ENTOMED SCREENING AUDIOMETER, MODEL SA201,SA202, ENTOMED DIAGNOSTIC AUDIOMETER MODEL SA203,SA204
K092111 · Entomed AB · EWO · Oct 2, 2009 · Ear, Nose, Throat
Device Facts
Record ID
K092111
Device Name
ENTOMED SCREENING AUDIOMETER, MODEL SA201,SA202, ENTOMED DIAGNOSTIC AUDIOMETER MODEL SA203,SA204
Applicant
Entomed AB
Product Code
EWO · Ear, Nose, Throat
Decision Date
Oct 2, 2009
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 874.1050
Device Class
Class 2
Attributes
Pediatric
Indications for Use
The Entomed SA 201/202/203/204 series of audiometers are screening and diagnostic audiometers used to determine hearing thresholds and assist to diagnose hearing loss. The audiometer can be used on the majority of adults and children (from 4 years of age and upwards). The test person has to be able to understand the basic principles of the test method when explained by the operator.
Device Story
Electroacoustic audiometers (SA201/202 screening; SA203/204 diagnostic) generate controlled test tones and signals for hearing threshold determination. Inputs include manual operator controls and patient response switches; SA203/204 include synchronized masking. Digital signal processor generates frequencies; outputs delivered via headphones (TDH39, Sennheiser HDA200, EARtone 5A) or bone vibrators (B71). Used in clinical settings by audiologists, ENT specialists, or trained nurses. Device assists clinicians in diagnosing hearing loss by measuring patient response to stimuli. Modernized digital generation replaces traditional analog tone generation; calibration and operational software stored on removable Compact Flash (CF) cards to enhance security and prevent unauthorized calibration changes.
Clinical Evidence
Bench testing only. Performance verified against IEC 60645-1, IEC 60645-2, ISO 389 series, and ISO 8253 series standards for audiometric equipment and test methods.
Technological Characteristics
Digital signal processor-based tone generation; RoHS compatible. Dimensions: 37.6x26.4x7.3 cm; Weight: 1.15-1.25 kg. Power: External 100-240V. Connectivity: CF card slots for calibration/operation. Transducers: TDH39, Sennheiser HDA200, EARtone 5A, B71 bone vibrator. Standards: IEC 60645-1/2, ISO 389-1/2/3/4/7, ISO 8253-1/2/3, IEC 60601-1, IEC 60601-1-2.
Indications for Use
Indicated for determining hearing thresholds and diagnosing hearing loss in adults and children aged 4 years and older capable of understanding test principles.
Regulatory Classification
Identification
An audiometer or automated audiometer is an electroacoustic device that produces controlled levels of test tones and signals intended for use in conducting diagnostic hearing evaluations and assisting in the diagnosis of possible otologic disorders.
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# OCT - 2 2009
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1092111
## Summary of 510(k) owners administrative data
COMPANY NAME AND ADDRESS:
CONTACT PERSON:
EMAIL:
1
TELEPHONE NUMBER:
FAX:
TRADE NAME OF DEVICE:
COMMON NAME:
CLASSIFICATION:
PREDICATE DEVICE:
DATE SUMMARY PREPARED:
Entomed AB Bariumgatan 29 213 64 Malmö Sweden
Charlotte Mattisson
charlotte.mattisson@entomed.se
+ 46 (40) - 210090
+ 46 (40) - 210092
Entomed SA201/202 Screening Audiometer and Entomed SA203/204 Diagnostic Audiometer
Audiometer
Class II Medical Device, Reg no 874.1050, Product Code EWO
Interacoustic Diagnostic Audiometer AD229b and GSI 61 Clinical Audiometer
July 10 2009
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### 2 Entomed AB
Entomed is a Swedish specialist company within the ENT (Ear-Nose-Throat) sector, founded 1986, with home production of audiometers, and an extensive agency business for Welch Allyn and diagnostical instruments from Grason-Stadler (GSI), Maico, and Oriola.
Up to year 2007 Entomed products were sold and distributed by GSI under the brand name GSI 66, GSI 67 and GSI 68. Since 2008 the products are sold directly from Entomed through a worldwide distributor network, under the brand names SA201TM SA202TM, SA 203TM and SA204TM
The SA20X series audiometer presented in this 510(k) submission is a new modernized generation of the well reputed product line. The new generation is digital and RoHS compatible.
## 3 Description of the device
The SA 201/202/203/204 audiometers are electroacoustic devices that produces controlled levels of test tones and signals.
