This is the 10297th most frequent Polish word.
chirurgicznej
"Chirurgicznej" means "surgical" in English, relating to surgery.
The word 'chirurgicznej' is used here as an adjective modifying 'pomocy' (assistance) to indicate that the assistance needed is surgical in nature.
Potrzebowałem pomocy chirurgicznej po wypadku.
I needed surgical assistance after the accident.
In this example, 'chirurgicznej' describes the 'quality' ('jakości') as being of a surgical standard.
Maska chirurgicznej jakości jest niezbędna.
A surgical-grade mask is essential.
Here, the term 'chirurgicznej' qualifies 'precyzji' (precision), suggesting the precision is akin to what is required in surgery.