Best practices for designing spiral and slotted laser cut patterns for optimal flexibility and manufacturability.
| Metric | Typical Range | Impact on Procurement |
|---|---|---|
| Minimum Kerf | 10-20 um | Defines how fine the pattern can be. |
| Pattern family | Continuous spiral, interrupted spiral, slot, window, jigsaw | Each pattern shifts the balance between flexibility, torque, pushability, and kink resistance. |
| Transition control | Pitch, bridge width, uncut length, and distal stiffness ramp | Most catheter failures occur where stiffness changes too abruptly. |
| Decision Factor | Confirm Before Quote | Buyer Impact |
|---|---|---|
| Desired mechanical behavior | Flexibility, pushability, torque response, kink resistance, and compression limits. | Helps choose a pattern family instead of copying a slot geometry without function context. |
| Pattern manufacturability | Kerf, bridge width, slot end radius, pitch changes, and minimum uncut ligament. | Reduces cut-edge defects, weak bridges, and fatigue initiation in prototype samples. |
| Post-processing requirement | Electropolishing, passivation, oxide removal, cleaning, and inspection magnification. | Turns a laser-cut tube from a geometry sample into an assembly-ready component. |
Yes, using 5-axis laser cutting equipment.
Use continuous spiral when flexibility dominates and compression load is low; consider interrupted spiral or slots when torque and pushability must be preserved.
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