Drum shape container for body fluid treatment device and body liquid treatment device

A processor and body fluid technology, applied in the direction of dialysis systems, etc., can solve the problems of improvement and unfinished strength, and achieve the effect of improving assembly process and forming production cycle

Active Publication Date: 2011-09-14
ASAHI KASEI MEDICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, since it is important to use a thin-walled container for a cylindrical container for body fluid treatment in terms of cost performance, it is not a good idea to simply increase the strength of the container by thickening it.
On the other hand, as mentioned above, for the weld line that appears in the molded product, only focus on improving its appearance defects, and there has been no research focusing on the improvement of the strength near the weld line, especially the improvement of the impact strength.

Method used

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  • Drum shape container for body fluid treatment device and body liquid treatment device
  • Drum shape container for body fluid treatment device and body liquid treatment device
  • Drum shape container for body fluid treatment device and body liquid treatment device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] like figure 1 As shown in , a gate 2 is provided in the center of the circumferential surface of the cylindrical container 1, and a styrene-butadiene copolymer resin is injection-molded by a mold to obtain a total length of 280 mm, an outer diameter (tube part) of 40 mm, and a wall thickness of 2 mm. In the cylindrical container for body fluid treatment, three air exhaust pipes are installed at approximately equal intervals as the gas discharge part on the outer surface side of the mold that abuts on the weld line 3 that appears on the cylindrical container 1. pin 6.

[0084] As a result of the impact test A, it was confirmed that the impact strength of the part not on the weld line was 20kg·cm / cm, while the impact strength on the weld line was 12kg·cm / cm, maintaining 60% of the impact resistance strength. The results are shown in Table 1.

Embodiment 2

[0086] like figure 2 As shown in , two gates 2 are provided near both ends of the circumferential surface of the cylindrical container 1, and a styrene-butadiene copolymer resin is injection-molded using a mold to obtain a total length of 280mm, an outer diameter (tube part) of 40mm, In the cylindrical container for body fluid treatment with a wall thickness of 2mm, in the mold, the outer surface side of the mold that abuts on the welded line 3 that appears on the cylindrical container 1 is mounted on the circumferential surface facing each other. The root is the exhaust needle 6 as the gas discharge part.

[0087] As a result of the impact test A, it was confirmed that the impact resistance of the part not on the weld line was 20kg·cm / cm, while the impact resistance on the weld line was 11kg·cm / cm, maintaining 55% of the impact resistance strength. The results are shown in Table 1.

Embodiment 3

[0089] like image 3 As shown in , except that the structure of the mold for obtaining the cylindrical container 1 with threads applied to both ends was used, the same mold as in Example 2 was used to install the gate and the exhaust needle, and the acrylonitrile resin was injection-molded to obtain a total length of 280 mm. , A cylindrical container for body fluid treatment with an outer diameter (cylindrical portion) of 40 mm and a wall thickness of 2 mm.

[0090] As a result of the impact test A, it was confirmed that the impact resistance of the part not on the weld line was 16kg·cm / cm, while the impact resistance on the weld line was 10kg·cm / cm, maintaining 63% of the impact resistance strength. The results are shown in Table 1.

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Abstract

The present invention provides a drum container for body fluid processor and a body fluid processor. Said drum container is that the strength nearby the thermoweld line is reduced less even though it is shaped by injection of plastic material with low impact resistance, and it is not easy to burst even though knocking using a nipper when pre-injecting operation, that is the drum container has high impact resistance. The drum container is shaped by injecting plastic material with less than 10 kg*cm / cm of impact resistance using a mould of a gas exhaust part by means of a mould part connecting to the position of thermoweld line of shaped production.

Description

technical field [0001] The present invention relates to a cylindrical container for body fluid treatment and a body fluid treatment using the same. More specifically, it relates to a cylindrical container for body fluid treatment having practical impact resistance even when it is injection molded from a plastic material having low impact strength, and a body fluid treatment using the same. Background technique [0002] In recent years, the patient's blood has been taken out of the body to remove wastes in the blood through dialysis or filtration, or to remove autoantibodies, immune complexes, low-density lipoproteins and other pathogenic substances through adsorption or filtration, and then return the purified blood to the patient. Extracorporeal circulation blood purification therapy for patients is becoming popular. For example, hemodialysis therapy for patients with chronic renal insufficiency, adsorption therapy, double-filtered plasma depletion therapy, and plasma exch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/34A61M1/14A61M1/16B29K25/00B29K23/00B29K33/20B29K55/00
Inventor 田中刚
Owner ASAHI KASEI MEDICAL CO LTD
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