Drug delivery apparatus and method

Patent 5286254 Issued on February 15, 1994. Estimated Expiration Date:

August 28, 2012. Estimated 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.

Abstract Claims Description Full Text

Patent References

578611

725731

873021

2123980

2499045

3542014

3865108

Dispensing instrument
Patent #: 4126134
Issued on: 11/21/1978
Inventor: Bolduc , et al.

Catheter apparatus with occlusion and flow diverting means
Patent #: 4137906
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Inventor: Akiyama , et al.

Catheter for the examination or treatment of a blood vessel and apparatus for the utilization of this catheter
Patent #: 4202346
Issued on: 05/13/1980
Inventor: Granier

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Inventors

Assignee

CorTrak Medical Inc.

Application

No. 937464 filed on 08/28/1992

US Classes:

604/21, With tubular injection means inserted into body604/20, Infrared, visible light, ultraviolet, X-ray or electrical energy applied to body (e.g., iontophoresis, etc.)604/103.01, Delivering fluid or material through wall of inflated means604/913DILATORS MADE OF SWELLABLE MATERIAL [A61M 29/02]

Examiners

Primary: Rosenbaum, C. Fred
Assistant: Rafa, Michael

Attorney, Agent or Firm

Merchant, Gould, Smith, Edell, Welter & Schmidt

Foreign Patent References

299698 EP. 01/13/1989
372088 EP. 06/13/1990
147314 DE. 04/13/1981
3915636 DE. 04/13/1990
2582946 FR. 12/13/1986
49-132888 JP. 12/13/1974
WO89/01794 WO. 03/13/1989
WO91/16945 WO. 11/13/1991
WO91/19529 WO. 12/13/1991
588870 CH. 06/13/1977
645273 CH. 09/13/1984
1003853 SU 03/13/1983
1069826 SU. 01/13/1984
1069827 SU. 01/13/1984
1146057 SU 03/13/1985
1410973 SU. 07/13/1988

International Class

A61B 017/36

Abstract

A drug delivery apparatus and method for delivering a drug locally to internal body tissue. The invention contemplates positioning a drug delivery device in a body passageway or within body tissue and then selectively introducing a selected drug so that it is transported across a drug transport wall of the device for direct contact with the passageway wall or body tissue. A further aspect of the present invention involves treating a dilated vessel in the area of a stenotic lesion with a fixative or other drug to render the vessel biologically inert and to form a biological stent or prevent restenosis using specifically selected drugs. A still further aspect of the present invention involves treating a tumor or local or regional tissue mass with antitumor sensitizing agents, biological modifiers, antibiotics or other types of drugs by delivery of the drug to the tumor or tissue area directly or through the passageway wall.

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