I'd say

or autoclavable HD optical systems

It offers a wide range of sophisticated, autoclavable endoscopes. The special single cable technology makes the surgeon’s work easier and more flexible. Nowadays, it is difficult to imagine conducting examinations and surgeries without the so called “keyhole technique”.

--------------------------------------------------
Note added at 1 Stunde (2019-07-05 15:04:09 GMT)
--------------------------------------------------

An endoscopy (looking inside) is used in medicine to look inside the body.[1] The endoscopy procedure uses an endoscope to examine the interior of a hollow organ or cavity of the body. Unlike many other medical imaging techniques, endoscopes are inserted directly into the organ.

There are many types of endoscopes.

(Wiki)

--------------------------------------------------
Note added at 1 Stunde (2019-07-05 15:05:31 GMT)
--------------------------------------------------

An endoscope is an illuminated optical, typically slender and tubular instrument (a type of borescope) used to look deep into the body and used in procedures called an endoscopy. "Endo" is Greek for "within" while "scope" comes from the Greek word "skopos" meaning to target or look out. It is used to examine the internal organs like the throat or esophagus. Specialized instruments are named after their target organ. Examples include the cystoscope (bladder), nephroscope (kidney), bronchoscope (bronchus), arthroscope (joints) and colonoscope (colon), and laparoscope (abdomen or pelvis).[1] They can be used to examine visually and diagnose, or assist in surgery such as an arthroscopy.