The SA201/202 are IEC 60645 Type 4 Pure Tone Audiometers and the SA203/204 Diagnostic Audiometers are IEC 60645 Type 3 Audiometers.
The SA201/202 are manual pure tone air conduction, screening audiometers. SA202 has the additional capability to perform automatic pure tone audiometry.
The SA203/204 are both automatic air and bone conduction audiometers with synchronized masking possibility in order to avoid overhearing to the not tested ear. The SA 204 has the additional capability of using speech-testing. Both can be operated manually if required.
All models can be used for determination of hearing thresholds and assist to diagnose hearing loss.
All models, 201/202/203/204 have a built-in microphone for easier communication with the test person. Furthermore they all have outputs for TDH39, Sennheiser HDA200 and EARtone 5A insert ear phones. SA203/204 have outputs for B71 Bone Conductor and Free-field system (optional).
All models should be operated by people with education/training within the field of audiometry such as Audiologists. Hearing Aid dispensers, Health Care and School nurses with appropriate training in audiology and Ear Nose Throat specialists.
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The performance characteristics for the SA 201/202/203/204 are such that they meet or exceed the following standards:
| Standard | Name | SA201 | SA202 | SA203 | SA204 |
|--------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------|-------|-------|-------|
| IEC 60645-1 (1992) | Audiometers Part1; Pure Tone Audiometers | x | x | x | x |
| IEC 60645-2(1993) | Audiometers Part 2; Equipment for Speech Audiometry | NA | NA | NA | x |
| ISO 389:1991 | Calibration of Air Conduction Audiometers | x | x | x | x |
| ISO 389-2 | Calibration of Insert Phones | x | x | x | x |
| ISO 389-3 | Calibration of Bone Vibrators | NA | NA | x | x |
| ISO 389-4 | Calibration of Narrow Band Masking Noise | NA | NA | x | x |
| ISO 389-7 | Calibration of Free Field Audiometers | NA | NA | x | x |
| IEC 60601-1 2nd edition 1988 | Medical Electrical Equipment Part1: General Requirements for Safety | x | x | x | x |
| IEC 60601-1-2 3rd edition 2007 | Medical Electrical Equipment Part1-2: General Requirements for Basic Safety and Essential Performance-Collateral Standard: Electromagnetic Compatibility - Requirements and Tests | x | x | x | x |
| ISO 8253-1 | Audiometric Test Methods Part1; Basic Pure Tone Air and Bone Conduction Threshold Audiometry | x | x | x | x |
| ISO 8253-2 | Audiometric Test Methods Part 2; Sound Field Audiometry with Pure Tone and Narrow Band Test Signals | NA | NA | x | x |
| ISO 8253-3 | Audiometric Test Methods Part 3 Speech Audiometry | NA | NA | NA | x |
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NA = Not Applicable
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### Indication for use. 4
The Entomed SA 201/202/203/204 series of audiometers are screening and diagnostic audiometers used to determine hearing thresholds and assist to diagnose hearing loss.
The audiometer can be used on the majority of adults and children (from 4 years of age and upwards). The test person has to understand the basic principles of the test method when explained by the operator.
## 5 Summary of Performance Comparison between SA 204 and Interacoustic AD 229b (predicate) and GSI 61 (predicate)
The predicates selected for the SE discussion in this 510(k) are the Interacoustic Diagnostic Audiometer AD229b and GSI 61 Clinical Audiometer. The technical features of the SA204 are very similar to the Interacoustic AD 229b. However, the technical design using two separate, identical channels differs between the SA204 and the Interacoustic AD 229. The SA204 has 2 identical channels. By adding another predicate to the SE discussion that also has 2 identical channels, the GSI 61, it is shown that the technical solution to use two identical channels is well known and accepted.
Similarities between the predicates are presented in Tables 1a-1d and differences between the predicates are presented in Tables 2a - 2d.
