Skin Electrode Patch (Exploded)

# CAD Prompt — Skin Electrode Patch (Ø30 mm, 0.98 mm stack) **Authoritative spec: use the 0.98 mm stack below. Ignore any 2.45 mm reference — that's for visual/functional intent only, not dimensions.** ## Parameters (mm) ``` ELECTRODE_OD=30.00 ACTIVE_OD=20.00 ADHESIVE_OD=30.00 ADHESIVE_ID=23.00 ADHESIVE_WIDTH=3.50 TOP_FILM_T=0.10 WICKING_T=0.30 CONDUCTIVE_T=0.05 CONTACT_T=0.25 ADHESIVE_T=0.20 RELEASE_T=0.08 PERFORATION_D=0.30 PERFORATION_PITCH=0.80 (grid confined to Ø20 mm, real through-holes) CONNECTOR_D≈9.50 CONNECTOR_H_MAX=1.60 CABLE_D=1.20 SERVICE_LOOP_ID=12.00 TOTAL STACK = 0.98 mm (excl. connector) ``` Origin = electrode center; +Z = top film side; all layers concentric. ## Layer Stack — 6 SEPARATE bodies, top→bottom (do not fuse) | # | Name | OD/shape | T (mm) | Material | |---|---|---|---|---| |1| TOP_FILM_MICROPERFORATED_PU | Ø30 disc | 0.10 | PU film | |2| DIRECTIONAL_WICKING_LAYER | Ø30 disc | 0.30 | Hydrophilic nonwoven | |3| AG_AGCL_CONDUCTIVE_LAYER | Ø20 disc | 0.05 | Ag/AgCl on PET | |4| CONDUCTIVE_SKIN_CONTACT_LAYER | Ø20 disc | 0.25 | Conductive hydrogel | |5| PERIMETER_ADHESIVE_RING | Ø30/Ø23 **annulus** | 0.20 | Acrylic PSA | |6| PET_RELEASE_LINER | Ø30 disc | 0.08 | PET release film | - Perforations only in L1, confined to Ø20 mm active zone. - L3/L4 capped at Ø20 mm (no extension into adhesive zone). - L5 is an annulus — nothing under the central Ø23 mm opening. - L6 stays a distinct removable body, not merged with adhesive. ## Connector + Cable - Snap connector at perimeter (~3 o'clock), Ø9.5 mm, H≤1.6 mm, treat as off-the-shelf placeholder with clear mounting interface (swappable later). - Sub-parts: housing, snap contact, strain relief, conductive tab (tab runs from L3 to connector, hidden in stack, no exposed sharp metal). - Cable: Ø1.20 mm sweep, tangential exit, smooth bend, ~6 mm tapered strain relief, service loop (ID≈12 mm) ~20–30 mm out, continuous sweep (no disconnected solid). ## Configs & Drawings - **Configs:** Assembled / Exploded (Z-separated, same center) / Flat (for manufacturing drawings). - **Drawings:** Top (Ø30/Ø20, perforation, connector loc) · Bottom (Ø23 opening, adhesive ring, connector) · Side (full thickness stack + connector height) · Exploded (numbered balloons 1–10). ## Tolerances General ±0.10 mm · Diameters ±0.20 mm · Perforation Ø ±0.05 / pitch ±0.10 · Layer T ±0.02–0.05 · Connector H ±0.20 · Cable D ±0.10 ## Rules Flexible laminate, not rigid part — no ribs/bosses/fasteners. Smooth edges on all sheet layers; 0.2–0.5 mm fillets on connector only. Engineering-clear appearance (not photoreal), representative (non-certified) material data. Export STEP with each component as an individual solid.

Parameters

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