Surgery – Instruments – Electrical application
Patent
1997-04-02
1999-07-20
Padgett, Marianne
Surgery
Instruments
Electrical application
606 49, 606 50, 427 212, 427 228, 604 20, A61B 1738, A61B 1736
Patent
active
059250453
ABSTRACT:
An electrosurgical instrument having a first electrode that includes an elongated, electrically conductive member and a second electrode that includes a layer of electrically conductive material adhered over at least a portion of a distal region of the elongated member and separated therefrom by an insulator. The electrodes receive electrical power in a proximal region of the instrument and apply the power to an object in the body by inducing current flow between the electrodes at the distal region. In a related aspect, the second electrode is configured so that the outer diameter of the distal region is substantially the same as the outer diameter of the distal end of the first electrode. In another aspect, one of the electrodes has a reduced circumferential extent relative to the other electrode to limit an area of current flow between the electrodes and thus restrict the size of the region in which cauterization occurs. Still another aspect of the invention features a process for fabricating the electrode assembly.
REFERENCES:
patent: 1814791 (1931-07-01), Ende
patent: 1916722 (1933-07-01), Ende
patent: 2249894 (1941-07-01), Goldenstein
patent: 3357858 (1967-12-01), Gravey
patent: 3397085 (1968-08-01), Cariou et al.
patent: 3461058 (1969-08-01), Haley, Jr. et al.
patent: 3503799 (1970-03-01), Aoki et al.
patent: 3808049 (1974-04-01), Caley et al.
patent: 3858586 (1975-01-01), Lessen
patent: 3900600 (1975-08-01), Spaulding
patent: 4043342 (1977-08-01), Morrison, Jr.
patent: 4476862 (1984-10-01), Pao
patent: 4483338 (1984-11-01), Bloom et al.
patent: 4548207 (1985-10-01), Reimels
patent: 4593691 (1986-06-01), Lindstrom et al.
patent: 4637392 (1987-01-01), Sorochenko
patent: 4686980 (1987-08-01), Williams et al.
patent: 4706667 (1987-11-01), Roos
patent: 4795660 (1989-01-01), Cooray et al.
patent: 4861624 (1989-08-01), Matsuda et al.
patent: 4862890 (1989-09-01), Stasz et al.
patent: 4876110 (1989-10-01), Blanch
patent: 4890610 (1990-01-01), Kirwan, Sr. et al.
patent: 5009656 (1991-04-01), Reimels
patent: 5318589 (1994-06-01), Lichtman
patent: 5336179 (1994-08-01), Yoon
Baumeister, et al, ed., Mark's Standard Handbook for Mechanical Engineers, 8th ed, McGraw-Hill Book Co., New York, excerpts pp. 6-42 to 6-46, 1978 (No Month).
Brown et al., "Internal Sclerectomy with an Automated Trephine for Advanced Glaucoma," Ophthalmology, vol. 95, No. 6, pp. 728-734 (Jun. 1988).
Brown et al., "Internal Sclerectomy for Glaucoma Filtering Surgery With an Automated Trephine," Arch Ophthalmol, vol. 105, pp. 133-136 (Jan. 1987).
Gaasterland et al., "Ab Interno and Ab Externo Filtering Operations by Laser Contact Surgery," Ophthalmic Surgery , vol. 18, No. pp. 254-257 (Apr. 1987).
Hasty et al., "Primate Trabeculetomies With 5-Fluoroacil Collagen Implants," American Journal of Ophthalmology, 109:721-725 (Jun. 1990).
Higginbotham et al., "Internal Sclerostomy with the Nd:YAG Contact Laser Versus Thermal Sclerostomy in Rabbits," Ophthalmology, vol. 95, No. 3, pp. 385-390 (Mar. 1988).
Jaffe et al., "Ab Interno Sclerostomy With a High-Powered Argon Endolaser," Arch Ophthalmol, vol. 107, pp. 1183-1185 (Aug. 1898).
Javitt et al., "Laser Sclerostomy ab interno Using a Continuous Wave Nd:YAG Laser," Ophthalmic Surgery, vol. 20, No. 8, pp. 552-556 (Aug. 1989).
McGuigan et al., "The Role of Subscleral Schele Procedure in Glaucoma Surgery," Ophthalmic Surgery, vol. 17, No. 12, pp. 802-807 (Dec. 1986).
Savage et al., "Coaxial Radio Frequency (RF) Diathermy in Anterior Segment Surgery," Opthalmic Surgery, vol. 16, No. 5, pp. 333-336 (May 1985).
The Association Research to Vision and Ophthalmology, Annual Meeting Abstract Issue, Apr.28-May 3, 1991.
Zimmerman et al., AB Interno Filtration Surgery, Dept. of Ophthalmology and Visual Sciences, University of Louisville, Louisville, KY (Abstract Only), Apr./May 1991.
Lee et al., AB Interno Filtration Surgery Part II., Dept. of Ophthalmol and Vis. Sci., Ky., Lions Eye Res. Inst., Univ. of Louisville, Louisville, KY (Abstract Only) Apr./May 1991.
Zimmerman, Thom J., "Let's Turn Glaucoma Filtering Surgery Inside Out," Clinical Research Forum, pp. 11-12 No Date.
Sachs et al., "Procedural Options in Cosmetic Blepharoplasty," Adv. Ohptl Plastics & Reconst. Surgery, vol. 2, pp. 55-74, 1983. No Month.
Bosniak et al., "Lipolytic Diathermy," Orbit, vol. 4, No. 1/2, pp. 157-160, Feb. 1985.
Bosniak, M.D., F.A.C.S., "Cosmetic Blepharoplasty", 1990, No month pp. 48, 72 73.
DORC, Instrumentation For use with Micro Surgical Systems for Anterior and Posterior Segment Surgery, no date.
"Parylene Coating for Medical Applications". Victor A. Bull No Source or Date Given.
Flynn, Jr., et al. "Cannulated Subretinal Fluid Aspirator for Vitreoretinal Microsurgery", Americal Journal of Ophthalmology, vol. 103, No. 1, pp. 106-108, Jan. 1987.
Parel, "A Bipolar Coaxial Microprobe for Safe Transvitreal Diathermy", Arch Ophthalmol, vol. 99, pp. 494-497, Mar. 1981.
Morrison Raymond
Reimels Harry G.
Mentor Corporation
Padgett Marianne
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