Extravascular stent for kidney transplantation

Abstract

The invention discloses an extravascular stent for kidney transplantation, and belongs to the field of kidney transplantation surgeries. The extravascular stent comprises a telescopic part, and the telescopic part comprises two telescopic plates; the ends, close to each other, of the two telescopic plates are in threaded installation with a bidirectional threaded rod at the same time, and two support shields are arranged on the lower side of the telescopic part; the two supporting shields are both adjusted and controlled through a driven mechanism, the two driven mechanisms are jointly in transmission fit with a driving mechanism, each supporting shield comprises two arc-shaped pieces which are matched with each other, and the top end of each arc-shaped piece is rotatably installed on thebottom wall of the telescopic plate. The overall size of the stent can be conveniently adjusted, meanwhile, the two supporting shields are arranged and can be crossed with each other, so that the internal space of the supporting shields can be adjusted according to needs, renal artery or renal vein can be well limited and bound, and therefore the stent has a good operation effect and is suitable for popularization and application. And the complex actual operation requirements can be better met.

Description

technical field [0001] The invention relates to the technical field of kidney transplantation, in particular to an extravascular stent for kidney transplantation. Background technique [0002] During kidney transplantation, the renal artery and renal vein need to be sutured. Because the renal artery and renal vein are located in the deep part of the pelvis, and the transplanted kidney is not fixed under the abdominal wall, it may cause the renal artery to become angulated and affect the blood supply of the transplanted kidney. At present, the conventional method is to place a ball of bio-cotton between the renal artery and the renal vein to form an arc to support and isolate the renal artery and deep vein, but this method has a small supporting force and is not effective ideal. [0003] After retrieval, Chinese Patent No. CN 208710184 U discloses an extravascular stent for kidney transplantation, which solves the problem of poor isolation between the renal artery and renal ...

AI Technical Summary

Problems solved by technology

[0002] During kidney transplantation, the renal artery and renal vein need to be sutured. Because the renal artery and renal vein are located in the deep part of the pelvis, and the transplanted kidney is not fixed under the abdominal wall, it may cause the renal artery to become angulated and affect the blood supply of the transplanted kidney. At present, the conventional method is to place a ball of bio-cotton between the renal artery and the renal vein to form an arc to support and isolate the renal artery and deep vein, but this method has a small supporting force and is not effective ideal

[0003] After retrieval, Chinese Patent No. CN 208710184 U discloses an extravascular stent for kidney transplantation, which solves the problem of poor isolation between the renal artery and renal static support in the existing kidney transplantation, which includes an I-shaped stent , the bracket includes two parallel flat plates, the two flat plates are fixedly connected by the support plate, the support is rotatably provided with a horizontal screw, the two ends of the screw respectively pass through the support plate and the screw threads are opposite, and the threads at both ends of the screw are threaded It is connected with a nut that slides horizontally, and an arc-shaped grid frame is fixed on the outer end of each nut; a guard plate is hinged at the left and right ends of each plate, and a telescopic bracket is fixed on the upper and lower ends of each nut. Telescopic rod, a guard on the same side is slidably connected to a telescopic rod

[0004] The above-mentioned extravascular stent in the prior art still has the following disadvantages in actual use: when the guard plate in the existing stent opens and closes the grid frame, the adjustment of the space in the opening of the guard net cannot be realized, that is, the guard plate cannot be adjusted according to actual needs. The size of the mesh operation space has limitations; in addition, the entire stent cannot adjust its own size, the distance between the renal artery and the renal vein cannot be adjusted conveniently, and it cannot meet the practical needs of diversity, so we propose a new Extravascular Stents for Kidney Transplantation

Images