US3898986A - Biotransformable intrauterine device - Google Patents

Biotransformable intrauterine device Download PDF

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Publication number
US3898986A
US3898986A US31901472A US3898986A US 3898986 A US3898986 A US 3898986A US 31901472 A US31901472 A US 31901472A US 3898986 A US3898986 A US 3898986A
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US
United States
Prior art keywords
drug
uterine
delivery
uterine cavity
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Inventor
Alejandro Zaffaroni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alza Corp
Original Assignee
Alza Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alza Corp filed Critical Alza Corp
Priority to US05319014 priority Critical patent/US3898986A/en
Priority claimed from US05/583,829 external-priority patent/US3971367A/en
Application granted granted Critical
Publication of US3898986A publication Critical patent/US3898986A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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