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| Comparison<br>Parameter | SA204 | Interacoustic AD229b | GSI 61 |
|----------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Intended use | "The Entomed SA<br>201/202/203/204 series of<br>audiometers are screening<br>(201/202) and diagnostic<br>(203/204) audiometers used<br>to determine hearing<br>thresholds and assist to<br>diagnose hearing loss<br>The audiometer can be used<br>on the majority of adults<br>and children (from 4 years<br>of age and upwards). The<br>test person has to be able to<br>understand the basic<br>principles of the test method<br>when explained by the<br>operator" | "The Interacoustic Model AD229<br>Diagnostic Audiometer is indicated<br>for use in conducting diagnostic<br>hearing evaluations and assisting<br>in the diagnosis of possible<br>otologic disorders.<br>Because of its master hearing aid<br>capability this device is also<br>indicated for simulating a hearing<br>aid during audiometric testing thus<br>it may help in the selection and<br>adjustment of a patient's hearing<br>aid". (statement obtained from<br>510(k) summary from 510(k)<br>application k982249) | Determine hearing thresholds and<br>assist to diagnose hearing loss. It<br>can also be used in the selection<br>and adjustment of a patient's<br>hearing aid. |
| Air<br>Conduction<br>Pure Tone -<br>Frequency<br>Range and<br>Format | Range:<br>125, 250, 500, 750, 1000,<br>1500, 2000, 3000, 4000,<br>6000, 8000 Hz<br>Format:<br>Steady,<br>Pulsed (2.5 pulses/sec),<br>Frequency Modulation<br>(Warble: ± 5 % triangular<br>10 Hz at 8 kHz, 8 Hz at 6<br>kHz and 5 Hz at 125 Hz - 4<br>kHz) | Range:<br>125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz.<br>Format:<br>Steady,<br>Multiple Pulses (250-5000 msec.<br>on/off),<br>Frequency Modulation (Warble: ±<br>5 % , 5Hz true sine wave) | Range:<br>125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz).<br>Format:<br>Steady,<br>Pulsed (Tone pulsed 200 msec ON,<br>200 msec OFF),<br>Frequency Modulation (Tone<br>modulated ± 5 % of centre<br>frequency at a rate of 5 Hz) |
| Bone<br>Conduction -<br>Frequency<br>Range | 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000,<br>8000 Hz | 250, 500, 750, 1000, 1500, 2000,<br>3000, 4000, 6000, 8000 Hz | 250, 500, 750, 1000, 1500, 2000,<br>3000, 4000, 6000, 8000 Hz |
| Narrow Band<br>Noise Range | 125, 250, 500, 750, 1000,<br>1500, 2000, 3000, 4000,<br>6000, 8000 Hz | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz) |
| Speech Noise<br>Range | 125, 250, 500, 750, 1000,<br>1500, 2000, 3000, 4000,<br>6000, 8000 Hz | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz) |
| Synchronous<br>Masking | Locks the noise attenuator<br>to the tone attenuator | Locks channel 2 attenuator to<br>channel 1 attenuator | Locks the noise attenuator to the<br>tone attenuator |
| Speech<br>Channel L and<br>R | Microphone: Input for live<br>speech testing and<br>communications<br>IN1 and IN2: Inputs for<br>recorded speech material<br>from external stereo<br>CD/tape player | Microphone: Input for live speech<br>testing and communications<br>Channel 1 and Channel 2: Inputs<br>for 2 channels for prerecorded<br>material<br>Speech Noise: Narrow Band noise<br>or White noise | Microphone: Input for live speech<br>testing and communications<br>External A and External B:<br>Accepts recorded speech material<br>from external stereo tape cassette<br>or CD player<br>Speech Noise: White noise |
| Table 1a Similarities between SA204 and Interacoustic AD229b and GSI 61 | | | | | | | |
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| | Speech Noise: White noise<br>filtered to a low and middle<br>frequency band, simulating<br>the average spectrum of<br>conversational speech | | |
|----------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Communicatio<br>n<br>Operator/Test<br>subject | Talk Forward, Talk back<br>and Monitor / Live Speech<br>monitor headset | Talk Forward, Talk back and<br>Monitor / Live Speech monitor<br>headset | Talk Forward, Talk back and<br>Monitor / Live Speech monitor<br>headset |
| Transducers | TDH39,<br>EARTone 5A,<br>Sennheiser HDA 200,<br>Radioear B71 bone vibrator | TDH39,<br>EARTone 5A,<br>Sennheiser HDA 200,<br>Radioear B71 bone vibrator | TDH50P,<br>EARTone 3A,<br>Single Insert Phone $(470 \Omega)$<br>Sennheiser HDA 200,<br>Radioear B71 bone vibrator |
