DEGRADABLE STENT

• US 20170165089A1
• Filed: 02/27/2017
• Published: 06/15/2017
• Est. Priority Date: 08/29/2014
• Status: Abandoned Application

• Current Assignee: Dongguan Dianfu Product Design Co., Ltd.
• Original Assignee: Dongguan Dianfu Product Design Co., Ltd.
• Inventors: LI, Yangde
• Application Number:
  US15/444,223
• Publication Number:
  US 20170165089A1
• Time in Patent Office: Days
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable or resorptive
• CPC Class Codes: A61B 2017/1107 for blood vessels
• CPC Class Codes: A61B 2017/1135 End-to-side connections, e.g. T- or Y-connections
• CPC Class Codes: A61F 2/04 Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts A61F2/18, A61F2/20 take precedence; devices, other than stent-grafts, providing patency to, or preventing collapsing of, tubular structures of the body other than stent-grafts, e.g. stents A61F2/82; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/94 Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2210/0004 bioabsorbable
• CPC Class Codes: A61F 2230/0052 T-shaped
• CPC Class Codes: A61F 2230/006 Y-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/0069 cylindrical

Abstract

A degradable stent, including: a cylindrical magnesium alloy tube including an outer wall including barbs, and a magnesium alloy wire. In use, the cylindrical magnesium alloy tube is inserted in a broken or damaged lumen of human body, the barbs are inserted in the inner wall of the lumen, the magnesium alloy wire is wound around the magnesium alloy tube and the lumen, and the magnesium alloy tube is fixedly connected to the lumen of the human body.

Claims

1. A stent, comprising:

a cylindrical magnesium alloy tube comprising an outer wall comprising barbs; and

a magnesium alloy wire;

wherein

in use, the cylindrical magnesium alloy tube is inserted in a broken or damaged lumen of human body, and the barbs are inserted in an inner wall of the lumen;

the magnesium alloy wire is wound around the magnesium alloy tube and the lumen, and the magnesium alloy tube is fixedly connected to the lumen of the human body.

2. The stent of claim 1, wherein the magnesium alloy tube comprises a main body and at least one branch;

and the main body communicates with the branch.

3. The stent of claim 2, wherein a joint between the main body and the branch is coated with a magnesium alloy protection layer.

4. The stent of claim 2, wherein the main body and the branch form a T-shaped bifurcation, a Y-shaped bifurcation, or an amorphous bifurcation.

5. The stent of claim 1, wherein the barbs are disposed and staggered on the outer wall of the magnesium alloy tube and heads of the barbs are towards a middle part of the magnesium alloy tube.

6. The stent of claim 2, wherein the barbs are disposed and staggered on the outer wall of the magnesium alloy tube and heads of the barbs are towards a middle part of the magnesium alloy tube.

7. The stent of claim 3, wherein the barbs are disposed and staggered on the outer wall of the magnesium alloy tube and heads of the barbs are towards a middle part of the magnesium alloy tube.

8. The stent of claim 4, wherein the barbs are disposed and staggered on the outer wall of the magnesium alloy tube and heads of the barbs are towards a middle part of the magnesium alloy tube.

9. The stent of claim 5, wherein the barbs are conical, bottoms of the conical barbs are integrated with the magnesium alloy tube.

10. The stent of claim 6, wherein the barbs are conical, bottoms of the conical barbs are integrated with the magnesium alloy tube.

11. The stent of claim 7, wherein the barbs are conical, bottoms of the conical barbs are integrated with the magnesium alloy tube.

12. The stent of claim 8, wherein the barbs are conical, bottoms of the conical barbs are integrated with the magnesium alloy tube.

13. The stent of claim 5, wherein the barbs comprise a cylindrical body and a conical top, and the cylindrical body is integrated with the magnesium alloy tube.

14. The stent of claim 6, wherein the barbs comprise a cylindrical body and a conical top, and the cylindrical body is integrated with the magnesium alloy tube.

15. The stent of claim 7, wherein the barbs comprise a cylindrical body and a conical top, and the cylindrical body is integrated with the magnesium alloy tube.

16. The stent of claim 8, wherein the barbs comprise a cylindrical body and a conical top, and the cylindrical body is integrated with the magnesium alloy tube.

17. The stent of claim 1, wherein the magnesium alloy tube, the magnesium alloy wire, and the barbs are coated with a protection layer;

and the protection layer is a silver ion layer, or a biocompatible and anti-corrosion coating.

18. The stent of claim 1, wherein the stent comprises magnesium and at least one of iron, zinc, calcium.