K Number
K112435
Device Name
RHYTHMLINK MONOPOLAR STIMULATING INSTRUMENT
Date Cleared
2011-09-22

(29 days)

Product Code
Regulation Number
874.1820
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP Authorized
Intended Use
Rhythmlink International Monopolar Stimulating Instrument is indicated for stimulation of cranial and peripheral motor nerves for location and identification during surgery, including spinal nerve roots. The Rhythmlink International Monopolar Stimulating Instrument is sterile and for single use only
Device Description
Monopolar Stimulating Instrument
More Information

Not Found

No
The summary describes a simple stimulating instrument and explicitly states "Not Found" for mentions of AI, DNN, or ML.

No
The device is used for locating and identifying nerves during surgery, which is a diagnostic or intraoperative guidance function, not a therapeutic one that treats a disease or condition.

Yes
Explanation: The device is indicated for "location and identification" of motor and spinal nerves during surgery, which is a diagnostic purpose.

No

The device description explicitly states "Monopolar Stimulating Instrument," which implies a physical hardware component used for stimulation. The intended use also describes a physical action ("stimulation of cranial and peripheral motor nerves"). There is no mention of software as the primary or sole component.

Based on the provided information, this device is not an IVD (In Vitro Diagnostic).

Here's why:

  • IVD Definition: In Vitro Diagnostics are medical devices used to perform tests on samples taken from the human body (like blood, urine, tissue) to provide information about a person's health.
  • Device Function: The description states the device is a "Monopolar Stimulating Instrument" used for "stimulation of cranial and peripheral motor nerves for location and identification during surgery". This is a direct interaction with the patient's body during a surgical procedure, not a test performed on a sample outside the body.
  • Lack of IVD Indicators: The description does not mention any of the typical characteristics of an IVD, such as:
    • Analyzing biological samples.
    • Providing diagnostic information based on sample analysis.
    • Reagents or test kits.

Therefore, the Rhythmlink International Monopolar Stimulating Instrument is a surgical instrument used for nerve stimulation, not an in vitro diagnostic device.

N/A

Intended Use / Indications for Use

Rhythmlink International Monopolar Stimulating Instrument is indicated for stimulation of cranial and peripheral motor nerves for location and identification during surgery, including spinal nerve roots. The Rhythmlink International Monopolar Stimulating Instrument is sterile and for single use only.

Product codes

ETN

Device Description

Not Found

Mentions image processing

Not Found

Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

Not Found

Anatomical Site

cranial and peripheral motor nerves, spinal nerve roots

Indicated Patient Age Range

Not Found

Intended User / Care Setting

Not Found

Description of the training set, sample size, data source, and annotation protocol

Not Found

Description of the test set, sample size, data source, and annotation protocol

Not Found

Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)

Not Found

Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)

Not Found

Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.

K072736

Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.

Not Found

Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).

Not Found

§ 874.1820 Surgical nerve stimulator/locator.

(a)
Identification. A surgical nerve stimulator/locator is a device that is intended to provide electrical stimulation to the body to locate and identify nerves and to test their excitability.(b)
Classification. Class II.

0

Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services (HHS). The logo consists of a stylized caduceus, which is a symbol of medicine, with three horizontal lines representing the branches of government. The logo is surrounded by the words "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" in a circular pattern.

Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD-20993-0002

Rhythmlink International, LLC. c/o Mr. James Mewborne Manager of Regulatory Affairs 1140 First Street South Columbia, SC 29209

SEP 2 2 2011

Re: K112435

Device Trade Name: Monopolar Stimulating Instrument Regulation Number: 21 CFR 874.1820 Regulation Name: Surgical Nerve Stimulator/Locator Regulatory Class: Class II Product Code: ETN Dated: August 22, 2011 Received: August 24, 2011

Dear Mr. Mewborne:

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.

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

1

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/CDRHQffices/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/Reportal?roblem/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/ResourcesforYou/Industry/default.htm.

Sincerely yours,

Earle. Clements

Malvina B. Eydelman, N Director Division of Ophthalmic, Neurological. and Ear, Nose and Throat Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

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Attachment 2 - Indications for Use Statement

Indications for Use Statement

510(k) Number K072736

Device Name Rhythmlink International Monopolar Stimulating Instrument

Indications for Use

Rhythmlink International Monopolar Stimulating Instrument is indicated for stimulation of cranial and peripheral motor nerves for location and identification during surgery, including spinal nerve roots. The Rhythmlink International Monopolar Stimulating Instrument is sterile and for single use only

Prescription Use X (Part 21 CFR 801 Subpart D) AND/OR

Over-The-Counter Use (21 CFR 807 Subpart C)

(Please do not write below this line - Continue on another page if needed)

Concurrence of CDRH, Office of Device Evaluation (ODE)

Prescription Use
X
(Per 21 CFR 801.109)

R. Mathe

(Division Sign-Off) Division of Ophthalmic, Neurological and Ear, Nose and Throat Devices

510(k) Number K112435

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