The Intronix Model 8008 Myoguide System (Myoguide) is a medical device intended as a stimulator for nerve localization as well as an aid for guidance of injections into the muscles.
Device Story
Myoguide is a battery-powered, handheld EMG amplifier and nerve stimulator. It records electrophysiological signals from muscle via needle electrodes and provides audio feedback and visual display (LCD) of EMG signals/RMS values. Operates in two modes: EMG (records signals) and Stimulation (delivers electrical pulses through the same needle). Clinicians use the device to locate muscle/nerve sites for accurate needle placement and drug injection. The device assists in monitoring needle insertion and injection efficacy. It features an automatic power-off function and is designed for continuous use in clinical settings.
Clinical Evidence
No clinical data. Substantial equivalence is supported by non-clinical bench testing, including software verification/validation, electrical safety, and electromagnetic compatibility (EMC) testing.
Technological Characteristics
Handheld, battery-powered (4AA) device with ABS plastic enclosure. Features 160x64 LCD display, EMG amplifier, and onboard stimulator (0-20 mA, square wave). Connectivity via proprietary input port for needle electrodes. Complies with IEC 60601-1, IEC 60601-1-2, and IEC 60601-2-40. Type BF applied part.
Indications for Use
Indicated for nerve localization and as an aid for guidance of needle electrode insertion and/or injection of neuromodulator drugs into human muscles. Intended for prescription use.
Regulatory Classification
Identification
An electrical peripheral nerve stimulator (neuromuscular blockade monitor) is a device used to apply an electrical current to a patient to test the level of pharmacological effect of anesthetic drugs and gases.
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DEC 3 0 2011
### Section 5 - 510(k) Summary
### For
### Myoguide System
### 1. Submission Sponsor
Intronix Technologies Corporation 26 McEwan Drive Suite 15 Bolton, Ontario L7E 1E6 CANADA Phone: (905) 951.3361 Fax: (905) 951.3192 Contact: Joe Wojewoda, Production and Quality Manager
### 2. Submission Correspondent
Emergo Group 611 West 5th Street, Third Floor Austin, TX 78701 Cell Phone: (508) 838.9139 Office Phone: (512) 327.9997 Fax: (512) 327.9998 Contact: Richard Vincins, Vice President, QA Email: richard@emergogroup.com
### 3. Date Prepared
·
June 20th 2011
### 4. Device Name
Trade/Proprietary Name: Myoguide System Common/Usual Name: Myoguide System Model 8008 Classification Name: Electrical Peripheral Nerve Stimulator Classification Regulation: 868.2775 Classification Panel: Anesthesiology Product Code: BXN, secondary GWL Device Class: II
### 5. Predicate Devices
Medtronic A/S – Clavis EMG Device K062478 Xavant Technology - STIMPOD NMS450 K102084
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### 6. Device Description
Myoguide is a battery powered, handheld, EMG amplifier with audio feedback, LCD EMG signal and device status display, and current stimulation ranging from 0 mA - 20 mA. This device is internally powered and rated for continuous use. The patient input connection is a type BF applied part. Myoguide will automatically power off after 30 minutes of inactivity to conserve battery life.
Myoguide is designed to amplify electrophysiological signals from muscle and provide audio feedback to assist clinicians in locating areas of muscle activity. The Stimulator can be used as an adjunct. Myoguide provides muscle and nerve localization information, to accurately guide and monitor needle electrode insertion, and/or injection of neuromodulator drugs, into a muscle in the human body. Any drug used will be that of the physician.
The large LCD display provides the complete system status at a glance. EMG audio, EMG signal display, EMG RMS Value, Integrated EMG signal strength and stimulation capability, increases efficacy for injection point localization. The simple control panel is intuitive and easy to operate.
Myoguide operates in two modes: "[EMG]" and "[Stimulation]". The default mode, "[EMG]", records electromyographic (EMG) signals from electrodes placed on the subject. The second mode, "[Stimulation]", enables Myoguide's onboard stimulator to stimulate through the needle electrode that was used to record the EMG. This enables the clinician to record and stimulate through the same needle electrode. The <Mode> switch is used to change the state of operation.
### 7. Intended Use
The Intronix Model 8008 Myoguide System (Myoguide) is a medical device intended as a stimulator for nerve localization as well as an aid for guidance of injections into the muscles.
### 8. Technological Characteristics and Substantial Equivalence
The following table compares the Myoguide System to the STIMPOD NMS450 and Clavis EMG predicate devices with respect to intended use, technological characteristics and principles of operation, providing more detailed information regarding the basis for the determination of substantial equivalence.
