JPH08728A - Radioactive substance injection device with a mechanism to prevent the syringe type vial from spinning - Google Patents

Abstract

(57) [Abstract] [Purpose] The radioactive substance injection device and the syringe type vial are held securely, the syringe type vial in the injection device is prevented from spinning, and the syringe type vial and the radioactive substance are used after use. To provide a radioactive substance injection device capable of easily separating the injection device. A radioactive substance injection device characterized in that an elastic body is fixed to a portion of the wing-shaped holding member and / or the cap that comes into contact with the flange of the syringe-type vial, or an open end of the cap.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a defect in a radioactive substance injection device for a syringe type vial containing a radioactive drug solution. More specifically, it relates to prevention of idling of a syringe-type vial in a radioactive substance injection device.

[0002]

2. Description of the Related Art A syringe-type vial filled with a drug solution is convenient (no transfer is required), radiation exposure is reduced, and radioactive waste is reduced when a radioactive diagnostic agent for internal administration containing a radioactive isotope is used. From the point of view, its increased use is recognized. The syringe-type vial is used by being attached to a radioactive substance injection device as shown in FIGS. 9 and 10 for the purpose of further reducing the exposure of the operator.

In this radioactive substance injection device, a notch portion extending in the lengthwise direction is provided in the peripheral portion of a radiation shielding metal cylindrical body (11) such as tungsten or lead whose one end is closed, and lead glass or the like is provided in the notch portion. The radiation shielding transparent plate (12) is attached and a through hole is provided at the closed end of the tubular body, while the wing-shaped holding member (13) is fixed at the open end of the tubular body and the syringe plunger insertion hole is provided. A cap (15) having (14) is removably attached, and a syringe-type vial (16) in which a radioactive drug solution is sealed is inserted into the cylindrical body so that the tip of the syringe-type vial is projected from the through hole of the closed end. At the same time, a cap (15) is attached to the open end of the cylindrical body, and the flange (17) of the syringe-type vial is sandwiched and fixed between the closed end and the cap. After inserting and screwing the plunger (19) from the plunger insertion hole (14) into the gasket (18) in the syringe-type vial fixed in this way, attach the needle (20) to the tip of the syringe-type vial. Ready to use. At this time, depending on the surgeon, the direction of the needle may be changed,
If the radioactive substance injection device and the syringe-type vial were held loosely, there were cases where the vial spun in the radioactive substance injection device and could not be changed even if the direction was changed.

[0004] It is important for the reduction of radiation exposure that the syringe type vial that is discarded after use and the radioactive substance injection device to be reused can be easily separated.

[0005]

As described above, the object of the present invention is to securely hold the radioactive substance injection device and the syringe type vial, prevent the syringe type vial in the injection device from spinning, and Another object of the present invention is to provide a radioactive substance injection device in which a syringe type vial and a radioactive substance injection device can be easily separated after use.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the inventors have fixed an elastic body to a wing-shaped holding member and / or a cap, which is a constituent of a radioactive substance injection device, by It was possible to obtain a radioactive substance injection device in which the syringe type vial in the injection device was completely held, no idling occurred, and after use, the syringe type vial and the radioactive substance injection device could be easily separated.

That is, according to the present invention, a radiation shielding metal plate having a closed end is provided with a notch extending in the lengthwise direction at the periphery thereof, and a radiation shielding transparent plate is attached to the notch. While a through hole is provided at the closed end of the syringe, a wing-shaped holding member is fixed at the open end of the cylinder, and a cap having a syringe insertion hole for a syringe is detachably attached, and a syringe in which a radioactive drug solution is sealed in the cylinder. Type vial is inserted to project the tip of the syringe type vial from the through hole of the closed end, and a cap is attached to the open end of the tubular body to clamp and fix the syringe type vial between the closed end and the cap. In the radioactive substance injection device, an elastic body is fixed to a portion of the wing-shaped holding member and / or the cap that comes into contact with the flange of the syringe-type vial. The radioactive substance injection device, the wing-shaped holding member or the cap, wherein an elastic body is fixed to one of the portions of the cap that come into contact with the flange of the syringe-type vial, and the other surface is roughened, and the radioactive substance injection device, wing-shaped The radioactive substance injection device in which an elastic body is fixed to a portion of the holding member and the cap that comes into contact with the flange of the syringe-type vial, and a notch portion extending in the lengthwise direction is provided in the circumferential portion of the radiation shielding metal cylinder body whose one end is closed. A radiation shielding transparent plate is attached to the notch, and a through hole is provided at the closed end of the cylinder, while the wing-shaped holding member is fixed to the open end of the cylinder and a plunger insertion hole for the syringe is provided. A cap is detachably attached, and a syringe-type vial containing a radioactive drug solution is inserted into the cylinder so that the tip of the syringe-type vial is projected from the through hole of the closed end. In a radioactive substance injection device in which a cap is attached to the open end of the tubular body and the syringe-type vial is clamped and fixed between the closed end and the cap, an elastic body is fixed to the open end of the cap. A radioactive substance injection device characterized in that the wing-shaped holding member and / or the cap are made of plastic, and the elastic body is an elastomer, and the plastic and the elastomer are integrally molded. It is a radioactive substance injection device that has been used.

