The product is used for intraoperative monitoring and testing during surgical procedures to examine neuronal tissue (central and peripheral nervous system) by recording and stimulation. The product can be used during surgical procedures that justify non-therapeutic clinical use of the following modalities or their combinations: Measurement: Auditory evoked potentials (AEP), Electroencephalography (EEG), Electrocorticography (ECoG), Electromyography (EMG), Somatosensory evoked potentials (SSEP), Motor evoked potentials (MEP), Train of Four (TOF). Stimulation: Transcranial electrical stimulation (TES), Direct cortical and subcortical stimulation (DCS), Direct nerve stimulation (DNS), Transcutaneous intraoperative nerve stimulation (TINS), Direct muscle stimulation (DMS).
Device Story
Multimodal intraoperative neuromonitoring (IOM) system; comprises custom stimulation/recording hardware (ISIS Headboxes, ISIS Neurostimulator) and PC running NeuroExplorer software. Inputs: physiological signals from peripheral nerves, muscles, and central nervous system via electrodes. Operation: system records evoked potentials (AEP, SSEP, MEP), EEG, ECoG, EMG, and TOF; delivers electrical stimulation (TES, DCS, DNS, TINS, DMS) for monitoring. Used in OR by neurophysiologists, neurosurgeons, neurologists, or medical technical assistants. Output: real-time display and storage of electrophysiological data. Healthcare providers use output to assess neuronal integrity during surgery, potentially preventing neurological injury. System supports continuous operation; integrates with device carriers.
Clinical Evidence
No clinical data. Performance established via bench testing, software verification/validation, electrical safety (IEC 60601-1, IEC 80601-2-26, IEC 60601-2-40), and electromagnetic compatibility (IEC 60601-1-2) testing.
Technological Characteristics
Class I protection, Type BF patient leads. Computer-based system with 64-channel amplifier capacity. 16-bit A/D resolution; 20 kHz sampling frequency. Hardware filters: 0.5-120 Hz (high-pass), 2500/5000 Hz (low-pass). Constant current stimulators (HC and DNS modules) with 12 outputs (HC) or 1 output (DNS). Connectivity: PC-based. Software: NeuroExplorer 8. Sterilization: N/A (device components).
Indications for Use
Indicated for intraoperative monitoring and testing of neuronal tissue (central and peripheral nervous system) in patients undergoing surgical procedures requiring neurophysiological recording and stimulation.
Regulatory Classification
Identification
An evoked response electrical stimulator is a device used to apply an electrical stimulus to a patient by means of skin electrodes for the purpose of measuring the evoked response.
Predicate Devices
ISIS Headbox 5042XX and ISIS Neurostimulator (K212166)
Submission Summary (Full Text)
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October 27, 2023
Image /page/0/Picture/1 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health and Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the blue square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.
inomed Medizintechnik GmbH Shuofei Cheng, Ph.D. Regulatory Affairs Im Hausgruen 29 Emmendingen, Baden-Wuerttemberg 79312 Germany
#### Re: K233292
Trade/Device Name: ISIS Headboxes, ISIS Neurostimulator, ISIS Xpert Plus, ISIS Xpert, ISIS Xpress Regulation Number: 21 CFR 882.1870 Regulation Name: Evoked response electrical stimulator Regulatory Class: Class II Product Code: GWF, GWJ, GWQ, ETN, IKN Dated: September 29, 2023 Received: September 29, 2023
#### Dear Shuofei Cheng:
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 (the 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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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.
Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
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Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30, Design controls; 21 CFR 820.90, Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review. the OS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
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); medical device reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Patrick Antkowiak -S
for Jay Gupta Assistant Director DHT5A: Division of Neurosurgical, Neurointerventional and Neurodiagnostic Devices OHT5: Office of Neurological
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and Physical Medicine Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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#### Indications for Use
510(k) Number (if known) K233292
#### Device Name
ISIS Headbox and ISIS Neurostimulator (ISIS IOM Systems: ISIS Xpert®, ISIS Xpert®Plus, ISIS Xpress)
#### Indications for Use (Describe)
The product is used for intraoperative monitoring and testing during surgical procedures
· to examine neuronal tissue (central and peripheral nervous system) by recording and stimulation
The product can be used during surgical procedures that justify non-therapeutic clinical use of the following modalities or their combinations:
- · Measurement:
- o Auditory evoked potentials (AEP)
- o Electroencephalography (EEG)
- o Electrocorticography (ECoG)
- o Electromyography (EMG)
- o Somatosensory evoked potentials (SSEP)
- o Motor evoked potentials (MEP)
- o Train of Four (TOF)
- · Stimulation:
- o Transcranial electrical stimulation (TES)
- o Direct cortical and subcortical stimulation (DCS)
- o Direct nerve stimulation (DNS)
- o Transcutaneous intraoperative nerve stimulation (TINS)
- o Direct muscle stimulation (DMS)
Type of Use (Select one or both, as applicable)
X Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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Page 1 of 15 Stand 1.1 vom 2017-11-02
# ISIS Headboxes and ISIS Neurostimulator
# 510(k) Summary
| Submission<br>Date: | 29 September 2023 | | | | |
|------------------------------------------------|---------------------------------------------------------------------------------------------------------------|---------------------|--------|------------------------------------------------------------------------------------|--------------|
| 510(k) Holder: | inomed Medizintechnik GmbH<br>Im Hausgrün 29<br>79312 Emmendingen, Germany | | | | |
| Submitter and<br>Application<br>Correspondent: | Tomasz Moszkowski, Ph.D.<br>Phone: +49 7641 6414 583<br>Email: t.moszkowski@inomed.com | | | | |
| Manufacturing<br>Site: | inomed Medizintechnik GmbH<br>Im Hausgrün 29<br>79312 Emmendingen, Germany | | | | |
| Trade Name: | ISIS Headbox 5042XX and ISIS Neurostimulator<br>(ISIS IOM Systems: ISIS Xpert®, ISIS Xpert®Plus, ISIS Xpress) | | | | |
| Common and<br>Classification<br>Name: | Evoked response stimulator and intraoperative monitor | | | | |
| Classification<br>Regulation: | 21 CFR §882.1870 | | | | |
| Product Code: | GWF | | | | |
| Subsequent<br>Product Codes: | GWJ, GWQ, ETN, IKN | | | | |
| Regulation<br>Medical<br>Specialty: | Neurology | | | | |
| Substantially<br>Equivalent<br>Devices: | | Predicate<br>Number | 510(k) | Predicate<br>Model | Manufacturer |
| | Predicate Device: | K212166 | | inomed medizintechnik<br>GmbH / ISIS Headbox<br>5042XX and ISIS<br>Neurostimulator | |
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Image /page/5/Picture/0 description: The image shows the word "inomed" in a bold, sans-serif font. To the right of the word is a black square with a white "i" inside, with a circular arrow above it. Below the word "inomed" is the website address "www.inomed.com".
ISIS Headboxes and ISIS Neurostimulator
(ISIS IOM Systems: ISIS Xpert®, ISIS Xpert®Plus, ISIS Xpress)
Device The ISIS Headboxes and the ISIS Neurostimulator constitute Description: multimodal intraoperative neuromonitoring systems called ISIS IOM Systems. These systems consist of custom stimulation and recording hardware, a standard laptop or desktop personal computer running an off-the-shelf operating system, and operating software called NeuroExplorer. As an option, these systems mount on device carriers or housings tailored for intraoperative use.
The ISIS IOM Systems support the following measurement modalities:
- -Auditory Evoked Potentials
- -Transcranial and cortical Motor Evoked Potentials
- Somatosensory Evoked Potentials -
- Free-running and triggered Electromyography -
- Electroencephalography -
- Train of Four -
Intended Use The product is used for intraoperative monitoring and testing during and Indications surqical procedures:
- for Use:
- to examine neuronal tissue (central and peripheral nervous system) by recording and stimulation
The product can be used during surgical procedures that justify nontherapeutic clinical use of the following modalities or their combinations:
- . Measurement:
- Auditory evoked potentials (AEP) o
- Electroencephalography (EEG) O
- Electrocorticography (ECoG) O
- Electromyography (EMG) O
- Somatosensory evoked potentials (SSEP) O
- Motor evoked potentials (MEP) O
- Train of Four (TOF) O
- Stimulation:
- Transcranial electrical stimulation (TES) o
- Direct cortical and subcortical stimulation (DCS) O
- Direct nerve stimulation (DNS) O
- Transcutaneous intraoperative nerve stimulation O (TINS)
- Direct muscle stimulation (DMS) O
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Image /page/6/Picture/0 description: The image shows the logo for Inomed. The logo consists of the word "inomed" in a bold, sans-serif font, followed by a square containing a stylized "i" with circular arrows around it. Below the logo is the website address "www.inomed.com".
