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Reviewers Guidance Checklist
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This guidance was written prior to the February 27, 1997 implementation of FDA's Good Guidance Practices, GGP's. It does not create or confer rights for or on any person and does not operate to bind FDA or the public. An alternative approach may be used if such approach satisfies the requirements of the applicable statute, regulations, or both. This guidance will be updated in the next revision to include the standard elements of GGP's.
Appendix 1. The description of the rod under reiew and the predicate device should include the following (see ASTM F1264-96):
Appendix 2. Standards which may be consulted include the following:
Appendix 3. Materials and design description of each component
Appendix 4. Organization of a summary of a mechanical bench testing report in a 510k review memo
Appendix 5. Bibliography
Appendix 6. Sample review memo of an external fixation system
I. GENERAL CONTENT OF A REVIEW
II. DESCRIPTION OF PREDICATE(S) AND DEVICE UNDER REVIEW
III. COMPARE THE PREDICATE(S) AND DEVICE UNDER REVIEW
IV. DEVICE TESTING
The reviewer is responsible for assessing the information required to determine safety and effectiveness based on the particular design parameters of the device under review. The following are examples of tests that have been required for previous devices submitted to FDA. However, new information may suggest a different approach. The reviewer should justify test requirements and conclusions based on supportive references. If testing of the device is necessary, a summary of the methods and results should be organized as suggested in appendix 4.
V. BIBLIOGRAPHY
Provide a bibliography if references are given (e.g., appendix 4).
Appendix 1. | The description of the rod under review and the predicate device should include the following (see ASTM F1264-96): |
lengths
longitudinal curvature
diameter
inner (if not solid)
outer
thickness
cross sectional shape (e.g., circular, fluting, open, closed, slotted, width of opening)
fixation mechanism (e.g., interference, elastic deformation of the device, bone screws)
number of fixation points
orientation of the open section and other asymmetries in the sagittal and coronal planes (e.g.: curved, bent ends, straight, s-shaped, stepped)
potential critical stress concentrators
number to be implanted
design of ends (e.g., flat, pointed, blunt, threaded, round)
insertion/extraction mechanism
Appendix 2. | Standards which may be consulted include the following: |
ASTM F-339: |
Standard Specification for Cloverleaf Intramedullary Pins |
ASTM F-453: |
Specification for Hooked Intramedullary Pins |
ASTM F-454: |
Specification for Intramedullary Pins |
ASTM F-455: |
Specification for Intramedullary Nails with a Solid Cross-section |
ASTM F-1264: |
Standard Guide for Mechanical Performance Considerations for Intramedullary Fixation Devices |
ISO 5837-1: |
Implants for Surgery - Intramedullary Nailing Systems - Part 1: Intramedullary Nails with Cloverleaf or V-shaped |
ISO 5537-2 |
Implants for Surgery - Intramedullary Nailing Systems - Part 2: Medullary Pins |
Appendix 3. | Materials and design description of each component |
For each part of each component of both the device under review and, as much as possible, the predicate device, provide the following:
names
model numbers
size ranges
identification on a photo or drawing of the assembled construct, indicating the proximal and distal attachment mechanisms and indicating if the attachments are to cortical or cancellous bone
drawing showing where the part fits with other parts of the device and tissues
types of interfaces (i.e., articulating, fixed mating parts, coatings, tissues)
detailed engineering drawing with tolerances (as necessary)
material composition, to include the following:
sources of more detailed information (e.g., other FDA document submission numbers or other references)
description of the material (e.g., 316 LVM stainless steel), including processed condition (e.g. annealed, 20% cold worked)
name and number of applicable voluntary standards
differences between the final product and the standard
trade names (optional)
manufacturers (optional)
new processing methods, if any
Appendix 4. | Organization of a summary of a mechanical bench testing report in a 510k review memo |
The review memo should provide a summary of each mechanical bench testing report submitted in the 510k. This should include a list of the essential test parameters and results as well as the persons/labs generating the data. All reviews should be organized the same way. For example, a summary of each report should include (where applicable), but is not limited to the following:
REFERENCEName
Address
Phone Number
MECHANICAL LOADING
Direction | (e.g., normal to the longitudinal axis) |
Mode | (e.g., 3 point bending) |
Load point | (e.g., at the center of the rod) |
Magnitude | (e.g., 10 lbs min., 100 lbs max.) |
Time | (e.g., presoaked 10 days) |
Rate | (e.g., 1 Hz) |
Cycles | (e.g., 106) |
TEST SETUP
Appendix 5. | Bibliography |
Test standards for intramedullary rods include the following:
ASTM F-383: Practice for Static Bend and Torsion Testing of Intramedullary Rods
ASTM F-1264: Standard Guide for Mechanical Performance Considerations for Intramedullary Fixation Devices
Draft ASTM Standard Definitions of Terms for Sizing of Intramedullary Fixation Devices (IMFD's) and Associated Instrumentation
Draft ASTM Standard Practice for Measuring Intramedullary Fixation Devices (IMFD's) and Reamer Dimensions
Draft ASTM Standard Practice for Low Cycle Intrinsic Bending Fatigue Testing of Intramedullary Fixation Devices (IMFD's)
Draft ASTM Standard Practice for Static Testing Under Combined Axial Compression and Bending Loads for Proximal and Distal Cortical Locking Mechanisms of Intramedullary Fixation Devices (IMFD's)
Draft ASTM Standard Practice for Low Cycle Fatigue Testing Under Combined Axial Compression and Bending Loads for Proximal and Distal Cortical Locking Mechanisms of Intramedullary Fixation Devices (IMFD's)
Draft ASTM Standard Practice for Static Intrinsic Bending, Torsion, and Radial Compliance Testing of Intramedullary Fixation Devices (IMFD's)
Appendix 6. | Sample review memo of an external fixation system |
5 1 0 (k) R E V I E W
DATE |
May 26, 1998 |
FROM |
KEN MCDERMOTT |
TO |
File |
DOCUMENT # |
Kxxxxxx |
SPONSOR |
Xxxxxx |
DEVICE NAME |
Xxxxxxx Nail |
CLASS |
HSB |
DISEASE/USE |
fracture of the humerus |
REASON FOR APPLICATION New device.
DECISION |
SE The most important factors affecting this decision include the following: |
DESCRIPTION OF EACH COMPONENT UNDER REVIEW IN THIS 510K
COMPONENT 1 |
4 mm interlocking screw |
||
MATERIALS |
Ti-6Al-4V |
STANDARD # |
ASTM F 136 |
INTERFACES |
ARTICULATIONS none |
MATING PARTS IM rod |
|
TISSUE FIXATION bone |
COATINGS none |
COMPONENT 2 |
IM rod |
||
MATERIALS |
Ti-6Al-4V |
STANDARD # |
ASTM F 136 |
INTERFACES |
ARTICULATIONS none |
MATING PARTS screw |
|
TISSUE FIXATION none |
COATINGS none |
ROD DESIGN FEATURES
straight
lengths: 200-300 mm
solid
diameter: 8 mm
cross sectional shape: oval
fixation methods: 2 bone screws
asymmetries:
STERILITY |
gamma radiation |
FILE |
bonfix/im |
COMPARABLE PREDICATE DEVICES
PREDICATE DEVICE I REVIEWED RECENTLY
DOCUMENT # |
Kxxxxxx |
SPONSOR |
Xxxxxxxxxx |
DEVICE NAME |
Xxxxxx Intramedullary Rod System |
CLASS |
HSB |
DISEASE/USE |
Fracture of the proximal humerus |
REASON FOR APPLICATION New device.
DECISION |
SE This device has equivalent intended use, conforms to similar standards, and has equivalent technological characteristics compared to predicate devices |
COMPONENT 1 |
IM rod |
||
MATERIALS |
Ti-6Al-4V |
STANDARD # |
ISO 11137 |
INTERFACES |
ARTICULATIONS none |
MATING PARTS capscrew |
|
TISSUE FIXATION none |
COATINGS none |
length: 155 mm
straight
diameter : 9-15 mm
solid
circular cross sectional shape
10 flutes and 3 slots run from the distal end to the screw holes.
fixation method: interference or bone screws
number of fixation points: proximally (at the humeral head) there are 4 screw holes and 4 suture holes.
a single rod is implanted in the canal
blunt distal end
flat proximal end with threaded insertion/extraction hole
COMPONENT 2 |
xxxxxxxx |
||
MATERIALS |
Ti-6Al-4V |
STANDARD # |
ISO 11137 |
INTERFACES |
ARTICULATIONS none |
MATING PARTS IM rod |
|
TISSUE FIXATION none |
COATINGS none |
||
DESIGN |
Prevents tissue from entering threaded hole which attaches to insertion/ |
OTHER PREDICATE DEVICES (see attached)
The differences in the design (compared to predicate devices) do not raise new types of safety and effectiveness questions (risks) not seen before in similar devices. The same risks occur in both devices.
TECHNOLOGICAL CHARACTERISTICS:
There are no important differences between the device submitted in this 510k and similar devices which would require testing. A 510(k) indications for use statement, truthful and accuracy statement and summary of safety and effectiveness were submitted as required in the Safe Medical Devices Act.
REVIEWED BY:________________Xxx | Xxxxxxxxx |
ATTACHMENTS:
design drawings
predicate device
intended use statement
CONTACT HISTORY:
Uploaded on August 13, 1998
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