| Tone<br>Presentation | Manual<br>Single Pulse<br>Multiple Pulses<br>Frequency Modulation | Manual or Reverse<br>Single Pulse<br>Multiple Pulses<br>Frequency Modulation | Manual or Reverse<br>Single Pulse<br>Multiple Pulses<br>Frequency Modulation |
| Patient signal | Test subject response switch<br>push button | Reed switch push button | Subject response hand switch |
| Store<br>Function: | Internal Memory for AC<br>L/R and BC L/R | Internal Memory for AC L/R and<br>BC L/R and full speech curve | No internal memory for either AC<br>L/R, BC L/R or speech curve |
| Test: Auto<br>Threshold | Patient controlled Hughson<br>Westlake procedure<br>according to ISO 8253-1 | Patient controlled Hughson<br>Westlake procedure according to<br>ISO 8253-1 or OSHA procedure<br>with automatic re-check (US<br>edition only) | No auto threshold function<br>available |
| Comparison<br>Parameter | SA203 | Interacoustic AD229b | GSI 61 |
| Intended use | "The Entomed SA<br>201/202/203/204 series of<br>audiometers are screening<br>(201/202) and diagnostic<br>(203/204) audiometers used<br>to determine hearing<br>thresholds and assist to<br>diagnose hearing loss<br>The audiometer can be used<br>on the majority of adults<br>and children (from 4 years<br>of age and upwards). The<br>test person has to be able to<br>understand the basic<br>principles of the test method<br>when explained by the<br>operator" | "The Interacoustic Model AD229<br>Diagnostic Audiometer is indicated<br>for use in conducting diagnostic<br>hearing evaluations and assisting<br>in the diagnosis of possible<br>otologic disorders.<br>Because of its master hearing aid<br>capability this device is also<br>indicated for simulating a hearing<br>aid during audiometric testing thus<br>it may help in the selection and<br>adjustment of a patient's hearing<br>aid". | Determine hearing thresholds and<br>assist to diagnose hearing loss. It<br>can also be used in the selection<br>and adjustment of a patient's<br>hearing aid. |
| Air<br>Conduction<br>Pure Tone -<br>Frequency<br>Range and<br>Format | Range:<br>125, 250, 500, 750, 1000,<br>1500, 2000, 3000, 4000,<br>6000, 8000 Hz<br>Format:<br>Steady,<br>Pulsed (2.5 pulses/sec),<br>Frequency Modulation<br>(Warble: ± 5 % triangular<br>10 Hz at 8 kHz, 8 Hz at 6<br>kHz and 5 Hz at 125 Hz - 4<br>kHz) | Range:<br>125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz<br>Format:<br>Steady,<br>Multiple Pulses (250-5000 msec.<br>on/off ),<br>Frequency Modulation (Warble: ±<br>5 % , 5Hz true sine wave) | Range:<br>125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz).<br>Format:<br>Steady,<br>Pulsed (Tone pulsed 200 msec ON,<br>200 msec OFF),<br>Frequency Modulation (Tone<br>modulated ± 5 % of centre<br>frequency at a rate of 5 Hz) |
| Bone<br>Conduction -<br>Frequency<br>Range | 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000,<br>8000 Hz | 250, 500, 750, 1000, 1500, 2000,<br>3000, 4000, 6000, 8000 Hz | 250, 500, 750, 1000, 1500, 2000,<br>3000, 4000, 6000, 8000 Hz |
| Narrow Band<br>Noise Range | 125, 250, 500, 750, 1000,<br>1500, 2000, 3000, 4000,<br>6000, 8000 Hz | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz) |
| Speech Noise<br>Range | Speech Noise not available | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz) |
| Synchronous<br>Masking | Locks the noise attenuator<br>to the tone attenuator | Locks channel 2 attenuator to<br>channel 1 attenuator | Locks the noise attenuator to the<br>tone attenuator |
| Speech<br>Channel L and<br>R | Speech Channels L and R<br>are not available | Microphone: Input for live speech<br>testing and communications<br>Channel 1 and Channel 2: Inputs | Microphone: Input for live speech<br>testing and communications<br>External A and External B: |
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Table 1b. Similarities between SA203 and Interacoustic AD 229b and GSI 61
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| | | material<br>Speech Noise: Narrow Band noise<br>or White noise | from external stereo tape cassette<br>or CD player<br>Speech Noise: White noise |
