JPH0788184A - Continuous liquid discharge device - Google Patents

Abstract

PURPOSE:To safely and efficiently discharge liquids of each different composition contained in each chamber by an easy operation by providing a continuous liquid discharge device with plural liquid containing chambers arranged continuously each other beyond a bulkhead, and a double head needle for passing through the bulkhead. CONSTITUTION:When one end of a double head needle 6 is pierced under the skin of a patient, and an additional force disk 22 in a hand pressing member 20 is pressed, a second sliding member 17 is pressed through a stereoscopic bottom face 21, and this sliding member 17 presses a second member 16 through a second liquid 19. This second member 16 presses a first sliding member 12, and a first sliding member 12 presses a first member 11 through a first liquid 14. In this case, since the double head needle 6 is allowed to pass through a first elastic part 11a in a first member 11, a first liquid 14 flows out of the double head needle 6. Subsequently, the double head needle 6 is pierced into a first sliding elastic part 12a in a first sliding member 12, and next, the double head needle 6 is pierced into a second elastic part 16a in a second member 16, by which a second liquid 19 flows out of the double head needle 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous liquid discharge device, and more specifically, it can discharge liquids having different compositions safely, efficiently and continuously by a simple operation, which is convenient for handling and practical. Continuous liquid discharge device.

[0002]

2. Description of the Related Art In the field of medical care, drug development, etc., different liquids, such as drug solutions and infusion solutions, are used in the body of patients, testers, experimental animals, etc. for the purpose of treatment, clinical trials, etc. In some cases, it is necessary to inject each of these separately and continuously. For example, there is a case where the anti-neoplastic agent is flushed by first injecting the antineoplastic agent into the patient's body and then injecting physiological saline.

Conventionally, in such a case, as a liquid discharging device, a syringe is used when the injection amount of the liquid is small, and a drip device is used when the injection amount is large, and the liquid is injected into the patient's body as follows. That is, when a syringe is used, the antineoplastic agent is first transferred to the syringe. After deaeration, the antineoplastic agent is injected into the patient's body using the syringe. Next, physiological saline for flushing the anti-neoplastic agent is transferred into another syringe. And
After deaeration, the physiological saline is injected into the body of the patient using the syringe. In the case of using a drip device, first, an infusion solution having a hollow needle portion penetrating a rupturable elastic portion of an infusion bag at one end and a hollow needle arranged in a vein of a patient at the other end. The needle portion is connected to the infusion bag such that the needle portion of the tube penetrates the rupturable elastic portion of the infusion bag containing the antineoplastic agent.
Next, the hollow needle is placed in the vein of the patient and infusion is performed. Then, after the infusion of the anti-neoplastic agent is completed, the needle portion is removed from the infusion bag. Subsequently, the needle portion is connected to the infusion bag so that the needle portion penetrates the rupturable elastic portion of the infusion bag containing the physiological saline solution, and then drip is performed. As described above, the antineoplastic agent and the physiological saline are continuously injected into the patient's body by using two syringes or by exchanging the infusion bags one by one.

However, the conventional case has the following problems. That is, when two syringes are used, the patient's skin has to be pierced with the injection needle twice, which causes great pain to the patient. At the time of injection, there is a problem that miscellaneous bacteria are mixed in the body and the risk of accidents due to operation mistakes increases. In particular, in the treatments that require such injections several times a day or the treatments that require such injections for a long period of time, the pain and risk to the patient are great, and the life-threatening seriousness is serious. An accident may occur. Further, when using the drip infusion device, since the infusion bag must be replaced one by one, at the time of replacement, similar to the above, various bacteria are mixed into the body, and there is an increased risk of accidents due to operation mistakes. There's a problem. Also, in busy medical settings, it may not always be possible to immediately infuse the second infusion after the first infusion has been completed. It takes time to start the infusion of the infusion solution in the eye. as a result,
There is a problem in that the effect of continuous injection cannot be obtained, or an adverse effect occurs because continuous injection cannot be performed.

Therefore, there is a demand for an apparatus which does not have such a problem, does not require complicated preparations and operations, and can safely and continuously discharge liquids having different compositions.

The present invention solves the above problems and responds to the above demands, and liquids having different compositions can be discharged efficiently and continuously by a simple and safe operation. It is an object to provide a liquid discharge device.

[0007]

According to a first aspect of the present invention for solving the above-mentioned problems, a plurality of inventions are continuously arranged with a partition wall therebetween and each of which has an internal volume variably formed. So as to penetrate through the partition walls of the liquid storage chamber, the liquid storage chamber in which substantially all the liquid has been discharged, and the liquid storage chamber filled with the liquid, and to slightly project into the liquid storage chamber in which the liquid exists. And a double-headed needle provided on a wall body opposite to a partition that separates the leading liquid storage chamber and the adjacent liquid storage chamber.

