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US 12,714,557 B2Granted
Self-expandable stent and set of stents
AssigneeP+F Products + Features GmbH
InventorsKatharina Kiss, Guilherme Agreli
Life of this patent
Estimating the term…
Abstract
A self-expandable stent has a dry valve made of bovine pericardium arranged at a proximal end thereof, a skirt surrounding the dry valve at the proximal end of the stent and made of one of bovine pericardium and polyester. The dry valve is configured to be rehydrated when placed in contact with a solution, and the stent includes eyelets arranged at the proximal end of the stent for fixing the stent at a point of interest, with the point of interest being one of the vena cava superior and the vena cava inferior.
Claims20
A self-expandable stent comprising:
- a dry valve made of dry bovine pericardium arranged at a proximal end of the stent;
- and
- a skirt surrounding the dry valve at the proximal end of the stent and made of one of dry bovine pericardium and polyester,
- the dry valve configured to be rehydrated when placed in contact with a solution,
- the stent comprising eyelets arranged at the proximal end of the stent to fix the stent at a point of interest, with the point of interest comprising one of a vena cava superior and a vena cava inferior,
- the dry bovine pericardium being formed by a method comprising:
- soaking of the dry bovine pericardium treated with a crosslinking agent with a saline solution:
- contacting the soaked bovine pericardium with an aqueous solution comprising hydrogen peroxide;
- contacting the bovine pericardium with an aqueous solution comprising a phosphate buffered saline and ethylenediaminetetraacetic acid;
- contacting the bovine pericardium with a solution comprising glycerol, ethanol and ethylenediaminetetraacetic acid;
- and
- contacting the bovine pericardium with a glycerol solution.
9 more elements
A set of stents comprising:
- two self-expandable stents,
- each of the two self-expandable stents having;
- a dry valve made of dry bovine pericardium arranged at a proximal end of the stent, and a skirt surrounding the dry valve at the proximal end of the stent and made of one of dry bovine pericardium and polyester, the dry valve configured to be rehydrated when placed in contact with a solution, and eyelets arranged at the proximal end of the stent to fix the stent at a point of interest such as a vena cava superior or inferior,
- a first stent of the two self-expandable stents configured to be placed in the vena cava superior, and
- a second stent of the two self-expandable stents configured to be placed in the vena cava inferior,
- the dry bovine pericardium of each of the two self-expandable stents being formed by a method comprising:
- soaking of the dry bovine pericardium treated with a crosslinking agent with a saline solution;
- contacting the soaked bovine pericardium with an aqueous solution comprising hydrogen peroxide;
- contacting the bovine pericardium with an aqueous solution comprising a phosphate buffered saline and ethylenediaminetetraacetic acid;
- contacting the bovine pericardium with a solution comprising glycerol, ethanol and ethylenediaminetetraacetic acid;
- and
- contacting the bovine pericardium with a glycerol solution.
9 more elements
Dependencies are inferred from the claim text.