JPH0531155A - Protector for medical instrument - Google Patents

Abstract

PURPOSE:To make it possible to break the seal without breaking line by a weak force by forming a cut groove at the middle part of a protector main body formed by welding a film having a directional property and forming a holding part above it. CONSTITUTION:On a protector 1, a cut groove 3 is formed on the middle part of the protector main body 2 formed by welding a film having a directional property, for example, a drawn film and forming a holding part 4 above the cut groove 3. When the seal of the protector 1 is opened, the surface and the rear face of the holding part 4 are picked up with fingers in the direction cutting vertically the main body to make a crack on the extended line of the cut groove 3 and this crack moves along the directional property of the film and the seal is broken.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in protectors for medical devices such as a transfusion (liquid) port of a medical bag and a protector for a cap for a blood circuit, which are used when performing a blood transfusion, an infusion or the like.

[0002]

PRIOR ART AND PROBLEMS TO BE SOLVED BY THE INVENTION At present,
The protector is made of polyvinyl chloride or an olefin elastomer, and is formed by injection molding, or is formed by stacking two sheets and forming a bag with a heat seal or a high frequency welder 20, 21. (See Figures 3 and 4).

In order to facilitate the opening of the blood transfusion (liquid) port, these protectors are injection-molded, and the wall thickness of the opening part is thinned, or two sheets are stacked to form a heat seal or a high-frequency welder. -If it is formed into a bag shape with a high frequency welder, an ultrasonic sewing machine, a heat cutter, etc. on the sheet,
A break line is formed.

However, it was difficult to adjust the depth of the break line when forming the break line by each of the above means. If the rupture line is deep, the protector is ruptured than the rupture line during the production of the medical bag, and if the rupture line is shallow, the protector cannot be opened. In particular, a protector made of an olefinic elastomer requires a precise process control for forming a fracture line because the thickness of the sheet becomes thin. Therefore, the present inventor has arrived at the next invention as a result of extensive studies to solve the above problems.

[0005]

FIG. 1 is a schematic view of a medical bag 10 equipped with a protector-1 of the present invention. In the figure, 11 is a main body formed by stacking and welding two sheets of flexible synthetic resin, and a protector-1 containing a blood transfusion (liquid) port 12 at the upper end thereof. A blood collection tube 14 and a blood collection needle 15 are attached.

FIG. 2 shows an enlarged view of the protector-1. The protector-1 is a protector body 2 formed by welding a directional film, for example, a stretched film.
A cutout groove 3 is formed in a middle portion (hereinafter referred to as “main body 2”), and a grip portion 4 is formed above the cutout groove 3.

The directional film forming the main body 2 is, for example, a stretched film made of polyethylene, polypropylene, olefin elastomer, polyester, polyvinyl chloride, ethylene-vinyl acetate copolymer, nylon or the like. Can be used as a monolayer or multilayer film. The directional film forming the main body 2 is preferably the same as or similar to the main body 11 of the medical bag 10 in thermal property. This is to improve the thermal adhesiveness with the main body 11. The thickness of the film forming the body 2 is 10 to 500 μm, preferably 50 to 15 μm.
0 μm is preferred. If it is too thick, it will be difficult to open it, and if it is too thin, its strength will be weak.

When the protector 1 is unsealed, the front and back of the grip portion 4 are pinched with fingers, and the direction of the arrow (the longitudinal direction of the main body) is indicated.
When it is pulled up to, a crack is formed on the extension line of the notch groove 3,
Since this shifts along the direction of the film, the blood transfusion (liquid) port 12 can be exposed.

[0009]

[Examples] Stretched films made of polyethylene and polypropylene (Examples 1 to 3) and sheets made of polyvinyl chloride and olefin elastomer (Comparative Examples 1 and 2) are overlaid and sealed to form a bag-shaped protector. − Was prepared and the breaking strength was measured. The results are shown in Table 1.

[0010]

[Table 1]

[0011]

In the present invention, since the stretched film is used as the constituent material of the protector, it can be opened with a weak force without forming a break line as in the conventional protector, and the unsealing property is improved. ..

[Brief description of drawings]

FIG. 1 is a schematic view of a medical bag.

FIG. 2 is an enlarged view of the protector of the present invention.

FIG. 3 is a schematic view of a conventional protector.

FIG. 4 is a schematic view of a conventional protector.

[Explanation of symbols]

 1 protector-2 protector-main body 3 notch portion 4 gripping portion

Claims (1)

Claims: 1. A protector body 2 (hereinafter referred to as "main body 2") formed by welding a directional film is formed with a cutout groove 3 in the middle abdominal part thereof, and the cutout groove 3 is formed more than the cutout groove 3. A protector-1 for a medical device (hereinafter, referred to as "protector-1"), which has a grip portion 4 formed on the top.