[0008]

In the continuous liquid discharge device according to the present invention, the plurality of liquid storage chambers are continuously arranged with the partition walls separated from each other, and the respective internal volumes are formed variable.
A liquid is filled in each of the plurality of liquid storage chambers. Further, the double-ended needle penetrates a partition wall between the liquid storage chamber in which substantially all the liquid is discharged and the liquid storage chamber filled with the liquid, and slightly protrudes into the liquid storage chamber in which the liquid exists. Thus, it is provided on the wall body facing the partition wall that separates the leading liquid storage chamber and the adjacent liquid storage chamber.

Therefore, when the wall bodies opposed to the partition wall separating the last liquid storage chamber and the adjacent liquid storage chamber are pressed,
The pressing force is sequentially transmitted to the double-ended needle via the liquid filled in the plurality of liquid storage chambers and the plurality of partition walls separating the liquid storage chambers. Then, the wall body of the partition wall that separates the leading liquid storage chamber and the adjacent liquid storage chamber is pressed. Then, the liquid filled in the leading liquid storage chamber is discharged from the double-ended needle. Further, when a wall body facing the partition wall separating the last liquid storage chamber and the adjacent liquid storage chamber is pressed, the wall body of the partition wall separating the leading liquid storage chamber and the adjacent liquid storage chamber is the double-headed head. It contacts the needle and is thereby penetrated. Then, the liquid filled in the liquid storage chamber adjacent to the leading liquid storage chamber is discharged from the double-ended needle. In this way, the liquids respectively filled in the plurality of liquid storage chambers are sequentially and continuously discharged from the double-ended needle.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A continuous liquid discharge device according to the present invention will be described below with reference to the drawings. The present invention is not limited to the following embodiments.

(First Embodiment) FIG. 1 is a schematic sectional view showing a first embodiment of a continuous liquid discharger according to the present invention.

Continuous liquid discharge device 1 according to the first embodiment
Is a double-ended needle member 5, a first liquid container 10 and a second liquid container 1.
5 and a pusher member 20.

The double-ended needle member 5 has a double-ended needle 6 and a double-ended needle fixing member 7.

The double-ended needle 6 is a hollow needle having sharp cut surfaces on both end surfaces thereof. In this embodiment, the double-ended needle 6 is made of stainless steel. The double-ended needle 6
Is sterilized and stored aseptic until use.

The double-ended needle fixing member 7 has a bottom surface 7a at one end.
Is a tubular body having. The double-ended needle 6 is fixed to the bottom surface 7a while penetrating in the axial direction. A female screw is formed on the inner peripheral surface 7b of the double-ended needle fixing member 7. In this embodiment, the double-ended needle fixing member 7 is made of acrylic resin.

The first liquid container 10 has a first elastic portion 11
It has the 1st member 11 provided with a, and the 1st sliding member 12 provided with the 1st sliding elastic part 12a.

The first member 11 is in the shape of a cylinder having a bottom surface at one end. The bottom surface has a disk portion 11c and a cylindrical portion 11
b and the first elastic portion 11a.

The disk portion 11c has a disk shape, and has a disk center having a center sharing the disk center and a diameter smaller than the inner diameter of the double-ended needle fixing member 7. It has a through hole 11d. The tubular portion 11b is a tubular body having a through hole 11d having the same diameter as the through hole 11d in the disc portion 11c. The first elastic portion 11a
Is a disk body whose cross section perpendicular to the axis has the same shape as that of the through hole 11d. In this embodiment, the first elastic portion 11a is made of silicone rubber.
When the disc portion 11c is used as an axis, the tubular portion 11b is
It is integrally formed on one of the disc surfaces of the disc portion 11c corresponding to the side opposite to the opening end of the first member 11 and concentrically with the center of the disc portion 11c. The first elastic portion 1
1a is integrally formed on the end surface of the tubular portion 11b which is not in contact with the disc portion 11c.

On the outer peripheral surface of the cylindrical portion 11b, a male screw that can be screwed into a female screw formed on the inner peripheral surface 7b of the double-ended needle fixing member 7 is formed. A first stopper 11e having an L-shaped cross section in the axial direction is formed at the opening end of the first member 11. In this embodiment, the first member 11 is made of acrylic resin.

The first sliding member 12 is composed of a disk portion 12c, a cylindrical portion 12b, and the first sliding elastic portion 12a.

