Midas Rex Attachments and Dissecting Tools

K202552 · Medtronic Powered Surgical Solutions (Mpss) · OLO · Nov 2, 2020 · Neurology

Device Facts

• Record ID: K202552
• Device Name: Midas Rex Attachments and Dissecting Tools
• Applicant: Medtronic Powered Surgical Solutions (Mpss)
• Product Code: OLO · Neurology
• Decision Date: Nov 2, 2020
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 882.4560
• Device Class: Class 2
• Attributes: Therapeutic

Intended Use

The Midas Rex™ attachments and dissecting tools for Mazor are indicated for the incision/cutting, drilling, burring, and removal of hard tissue and bone in open and minimally invasive spine procedures. Computer-assisted surgery and its associated applications are intended as an aid for locating anatomical structures in either open or percutaneous procedures. Their use is indicated for any medical condition for which the use of stereotactic surgery may be appropriate and where reference to a rigid anatomical structure, such as a long bone or vertebra, can be identified relative to a CT- or MR-based model, fluoroscopic images, or digitized landmarks of the anatomy.

Device Story

Midas Rex attachments and dissecting tools are surgical instruments designed for use with the Mazor X Stealth Edition system in spine procedures. The system utilizes optical (infrared) tracking to enable real-time navigation. The device consists of attachments and dissecting tools powered by existing electric or pneumatic handpieces. During surgery, the device provides navigation data to the Mazor X system, allowing the surgeon to precisely locate anatomical structures relative to pre-operative CT/MR images or intra-operative fluoroscopy. The output is visual guidance on the surgical system display, assisting the surgeon in performing bone removal and drilling tasks. This integration aims to improve surgical accuracy and patient outcomes by providing real-time feedback on tool position relative to patient anatomy. The device is intended for use by surgeons in clinical settings.

Clinical Evidence

Bench testing only. Evidence includes functional and reliability design verification, navigational accuracy analysis (Mean Positional Error ≤ 2.0 mm, Mean Trajectory Error ≤ 2.0 degrees), CAD model analysis, and human factors/usability testing. Biological safety was validated per ISO 10993-1:2018, confirming the devices are non-cytotoxic, non-sensitizing, non-irritating, non-toxic, non-pyrogenic, and non-hemolytic.

Technological Characteristics

Materials: Stainless steel (attachments), aluminum/stainless steel (tracker), M2 tool steel (dissecting tools). Energy: Electric (IPC) or pneumatic. Connectivity: Integrated optical (infrared) tracker for navigation. Sterilization: Gamma (single-use tools), steam (reusable attachments). Form factor: 23cm/31cm length tools. Navigation accuracy: Mean positional error 1.12 mm, mean trajectory error 0.37 degrees.

Indications for Use

Indicated for incision, cutting, drilling, burring, and removal of hard tissue and bone in open and minimally invasive spine procedures. Used as an aid for locating anatomical structures in open or percutaneous stereotactic surgery where rigid anatomical structures (e.g., long bone, vertebra) are referenced to CT/MR models, fluoroscopic images, or digitized landmarks.

Regulatory Classification

Identification

A stereotaxic instrument is a device consisting of a rigid frame with a calibrated guide mechanism for precisely positioning probes or other devices within a patient's brain, spinal cord, or other part of the nervous system.

Predicate Devices

• MR8 Drill System and Midas Rex MR8 ClearView Tools (K183515)
• Stealth Midas MR8 System (K183644)

Submission Summary (Full Text)

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

Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health and Human Services logo. To the right of that is a blue square with the letters "FDA" in white. To the right of the blue square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.

November 2, 2020

Medtronic Powered Surgical Solutions (MPSS) Jainam Shah Sr Regulatory Affairs Specialist 4620 North Beach Street Fort Worth, Texas 76137

Re: K202552

Trade/Device Name: Midas Rex Attachments and Dissecting Tools Regulation Number: 21 CFR 882.4560 Regulation Name: Stereotaxic Instrument Regulatory Class: Class II Product Code: OLO Dated: September 2, 2020 Received: September 3, 2020

Dear Jainam Shah:

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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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

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

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); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.

Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.

For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email ([e-mail]) or phone [phone] or 301-796-7100).

Sincerely,

For: Shumaya Ali, M.P.H. Assistant Director DHT6C: Division of Restorative, Repair, and Trauma Devices OHT6: Office of Orthopedic Devices Office of Product Evaluation and Ouality Center for Devices and Radiological Health

Enclosure

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

# Indications for Use

510(k) Number (if known) K202552

Device Name Midas RexTM attachments and dissecting tools

Indications for Use (Describe)

The Midas Rex™ attachments and dissecting tools for Mazor are indicated for the incision/outting, drilling, burring, and removal of hard tissue and bone in open and minimally invasive spine procedures.

Computer-assisted surgery and its associated applications are intended as an aid for locating anatomical structures in either open or percutaneous procedures. Their use is indicated for any medical condition for which the use of stereotactic surgery may be appropriate and where reference to a rigid anatomical structure, such as a long bone or vertebra, can be identified relative to a CT- or MR-based model, fluoroscopic images, or digitized landmarks of the anatomy.

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

X Prescription Use (Part 21 CFR 801 Subpart D)

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

# CONTINUE ON A SEPARATE PAGE IF NEEDED.

This section applies only to requirements of the Paperwork Reduction Act of 1995.

## *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.*

The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:

> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff(@fda.hhs.gov

"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."

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

# 510(k) Summary

# September 02, 2020

- I. Company: Medtronic Powered Surgical Solutions 4620 North Beach Street Fort Worth, Texas 76137 Telephone Number: [phone]
- Jainam Shah Contact: Sr. Regulatory Affairs Specialist Telephone Number: [phone] Fax: [phone] Email: [e-mail]

Jenna Groves (Alternate) Regulatory Affairs Manager Telephone number: [phone] Email: [e-mail]

- II. Proprietary Trade Name: Midas Rex™ Attachments and Dissecting tools
- III. Common Name: Orthopedic Stereotaxic Instrument
- IV. Classification Name: Stereotaxic Instrument (21 CFR 882.4560)
- V. Classification: Class II

#### VI. Product Code: OLO

#### VII. Predicate Devices

The legally marketed predicate devices are identified below:

| Predicate | 510(k) Clearance |
|------------------------------------------------------------------------------------|-----------------------------|
| Primary Predicate<br>MR8TM Drill System and Midas<br>RexTM MR8TM ClearViewTM Tools | K183515<br>S.E. 12-May-2019 |
| Additional Predicate:<br>Stealth Midas MR8TM System | K183644<br>S.E. 22-May-2019 |

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

#### VIII. Product Description:

Midas Rex™ attachments and surgical dissecting tools for Mazor are intended for the incision/cutting, drilling, burring, and removal of hard tissue and bone. The subject instruments are designed to be utilized through a cannula, for use with the Mazor X Stealth Edition™ system in open and minimally invasive spine procedures.

The subject devices perform the intended function as part of the existing Medtronic Midas Rex TM surgical drill systems which consist of the subject attachments and dissecting tools, electric and pneumatic drill handpieces and system accessories.

## IX. Indications for Use:

The Midas Rex™ attachments and dissecting tools for Mazor are indicated for the incision/cutting, drilling, burring, and removal of hard tissue and bone in open and minimally invasive spine procedures.

Computer-assisted surgery and its associated applications are intended as an aid for locating anatomical structures in either open or percutaneous procedures. Their use is indicated for any medical condition for which the use of stereotactic surgery may be appropriate and where reference to a rigid anatomical structure, such as a long bone or vertebra, can be identified relative to a CT- or MR-based model, fluoroscopic images, or digitized landmarks of the anatomy.

