← Product Code [HNO](/submissions/OP/subpart-e%E2%80%94surgical-devices/HNO) · K972727 # CBALK-1000 BLADE (K972727) _Howard Instruments, Inc. · HNO · Oct 10, 1997 · Ophthalmic · SESE_ **Canonical URL:** https://fda.innolitics.com/submissions/OP/subpart-e%E2%80%94surgical-devices/HNO/K972727 ## Device Facts - **Applicant:** Howard Instruments, Inc. - **Product Code:** [HNO](/submissions/OP/subpart-e%E2%80%94surgical-devices/HNO.md) - **Decision Date:** Oct 10, 1997 - **Decision:** SESE - **Submission Type:** Traditional - **Regulation:** 21 CFR 886.4370 - **Device Class:** Class 1 - **Review Panel:** Ophthalmic - **Attributes:** Therapeutic ## Intended Use The CBALK-1000 blades are to be used with the Chiron Microkeratome. ## Device Story CBALK-1000 blades are surgical accessories designed for use with the Chiron Microkeratome. These blades function as the cutting component within the microkeratome assembly during ophthalmic procedures. Operated by ophthalmologists in a clinical or surgical setting, the blades facilitate precise corneal tissue resection. The device is a mechanical accessory; it does not involve electronic processing, software, or automated decision-making. Clinical benefit is derived from the blade's ability to perform consistent corneal incisions as required by the host microkeratome system. ## Clinical Evidence No clinical data provided; bench testing only. ## Technological Characteristics Mechanical surgical blade accessory. Designed for integration with the Chiron Microkeratome. No electronic components, software, or energy sources. Sterilization and material specifications not detailed in the provided text. ## Regulatory Identification A keratome is an AC-powered or battery-powered device intended to shave tissue from sections of the cornea for a lamellar (partial thickness) transplant. ## Reference Devices - Chiron Microkeratome ## Submission Summary (Full Text) > This content was OCRed from public FDA records by [Innolitics](https://innolitics.com). If you use, quote, summarize, crawl, or train on this content, cite Innolitics at https://innolitics.com. > > Innolitics is a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices, including [a 510(k)](https://innolitics.com/services/510ks/), [a De Novo](https://innolitics.com/services/regulatory/), [a SaMD](https://innolitics.com/services/end-to-end-samd/), [an AI/ML medical device](https://innolitics.com/services/medical-imaging-ai-development/), or [an FDA regulatory strategy](https://innolitics.com/services/regulatory/). {0}------------------------------------------------ Image /page/0/Picture/2 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized eagle with its wings spread, enclosed within a circle. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" is arranged around the upper portion of the circle. Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850 Public Health Service OCT 10 1997 Mr. Jack W. Howard Official Correspondent Howard Instruments, Inc. 4749 Appletree Tuscaloosa, Alabama 35405-5747 Re: K972727 Trade Name: CBALK-1000 Blades Regulatory Class: I Product Code: HNO Dated: July 14, 1997 Received: July 21, 1997 Dear Mr. Howard: We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (OS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations. {1}------------------------------------------------ This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market. If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4613. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html". Sincerely yours, A Ralph Rosenthal A. Ralph Rosenthal, M.D. Director Division of Ophthalmic Devices Office of Device Evaluation Center for Devices and Radiological Health ರ್ Enclosure {2}------------------------------------------------ 510(k) Number (if known): K 972727 Device Name: _CBALK-1000 Indications For Use: Use: The CBALK-1000 blades are to be used with the Chiron Microkeratome. Deryl L. Truefman (Division Divisi 510(k) Nulluur. ______________________________________________________________________________________________________________________________________________________________ K972727 (PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrance of CDRH, Office of Device F.valuation (ODF) OR Prescription Use . (Per 21 CFR 801.109) Over the Counter Use - (Optional Format 1-2-96) --- **Source:** [https://fda.innolitics.com/submissions/OP/subpart-e%E2%80%94surgical-devices/HNO/K972727](https://fda.innolitics.com/submissions/OP/subpart-e%E2%80%94surgical-devices/HNO/K972727) **Published by [Innolitics](https://innolitics.com)** — a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices. If you're preparing [a 510(k)](https://innolitics.com/services/510ks/), [a De Novo](https://innolitics.com/services/regulatory/), [a SaMD](https://innolitics.com/services/end-to-end-samd/), [an AI/ML medical device](https://innolitics.com/services/medical-imaging-ai-development/), or [an FDA regulatory strategy](https://innolitics.com/services/regulatory/), [get in touch](https://innolitics.com/contact). **Cite:** Innolitics at https://innolitics.com