The diameter of the disk portion 12c is the first.
It has a disk shape that is the same as the inner diameter of the member 11, and has a circular through hole 12d that has a center that shares the center of the disk and that has a smaller diameter than the through hole 11d at the center of the disk surface. . The cylindrical portion 12b has the through hole 1
It is a cylindrical body having a through hole 12d having the same diameter as 2d.
The first sliding elastic portion 12a is a disk body whose cross section perpendicular to the axial direction has the same shape as that of the through hole 12d. In this embodiment, the first sliding elastic portion 1
2a is made of silicone rubber. The cylindrical portion 12b is integrally formed on one of the disc surfaces of the disc portion 12c so as to be concentric with the center of the disc portion 12c. The first sliding elastic portion 12a is integrally formed on the end surface of the tubular portion 12b which is not in contact with the disc portion 12c.

The first sliding member 12 has the disk portion 12
The peripheral side surface of c is slidably in contact with the first inner peripheral surface 13 of the first member 11, and the disc surface of the disc portion 12c on which the cylindrical portion 12b is formed is opposite to the disc surface 11e. It is placed so that it touches.

In the first liquid container 10, the first liquid 14
Is filled.

The second liquid container 15 has a second elastic portion 16
It has the 2nd member 16 provided with a, and the 2nd sliding member 17 provided with the 2nd sliding elastic part 17a.

The second member 15 has a cylindrical shape having a bottom surface at one end. The bottom surface has a disk portion 16c and a cylindrical portion 16
b and the second elastic portion 16a.

The disk portion 16c has a disk shape, and a circular through hole 16d having a center sharing the center of the disk and having a diameter smaller than that of the through hole 11d is formed at the center of the disk surface. Have. The cylindrical portion 16b is the disc portion 1
6c is a cylindrical body having a through hole 16d having the same diameter as the through hole 16d in 6c. The second elastic portion 16a is a disk body whose cross section perpendicular to the axial direction has the same shape as that of the through hole 16d. In this embodiment, the second elastic portion 16a is made of silicone rubber. The cylindrical portion 16b has the second portion when the disc portion 16c is used as an axis.
The disk portion 16 corresponding to the side opposite to the open end of the member 15.
It is integrally formed on one of the disc surfaces of c so as to be concentric with the center of the disc portion 16c. The second elastic portion 16a is
It is integrally formed on the end surface of the cylindrical portion 16b which is not in contact with the disc portion 16c.

On the outer peripheral surface of the cylindrical portion 16b, a male screw that can be screwed into a female screw formed on the inner peripheral surface of the cylindrical portion 12b of the first sliding member 12 is formed. A second stopper 16e having an L-shaped cross section in the axial direction is formed at the opening end of the second member 16. In this embodiment, the second member 16 is made of acrylic resin.

The second sliding member 17 is composed of a disk portion 17c, a cylindrical portion 17b and the second sliding elastic portion 17a.

The diameter of the disk portion 17c is the second
The member 16 has a disk shape having the same inner diameter as that of the member 16, and has a circular through hole 17d having a center sharing the center of the disk and a diameter smaller than the through hole 16d at the center of the disk surface. . The cylindrical portion 17b has the through hole 1
It is a cylindrical body having a through hole 17d having the same diameter as 7d.
The second sliding elastic portion 17a is a disk body whose cross section perpendicular to the axial direction has the same shape as that of the through hole 17d. In this embodiment, the second sliding elastic portion 1
7a is made of silicone rubber. The cylindrical portion 17b is integrally formed on one disc surface of the disc portion 17c and concentrically with the center of the disc portion 17c. The second sliding elastic portion 17a is integrally formed on the end surface of the cylindrical portion 17b which is not in contact with the disc portion 17c.

The second sliding member 17 has the disk portion 17
The peripheral side surface of c is slidably in close contact with the inner peripheral surface 18 of the second member 17, and the disc surface of the disc portion 17c on which the cylindrical portion 17b is formed is opposite to the disc surface and is in contact with the retainer 16e. Is arranged as.

The second liquid 19 is placed in the second liquid container 15.
Is filled.

The pusher member 20 is a cylinder having a flat additional force disk 22 at one end and a solid bottom surface 21 at the other end.

The three-dimensional bottom surface 21 is composed of a disk portion 21c and a cylindrical portion 21b having a bottom at one end.

The disk portion 21c has a disk shape, and a circular through hole 21d having a center sharing the center of the disk and having a diameter smaller than that of the through hole 17d is formed at the center of the disk surface. Have. The cylindrical portion 21b is the disc portion 2
It is a tubular body having a bottom end and a through hole 21d having the same diameter as the through hole 21d in 1c.

