Double edge surgical blade with undercut capability

- KMI, Inc.
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Description

FIG. 1 is a front elevational view of a double edge surgical blade with undercut capability showing our new design, the rear elevational view being identical thereto;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a front perspective view thereof.

Referenced Cited
U.S. Patent Documents
D258932 April 21, 1981 Graham
D282402 January 28, 1986 Schmidt et al.
D322673 December 24, 1991 Muller
1703305 February 1929 Jenkins
2049898 August 1936 Driest
2649860 August 1953 Royer
3716057 February 1973 Rubin
3945117 March 23, 1976 Beaver
4185634 January 29, 1980 Freedman
4324044 April 13, 1982 Shahinian, Jr.
4499898 February 19, 1985 Knepshield et al.
4538356 September 3, 1985 Knepshield et al.
4552146 November 12, 1985 Jensen et al.
4602630 July 29, 1986 Anis
4674503 June 23, 1987 Peyman et al.
4691716 September 8, 1987 Tanne
4730613 March 15, 1988 Gordy
4750489 June 14, 1988 Berkman et al.
4768509 September 6, 1988 Grosvenor et al.
4815218 March 28, 1989 Gordy
4898170 February 6, 1990 Hofmann et al.
5201747 April 13, 1993 Mastel
5217476 June 8, 1993 Wishinsky
5217477 June 8, 1993 Lager
5222967 June 29, 1993 Casebeer et al.
Foreign Patent Documents
0152489 June 1990 JPX
8700601 October 1988 NLX
1424814 September 1988 SUX
Other references
  • Toys and Novelties "Blades" p. 208 Aug. 1947. Assil et al., "The Undercut Technique Of Radial Keratotomy: A Comparison To The Combined Technique," Department of Ophthalmology, St. Louis University's Anheuser-Busch Eye Institute, St. Louis, Mo. Nov. 5, 1993. Codman/MICRA, "Titanium Instruments And Diamond Knives For Ophthalmology," Jan. 1985, Printed in USA, Dist. by Codman, Randolph, Mass., pp. 1-6. Waring, "Repeated Surgery For Residual Myopia And Hyperopia After Refractive Corneal Surgery," In: Waring G. G. ed. Refractive Keratotomy For Myopia And Astigmatism, St. Louis, Mo., Musby Yearbook Inc., 1991, pp. 641-668. Bores, "Historical Review And Clinical Results At Radial Keratotomy," In: Binder P. S. ed. International Ophthalmology Clinics Refractive Corneal Surgery: The Correction of Aphahia, Hyperopia And Myopia, Boston, Mass.: Little, Brown and Co., 1983, 23:93-118. Herbert, "The Diamond Knife--Rather More Than Meets The Eye," Industrial Diamond Review, May 1984. "The Surgical Armamentarium", American V. Mueller, p. 3 (1980). Melles, et al., "Effect of Radial Keratotomy Incision Direction on Wound Depth", Journal of Refractive & Corneal Surgery, vol. 6, pp. 394-403 (Nov./Dec. 1990). Buzard, "Deepening of Incisions After Radial Keratotomy Using the `Tickle` Technique", Journal of Refractive & Corneal Surgery, vol. 7, pp. 348-355 (Sep./Oct. 1991). Merlin et al., "Factors That Affect Keratotomy Depth", Journal of Refractive & Corneal Surgery, vol. 7, pp. 356-359 (Sep./Oct. 1991). KMI, Inc. Diamond blade configurations styles 18, 19, 24, 33, 3, 4, and 8, distributed during the 1980's. KOI Trade Literature entitled "Diamond Knife Configurations" (1990). KOI Trade Literature entitled "KOI Diamond Micrometers" (1991). CooperVision, KOI Division, Trade Literature entitled "Blade Configurations" (1986). KMI, Inc. Trade Literature entitled "Micrometer Diamond Knives" (1991). KMI, Inc. Trade Literature entitled "Cataract and General Surgery Diamond Knives" and Micrometer Diamond Surgical Knives (1989). KMI, Inc. Trade Literature entitled "Ophthalmology Update" (Mar. 1988). KMI, Inc. Trade Literature entitled "Diamond Surgical Knives" (1988). CooperVision, KOI Division, Trade Literature entitled "KOI Freehand Diamond Knife" (Copyright 1985). KMI, Inc. Trade Literature entitled "Multi-purpose KMI Freehand Diamond Knife is Ideal for Most Incisions" (1987). KMI, Inc. Trade Literature entitled "KMI Surgical Products Introduces a New Concept in Diamond Knives" (1989). CooperVision, KOI Division, Trade Literature entitled "CooperVision KOI Freehand and Micrometer Adjustable Diamond Knives Designed Specifically for Cutting Corneal Tissue" (1985). Article entitled "Thin-Profile Diamond Knife Blade Facilitates RK, Reduces Damage", Ophthamology Times, p. 5 (Oct. 1, 1990). International Facilities Corporation Trade Literature, "Microsurgical Diamond Knife" (undated). KMI, Inc. Trade Literature, "KMI `gems` are always in the right setting . . . " (1992). KMI, Inc. Trade Literature, "Radial and Astigmatic Keratotomy Instruments" (1992). KMI, Inc. Trade Literature, "Genesis. The Beginning of Safe Keratorefractive Surgery" (1992).
Patent History
Patent number: D358643
Type: Grant
Filed: Sep 25, 1992
Date of Patent: May 23, 1995
Assignee: KMI, Inc. (West Chester, PA)
Inventors: William R. Knepshield (Malvern, PA), Kristen S. Knepshield (Glen Mills, PA), Kerry K. Assil (St. Louis, MO)
Primary Examiner: A. Hugo Word
Assistant Examiner: I. Simmons
Law Firm: Duane, Morris & Heckscher
Application Number: 7/951,424
Classifications
Current U.S. Class: Cutting, Abrading, Scraping Or Puncturing (31) (D24/146)