JPH0177703U

JPH0177703U -

Info

Publication number: JPH0177703U
Application number: JP1987173460U
Authority: JP
Priority date: 1987-11-13
Filing date: 1987-11-13
Publication date: 1989-05-25
Anticipated expiration: 2002-11-13
Also published as: JPH0511842Y2

Description

[Brief explanation of the drawing]

第１図Ａ，Ｂは、本考案の第１実施例を示すラ
チエツト機構における爪の係止状態の要部拡大図
、第１図Ｃ，Ｄは、従来のラチエツト機構におけ
る爪の係止状態を示す要部拡大図、第２図は、本
考案のラチエツト機構の適用されたクリツプ装置
の斜視図、第３図は、上記第２図のクリツプ装置
における操作用部材の拡大断面図、第４図Ａは、
上記第２図のクリツプ装置の先端部の拡大縦断面
図、第４図Ｂは、拡大横断面図、第５図１―Ａ〜
４―Ｂはそれぞれ上記第２図のクリツプ装置にお
けるクリツプの動作を説明するための作用図、第
６図は、本考案の第２実施例を示すラチエツト機
構のラチエツト爪の係合状態を示す線図、第７図
は、本考案の第３実施例を示すラチエツト機構の
操作部本体に設けられたラチエツト部を示す平面
図、第８図は、上記第７図のラチエツト部の係止
用爪の係合状態を示す線図である。１３……操作部本体、１３Ａ……ラチエツト部
、１３ａ，１３ｂ，１３ｃ……係止用爪、１３ａ
′，１３ｂ′，１３ｃ′……係止用爪、１３ｂ″
，１３ｃ″……係止用爪、１７……操作用部材（
スライダ）、２０……被係止爪。 FIGS. 1A and 1B are enlarged views of the main parts of a pawl in a locked state in a ratchet mechanism according to a first embodiment of the present invention, and FIGS. 1C and D show a pawl in a locked state in a conventional ratchet mechanism. 2 is a perspective view of a clip device to which the ratchet mechanism of the present invention is applied; FIG. 3 is an enlarged cross-sectional view of the operating member of the clip device shown in FIG. 2; FIG. A is
FIG. 4B is an enlarged longitudinal cross-sectional view of the tip of the clipping device shown in FIG. 2, FIG. 4B is an enlarged cross-sectional view, and FIGS.
4-B is an operational view for explaining the operation of the clip in the clip device shown in FIG. Fig. 7 is a plan view showing a ratchet part provided on the operation part main body of a ratchet mechanism showing a third embodiment of the present invention, and Fig. 8 shows a locking pawl of the ratchet part shown in Fig. 7 above. It is a diagram showing an engaged state of. 13... Operating unit main body, 13A... Ratchet part, 13a, 13b, 13c... Locking claw, 13a
', 13b', 13c'...Latching claw, 13b''
, 13c''...Latching claw, 17...Operating member (
slider), 20...Locked claw.

Claims

[Scope of Claim for Utility Model Registration] An operating unit body in which a ratchet portion consisting of a plurality of locking pawls having a serrated cross-sectional shape is integrally formed in the longitudinal direction, and the operating unit body is slidably fitted into the operating unit body. has been,
An operating member that moves forward and backward in the longitudinal direction of the operating section main body; and an operating member that is attached to the operating member so as to be engaged with and disengaged from the ratchet part, and is normally engaged with a part of the ratchet part. A ratchet mechanism in an endoscopic treatment instrument, comprising: a claw to be latched; In this case, the pitch of the locking pawls is formed finer than the pitch of the locking pawls of the ratchet part, or the size and pitch of the locking pawls and the locking pawls are not changed. , at least two sets of the above-mentioned ratchet portion and the locking pawl are arranged in parallel, and the phase of the pitch of at least one of the ratchet portion or the locking pawl is shifted to operate the operating member as a whole. A ratchet mechanism for an endoscopic treatment instrument, characterized in that the movement pitch relative to the main body is reduced.