|----------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Communicatio<br>n<br>Operator/Test<br>subject | Talk Forward | Talk Forward, Talk back and<br>Monitor / Live Speech monitor<br>headset | Talk Forward, Talk back and<br>Monitor / Live Speech monitor<br>headset |
| Transducers | TDH39,<br>EARTone 5A,<br>Sennheiser HDA 200,<br>Radioear B71 bone vibrator | TDH39,<br>EARTone 5A,<br>Sennheiser HDA 200,<br>Radioear B71 bone vibrator | TDH50P,<br>EARTone 3A,<br>Single Insert Phone (470 Ω )<br>Sennheiser HDA 200,<br>Radioear B71 bone vibrator |
| Tone<br>Presentation | Manual<br>Single Pulse<br>Multiple Pulses<br>Frequency Modulation | Manual or Reverse<br>Single Pulse<br>Multiple Pulses<br>Frequency Modulation | Manual or Reverse<br>Single Pulse<br>Multiple Pulses<br>Frequency Modulation |
| Patient signal | Test subject response switch<br>push button | Reed switch push button | Subject response hand switch |
| Store<br>Function: | Internal Memory for AC<br>L/R and BC L/R | Internal Memory for AC L/R and<br>BC L/R and full speech curve | No internal memory for either AC<br>L/R, BC L/R or speech curve |
| Test: Auto<br>Threshold | Patient controlled Hughson<br>Westlake procedure<br>according to ISO 8253-1 | Patient controlled Hughson<br>Westlake procedure according to<br>ISO 8253-1 or OSHA procedure<br>with automatic re-check (US<br>edition only) | No auto threshold function<br>available |
| Comparison<br>Parameter | SA202 | Interacoustic AD229b | GSI 61 |
| Intended use | "The Entomed SA<br>201/202/203/204 series of<br>audiometers are screening<br>(201/202) and diagnostic<br>(203/204) audiometers used<br>to determine hearing<br>thresholds and assist to<br>diagnose hearing loss<br>The audiometer can be used<br>on the majority of adults<br>and children (from 4 years<br>of age and upwards). The<br>test person has to be able to<br>understand the basic<br>principles of the test method<br>when explained by the<br>operator" | "The Interacoustic Model AD229<br>Diagnostic Audiometer is indicated<br>for use in conducting diagnostic<br>hearing evaluations and assisting<br>in the diagnosis of possible<br>otologic disorders.<br>Because of its master hearing aid<br>capability this device is also<br>indicated for simulating a hearing<br>aid during audiometric testing thus<br>it may help in the selection and<br>adjustment of a patient's hearing<br>aid". | Determine hearing thresholds and<br>assist to diagnose hearing loss. It<br>can also be used in the selection<br>and adjustment of a patient's<br>hearing aid. |
| Air<br>Conduction<br>Pure Tone -<br>Frequency<br>Range and<br>Format | Range:<br>125, 250, 500, 750, 1000,<br>1500, 2000, 3000, 4000,<br>6000, 8000 Hz<br>Format:<br>Steady,<br>Pulsed (2.5 pulses/sec),<br>Frequency Modulation<br>(Warble: ± 5 % triangular<br>10 Hz at 8 kHz, 8 Hz at 6<br>kHz and 5 Hz at 125 Hz - 4<br>kHz) | Range:<br>125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz<br>Format:<br>Steady,<br>Multiple Pulses (250-5000 msec.<br>on/off ),<br>Frequency Modulation (Warble: ±<br>5 % , 5Hz true sine wave) | Range:<br>125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz).<br>Format:<br>Steady,<br>Pulsed (Tone pulsed 200 msec ON,<br>200 msec OFF),<br>Frequency Modulation (Tone<br>modulated ± 5 % of centre<br>frequency at a rate of 5 Hz) |
| Bone<br>Conduction -<br>Frequency<br>Range | Bone conduction not<br>available | 250, 500, 750, 1000, 1500, 2000,<br>3000, 4000, 6000, 8000 Hz | 250, 500, 750, 1000, 1500, 2000,<br>3000, 4000, 6000, 8000 Hz |
| Narrow Band<br>Noise Range | Narrow Band Noise not<br>available | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz) |
| Speech Noise<br>Range | Speech Noise not available | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz) |
| Synchronous<br>Masking | Synchronous Masking not<br>available | Locks channel 2 attenuator to<br>channel 1 attenuator | Locks the noise attenuator to the<br>tone attenuator |
| Speech<br>Channel L and<br>R | Speech Channel L and R not<br>available | Microphone: Input for live speech<br>testing and communications<br>Channel 1 and Channel 2: Inputs<br>for 2 channels for prerecorded | Microphone: Input for live speech<br>testing and communications<br>External A and External B:<br>Accepts recorded speech material |
