MINIARS SCREWS

K143596 · Overmed Srl. · HWC · Feb 5, 2016 · Orthopedic

Device Facts

• Record ID: K143596
• Device Name: MINIARS SCREWS
• Applicant: Overmed Srl.
• Product Code: HWC · Orthopedic
• Decision Date: Feb 5, 2016
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 888.3040
• Device Class: Class 2
• Attributes: Therapeutic

Indications for Use

MINIARS screw system is intended for fixation of intra-articular fractures, non-union and osteotomies of small bones and small bone fragments. Some examples include: - arthrodesis of small joints (foot and hand surgery); - intra-articular metatarsal and metacarpal fractures; - osteotomies for hallux valgus treatment.

Device Story

MINIARS screws are solid, one-piece, cannulated, partially threaded metallic implants used for orthopedic bone fixation. Designed for small bones and fragments, they feature a dual-thread profile with a wide distal pitch to facilitate bone fragment compression and cancellous bone hold. The distal thread includes self-drilling and self-tapping grooves. Implants are available in 2.2 mm and 2.6 mm diameters and lengths from 10 mm to 30 mm. Used by orthopedic surgeons in clinical settings, the screws are implanted to stabilize fractures or osteotomies, promoting healing through mechanical fixation. They are supplied sterile for single use.

Clinical Evidence

Bench testing only. Performance supported by FEA analysis (300Ncm torsional load), pullout strength testing, maximum screw torque testing, bending tests (yield moment at 2.5 mm displacement), and dimensional comparisons with predicate cannulated screws.

Technological Characteristics

Material: Titanium Alloy (Ti6Al4V ELI gr. 5). Design: Cannulated, partially threaded, solid one-piece. Head: Hexagonal torx 6 (ISO 10664). Diameters: 2.2 mm, 2.6 mm. Lengths: 10-30 mm. Sterilization: Beta rays. Connectivity: None.

Indications for Use

Indicated for fixation of intra-articular and extra-articular fractures, non-union, and osteotomies of small bones and small bone fragments, including small joint arthrodesis (foot/hand), metatarsal/metacarpal fractures, and hallux valgus osteotomies.

Regulatory Classification

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.

Predicate Devices

• SBI AutoFix™ System (K052576)
• Synthes 3.0 mm Headless Compression Screws (K050636)

Submission Summary (Full Text)

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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo is a circular seal with the department's name around the perimeter. Inside the circle is an emblem featuring a stylized caduceus, which is a symbol often associated with healthcare. The caduceus is depicted with a staff entwined by two snakes and topped with wings.

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

February 5, 2016

Overmed S.r.l. Davide Pizzamiglio Legal Representative Via Lucania 23 Buccinasco Milan, 20090 ITALY

Re: K143596

Trade/Device Name: MINIARS Screws Regulation Number: 21 CFR 888.3040 Regulation Name: Smooth or threaded metallic bone fixation fastener Regulatory Class: Class II Product Code: HWC Dated: December 3, 2015 Received: December 24, 2015

Dear Mr. Pizzamiglio:

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 comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Parts 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set

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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 contact the Division of Industry and Consumer Education at its toll-free number [phone] or [phone] or at its Internet address

http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. 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/ReportaProblem/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 Industry and Consumer Education at its toll-free number [phone] or [phone] or at its Internet address

http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.

Sincerely yours,

## Lori A. Wiggins -S

for

Mark N. Melkerson Director Division of Orthopedic Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

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DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration

#### Indications for Use

510(k) Number (if known)

#### K143596

Device Name

MINIARS Screws

Indications for Use (Describe)

MINIARS screw system is intended for fixation of intra-articular fractures, non-union and osteotomies of small bones and small bone fragments. Some examples include:

- arthrodesis of small joints (foot and hand surgery);

- intra-articular metatarsal and metacarpal fractures;

- osteotomies for hallux valgus treatment.

Type of Use (Select one or both, as applicable)

> Prescription Use (Part 21 CFR 801 Subpart D)

_ Over-The-Counter Use (21 CFR 801 Subpart C)

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| Name of Submitter | Overmed S.r.l.<br>Via Lucania 23<br>20090 Buccinasco (MI)<br>Italy |
|--------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------|
| Name of Manufacurer | Overmed S.r.l.<br>Via Lucania 23<br>20090 Buccinasco (MI)<br>Italy |
| Primary Contact Person | Ms. Rossella Balossino<br>Quality Assurance Responsible<br>[e-mail]<br>Phone number: [phone]<br>Mobile Phone number [phone] |
| Secondary Contact Person | Mr. Davide Pizzamiglio<br>Legal representative<br>[e-mail]<br>Phone number: [phone]<br>Mobile Phone number : [phone] |
| Trade Name | MINIARS Screws |
| Device Common name | MINIARS Screws |
| Device Classification | Class II |
| Review Panel | Orthopedic |
| Product Code | HWC |
| CFR Section | 21CFR888.3040<br>"Smooth or threaded metallic bone fixation fastener" |

## 510(k) Summary

This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of the SMDA 1990 and 21 CFR 807.92.

