← Product Code [LZI](/submissions/EN/subpart-d%E2%80%94prosthetic-devices/LZI) · K970974 # WILLIAMS SOUND, PERSONAL FM SYSTEM, HEARING HELPER (K970974) _Williams Sound, LLC · LZI · May 2, 1997 · Ear, Nose, Throat · SESE_ **Canonical URL:** https://fda.innolitics.com/submissions/EN/subpart-d%E2%80%94prosthetic-devices/LZI/K970974 ## Device Facts - **Applicant:** Williams Sound, LLC - **Product Code:** [LZI](/submissions/EN/subpart-d%E2%80%94prosthetic-devices/LZI.md) - **Decision Date:** May 2, 1997 - **Decision:** SESE - **Submission Type:** Traditional - **Regulation:** 21 CFR 874.3320 - **Device Class:** Class 2 - **Review Panel:** Ear, Nose, Throat - **Attributes:** Therapeutic ## Indications for Use To improve the signal to noise ratio for a listener in a variety of environments where background noise, poor acoustics, and distance from a desired sound source contribute to hearing difficulty. Any hearing and speech condition that can be improved by maximizing the signal to noise ratio for the listener. This includes: Low gain amplification for Attention Deficit Disorders, Learning Disabilities, Central Auditory Processing Disorders, amplification for mild to moderate conductive and sensorineural hearing loss, and amplification moderate to severe conductive and sensorineural hearing loss when used in conjunction with a personal hearing aid. ## Device Story Personal FM system (PFM 300/350) designed to assist individuals with hearing difficulties in environments with background noise or poor acoustics. Device captures audio via a remote microphone placed near a sound source; transmits signal via FM radio frequency to a receiver worn by the user. Receiver outputs amplified audio to the user via headphones, earphones, or direct audio input/telecoil connection to a personal hearing aid. Used in various settings to improve signal-to-noise ratio; operated by the user or caregiver. Benefits include improved speech intelligibility and reduced listening effort in challenging acoustic environments. ## Clinical Evidence No clinical data provided. Bench testing only. ## Technological Characteristics Personal FM system utilizing radio frequency transmission. Consists of a transmitter with microphone input and a receiver with audio output. Connectivity via direct audio input or telecoil for hearing aid integration. Analog signal processing. Form factor is portable/wearable. ## Regulatory Identification A group hearing aid or group auditory trainer is a hearing aid that is intended for use in communicating simultaneously with one or more listeners having hearing impairment. The device is used with an associated transmitter microphone. It may be either monaural or binaural, and it provides coupling to the ear through either earphones or earmolds. The generic type of device includes three types of applications: hardwire systems, inductance loop systems, and wireless systems. ## Special Controls *Classification.* Class II (special controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 874.9. ## 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 Food and Drug Administration 10903 New Hampshire Avenue Document Control Center – WO66-G609 Silver Spring, MD 20993-0002 Williams Sound Corporation Mr. Paul Ingebrigtsen Vice President, Marketing 10399 West 70th Street Eden Prairie, MN 55344-3459 JAN 10 2017 Re: K970974 Trade/Device Name: Williams Sound, Hearing Personal FM System Model PFM 300/350 Regulation Number: 21 CFR 874.3320 Regulation Name: Group hearing aid or group auditory trainer Regulatory Class: Class II Product Code: LZI Dated: March 11, 1997 Received: March 17, 1997 Dear Mr. Ingebrigtsen: This letter corrects our substantially equivalent letter of May 2, 1997. 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 application (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. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading. 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. Paul Ingebrigtsen 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 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); 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. If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH’s Office of Surveillance and Biometrics/Division of Postmarket Surveillance. You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Sincerely yours, Kesia Alexander for Malvina B. Eydelman, M.D. Director Division of Ophthalmic and Ear, Nose and Throat Devices Office of Device Evaluation Center for Devices and Radiological Health Enclosure {2} 5. 510(k) Number (if known): 970974 Device Name: HEARING HELPER® PERSONAL FM SYSTEM Indications For Use: Models PFH300 + PFM 358 A. General Indications: The indications for use of the assistive listening device in this submission is to amplify sound for individuals with impaired hearing. The device is indicated for individuals with hearing loss in the following category(ies). (Check appropriate space(s)): | Severity: | Configuration: | Other | | --- | --- | --- | | ☑ 1. Slight | ☐ 1. High Frequency - Precipitously Sloping | ☐ 1. Low tolerance To Loudness | | ☑ 2. Mild | ☑ 2. Gradually Sloping | ☐ 2. | | ☑ 3. Moderate | ☐ 3. Reverse Slope | ☐ 3. | | ☐ 4. Severe | ☑ 4. Flat | | | ☐ 5. Profound | ☐ 5. Other | | B. Specific Indications (Only if appropriate.): (Most psychoacoustic indications such as improved speech intelligibility in background noise, must be supported by clinical data.) 1. For improved signal to noise ratio through placement of a remote microphone near a desired sound source 2. Severe to profound loss - used in conjunction with personal hearing and via telecoil or direct audio input. 3. (PLEASE DO NOT WRITE BELOW THIS LINE. CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrence of CDRH, Office of Device Evaluation (ODE) David G. Sejorn (Division Sign-Off) Division of Reproductive, Abdominal, ENT, and Radiological Devices 510(k) Number: K970974 Restricted device (per 21 CFR 801.420 & 21 CFR 801.421) {3} Page 2 of 2 # EXHIBIT 3 ## INDICATION FOR USE: 510(k) Number (if known): Device Name: WILLIAMS SOUND, HEARING HELPER PERSONAL FM SYSTEM, Model PFM 300 / PFM 350 ## Indications for Use: To improve the signal to noise ratio for a listener in a variety of environments where background noise, poor acoustics, and distance from a desired sound source contribute to hearing difficulty. Any hearing and speech condition that can be improved by maximizing the signal to noise ratio for the listener. This includes: Low gain amplification for Attention Deficit Disorders, Learning Disabilities, Central Auditory Processing Disorders, amplification for mild to moderate conductive and sensorineural hearing loss, and amplification moderate to severe conductive and sensorineural hearing loss when used in conjunction with a personal hearing aid. Concurrence of CDRH, Office of Device Evaluation (ODE) Prescription Use: NA (Per 21CFR 801.109) OR Over the Counter: NA ![img-0.jpeg](img-0.jpeg) Optional Format 1-2-96 10399 West 70th Street Eden Prairie, MN 55344-3459 USA ![img-1.jpeg](img-1.jpeg) Phone: 800-328-6190 Phone: 612-943-2252 Fax: 612-943-2174 --- **Source:** [https://fda.innolitics.com/submissions/EN/subpart-d%E2%80%94prosthetic-devices/LZI/K970974](https://fda.innolitics.com/submissions/EN/subpart-d%E2%80%94prosthetic-devices/LZI/K970974) **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