← Product Code [NFQ](/submissions/DE/subpart-b%E2%80%94diagnostic-devices/NFQ) · K970116 # ESG-1 ELECTROSONOGRAM (ESG-1) (K970116) _Myo-Tronics, Inc. · NFQ · Apr 2, 1997 · Dental · SESE_ **Canonical URL:** https://fda.innolitics.com/submissions/DE/subpart-b%E2%80%94diagnostic-devices/NFQ/K970116 ## Device Facts - **Applicant:** Myo-Tronics, Inc. - **Product Code:** [NFQ](/submissions/DE/subpart-b%E2%80%94diagnostic-devices/NFQ.md) - **Decision Date:** Apr 2, 1997 - **Decision:** SESE - **Submission Type:** Traditional - **Regulation:** 21 CFR 872.2050 - **Device Class:** Class 1 - **Review Panel:** Dental ## Intended Use The ELECTROSONOGRAM ESG-I is a non-invasive device that measures and records sounds emitted from the temporomandibular (jaw) joint along with the relative position of the jaw as a means of assessing the status of the temporomandibular joint. ## Device Story Non-invasive diagnostic device; measures and records sounds emitted from temporomandibular joint (TMJ) and relative jaw position; used to assess TMJ status. Device functions as a sonograph; captures acoustic signals from jaw joint; records jaw movement data. Used in clinical settings by dental professionals. Output provides objective data on joint sounds and position to assist clinicians in evaluating joint health and diagnosing TMJ disorders. ## Clinical Evidence No clinical data provided; substantial equivalence based on technological characteristics and intended use compared to the predicate device. ## Technological Characteristics Non-invasive dental sonography device; records acoustic signals and jaw position; intended for TMJ assessment. Technical specifications and materials not detailed in provided documentation. ## Regulatory Identification A dental sonography device for interpretation and diagnosis is an electrically powered device, intended to interpret temporomandibular joint sounds for the diagnosis of temporomandibular joint disorders and associated orofacial pain. The device detects, records, displays, and stores sounds made by the temporomandibular joint during jaw movement. The device interprets these sounds to generate meaningful output, either directly or by connection to a personal computer. The device may be part of a system of devices, contributing joint sound information to be considered with data from other diagnostic components. ## Special Controls *Classification.* Class II (special controls). The special control for this device is FDA's guidance document entitled “Class II Special Controls Guidance Document: Dental Sonography and Jaw Tracking Devices.” ## Predicate Devices - SONOPAK/QS (BioResearch) ## 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} DEPARTMENT OF HEALTH & HUMAN SERVICES Public Health Service JUL 21 2005 Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850 Mr. Fray Adib President Myotronics-Noromed, Incorporated 15425 53rd Ave South Tukwila, Washington 98188 Re: K970116 Trade/Device Name: ESG-1 Electrosonogram (ESG-1) Regulation Number: 21 CFR 872.2050 Regulation Name: Dental sonography device Regulatory Class: I Product Code: NFQ and NFS Dated: January 10, 1997 Received: January 13, 1997 Dear Mr. Adib This letter corrects our substantially equivalent letter of April 2, 1997, regarding the classification of your device which was incorrectly identified as "unclassified." We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent, for the indications for use stated in the enclosure, to legally marketed predicate 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) that do not require approval of a premarket approval (PMA). 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 (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register. {1} Page 2 – Mr. Fray Adib Please be advised that FDA’s issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (sections 531-542 of the Act); 21 CFR 1000-1050. This letter will allow you to continue marketing your device as described in your Section 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), please contact the Office of Compliance at (240) 276-0115. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address http://www.fda.gov/cdrh/industry/support/index.html Sincerely yours, ![img-0.jpeg](img-0.jpeg) Chiu S. Lin, PhD Director Division of Anesthesiology, General Hospital, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health Enclosure {2} 510(k) Number (if known): _________________________ Device Name: ESG-1 Electrosonogram, Version 3.0-S Indications For Use: The original 510(k) for this device, K-905449/A, contained the following indications for use: "The ELECTROSONOGRAM ESG-I is a non-invasive device that measures and records sounds emitted from the temporomandibular (jaw) joint along with the relative position of the jaw as a means of assessing the status of the temporomandibular joint." This 510(k) does not expand upon those indications. (PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrence of CDRH, Office of Device Evaluation (ODE) (Division Sign-Off) Division of Dental, Infection Control, and General Hospital Devices 510(k) Number K 970116 Description Use ☑ Order 21 CFR 801.109) OR Over-The-Counter Use (Optional Format 1-2-96) {3} 1<970116 APR - 2 1997 MYO-TRONICS, INC. LMA # 510(k) SUMMARY ## 1. Submitter’s Information Date of Submission: January 10, 1997 Submitter’s name and address: Myo-tronics, Inc., 15425 - 53 Ave. So., Tukwila, WA 98188 Tel: (206) 243-4214 FAX: (206) 243-3625 Contact Name: Mr. Fray Adib ## 2. Device Trade Name: Common name: ESG-1 Electrosonogram or Sonograph Classification name: Temporomandibular Joint Sound Recorder Unclassified ## 3. Myo-tronics’ ESG-1 Electrosonogram is substantially equivalent to: SONOPAK/QS manufactured by BioResearch of Milwaukee, Wisconsin. ## 4. Description of the device: ESG-1 Electrosonogram is a non-invasive device that measures and records sounds emitted from the temporomandibular joint along with the relative position of the jaw as a means of assessing the status of the temporomandibular joint. ## 5. The ESG-1 Electrosonogram has the same technological characteristics as the above mentioned predicate device. WORLD LEADERSHIP FOR OVER 25 YEARS 15425 - 53rd AVENUE SOUTH, TUKWILA, WA 98188 1-800-426-0316 • (206) 243-4214 • FAX: (206) 243-3625 --- **Source:** [https://fda.innolitics.com/submissions/DE/subpart-b%E2%80%94diagnostic-devices/NFQ/K970116](https://fda.innolitics.com/submissions/DE/subpart-b%E2%80%94diagnostic-devices/NFQ/K970116) **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. 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