JPS5837398Y2 - Medical transfer equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a medical transfer device for aseptically transferring a liquid such as an infusion solution or distilled water from a hard bottle to a flexible bag.

In the medical field, when transferring the contents between glass bottles, a combination of a connecting tube with hollow needles at both ends (called an extension tube) and two air needles or a liquid passage hole and an air hole are used. Transfer needles are widely used to pierce the caps of two glass bottles, lift one of the bottles, and use the hydraulic pressure caused by the head to transfer the liquid content into an empty bottle.

However, when trying to transfer liquid from a glass bottle to a flexible empty bag, the inner surface of the flexible empty bag is in close contact with each other under atmospheric pressure and there is no space like a glass bottle. will not be transferred to an empty bag.

In this invention, a bottle needle having a liquid passage hole and an air hole and a hollow needle having only a liquid passage hole are made integrally or separately, the liquid passage holes of both needles are made to communicate with each other, and the air hole of the bottle needle is connected to the pump. A filter and a check valve are installed in the flow path, and a bottle needle and a hollow needle are inserted through their respective spouts, and the glass bottle and empty bag are connected through the liquid passage hole, and external air is supplied by pump operation. This created a positive pressure inside the glass bottle, and this positive pressure forced the liquid inside the glass bottle to be transferred smoothly into an empty bag whose inner surface was tightly sealed.

In the embodiment shown in FIGS. 1 and 2, 1 is a bottle needle having a liquid passage hole 2 and an air hole 3. A hollow needle 5 is connected in the opposite direction to a grip part 4 provided at the base. from the grip part 4 to the hollow needle 5
The air hole 3 is bent at the grip portion 4 and opened on the side thereof, and the check valve 6 is inserted into the opening.

This check valve uses a simple hemispherical surface made of a flexible material with a convex inner side and a cut line 7 cut in the convex portion.

8 is a joint pipe connected to the inlet of the air hole 3, and a filter 9
It is coupled to a core tube 10 having a built-in flange 11.

Reference numeral 12 denotes a bottomed cylindrical pump made of a flexible material connected to the core tube 10, with a small hole 13 in the bottom and the circumferential surface bent in a bellows shape to make it expandable and retractable.

In Fig. 2, 14 is a glass bottle containing an infusion solution and a spout 15, 16 is a synthetic resin-type flexible empty bag having two small spouts 17 and 18, and 19 is the spout of this empty bag. 18
This is a well-known pneumatic needle pierced through the air needle.

One embodiment of the present invention has the above-mentioned configuration, and has a glass bottle 14.
When attempting to transfer the infusion into the empty bag 16, hold the handle 4 and insert the bottle needle 1 and the hollow needle 5 into the spout 15.1, respectively.
7 to connect the glass bottle 14 and the empty bag 16 at the liquid passage hole 2, and the air needle 19 is pierced through the other mouth plug 18 of the empty bag to communicate the inside of the empty bag 16 with the atmosphere.

When the above preparations are completed, hold the flange 11 and press the small hole 13 in the bottom of the cylinder with your thumb, compress the pump 12 and pump the air inside into the core tube 10.
Send to.

This air passes through the filter 9 and is sterilized, and then flows through the joint tube 8. At this time, the check valve 6 opens the incisor 7 against the air flow from the pump 12, so that the air from the pump flows through the bottle needle. Air is sent from JL3 to the glass bottle 14.

Next, when you remove your thumb from the bottom of the pump 12 and open the small hole 13, the pump 12 expands by its own elasticity and allows outside air to flow into the pump 12. At this time, the check valve 6 opens the small hole 13. Since the cut line 7 is closed against the flow, the air inside the glass bottle does not flow back.

By repeating the compression and expansion of the pump 12, external air is sent into the joint pipe 8 one after another, and this air is passed through the filter 9.
As the air inside the glass bottle is sterilized and sent to the glass bottle 14, the air inside the glass bottle is gradually pressurized to positive pressure, and the infusion liquid in the glass bottle receives this positive pressure, so it is forcibly sent to the liquid passage hole 2 and emptied. The air in the empty bag is discharged from the air needle 19, and the infusion fluid is smoothly transferred from the glass bottle 14 to the empty bag 16 whose inner surface is in close contact.

One embodiment of the present invention has been described above, and the present invention is not limited to this embodiment, and the design can be changed within the gist of the invention.

For example, the present invention can be used to transfer an infusion in a flexible bag to another empty bag, and can also be used to transfer distilled water or other liquids in addition to infusions.

In addition, if the inside of the empty bag 16 that receives the liquid is under positive pressure or if the amount of liquid to be transferred is small, the air needle 19 becomes unnecessary, and the bottle needle 1 and the hollow needle 5 are made separately and the liquid is passed through both needles. The holes may be connected with a tube, and the check valve 6 can be made into a tapered rectangular tube with a cut line on the top surface, and various other modifications are possible. Alternatively, as a modification of the pump 12, the small hole 13 at the bottom of the cylinder may be omitted to seal the bottomed cylinder, and the inlet of the joint pipe 8 (
A branch pipe with a check valve may be provided in front of the filter 9, and external air may be introduced from this branch pipe.

In the present invention, a bottle needle having a liquid passage hole and an air hole and a hollow needle having only a liquid passage hole are made integrally or separately, the liquid passage holes of both needles are made to communicate with each other, and the air hole of the bottle needle is connected to the pump. A filter and a check valve are installed in the air flow path, and a bottle needle and an air needle are inserted into the respective spouts, and the bottle or bag and empty bag are connected through the liquid passage hole, and external air is pumped out by operating the pump. By feeding, the inside of the bottle or bag is pressurized and the liquid inside is forced out, so the liquid inside the bottle or bag can be smoothly transferred to a flexible empty bag whose inner surface is in close contact with the inside of the bottle or bag. , suitable as a liquid transfer device in the medical field.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing how the embodiment is used. In addition, 1 is a bottle needle, 2 is a liquid passage hole, 3 is an air hole, 5 is a hollow needle, 7 is a check valve, 8 is an air flow path, 9 is a filter, and 12 is a pump.

Claims (1)

[Scope of utility model registration request] A bottle needle having a liquid passage hole and an air hole and a hollow needle having only a liquid passage hole are made integrally or separately, and the liquid passage holes of both needles are made to communicate with each other,
A medical transfer device characterized by having a filter and a check valve installed in the air flow path connecting the air hole of the bottle needle and the pump.