FM 3-1
ISIS Headboxes and ISIS Neurostimulator Page 3 of 15 Stand 1.1 vom 2017-11-02
#### Comparison of Intended Use and Indications for Use:
The ISIS Headboxes and ISIS Neurostimulator including accessories as part of ISIS IOM Systems (ISIS Xpert®Plus, ISIS Xpert®, ISIS Xpress) are equal in terms of intended use and indications for use to the predicate device compared to the predicate device. The subject device employs the same technological characteristics as the predicate device.
| | Subject devices | Predicate device | Claimed Equivalence |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| System | ISIS Headbox 5042XX<br>and ISIS<br>Neurostimulator<br>with NeuroExplorer 8 | ISIS Headbox 5042XX<br>and ISIS<br>Neurostimulator<br>with NeuroExplorer 7 | |
| Manufacturer | inomed Medizintechnik<br>GmbH | inomed Medizintechnik<br>GmbH | |
| Picture | Image: Subject devices | Image: Predicate device | |
| 510(k)<br>Number | K233292 | K212166 | |
| Device Class | II | II | Equal |
| Product<br>Code | GWF | GWF | Equal |
| Subsequent<br>Product<br>Codes | GWJ, GWQ, ETN, IKN | GWJ, GWQ, ETN, IKN | GWJ - Equal<br>GWQ - Equal<br>ETN - Equal<br>IKN – Equal |
| Main function, site of usage, intended user group | | | |
| Main<br>function | "The product is used for<br>intraoperative<br>monitoring and testing<br>during surgical<br>procedures<br>to examine neuronal<br>tissue (central and<br>peripheral nervous<br>system) by recording<br>and stimulation" | ISIS Headboxes 5042XX:<br>"The products are<br>intended for use in the<br>operating room to<br>measure and display the<br>electrical signals<br>generated by muscle,<br>peripheral nerves and<br>the central nervous<br>system." | Equal<br>Both the predicate and subject<br>devices can acquire, display<br>and store physiologic data<br>from peripheral nerves,<br>muscles, and the central<br>nervous system. The<br>statements use different<br>wording, but do not differ in<br>terms of the clinical aspects. |
| Site of usage | "The product is used for<br>intraoperative monitoring<br>and testing during<br>surgical procedures.<br>(…)” | ISIS Headboxes 5042XX:<br>"The products are<br>intended for | Equal<br>The predicate and the subject<br>device are intended for use<br>during surgical procedures. |
| | | | |
| | "The product can be<br>used during surgical<br>procedures (...)" | intraoperative<br>neuromonitoring"<br>"The products are<br>intended for use in the<br>operating room (...)" | |
| Intended<br>user group | Neurophysiologists<br>(clinical<br>neurophysiologists,<br>neurosurgeons,<br>neurologists or medical<br>technical assistants for<br>functional diagnostics) | Neurophysiologists<br>(clinical<br>neurophysiologists,<br>neurosurgeons,<br>neurologists or medical<br>technical assistants for<br>functional diagnostics) | Equal |
| Intended use | The product is used for<br>intraoperative monitoring<br>and testing during<br>surgical procedures<br>- to examine<br>neuronal tissue<br>(central and<br>peripheral nervous<br>system) by<br>recording and<br>stimulation | ISIS Headbox 5042XX:<br>"The products are<br>intended for<br>intraoperative<br>neuromonitoring; for the<br>recording of<br>electrophysiological<br>signals and stimulating<br>of nerve and muscle<br>tissues. (...)"<br><br>ISIS Neurostimulator<br>504180:<br>"The ISIS<br>Neurostimulator is<br>intended for the<br>provision of<br>neurophysiological<br>stimulation when used in<br>surgical procedures and<br>for diagnostics. (...)" | Equal<br>Both the subject and predicate<br>device are intended for the<br>recording of<br>electrophysiological signals<br>and stimulation of neuronal<br>tissue during intraoperative<br>neuromonitoring. |
