Bioabsorbable stent-graft and covered stent
OwnerClaude O. Clercinventor
Life of this patent
Estimating the term…
Abstract
The invention is a completely bioabsorbable stent-graft or covered stent. The stent preferably is a self-expanded stent of the woven or braided type made entirely of bioabsorbable material such as polylactic acid (PLA) or polyglycolic acid (PGA). The stent is either totally or partially covered by a film of a bioabsorbable material such as a bioabsorbable elastomer that can conform to the stent deformation.
Claims26
A bioabsorbable tubular prosthesis comprising:
- a fully bioabsorbable first stent layer for supporting a body vessel;
- and
- a fully bioabsorbable second layer attached to said first layer for substantially sealing said body vessel.
A method of manufacturing a bioabsorbable tubular prosthesis comprising a fully bioabsorbable first stent layer for supporting a body vessel and a fully bioabsorbable second layer attached to said first layer for substantially sealing said body vessel, said method comprising the steps of:
- (1) providing a stent body;
- (2) providing a layer comprised entirely of bioabsorbable material;
- (3) attaching said layer to said stent body.
The method of claim wherein step (3) comprises:
- (3.1) dissolving a bioabsorbable polymer in a solvent to create a solution;
- (3.2) applying said solution to said stent body;
- (3.3) bringing said layer in contact with said stent body and said solution;
- and
- (3.4) applying heat to evaporate said solvent.
A method of manufacturing a bioabsorbable tubular prosthesis comprising a fully bioabsorbable first stent layer for supporting a body vessel and a fully bioabsorbable second layer attached to said first layer for substantially sealing said body vessel, said method comprising the steps of:
- (1) providing a stent body;
- (2) covering said stent body with a solution comprising a bioabsorbable polymer dissolved in a solvent;
- and
- (3) heating said prosthesis to dissolve said solvent, whereby a coat of said bioabsorbable polymer is left on said stent body.
A method of manufacturing a bioabsorbable tubular prosthesis comprising a fully bioabsorbable first stent layer for supporting a body vessel and a fully bioabsorbable second layer attached to said first layer for substantially sealing said body vessel, said method comprising the steps of:
- (1) providing a stent body;
- (2) covering said stent body with an adhesive;
- and
- (3) laying bioabsorbable threads in said adhesive on said stent body to form said bioabsorbable second layer.
Dependencies are inferred from the claim text.