US 12,453,578 B2
Trocar instrument and auxiliary device therefor
Joo-Hak Kim, Daejeon (KR); and Sang-Ha Oh, Daejeon (KR)
Assigned to CHUNGNAM NATIONAL UNIVERSITY HOSPITAL, Daejeon (KR); and THE INDUSTRY & ACADEMIC COOPERATION IN CHUNGNAM NATIONAL UNIVERSITY (IAC), Daejeon (KR)
Appl. No. 17/604,565
Filed by CHUNGNAM NATIONAL UNIVERSITY HOSPITAL, Daejeon (KR); and THE INDUSTRY & ACADEMIC COOPERATION IN CHUNGNAM NATIONAL UNIVERSITY (IAC), Daejeon (KR)
PCT Filed Apr. 17, 2020, PCT No. PCT/KR2020/005187
§ 371(c)(1), (2) Date Oct. 18, 2021,
PCT Pub. No. WO2020/213999, PCT Pub. Date Oct. 22, 2020.
Claims priority of application No. 10-2019-0045694 (KR), filed on Apr. 18, 2019.
Prior Publication US 2022/0175417 A1, Jun. 9, 2022
Int. Cl. A61B 17/34 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/3417 (2013.01) [A61B 2017/00424 (2013.01); A61B 2017/347 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An auxiliary device for a use in a trocar instrument including a trocar needle having a fastening groove formed on an outer circumferential surface thereof, comprising:
a body into which at least a portion of the trocar needle is inserted;
a hook connected to the body and configured to be inserted into the fastening groove of the trocar needle;
a first flange extending radially outward from one longitudinal end of the body; and
a second flange extending radially outward from the other longitudinal end of the body,
wherein the hook includes a fixing portion fixed to the body and a coupling portion extending from one end of the fixing portion and configured to be inserted into the fastening groove when the trocar needle is disposed inside the body,
wherein a gap is formed between the fixing portion and the coupling portion, and
wherein the hook is disposed between the first flange and the second flange, and the first flange, the second flange and a portion of the hook are exposed to an outside.