JPH025792Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a cover for sealing and protecting a port for leading in and out of a liquid attached to a medical bag such as a blood bag or an infusion bag. Regarding improvements.

[Prior Art] A port is provided on the side of a medical bag such as a blood bag or an infusion bag for taking out liquid from the bag or injecting liquid into the bag. A protective cover is provided to maintain sterility until use.
The protective cover that has traditionally been used is
As disclosed in Japanese Utility Model Application Publication No. 42634, Japanese Utility Model Application Publication No. 58-168332, and Japanese Utility Model Application Publication No. 59-100431, an opening tab is welded and the welded portion can be opened by pulling the tab. The structure is such that it can be torn apart to expose the port. That is, the tab is welded to a V-shaped or similar seal line, and when the tab is pulled, the cover is torn along the seal line.

[Problem that the invention aims to solve] The sheets that make up conventional medical bags have minute irregularities on their surfaces to prevent the sheets from sticking together. There was a problem that the inside of the bag was difficult to see through because it became opaque. In particular, since the opening tab is welded to the protective cover of the port, the port is covered with two opaque sheets, making it difficult to observe the state of the tip of the port from the outside. Therefore, even if there was an abnormality in the port, there was a risk that it would not be discovered until the package was opened. The present invention has been made to solve this problem.

[Means for Solving the Problems] The present invention solves the above-mentioned problems by forming the welded portion between the tab and the protective cover into a specific shape.

That is, the present invention provides a cover for sealing and protecting a port provided on the side of a medical bag formed from a sheet with minute irregularities on the surface, and the cover has a tab welded to the surface. is formed so that it can be opened by pulling the cover from the base side of the port toward the end to tear the cover around the welded part, and the welded part has a planar shape with a pointed shape on the port base side, The protective cover for a medical bag port is characterized in that the surface is smoothed by heating to become transparent or translucent.

[Function] The present invention utilizes the property that when a tab and a protective cover are welded using a smooth mold, the surface of the welded part becomes smooth and transparent or translucent by heating. In conventional protective covers, the welded part was formed in a linear shape, so even if it became transparent, it was almost impossible to see through the inside.However, in this invention, the welded part is a plane, so the area that can be seen through is wide, and the tip of the port can be seen through. can be easily observed from the outside.
In addition, since the welded part has a sharp shape at the tip on the port base side, when the tab is pulled, the protective cover can be torn from the tip along the edge of the welded part without the need for particularly strong force. Unpacking takes place.

[Example] Fig. 1 is a front view of a medical bag (blood bag) provided with a protective cover of the present invention. Bad 1
is formed by welding and sealing the edges of two synthetic resin sheets with fine irregularities on the surface by embossing, and two ports 2 and 2' are provided between the sheets on the upper side. It is attached to the These ports must be kept sterile until use, so cover them with a protective cover 3.
and 3' are encapsulated and sealed. When using the port, open this protective cover to expose the tip of the port. Therefore, the protective cover must have a structure that allows it to be opened easily. Hereinafter, the protective cover of the present invention will be explained in more detail.

FIG. 2 is a front view a and a side view b of an embodiment of the port protection cover of the present invention. A tab 4 is welded to the protective cover 3 at 5, and the welded portion 5 is made transparent by welding using a smooth mold, so that the tip of the port can be easily seen through. When opening the package, first pull up the tab in the direction of the arrow in FIG. 2b. That is, when the tab is pulled up, the cover is torn from the tip of the welded part 5 along the periphery of the welded part 5 to form an opening, as shown in FIG. Then, pull it further in the direction of the arrow in FIG. 3b to expose the tip of the port as shown in FIG. 4. In the above operation, the most force is required when the cover starts to tear, but in this invention, the tip of the welded part is sharp, so the force is concentrated on the tip first, and a particularly large force is required. It can be opened with the same force as a conventional linear seal without the need for it. Furthermore, even if sheets of the same thickness are used for the protective cover 3 and the tab 4, if the welded portion is shaped as in the present invention, the protective cover side will surely be torn, but in order to make tearing easier, The protective cover can also be formed from a sheet thinner than the tab. The sheet is usually made of a soft synthetic resin such as polyvinyl chloride, and preferred sheet thickness ranges include a protective cover of 0.2 to 0.4 mm and a tab of 0.4 to 0.8 mm. Welding of the tab and the protective cover can be performed by a conventionally known method such as high frequency heating. Also,
The end of the tab can also be provided with unevenness as shown in the figure to make it easier to grip with fingers. The shape of the welded part 5 may be any shape as long as the port base side is pointed and creates an opening large enough to expose the port, and various shapes other than those shown in Figs. 1 to 4 can be used. It is. FIG. 5 is a front view showing another embodiment of the present invention, in which the welded portion is wedge-shaped.

[Effects of Discussion] According to the present invention, since the welded portion is formed to be planar and transparent or semi-transparent, the tip of the port can be seen through from the outside, and abnormalities in the port can be detected quickly. Further, since the cover can be opened in the same manner as in the past with the same amount of force, there is no inconvenience in use. Therefore,
It can be preferably used for medical bags such as blood bags.

[Brief explanation of drawings]

FIG. 1 is a front view of a medical bag (blood bag) provided with a port protection cover of the present invention. 2 to 4 are views showing the procedure for opening the port protection cover shown in FIG. 1, in which a is a front view and b is a side view. Moreover, FIG. 5 is a front view of another embodiment of the present invention. 1...Bug, 2...Port, 3...Protective cover, 4...Tab, 5...Welded part.

Claims (1)

[Scope of utility model registration request] In a cover that seals and protects a port 2 provided on the side of a medical bag 1 formed from a sheet with minute irregularities on the surface, a tab 4 is welded to the surface of the cover 3. It is formed so that it can be opened by pulling the cover from the base side of the port toward the end and tearing the cover around the welded part 5, and the welded part has a planar shape with a pointed shape on the port base side, A protective cover for a medical bag port, characterized in that the surface is smoothed by heating to become transparent or translucent.