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### Comparison Table
| Comparison Table | | | | |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Manufacturer | Intronix Technologies<br>Corporation | Xavant Technology | Medtronic A/S | Myoguide System<br>Comparison to Predicate |
| Trade Name | Myoguide System | STIMPOD NM\$450 | Clavis EMG Device | NA |
| 510(k) Number | K111985 | K102084 | K062478 | |
| Product Code | BXN, GWL | BXN | BXN, GWL | Same |
| Regulation<br>Number | 868.2775 | 868.2775 | 890.1375 | The product code lists<br>868.2775 as the regulation<br>number. The Intronix<br>Myoguide System has the<br>same intended use as the<br>predicate device, the<br>Medtronic Clavis EMG<br>device. |
| Regulation<br>Name | Electrical peripheral nerve<br>stimulator | Electrical peripheral nerve<br>stimulator | Diagnostic electromyograph | See note above for the<br>regulation number |
| Indications for<br>use: | The Intronix Model 8008<br>Myoguide System (Myoguide)<br>is a medical device intended<br>as a stimulator for nerve<br>localization as well as an aid<br>for guidance of injections into<br>the muscles. | This product is a nerve<br>stimulation device designed<br>to be used by an anesthetist<br>during<br>1. General Anaesthesia, for<br>the purpose of establishing<br>the efficacy of a<br>Neuromuscular<br>Blocking Agent using non-<br>invasive surface electrodes<br>(not supplied)<br>2. Regional Anaesthesia for<br>the purpose of<br>a. nerve mapping using the<br>non-invasive Nerve Mapping | CLAVIS is a medical device<br>intended as a stimulator for<br>nerve localization as<br>well as an aid for guidance of<br>injections into the muscle. | Same |
| Manufacturer | Intronix Technologies<br>Corporation | Xavant Technology | Medtronic A/S | Myoguide System<br>Comparison to Predicate |
| Trade Name | Myoguide System | STIMPOD NMS450 | Clavis EMG Device | |
| Overall Design | Myoguide is a ABS plastic<br>enclosure, battery powered,<br>handheld, EMG amplifier with<br>audio feedback, LCD EMG<br>signal and device status<br>display; Myoguide operates in<br>two modes: EMG and<br>Stimulation | b. nerve locating using<br>invasive electrodes/needles<br>(not supplied).<br>The STIMPOD NMS450 is a<br>ABS plastic enclosure, battery<br>powered, handheld, EMG<br>amplifier with audio feedback,<br>LCD EMG signal and device<br>status display; STIMPOD<br>NMS450 operates in four<br>stimulation modes | Clavis EMG is a ABS plastic<br>enclosure, battery powered,<br>handheld, EMG amplifier with<br>audio feedback, and LCD EMG<br>signal; Clavis EMG operates in<br>two modes: EMG and<br>Stimulation | The three instruments are<br>identical in technology<br>aspects except the<br>Myoguide and STIMPOD<br>have an LCD display where<br>the Clavis does not; this is<br>not a significant difference<br>as the Myoguide and<br>STIMPOD displays the<br>system status, stimulation<br>settings, and EMG signal<br>and utilizes audio indicators<br>where the Clavis device only<br>utilizes indicators lights and<br>audio indicators |
| LCD Display | Yes; 160x64 resolution with or<br>without backlight | Yes; with or without backlight | None | The Myoguide has an LCD<br>display for complete device<br>status and displays the EMG<br>signal same as the<br>STIMPOD; this is not a<br>significant difference as the<br>Myoguide displays the EMG<br>signal and utilizes audio<br>indicators where the Clavis<br>device only utilizes<br>indicators lights and audio<br>indicators |
| Manufacturer | Intronix Technologies<br>Corporation | Xavant Technology | Medtronic A/S | Myoguide System<br>Comparison to Predicate |
| Trade Name | Myoguide System | STIMPOD NMS450 | Clavis EMG Device | Same |
| Mode of Operation | Continuous operation | Continuous operation | Continuous operation | Same |
| Stimulation Wave | Square | Square | Square | Same |
| Stimulation<br>Pulse Rate | 1 Hz, 3 Hz, 5 Hz, 7 Hz, or 10 Hz | 1 Hz, 2 Hz, 5 Hz, 50 Hz, or 100 Hz | 1 Hz or 2 Hz | Same |
| Stimulation<br>Pulse Width | 50, 100, 200 or 500 μs | 0.05, 0.1, 0.3, 0.5 or 1.0 ms | 0.1 ms or 0.2 ms | Same |
| Stimulation<br>Level | 0 mA to 20 mA, steps by 1.0 mA | 0 mA to 80 mA, steps by 0.2 mA | 0 mA to 15 mA, steps by 1.0 mA | Same |
| Electrode<br>Impedance | 200Ω to 10kΩ | 2000Ω to 0kΩ | 200Ω to 7kΩ | Same |
| Complies with<br>IEC 60601-1 | Yes | Yes | Yes | Same |
| Complies with<br>IEC 60601-1-2 | Yes | Yes | Yes | Same |
| Complies with<br>IEC 60601-2-40 | Yes | Yes | Yes | Same |
| Power Supply | Internally powered, 4AA<br>alkaline or rechargeable<br>batteries | Internally powered, 4AA<br>alkaline or rechargeable<br>batteries | Internally powered, 9V<br>alkaline or rechargeable<br>battery | Same |
| Weight | 225g (8 oz) | 130g (4.6 oz) | 185 g (6.5 oz) | Same |
| Dimensions<br>(LxWxH) | 150 x 100 x 54 mm (5.9" x<br>4.0" x 2.1") | 145 x 90 x 30 mm (5.7" x 3.5"<br>x 1.2") | 140 x 80 x 20 mm | Same |
| Operating<br>Conditions | +10°C to +40°C (+50°F to<br>+104°F)<br>30 – 75% rH | +10°C to +40°C (+50°F to<br>+104°F)<br>30 – 75% rH | +10°C to +40°C (+50°F to<br>+104°F)<br>30 – 75% rH | Same |
| Input Cable | Three input (anode, anode,<br>needle) with proprietary<br>instrument connection port | Three input (anode, anode,<br>needle) with proprietary<br>instrument connection port | Three input (anode, anode,<br>needle) with proprietary<br>instrument connection port | Same |
