The use of the Kompressor compresion screw is generally indicated for the reduction and fixation of fractures of the small bones of the hand and wrist, such as the scaphoid. It is indicated for use in the fixation of fractures classified as acute or fresh, as well as cases of non-union where conservative treatment options have failed.

Use of the implant is contraindicated in those cases where complete avascular necrosis has rendered bone stock inadequate.

Device Description

The Kompressor bone screw implant is a two-piece fixation device intended for use in the reduction, stabilization, and internal fixation of bone fractures. The 2-piece design incorporates the use of a leading and trailing screw component. The implant utilizes a variance in thread pitch between the leading and trailing portions of the screw to reduce and fıx fracture fragments, and is available in a variety of sizes to accommodate various fracture types and sites.

Materials: Titanium; Ti-6A14V-ELI as per ASTN F136

Function: The system functions to draw bone fractures together, thereby facilitating fixation.

AI/ML Overview

The provided text describes a 510(k) premarket notification for a medical device called the "Kompressor Compression Screw System." This document focuses on demonstrating substantial equivalence to existing legally marketed predicate devices, rather than establishing de novo performance criteria through a clinical study with acceptance criteria.

Therefore, the requested information regarding acceptance criteria, device performance, sample sizes, expert involvement, and ground truth establishment for a study is not present in the provided text. The 510(k) pathway primarily relies on comparing the new device's technological characteristics, materials, and intended use to those of already approved devices.

Here's a breakdown of why the requested information cannot be provided based on the given text:

Acceptance Criteria and Reported Device Performance: This type of information is typically found in a clinical trial report or a performance study. The 510(k) document (K024233) aims to show that the Kompressor Compression Screw System is substantially equivalent to predicate devices (Milennium Medical Technologies Headless Bone Screw K020791 and Newdeal I.CO.S Ideal Compression Screw K993762), implying it performs similarly to devices already on the market. It does not outline specific, measurable performance criteria to be met and their achievement in a study.
Sample Size, Data Provenance, Number of Experts, Adjudication Method, MRMC Study, Standalone Study, Type of Ground Truth, Training Set Sample Size, and Training Set Ground Truth Establishment: These details are standard components of a detailed clinical or performance study. The provided text is a summary of safety and effectiveness within a 510(k) submission, which does not typically include the intricate design and results of such studies. The document mentions "Comparison of technological characteristics" and highlights that "There are no significant differences...which would adversely affect the use of the product." This comparative approach, rather than a de novo performance study, is the core of a 510(k).

In summary, the provided document (K024233) is a 510(k) premarket notification, which establishes substantial equivalence to predicate devices, not de novo performance through a study with explicit acceptance criteria.

Summary

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K024233

APPENDIX I SUMMARY OF SAFETY AND EFFECTIVENESS

For

Kompressor Compression Screw System

1. Submitter:

Contact Person:

FEB 0 6 2003

Kinetikos Medical, Inc. 6005 Hidden Valley Rd. Carlsbad, CA 92009

John G. Spampinato V.P., Quality Assurance Kinetikos Medical, Inc. 6005 Hidden Valley Road Carlsbad, CA 92009 (858) 558 2233 # 406 FAX (858) 558 0838

Date Prepared: December 19, 2002

2. Trade Name:	Kompressor Compression Screw System
Common Name:	Compression Screw
Classification Name:	Orthopedic

1. Predicate or legally marketed devices which are substantially equivalent
  -Milennium Medical Technologies Headless Bone Screw 510(k) K020791 -Newdeal I.CO.S Ideal Compression Screw 510(k) K993762

4. Description of Device

Materials: Titanium; Ti-6A14V-ELI as per ASTN F136

Function: The system functions to draw bone fractures together, thereby facilitating fixation.

5. Intended Use

Use of the implant is contraindicated in those cases where complete avascular necrosis has rendered bone stock inadequate.

Comparison of technological characteristics of the device to predicate and legally 6. marketed devices:

There are no significant differences between the Kompressor Compression Screw and other systems currently being marketed which would adversely affect the use of the product. The Kompressor compression screw employs the same basic mechanical features as the predicate, legally marketed devices specified in section I in that the essential configuration consists of a leading, self-tapping thread and a trailing thread, the varying ratios of which result in the desired compression of the fractured bone segments.

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DEPARTMENT OF HEALTH & HUMAN SERVICES

Image /page/1/Picture/1 description: The image is a black and white seal for the Department of Health & Human Services - USA. The seal features a stylized eagle with three lines representing its wings and head. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the eagle.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

FEB 0 6 2003

Kinetikos Medical, Inc. John G. Spampinato Vice President, Ouality Assurance 6005 Hidden Valley Road Carlsbad, California 92009

Re: K024233

Trade/Device Name: Kompressor Screw System Regulation Number: 888.3040 Regulation Name: Smooth or threaded metallic bone fixation fastener Regulatory Class: Class II Product Code: HWC Dated: December 19, 2002 Received: December 23, 2002

Dear Mr. Spampinato:

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 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 a legally

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Page 2 - Mr. John G. Spampinato

marketed predicate device 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), please contact the Office of Compliance at (301) 594-4659. 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 (800) 638-2041 or (301) 443-6597 or at its Internet address

http://www.fda.gov/cdrh/dsma/dsmamain.html

Sincerely yours,

Mark McMullen

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 of 1

510(k) Number: K024233

Device Name: Kompressor Compression Screw System

Indications For Use:

The use of the Kompressor compression screw is generally indicated for the reduction and fixation of fractures of the small bones of the hand and wrist, such as the scaphoid. It is indicated for use in the fixation of fractures classified as acute or fresh, as well as cases of non-union where conservative treatment options have failed.

Use of the implant is contraindicated in those cases where complex avascular necrosis has rendered bone stock inadequate.

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

Concurrence of CDRH, Office of Device Evaluation (ODE)

signature

	for (Division Sign-Off)
	Division of General, Restorative and Neurological Devices
510(k) Number	K024233

Prescription Use (Per 21 CFR 801 109)	OR	Over The Counter Use
---------------------------------------	----	----------------------

(Optional Format 1-2-96)

Regulation Number and Section

§ 888.3040 Smooth or threaded metallic bone fixation fastener.

(a)
Identification. A smooth or threaded metallic bone fixation fastener is a device intended to be implanted that consists of a stiff wire segment or rod made of alloys, such as cobalt-chromium-molybdenum and stainless steel, and that may be smooth on the outside, fully or partially threaded, straight or U-shaped; and may be either blunt pointed, sharp pointed, or have a formed, slotted head on the end. It may be used for fixation of bone fractures, for bone reconstructions, as a guide pin for insertion of other implants, or it may be implanted through the skin so that a pulling force (traction) may be applied to the skeletal system.(b)
Classification. Class II.