JPS6450840U

JPS6450840U -

Info

Publication number: JPS6450840U
Application number: JP3852487U
Authority: JP
Priority date: 1987-03-18
Filing date: 1987-03-18
Publication date: 1989-03-29
Also published as: JPH0346768Y2

Description

[Brief explanation of the drawing]

第１図ａ、同ｂは夫々この考案の一態様である
ペンローズドレーンチユーブの断面形状を示す図
、第２図ａ、同ｂは第１図ａ、同ｂに対応する突
起主要部分の拡大図、第３図ａ、同ｂ図は夫々従
来製品の一態様であるペンローズドレーンチユー
ブの断面形状を示す図、第４図でａ、同ｂは、第
３図ａ、同ｂに対応する突起全体の拡大図である
。図中、Ｎはチユーブ断面における突起の頸部最
小幅寸法、Ｈ_１はＨの態様の一つでこの考案に係
るチユーブ断面における突起の頭頂部最大幅寸法
、Ｈ_２はＨの態様の一つで従来製品のチユーブ断
面における頭頂部最大幅寸法、Ｔ_１はＴの態様の
一つでこの考案に係るチユーブ断面における内壁
の最小肉厚寸法、Ｔ_２はＴの態様の一つで従来製
品のチユーブ断面における内壁の最小肉厚寸法、
Ｒはチユーブ断面におけるチユーブの外半径寸法
、Ｌはこの考案により形成される小ルーメン様部
分である。 Figures 1a and 1b are views showing the cross-sectional shape of a Penrose drain tube, which is an embodiment of this invention, and Figures 2a and 2b are enlarged views of the main parts of the projections corresponding to Figures 1a and 1b. , Figures 3a and 3b are diagrams showing the cross-sectional shape of a Penrose drain tube, which is an aspect of a conventional product, respectively. Figures 4a and 4b show the entire protrusion corresponding to Figures 3a and 3b. It is an enlarged view of. In the figure, N is the minimum width dimension of the neck of the protrusion in the cross section of the tube, _H1 is one of the embodiments of H and the maximum width dimension of the top of the protrusion in the cross section of the tube according to this invention, and _H2 is one of the embodiments of H. is the maximum width dimension of the top of the head in the cross section of the tube of the conventional product, _T1 is one of the aspects of T and the minimum thickness dimension of the inner wall in the cross section of the tube according to this invention, and _T2 is one of the aspects of T and is the maximum width of the top of the head in the cross section of the tube of the conventional product. The minimum wall thickness of the inner wall in the tube cross section,
R is the outer radius dimension of the tube in the cross section of the tube, and L is the small lumen-like portion formed by this invention.

Claims

[Scope of Claim for Utility Model Registration] 1. When looking at the cross-sectional shape of the tube, a plurality of protrusions are formed from the inner wall of the tube toward the center with a minimum wall thickness that will not be crushed by pressure from surrounding tissue or suction operation. A Penrose drain tube characterized in that the ratio N/H of the minimum width N of the neck part of the protrusion to the maximum width H of the crown part of the protrusion is less than 1. 2. The Penrose drain tube according to claim 1, wherein the ratio T/R between the minimum wall thickness T of the inner wall of the tube and the radius R of the tube is 1/2 to 1/6. 3. The Penrose drain tube according to any one of claims 1 to 2 of the utility model registration claim, which is made of rubber.