[54] LIGATION DEVICE FOR ENDOSCOPE
[75] Inventor: Teruo Ouchi, Saitama-ken, Japan
[73] Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, Japan
[21] Appl. No.: 09/098,498
[22] Filed: Jun. 17, 1998
[30] Foreign Application Priority Data
Jun. 19, 1997 [JP] Japan 9-162141
[51] Int. CI. A61B 17 04
[52] U.S. CI 606/140; 606/141
[58] Field of Search 606/139-144
[56] References Cited
U.S. PATENT DOCUMENTS
4,178,810 12/1979 Takahashi 606/140
4,735,194 4/1988 Stiegmann 600/117
5,226,908 7/1993 Yoon 606/141
5,269,789 12/1993 Chin et al 606/140
5,569,268 10/1996 Hosoda 606/140
FOREIGN PATENT DOCUMENTS
8-280699 10/1996 Japan . Primary Examiner—Gary Jackson
Attorney, Agent, or Firm—Greenblum & Bernstein, PL.C [57] ABSTRACT
A ligation device includes (1) a flexible outer tube which can be inserted through a channel ol an insertion tube ol the endoscope, (2) a flexible inner tube provided in the outer tube, (3) a ring which is made ol an elastic material and is provided to a periphery ol the inner tube, and (4) an manipulator which moves the outer tube with respect to the inner tube, so that the outer tube pushes the ring out ol the inner tube.
25 Claims, 7 Drawing Sheets