The cylindrical portion 21b has an opening end on one of the disc surfaces of the disc portion 21c corresponding to the side opposite to the additional force disc 22 when the disc portion 21c is the axis and the disc portion 21b. It is integrally formed so as to be concentric with the center of the.

On the outer peripheral surface of the cylindrical portion 21b, a male screw that can be screwed into a female screw formed on the inner peripheral surface of the cylindrical portion 17b of the second sliding member 17 is formed.

-Assembly- To assemble the continuous liquid discharge device 1, first, the first
A female screw formed on the inner peripheral surface of the cylindrical portion 12b of the first sliding member of the liquid container 10 and an outer peripheral surface of the cylindrical portion 16b of the second member 16 of the second liquid container 15. Screw it with the male screw. Thereby, the first sliding member 12 in the first liquid container 10 and the second member 16 in the second liquid container 15 are fixed to each other. Next, the second sliding member 1 in the second liquid container 15
The female screw formed on the inner peripheral surface of the cylindrical portion 17b of No. 7 and the male screw formed on the outer peripheral surface of the cylindrical portion 17b of the three-dimensional bottom surface 21 of the pusher member 20 are screwed together. Thereby, the second sliding member 17 in the second liquid container 15 and the cylindrical portion 21b of the solid bottom surface 21 in the pusher member 20.
And are fixed. Then, the female screw formed on the inner peripheral surface of the double-ended needle member 5 and the male screw formed on the outer peripheral surface of the tubular portion 11b of the first member 11 of the first liquid container 10 are screwed together. . With the above, the assembly of the continuous liquid discharge device 1 is completed.

—Continuous Discharge of Liquid— One end of the double-ended needle 6 in the continuous liquid discharge device 1 assembled as described above is pierced under the skin of the patient, and the pusher member 20 is pressed. .

-Operation- One end of the double-ended needle 6 in the continuous liquid discharge device 1 assembled as described above is inserted subcutaneously into a patient. Then, the first liquid 14 can flow into and out of the discharge target.
Then, the additional force disc 22 in the pusher member 20.
Press. Then, the second sliding member 17 is pressed via the three-dimensional bottom surface 21. Then, the second sliding member 17 presses the second member 16 via the second liquid 19, the second member 16 presses the first sliding member 12, and the first sliding member 12 presses the first member 11 via the first liquid 14. At this time, the first member 1
Since the double-ended needle 6 is penetrated through the first elastic portion 11a in No. 2, the first liquid 14 flows out from the double-ended needle 6 into the discharge target, and accordingly, the first sliding member 12 is discharged.
Is the first liquid container 10 toward the first member 11.
Slides on the inner peripheral surface 13.

Further, when the additional force disc 22 of the pusher member 20 is pressed, the first sliding elastic portion 12a of the first sliding member 12 comes into contact with the double-ended needle 6 and the double-ended needle 6 causes the double-ended needle 6 to contact. Is penetrated. Then, the second
The second elastic portion 16a of the member 16 is the double-ended needle 6
And is penetrated by the double-ended needle 6. At this time,
The tubular portion 12b of the first sliding member 12 is shown in FIG.
As shown in FIG. 7, the first member 11 is housed in the through hole 11d of the tubular portion 11b. Then, the second liquid 19
Flows out of the double-ended needle 6 into the discharge target, and accordingly, the second sliding member 17 slides on the inner peripheral surface 18 of the second liquid container 15 toward the second member 16. afterwards,
The tubular portion 17b of the second sliding member 17 is housed in the through hole 16d of the tubular portion 16b of the second member 16. Thus, the first liquid 14 and the second liquid 19
And are continuously excreted in the patient's body.

-Effect- The continuous liquid discharge device 1 does not require special skill or skill,
As it can be easily assembled, it is easy to handle and practical. When different liquids are continuously discharged by using this continuous liquid discharging device 1, when different liquids are continuously injected into the patient's body, it is not necessary to replace the syringe or infusion bag one by one, and the operation is simple and efficient. Moreover, since it is possible to inject continuously, it is possible to reduce the risk of mistaken discharge operation such as mixing of bacteria and forgetting to discharge, and to greatly reduce the risk and pain to the patient, which is safe.

(Modification of First Embodiment) The present invention is not limited to the first embodiment described above, and various modifications can be made within a range not impairing the object of the present invention.

The first liquid accommodating member has a first member that is penetrated by the double-ended needle and a first sliding member that is formed so as to be intimately slidable on the inner peripheral surface and that is penetrated by the double-ended needle. Any configuration may be used as long as it can contain the first liquid, and the shape, size, etc. are not particularly limited. The material of the first liquid container is not particularly limited as long as it has a required strength. The first liquid container may be wholly transparent or a part thereof may be transparent, and is preferably configured so that the inside can be observed.

