?????: ?????? ???? ????? ????? ???????? ??? ??????? ?? ???? ????? ?????? ???????? ?????????? ???????? ?????? ??????? ?? ????? ??????? ??????.
????
Ø ????? ?????? ?????? ??????? J ?? ???????? J ??? ???????? ??????? ?????? ????????? ???????? ??????.
Ø ??????? ???????? ????????? ??????? ????? ????? ????? ?????????.
Ø ????? ?????? ?????? ?? ????????? ????????? ??? ????? ???????: Fr 4.0? 4.5? 5.0? 6.0? 7.0? 8.0? ???????: 12? 15? 18? 20? 22? 24? 26? 28 ??? ???? ?????? ?????????? ???????? ??????? ????????? ????? ??? ?????? ?????? (1Fr≈0.33mm).
Ø?????? ???? ?????? ???? ???????? ???????? ????????. ????? ??????? ???????? ?????? ?????? ????????? ??? ?? ???? ????? ????? ???????? ???????? ??? ???? ??? ???? ????? ????? ???????.
*??? ???????? ??? ??? ?????? ?? ????? ????? ?? 30 ?????.