Extrusion-molded two-layer tube for medical use and infusion bag product

A technology of extrusion molding and double-layer tubes, which is applied in the field of medical extrusion double-layer tubes and infusion bag products using the tubes, medical extrusion double-layer tubes, and can solve the problem of increasing the number of product manufacturing processes and waste , unable to eliminate problems such as adhesion, to achieve the effect of excellent product operability, ensure flexibility, and excellent operability

Active Publication Date: 2015-07-22
JMS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the past, as disclosed in Japanese Patent Publication No. 1-31389, a method of reducing the contact area between the surface of the pipe and the member to be joined has also been proposed, but it only stops at alleviating the phenomenon of sticking, but cannot eliminate the problem of sticking
[0009] In addition, in ord

Method used

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  • Extrusion-molded two-layer tube for medical use and infusion bag product
  • Extrusion-molded two-layer tube for medical use and infusion bag product

Examples

Experimental program
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Embodiment Construction

[0027] Hereinafter, embodiments of the present invention will be described in detail.

[0028] The medical extruded double-layer tube of the present invention has a double-layer structure with an inner layer and an outer layer, the inner layer is made of flexible material, and the outer layer is made of a material with a higher melting point.

[0029] First, a preliminary test is performed. Prepare two kinds of composite materials of styrene-based elastomers with a melting point below 120°C, both of which are used in existing medical tubes, for the inner layer. Polypropylene from various companies is used for the outer layer, and the thickness of the outer layer is 4 to 14 of the overall thickness. %, for tube extrusion molding.

[0030] As an evaluation item, the presence or absence of blocking with the resin film for packaging was checked. Specifically, the tube was placed on the polypropylene side (package inner material) of a packaging resin film composed of a double-lay...

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PUM

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Abstract

An extrusion-molded two-layer tube for medical use that is inserted from the outside into a resin member to be bonded that is for medical use, said tube being closely joined thereto by blocking by heating, and is characterized by: the use in an inner layer thereof of polyethylene, polypropylene, a styrene-based elastomer, an olefin-based elastomer, a mixture of these, or a raw material having these as the main component thereof, the raw material having a melting point of no more than the heating temperature; the use in an outer layer thereof of polypropylene, a styrene-based elastomer, an olefin-based elastomer, a mixture of these, or a raw material having these as the main component thereof, the raw material having a melting point greater than the heating temperature; and the thickness of the outer layer being 2%-5% of the thickness of the extrusion-molded two-layer tube overall.

Description

technical field [0001] The invention relates to a medical extruded double-layer tube and an infusion bag product using the tube, in particular to a medical extruded double-layer tube that does not stick to each other or between the tube and other parts during heat sterilization And infusion bag products with excellent operability. Background technique [0002] The performance required for a medical tube includes safety to a medical solution, flexibility, and bondability with a member to be joined. [0003] For example, infusion bags such as peritoneal dialysis bags used by patients at home are individually packaged with a packaging resin film for hygienic purposes, heated at a predetermined temperature, and circulated. At this time, the medical tube and other joined members of the infusion bag are closely joined by adhesion utilizing thermal load. [0004] Thereby, in the manufacturing process of the product packed in a tube, reduction of the number of processes, reduction...

Claims

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Application Information

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IPC IPC(8): B32B1/08A61J1/10A61M5/14
CPCB32B27/32B32B2274/00A61J1/10B32B2439/80B32B2250/02B32B27/08B32B1/08B32B2323/10A61M2207/00A61M39/08B32B27/302A61M2205/0238
Inventor 斋藤宏竹爪秀幸
Owner JMS CO LTD
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