Medical endoscope, e.g. for urology, laparoscopy or gynecology, has a rigid shank and an inner space sealed by an outer wall with a water-tight but not gas-tight seal

摘要

Filled with an inert viscous gel-like liquid (4), an inner space (IS) has a transparent window (18). The liquid changes its color if water gets in and has a boiling point above about 1,500 [deg]C. A rigid metal/hard plastic shank (2) has an elongated metal/hard plastic casing (3). Both the shank and the casing enclose the IS. An optical device fits in the IS with an elongated system tube (5).