JP2003325663A - Cartridge injector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable injector with less sliding resistance allowing an entire injector 21 to be disposed to solve a problem with infectious diseases, formed in such a structure that only contaminated portions are treated and portions not contaminated are recycled to reduce waste portions. <P>SOLUTION: In this cartridge injector 2, the chemical storage portion 24 of the injector 21 is formed in an independent bellows cartridge container 10, the cartridge container is combined with an outer tube 9 and a plunger 13, and a chemical fill-out member 1 is connected to the combination thereof to integrally form these parts. When the chemical is released by the plunger 13, the cartridge container 10 is contracted and a hook 11 installed in the cartridge container is pressed into a hook receiver 7 and fixed in the contacted state. Then, the only the cartridge portion is separated from the cartridge injector and treated. The outer tube 9 and the plunger 13 can be recycled by replacing the cartridge at the chemical storage portion. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a structure in which an entire syringe can be treated only by a problem such as a disposable disposable syringe that is subject to infection or the like, and only a problematic portion that is a target of contamination of the syringe. The part that is not directly related to pollution is a cartridge type syringe for the purpose of reusing and reducing the bulk and discharge amount of the entire discarded syringe.

[0002]

2. Description of the Related Art A syringe 21 which is disposable due to problems such as infectious diseases is generally a cylinder portion 23 or a piston portion 2.
When the entire syringe is constructed by combining the five, the drug solution storage portion 24 is also formed, and since the outside of the syringe and the part that stores the drug solution are in the front and back in one body, there is a possibility of contamination. Since only the storage part can not be processed separately,
The entire syringe is subject to disposal, and the size of the discarded syringe remains the same as it was before use, and the larger the syringe, the greater the sliding resistance.

Since the injectable drug is stored in a vial container or the like, it is necessary to suck the drug solution through the cap and into the syringe each time an injection is performed, which causes the trouble of transfer and the sharpness of the needle tip to deteriorate. In addition, the container in which these chemicals are enclosed causes the generation of extra waste.

Syringes and the like of the type in which the drug solution is sealed in advance are
There are problems such as the possibility that silicon oil or the like applied to the inner wall of the cylinder or the piston portion in order to reduce the sliding resistance will dissolve into the drug solution, and that it will be difficult to divert it to other uses as a syringe.

Until the enlarging medical waste is entrusted to a specialized disposal company and collected, the place of temporary storage and the processing cost are problems, and only the part which may be contaminated is limited. , The development of a syringe that can be treated has been awaited. In the prior art search for similar inventions, the following four prior arts were found to be relevant search results. The research materials are open patents, published / registered utility model gazettes, and the search period is from January 1980 to September 30, 2001.
Japanese Unexamined Patent Publication No. 08-229121 and Japanese Patent Publication No. 09-80907
9 ・ Special table 2001-511404 ・ Shokaisho 56-12
5256. Among these four cases, in particular, special table No. 09-809
The ample syringe and blood sampling syringe of 079 (Patent Publication No. 2990380) are similar to the present invention in the basic idea that waste is treated compactly.
In these inventions as well, although a part of the syringe is bellows-shaped, there is a problem in the stability of the shape of the syringe, and there is a risk that the main body of the syringe will be bent, etc., depending on how the force of the finger pushing part is applied. There is also a problem that it is not possible to make the bellows part in a compressed state at the same time as administering the drug solution, and if only the drug solution is administered and only the syringe is processed again, the work will be troublesome twice. Since the entire ampoule-use syringe is subject to disposal, the size is not so compact, and the surface of the syringe is uneven and the bellows part is exposed.
The syringe is difficult to handle and is difficult to handle, and various problems are expected such that the drug solution contained in the ampoule syringe can be used only in the form of a syringe, but the present invention has solved these problems.

[0006]

In order to solve the above problems, the present invention provides a structure in which a contaminated part of a syringe can be treated in a limited manner, and a part which is not directly related to contamination can be reused. By doing so, the bulk of the generated waste and the total amount of discharge can be reduced, the storage place of the waste and the processing cost can be reduced, and at the same time, the labor for transferring the drug solution to the syringe,
The purpose is to develop a syringe with low sliding resistance.

[0007]

In order to solve the above-mentioned problems, the present invention has a structure in which a syringe is composed of four parts, and the drug solution storage part is a retractable and detachable independent cartridge container containing a drug solution. By combining the outer cylinder, the plunger, and the drug solution ejecting member, a syringe having an integrated structure is formed, and the cartridge container is compressed and contracted at the same time as the drug solution is discharged, and can be separated and recovered from the syringe body.

The cartridge container serving as the drug solution storage portion is formed into a bellows shape, and in order to maintain the contracted state of the cartridge container after discharging the drug solution, a hook for compression fixing is provided in the cartridge container or a cap capable of sealing is provided. A container for storing a liquid medicine cartridge container, such as a method for holding a compressed state by a thing or a shape memory plastic hook, which can maintain a compressed state by being compressed, depending on the shape and material of the container constituting the cartridge container. And

An anti-rotation plate is provided at the tip of the cartridge container so that it can be easily received and fixed by the tip of the outer cylinder.
By providing a rail-shaped guide on the inner wall of the outer cylinder that incorporates the cartridge container, reducing the contact surface between the cartridge container and the inner wall of the outer cylinder, and reducing the occurrence of sliding resistance when releasing the chemical solution,
A discharge hole was provided to prevent the chemical liquid leaking into the cylinder from backflowing due to damage of the cartridge container or the like.

The cartridge container for collecting blood is an empty container, and the compression and fixing hook receiver has a two-stage structure. The newly installed temporary compression and fixing position is compressed to the hook receiver, and the hook at the temporary fixing position is sucked. In order to make it easy to disengage at times, the hook receiver at the temporary compression fixed position has a rounded shape, and the hook at the temporary compression position is easily removed.

[0011]

Embodiments of the present invention will be described with reference to the drawings. 1 is a sectional view of a cartridge injector 27 according to an embodiment of the present invention, and FIG. 2 is a sectional view before setting the cartridge injector shown in FIG.

The drug solution storage portion of the cartridge type syringe 27 of the present invention is an independent bellows-shaped cartridge container 1.
0 (the cartridge container may be a spiral container, and the shape of these containers is not limited to a round shape, a triangle, or a quadrangle), and an outer cylinder 9 into which the container is installed and a plunger 13 connected to the cartridge container 10 or The cartridge container 10 which is composed of the chemical liquid pouring member 1 having a connector and serves as a chemical liquid storage portion is preliminarily filled with the chemical liquid, and is made of a material having elasticity such as a rubber cap 3 which is processed so that a needle can easily penetrate therethrough. The drug solution dispensing member, which is sealed with a cap and is connected to the other side of the cap (the cap is removable, of course, is sterilized), is provided with a cap penetrating needle 2, and the drug solution is released at the same time as connecting. Since it is possible to do so, there is no need to transfer the drug solution contained in the cartridge container, so there is no risk of spilling the drug solution or invasion of bacteria etc. Easily performed.

The cartridge container after the use of the chemical liquid is compressed, and there is no leakage of the chemical liquid or the like from the trace of the needle through which the cap penetrating needle of the chemical liquid pouring member is pulled out.
Disposal can be done without polluting the area around the syringe.

Since the cartridge container is filled with the chemical solution from the beginning and the bellows portion is in an expanded state, the relationship between the hook and the hook receiver for holding the contracted state provided in the cartridge container is in a free state. It is described as a structure in which the hook 11 is automatically pushed into the hook receiver 7 which is the main compression fixing position by discharging and contracting the liquid medicine, and the cartridge container can be kept in a contracted state. , A method of maintaining a compressed state by using a cap that can be tightly closed, or an object having a function of maintaining a compressed and contracted state without a fastener such as a hook, such as shape memory plastic. It goes without saying that the hooks are not limited in shape and fixing method as long as they have any structure.

The cartridge part to be discarded is separated and collected in a compact form, and the outer cylinder and the plunger are reused as a cartridge adapter to reduce the generation of waste as a syringe. It was a feature of.

The outer cylinder and the plunger of the cartridge type syringe are merely related to support the discharge of the liquid medicine filled in the cartridge container, and have a function of storing the liquid medicine like a conventional syringe and a cylinder for extruding the liquid medicine. Unlike the relationship between the piston and the piston, there is no need for close contact, so sliding resistance is unlikely to occur.

The cartridge container shown in FIG. 3 is a cross-sectional view of a cartridge syringe of a type mainly for suctioning blood and the like, in which a cartridge container which does not enclose a drug solution is compressed to a temporary compression fixing position (a drug solution is not put therein). If the cartridge is put into a compressed state for blood collection as it is, there is a possibility that it will be compressed to the compression fixed position, so it has a structure that can be temporarily fixed in advance at an appropriate position.) A hook receiver 28 having a rounded shape at a temporary compression fixed position is provided, and the hook temporarily fixed to the hook receiver has a structure that is easily detached when sucking blood or the like. The cartridge container that will be used as it is and will be discarded after the measurement of the sample, etc.
The main compression fixing position 7 is compressed and discarded. Figure 4
The outer cylinder shown in is a cross-sectional view of the outer cylinder in which sliding resistance is particularly unlikely to occur (there is no problem even if there is no chemical solution discharge hole or rail-shaped guide). By providing the rail-shaped guide 16 on the inner wall of the outer cylinder, , The cartridge container 10 is a rail-shaped guide 16
The cartridge container 10 is supported by the outer cylinder 9
The contact surface with and becomes smaller, and sliding resistance is less likely to occur.

A chemical liquid discharge hole 15 is provided in the outer cylinder so that the chemical liquid leaking into the outer cylinder does not flow back into the cartridge container again due to the damage of the cartridge container or the like.

FIG. 5 is a view seen from the front of the cartridge type syringe, and a rotation preventing plate 6 is provided to prevent the cartridge container 10 from idling in the outer cylinder 9 when the cartridge container is assembled and fixed in the outer cylinder. A cartridge container rotation-preventing plate receiver 17 is provided at the outer cylinder tip 14, and the groove is formed so as to receive the cartridge container rotation stopper plate receiver 17. Over the cap 3 (can be connected even if the cap is removed)
By connecting to the front part of the cartridge container and the connector, the connector is fixed to the outer cylinder so as to sandwich the outer cylinder tip portion 14, and at the same time, the inner needle of the chemical liquid pouring member penetrates the cap of the cartridge container, It is ready for release.

In an emergency or the like, it is possible to directly connect the chemical liquid pouring member to the cartridge container and use it as it is, without using the outer cylinder or the plunger.

The chemical solution outlet of the cartridge container has a connector capable of withstanding pressure such as high-speed injection, but when the conventional type insertion type 22 is used, the same chemical solution injection portion as that of the conventional type syringe is used. By attaching the connector provided with the outlet as a connection adapter, the conventional chemical liquid dispensing member can be used as it is.

The main body of the cartridge container is made of a chemical resistant synthetic resin such as polyethylene or polypropylene, and the outer cylinder is reused as an adapter for the cartridge container, so that the cartridge container can be observed and scratches are less likely to occur. It is said that tempered glass, etc. with good transparency is suitable, and synthetic resin that can withstand compression of the cartridge container is suitable for reuse in the plunger, but if it is one that also has the above conditions. This is not the case.

The cartridge container is a waste treatment,
Integral molding with the same material is desirable, but if difficult, it may be made by combining with different materials, etc., the joint part has a structure that can withstand the invasion and pouring pressure of various bacteria, and the joint part cannot be opened Welded construction is preferred.

FIG. 6 is a view of the cartridge type syringe seen from the rear side, showing the relationship between the outer cylinder 9 and the cartridge container 10. The outermost side 8 of the cartridge container 10 is the outer cylinder 9.
Since the rail-shaped guide 16 provided on the inner wall is supported by the height of the guide in a floating manner, the contact portion between the inner wall of the outer cylinder and the cartridge container is reduced, and the sliding resistance at the time of discharging the chemical liquid is unlikely to occur. Also has a groove function of guiding the chemical solution to the discharge hole 15.

In these cartridge syringes, when the sliding resistance becomes excessively low due to manual operation or the like, which causes inconvenience in handling, and when an appropriate sliding resistance is required, an arbitrary sliding resistance is required at the plunger portion. It can also be set.

A hook and a hook receiver are provided in accordance with the compression width of the cartridge container (the compression width can be arbitrarily adjusted),
By providing the hook receiving side in multiple stages, it is possible to stop at any position while carving only the number of stages (the hook hanging condition can be adjusted).

FIG. 8 shows a bottle-dedicated hook 26 attached to the plunger connecting portion 12 at the rear of the cartridge container 10 when the cartridge container is used as a drip bottle.

The present invention can be applied to any type of container as long as it can be handled in the same manner as a cartridge type syringe, and the technique for maintaining the compressed state of the cartridge container is a combination of an outer cylinder and a plunger. However, it can be used alone and has a wide range of applications.

For example, caulking agents, bonds, greases, etc. used in the field of construction, foods, etc. are also applied to containers such as mayonnaise and ketchup, and PET bottles which are problematic in bulky containers. In addition to being able to do things, it is possible to make the container gradually smaller, and finally it can be compressed compactly and discarded, so it is suitable for containers such as synthetic resins that are disposable after use.

In addition, the present invention can be applied to a container made of a material having a bellows-like function and the like, which is desired to be discarded by compressing it to reduce its bulk.

For example, if the surface of the container is bellows and it looks bad or is difficult to handle, an expandable and retractable cover like an antenna, which is used for radio, etc., is attached to the surface of the bellows container, Due to the structure, the bellows part is contracted in a form that is linked to the size of the outer cover, so that the container can be set to any size (stepless).

[0032]

As is apparent from the above description, in the cartridge type injector of the present invention, the outer cylinder and the plunger are reused as the adapter of the cartridge container, and only the cartridge container portion is compressed. It can be processed in a compact form.