The second liquid sliding member is in contact with the first sliding member in a pressable manner, and the second member which is penetrated by the double-headed needle and the second liquid sliding member which is slidably formed in close contact with the inner peripheral surface of the second member. It suffices to have a structure that has a sliding member and can contain the second liquid, and its shape, size, material, configuration, etc., depends on the shape, size, etc. of the first liquid container. It can be appropriately selected.

The pusher member 20 is not particularly limited in its shape, size, material and the like as long as it can press the second sliding member in the second liquid container, and can be selected appropriately according to the purpose. You can The pusher member 20
It may be configured to directly press the second sliding member without using.

The pressing member 20 may be pressed by hand or by using an appropriately selected machine or the like. When using a machine or the like, it is suitable for instilling a liquid. The machine preferably has a configuration capable of appropriately changing pressing conditions such as speed and pressure.

The double-ended needle member 5 and the first liquid container 10
The second liquid container 15 and the pusher member 20 can be connected by various means other than screwing, such as a socket and a coupler.

(Second Embodiment) FIG. 3 is a schematic sectional view showing a second embodiment of the continuous liquid discharger according to the present invention.

Continuous liquid discharge device 1 according to the second embodiment
Is the first liquid container 25, the second liquid container 30, and the pusher member 3.
5 and.

The first liquid container 25 is the first syringe 26 having the double-ended needle 6.

The first syringe 26 is a cylindrical body having a first syringe bottom surface 26a at one end. A first flange portion 26b having an L-shaped cross section in the axial direction is formed at the opening end of the first syringe 26. The double-ended needle 6 is fixed to the center of the first syringe bottom surface 26a in a state of penetrating in the axial direction. In this example,
The first syringe 26 is made of glass. The first syringe 26 is filled with the first liquid 27.

The double-ended needle 6 is a hollow needle having sharp cut surfaces on both end faces thereof. In this embodiment, the double-ended needle 6 is made of stainless steel. The double-ended needle 6
Is sterilized and stored aseptic until use.

The second liquid container 30 includes the second elastic member 3
It is composed of 1a and a second syringe 31.

The second syringe 31 is a cylindrical body having an outer diameter that allows liquid-tight contact with the inner peripheral surface of the first syringe 26. The second elastic member 31 a is a disk body having the same diameter as the inner diameter of the second syringe 31. The second
The elastic member 31a is provided at the one end opening of the second syringe 31. In this embodiment, the second
The elastic member 31a is made of silicone rubber. A second flange portion 31b having an L-shaped cross section in the axial direction is formed at the other end opening of the second syringe 31. In this embodiment, the second syringe 31 is made of glass. The second liquid 32 is filled in the second syringe 31.

The pusher member 35 is a piston elastic member 3
6a and piston 36.

The piston 36 corresponds to the second syringe 3
1 is a rod-shaped body having an outer diameter capable of making liquid-tight contact with the inner peripheral surface of 1. The piston elastic member 36a is a disk body having the same diameter as the piston. The piston elastic member 3
6a is provided at one end of the piston 36. At the other end of the first piston 36, a piston flange portion 36b having an L-shaped cross section in the axial direction is formed. In this embodiment, the piston 36 is made of glass. In this embodiment, the second syringe 31 is previously provided with the piston 36 so that the second syringe 31 can be filled with the second liquid 32 in a state in which air is not mixed therein.
It is installed inside.

Using the continuous liquid discharge device, different liquids are continuously discharged as follows.

-Assembly- To assemble the continuous liquid discharge device 1, first, the second syringe 31 in which the second liquid 32 is filled and the piston 36 is mounted is placed in the first syringe 26. Attach to. This is until the second elastic member 31a in the second syringe 31 comes into contact with the tip of the double-ended needle 6 provided on the first syringe bottom surface 26a in the first syringe. This is performed by pressing the second flange portion 31b. Next, the other end of the double-ended needle 6 is attached to the first liquid 2
Immerse in 7. Then, the second flange portion 31b is pulled toward the piston flange portion 36b. Then, the first liquid 27 passes through the double-ended needle 6 and then flows into the first liquid 27.
Move into the syringe 26. As described above, the assembly of the continuous liquid discharge device 1 is completed.

-Continuous Discharge of Liquid-One end of the double-ended needle 6 in the continuous liquid discharge device 1 assembled as described above is inserted subcutaneously into the patient, and the piston 36 is inserted from the piston flange 36b side. It is performed by pressing.

