US 12,233,610 B2
Device and method for radially strengthening polylactic acid tube
Li Wang, Shanghai (CN); ChenZhao Zhang, Shanghai (CN); Tao Cai, Shanghai (CN); and Junyi Wang, Shanghai (CN)
Assigned to Shanghai Bio-Heart Biological Technology Co., Ltd., Shanghai (CN)
Filed by SHANGHAI BIO-HEART BIOLOGICAL TECHNOLOGY CO., LTD., Shanghai (CN)
Filed on Jan. 5, 2023, as Appl. No. 18/093,408.
Application 18/093,408 is a continuation in part of application No. PCT/CN2021/083756, filed on Mar. 30, 2021.
Claims priority of application No. 202010672032.1 (CN), filed on Jul. 14, 2020.
Prior Publication US 2023/0150213 A1, May 18, 2023
Int. Cl. B29C 71/00 (2006.01); A61F 2/04 (2013.01); A61F 2/82 (2013.01); B29C 71/02 (2006.01); B29K 67/00 (2006.01)
CPC B29C 71/0072 (2013.01) [B29C 71/02 (2013.01); B29C 2071/027 (2013.01); B29K 2067/046 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for radially strengthening a polylactic acid tube, wherein the device comprises a tubular mold, a rotating blade and a distal blade; a rotating shaft of the rotating blade is arranged at an axial position of the tubular mold and can rotate relative to the axial position; one end of the rotating blade is connected to the rotating shaft, and the other end is movably connected to a first end of the distal blade; and a second end of the distal blade is connected to a control rod, opening and closing are achieved under the control of the control rod, and a joint between the distal blade and the rotating blade is a swing center.