The RESORB-X® SF is intended for fractures of the craniofacial skeleton including, but not limited to, comminuted fractures of the naso-ethomoidal and infraorbital areas, comminuted fractures of the frontal sinus wall, and midface fractures; and reconstructive procedures of the midface or craniofacial skeleton. The RESORB-X® SF pins are designed only to be inserted with the RESORB-X® SF Sonotrode device.

The RESORB-X® SF is NOT intended for use in the mandible or full load-bearing situations, nor in areas of active infection or for patients with conditions including blood supply limitations, insufficient quantity or quality of bone, or latent infections.

The RESORB-X® SF Sonotrode is NOT intended for any other use and is only intended for use for insertion of the RESORB-X® SF pins.

Device Description

The RESORB-X® SF consists of RESORB-X® Pins made of Poly (D, L) - Lactide-Acid (PDLLA) of various diameters and lengths that are implanted utilizing ultrasonic force generated by an ultrasonic unit that causes a phase transition in the pin, allowing the pin to adapt to the previously drilled pilot hole in the surgical site and utilize the micro undercuts of the bone for retention. The RESORB-X® SF pins are designed to be used in conjunction with the previously cleared RESORB-X® Resorbable Plating System plates (K011590).

AI/ML Overview

This is a medical device 510(k) premarket notification for the RESORB-X® SF, a bone plate system. The document focuses on demonstrating substantial equivalence to predicate devices rather than providing a study on device performance against specific acceptance criteria. Therefore, most of the requested information regarding AI/algorithm performance and clinical study details is not present in this submission.

Here's a breakdown of the available information:

1. Table of Acceptance Criteria and Reported Device Performance

Acceptance Criteria (Explicitly stated)	Reported Device Performance
Mechanical strength (higher strength than predicate screws)	"The RESORB-X® SF pins have more favorable results (higher strength) than the previously cleared RESORB-X® screws." (Quantitative data is not provided in this summary, but referenced as being in section F-3.)
Limited heat transfer to surrounding bone	"The heat that is transferred to the surrounding bone is not significant and is shown in section F-3." (Quantitative data is not provided in this summary, but referenced as being in section F-3.)
No adverse effect on molecular weight, resorption, or strength retention due to insertion process	"The limited duration and low temperature exposure used during insertion does not affect the molecular weight, the resorption or the strength retention of the product as shown in section F-3 and does not adversely affect the product." (Quantitative data is not provided in this summary, but referenced as being in section F-3.)

2. Sample Size Used for the Test Set and Data Provenance

This document describes a medical device (RESORB-X® SF) and its technological characteristics, primarily comparing it to predicate devices. It does not mention or describe a "test set" in the context of an AI/algorithm study. The studies referenced are mechanical tests.

Test Set Sample Size: Not applicable in the context of an AI/algorithm study. For mechanical tests, the sample size is not specified in the provided text, only that "Mechanical tests have been preformed".
Data Provenance: Not applicable in the context of an AI/algorithm study. The mechanical tests would typically be performed in a laboratory setting. No information on country of origin or retrospective/prospective nature is provided for these mechanical tests.

3. Number of Experts Used to Establish Ground Truth for the Test Set and Qualifications

This information is not applicable as the document describes a mechanical device and its performance through mechanical testing, not an AI/algorithm where expert ground truth would be established.

4. Adjudication Method for the Test Set

This information is not applicable as the document does not describe an AI/algorithm study requiring adjudication of a test set.

5. Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study

No. A MRMC comparative effectiveness study is not mentioned or implied in this document. This submission pertains to a physical medical device (bone plate system), not an AI-powered diagnostic or assistive tool.

6. Standalone (Algorithm Only) Performance Study

No. This document describes a physical medical device. It does not involve an algorithm, and therefore, no standalone algorithm performance study was conducted.

7. Type of Ground Truth Used

For the mechanical tests mentioned, the "ground truth" would likely be physical measurements and material properties (e.g., tensile strength, shear strength, temperature measurements, molecular weight analysis) obtained through standard laboratory testing protocols. It's not "expert consensus, pathology, or outcomes data" in the typical sense of AI/clinical studies.

8. Sample Size for the Training Set

This information is not applicable as this is not an AI/machine learning device. The device is a physical bone plate system.

9. How the Ground Truth for the Training Set was Established

This information is not applicable as this is not an AI/machine learning device.

Summary

{0}------------------------------------------------

X051236 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

510(K) SUMMARY

AUG 2 2 2005

AUG 22 2005
Submitter:	KLS-Martin, L.P.11239-1 St. Johns Industrial Parkway SouthJacksonville, FL 32246Phone: 904-641-7746Fax: 904-641-7378
Contact Person:	Jennifer DamatoDirector RA/QA
Date of Summary:	10 May 2005
Device Name:	RESORB-X® SF
Trade Name:	RESORB-X® SF
Common Name:	Bone Plate
ClassificationName and Number:	Bone Plate (872.4760)
Regulatory Class:	II
Predicate Devices:	RESORB-X® Resorbable Plating System (K011590)
	Siroson L and Sirosonic Ultrasonic Scalers (K033640)
	EMS Piezon® Master 600 (K022328)
Intended Use:	The RESORB-X® SF is intended for fractures of thecraniofacial skeleton including, but not limited to,comminuted fractures of the naso-ethomoidal andinfraorbital areas, comminuted fractures of the frontalsinus wall, and midface fractures; and reconstructiveprocedures of the midface or craniofacial skeleton.The RESORB-X® SF pins are designed only tobe inserted with the RESORB-X® SF Sonotrodedevice.
	The RESORB-X® SF is NOT intended for use in themandible or full load-bearing situations, nor in areasof active infection or for patients with conditionsincluding blood supply limitations, insufficient quantityor quality of bone, or latent infections.
	The RESORB-X® SF Sonotrode is NOT intended forany other use and is only intended for use forinsertion of the RESORB-X® SF pins.C-1