| Indications<br>for use | "The product can be<br>used during surgical<br>procedures that justify<br>non-therapeutic clinical<br>use of the following<br>modalities or their<br>combinations:<br>- Measurement:<br>Auditory evoked<br>potentials (AEP)<br>(...)<br>- Stimulation:<br>Transcranial<br>electrical<br>stimulation (TES)<br>- Direct cortical and<br>subcortical<br>stimulation (DCS)<br>- Direct nerve<br>stimulation (DNS)<br>- Transcutaneous<br>intraoperative<br>nerve stimulation<br>(TINS)<br>- Direct muscle<br>stimulation (DMS)" | ISIS Headbox 5042XX:<br>"The products support<br>the clinical application of<br>(...) Auditory Evoked<br>Potentials (AEP) (...)"<br><br>ISIS Neurostimulator<br>504180:<br>The ISIS<br>Neurostimulator is<br>intended for the<br>provision of<br>neurophysiological<br>stimulation (...). It is<br>suitable for continuous<br>operation and can be<br>used in the following<br>fields:<br>- Transcranial<br>electrical<br>stimulation (TES)<br>- Direct cortical<br>stimulation (DCS)<br>- Direct nerve<br>stimulation (DNS) | Equal<br>AEP: Equal<br>TES: Equal<br>DCS: Equal<br>DNS: Equal<br>TINS and TNS: Equal, the<br>statement was reformulated<br>from transcutaneous electrical<br>nerve stimulation to<br>transcutaneous intraoperative<br>nerve stimulation to highlight<br>the non-therapeutic aspect.<br>DMS: Equal<br>Both the subject and predicate<br>device are indicated for use<br>during surgical procedures<br>that justify the use of<br>aforementioned monitoring<br>modalities. |
| | - Transcutaneous electrical nerve stimulation (TNS)<br>- Direct muscle stimulation (DMS) | | |
| "The product can be used during surgical procedures that justify non-therapeutic clinical use of the following modalities (...)<br>• Measurement:<br>(...)<br>Electroencephalography (EEG)" | ISIS Headbox 5042XX:<br>"The products support the clinical application of Electroencephalography (EEG)" | Equal<br>Both the subject and predicate devices are intended for electroencephalography (EEG). | |
| "The product can be used during surgical procedures that justify non-therapeutic clinical use of the following modalities (...)<br>• Measurement:<br>(...) Electromyography (EMG)." | ISIS Headbox 5042XX:<br>"The products support the clinical application of (...) Electromyography (EMG)." | Equal<br>Both the subject and predicate devices are intended for electromyography (EMG). | |
| "The product can be used during surgical procedures that justify non-therapeutic clinical use of the following modalities or their combinations:<br>• Measurement:<br>(...) Motor Evoked Potentials (MEP). (...)<br>• Stimulation:<br>(...) transcranial electrical stimulation (TES)." | ISIS Headbox 5042XX:<br>"The products support the clinical application of (...) Motor Evoked Potentials (MEP)."<br>ISIS Neurostimulator 504180:<br>"It is suitable for continuous operation and can be used in the following fields: (...) transcranial electrical stimulation (TES)." | Equal<br>Both devices can deliver transcranial stimulation via dedicated outputs. The ISIS Headbox is capable of recording MEP signals during transcranial electrical stimulation provided by the ISIS Neurostimulator. | |
| "The product can be used during surgical procedures that justify non-therapeutic clinical use of the following modalities (...)<br>• Stimulation:<br>(...) direct cortical stimulation (DCS)." | ISIS Neurostimulator 504180:<br>"It is suitable for continuous operation and can be used in the following fields: (...) direct cortical stimulation (DCS)." | Equal<br>Both devices can deliver electrical current for direct cortical stimulation. | |
| "The product can be used during surgical procedures that justify non-therapeutic clinical use of the following modalities or their combinations: | ISIS Headbox 5042XX:<br>"The products support the clinical application of (...) Electromyography (EMG)."<br>ISIS Neurostimulator 504180: | Equal<br>Both devices can measure triggered EMG signals. The subject devices achieve this by combining the EMG measurement using the ISIS Headboxes and direct nerve | |
| | | | |
| Measurement:<br>• (...) Electromyography<br>(EMG)."<br>Stimulation:<br>• (...) direct nerve<br>stimulation (DNS)." | "It is suitable for<br>continuous operation<br>and can be used in the<br>following fields: (...)<br>direct nerve stimulation<br>(DNS)." | stimulation (DNS) using the<br>ISIS Neurostimulator. | |