## X. Comparison of the Technological Characteristics:

The subject Midas Rex™ attachments and dissecting tools utilize the same fundamental scientific technology and have the same mode of operation and functionality as the predicate attachments and surgical dissecting tools (K183515), i.e. they are powered by the existing electric/pneumatic handpieces for the intended use. The subject devices have equivalent materials and sterilization/reprocessing methods as the primary predicate (K183515). The changes in design features between the subject and the predicates do not raise any new risks or any concerns about the safety and effectiveness. The subject navigated devices have an integrated optical tracker to enable real-time navigation in a manner identical to the additional predicate Stealth Midas™ (K183644). The subject navigated devices also meet the established system-level navigation accuracy requirements.

| Table 1: Comparison of technological characteristics | | | |
|------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Feature | Subject Devices<br>(Midas RexTM<br>attachments and<br>surgical dissecting tools) | Primary Predicate<br>Midas MR8TM Drill System<br>and Midas RexTM MR8TM<br>ClearViewTM Tools<br>(K183515) | Additional Predicate<br>Stealth MidasTM<br>MR8TM<br>(K183644) |
| Regulation | 21 CFR 882.4560<br>(Stereotaxic Instrument) | 21 CFR 882.4360 (Motor,<br>Drill, Electric)<br><br>21CFR 882.4370 (Motor,<br>Drill, Pneumatic) | 21 CFR 882.4560<br>(Stereotaxic Instrument) |
| Feature | Subject Devices (Midas Rex TM attachments and surgical dissecting tools) | Primary Predicate Midas MR8 TM Drill System and Midas Rex TM MR8 TM ClearView TM Tools (K183515) | Additional Predicate Stealth Midas TM MR8 TM (K183644) |
| | | 21 CFR 882.4310 (Drills, Burs, Trephines & Accessories | |
| Product Code | OLO | HBC, HBB, HBE | OLO, HAW |
| Intended Use | Incision/cutting, drilling, burring, and removal of hard tissue and bone. | Incision / cutting, removal, drilling, and sawing of soft and hard tissue, bone, and biomaterials. | Incision / cutting, removal, drilling, and sawing of soft and hard tissue, bone, and biomaterials. |
| Indications for Use | The Midas Rex TM attachments and dissecting tools for Mazor are indicated for the incision/cutting, drilling, burring, and removal of hard tissue and bone in open and minimally invasive spine procedures.<br>Computer-assisted surgery and its associated applications are intended as an aid for locating anatomical structures in either open or percutaneous procedures. Their use is indicated for any medical condition for which the use of stereotactic surgery may be appropriate and where reference to a rigid anatomical structure, such as a long bone or vertebra, can be identified relative to a CT- or MR-based model, fluoroscopic images, or digitized landmarks of the anatomy. | The Medtronic MR8 Drill System is indicated for the incision/ cutting, removal, drilling, and sawing of soft and hard tissue, bone, and biomaterials in Neurosurgical (Cranial and Craniofacial including craniotomy); Ear, Nose and Throat (ENT), Maxillofacial, Orthopedic, Arthroscopic, Spinal, Sternotomy, and General Surgical Procedures.<br>Additionally, the MR8 Drill System is indicated for the incision/cutting, removal, drilling, and sawing of soft and hard tissue, bone, and biomaterials during open and minimally invasive spine procedures, which may incorporate application of various surgical techniques during the following lumbar spinal procedures:<br>• Lumbar Microdiscectomy<br>• Lumbar Stenosis Decompression<br>• Posterior Lumbar Interbody Fusion (PLIF)<br>• Transforaminal Lumbar Interbody Fusion (TLIF)<br>• Anterior Lumbar Interbody Fusion (ALIF)<br>• Direct Lateral Interbody Fusion (DLIF)<br>The Midas Rex MR8 ClearView Tools are used only in conjunction with the MR8 Drill System to perform | The Stealth-Midas MR8 TM System is indicated for the drilling, burring and removal of hard tissue and bone in spinal and cranial surgical procedures.<br>Computer-assisted surgery and its associated applications are intended as an aid for precisely locating anatomical structures in either open or percutaneous procedures. Their use is indicated for any medical condition in which the use of stereotactic surgery may be appropriate, and where reference to a rigid anatomical structure, such as a long bone, or vertebra, can be identified relative to a CT- or MR-based model, fluoroscopic images, or digitized landmarks of the anatomy. |
