US 12,137,964 B2
End tool of surgical instrument and electric cauterization surgical instrument comprising same
Jung Joo Lee, Seongnam-si (KR); Heejin Kim, Seongnam-si (KR); and Dongkyu Jang, Seongnam-si (KR)
Assigned to LIVSMED INC., Seongnam-si (KR)
Filed by LIVSMED INC., Seongnam-si (KR)
Filed on Jun. 8, 2023, as Appl. No. 18/207,640.
Application 18/207,640 is a continuation of application No. PCT/KR2022/004705, filed on Apr. 1, 2022.
Claims priority of application No. 10-2021-0022973 (KR), filed on Feb. 20, 2021; application No. 10-2021-0022984 (KR), filed on Feb. 20, 2021; and application No. 10-2021-0069611 (KR), filed on May 29, 2021.
Prior Publication US 2023/0389979 A1, Dec. 7, 2023
Int. Cl. A61B 18/14 (2006.01); A61B 34/00 (2016.01); A61B 17/29 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1445 (2013.01) [A61B 34/71 (2016.02); A61B 2017/2933 (2013.01); A61B 2017/2938 (2013.01); A61B 2018/00595 (2013.01); A61B 2018/1455 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An end tool of a surgical instrument, the end tool comprising:
a first jaw and a second jaw that are rotatable independently from each other;
a first jaw pulley coupled to the first jaw and formed to be rotatable about a first axis;
a second jaw pulley coupled to the second jaw, formed to be rotatable about an axis that is substantially same as or parallel to the first axis, and formed to be spaced a certain distance from the first jaw pulley;
a blade assembly which includes a blade moving between a proximal end and a distal end of the first jaw and a blade pulley coupled to the blade, and of which at least a part is formed between the first jaw pulley and the second jaw pulley;
a blade wire that is at least partially in contact with the blade assembly and transfers a driving force required to move the blade to the blade;
an end tool hub including a first jaw pulley coupling portion, a second jaw pulley coupling portion, and a guide portion, wherein the first jaw pulley coupling portion and the second jaw pulley coupling portion are formed to face each other and the guide portion connects the first jaw pulley coupling portion and the second jaw pulley coupling portion;
a blade auxiliary pulley arranged between the blade pulley and the guide portion and formed to be rotatable about a second axis parallel to the first axis;
a first jaw auxiliary pulley arranged between the first jaw pulley and the guide portion and formed to be rotatable about the second axis;
a second jaw auxiliary pulley arranged between the second jaw pulley and the guide portion and formed to be rotatable about the second axis,
wherein the blade auxiliary pulley is arranged between the first jaw auxiliary pulley and the second jaw auxiliary pulley.