| Manufacturer | ntronix Technologies<br>Corporation | Xavant Technology | Medtronic A/S | Myoguide System |
| Trade Name | Myoguide System | STIMPOD NMS4 | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<br>Clavis EMG Device | Comparison to Predicat |
| nput Cable<br>------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | Single input adapter for<br>------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | Not available | Not available | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<br>N/A |
| Adapter | standard touch-prooi | | | |
| | connectio | | | |
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### 9. Non-Clinical Testing
The device's hardware and software development, verification, and validation have been carried out in accordance with FDA guidelines. The software was tested against the established Software Design Specifications for each of the test plans to assure the device performs as intended. The Device Hazard analysis was completed and risk control implemented to reduce any identified hazards. The testing results supports that all the hardware specifications and software specifications have met the acceptance criteria for the device. The Myoguide System passed all testing and supports the claims of substantial equivalence and safe operation.
The Myoguide System complies with the applicable voluntary standards for Electromagnetic Compatibility and Safety. The device passed all the electrical and safety testing according to national and international standards.
### 10. Clinical Testing
There was no clinical testing required to support the medical device as the indications for use is equivalent to the predicate device. The substantial equivalence of the device is supported by the non-clinical testing. The verification and validation testing of the device software and electrical safety and EMC testing of the device was found to acceptable and supports the claims of substantial equivalence.
### 11. Conclusion
By definition, a device is substantially equivalent to a predicate device when the device has the same intended use and the same technological characteristics as the previously cleared predicate device. Or the device has the same intended use and different technological characteristics that can be demonstrated that the device is substantially equivalent to the predicate devices, and that the new device does not raise different questions regarding its safety and effectiveness as compared to the predicate devices.
It has been shown in this 510(k) submission that the difference between the Myoguide System and the predicate devices does not raise any questions regarding its safety and effectiveness. The Myoguide System, as designed and manufactured, is determined to be substantially equivalent to the referenced predicate devices.
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Image /page/7/Picture/1 description: The image shows the seal of the Department of Health & Human Services - USA. The seal is circular and contains the department's emblem in the center. The emblem is a stylized representation of a human figure embracing a globe. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged around the emblem in a circular fashion.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
Intronix Technologies Corporation C/O Mr. Richard Vincins, Vice President, Quality Affairs Emergo Group 611 West 5th Street Austin, Texas 78701
Re: K111985
Trade/Device Name: Myoguide System Model 8008 Regulation Number: 21 CFR 868.2775 Regulation Name: Electrical Peripheral Nerve Stimulator Regulatory Class: II Product Code: BXN Dated: December 9, 2011 Received: December 13, 2011
Dear Mr. Vincins:
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.
DEC 3 0 2011
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Page 2 - Mr. Vincins
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 (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 go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices /ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. 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 Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours,
Wh for
Anthony D. Watson, B.S., M.S., M.B.A. Director Division of Anesthesiology, General Hospital, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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### Section 4 - Indications for Use Statement
510(k) Number (if known): Not Assigned
Device Name: Myoguide System
Indications for Use:
The Intronix Model 8008 Myoguide System (Myoguide) is a medical device intended as a stimulator for nerve localization as well as an aid for guidance of injections into the muscles.
Prescription Use _____________________(Part 21 CFR 801 Subpart D) AND/OR Over-The-Counter Use _____________________________________ (21 CFR 801 Subpart C)
(Please DO NOT WRITE BELOW THIS LINE – CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Wh
(Division Sign-Ott) Division of Anesthesiology, General Hospital Infection Control, Dental Devices
510(k) Number: K111985
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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.