Evaluation of Medical Equipment/Implant Materials
Measurement of Static Strength and Fatigue Strength of Interconnection Mechanism of Spinal Rods
Measurement of interconnection strength of spinal implants and loosening resistance of parts
Outline of Static Strength and Fatigue Strength Measurement Technology
Spinal connection parts (hooks, screws, bands, etc.) and vertical elements (rods, plates) are combined in accordance with the manufacturer's instructions, and static tests and fatigue tests of the spinal implant structure are performed.
Connection Strength Measurement Conditions
| Corresponding standard | ASTM F1798 |
|---|---|
| Test environment | Constant temperature, constant humidity, in atmosphere, in saline (37 ± 2)°C |
| Test methods | Tensile test, compression test, bending test, torsion test |
| Max. load | 10 kN, 10 N-m |
| Max. cycle frequency | 16Hz |
| Max. number of cycles | 2.5 x 106 |
Connection Strength Measurement Methods
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①A-P test 
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③Bending/extension
moment test
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⑤Horizontal gripping capacity test 
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②Horizontal test 
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④Horizontal moment test 
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⑥Axial torque measurement test 
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