-Operation- One end of the double-ended needle 6 in the continuous liquid discharge device 1 assembled as described above is inserted subcutaneously into a patient. Then, the first liquid 27 can flow into and out of the discharge target.
Then, the piston 36 is attached to the piston flange portion 3
Press from the 6b side. Then, the piston elastic member 3
6a is the second elastic member 31a via the second liquid 32.
And the second elastic member 31 a presses the first syringe bottom surface 26 a of the first syringe 26 via the first liquid 27. At this time, the first syringe 2
Since the double-ended needle 6 is penetrated through the first syringe bottom surface 26a in 6, the first liquid 27 flows out from the double-ended needle 6 into the discharge target, and the second syringe 31 is The inner peripheral surface of the first syringe 26 is slid toward the first syringe bottom surface 26a of the first syringe 26.

Further, when the piston 36 is pressed from the side of the piston flange portion 36b, the second elastic member 31a in the second syringe 31 causes the double-ended needle 6 to move.
And is penetrated by the double-ended needle 6. At this time,
The second liquid 32 flows out of the double-ended needle 6 into the discharge target, and the piston 36 slides on the inner peripheral surface of the second syringe 31 toward the second elastic member 31a. Finally, as shown in FIG. 4, the first syringe bottom surface 26a and the second elastic member 31a contact each other, and the second elastic member 31a and the piston elastic member 3
The second syringe 31 is housed in the first syringe 26, and the piston 36 is housed in the second syringe 31 in a state of being in contact with 6a. Thus, the first
The liquid 27 and the second liquid 32 are continuously discharged into the body of the patient.

-Effects- The continuous liquid discharge device 1 has the same technical effects as those of the first embodiment.

The second embodiment is not limited to the above, and can be appropriately modified within a range that does not impair the object of the present invention.

(Third Embodiment) FIG. 5 is a schematic sectional view showing a third embodiment of the continuous liquid discharging apparatus according to the present invention.

Continuous liquid discharge device 1 according to the third embodiment
Is the first liquid container 40, the second liquid container 45, and the pusher member 5.
Has 0 and.

The first liquid container 40 is a first bellows body 41 having the double-ended needle 6. The first bellows body 41 is a tubular body, and is a structure in which two tubular bodies formed by stacking open ends having large diameters in two truncated cone-shaped tubular bodies having the same size and shape are connected to each other. Have. Therefore, a bellows composed of two peaks is formed on the peripheral side surface of the first bellows body 41. A disk-shaped first end surface 41a is integrally provided at one opening end of the first bellows body 41, and a first other end surface 41h is integrally provided at the other opening end. The double-ended needle 6 is fixed to the center of the first end surface 41a in a state of penetrating in the axial direction. In this embodiment, the first bellows body 41 is made of soft plastic and is transparent. The first bellows body 4
1 is filled with the first liquid 42.

The double-ended needle 6 is a hollow needle having sharp cut surfaces on both end faces thereof. In this embodiment, the double-ended needle 6 is made of stainless steel. The double-ended needle 6
The first liquid 42 is provided with a stopper (not shown) for preventing liquid leakage at the tip end thereof which is not inserted into the first bellows body 41, and is sterilized until use and stored in an aseptic state. .

The second liquid container 45 is a transparent second bellows body 46 having the same size, shape and material as the first bellows body 41. That is, the second bellows body 46 is a tubular body, and two tubular bodies formed by stacking open ends having large diameters of two truncated cone-shaped tubular bodies having the same size and shape are connected to each other. It has a structure. Therefore, a bellows having two peaks is formed on the peripheral side surface of the second bellows body 46. The second bellows body 4
6 has a disc-shaped second end surface 46a at one opening end.
Is integrally provided, and the second other end surface 46 is provided at the other opening end.
h is integrally provided. The first liquid 47 is filled in the second bellows body 46. In this example,
The second end surface 46a is integrally coupled to the first other end surface 41h of the first bellows body 41.

The pusher member 50 has the second other end surface 46.
It has a thick disc shape with the same diameter as h. In this embodiment, the pusher member 50 is made of silicone rubber. In addition, in this embodiment, one end surface of the pusher member 50 is integrally coupled to the second other end surface 46h of the second bellows body 46.

-Continuous Discharge of Liquids-The continuous discharge of different liquids by the continuous liquid discharge device 1 is as follows.
This is performed by inserting one end of the double-ended needle 6 in the continuous liquid discharge device 1 into the patient's skin subcutaneously and pressing the exposed end surface of the pusher member 50.

