US 11,857,177 B2
Method for suturing along path and apparatus thereof
Junqiang Su, Wuxi (CN); and Honglian Cong, Wuxi (CN)
Assigned to JIANGNAN UNIVERSITY, Wuxi (CN)
Filed by JIANGNAN UNIVERSITY, Wuxi (CN)
Filed on Nov. 16, 2022, as Appl. No. 18/056,140.
Claims priority of application No. 202111361111.1 (CN), filed on Nov. 17, 2021.
Prior Publication US 2023/0149012 A1, May 18, 2023
Int. Cl. A61B 17/04 (2006.01); A61B 17/00 (2006.01); A61B 17/06 (2006.01); A61F 2/07 (2013.01)
CPC A61B 17/0469 (2013.01) [A61B 17/0491 (2013.01); A61B 2017/00367 (2013.01); A61B 2017/047 (2013.01); A61B 2017/0475 (2013.01); A61B 2017/0479 (2013.01); A61B 2017/0496 (2013.01); A61B 2017/0498 (2013.01); A61B 2017/06076 (2013.01); A61F 2002/075 (2013.01); A61F 2240/001 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An apparatus for suturing along a path, comprising:
an inner strut,
a spiral suturing needle,
a driving mechanism,
a recovery mechanism,
a suture-taking-up mechanism, and
a suture-feeding mechanism; wherein
the inner strut is sheathed inside a sutured material to be sutured, and a metallic stent to be sutured is arranged in an artificial blood vessel, grooves are distributed on periphery with respect to an axial direction of the inner strut, and a path of the groove is consistent with a path of the metallic stent to be sutured, and a width of the groove matches an outer diameter of the spiral suturing needle;
embedded threaded channels are arranged in the grooves, which can constrain the spiral suturing needle to advance forward according to a track of the threaded channels;
the spiral suturing needle is an elastic retractable structure and a length of the spiral suturing needle without deformation is longer than a length of the path of the groove, and a suturing needle tip is arranged on a head portion of the spiral suturing needle and a suture-piercing hole is arranged on a tail portion of the spiral suturing needle;
the driving mechanism is detachably arranged at a rear end of the spiral suturing needle, the driving mechanism includes a driving wheel, a needle penetration rod and a variable aperture baffle, and an eccentric through hole is arranged on the driving wheel, one end of the needle penetration rod is fixedly connected to a center of the driving wheel, the variable aperture baffle is arranged on one side of the needle penetration rod, a distance between the variable aperture baffle and the driving wheel is equal to a compression length of the spiral suturing needle, the rear end of the spiral suturing needle passes through the eccentric through hole, and the whole of the spiral suturing needle is sheathed on the needle penetration rod, and is compressed behind the variable aperture baffle, and then a front portion of the spiral suturing needle keeps rotating out of the variable aperture baffle with the rotation of the driving wheel;
the recovery mechanism is detachably arranged at a front end of the spiral suturing needle, the recovery mechanism includes a recovery wheel on which an eccentric through hole is arranged and a thickness of which is equal to a distance between two adjacent helices of the spiral suturing needle without deformation, the front portion of the spiral suturing needle is passed through the eccentric through hole, the spiral suturing needle constantly pierces out of the eccentric through hole along with the rotation of the recovery wheel, and a rotating direction of the recovery mechanism is the same as the driving mechanism;
the suture-taking-up mechanism with a hook-shaped end is arranged along a path direction of the groove;
the suture-feeding mechanism is arranged at the tail portion of the spiral suturing needle, the suture-feeding mechanism includes a suture-winding shaft, a spring crimper and a connecting rod, two ends of the connecting rod are connected with the suture-winding shaft and the driving wheel respectively, and the spring crimper is arranged on the connecting rod.