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Catheter, catheter production mold, and catheter production method

A manufacturing method and catheter technology, applied in the manufacture of catheters, molds for manufacturing catheters, and the field of catheters, to achieve the effects of improving airtightness and reducing manufacturing costs

Inactive Publication Date: 2017-02-15
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it is required to be easy to manufacture without deteriorating airtightness, etc.

Method used

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  • Catheter, catheter production mold, and catheter production method
  • Catheter, catheter production mold, and catheter production method
  • Catheter, catheter production mold, and catheter production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Next, a first embodiment of a catheter, a catheter manufacturing mold, and a catheter manufacturing method according to the present invention will be described with reference to the drawings.

[0042] figure 1 It is a perspective view showing the catheter of this embodiment, figure 2 yes figure 1 The enlarged perspective view of , in the figure, the numeral 1 is a catheter.

[0043] The catheter 1 of this embodiment is a balloon catheter. In addition, it is not limited to balloon catheters, and can be applied to other types of catheters.

[0044] Such as figure 1 As shown, the catheter 1 of this embodiment has: a cylindrical outer tube 2, which is flexible; a balloon 3, which is mounted on the front end of the outer tube 2; a cylindrical inner tube 4, which is arranged on the outer tube. 2; and a branch portion 6 that separates the outer tube 2 and the inner tube 4 on the base end (first end) side.

[0045] A first lumen 5 is formed inside the outer tube 2 and an...

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PUM

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Abstract

This catheter includes an outer tube, an inner tube provided inside the outer tube, and a branched part that separates the outer tube and the inner tube at a first end side. The ratio of the cross-sectional area of a second lumen defined within the inner tube to the cross-sectional area of a first lumen defined at least by the inside of the outer tube and the outside of the inner tube (cross-sectional area of the first lumen / cross-sectional area of the second lumen) is set so that the ratio of the cross-sectional areas of the outer tube and the inner tube at the branched part is equal to or greater than the value of the ratio of the cross-sectional areas of the first lumen and the second lumen when the inner tube is arranged inside the outer tube in a longitudinal direction in which the outer tube and the inner tube extend.

Description

technical field [0001] The present invention relates to a catheter, a mold for manufacturing the catheter, and a method for manufacturing the catheter. [0002] This application claims priority based on Japanese Patent Application No. 2014-133186 filed in Japan on June 27, 2014, the content of which is incorporated herein. Background technique [0003] Catheters used in endoscopes and the like are exemplified as treatment instruments for treating living bodies (for example, refer to Patent Document 1 to Patent Document 3). A catheter, for example, has multiple lumens and has multiple conduits over substantially the entire length. However, in a balloon catheter or the like, one end of at least some of the plurality of tubes is blocked or sealed. Also, catheters at both ends of the open pipe can be used. [0004] Regarding the medical balloon catheter described in Patent Document 3, the balloon is mounted on the front end of a flexible tube, and a main channel for deliverin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/18A61M25/00A61M25/10
CPCA61M25/0014A61M25/0028A61M25/1036A61M25/0009A61M2025/0039A61M25/0097A61M2207/10A61M25/10A61M25/0026B29C45/14336B29C45/14491B29K2023/06B29L2031/7543
Inventor 盐野润二宫野广道
Owner OLYMPUS CORP