Abstract: An inspection system for inspecting a surgical instrument lumen at a cleaning station. The system includes a waterproof housing and a waterproof borescope assembly. The housing carries an image processor electronically connected to a display screen, and provides an imaging port. The borescope assembly includes a borescope, an image sensor and a connector assembly. The connector assembly is configured to selectively connect with the imaging port. When connected, signals from the image sensor are delivered to the image processor. A cleaning implement (e.g., wipe) is optionally provided with the borescope. During a cleaning operation, the inspection system is located in close proximity to cleaning liquid, affording the operator the ability to inspect lumen(s) of the surgical instrument throughout the cleaning operation without fear of damaging the inspection system. The borescope assembly can be disconnected from the housing and repeatedly sterilized or disinfected.