US Patent 7871006 Trigger unit for a wearable data acquisition device

A detachable trigger unit for a wearable device (e.g., a wearable data acquisition device) includes (i) a trigger housing having a triggering mechanism for engaging a housing unit of the device; (ii) a strap housing detachably coupled to the trigger housing; and (iii) a protective membrane coupled to the strap housing and protecting a body part of a user. The trigger housing includes a first connector for receiving a corresponding second connector of the housing unit. The housing unit is rotatable about an axis substantially perpendicular to a bottom surface thereof.