handheld sampling device 3d model

Design a handheld cylindrical smart sampling device ~150 mm long and 22 mm in diameter with a slight taper and a flat grip area. The front has a detachable conical tip that houses a removable 35 mm cartridge with snap-fit ridges and a small opening for a swab or filter. Include internal guide rails and a click-lock fit. Add a recessed 12 mm circular button at the center with a thin LED ring groove around it. Near the tip, place small circular indents and a ring band to represent sensors. The back end has a wider removable cap with a seam and small charging port cutout. Optimize all parts for 3D printing with minimal overhangs and press-fit assembly.