| "The product can be<br>used during surgical<br>procedures that justify<br>non-therapeutic clinical<br>use of the following<br>modalities or their<br>combinations:<br>combinations:<br>Measurement:<br>• (...) Train of Four (TOF)<br>Stimulation:<br>• (...) Transcutaneous<br>intraoperative nerve<br>stimulation (TINS)." | ISIS Headboxes<br>5042XX:<br>"The products support<br>the clinical application<br>of (...)<br>Electromyography<br>(EMG)."<br>ISIS Neurostimulator<br>504180:<br>"The ISIS<br>Neurostimulator is<br>intended for the<br>provision of<br>neurophysiological<br>stimulation (...) in the<br>following fields: (...)<br>transcutaneous<br>electrical nerve<br>stimulation (TNS)." | Equal<br>Both products can be used for<br>performing twitch tests to<br>measure the level of muscle<br>relaxation due to muscular<br>blockers. This measurement<br>is performed by employing a<br>simultaneous transcutaneous<br>electrical nerve stimulation<br>and EMG measurement. | |
| "The products are not<br>intended for monitoring<br>life-sustaining functions." | ISIS Headbox 5042XX:<br>"The products are not<br>intended for monitoring<br>life-sustaining<br>functions." | Equal<br>Both products are not<br>intended for monitoring of life-<br>sustaining function. | |
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Image /page/7/Picture/0 description: The image shows the word "inomed" in black font, followed by a black square with a white "i" inside. There are curved lines around the "i" in the square. The font of the word "inomed" is sans-serif.
www.inomed.com
## 510(k) Summary
ISIS Headboxes and ISIS Neurostimulator
FM 3-1
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www.inomed.com
## 510(k) Summary
ISIS Headboxes and ISIS Neurostimulator
FM 3-1
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FM 3-1
ISIS Headboxes and ISIS Neurostimulator
Stand 1.1 vom 2017-11-02
The ISIS Headboxes and ISIS Neurostimulator including accessories Technology Comparison: as part of ISIS IOM Systems (ISIS Xpert®Plus, ISIS Xpert®, ISIS Xpress) exhibit technological characteristics equivalent to those of the predicate device.
| | Subject device | Predicate device |
|----------------------------------------------|-------------------------------------------------------------------------|-------------------------------------------------------------------------|
| System | ISIS Headbox 5042XX and ISIS<br>Neurostimulator<br>With NeuroExplorer 8 | ISIS Headbox 5042XX and ISIS<br>Neurostimulator<br>With NeuroExplorer 7 |
| Manufacturer | inomed Medizintechnik GmbH | inomed Medizintechnik GmbH |
| Technical aspects | | |
| Protection<br>against<br>electrical<br>shock | Class I protection | Class I protection |
| Protection<br>against | Device type BF (Body Floating) | Device type BF (Body Floating) |
001_510(k) Summary-2023-10-26.docx
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ISIS Headboxes and ISIS Neurostimulator
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#### Page 7 of 15
| electrical<br>shock of<br>patient leads | | | | |
|----------------------------------------------|---------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------|----------------------------|
| System<br>configuration | Computer-based equipment with dedicated hardware and software components | Computer-based equipment with dedicated hardware and software components | | |
| Signal recording | | | | |
| Measurement<br>principle | Amplifiers based on differential (bipolar) and referential (unipolar) type of recording | Amplifiers based on differential (bipolar) and referential (unipolar) type of recording | | |
| Amplifier<br>components | Desired combination of ISIS Headboxes with a total of 64 channels | Desired combination of ISIS Headboxes with a total of 64 channels | | |
| | Up to 64: | Up to 64: | | |
| | Module | Channels | Module | Channels |
| | ISIS Headbox 16<br>Ch. REF (504261) | Unipolar: 16<br>Bipolar: 0 | ISIS Headbox 16<br>Ch. REF (504261) | Unipolar: 16<br>Bipolar: 0 |
