta Medical Ireland Limited | Devices for applying electromagnetic energy with prismatic beam steering |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5254115A (en) * | 1990-10-11 | 1993-10-19 | The General Hospital Corporation | Coagulating scalpels |
US5257989A (en) * | 1990-02-07 | 1993-11-02 | Coherent, Inc. | Contact laser delivery probe |
US5342358A (en) * | 1993-01-12 | 1994-08-30 | S.L.T. Japan Co., Ltd. | Apparatus for operation by laser energy |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2826383A1 (en) * | 1978-06-16 | 1979-12-20 | Eichler Juergen | Probe for laser surgery - is tubular and placed against or inserted in tissue, with or without heated end |
SE462257B (en) * | 1986-04-22 | 1990-05-28 | Morita Mfg | LASER TYPE PIECE |
US4760840A (en) * | 1986-12-16 | 1988-08-02 | The Regents Of The University Of California | Endoscopic laser instrument |
US5112328A (en) * | 1988-01-25 | 1992-05-12 | Refractive Laser Research & Development Program, Ltd. | Method and apparatus for laser surgery |
US4955882A (en) * | 1988-03-30 | 1990-09-11 | Hakky Said I | Laser resectoscope with mechanical and laser cutting means |
US4963142A (en) * | 1988-10-28 | 1990-10-16 | Hanspeter Loertscher | Apparatus for endolaser microsurgery |
JPH10511005A (en) * | 1990-01-08 | 1998-10-27 | ヘルス リサーチ インコーポレイテッド | Submersible lens fiber optic assembly |
US5261904A (en) * | 1990-01-30 | 1993-11-16 | C. R. Bard, Inc. | Laser catheter having diffraction grating for beam shaping |
IL97130A (en) * | 1990-02-07 | 1995-07-31 | Coherent Inc | Contact laser delivery system |
IL96092A0 (en) * | 1990-10-23 | 1991-07-18 | ||
US5342352A (en) * | 1991-04-02 | 1994-08-30 | Franken Peter A | Laser debridement of wounds |
US5312398A (en) * | 1992-04-13 | 1994-05-17 | Coherent, Inc. | Apparatus for delivering a laser beam |
US5352221A (en) * | 1992-11-04 | 1994-10-04 | Fumich Robert M | Guide tip apparatus for laser surgery |
US5336215A (en) * | 1993-01-22 | 1994-08-09 | Intelligent Surgical Lasers | Eye stabilizing mechanism for use in ophthalmic laser surgery |
US5496309A (en) * | 1994-05-06 | 1996-03-05 | Trimedyne, Inc. | Catheter device utilizing a laser beam laterally directed by a high index prism in a liquid medium |
-
1995
- 1995-10-25 US US08/548,269 patent/US5591161A/en not_active Expired - Lifetime
-
1996
- 1996-10-09 CA CA002207678A patent/CA2207678A1/en not_active Abandoned
- 1996-10-09 EP EP96934126A patent/EP0798989A1/en not_active Withdrawn
- 1996-10-09 AU AU72619/96A patent/AU7261996A/en not_active Abandoned
- 1996-10-09 JP JP9516624A patent/JPH10500608A/en active Pending
- 1996-10-09 WO PCT/US1996/016135 patent/WO1997015235A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5257989A (en) * | 1990-02-07 | 1993-11-02 | Coherent, Inc. | Contact laser delivery probe |
US5254115A (en) * | 1990-10-11 | 1993-10-19 | The General Hospital Corporation | Coagulating scalpels |
US5342358A (en) * | 1993-01-12 | 1994-08-30 | S.L.T. Japan Co., Ltd. | Apparatus for operation by laser energy |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10225347B4 (en) * | 2001-06-14 | 2006-05-24 | Mobillasertec Gmbh | Device for laser processing |
Also Published As
Publication number | Publication date |
---|---|
US5591161A (en) | 1997-01-07 |
EP0798989A1 (en) | 1997-10-08 |
JPH10500608A (en) | 1998-01-20 |
CA2207678A1 (en) | 1997-05-01 |
AU7261996A (en) | 1997-05-15 |
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