-Operation- In the continuous liquid discharge device 1, the stopper is removed from the tip of the double-ended needle 6 having a stopper for preventing liquid leakage, and the tip is inserted subcutaneously into the patient. Then, the first liquid 42 can flow into and out of the discharge target. Then, the pusher member 50
Press the exposed end face at. Then, the second other end surface 46h presses the first other end surface 41h integrally coupled to the second end surface 46a through the second liquid 47, and the first other end surface 41h causes the first liquid. 42 through the first
The end surface 41a is pressed. At this time, the first bellows body 41
Since the double-ended needle 6 is penetrated through the first end surface 41a in the above, the first liquid 42 flows out from the double-ended needle 6 into the discharge target. With the discharge of the first liquid 42, the first liquid 42
The other end surface 41h moves toward the double-ended needle 6 side and comes into contact therewith, so that it is penetrated. Then, the second liquid 47 is subsequently discharged. Then, with the discharge of the second liquid 47, the second other end surface 46h moves toward and contacts the double-ended needle 6 side and is penetrated thereby, and at the same time, is integrally provided on the second other end surface 46h. The pusher member 50 is also penetrated by the double-ended needle 6. Thus, the first liquid 42 and the second liquid 47
Are continuously excreted into the patient's body.

Here, of the four truncated cone-shaped cylinders forming the peripheral side surface of the first bellows body 41, the first end surface 41 is
The inner peripheral surface of the cylindrical body closest to a is
The inner peripheral surface 41b is defined as the inner peripheral surface 41b, the inner peripheral surface of the cylindrical body at the second closest position is the 1-2 inner peripheral surface 41c, and the outer peripheral surface is the first
-2 outer peripheral surface 41d, the outer peripheral surface of the cylinder at the third closest position is the first-third outer peripheral surface 41e, and the inner peripheral surface is the first-third inner peripheral surface 41f. The inner peripheral surface of the body is referred to as a first to fourth inner peripheral surface 41g, and the outer peripheral surface thereof is referred to as a first to fourth outer peripheral surface 41i. Also, the second
Of the four truncated cone-shaped cylinders that form the peripheral side surface of the bellows body 46, the inner peripheral surface of the cylinder closest to the second end surface 46a is the 2-1 inner peripheral surface 46b, and The outer peripheral surface is the 2-1 outer peripheral surface 46i, the inner peripheral surface of the cylindrical body at the second closest position is the 2-2 inner peripheral surface 46c, and the outer peripheral surface is the 2-2 outer peripheral surface 46d. The outer peripheral surface of the cylindrical body at the position closest to the second is the 2-3 outer peripheral surface 46e, the inner peripheral surface is the 2-3 inner peripheral surface 46f, and the inner peripheral surface of the cylindrical body at the farthest position is the second. -4 inner peripheral surface 46g.

The state of the continuous liquid discharge device 1 after the first liquid 42 and the second liquid 47 are discharged is as shown in FIG. That is, the 1-1 inner peripheral surface 41b and the 1-2 inner peripheral surface 41c overlap with each other, the 1-2 outer peripheral surface 41d and the 1-3 outer peripheral surface 41e overlap with each other, and the first- 3 inner peripheral surface 41f and said 1-4 inner peripheral surface g
Overlap with each other, and the first to fourth outer peripheral surfaces 41i and the second
-1 The outer peripheral surface 46i overlaps with each other, and the 2-1 inner peripheral surface 4
6b and the 2-2 inner peripheral surface 46c overlap, the 2-2 outer peripheral surface 46d and the 2-3 outer peripheral surface 46e overlap, and the 2-3 inner peripheral surface 46f and the 2nd Four
The inner peripheral surface 46g is in an overlapping state.

-Effects- The continuous liquid discharge device 1 has the same technical effects as those of the first embodiment.

The third embodiment is not limited to the above, and can be appropriately modified within a range that does not impair the object of the present invention.

In the first to third embodiments, the double-ended needle has a hollow needle whose one end is directly placed under the skin of a patient or the like, or one end is placed under the skin of the patient. It may be connected to the other end of the infusion tube. In the former case, it is suitable to continuously discharge the liquid in the injection form, and in the latter case, it is suitable to continuously inject the liquid in the drip form.

The first liquid and the second liquid in the first to third embodiments can be appropriately selected according to the purpose. For example, each of these is different
It may be a seed vitamin preparation or a heparin-containing solution and saline.

The continuous liquid discharging device of the present invention can be suitably used for discharging liquid to patients, testers, experimental animals, etc. in treatment or clinical tests, but it can be used in various fields other than these. it can.

