ELECTROSURGICAL INFLATABLE BASKET ELECTRODES by CONWAY STUART MEDICAL, INC.

The provided text describes an FDA 510(k) clearance letter for an electrosurgical device. It does not contain any information about acceptance criteria, device performance studies, sample sizes, ground truth establishment, or expert involvement.

Therefore, I cannot fulfill your request for that specific information based on the given text.

The document states that the device is "substantially equivalent" to legally marketed predicate devices, which is the basis for its clearance. Substantial equivalence generally means that the new device has the same intended use and the same technological characteristics as the predicate device, or if it has different technological characteristics, it does not raise different questions of safety and effectiveness, and the data submitted show that the device is as safe and effective as the predicate device. However, the details of how this substantial equivalence was demonstrated through specific studies or acceptance criteria are not present in this clearance letter.

Summary

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3 1998 DEC

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

Thomas Wehman, Ph.D. Regulatory Affairs Conway Stuart Medical, Inc. 735 Palomar Avenue Sunnyvale, California 94086

Re: K983116

Trade Name: Electrosurgical Inflatable Basket Electrodes Regulatory Class: II Product Code: GEI Dated: August 17, 1998 Received: September 04, 1998

Dear Dr. Wehman:

We have reviewed your Section 510(k) notification of intent to market the device referenced above and we 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). 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 (Premarket Approval), 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 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.

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Page 2 - Dr. Thomas Wehman

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

If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4595. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification"(21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597, or at its internet address "http://www.fda.gov/cdrh/dsma/dsmamain.html".

Sincerely yours,

fo alep

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

Enclosure

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510(k) Number (if known): K983116

Device Name:	Conway Stuart Medical, Inc. ElectrosurgicalInflatable Basket Electrodes
Indications for Use:	Indicated for coagulation of tissueThese devices are intended for use by qualifiedmedical personnel trained in the use ofelectrosurgery.

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Concurrence of CDRH, Office of Device Evaluation (ODE)

Division Sign-Off
Division of General Restorative Devices
510(k) Number	K983116

Prescription Use(per 21 CFR 801.109)	OR	Over-the-Counter Use(Optional format 1-2-96)
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Regulation Number and Section

§ 878.4400 Electrosurgical cutting and coagulation device and accessories.

(a)
Identification. An electrosurgical cutting and coagulation device and accessories is a device intended to remove tissue and control bleeding by use of high-frequency electrical current.(b)
Classification. Class II.