BLACKSTONE MEDICAL INC. ANTERIOR CERVICAL PLATE SYSTEM

K974885 · Blackstone Medical, Inc. · KWQ · Jun 17, 1998 · Orthopedic

Device Facts

• Record ID: K974885
• Device Name: BLACKSTONE MEDICAL INC. ANTERIOR CERVICAL PLATE SYSTEM
• Applicant: Blackstone Medical, Inc.
• Product Code: KWQ · Orthopedic
• Decision Date: Jun 17, 1998
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 888.3060
• Device Class: Class 2
• Attributes: Therapeutic

Intended Use

The BLACKSTONE MEDICAL, INC. Anterior Cervical Plate System is to be used for anterior screw fixation of the cervical spine (C2-C7). The indications are as follows: Indications: Degenerative Disc Disease (ddd)* *Back pain of discogenic origin with degeneration of the disc as confirmed by history and radiographic studies. Spondylolisthesis Fracture Spinal Stenosis Deformities (i.e., scoliosis, kyphosis, lordosis) Tumor Pseudoarthrosis Revision of previous failed fusion surgery

Device Story

Anterior cervical plate system for spinal stabilization; components include titanium alloy plates, screws, and locking mechanisms. Surgeon selects appropriate plate length; positions on anterior cervical spine; uses cannula, drill, and tap to prepare vertebral bodies; inserts screws; secures with locking plate. Used in clinical/surgical settings by physicians. Provides mechanical fixation to facilitate spinal fusion. Benefits include stabilization of cervical spine segments to address instability from various pathologies.

Clinical Evidence

Bench testing only. No clinical data provided. Mechanical equivalence supported by Finite Element Analysis (FEA) comparing stiffness and stress profiles against a predicate device.

Technological Characteristics

Materials: Titanium 6Al-4V Eli alloy (ASTM F-136). Components: Plates, screws, locking plates, and surgical instruments (guides, drills, taps, drivers, benders). Principle: Mechanical fixation via anterior cervical plating. Connectivity: None. Sterilization: Not specified.

Indications for Use

Indicated for anterior screw fixation of the cervical spine (C2-C7) to stabilize the spine during solid fusion development in patients with degenerative disc disease, spondylolisthesis, fracture, spinal stenosis, deformities (scoliosis, kyphosis, lordosis), tumor, pseudoarthrosis, or revision of failed fusion.

Regulatory Classification

Identification

A spinal intervertebral body fixation orthosis is a device intended to be implanted made of titanium. It consists of various vertebral plates that are punched into each of a series of vertebral bodies. An eye-type screw is inserted in a hole in the center of each of the plates. A braided cable is threaded through each eye-type screw. The cable is tightened with a tension device and it is fastened or crimped at each eye-type screw. The device is used to apply force to a series of vertebrae to correct “sway back,” scoliosis (lateral curvature of the spine), or other conditions.

Predicate Devices

• CODMAN Anterior Cervical Plate System
• SYNTHES Cervical Locking Plate System
• SOFAMOR DANEK ORION Anterior Cervical Plate System

Reference Devices

• Synthes Performance Cervical Plate

Submission Summary (Full Text)

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JUN 17 1998

# Blackstone Medical Inc. Anterior Cervical Plate System 510(k) Summary

Blackstone Medical Inc. Company: 90 Brookdale Drive Springfield, MA 01104 Phone: [phone]

Blackstone Medical Inc. Anterior Cervical Plate System Tradename:

Classification: Spinal Intervertebral Body Fixation Orthosis

The principal components of the Blackstone Medical Inc. Anterior Description: Cervical Plate System are plates, screws, and locking plate made from titanium 6Al-4V Eli alloy, as per ASTM F-136. The instrument set includes

> 6 Degree/15 Degree Plate Holder and Guide 6 Degree/0 Degree Plate Holder and Guide Freehand Guide Drill with Adjustable Stop Bone Tap with Adjustable Stop Bone Screw Driver Lock Plate Screw Driver Plate Bender Tack and Tack Holder

After determining the appropriate plate length, the plate is positioned on the anterior surface of the cervical spine. The cannula is seated into the plate at the correct cranial /caudal and convergent angle. Once the drill bit has been placed in the cannula and drilled, the tap is inserted into the cannula, the vertebral bodies are tapped and the screws are inserted. The screws are then tightened to ensure that they are seated below the surface of the plate. The cannula is removed. The lock plate is positioned over the bone screws and secured with lock plate screw driver.

Material: The components of the Blackstone Medical Inc. Anterior Cervical Plate System are manufactured from titanium 6Al-4V Eli alloy, as described by ASTM F-136.

