United States Patent [19] [ii] Patent Number: 4,983,166
Yamawaki [45] Date of Patent: Jan. 8, 1991
U.S. Patent Jan. 8,1991 Sheet 1 of 5 4,983,166
[54] BALLOON CATHETER & METHOD OF USE OF THE SAME
[76] Inventor: Yoshiharu Yamawaki, 68-banchi, 7-chome, Ozakikita-machi, Kakamigahara-shi, Gifu, Japan
[21] Appl. No.: 511,917
[22] Filed: Apr. 16,1990
Related U.S. Application Data
[63] Continuation of Ser. No. 229,677, Aug. 8, 1988, abandoned.
[30] Foreign Application Priority Data
Dec. 28, 1987 [JP] Japan 62-334175
[51] Int. CI.' A61M 29/00
[52] U.S.C1 604/96; 604/102;
604/281; 606/194
[58] Field of Search 604/93, 96, 97, 98,
604/101-102, 280, 281; 600/18, 31;
606/191-197
[56] References Cited
U.S. PATENT DOCUMENTS
550,238 11/1895 Allen 604/102
2,642,874 6/1953 Keeling 604/102
3,736,939 6/1973 Taylor 604/96
3,977,408 8/1976 MacKew 604/102
4,276,874 7/1981 Wolvek et al. .
4,299,226 11/1981 Banka .
4,406,653 9/1983 Nunez .
4,631,054 12/1986 Kim 604/280
4,658,812 4/1987 Hatzenbuhler et al 604/96
4,714,460 12/1987 Calderon 604/264
4,741,328 5/1988 Gabbay 600/18
4,762,125 8/1988 Leiman et al 604/96
4,771,776 9/1988 Powell et al 604/96
4,777,951 10/1988 Cribier et al 604/96
4,790,315 12/1988 Mueller, Jr. et al 604/96
4,917,667 4/1990 Jackson 604/96
FOREIGN PATENT DOCUMENTS
3441586 5/1986 Fed. Rep. of Germany 604/96
57-195470 5/1981 Japan .
59-177064 3/1983 Japan .
Primary Examiner—C. Fred Rosenbaum
Assistant Examiner—Kathleen A. Daley
Attorney, Agent, or Firm—Armstrong, Nikaido,
Marmelstein, Kubovcik, & Murray
[57] ABSTRACT
A balloon catheter comprised a balloon catheter body, a balloon, a main passage and an auxiliary passage. The balloon is provided on the periphery of the tip portion of the catheter body to inflate for blocking a bloodstream at a desired site inside blood vessels. The auxiliary passage is provided for inflating the balloon. The main passage is provided behind the balloon, having an opening to eject a drug. The tip portion of the balloon catheter is inserted into one of branches of the blood vessel near targeted affected part. A fluid is injected into the balloon so that the balloon blocks a bloodstream in the branches. Therefore, a drug is ejected through the main passage of the balloon catheter into other branches.
4 Claims, 5 Drawing Sheets
