Suction stent, stent system, and method for sealing a leakage
The invention relates to a suction stent for introduction into a hollow organ of the human or animal body, preferably into the gastrointestinal tract, in particular the intestine, comprising a tubular hollow body which is open in the longitudinal direction and made of biocompatible material, the tubular hollow body having a fixed diameter at least in its central portion; and a porous shapeable material, preferably a sponge material, which is biocompatible and shapeable in the radial direction, the porous shapeable material radially sheathing the tubular hollow body at least in a section of the tubular hollow body. Further, the invention relates to a method for sealing a leakage, especially an anastomosis, of the hollow organ.
1. A suction stent for introduction into a hollow organ of a human or animal body, comprising:
a tubular hollow body which is open in the longitudinal direction and made of biocompatible material, the tubular hollow body having a longitudinally central portion, at least the longitudinally central portion of the tubular hollow body having a fixed diameter that is not expandable;
a porous shapeable material, which is biocompatible and shapeable in the radial direction, the porous shapeable material radially sheathing the tubular hollow body at least in a section of the tubular hollow body; and
a drainage element fixed at or in the porous shapeable material,
wherein at least the central portion of the tubular hollow body is made of an inexpandable material.
2. A suction stent according to claim 1 , wherein the tubular hollow body is a pipe or tube which is flexible with respect to its longitudinal axis.
3. A suction stent according to claim 2 , wherein the flexible tubular hollow pipe or tube is elastically bendable.
4. A suction stent according to claim 1 , wherein the porous shapeable material is provided along at least 50% of a longitudinal length of the tubular hollow body.
5. A suction stent according to claim 4 , wherein the porous shapeable material is provided along the full longitudinal length of the tubular hollow body.
6. A suction stent according to claim 1 , wherein the tubular hollow body is impermeable to water or to water and gas.
7. A suction stent according to claim 1 , wherein the tubular hollow body further has a peripheral portion that is radially expandable.
8. A suction stent according to claim 7 , wherein the radially expandable peripheral portion is at one or both end portions of the tubular hollow body.
9. A suction stent according to claim 1 , wherein the tubular hollow body is entirely made of an inexpandable material and has a peripheral portion with a funnel-shaped geometry.
10. A suction stent according to claim 9 , wherein the funnel-shaped peripheral portion is at one or both end portions of the tubular hollow body.
11. A suction stent according to claim 1 , wherein the porous shapeable material has a thickness in a discharged state between 4 and 12 mm.
12. A suction stent according to claim 1 , wherein a luminal inner diameter of the tubular hollow body is between 5 and 15 mm.
13. A suction stent according to claim 1 , wherein an outer diameter of the porous shapeable material in a discharged state is between 15 and 35 mm.
14. A suction stent according to claim 1 , wherein a ratio of an outer diameter of the porous shapeable material in a discharged state to a luminal inner diameter of the tubular hollow body is between 3 and 7.
15. A suction stent according to claim 1 , wherein the drainage element is a suction hose or a vacuum tube.
16. A suction stent according to claim 1 , further comprising at least one balloon-type component which is inflatable.
17. A suction stent according to claim 1 , further comprising a biocompatible mesh or tissue.
18. A suction stent according to claim 17 , wherein the biocompatible mesh or tissue is provided at a distal end portion of the suction stent.
19. A suction stent according to claim 1 , wherein the suction stent is configured for insertion into a gastrointestinal tract, or into an intestine.
20. A suction stent according to claim 1 , wherein the porous shapeable material is a sponge material.
21. A suction stent according to claim 1 , wherein the porous shapeable material is covered by a film or foil.
22. A suction stent according to claim 21 , wherein the balloon-type component is provided at an outer lateral surface of the suction stent.
23. A suction stent according to claim 21 , wherein the film or foil is perforated.
24. A system, comprising:
at least one suction stent according to claim 1 ; and
an adapter arranged for coupling the drainage element to a vacuum pump and/or a Redon bottle.