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US Patent 6228393 - Drug delivery via therapeutic hydrogels

US Patent Issued on May 8, 2001
Estimated Patent Expiration Date: Icon_subject October 5, 2019Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

The present invention is directed to a vehicle for effecting drug delivery from a solid substrate. Hydrogels loaded with liposomal therapeutic agents such as antibiotics are covalently bonded to the surface of substrates such as in-dwelling medical devices, such as implants, catheters, and the like. The present invention is particularly useful in the treatment and prevention of biofilm mediated infection often associated with the use of in-dwelling medical devices.

Other References

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Inventors

Assignee

Application

No. 412584 filed on 10/05/1999

US Classes:

424/450, Liposomes424/484, Matrices424/485, Natural gums, resin or latex424/486, Synthetic polymer514/82, Quinolinyl or isoquinolinyl (including hydrogenated)604/27, Material introduced into and removed from body through passage in body inserted means604/523, Flexible catheter or means (e.g., coupling) used therewith606/191, Internal pressure applicator (e.g., dilator)606/194Inserted in vascular system

Field of Search

424/450, Liposomes424/484, Matrices424/485, Natural gums, resin or latex424/486, Synthetic polymer424/487, Acrylic acid and derivatives424/488, Polysaccharides (e.g., cellulose, etc.)606/191, Internal pressure applicator (e.g., dilator)606/194, Inserted in vascular system604/27, Material introduced into and removed from body through passage in body inserted means514/82Quinolinyl or isoquinolinyl (including hydrogenated)

Examiners

Primary: Kishore, Gollamudi S.

Attorney, Agent or Firm

US Patent References

4442133, Antibiotic bonding of vascular prostheses and other implants
Issued on: 04/10/1984
Inventor: Greco ,   et al.
4749585, Antibiotic bonded prosthesis and process for producing same
Issued on: 06/07/1988
Inventor: Greco ,   et al.
5575815, Local polymeric gel therapy
Issued on: 11/19/1996
Inventor: Slepian, et al.
5741516Sphingosomes for enhanced drug delivery
Issued on: 04/21/1998
Inventor: Webb, et al.

Foreign Patent References

  • 2181390 CA. 01/09/1997
  • WO91/09616 WO. 02/09/1991

International Classes

A61K 009/127
A61M 025/00

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