| Feature | Subject Devices<br>(Midas Rex™<br>attachments and<br>surgical dissecting tools) | Primary Predicate<br>Midas MR8™ Drill System<br>and Midas Rex™ MR8™<br>ClearView™ Tools<br>(K183515) | Additional Predicate<br>Stealth Midas™<br>MR8™<br>(K183644) |
| | | Midas Rex MR8 Drill System<br>and associated User's Guides<br>for the Indications of Use | |
| General<br>System<br>Components | • Attachments - Guided<br>and Navigated w/<br>optical tracker<br>• Surgical Dissecting<br>Tools<br>• System Accessories | • Electric Handpieces<br>• Pneumatic Handpieces<br>• Attachments<br>• Surgical Dissecting Tools<br>• System Accessories | • Electric Handpieces<br>w/ optical tracker<br>• Pneumatic Handpieces<br>w/ optical tracker<br>• Attachments<br>• Surgical Dissecting<br>Tools<br>• System Accessories |
| Materials | Attachments: Stainless<br>Steel<br>Tracker: Aluminum,<br>Stainless<br>Steel<br>Surgical Dissecting<br>Tools: Tool (M2) Steel | Attachments: Stainless<br>Steel, Aluminum, Ceramic,<br>Phenolic, Epoxy, Chrome<br>Coated Brass, Torlon 4301<br>Surgical Dissecting Tools:<br>Stainless Steel, Tool Steel,<br>Alloy Steel, Carbide, TDC<br>Coating, Diamond Coating<br>in Nickel Substrate,<br>Titanium Nitride | Attachments - Stainless<br>Steel, Aluminum,<br>Ceramic, Phenolic,<br>Epoxy, Chrome Coated<br>Brass, Polymeric<br>Surgical Dissecting<br>Tools - Stainless Steel,<br>Tool Steel, Alloy Steel,<br>Carbide, TDC Coating,<br>Diamond Coating in<br>Nickel Substrate,<br>Titanium Nitride<br>Tracker: Aluminum |
| Surgical<br>Dissecting<br>Tool Tip<br>Style | Twist Drill | Round/Acorn, Match<br>Head, Ball, Cylinder,<br>Oval, Tapered/Side<br>Cutting, Metal Cutting, Twist<br>Drill, Hole Maker/Saw,<br>Reverse Taper | Round/Acorn, Match<br>Head, Ball, Cylinder,<br>Oval, Tapered/Side<br>Cutting, Metal Cutting,<br>Twist Drill, Hole<br>Maker/Saw, Reverse<br>Taper |
| Surgical<br>Dissecting<br>Tool Overall<br>Length | 23cm<br>31cm | 3 - 42 cm | 3-42 cm |
| Surgical<br>Dissecting<br>Tool Head<br>Diameter | 3.0 mm | 0.5 - 25 mm | 0.5 - 25 mm |
| Attachment<br>Configuration | Straight | Straight, Angled,<br>Variable, Double-Lock,<br>Footed, Telescoping,<br>Perforator, Jacobs Chuck, J-<br>Latch, Contra Angle, Metal<br>Cutting | Straight, Angled,<br>Variable, Double-Lock,<br>Footed, Telescoping,<br>Perforator, Jacobs<br>Chuck, J-Latch, Contra<br>Angle, Metal Cutting |
| Feature | Subject Devices<br>(Midas RexTM<br>attachments<br>and<br>surgical dissecting tools) | Primary Predicate<br>Midas MR8TM Drill System<br>and Midas RexTM MR8TM<br>ClearViewTM Tools<br>(K183515) | Additional Predicate<br>Stealth MidasTM<br>MR8TM<br>(K183644) |
| Attachment<br>Length | 23 cm<br>31cm | 2 – 40 cm | 2 – 40 cm |
| Drill System<br>Operating<br>Principle | • Pneumatic (powered<br>by Pneumatic Pressure)<br>• Electric (powered<br>by IPC) | • Pneumatic (powered by<br>Pneumatic Pressure)<br>• Electric (powered by IPC) | • Pneumatic (powered<br>by Pneumatic<br>Pressure)<br>• Electric (powered by<br>IPC) |
| Packaging -<br>Sterile<br>Surgical<br>Dissecting<br>Tools | Individually packaged in<br>a clear plastic capped<br>tube placed within a<br>poly-poly<br>pouch | Individually packaged in a<br>clear plastic capped tube<br>placed within a poly-poly<br>pouch | The Surgical Dissecting<br>Tools are individually<br>packaged in a clear<br>plastic capped tube<br>placed within a poly-poly<br>pouch. |
| Sterilization<br>Method –<br>Single Use<br>Tools | Gamma with minimum<br>radiation dose of 25 kGy | Gamma with minimum<br>radiation dose of 25 kGy | Gamma with minimum<br>radiation dose of 25 kGy |
| Sterilization<br>Method -<br>Reusable<br>Attachment | Steam | Steam | Steam |
| Shelf Life -<br>Surgical<br>Dissecting<br>Tools | 5 Years | 5 Years | 5 Years |
| Navigation<br>Optical<br>Tracking<br>Principle | Optical (Infra-red) | N/A | Optical (Infra-red) |
| System level<br>Navigation<br>Accuracy<br>Acceptance<br>Criteria | Mean Positional Error<br>(mm) ≤ 2.0 mm<br>Mean Trajectory Error<br>(degrees): ≤ 2.0 degrees | N/A | Mean Positional Error<br>(mm) ≤ 2.0 mm<br>Mean Trajectory Error<br>(degrees): ≤ 2.0 degrees |
| System level<br>Navigation<br>Accuracy<br>Values | Mean Positional Error<br>(mm):<br>1.12 mm<br>Mean Trajectory Error<br>(degrees):<br>0.37 degrees | N/A | Mean Positional Error<br>(mm):<br>0.94 mm<br>Mean Trajectory Error<br>(degrees):<br>0.85 degrees |

