Patent ID: 9462936
Filing Date: 2016-10-11
CPC Classification: A61B

Claim Text:
1. A hysteroscope for insertion into a uterus, comprising: a shaft part having a first outer shaft and a second inner shaft, said first outer shaft having an approximately oval cross-sectional shape and defining a circumferentially closed channel therein, said second inner shaft being housed within said first outer shaft, said second inner shaft having an approximately triangular cross-sectional shape, said second inner shaft housing at least one channel and an optical system, said first outer shaft surrounding said second inner shaft in a first circumferential area of said approximately triangular cross-sectional shape fitting closely and matching to said first circumferential area, and surrounding said second inner shaft in a second circumferential area of said approximately triangular cross-sectional shape at a distance, thereby creating an instrument channel within said first outer shaft beside said second inner shaft, said first outer shaft and said second inner shaft being displaceable with respect to one another along said shafts, said instrument channel configured to receive instruments to carry out a surgical intervention in the uterus, wherein in a first position, said second inner shaft extends beyond a distal end of said first outer shaft, and an extending portion of said second inner shaft is configured to be inserted into a uterus without inserting said first outer shaft into the uterus, wherein in a second position said distal end of said first outer shaft comes to rest approximately at a distal end of said second inner shaft, wherein in said second position, both said first outer shaft and said second inner shaft are configured to be inserted together into the uterus, or said first outer shaft is configured to be moved over said second inner shaft already inserted into uterus; wherein a latching is provided for latching said optical system with said shaft part in said first position and in said second position, and wherein said latching, has two latching lugs separated axially from one another on said optical system and a catch on said shaft part.