US 11,980,433 B2
In-vivo micro-robot for nerve stretching
Lihai Zhang, Beijing (CN); Rui Song, Beijing (CN); Ye Peng, Beijing (CN); Fuxin Du, Beijing (CN); Shuwei Zhang, Beijing (CN); Yanqiang Lei, Beijing (CN); and Gongzi Zhang, Beijing (CN)
Assigned to THE FIRST MEDICAL CENTER CHINESE PLA GENERAL HOSPITAL, Beijing (CN); and Shandong University, Jinan (CN)
Filed by THE FIRST MEDICAL CENTER CHINESE PLA GENERAL HOSPITAL, Beijing (CN); and Shandong University, Jinan (CN)
Filed on Oct. 24, 2022, as Appl. No. 17/971,663.
Application 17/971,663 is a continuation of application No. PCT/CN2021/109891, filed on Jul. 30, 2021.
Prior Publication US 2023/0045225 A1, Feb. 9, 2023
Int. Cl. A61B 34/32 (2016.01); A61B 17/00 (2006.01)
CPC A61B 34/32 (2016.02) [A61B 2017/00345 (2013.01); A61B 2017/00734 (2013.01); A61B 2017/00876 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An in-vivo micro-robot for nerve stretching, comprising a channel, and a first movable part and a second movable part located at the channel, wherein the first movable part is disposed to be movable along the channel, the first movable part sleeves the second movable part and is used for driving the second movable part to move along the channel, and the second movable part is sized and configured to be connected to a nerve to be stretched to fix the nerve to be stretched;
wherein the second movable part comprises a mandrel, a rear baffle of a spring assembly, a permanent magnet, a rear support, a tail and a suture loop;
the mandrel is concentrically disposed in the channel; and a rear end of the mandrel is sequentially sleeved with the rear baffle of the spring assembly, the permanent magnet, the rear support and the tail, the rear baffle of the spring assembly, the permanent magnet, the rear support and the tail are in interference fit with the mandrel, the suture loop is connected to the tail, and the suture loop is configured to be connected to the nerve to be stretched.