{1}------------------------------------------------

Device Description:

Technological Characteristics:

Similarities to Predicate

The RESORB-X® SF is identical to RESORB-X® Resorbable Plating System (K011590) in intended use and in chemical composition.

The RESORB-X® SF pin diameters and pin lengths are identical in diameter and length to RESORB-X® Resorbable Plating System (K011590)

The RESORB-X® SF ultrasound unit is similar to the Siroson L and Sirosonic Ultrasonic Scalers (K033640) and the EMS Piezon® Master 600 (K022328) in operating voltages, energy delivered and tip operating frequency.

Differences to Predicate

The RESORB-X® SF pins utilize a dual diameter stepped drill with a stop and does not require the hole to be pre-tapped. The RESORB-X® Resorbable Plating System (K011590) utilizes a single diameter drill and requires the hole to be tapped.

The RESORB-X® SF ultrasound unit produces an ultrasonic force to generate a phase transition in the pin which allows the pin to adapt to the previously drilled pilot hole in the surgical site and utilize the micro undercuts of the bone for retention. The Siroson L and Sirosonic Ultrasonic Scalers (K033640) and the EMS Piezon® Master 600 (K022328) generate an ultrasonic force for dental procedures.

{2}------------------------------------------------

The RESORB-X® SF is substantially equivalent in intended use to the RESORB-X® Resorbable Plating System (K011590).

Discussion:

The RESORB-X® SF and the RESORB-X® Resorbable Plating System (K011590) screws are intended for identical surgical procedures. Further, the RESORB-X® SF is used in combination with the exact same RESORB-X® Resorbable Plating System (K011590) plates for fixation.

Mechanical tests have been preformed to compare the strength of the RESORB-X® SF pins with the RESORB-X® screws and the data is included in section F-3. To summarize the findings, the RESORB-X® SF pins have more favorable results (higher strength) than the previously cleared RESORB-X® screws.

The major difference between this product and the previously cleared product is in the method of insertion. Instead of using a drill, tap, screw method of insertion, the RESORB-X® SF uses the characteristics inherent in polymers allowing the polymer to mold into the surrounding space when heated. The heat, in this case, is generated by the fiction between the pin and the surrounding pilot hole though the use of an ultrasonic generator. The "phase" change that allows the pin to mold to the surgical site is temporary and is reversed when the ultrasonic force is removed. The heat that is transferred to the surrounding bone is not significant and is shown in section F-3.

Finally, the frictional heat that is necessary to allow the RESORB-X® SF pins to mold into the pilot hole is well below the temperatures used in manufacturing the product and the previously cleared the RESORB-X® Resorbable Plating System (K011590) screws. The limited duration and low temperature exposure used during insertion does not affect the molecular weight, the resorption or the strength retention of the product as shown in section F-3 and does not adversely affect the product.

{3}------------------------------------------------

Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo features a stylized eagle with three curved lines representing its body and wings. The text "DEPARTMENT OF HEALTH AND HUMAN SERVICES USA" is arranged in a circular pattern around the eagle.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

AUG 2 2 2005

Ms. Jennifer Damato Director RA/QA KLS-Martin, L.P. 11239 St. Johns Industrial Parkway South Jacksonville, Florida 32246

Re: K051236

Trade/Device Name: RESORB-X® SF Regulation Number: 21 CFR 872.4760 Regulation Name: Bone Plate Regulatory Class: II Product Code: JEY Dated: July 22, 2005 Received: July 28, 2005

Dear Ms. Damato:

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.

{4}------------------------------------------------

Page 2 - Ms. Damato

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 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 (240) 276-0115. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). 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) 443-6597 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.

Sincerely yours,

Anthen V. in for
Chiu Lin, Ph.D.

Director Division of Anesthesiology, General Hospital Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

{5}------------------------------------------------

Indications for Use

K051236 510(k) Number (if known):

Device Name: RESORB-X® SF

Indications For Use:

The RESORB-X® SF Sonotrode is NOT intended for any other use and is only intended for use for insertion of the RESORB-X® SF pins.

Prescription Use V (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)

Susan Runner

Page 1 of 1

Division Sign (Uivision Sign-Off)
Division of Anesthesiology, General Hospital, Infection Control, Dental Devices

510(k) Number:

B-1

Regulation Number and Section

§ 872.4760 Bone plate.

(a)
Identification. A bone plate is a metal device intended to stabilize fractured bone structures in the oral cavity. The bone segments are attached to the plate with screws to prevent movement of the segments.(b)
Classification. Class II.