Biodegradable medical implant with encapsulated buffering agent
US7785615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2004 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | May 14, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L31/129
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical device for placement at a site in a patient's body and for controlling pH levels at the site in the patient's body includes one or more structural components made of a first biodegradable and/or bioabsorbable material or, alternatively, one or more structural components having a coating thereon made of a first biodegradable and/or bioabsorbable material. The device also includes a buffering agent and at least one second biodegradable and/or bioabsorbable material on or in the one or more structural components, or alternatively, on or in the coating on the one or more structural components. The at least one second biodegradable and/or bioabsorbable material encapsulates the buffering agent and the buffering agent is dispersed from the at least one second biodegradable and/or bioabsorbable material in response to hydrolysis of the first biodegradable and/or bioabsorbable material. Additionally, the device can include a drug that is either also encapsulated by the at least one second biodegradable and/or bioabsorbable material or is included with the first biodegradable and/or bioabsorbable material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.