Chapter 19 Manufacturing and Quality Control
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Transcript Chapter 19 Manufacturing and Quality Control
Chapter 19
Manufacturing and
Quality Control
Design of Biomedical Devices and
Systems
By
Paul H. King
Richard C. Fries
GMP: History
Good
Manufacturing Practices - Series of
requirements that prescribed the facilities,
methods, and controls to be used in
manufacturing, packaging, and storage of
medical devices
Medical Device Amendments of 1976
Unchanged since 1978
Current Good Manufacturing
Practice (CGMP)
•Assure medical devices are compatible with specifications for
quality systems contained in international quality standard ISO
9001.
Quality system
requirements: design,
purchasing, and
servicing controls
Clarify record keeping
requirements for device
failure and complaint
investigations
Clarify requirements for
qualifying, verifying, and
validating processes
and specification
changes
Clarify requirements for
evaluating quality data
and correcting quality
problems
Design Controls
Lack
of = Major cause of device recalls
Intrinsic quality established during design
phase
FDA concerned that current regulations
don’t provide an appropriate level of
assurance
Purchasing controls
Unacceptable components = recalls due to
device failures
Unacceptable components due to failure of
manufacturer to adequately define and establish
requirements
Purchasing of components, finished devices,
packaging, labeling, and manufacturing
materials must be conducted with same level of
planning, control, and verification as internal
activities
Servicing Controls
Maintenance
and repair data provide
insight into adequacy of the performance
of the device
Use to evaluate and monitor adequacy of
device design, quality system, and
manufacturing process
Use as part of overall device experience
data in manufacturer’s quality system
Design for Manufacturability (DFM)
Assures
that a design can be repeatedly
manufactured while satisfying the
requirements for quality, reliability,
performance, availability, and price.
Less costly due to
Simpler design with fewer parts
Simple production processes
Higher quality and reliability
Easier to service
DFM Process
Eliminate
nonfunctional parts
Reduce functional parts
Process for a defect rate of no more than
a few parts per million
Design for Assembly (DFA)
Overall
Design Concept
Component Mounting
Test Points
Stress Levels and Tolerances
Printed Circuit Boards
Miscellaneous
Manufacturing Process
Pre-production
Pilot
activity
run build
Production run
Delivery to customer
Pre-Production Activity
Selection
of Suppliers
Develop Pilot Run plan
Develop Manufacturing Strategy
Production plan
Quality plan
Test plan
Materials plan
Supplier plan
Pilot Run Build
Validate manufacturing process against objectives set
forth in manufacturing strategy and product
specification
Standard cost
Product quality
Documentation
Tooling
Training
Process control
Validates supplier plan and contracts
Internal failure analysis and corrective action
Production Run
Produce
high quality product on time,
while continuing to fine tune the process
1st order manufactured
Verification of Product cost
Customer Delivery
1st production units to customer
Refine manufacturing process based on
first build
Monitor field unit performance to correct
any problems
Deliver