
US Patent No: 5,954,706
Number of patents in Portfolio can not be more than 2000
Drug delivery
Stats
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Sep 21, 1999
Issued date -
Jun 7, 1995
filing date -
08/473,136
serial no -
In Force
status
Importance
Abstract
The invention features a catheter and methods for delivering drug to tissue at a desired location of the wall of a body lumen. The catheter is constructed for insertion in a body lumen and has a catheter shaft and an expandable portion mounted on the catheter shaft. The expandable portion is expandable to a controlled pressure to fill the cross-section of the body lumen and press against the wall of the body lumen. In one embodiment, at least a portion of the exterior surface of the expandable portion is defined by a coating of a tenaciously adhered swellable hydrogel polymer. Incorporated in the hydrogel polymer is an aqueous solution of a preselected drug to be delivered to the tissue or plaque. The hydrogel polymer and drug are selected to allow rapid release of a desired dosage of the drug from the hydrogel polymer coating during compression of the hydrogel polymer coating against the wall of the lumen when the expandable portion is expanded. In other embodiments the polymer is released from the expandable portion in response to pressure, to coat the wall of the body lumen.
First Claim
Related Publications
International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,994,033 Intravascular drug delivery dilatation catheter | 335 | 1989 | |
| 5,047,045 Multi-section coaxial angioplasty catheter | 171 | 1989 | |
| 5,135,516 Lubricious antithrombogenic catheters, guidewires and coatings | 192 | 1989 | |
| 5,304,121 Drug delivery system making use of a hydrogel polymer coating | 422 | 1991 | |
| 5,234,456 Hydrophilic stent | 440 | 1992 | |
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| 5,041,100 Catheter and hydrophilic, friction-reducing coating thereon | 137 | 1989 | |
| 5,049,132 Balloon catheter for delivering therapeutic agents | 358 | 1990 | |
| 5,213,576 Therapeutic porous balloon catheter | 233 | 1991 | |
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| 4,832,688 Catheter for repair of blood vessel | 176 | 1987 | |
| 4,876,126 Medical instrument and method for making | 109 | 1988 | |
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| 4,714,460 Methods and systems for retrograde perfusion in the body for curing it of the disease or immume deficiency | 163 | 1986 | |
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| 5,021,044 Catheter for even distribution of therapeutic fluids | 205 | 1989 | |
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| 4,603,152 Antimicrobial compositions | 168 | 1984 | |
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| 4,589,873 Method of applying a hydrophilic coating to a polymeric substrate and articles prepared thereby | 88 | 1984 | |
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| 4,515,593 Medical tubing having exterior hydrophilic coating for microbiocide absorption therein and method for using same | 78 | 1981 | |
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| 4,448,195 Reinforced balloon catheter | 90 | 1981 | |
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| 4,993,412 Method and apparatus for removal of obstructive substance from body channels | 34 | 1989 | |
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| 5,213,580 Biodegradable polymeric endoluminal sealing process | 259 | 1992 | |
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| 4,769,013 Bio-effecting medical material and device | 130 | 1986 | |
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| 4,923,450 Medical tubes for placement into the body of a patient | 115 | 1988 | |
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| 5,120,322 Method and apparatus for treatment of fibrotic lesions | 140 | 1990 | |
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| 4,950,256 Non-thrombogenic intravascular time release catheter | 72 | 1990 | |
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| 4,732,930 Reversible, discontinuous volume changes of ionized isopropylacrylamide cells | 71 | 1985 | |
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| 4,481,323 Hydrocarbon block copolymer with dispersed polysiloxane | 72 | 1981 | |
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| 5,026,607 Medical apparatus having protective, lubricious coating | 130 | 1989 | |
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| 5,102,402 Releasable coatings on balloon catheters | 228 | 1991 | |
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| 5,163,906 Dilatation catheter and method for widening of strictures | 112 | 1992 | |
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| 4,330,497 Method of making grooved plastic medical tubing | 54 | 1981 | |
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| 4,909,258 Internal mammary artery (IMA) catheter | 86 | 1988 | |
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| 4,784,647 Catheter meatal pad device | 40 | 1986 | |
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| 5,091,205 Hydrophilic lubricious coatings | 256 | 1989 | |
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| 4,364,392 Detachable balloon catheter | 143 | 1980 | |
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| 4,299,226 Coronary dilation method | 187 | 1979 | |
| 4,423,725 Multiple surgical cuff | 421 | 1982 | |
| 4,592,340 Artificial catheter means | 186 | 1984 | |
| 4,693,243 Conduit system for directly administering topical anaesthesia to blocked laryngeal-tracheal areas | 116 | 1986 | |
| 4,820,270 Balloon catheter and process for the manufacture thereof | 69 | 1987 | |
| 4,983,166 Balloon catheter and method of use of the same | 52 | 1990 | |
| 5,180,366 Apparatus and method for angioplasty and for preventing re-stenosis | 176 | 1990 | |
| 5,232,444 Dilatation catheter | 230 | 1991 | |