← Product Code [HSB](/submissions/OR/subpart-d%E2%80%94prosthetic-devices/HSB) · K974720 # HOWMEDICA(R) FULLY THREADED SCREWS (K974720) _Howmedica, Inc. · HSB · Mar 13, 1998 · Orthopedic · SESE_ **Canonical URL:** https://fda.innolitics.com/submissions/OR/subpart-d%E2%80%94prosthetic-devices/HSB/K974720 ## Device Facts - **Applicant:** Howmedica, Inc. - **Product Code:** [HSB](/submissions/OR/subpart-d%E2%80%94prosthetic-devices/HSB.md) - **Decision Date:** Mar 13, 1998 - **Decision:** SESE - **Submission Type:** Traditional - **Regulation:** 21 CFR 888.3020 - **Device Class:** Class 2 - **Review Panel:** Orthopedic - **Attributes:** Therapeutic ## Intended Use The Howmedica® 3.7mm Fully Threaded Screws are intended to be used for crosslocking of Howmedica's intramedullary nails and IM rods. ## Device Story Howmedica® Fully Threaded Screws are orthopedic fixation components designed for cross-locking intramedullary (IM) nails and rods. The device consists of 3.7mm diameter stainless steel screws featuring a cortical buttress thread design. These screws are used by orthopedic surgeons in a clinical or surgical setting to secure IM nails/rods within the bone. The device functions as a mechanical fastener to provide stability to the IM fixation system. By locking the nail or rod in place, the screws prevent migration or rotation of the implant, thereby supporting bone fracture healing and patient recovery. ## Clinical Evidence Bench testing only. ## Technological Characteristics Material: medical grade stainless steel. Design: 3.7mm diameter screw with cortical buttress thread. Function: mechanical cross-locking of intramedullary nails/rods. No software or electronic components. ## Regulatory Identification An intramedullary fixation rod is a device intended to be implanted that consists of a rod made of alloys such as cobalt-chromium-molybdenum and stainless steel. It is inserted into the medullary (bone marrow) canal of long bones for the fixation of fractures. ## Predicate Devices - Howmedica's 4.6mm Fully Threaded Screws - Zimmer's Buttress Thread Screws - Zimmer's ZMS Recon Nail Cross-Locking Screw ## 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}------------------------------------------------ R a 74720 ## 510(k) Summary MAR 1 3 1998 | Proprietary Name: | Howmedica® Fully Threaded Screws | |----------------------------------|------------------------------------------------| | Common Name: | Intramedullary Rod | | Classification Name & Reference: | Intramedullary Fixation Rod
21 CFR 888.3020 | | Proposed Regulatory Class: | II | | Device Product Code: | 87HSB | For information contact: | | Vivian Kelly | |--|-----------------------------| | | Manager, Regulatory Affairs | | | Howmedica Inc. | | | 359 Veterans Boulevard | Veterans Boulevard Rutherford, NJ 07070 Telephone: (201) 507-7830 Fax: (201) 507-6870 Howmedica's Locking Nail Systems consist of different types of intramedullary nails/rods, cross-locking screws and end caps. This line extension is to add a smaller cross-locking screw for use with current Howmedica® IM rod and nail systems cleared under various 510(k) notifications plus any future styles of stainless steel IM rods or nails. The new screw is 3.7mm in diameter and is available in various lengths. It has a cortical buttress thread design for cross-locking of IM nails. The screws are manufactured from medical grade stainless steel. The Howmedica® Fully Threaded Screws are intended to be used for cross-locking of intramedullary nails and IM rods. The substantial equivalence of these components is based on an equivalence in intended use, materials, design, and operational principles to Howmedica's 4.6mm Fully Threaded Screws, Zimmer's Buttress Thread Screws and Zimmer's ZMS Recon Nail Cross-Locking Screw. {1}------------------------------------------------ Image /page/1/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" arranged around the perimeter. Inside the circle is an abstract image of an eagle or bird-like figure, depicted with stylized lines to represent its wings and body. Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850 MAR 1 3 1998 Ms. Vivian Kelly Manager, Regulatory Affairs Howmedica, Inc. Pfizer Hospital Products Group 359 Veterans Boulevard Rutherford, New Jersey 07070-2584 K974720 Re: Howmedica® Fully Threaded Screws Trade Name: II Regulatory Class: Product Code: нав Dated: December 17, 1997 December 18, 1997 Received: Dear Ms. Kelly: 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 The general controls provisions of the Act 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 requirement, as set forth in the Quality System Regulation (QS) 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 In addition, FDA may publish further announcements action. 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. {2}------------------------------------------------ ## Page 2 - Ms. Vivian Kelly 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) 594-4659. 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, ia M. Witten, Ph.D., M.D. Director Division of General and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health Enclosure {3}------------------------------------------------ ## Indications for Use K974720 510(k) Number (if known): Device Name: Howmedica® Fully Threaded Screws Indications for Use: The Howmedica® 3.7mm Fully Threaded Screws are intended to be used for crosslocking of Howmedica's intramedullary nails and IM rods. ## (PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrence of CDRH, Office of Device Evaluation (ODE) Prescription Use (Per 21 CFR 801.109) OR Over-The-Counter Use (Optional Format 1-2-96) bcoòela Sign-Off) General Restorative Devices 510(k) number: U974720 --- **Source:** [https://fda.innolitics.com/submissions/OR/subpart-d%E2%80%94prosthetic-devices/HSB/K974720](https://fda.innolitics.com/submissions/OR/subpart-d%E2%80%94prosthetic-devices/HSB/K974720) **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