US 12,433,695 B2
Stackable quick-release apparatus and surgical navigation system
Ye Liang, Changsha (CN); Canhua Jiang, Changsha (CN); Jiaji Zhang, Ningbo (CN); Guokun Zuo, Ningbo (CN); Tao Song, Ningbo (CN); Cong Xiao, Ningbo (CN); Yutian Zheng, Changsha (CN); Binzhu Wang, Changsha (CN); Shouhui Huang, Changsha (CN); and Ai Jian, Changsha (CN)
Assigned to XIANGYA HOSPITAL OF CENTRAL SOUTH UNIVERSITY, Changsha (CN); and NINGBO INSTITUTE OF MATERIALS TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCES, Ningbo (CN)
Appl. No. 18/994,638
Filed by XIANGYA HOSPITAL OF CENTRAL SOUTH UNIVERSITY, Changsha (CN); and NINGBO INSTITUTE OF MATERIALS TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCES, Ningbo (CN)
PCT Filed Jun. 5, 2024, PCT No. PCT/CN2024/097394
§ 371(c)(1), (2) Date Jan. 15, 2025,
PCT Pub. No. WO2024/255654, PCT Pub. Date Dec. 19, 2024.
Claims priority of application No. 202310699938.6 (CN), filed on Jun. 14, 2023.
Prior Publication US 2025/0262000 A1, Aug. 21, 2025
Int. Cl. A61B 34/20 (2016.01); F16B 7/20 (2006.01)
CPC A61B 34/20 (2016.02) [F16B 7/20 (2013.01); A61B 2034/2072 (2016.02)] 3 Claims
OG exemplary drawing
 
1. A surgical navigation system, comprising:
a rotation structure;
a plurality of cascade tubes; and
a plurality of stackable quick-release apparatuses,
wherein each stackable quick-release apparatus is configured to connect two adjacent cascade tubes, and comprises;
a connection rod, an abutment rod, and an elastic member,
wherein the connection rod and the abutment rod are respectively arranged at two ends of the adjacent cascade tubes; and
wherein a mounting groove is provided in an end surface of the connection rod, the elastic member is configured to be mounted in an inner wall of the mounting groove, and the abutment rod on a first one of the cascade tubes is configured to be inserted into the mounting groove of the connection rod on a second one of the cascade tubes and abut against the elastic member;
wherein the plurality of cascade tubes comprises a first bent tube and a second bent tube, the first bent tube and the second bent tube are of an L-shaped structure, the connection rod of one of the plurality of quick-release apparatuses is connected to an end of the first bent tube, the abutment rod of another one of the plurality of quick-release apparatuses is connected to an end of the second bent tube, and an end of the first bent tube away from the connection rod and an end of the second bent tube away from the abutment rod are connected by the rotation structure, to enable the first bent tube and the second bent tube to rotate relative to each other;
wherein the rotation structure comprises a connection head, a rotation bearing, a limiting portion, and a connection cap, the rotation bearing is sleeved on the end of the first bent tube away from the connection rod, and the limiting portion is mounted in an end portion of the first bent tube outside the rotation bearing; and
wherein the connection head is fixedly connected to the end of the second bent tube away from the abutment rod, a connection through groove matching the first bent tube, the rotation bearing, and the limiting portion is provided at an end portion of the connection head, and the end of the first bent tube away from the connection rod, the rotation bearing, and the limiting portion are configured to be mounted in the connection through groove; and
wherein the connection cap is configured to be fixed to the connection head facing the connection through groove by a screw and to limit the rotation bearing and the limiting portion in the connection through groove;
wherein a connection pin is arranged on an outer wall of each abutment rod;
wherein a connection groove matching the connection pin is provided in the inner wall of the mounting groove of each connecting rod, the connection groove comprises a first groove, a second groove, and a third groove, the first groove is provided in an axial direction of the connection rod, and an opening of the first groove is provided facing an access opening of the mounting groove; the second groove perpendicular to the first groove is connected to an end of the first groove away from the opening, the third groove is connected to an end of the second groove away from the first groove, and the third groove and the first groove are provided in the same direction;
wherein a cross section of the connection pin is of an isosceles trapezoid, a width of the first groove is greater than a longer base of the isosceles trapezoid, a width of the second groove is greater than a height of the isosceles trapezoid, and a shape of the third groove matches the cross section of the connection pin;
wherein a spring groove in communication with the mounting groove is provided in the inner wall of the mounting groove and inside each connection rod; and
wherein the elastic member comprises a connection spring, the connection spring is mounted in the spring groove, a first end of the connection spring is connected to an inner wall of the spring groove, and a second end of the connection spring is configured to connect to the abutment rod;
wherein the elastic member further comprises a connection plate, the connection plate is configured to move in the mounting groove, the first end of the connection spring is connected to the inner wall of the spring groove, and the second end of the connection spring is connected to the connection plate; and
wherein a groove is provided in a middle part on a side of the connection plate away from the connection spring, and the abutment rod is configured to press against an interior of the groove;
wherein the mounting groove of each connecting rod comprises an inner groove, a middle groove, and a limiting groove in communication with each other in sequence from inside to outside, and the inner groove, the middle groove, and the limiting groove are provided coaxially with the connection rod;
wherein a diameter of the inner groove is greater than a diameter of the middle groove, and a diameter of the limiting groove is greater than the diameter of the middle groove;
wherein the connection plate is configured to move in the inner groove, a diameter of the connection plate is greater than a diameter of the spring groove, less than the diameter of the inner groove, and greater than the diameter of the middle groove; and
wherein the connection groove is provided in an inner wall of the middle groove, a first step surface is provided at a junction between the limiting groove and the middle groove, and the opening of the first groove is provided facing the first step surface; and
wherein each abutment rod comprises a first rod and a second rod, the first rod is configured to connect to an end of the cascade tube, a diameter of the first rod matches the limiting groove, the second rod is configured to be arranged on an end of the first rod away from the cascade tube, a diameter of the second rod matches the middle groove, a second step surface is provided at a junction between the first rod and the second rod, the second step surface matches the first step surface, and the connection pin is arranged on an outer wall of the second rod;
wherein the abutment rod is configured to be inserted into the mounting groove and rotated, to enable the connection pin to move into the first groove and move from the first groove to the second groove; and the elastic member is configured to abut against the abutment rod, to enable the connection pin on the outer wall of the abutment rod to be engaged in the third groove; and
wherein a guide chamfer is provided in the second groove, and the guide chamfer is gradually inclined toward the end away from the opening in a direction from the first groove to the third groove.