Specifically, the elastic body is fixed to both the wing-shaped holding member and the portion of the cap that comes into contact with the flange of the syringe-type vial. The elastic body is fixed to either the wing-shaped holding member or the portion of the cap that comes into contact with the flange of the syringe-type vial. An elastic body is fixed to either the wing-shaped holding member or the portion of the cap that comes into contact with the flange of the syringe-type vial, and the other surface is roughened. Secure the elastic body to the open end of the cap. The radioactive substance injection device having any one of the above-mentioned structure securely clamps and fixes the syringe-type vial in the injection device to prevent the syringe-type vial from idling, and further, after using the syringe-type vial and the radioactivity The substance injection device can be easily separated.

The wing-shaped holding member and / or the cap may be made of metal, plastic or the like, and the elastic body may be made of metal spring or the like, but elastomer is preferably used. The elastic body may be fixed to the wing-shaped holding member and / or the cap using an adhesive, but it is preferable to integrally mold and fix the plastic and the elastomer. The material of the elastomer is not particularly limited, but generally ethylene-propylene, polyurethane,
Elastomers such as polyamide, polycarbonate, styrene-butadiene series are suitable. The material of the wing-shaped holding member and the cap may be the resin used for general plastic products, but ABS, polypropylene, polyethylene, polycarbonate-based resins or the like are preferable. The process of fixing the elastomer to the wing-shaped holding member or the cap may be a commonly used resin adhesive, but it is preferably performed by a two-color molding method in view of durability against peeling. At that time, when the material of the wing-shaped holding member or the cap is ABS resin, the elastomer is preferably polyester elastomer, and when the material is polypropylene resin, polystyrene elastomer is preferable. In the case of integrally molding the wing-shaped holding member and the cap with the elastomer, the wing-shaped holding member and the cap are made of a material on the primary side by using a two-color molding machine, and subsequently, the material of the elastomer is made on the secondary side.

By simply fixing the elastomer to either the wing-shaped holding member or the portion of the cap that comes into contact with the flange of the syringe-type vial, the elastic force of the elastomer causes the syringe-type vial to function as the wing-shaped holding member when the cap is screwed on. It is securely sandwiched and fixed between the caps, but in order to further strengthen the cap, the other surface may be subjected to embossed surface roughening, or both may be provided with an elastomer.

Further, by fixing the elastomer to the open end of the cap, when the elastomer is screwed to the position where the elastomer comes into contact with the wing-shaped holding member, the cap is completely screwed and the syringe-type vial is held in the wing-shaped holding. The cap can be prevented from being loosened by the elastic force of the elastomer while being securely sandwiched and fixed between the member and the cap.

[0012]

EXAMPLES Examples will be described below. -Example 1-FIG. 1 is a wing-shaped holding member with an elastomer manufactured by a two-color molding machine, in which the wing-shaped holding member (1) is made of ABS resin and the elastomer (2) is made of polyester elastomer. Using the radioactive substance injection device equipped with this wing-shaped holding member with elastomer and the ordinary cap (15) shown in Fig. 2 (cap without embossed rough surface treatment), check for idle rotation as follows. Experiments were conducted. First, as shown in FIG. 3, the syringe-type vial (16) was housed in the radioactive substance injection device equipped with the elastomeric wing-shaped holding members (1, 2), and the cap (15) was turned by hand to be attached. Next, after attaching the needle straight to the tip of the vial, the needle was rotated to change the position of the needle tip, and the idle state of the syringe-type vial at that time was examined. As a result, no idle rotation of the syringe-type vial was observed (n = 10). As a comparative experiment, the same experiment was carried out with a radioactive substance injection device provided with a wing-shaped holding member without an elastomer, and as a result, idling of syringe-type vials was observed in 3 out of 10 specimens. Regarding the ease of removing the cap, it was possible to easily remove it with or without an elastomer (each n
= 10).

Although an ordinary cap (15) was used in the above experiment, as shown in FIG. 4, the bottom surface of the cap (7) (the portion in contact with the flange of the syringe-type vial) was embossed and roughened. Even those which have been subjected to (8) are preferably used.

Example 2 FIG. 5 shows an elastomer cap (A type) manufactured by a two-color molding machine and having an elastomer at the open end of the cap. The cap body (3) is made of ABS resin. The elastomer (4) is made of polyester elastomer. Using the radioactive substance injection device equipped with this elastomer cap, the syringe type vial (16) is housed in the radioactive substance injection device equipped with a normal wing-shaped holding member (13) as shown in FIG. As a result of carrying out the same experiment as in the case of the above-mentioned wing-shaped holding member with an elastomer, the syringe type vial was not idle at all (n = 10). As a comparative experiment, the same experiment was performed using a radioactive substance injection device equipped with a cap without an elastomer, and as a result, idle rotation of syringe-type vials was observed in 5 out of 10 samples. Regarding the ease of removing the cap, it was possible to easily remove it with or without an elastomer (each n = 10).

Another embodiment is shown below. In FIG. 7, an elastomer (6) is applied to the bottom surface of the cap (5) (the portion that contacts the flange of the syringe-type vial). This cap (B type) may be used in a usual radioactive substance injection device, or may be used in a radioactive substance injection device in which the open end of the wing-shaped holding member is roughened. Alternatively, as shown in FIG. 8, it may be used in a radioactive substance injection device including an elastomeric wing-shaped holding member (1, 2).

According to the present invention, an elastic body is fixed to the end of the wing-shaped holding member and / or the cap, which is a component of the radioactive substance injection device, so that the syringe-type vial in the injection device is completely held. , No idle rotation,
Moreover, after use, the syringe-type vial and the radioactive substance injection device can be easily separated.

[Brief description of drawings]

FIG. 1 is a perspective view (a) and a side view (b) of a wing-shaped holding member with an elastomer.

FIG. 2 is a view showing an inner surface of a normal cap.

FIG. 3 is a cross-sectional view (partial view) when a syringe-type vial is housed in a radioactive substance injection device equipped with an elastomeric wing-shaped holding member and a normal cap is attached.

FIG. 4 is a view showing an inner surface of a cap having an embossed roughened surface on a bottom surface (a portion in contact with a collar of a syringe-type vial).

FIG. 5 is a perspective view (a) when viewed from the bottom of a cap (A type) with an elastomer in which an elastomer is applied to the open end of the cap, and a perspective view (b) when viewed from the side.

FIG. 6 is a cross-sectional view (partial view) when a syringe-type vial is housed in a radioactive substance injection device equipped with an ordinary wing-shaped holding member and an elastomer-equipped cap (A-type) is attached.

[Fig. 7] Cap with elastomer (B that is in contact with the flange of the syringe-type vial) with elastomer on the bottom surface (B
The figure showing the inner surface of the mold.

FIG. 8 is a cross-sectional view (partial view) when a syringe-type vial is stored in a radioactive substance injection device equipped with an elastomer-equipped wing-shaped holding member and an elastomer-equipped cap (B-type) is attached.

FIG. 9 is a perspective view of a normal radioactive substance injection device in which a syringe-type vial is housed, a cap is attached, a plunger and a needle are set, and a radioactive drug solution can be administered.

FIG. 10 is a cross-sectional view when a syringe type vial is housed in an ordinary radioactive substance injection device and a cap is attached.

[Explanation of symbols]

 1 Wing-shaped holding member 2 Elastomer 3 Cap body 4 Elastomer 5 Cap body 6 Elastomer 7 Cap 8 Embossed rough surface processing 11 Radiation shield metal cylinder 12 Radiation shield transparent plate 13 Wing-shaped holding member 14 Plunger insertion hole for syringe 15 Cap ( 16) Syringe type vial 17 Tsuba 18 Gasket 19 Plunger 20 Needle

Claims (5)

[Claims] 1. A radiation shielding metal plate having a closed end, which is provided with a notch extending in the lengthwise direction at the periphery thereof, and a radiation shielding transparent plate is attached to the notch, and the closed end of the tubular body is provided. While a through hole is provided in the tube, a wing-shaped holding member is fixed to the open end of the cylinder, and a cap having a syringe plunger insertion hole is detachably attached, and a syringe-type vial containing a radioactive drug solution is inserted into the cylinder. Then, the tip of the syringe-type vial is projected from the through hole of the closed end, and a cap is attached to the open end of the tubular body to clamp and fix the syringe-type vial between the closed end and the cap. In the injection device, a radioactive substance injection device characterized in that an elastic body is fixed to a portion of the wing-shaped holding member and / or the cap that comes into contact with the flange of the syringe-type vial. 2. The radioactive substance injection according to claim 1, wherein an elastic body is fixed to one of the portions of the wing-shaped holding member or the cap that come into contact with the flange of the syringe-type vial, and the other surface is roughened. apparatus. 3. The radioactive substance injection device according to claim 1, wherein an elastic body is fixed to portions of the wing-shaped holding member and the cap that come into contact with the flange of the syringe-type vial. 4. A radiation shield metal plate having a closed end, provided with a notch extending in the lengthwise direction on a peripheral portion thereof, and a radiation shield transparent plate being attached to the notch, and a closed end of the cylinder. While a through hole is provided in the tube, a wing-shaped holding member is fixed to the open end of the cylinder, and a cap having a syringe plunger insertion hole is detachably attached, and a syringe-type vial containing a radioactive drug solution is inserted into the cylinder. Then, the tip of the syringe-type vial is projected from the through hole of the closed end, and a cap is attached to the open end of the tubular body to clamp and fix the syringe-type vial between the closed end and the cap. The injection device, wherein an elastic body is fixed to the open end of the cap, the radioactive substance injection device. 5. The radioactive substance according to claim 1, 2, 3 or 4, wherein the wing-shaped holding member and / or the cap is made of plastic, and the elastic body is an elastomer, and the plastic and the elastomer are integrally molded. Injection device.