| Wear Workshop 2000 The preliminary proposal for the Wear Workshop 2000 is completed. Organizers
anticipate additional support from AOA, ORS, the Hip Society, OSMA, NIST, and NIH. The
deadline for the NIH grant is October 1, 1999 and this proposal may be folded into the
5-year submission from AAOS.
Tentatively, the workshop is scheduled for June 9-11, 2000 however,
the date may be changed to the fall of 2000. The Device Forum facilitates the
Wear Workshop 2000.
In 1995, participants were assigned questions prior to the workshop
and discussed their answers during the proceedings of the weekend seminar. Subsequently, a
book was drafted by the end of the workshop and published five months later. Organizers
plan to post the contents of the 2000 workshop on the Internet allowing an administrator
to update information about implant wear in the future. The site will have print on demand
capability and hardcover books will also be available. AAOS may feature the resulting book
in their catalog.
MDR Discussion
The Medical Device Reporting task force studies issues of medical
device reporting (MDR) and post marketing surveillance (PMS). Originally, OSMA solicited
responses to a document that listed device failures which would be exempt from being
reported. The MDR task force reviewed the draft document and commented on the appendices
of internal fixation devices and hip and knee joint replacements. For instance, one
recommendation is that wear failures of greater than 8-10 years do not need to be
reported. The purpose of the guidance is to have user facilities submit the best data.
Traditionally, industry has over reported failures and user facilities have under
reported. Forum members commented that a registry would be more helpful. OSMA has not
discounted that possibility but realizes that a much more aggressive effort would be
needed.
NIH Technology Assessment Conference on Device Retrieval
NIH is planning a conference to be held January 10-12, 2000 titled
"Technology Assessment Conference on Improving Medical Implant Performance through
Retrieval Information: Opportunities and Challenges."
Website
The Forum website is now functional and response has been uniformly
positive. Additional summation reports will be posted and the web administrator will work
on links with other sites.
ASTM/FDA Seattle Seminar
The ASTM/FDA Seattle seminar for Biomedical Engineering and
Biological Implants committee members was successful. Members of ASTM and FDA each gave
presentations lasting approximately two hours.
ASTM/ISO Standards
The fall symposium topic is "Synthetic Bioabsorbable Polymers
for Implants." The meeting will be held November 16-19, 1999 in Kansas City, Mo. and
Biological Implants and Biomedical Engineering committees will plan to attend if budgets
allow. Biological Implants members have volunteered for the tissue- subcommittees of F-04.
- A standard for an osteoinductive protein will be ready to be
submitted for ASTM balloting in October/November 1999.
- Nominations have been made for the next ASTM F-04 chairman. Balloting
will take place in November and installation will be in January 2000.
International Standards Organization (ISO)
ISO TC150 will be held in Germany in the fall of 1999. Several
members of the Biomedical Engineering committee will be attending. It continues to be
exceedingly important to be present at ISO meetings due to the majority-voting consensus.
Unlike ASTM voting, ISO does not need to resolve negative votes. Hopefully in the future,
ISO members will increase their electronic communication abilities.
"Gordon Conference"
This conference is held over one week and is a basic science format
with a non-published outcome. The movement towards tissue engineering continues to grow.
Board of Directors Update
The Council on Education is working on a virtual simulator for
arthroscopic procedures. The Board does not find simulators to be a practical teaching
tool but the Council on Education is still investigating the possibilities.
The Corporate Advisory Council decided to support the development of
a basic course in clinical trials. This course will address issues concerning content, the
design of the trials, and examine funding sources. The Directors of Research and
Electronic Media will be working together on this project.
ORS will work on producing a workshop at Annual meeting 2000 to
address some of the issues surrounding clinical trials. ORS will design the course and the
Academy will implement it. OSMA may be contacted for funding on this course.
Orthopaedic Device Reference
The Orthopaedic Device Reference was originally published in book
format however, there is interest in producing an electronic version of it. The electronic
version would be a more complete source and could constantly be updated. This reference
would be very helpful in revision surgery and for radiological interpretation. The device
reference could also be used for archival purposes.
FDA Update
David Feigal, Jr., MD, MPH is the new CDRH center director. Dr.
Feigal is ex-Deputy Director of CBER in Drug Evaluation.
Reengineering efforts continue at CDRH. The average total time to
approve PMA’s has been cut by 25% from FY ’97 to FY ’98. Review times for
510(k)s continue to decrease in terms of the average total time to clearance and the
average FDA review times.
