JPH0546465Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is a bottle needle used for infusion,
In particular, it relates to bottle needles with improved vent structure.

[Conventional technology and problems with the prior art] A schematic diagram of the bottle needle 40 currently used is shown in the fourth diagram.
As shown in the figure.

The current bottle needle 40 has a needle portion 4 provided at the tip of the bottle needle 40 when communicating with a bag-shaped infusion container.
1 into the mouth of the infusion container while applying force to the collar 42, it is possible to ensure liquid permeability and allow the medicinal solution in the infusion container to flow out.

However, in order to drain the medicinal solution from the bottle-shaped infusion container, a ventilation needle is required in addition to the bottle needle 40.

For this purpose, there is a bottle needle 50 with a ventilation hole, as shown in FIG. 5, in which a ventilation needle and a bottle needle are integrally molded.

The vented bottle needle 50 includes one in which a spherical valve 52 is formed in the ventilation part 51 and one in which a porous material is formed.

This prevents the medicinal solution in the infusion container from leaking from the ventilation section 51.

Further, when the bottle needle 50 with a vent hole is used in a bag-shaped infusion container, the vent portion 51 is closed with a blind stopper 53.

However, since the ventilation part 51 and the blind plug 53 are not fixed with adhesive, the blind plug 53 may fall off due to the influence of the environmental temperature during sterilization, transportation, storage in a warehouse, etc.
Problems arose when using this product with bag-shaped infusion containers.

[Means for Solving the Problems] The present invention provides a bottle needle 1 with a ventilation hole for an infusion set used for infusing medical solutions, etc., which includes a bottle needle body 2 and a needle formed in the bottle needle body 2. A hydrophobic porous membrane 7 is installed inside the ventilation part 4, and the open end of the ventilation part is sealed and fixed with a non-permeable film 10. The present invention provides a bottle needle 1 with a ventilation hole.

[Function] A hydrophobic porous membrane is installed in the vent hole 9, and a non-breathable film 10 is sealed and fixed to the open end of the vent portion 4, so the structure is simple.

Therefore, it can be mass-produced at low cost without requiring advanced technology.

In addition, the non-ventilated film 10, which is the target part of the blind plug 53, does not fall off even when the environmental temperature changes until it is used, so it can be used with peace of mind.

[Example] Fig. 1 shows a schematic diagram of a bottle needle 1 with a ventilation hole according to the present invention.

The vented bottle needle 1 is made of a hard synthetic resin such as hard polyvinyl chloride, polyolefin, polycarbonate, polystyrene, or ABS resin.

The vented bottle needle 1 is composed of a needle portion 3, a ventilation portion 4, a tube connecting portion 5, and a collar portion 6 formed on the bottle needle body 2.

The needle portion 3 has a liquid passage hole 8 and a ventilation hole 9 formed therein.

In addition, a porous membrane is installed inside the ventilation part 4, and the open end of the ventilation part 4 is made of polyvinylidene chloride, ethylene vinyl alcohol, polyester, acrylonitrile-butadiene rubber (NBR), acrylonitrile (AN), etc. ) and methyl acrylate (MA) (trade name: Barex), etc., which are not air permeable.

Next, how to use it will be explained.

First, when draining the liquid in the bottle-shaped infusion container 20, the needle part 2 of the bottle needle 1 with a vent is inserted into the plug member 21 while applying force to the collar part 6, as shown in FIG. and ensure liquid permeability.

After that, the film 1 sealing the ventilation part 4 is removed.
By removing 0, the inside of the bottle-shaped infusion container 20 and the outside air are ventilated, so that the liquid inside the bottle 20 can flow out through the liquid passage hole 8.

Inside the ventilation section 4, a hydrophobic porous membrane 7 is placed.
Since it is attached, the medicinal solution and the like in the infusion container will not leak out from the ventilation part 4.

Moreover, since the outside air is vented into the container through the porous membrane 7, the porous membrane 7 functions as a sterilization filter, and no microorganisms or bacteria are mixed into the chemical solution, so no contamination occurs. It's safe.

In addition, when draining the medicinal solution in the bag-shaped infusion container 30, the bag's outflow port 3 as shown in FIG.
Liquid permeability can be easily ensured by inserting the needle part 2 into 1.

Since the bag-shaped infusion container 30 is flexible, there is no need to introduce outside air into the container, so the drug solution in the container can flow out without removing the non-permeable film 10 from the ventilation section 4. .

[Effects of the invention] As mentioned above, the present invention has a hydrophobic porous membrane installed inside the ventilation section 4, which prevents the drug solution from accidentally leaking and prevents outside air from entering the infusion container. In some cases, the porous membrane 7 prevents the contamination of microorganisms and bacteria in the outside air,
It is possible to suppress the occurrence of contamination.

Since a non-breathable film is sealed and fixed to the end of the ventilation opening of the ventilation section 4, the device can be used with sufficient peace of mind even when exposed to external environmental temperature changes or severe handling.

This is an excellent idea that has the following effects.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of the bottle needle with a ventilation hole of the present invention. Fig. 2 is a schematic diagram of the bottle needle of the present invention when connected to a bottle-shaped infusion container. Fig. 3 is a schematic diagram of the bottle needle of the present invention. Schematic diagram when connected to a bag-shaped infusion container, No. 4
FIG. 5 is a schematic diagram showing a conventional bottle needle. In the figure, 1 is a bottle needle with a ventilation hole, 2 is a bottle needle body,
3 is the needle part, 4 is the ventilation part, 5 is the tube connection part, 6
is a collar, 7 is a hydrophobic porous membrane, 8 is a liquid passage hole,
9 indicates a ventilation hole, and 10 indicates a non-air permeable film.

Claims (1)

[Scope of utility model registration request] A bottle needle with a ventilation hole for an intravenous drip set used when infusing medical solutions, etc., and consists of a bottle needle body, a needle part formed in the bottle needle body, and a ventilation part, and the inside of the ventilation part. 1. A bottle needle with a vent, characterized in that a hydrophobic porous membrane is attached to the vent, and the open end of the vent is sealed and fixed with a non-ventilated film.