Design Criteria & Commercial Medical Instrumentation

Question 1

What four categories need to be considered for design criteria?

Answer 1

1. Signal Factors
2. Environmental Factors
3. Medical Factors
4. Economic Factors

Question 2

Signal Factors

Answer 2

Sensitivity
Range
Differential/ absolute input
Input impedance
Transient or frequency response
Accuracy
Reliability
Linearity

Question 3

Environmental Factors

Answer 3

Specificity
Signal to noise ratio
Stability: temperature, humidity, pressure, acceleration, shock, vibration, radiation
Power requirements
Mounting size/shape

Question 4

Medical Factors

Answer 4

Invasive or noninvasive
Tissue sensor interface requirements
Material toxicity
Electrical safety
Radiation and heat dissipation
Patient discomfort
Biocompatibility

Question 5

Economic Factors

Answer 5

Cost
Availability
Warranty
Consumable requirements
Compatibility with existing equipment

Question 6

Feasibility Analysis

Answer 6

technical feasibility, how well it fits with the company’s current or planned product lines, manufacturing feasibility, business plan, market research