The Orthopedic and Rehabilitation Devices panel has recommended two
fairly significant approvals:
- Depuy Acromed Lumbar I/F Cage with VSP Spinal System
- Sofamor Danek, Interfix Interbody Fusion Cage
Bone Dowels
The Orthopedic and Rehabilitative Devices panel was scheduled to
discuss bone dowels on Tuesday, July 19th however, that meeting has been
postponed.
The FDA suggests that products like bone dowels, while banked human
tissues, may be more than minimally manipulated and therefore would be considered devices.
There are factors that help determine whether the FDA will need to consider a bone graft a
device. They include:
- More than minimal manipulation of the tissue
- Non-homologous or homologous intended use
- Claims or indications for use that are made
FDA recommends that the "Proposed Approach Use of Tissue"
published in the Federal Register in January 1997 be used for reference on tissue
guidelines.
Reclassifications
The reclassification for the shoulder joint metal/polymer/metal
nonconstrained or semi-constrained porous-coated uncemented prosthesis is available for
comment. The deadline on the comment period is August 26, 1999.
HCFA Speaker
Grant Bagley, MD, JD, Director of the Coverage and Analysis Group at
HCFA, spoke to the Forum on Monday, July 19, 1999. When the HCFA central office receives a
formal request, they may consider a device or service for a national coverage
determination. HCFA will generally limit coverage to those items and services that are
reasonable and necessary for the diagnosis and treatment of an illness or injury.
Under the new coverage process Dr. Bagley outlined for the Forum,
HCFA is actively holding public meetings, convening advisory panels, and performing
technology assessments to help the Coverage and Analysis group evaluate the scientific
evidence in the course of an analysis. In order for these advisory panels to be as
representative as possible, they consist of a multi-disciplinary group of medical
professionals and industry and consumer representatives. HCFA is also working to develop
guidance documents for industry to help them prepare for submitting formal requests for
coverage.
Once a formal request has been accepted, HCFA will respond within 90
days with one of the following options:
- National coverage decision without coverage limitations
- National coverage with coverage limitations
- Issue left to contractor discretion
- Referral to advisory committee
- Referral for a technology assessment
HCFA does have the ability to embrace new technology. For instance,
HCFA has taken a proactive approach to cryosurgery of the prostate even though it is a
very difficult procedure to learn. FDA approval is important to HCFA, although it’s
an entirely different issue than approving reimbursement. Off-label use is a significant
matter for concern for HCFA. A coordinated effort is in everyone’s best interest and
HCFA must consult FDA, CDC, among other groups of experts.
Cartilage Repair Guidance
Several members of the Forum continue to develop the "Guidance
Document for the Repair of Hyaline Articular Cartilage." This guidance is limited to
consideration of cartilage lesions of the knee.
The cartilage repair guidance will address the device description:
either chondro-potential cells, matrix or scaffold, or growth factor or another
biologically active factor, the intended uses and indication for use, and preclinical
data. The preclinical data will cover biocompatibility testing, bench/mechanical testing,
shelf life, sterilization, and animal testing.
Forum members questioned how much detail should be provided in the
guidance document and if exclusionary provisions should be included. It was decided that
histological information should be included: the smoothness of the cartilage, collagen
pattern, composition of the tissue, and a stain for glycos amino glycans. Members of the
Forum will provide opinions on the guidance draft.
Bone Graft Guidance
Members briefly reviewed the latest draft of the bone graft
substitution guidance. Authors have consulted the text "Animal Models in Orthopaedic
Research" by Drs. An and Friedman. The Forum will scrutinize the bone graft document
in depth at the January meeting. A few members of the Biological Implants committee may be
solicited to provide assistance on this document. It was decided a section on cytokines
should be included.
RSA
Members questioned what obligation physicians have to inform their
patients on tantalum beads. FDA considers RSA to be a research tool that should have
Institutional Review Board (IRB) involvement and patient protection measures in place.
Depending on the types of makers being used, the location of the markers, an their impact
on that prostheses. An IDE may be required. The Biomedical Engineering committee may work
on a statement on RSAs and implanting.
Biologics
Global harmonization efforts continue to be important. Products
registered in the United States as devices are pharmaceuticals in other countries.
- The Biological Implants committee is working on a statement/brochure
exploring the ethics of tissue and bone donation.
- The "Bone Grafting and Bone Graft Substitutes: Clinical
Alternatives for the New Millennium" symposium has been accepted by the planning
committee for annual meeting 2000.
Next meeting: FDAMA is not consistent with a
new judgement which ruled that non-approved uses of devices and drugs were appropriate as
long as uses were quantified in peer-reviewed publications. |