The Blackstone Medical Inc. Anterior Cervical Plate System Indications: indicated for use in stabilizing the cervical spine (C2-C7) during the development of solid spinal fusion in patients with instability caused by the following:

- a) degenerative disc disease (ddd)* *Back pain of discogenic origin with degeneration of the disc as confirmed by history and radiographic studies.
- b) spondylothesis

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- c) fracture
- d) spinal stenosis
- e) deformities (i.e., scoliosis, kyphosis, lordosis)
- f ) tumor
- g) pseudoarthrosis
- h) revision of previous failed fusion surgery.
- The Blackstone Cervical Plate was compared to a Synthes Performance Cervical Plate per FEA analysis to determine the difference in stiffness and stress. The plates were similar in length. The Blackstone Plate was 288% stiffer than the Synthes Plate and the maximum stress associated with the Blackstone Plate was 41% less than the Synthes Plate.

### Substantial

The Blackstone Medical Inc. Anterior Cervical Plate System is Equivalence: equivalent to the CODMAN Anterior Cervical Plate System, SYNTHES Cervical Locking Plate System and SOFAMOR DANEK ORION Anterior Cervical Plate System.

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Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo is circular and contains the words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. In the center of the circle is an abstract symbol that resembles an eagle or bird in flight, composed of three stylized human profiles.

ਕਿ ਸੀ।

ਸਾਰਤ

Public Health Service

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

JUN 17 1998

Mr. Matthew Lyons President Blackstone Medical, Inc. 90 Brookdale Drive Springfield, Massachusetts 01104

Re: K974885 Anterior Cervical Plate System Regulatory Class: II Product Code: KWQ Dated: April 9, 1998 Received: April 10, 1998

#### Dear Mr. Lyons:

We have reviewed your Section 510(k) notification of intent to market the device system referenced above and we have determined the device system is substantially equivalent (for the indications for use stated in the enclosure) to device systems marketed in interstate commerce prior to May 28, 1976 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 your device system subject to the general controls provisions of the Act and the limitations identified below.

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. Note that labelinq or otherwise promotinq this device system for pedicular screw fixation/attachment would cause the device system to be adulterated under 501(f) (1) of the Act.

FDA identifies that any device system, if intended for use in pedicular screw fixation/attachment, except for some limited indications, would be found not substantially equivalent and would be a class III device under Section 513(f) of the Act. Class III devices are required to have an approved premarket approval (PMA) application prior to marketing. Accordingly:

- You may not label or in any way promote this device 1. system for pedicular screw attachment to, or fixation of the cervical, thoracic or lumbar vertebral column. Therefore, in order to prevent off-label promotion, the package insert must include the following statement,

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"WARNING : This device system is not approved for screw attachment or fixation to the posterior elements (pedicles) of the cervical, thoracic, or lumbar spine.";

- All labeling for this device system, including the 2. package label, must state that there are labeling limitations. The package insert must prominently state that the device system is intended for the specific use(s) described in the enclosure only; and
- 3. Pedicular screw fixation/attachment to the cervical, thoracic or lumbar vertebral column, except for limited indications, of any device system is considered investigational and may only be investigated as a significant risk device in accordance with the investigational device exemption (IDE) regulations under 21 CFR, Part 812. All users of the device system for pedicular screw fixation/attachment must receive approval from their respective institutional review boards (IRBs) and the Food and Drug Administration (FDA) prior to conducting an investigation.

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 Requlations, Title 21, Parts 800 to 895. ਰੇ substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirement, as set forth in the Quality System Requlation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic (QS) inspections, the Food and Druq Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in requlatory action. In addition, FDA may publish further announcements concerning your device in the Federal Reqister. 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.

FDA advises that the use of the subject device system and/or device components with any other device components but those identified in this 510(k) would require submission of a new 510(k) providing d cumentation of design, material, and labeling compatibility between the device components. Mechanical testing of a spinal system consisting of the subject device components and other device components, whether yours or other manufacturers', may also be required.

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#### Page 3 - Mr. Matthew Lyons

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

If you desire specific advice for your device on our labelinq regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at [phone]. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at [phone]. Also, please note the regulation entitled, "Misbranding by reference to one Begander on Choused, "Illustanding by 10rer general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number [phone] or [phone] or at its Internet address "http://www.fda.gov/cdrh/dsmamain.html".

Sincerely yours,

f coll

f 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): K974885

## Device Name: ANTERIOR CERVICAL PLATE SYSTEM

#### Intended Use/Indications:

The BLACKSTONE MEDICAL, INC. Anterior Cervical Plate System is to be used for anterior screw fixation of the cervical spine (C2-C7). The indications are as follows:

Indications:

Degenerative Disc Disease (ddd)* *Back pain of discogenic origin with degeneration of the disc as confirmed by history and radiographic studies. Spondylolisthesis Fracture Spinal Stenosis Deformities (i.e., scoliosis, kyphosis, lordosis) Tumor Pseudoarthrosis Revision of previous failed fusion surgery

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

Concurrence of CDRH, Office of Device Evaluation (ODE)

Prescription Use 1 (Per 21 CFR 801.109)

Or

Over-the-Counter Use

(Optional Format 1-2-96)

Division Sign-Off

Division of General Restorative Devices
510(k) Number K974885