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classificationCPCAdditional http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61M2027-004
classificationCPCInventive http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61M27-006
classificationIPCInventive http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61M27-00
filingDate 1974-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date>
grantDate 1975-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_90d0d05f99596f2f0df7065f6177337a
publicationDate 1975-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber US-3886948-A
titleOfInvention Ventricular shunt having a variable pressure valve
abstract In the ventricular shunt system disclosed herein, proper cerebral hydraulic conditions for the treatment of hydrocephalus are maintained by a one-way valve incorporating adjustable biasing means for altering the back pressure maintained by the valve.
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