In the cartridge container (chemical liquid sealed type), since the chemical liquid discharging member is connected through the cap, it is not necessary to transfer the chemical liquid like a conventional syringe, so that the chemical liquid may be spilled or bacteria may be lost. It is possible to treat the target portion, which causes a problem due to the contamination of the syringe, only in the cartridge container without fear of invading or breaking the injection needle at the time of administering the liquid medicine.

As a result, the discharge of waste as a syringe is reduced, and the storage space for waste and the processing cost can be greatly reduced.

By unifying the drug solution enclosing container with a cartridge type container, it is easy to manage the stock as a combined type drug solution accommodating container without distinguishing between the injecting drug and the instilled drug and the enclosed container. In addition, there is no risk of mixing with other chemicals such as silicone oil, sliding resistance is hardly generated, the setting of injectables is simplified, and useless empty containers filled with the chemicals are eliminated.

There is no liquid leakage from the portion of the cartridge container, which is attached over the cap, from which the drug solution dispensing member is pulled out,
The structure around the cartridge container and the syringe was designed so as not to be contaminated by the leaked liquid medicine.

When the cartridge container is damaged, the leaked chemical liquid is discharged from the discharge hole and does not flow back into the cartridge container.

A cartridge container used for blood collection or the like is prepared in a form that it is previously compressed to a temporary compression fixing position (not containing a drug solution or the like), and can be used as it is by collecting blood or the like. There is no need to move the dedicated collection container and the like, and there is no need for an extra waste container.At the time of disposal, it can be compressed like a chemical-filled type cartridge container and treated as a compact waste. It is possible.

Like the conventional syringe, the device such as an automatic injector is used as it is.

The manufacturing of containers such as cartridges does not require strict precision as in the case of conventional syringe molds, and pharmaceutical manufacturers, etc. only need to sell the cartridge parts, so the packaging is compact. It is possible to reduce transportation and manufacturing costs.

[Brief description of drawings]

FIG. 1 is a sectional view of a cartridge type syringe of the present invention.

FIG. 2 is a sectional view of the cartridge type syringe of the present invention before being set.

FIG. 3 is a cross-sectional view of a suction type for collecting blood and the like with the cartridge-type syringe of the present invention.

FIG. 4 is a sectional view of an outer cylinder of the cartridge type injector of the present invention.

FIG. 5 is a front view of the cartridge type injector of the present invention.

FIG. 6 is a view of the cartridge type syringe of the present invention seen from the rear surface.

FIG. 7 is a cross-sectional view of a conventional syringe.

FIG. 8 is a front view of a dedicated hook when the cartridge container of the present invention is used as a drip bottle.

[Explanation of symbols]

1. A chemical liquid pouring member with a connector that incorporates a cap penetrating needle. 2. Cartridge cap penetrating needle. 3. A cap or seal that seals the chemical. 5, drug solution discharge part 6, cartridge rotation prevention plate 7, hook receiver 8 at main fixing position, outermost part 9 of cartridge, cartridge syringe outer cylinder 10, drug solution storage cartridge 11, compression fixing hook 12, plunger connection Part 13, Plunger 14, Outer Cylinder Tip Part 15, Chemical Solution Discharge Hole 16, Rail-shaped Guide 17, Cartridge Rotation Prevention Plate Receiver 21, Conventional Syringe Overall View 22, Conventional Insertion Type Chemical Solution Dispensing Section 23 , A conventional syringe cylinder part 24, a conventional syringe liquid storage part 25, a conventional syringe piston part 26, a dedicated hook 27 for a drip bottle container, an overall view of a cartridge type syringe 28, a hook receiver at a temporarily fixed position

Claims (6)

[Claims] Claim: What is claimed is: 1. An external cylinder for a cartridge container, characterized in that the container for storing a liquid medicine of a syringe is an expandable and detachable independent cartridge container capable of containing a liquid medicine and the like and provided with a contracted state holding function. Cartridge-type syringe that becomes an integral structure by incorporating it in the chamber and connecting the plunger and the drug solution discharge member. 2. A cartridge container serving as a drug solution storage portion is formed into a bellows shape, and a compression fixing hook and a hook receiver are provided.
The cartridge type syringe according to claim 1, wherein the cartridge container is filled with a drug solution. 3. The cartridge injector according to claim 1, wherein the cartridge container is a container having a function such as shape memory plastic. 4. The cartridge injector according to claim 1, wherein the cartridge container is provided with an anti-rotation plate so that the cartridge container can receive the anti-rotation plate. 5. A rail-shaped guide and a discharge hole are provided in the outer cylinder itself on the inner wall of the outer cylinder in which the cartridge container is incorporated.
A cartridge injector as claimed in claim 1, characterized in that 6. The cartridge injector according to claim 1, wherein the compression fixing hook receiver of the cartridge container for blood collection has a two-stage stance, and the hook receiver at the newly provided temporary compression fixing position has a rounded shape. .