[0079]

According to the present invention, it is possible to provide a continuous liquid discharge device capable of exerting the following excellent technical effects. Since the continuous liquid discharging device has a simple structure, it requires no special skill or skill when used, and is easy to handle and practical. Moreover, since it is not necessary to replace the syringe, the infusion bag, and the like when discharging the liquid, different liquids can be discharged continuously and efficiently by a simple operation. Therefore, when this is used for instillation or injection into the living body, it is possible to continuously inject the drug solution of different composition into the patient's body without mixing various bacteria, etc. It is safe because it reduces the risk of mistakes and significantly reduces the risk and distress of patients. The continuous liquid discharge device has a high utility value particularly in the medical field.

[Brief description of drawings]

FIG. 1 is a cross-sectional schematic explanatory view showing a first embodiment of a continuous liquid discharge device according to the present invention.

FIG. 2 is a schematic cross-sectional explanatory view showing a state after the liquid is discharged using the continuous liquid discharging device according to the first embodiment.

FIG. 3 is a schematic cross-sectional explanatory view showing a second embodiment of the continuous liquid discharge device according to the present invention.

FIG. 4 is a schematic cross-sectional explanatory view showing a state after the liquid is discharged by using the continuous liquid discharging device according to the second embodiment.

FIG. 5 is a schematic cross-sectional explanatory view showing a third embodiment of the continuous liquid discharging device according to the present invention.

FIG. 6 is a schematic cross-sectional explanatory view showing a state after discharging liquid using the continuous liquid discharging device according to the third embodiment.

[Explanation of sign]

1 ... Continuous liquid discharging device, 5 ... Double-headed needle member, 6 ...
・ Double-ended needle, 7 ... double-ended needle fixing member, 7a ... bottom surface,
10 ... 1st liquid container, 11 ... 1st member, 11a
... 1st elastic part, 11b ... Cylindrical part, 11c ... Disk part, 11d ... Through hole, 11e ... Withdrawal prevention, 12
... First sliding member, 12a ... First sliding elastic portion, 1
2b ... cylindrical part, 12c ... disc part, 12d ... through hole, 13 ... inner peripheral surface, 14 ... first liquid, 15 ...
-Second liquid container, 16 ... Second member, 16a ... Second elastic portion, 16b ... Cylindrical portion, 16c ... Disc portion, 1
6d ... through hole, 16e ... second retainer, 17 ...
-Second sliding member, 17a ... second sliding elastic portion, 17b
... Cylinder part, 17c ... Disc part, 17d ... Through hole, 18 ... Inner peripheral surface, 19 ... Second liquid, 20 ...
Pusher member, 21 ... 3D bottom surface, 21b ... Cylindrical portion, 2
1c ... disc surface, 21d ... through hole, 22 ... additional force disc, 25 ... first liquid container, 26 ... first syringe, 26a ... first syringe bottom surface, 26b ...
1st flange part, 27 ... 1st liquid, 30 ... 2nd liquid container, 31 ... 2nd syringe, 31a ... 2nd elastic member, 31b ... 2nd flange part, 32 ... Second
Liquid, 35 ... Pusher member, 36 ... Piston, 36a
... Piston elastic member, 36b ... Piston flange portion, 40 ... First liquid container, 41 ... First bellows body, 41a ... First end face, 41b ... 1-1 Inner peripheral surface, 41c ... 1-2 Inner peripheral surface, 41d ... 1st-
2 outer peripheral surface, 41e ... 1st-3 outer peripheral surface, 41f ...
1st-3 inner peripheral surface, 41g ... 1st-4 inner peripheral surface, 41h
... 1st other end surface, 41i ... 1st-4 outer peripheral surface, 42
... first liquid, 45 ... second liquid container, 46 ... second liquid container, 46a ... second end face, 46b ... second
-1 inner peripheral surface, 46c ... 1-2 inner peripheral surface, 46d ...
-1-2nd outer peripheral surface, 46e ... 1-3rd outer peripheral surface, 46
f ... 1-3 inner peripheral surface, 46g ... 1-4 inner peripheral surface, 46h ... second other end surface, 41i ... 2-1 outer peripheral surface, 50 ... pusher member ,

Claims (1)

[Claims] 1. Arranged continuously with a partition wall between each other,
And a plurality of liquid storage chambers each having an internal volume variably formed, and penetrates a partition wall between the liquid storage chamber in which substantially all the liquid has been discharged and the liquid storage chamber filled with the liquid, and A double-ended needle provided on a wall body facing a partition wall separating the leading liquid storage chamber and an adjacent liquid storage chamber so as to slightly project into the liquid storage chamber in which the liquid is present. Continuous liquid discharge device.