[li] Patent Number: 4,840,176  Date of Patent: Jun. 20, 1989
 TREATING INSTRUMENT FOR USE WITH AN ENDOSCOPE
 Inventor: Kunio Ohno, Tokyo, Japan
 Assignee: Olympus Optical Co., Ltd., Tokyo, Japan
 Appl. No.: 116,448
 Filed: Not. 3,1987
 Foreign Application Priority Data
Nov. 6, 1986 [JP] Japan 61-264410
 Int. CI.* A61B 17/36
 U.S. Q 128/303.14; 128/303.15;
 Field of Search 128/303.14, 303.15,
 References Cited
U.S. PATENT DOCUMENTS
4,190,042 2/1980 Sinnreich .
4,294,254 10/1981 Chamness .
4,602,633 7/1986 Goodfriend et al 128/328
FOREIGN PATENT DOCUMENTS 46-23833 8/1971 Japan .
52-40616 9/1977 Japan .
54-63989 5/1979 Japan .
56-63348 5/1981 Japan ,
Primary Examiner—John D. Yasko
Attorney, Agent, or Firm—Ladas & Parry
A treating instrument for use with an endoscope, which has a flexible sheath and an opening at the distal end portion of the sheath. A treating element having directionality is accommodated slidably in the sheath. This treating element is capable of extending through the opening of the sheath to reach the part to be treated from specific directions. An elongated member is connected at one end portion to the proximal end portion of the treating element and inserted slidably in the sheath. Operating member for moving forward and backward and rotating the treating element is attached to the other end portion of the elongated member and is arranged at the rear of the proximal end portion of the sheath. This treating instrument is provided with stopping member for limiting the rotating angle of the treating element when the treating element is rotated by means of the operating member.
17 Claims, 4 Drawing Sheets