| | | material<br>Speech Noise: Narrow Band noise<br>or White noise | from external stereo tape cassette<br>or CD player<br>Speech Noise: White noise |
| Communicatio<br>n<br>Operator/Test<br>subject | Talk Forward | Talk Forward, Talk back and<br>Monitor / Live Speech monitor<br>headset | Talk Forward, Talk back and<br>Monitor / Live Speech monitor<br>headset |
| Transducers | TDH39,<br>EARTone 5A,<br>Sennheiser HDA 200 | TDH39,<br>EARTone 5A,<br>Sennheiser HDA 200,<br>Radioear B71 bone vibrator | TDH50P,<br>EARTone 3A,<br>Single Insert Phone (470 Ω )<br>Sennheiser HDA 200,<br>Radioear B71 bone vibrator |
| Tone<br>Presentation | Manual<br>Single Pulse<br>Multiple Pulses<br>Frequency Modulation | Manual or Reverse<br>Single Pulse<br>Multiple Pulses<br>Frequency Modulation | Manual or Reverse<br>Single Pulse<br>Multiple Pulses<br>Frequency Modulation |
| Patient signal | Test subject response switch<br>push button | Reed switch push button | Subject response hand switch |
| Store<br>Function: | Internal Memory for AC<br>L/R | Internal Memory for AC L/R and<br>BC L/R and full speech curve | No internal memory for either AC<br>L/R, BC L/R or speech curve |
| Test: Auto<br>Threshold | Patient controlled Hughson<br>Westlake procedure<br>according to ISO 8253-1 | Patient controlled Hughson<br>Westlake procedure according to<br>ISO 8253-1 or OSHA procedure<br>with automatic re-check (US edition only) | No auto threshold function<br>available |
| Comparison<br>Parameter | SA201 | Interacoustic AD229b | GSI 61 |
| Intended use | "The Entomed SA<br>201/202/203/204 series of<br>audiometers are screening<br>(201/202) and diagnostic<br>(203/204) audiometers used<br>to determine hearing<br>thresholds and assist to<br>diagnose hearing loss<br>The audiometer can be used<br>on the majority of adults<br>and children (from 4 years<br>of age and upwards). The<br>test person has to be able to<br>understand the basic<br>principles of the test method<br>when explained by the<br>operator" | "The Interacoustic Model AD229<br>Diagnostic Audiometer is indicated<br>for use in conducting diagnostic<br>hearing evaluations and assisting<br>in the diagnosis of possible<br>otologic disorders.<br>Because of its master hearing aid<br>capability this device is also<br>indicated for simulating a hearing<br>aid during audiometric testing thus<br>it may help in the selection and<br>adjustment of a patient's hearing<br>aid". | Determine hearing thresholds and<br>assist to diagnose hearing loss. It<br>can also be used in the selection<br>and adjustment of a patient's<br>hearing aid. |
| Air<br>Conduction<br>Pure Tone -<br>Frequency<br>Range and<br>Format | Range:<br>125, 250, 500, 750, 1000,<br>1500, 2000, 3000, 4000,<br>6000, 8000 Hz<br>Format:<br>Steady,<br>Pulsed (2.5 pulses/sec),<br>Frequency Modulation<br>(Warble: ± 5 % triangular<br>10 Hz at 8 kHz, 8 Hz at 6<br>kHz and 5 Hz at 125 Hz - 4<br>kHz) | Range:<br>125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz<br>Format:<br>Steady,<br>Multiple Pulses (250-5000 msec.<br>on/off ),<br>Frequency Modulation (Warble: ±<br>5 % , 5Hz true sine wave) | Range:<br>125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz).<br>Format:<br>Steady,<br>Pulsed (Tone pulsed 200 msec ON,<br>200 msec OFF),<br>Frequency Modulation (Tone<br>modulated ± 5 % of centre<br>frequency at a rate of 5 Hz) |
| Bone<br>Conduction -<br>Frequency<br>Range | Bone conduction not<br>available | 250, 500, 750, 1000, 1500, 2000,<br>3000, 4000, 6000, 8000 Hz | 250, 500, 750, 1000, 1500, 2000,<br>3000, 4000, 6000, 8000 Hz |
| Narrow Band<br>Noise Range | Narrow Band Noise not<br>available | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz) |
| Speech Noise<br>Range | Speech Noise not available | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000 Hz | 125, 250, 500, 750, 1000, 1500,<br>2000, 3000, 4000, 6000, 8000,<br>12000 Hz<br>(High frequency as "Optional<br>accessories" 8000 Hz to 20 000<br>Hz) |
| Synchronous<br>Masking | Synchronous Masking not<br>available | Locks channel 2 attenuator to<br>channel 1 attenuator | Locks the noise attenuator to the<br>tone attenuator |
| Speech<br>Channel L and<br>R |…
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Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.