| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_59aeacfc8c0fb15a69d7dd77723e2c36 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2300-14 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L31-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L5-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L31-042
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L29-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L29-043 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L31-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L29-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L29-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L29-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L31-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L27-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L5-04 |
| filingDate |
1997-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f8a82988151de612c1bc6e8d203b854 |
| publicationDate |
1999-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0904121-A1 |
| titleOfInvention |
Secondary shaping of ionically cross-linked polymer compositions for medical devices |
| abstract |
A method for preparing a medical device comprising: (1) treating an ionically cross-linked hydrogel to strip a substantial amount of the ionic cross-links while retaining the hydrogel in a desired shape; and (2) ionically re-cross-linking the treated hydrogel of step (1) while retaining the hydrogel in the desired shape. In an exemplary embodiment, a ureteral stent is made by mounting a length of extruded calcium or barium alginate tubing onto a shaping jig and performing secondary shaping to form coil-shaped ends by soaking the mounted tubing in a stirred potassium chloride bath, and then soaking it in a calcium chloride bath. The ends readily return after elastic deformation to their coil shapes, with the stent having a permanent memory imposed by the secondary shaping. |
| priorityDate |
1996-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |