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Catheter tube for medical use

A technology of pipe fittings and catheters, which is applied in the field of medical catheters, and can solve the problem that the guide wire cannot be stretched out.

Inactive Publication Date: 2019-09-17
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the guide wire may not protrude smoothly from the proximal opening

Method used

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  • Catheter tube for medical use
  • Catheter tube for medical use
  • Catheter tube for medical use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] refer to Figure 1 to Figure 3 A first embodiment of the present invention will be described.

[0029] figure 1 It is a perspective view showing a state in which the stent 100 is attached to the medical catheter 1 incorporating the push tube 20 which is the catheter tube of the present embodiment. The catheter 1 has: a long guide catheter 10 ; a push tube 20 through which the guide catheter 10 passes;

[0030] figure 2 It is a sectional view schematically showing the push tube 20 of this embodiment.

[0031] The guide catheter 10 is a tubular member formed of resin or the like, and has a catheter lumen 11 having an inner diameter through which a guide wire can pass. The catheter lumen 11 extends over the entire length of the guide catheter 10 , having openings at the leading and base ends of the guide catheter 10 . An operation wire 12 is connected to a base end portion of the guide catheter 10 .

[0032] The push tube 20 is configured by connecting a first tube ...

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PUM

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Abstract

A catheter tube (20) has a single-lumen distal-side tube (21) and a single-lumen proximal-side tube (22); the distal-side tube (21) and the proximal-side tube (22) are connected in such a way that a lumen (25) of the distal-side tube and a lumen (26) of the proximal-side tube (22) communicate with each other; a guide wire port (27) that opens to the outside is provided in the distal-side tube (21); and the inner diameter of the lumen (26) of the proximal-side tube (22) is smaller than the inner diameter of the lumen 25 of the distal-side tube (21).

Description

technical field [0001] The present invention relates to a medical catheter, and more specifically, to a catheter tube used in a medical catheter through which a guide wire is passed. [0002] This application claims priority based on Japanese Patent Application No. 2017-025981 filed in Japan on February 15, 2017, the contents of which are cited here. Background technique [0003] Conventionally, a medical catheter (hereinafter sometimes simply referred to as a "catheter") having a guide wire lumen through which a guide wire passes is known. In a general catheter indwelling process, first, the leading end of the guide wire is placed at a desired site in the patient's body via the forceps channel of the endoscope. Next, the catheter is advanced along the guidewire by passing the proximal end of the guidewire protruding from the proximal end of the forceps channel through (reverse loading) the guidewire lumen from the leading end of the catheter. Thereby, the catheter tip can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/01A61M25/09A61M25/14
CPCA61F2/966A61M2025/0183A61M25/0028A61M25/003A61M25/09
Inventor 畑芳树堀内伊知郎小国康平
Owner OLYMPUS CORP