JPH02114006U

JPH02114006U -

Info

Publication number: JPH02114006U
Application number: JP2264289U
Authority: JP
Priority date: 1989-02-28
Filing date: 1989-02-28
Publication date: 1990-09-12
Anticipated expiration: 2003-12-06
Also published as: JPH0546405Y2

Description

[Brief explanation of the drawing]

第１図は本考案の第１の実施例の側面断面図、
第２図はその−線切断面図、第３図はその湾
曲部の機構の側面断面図、第４図はその部分斜視
図、第５図はその正面断面図、第６図は本考案の
第２の実施例の側面断面図、第７図はその−
線切断面図、第８図はその湾曲部の機構の側面断
面図、第９図はその部分斜視図、第１０図はその
正面断面図、第１１図は本考案の第３の実施例の
湾曲部の機構の一部を切除して示す平面図、第１
２図はその側面断面図、第１３図はその一部を切
除して示す斜視図、第１４図は従来例の側面断面
図、第１５図はその−線切断面図、第１
６図はその湾曲部の機構の側面断面図、第１７図
はその部分斜視図、第１８図はその正面断面図で
ある。１……先端部本体、２……湾曲部、４……節輪
、５……操作ワイヤ、２１……鉗子チヤンネル。 FIG. 1 is a side sectional view of the first embodiment of the present invention;
Fig. 2 is a sectional view taken along the - line, Fig. 3 is a side sectional view of the mechanism of the bending part, Fig. 4 is a partial perspective view thereof, Fig. 5 is a front sectional view thereof, and Fig. 6 is a sectional view of the present invention. A side sectional view of the second embodiment, FIG.
8 is a side sectional view of the mechanism of the bending part, FIG. 9 is a partial perspective view thereof, FIG. 10 is a front sectional view thereof, and FIG. 11 is a third embodiment of the present invention. A plan view showing a part of the mechanism of the bending part cut away, 1st
2 is a side sectional view thereof, FIG. 13 is a partially cut away perspective view, FIG. 14 is a side sectional view of the conventional example, FIG. 15 is a - line sectional view thereof, and FIG.
6 is a side sectional view of the mechanism of the bending portion, FIG. 17 is a partial perspective view thereof, and FIG. 18 is a front sectional view thereof. DESCRIPTION OF SYMBOLS 1... Tip body, 2... Curved part, 4... Joint ring, 5... Operating wire, 21... Forceps channel.

Claims

[Scope of Claim for Utility Model Registration] (1) A forceps insertion passage for inserting treatment tools such as forceps is inserted into a curved portion that can be bent only in two symmetrical directions across the tube axis, and the curved portion is A pair of bending operation wires are connected to the tip portion, and by remotely selecting and pulling one of the bending operation wires, the bending portion is selectively bent in one of the two directions. In the bending portion of the endoscope, the bending operation wires arranged on the forceps insertion path side are arranged at least near the distal end portion of the bending operation wires at substantially symmetrical and distant positions across the bending direction. A curved portion of an endoscope characterized by being formed with. (2) Connect the tip body containing a fixed image sensor to the curved portion that can be bent only in two symmetrical directions across the tube axis, and connect the forceps insertion passage for inserting treatment tools such as forceps to the tip. The bending portion is inserted into the bending portion from the main body, and a pair of bending operation wires are connected to the distal end portion of the bending portion, and one of the bending operation wires is remotely selected and pulled. In the bending portion of the endoscope that is selectively bent in either of the two directions, the bending operation wire disposed on the forceps insertion path side is bent in the bending direction at least near the distal end portion thereof. A curved portion of an endoscope, characterized in that it is formed of a plurality of wires arranged at substantially symmetrical and distant positions with the curved portion sandwiching the curved portion of the endoscope.