Table 1· Comnarison of technological characteristics

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

{6}------------------------------------------------

{7}------------------------------------------------

{8}------------------------------------------------

## XI. Discussion of the Performance Testing:

Testing conducted to demonstrate equivalency of the subject device to the predicate devices is summarized as follows:

| Performance Testing<br>Activity | Description |
|------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Functional and<br>Reliability Design<br>Verification | Demonstrates the ability of the Midas Rex™ attachment and<br>dissecting tools to perform throughout a single procedure<br>and throughout expected product life thus, verifying the<br>design robustness. |
| Navigational<br>Accuracy Analysis | Provides confirmation that the subject devices satisfy the<br>necessary navigational accuracy requirements. |
| CAD Model<br>Analysis | Verifies the correctness of CAD model representations of<br>the subject devices for the Mazor X Stealth Edition™<br>system. |
| Human Factors/<br>Usability Testing | Demonstrates that the usability and human factors<br>considerations were adequately addressed and validated, and<br>the product design performs according to its intended use. |

The subject devices met the appropriate requirements and passed all the performance testing activities listed above. Additionally, biological endpoint testing, conducted per recommendations from ISO 10993-1:2018, indicates that the subject devices are noncytotoxic, non-sensitizing, non- irritating, non-toxic, non-pyrogenic, non-hemolytic and pose a negligible risk of adverse biological effects to patients when used as intended.

## XII. Conclusions

The subject devices have shown through comparison to be substantially equivalent to the identified predicate devices.