JP3337099B2 - Disposable drug infusion container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a disposable drug injection container.

[0002]

2. Description of the Related Art Conventionally, as a drug solution storage container having a function as a drug solution injector, a body portion of a container body provided with a cylindrical portion is crushed with a finger to inject a drug into a body. Container (see Japanese Utility Model Laid-Open No. 3-7832) or a container in the form of an injector comprising an outer cylinder portion and a piston portion inserted therein (Japanese Utility Model Application Laid-Open No. 63-15664).
No. 7) is known.

However, containers of the above type are:
Although it is frequently used because of its simple structure, it has a drawback in that it is inferior in administration reliability and is not suitable for use when the dosage must be accurate. In addition, the injector type container of the type is sufficient in that a certain amount of drug can be injected, but since the drug solution storage member and the piston portion member are separate, the In order to prepare a preparation which can be used immediately by filling the container, it is impossible to use the container as it is.

[0004]

DISCLOSURE OF THE INVENTION The present inventors have conducted intensive studies to provide a disposable drug infusion container, and as a result, a prescribed amount of drug can be reliably injected into the body, and as a drug product filled with the drug. We succeeded in developing an excellent drug injection container that can be provided.

That is, according to the present invention, a medicine storage section cylinder having a medicine delivery port sealed at one end by a detachable sealing means, and the cylinder are integrally engaged so as to be separable,
The present invention relates to a disposable drug injecting container, comprising: a drug delivery rod that is inserted into a separating opening of a cylindrical body from a separating portion after the separating and is slidably fitted. The present invention also relates to the medicine injecting container, wherein the integral engagement is engagement by a thin film. Further, the present invention is characterized in that the cylindrical body has a large-diameter flange on a central outer wall in a longitudinal direction thereof, and a small-diameter flange on an end outer wall on a side where the rod-shaped body is fitted. And a container for injecting a drug. The present invention also relates to the above-mentioned container for drug injection, characterized in that the rod-shaped body has an annular groove in the outer wall near the end of the separation portion. Further, the present invention relates to the container for injecting a medicine as described above, wherein the cylindrical body has a small groove in the length direction on the inner wall at the end of the cutoff portion. Further, the present invention is characterized in that the rod-shaped body has one or two or more small projections within a range extending to an axial length of a small groove provided on the inner wall of the end of the cylindrical body separating portion. It relates to a container for injection. Furthermore, the present invention relates to the above-described container for drug injection, wherein the rod-shaped body has an end portion formed in a shape that is easy to press when the drug is delivered. The present invention also relates to the above-mentioned container for injecting medicine, wherein the sealing means is a cap. Further, the present invention relates to the above-mentioned container for injecting a medicine, which is used for an enema. According to the present invention, there is provided a disposable synthetic resin medicine injecting container, in which a medicine container cylindrical body having at one end a medicine delivery port sealed by detachable sealing means, and another end of the cylindrical body. The drug delivery rod that is slidably fitted, the cylindrical body and the rod are engaged by a detachable thin film, and the cylindrical body has a large-diameter central outer wall in its length direction. A flange is provided, and a small-diameter flange is provided on an end outer wall of the cylindrical body on the side where the rod-shaped body is fitted, and a small groove is provided on the end inner wall in the length direction, An annular groove is provided in an end outer wall of the rod-shaped body on the side fitted to the cylindrical body, and the end has a shape capable of sliding along the inner wall of the cylindrical body. Formed on the inner wall of the cylindrical body from the end. An arbitrary number of small protrusions are provided on the outer wall of the rod within a range extending to the axial length of the small groove, and the other end of the rod has a shape that is easy to press when delivering the medicine. A container for injecting a medicine characterized by being formed is provided.

The points listed in 1) to 7) of the novel container for injecting a chemical solution according to the present invention are extremely characteristic technical means in terms of structure and use. 1) The liquid medicine storage section cylindrical body and the liquid medicine delivery rod are engaged by a detachable thin film. In use, the thin film is cut off, and the rod is inserted into the cylinder and the liquid medicine is delivered. It has a structure. 2) A large-diameter flange is provided on the outer wall at the center in the longitudinal direction of the medicinal solution storage portion cylindrical body. When the end of the medicinal solution outlet side of the cylindrical body of the injector is inserted into the anus during use, The large-diameter flange serves as a stopper, and the insertion is stopped at the position of the large-diameter flange.

[0007] 3) A small-diameter flange is provided on the outer wall of the end of the cylindrical body of the liquid medicine storage section on the rod-shaped body fitting side. It plays a role in facilitating the delivery of the drug solution by pressing with the thumb at the other end of the body. By the action of the two flanges, the user can inject a predetermined amount of the medicinal solution into the body without waste, independently of the hand of another person. 4) Since a small groove is provided on the inner wall of the liquid medicine storage section cylindrical body, when the rod is inserted into the cylinder, air escapes from the small groove and the rod is easily inserted into the cylinder.

[0008] 5) In the chemical liquid delivery rod-shaped body, an annular groove is provided on an end outer wall on a side to be fitted to the cylindrical body, whereby burrs generated when the thin film is separated are stored in the chemical liquid storage. By fitting into this groove when fitting to the partial cylindrical body, the adhesion between the cylindrical body and the rod-shaped body can be ensured. 6) In the rod-shaped body for delivering a drug solution, the rod-shaped body within a range from the end of the rod-shaped body on the side fitted to the cylindrical body to the axial length of the small groove provided on the inner wall of the cylindrical body. An arbitrary number of small projections are provided on the outer wall, and this allows the tip of the rod to be partially fitted to the cylinder, so that the rod can be stored in the cylinder by a quick operation. It is possible to prevent the delivery of the chemical solution.

[0009] 7) The end of the rod-shaped body on the side fitted to the chemical storage cylinder is formed in a slidable shape according to the inner diameter of the cylinder, whereby the rod-shaped body is inserted into the cylinder. It is possible to reliably move the chemical solution when inserting and pushing out the chemical solution. 8) The other end of the rod-shaped body is formed in a shape that is easy to press at the time of delivery of the drug solution, and the index finger and the middle finger are put on the small-diameter flange, and a thumb is put on this end and pressed. Thereby, the supply of the chemical solution can be performed smoothly.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of a drug solution injecting container according to the present invention, which comprises a drug solution storing cylinder 2, a drug solution delivery rod 3, and a separable thin film 4 which engages these. 1 shows a container body 1 made of synthetic resin. The thin film 4 is a thin film that can be cut by a small force, but is designed to be sufficiently resistant to a load due to transportation, a load due to loading, etc. in a final form as a medicine after a chemical solution is stored.

A small-diameter flange 6 is provided at the end of the cylinder body 2 of the container body 1 on the side to which the rod-shaped body 3 for chemical solution delivery is fitted. A large-diameter flange 5 is provided on a central outer wall in the length direction. The large-diameter flange 5 serves as a stopper at the anal entrance when the end of the container main body 1 having the chemical solution outlet is inserted into the anus. The container tip can be easily inserted into the anus by the operation. Chemical liquid storage cylinder 2
The periphery of the chemical solution outlet 7 is chamfered so as not to damage the anus when inserting the tip of the container into the anus.

The chemical liquid storage cylindrical body 2 of the chemical liquid delivery rod 3
The end on the side that fits with is a drug solution delivery surface, and an annular groove is provided on the end outer wall of the rod that fits on the cylindrical body, and the end is The rod is formed in a shape capable of sliding along the inner wall of the cylindrical body, and the shaft of a small groove 11 provided on the inner wall at the end of the cylindrical body 2 is formed on the outer peripheral surface of the rod end. An arbitrary number of small projections a are provided within a range corresponding to the length in the direction. On the other hand, the other end of the drug solution delivery rod 3 is formed in a shape that is easy to press when delivering the drug solution, and serves as a pressing surface 9. The chemical liquid delivery rod 3 does not have to be a completely cylindrical rod so as to maintain the strength of the entire body, reduce the weight, and save material. May have a non-cylindrical shape such as a cross as shown in FIG. 5C.

FIGS. 2A and 2B show an example of a state in which a small groove in the length direction is provided on the inner wall at the end of the chemical liquid storage cylinder 2 on the side where the chemical liquid delivery rod 3 is fitted. Things. As described above, the small groove serves to facilitate the insertion of the rod-shaped body into the cylindrical body when air escapes from the small groove when the chemical-solution delivery rod-shaped body 3 is inserted into the thin film 4. It is.

FIG. 3 shows an annular groove 12 in the outer wall of the chemical solution delivery rod 3 on the side fitted to the chemical solution storage cylinder 2.
1 shows an embodiment in which is provided. When this annular groove is used, a burr generated when the thin film that engages the chemical solution storage cylinder 2 and the chemical solution delivery rod 3 is separated when the chemical solution injection container is used is formed on the chemical solution storage portion cylindrical body. By fitting into this groove when fitting, the adhesion between the cylindrical body and the rod-shaped body can be ensured.

FIG. 4 shows an example of a sealing means for sealing the chemical solution outlet of the chemical liquid injecting container main body 1.
The structure shown in FIG. 2 has a structure in which the tips of the liquid crystal fittings are fitted to seal the chemical solution outlet.