| Number of<br>amplifier<br>channels | ISIS Headbox 16<br>Ch. DIF (504271) | Unipolar: 0<br>Bipolar: 16 | ISIS Headbox 16<br>Ch. DIF (504271) | Unipolar: 0<br>Bipolar: 16 |
| | ISIS Headbox 16<br>Ch. REF - AEP<br>(504281) | Unipolar: 16<br>Bipolar: 0 | ISIS Headbox 16<br>Ch. REF - AEP<br>(504281) | Unipolar: 16<br>Bipolar: 0 |
| | ISIS Headbox 8<br>Ch. DIF - 8 Ch.<br>REF - AEP<br>(504285) | Unipolar: 8<br>Bipolar: 8 | ISIS Headbox 8<br>Ch. DIF - 8 Ch.<br>REF - AEP<br>(504285) | Unipolar: 8<br>Bipolar: 8 |
| A/D<br>resolution | 16-bit | | 16-bit | |
| | Hardware high-pass filter: | | Hardware high-pass filter: | |
| Hardware<br>bandpass | 0.5-120 Hz on all modules | | 0.5-120 Hz on all modules | |
| | Hardware low-pass filter: | | Hardware low-pass filter: | |
| | 2500, 5000 Hz on all modules | | 2500, 5000 Hz on all modules | |
| Sampling<br>frequency | 20 kHz | | 20 kHz | |
| Notch filter | 50, 60 Hz | | 50, 60 Hz | |
| Common-<br>mode<br>rejection ratio<br>(CMRR) | > 100 dB<br>Conformant with IEC 80601-2-26:2019, clause 201.12.1.106 Common mode rejection. | | > 100 dB<br>Conformant with IEC 80601-2-26:2019, clause 201.12.1.106 Common mode rejection. | |
| Amplifier<br>noise | Conformant with IEC 80601-2-26:2019, clause 201.12.1.104 Input noise | | Conformant with IEC 80601-2-26:2019, clause 201.12.1.104 Input noise | |
| | Stimulation | | | |
| TCMEP<br>stimulation | Realized by High Current Stimulator (HC) in transcranial stimulation mode | | Realized by High Current Stimulator (HC) in transcranial stimulation mode | |
| Stimulator<br>type | Current controlled | | Current controlled | |
| No. of<br>outputs | 12 | | 12 | |
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Image /page/11/Picture/0 description: The image shows the word "inomed" in black font, followed by a black square with a white "i" inside. There are curved lines around the "i" in the square. The font of the word "inomed" is sans-serif.
www.inomed.com
## 510(k) Summary
FM 3-1
| Stimulation intensity (I) and pulse width (PW) | Current controlled: up to 250 mA (voltage limit of 410 V)<br>Voltage controlled: n/a | Current controlled: up to 250 mA (voltage limit of 410 V)<br>Voltage controlled: n/a |
|------------------------------------------------------------------|--------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------|
| Intensity step | 0.05 – 2 ms<br>Constant current: 0.1 mA<br>Constant voltage: n/a | 0.05 – 2 ms<br>Constant current: 0.1 mA<br>Constant voltage: n/a |
| No. of stimulus pulses | 1-9 | 1-9 |
| Stimulation frequency (f) range | Image: Stimulation frequency (f) range<br>Up to 500 Hz | Image: Stimulation frequency (f) range<br>Up to 500 Hz |
| Limitation of stimulation frequency | 1/10 pulse width to stimulation period ratio | 1/10 pulse width to stimulation period ratio |
| Limitation of inter-stimulus interval | Image: Limitation of inter-stimulus interval<br>Limited to ½ pulse width to ISI | Image: Limitation of inter-stimulus interval<br>Limited to ½ pulse width to ISI |
| Absolute minimum inter-stimulus interval | 0.1 ms | 0.1 ms |
| Maximum charge per phase | $189.66 \mu C$ | $189.66 \mu C$ |
| Maximum RMS stimulation intensity | 30 mA RMS | 30 mA RMS |
| Minimum electrode size | n/a | 0.39 cm² |
| Maximum current density | 90,8 mA/cm² | 76.92 mA/cm² |
| Maximum charge density | 61.5 µC/cm² | 61.5 µC/cm² |
| Maximum<br>power<br>density | 160 W/cm² | 160 W/cm² |
| Power<br>limitation | ≤50 mJ/pulse<br>Conformant to IEC 60601-2-40:2016,<br>clause 201.12.4.103. | ≤50 mJ/pulse<br>Conformant to IEC 60601-2-40:2016,<br>clause 201.12.4.103. |
| High-current<br>stimulator for<br>SEP and TOF | Realized by High Current Stimulator<br>(HC) in subcutaneous stimulation<br>(SEP, TOF) mode | Realized by High Current Stimulator<br>(HC) in subcutaneous stimulation<br>(SEP, TOF) mode |
| Stimulator<br>type | Constant current | Constant current |
| No. of<br>outputs | 12 | 12…
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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.