US 11,938,041 B2
Passage establishment device for posterior spinal fusion minimally invasive surgery
Yue Zhou, Shanghai (CN); Changqing Li, Shanghai (CN); Mingyan Michael Liu, Shanghai (CN); and Xing Liu, Shanghai (CN)
Assigned to SHANGHAI SANYOU MEDICAL CO., LTD., Shanghai (CN)
Appl. No. 17/273,735
Filed by SHANGHAI SANYOU MEDICAL CO., LTD., Shanghai (CN)
PCT Filed Jun. 26, 2019, PCT No. PCT/CN2019/093000
§ 371(c)(1), (2) Date Apr. 12, 2021,
PCT Pub. No. WO2020/048193, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. 201811044794.6 (CN), filed on Sep. 7, 2018.
Prior Publication US 2023/0285166 A1, Sep. 14, 2023
Int. Cl. A61F 2/46 (2006.01); A61B 17/02 (2006.01)
CPC A61F 2/4611 (2013.01) [A61B 17/0218 (2013.01); A61B 17/025 (2013.01); A61B 2017/0256 (2013.01); A61F 2002/4635 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A passage establishment device for posterior spinal fusion minimally invasive surgery, wherein a front end of the passage establishment device extends into a spine, wherein the device comprises:
a tube (600), wherein an interior of the tube (600) includes a through hole (601) penetrating both axial ends of the tube (600), and a wall of the tube (600) includes an opening portion (610);
wherein a plurality of elongate holes (640) is formed on the wall at a front part of the tube (600);
wherein the tube (600) comprises two tube body side portions (602) opposite to each other,
wherein the two tube body side portions (602) are connected by a tube body connecting portion (603) at one side,
wherein an interval between the two tube side portions (602) at the other side forms the opening portion (610); and
wherein the tube body connecting portion (603) and each of the two tube body side portions (602) include at least one of the plurality of elongate holes (640), respectively.