FIGS. 5A, 5B and 5C are side elevational views (FIG. 5A) of a container for injecting a chemical solution of the present invention and FIG.
FIG. 5A is a sectional view (FIG. 5B) and FIG. 5B is a sectional view taken along the line BB ′ (FIG. 5C).

The container for injecting a drug solution according to the present invention is filled with a predetermined amount of drug solution, and the drug solution delivery port of the drug solution storage cylinder 2 is sealed by the above-mentioned sealing means such as the cap 10 so that the final drug product can be obtained. Become. The usage of this final preparation is as follows.

After removing the sealing means of the chemical solution filling container filled with the chemical solution, the thin film engaging the chemical solution storage cylinder 2 and the chemical solution delivery rod 3 is cut off. The tip of the rod-shaped body 3 is fitted to the cylindrical body 2 for storing the liquid medicine. At this time, due to the action of the small projection a provided on the end outer wall of the chemical liquid delivery rod 3, the chemical liquid delivery rod 3 is maintained in a state of being partially fitted to the chemical liquid storage cylinder 2. be able to. Next, the drug solution sending / outlet side of the drug solution storage cylinder 2 is inserted into the anus, and the large diameter flange 5 of the drug solution storage cylinder 2 is inserted until it stops at the anal entrance, and then the drug solution delivery rod 3 is inserted. By pushing the pressing surface 9 and pushing the drug solution delivery rod 3 into the drug solution storage cylinder 2, the drug solution is injected into the body from the drug solution delivery port 7 of the drug solution storage cylinder 2.

[0019]

The container for injecting a drug solution according to the present invention is capable of easily injecting a predetermined amount of drug solution from the anus into the body independently of another person's hand. In the case of the final pharmaceutical product, the drug solution does not leak due to vibration during transportation etc. before use.
Moreover, there is an advantage that the container body can also be manufactured by integral molding.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an entire container for injecting a chemical solution according to the present invention.

FIG. 2A is a partial longitudinal sectional view of an example of a small groove provided in an inner wall of an end portion of a chemical solution storage cylindrical body on which a medical solution delivery rod is fitted;

FIG. 2B is a sectional view taken along line AA ′ of FIG. 2A.

FIG. 3 is a view for explaining an annular groove and a small protrusion provided on an outer wall at an end of a rod-shaped body for delivering a chemical solution which is fitted to a cylindrical body for containing a chemical solution.

FIG. 4 is a diagram illustrating an example of a state of a sealing unit that seals a chemical solution outlet of a chemical solution storage cylinder.

FIG. 5A is a side external view for explaining the entire chemical solution injection container according to the present invention.

FIG. 5B is a sectional view taken along the line AA ′ of FIG. 5A.

FIG. 5C is a sectional view taken along the line BB ′ of FIG. 5A.

[Explanation of symbols]

 a Small protrusion 1 Chemical liquid container main body 2 Chemical liquid storage cylinder 3 Chemical liquid delivery rod 4 Thin film 5 Large diameter flange 6 Small diameter flange 7 Chemical liquid outlet 8 Chemical liquid storage part 9 Pressing surface 10 Cap 11 Small groove 12 Groove

Continued on the front page (56) References JP-A 3-7832 (JP, U) JP-A 63-156647 (JP, U) JP-A 6-68759 (JP, U) JP-A 60-15342 (JP (U, U) Japanese Utility Model Hei 6-5639 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61M 3/00 A61M 5/28

Claims (9)

(57) [Claims] 1. A medicine container cylindrical body having a medicine outlet at one end, which is sealed by a detachable sealing means, is integrally engaged with the cylinder so as to be separable, and is separated from the separable part after separation. A drug delivery rod which is inserted into the separation opening of the cylindrical body and is slidably fitted therein. 2. The container according to claim 1, wherein the integral engagement is a thin film engagement. 3. The cylindrical body has a large-diameter flange on a central outer wall in a longitudinal direction thereof, and a small-diameter flange on an end outer wall on a side where the rod is fitted. Item 3. The drug injection container according to Item 1 or 2. 4. The container for injecting a drug according to claim 1, wherein the rod-shaped body has an annular groove in an outer wall near an end of the cut-off portion. 5. The container for injecting a medicine according to claim 1, wherein the cylindrical body has a small groove in a length direction on an inner wall of an end portion of the separation portion. 6. The rod-shaped body may have a length within a range extending to an axial length of a small groove provided on an inner wall of an end portion of the cylindrical body separating portion.
The container for injecting a medicine according to claim 5, wherein the container has two or more small projections. 7. The rod-shaped body has an end formed in a shape that is easy to press when delivering a medicine.
The drug injection container according to claim 5. 8. The medicine injection container according to claim 1, wherein the sealing means is a cap. 9. The container for injecting a medicine according to claim 8, which is used for an enema.