MODIFICATION TO: WINNER ST-2 STIMULATOR

• K Number: K013770
• Device Name: MODIFICATION TO: WINNER ST-2 STIMULATOR
• Manufacturer: RICH-MAR CORP.
• Date Cleared: 2002-01-18 ( 66 days)
• Product Code: IPF , GZJ , LIH
• Regulation Number: 890.5850
• Type: Special
• Panel: Physical Medicine
• Reference & Predicate Devices: N/A
• Predicate For: N/A

Intended Use

Muscle stimulator indications for treatment using Quadpolar, Bipolar, Monophasic, and Russian waveforms:

• 1. Relaxation of muscle spasms.
• 2. Prevention or retardation of disuse atrophy.
• 3. Increasing local blood circulation.
• 4. Muscle re-education.
• 5. Maintaining or increasing range of motion.
• 6. Immediate post-surgical stimulation of calf muscles to prevent venous thrombosis.

Indications for treatment using Quadpolar Interferential and Microamperage Pulsed Current (Microcurrent) waveforms:

• 1. Symptomatic relief of chronic intractable pain.
• 2. Management of pain associated with post-traumatic or post operative conditions.

Device Description

Not Found

AI/ML Overview

I am sorry, but the provided text is a 510(k) clearance letter from the FDA for a medical device (Rich-Mar Winner ST-2, a muscle stimulator and TENS unit). It does not contain any information about acceptance criteria, device performance studies, sample sizes, ground truth establishment, or any of the other specific details you requested regarding a medical device study.

Therefore, I cannot extract the requested information from the given text. This document serves as regulatory clearance based on substantial equivalence to predicate devices, not a detailed report of a performance study.

Summary

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Image /page/0/Picture/1 description: The image shows the seal of the U.S. Department of Health and Human Services. The seal features a stylized caduceus, a symbol often associated with medicine and healthcare, consisting of a staff with two snakes coiled around it. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" are arranged in a circular pattern around the caduceus.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

JAN 1 8 2002

Mr. David Richards Vice President. Director of Regulatory Affairs Rich-Mar Corporation P.O. Box 879 Inola, Oklahoma 74036-0879

Re: K013770/S1

Trade/Device Name: Winner ST-2 Regulation Numbers: 21 CFR 890.5850 and 21 CFR 882.5890 Regulation Names: Powered Muscle Stimulator and Transcutaneous Electrical Nerve Stimulator for Pain Relief Regulatory Class: Class II Product Codes: IPF, GZJ and LIH Dated: December 13, 2001 Received: January 7, 2002

Dear Mr. Richards:

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.

If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such 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 comply with all the Act's requirements, including, but not limited to: registration

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Page 2 - Mr. David Richards

and listing (21 CFR Part 807); labeling (21 CFR Part 801); 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.

This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to legally marketed predicate devices results in a classification for your device and thus, permits your device to proceed to the market.

If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 21 CFR Part 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at [phone]. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at [phone]. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number [phone] or [phone] or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html

Sincerely vours.

Mark n Milkenson

Celia M. Witten, Ph.D., M.D. Director Division of General, Restorative, and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

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Page 1 of 1

510(k) Number (if known): K013770

Device Name: Rich-Mar Winner ST-2

Indications For Use:

Muscle stimulator indications for treatment using Quadpolar, Bipolar, Monophasic, and Russian waveforms:

• 1. Relaxation of muscle spasms.
• 2. Prevention or retardation of disuse atrophy.
• 3. Increasing local blood circulation.
• 4. Muscle re-education.
• 5. Maintaining or increasing range of motion.
• 6. Immediate post-surgical stimulation of calf muscles to prevent venous thrombosis.

Indications for treatment using Quadpolar Interferential and Microamperage Pulsed Current (Microcurrent) waveforms:

• 1. Symptomatic relief of chronic intractable pain.
• 2. Management of pain associated with post-traumatic or post operative conditions.

(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED

Concurrence of CDRH, Office of Device Evaluation (ODE)

Mark N Milkman

of General, Restorative and Neurological Devices

510(k) Number_

Regulation Number and Section

N/A