The assigned 510(k) number is: K143596

# 5.1 Identification of Predicate Devices:

| Predicate Device | 510(k) Number | Product Code |
|-----------------------------------------------|---------------|--------------|
| SBI AutoFix™ System | K052576 | HWC |
| Synthes 3.0 mm Headless<br>Compression Screws | K050636 | HWC |

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# 5.2 Description:

The following is a brief description of the Overmed MINIARS Screws.

MINIARS screw system is intended for fixation of intra-articular and extra-articular fractures, non-union and osteotomies of small bones and small bone fragments.

MINIARS screws are implants that will be in contact with body tissues for more than 30 days. Instrumentation used to assist in their implantation will be in temporary contact (inferior to 24 hours) with body tissues.

The MINIARS screws are intended for single use only.

The implant is a solid, one piece, cannulated and partially thread shaped design.

MINIARS screws are available in two different external thread diameters: 2.2 mm e 2.6 mm.

MINIARS screws are available in a range of lengths from 10mm to 30mm.

All the screws sizes available are described in table 5.1.

The screws are partially threaded: the proximal and distal parts are threaded while the middle part is cylindrical, as visible in figure 5.1.

The thread shape has been designed to facilitate the compression of the bone fragments and the hold in cancellous bone thanks to the particular profile design: the wide thread pitch of the distal part penetrates in bone tissue faster than the thread of the proximal part, reducing and compressing the fracture through screw advance.

Distal thread presents self-drilled and self-tapping grooves.

Image /page/4/Picture/12 description: The image shows a long, silver-colored medical screw. The screw has threads on both ends and a smooth, cylindrical shaft in the middle. The threads appear to be designed for bone fixation, and the screw is likely used in orthopedic surgery to stabilize bone fractures or joints.

#### Fig. 5.1 MINIARS Screw

The screws present a hexagonal torx 6 head which is conforming to ISO 10664 standard.

All the MINIARS screws are supplied in a sterile state (beta rays); the single screw is packed into a double blister which allows the usage in surgery.

The MINIARS Screws are made of Titanium Alloy (Ti6A14V ELI gr. 5) and is available in the range of sizes reported in the table below.

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| MINIARS Screw Diameter | Code (STERILE) | Length [mm] |
|------------------------|----------------|-------------|
| Ø2.2 | A0502210 | 10 |
| | A0502212 | 12 |
| | A0502214 | 14 |
| | A0502216 | 16 |
| | A0502218 | 18 |
| | A0502220 | 20 |
| | A0502222 | 22 |
| | A0502224 | 24 |
| | A0502226 | 26 |
| | A0502228 | 28 |
| | A0502230 | 30 |
| Ø2.6 | A0502610 | 10 |
| | A0502612 | 12 |
| | A0502614 | 14 |
| | A0502616 | 16 |
| | A0502618 | 18 |
| | A0502620 | 20 |
| | A0502622 | 22 |
| | A0502624 | 24 |
| | A0502626 | 26 |
| | A0502628 | 28 |
| | A0502630 | 30 |

### Table 5.1 MINIARS Screw sizes

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# 5.3 Indications for Use:

MINIARS screw system is intended for fixation of intra-articular and extra-articular fractures, non-union and osteotomies of small bones and small bone fragments. Some examples include:

- arthrodesis of small joints (foot and hand surgery);
- intra-articular metatarsal and metacarpal fractures;
- osteotomies for hallux valgus treatment.

# 5.4 Performance Testing:

To support the performance characteristics of MINIARS screws we conducted the following tests:

- FEA analysis, to study the maximum stress in the subject screw under a 300Ncm torsional load;
- Pullout test, to measure the strength to be employed in order to extract a screw . totally inserted into the bone;
- Maximum screw torque test, to measure the maximum torque bearable before the ● screw failure;
- Bending test, to measure the vield moment reached after a 2.5 mm displacement. ●
- . Dimensional comparison with other 510(k) cannulated screws

The results demonstrated that the performance of the subject device is substantially equivalent to the predicate devices.

# 5.5 Substantial equivalence:

Documentation is provided which demonstrates the Overmed MINIARS Screws to be substantially equivalent to other legally marketed devices. All the devices are "Smooth or threaded metallic bone fixation fastener" as defined in 21 CFR 888.3040, furthermore, the size, shape and materials for the subject devices are comparable to the predicate devices.

## 5.6 Conclusion:

Based upon the similarities in design, materials, performance testing and intended uses, the Overmed MINIARS Screw is substantially equivalent to the predicate devices.