JPH0434469Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a holder for holding a dosimeter when measuring dose with the dosimeter.

(b) Prior art In the conventional dosimeter holder, a hole corresponding to the size of the dosimeter was drilled in an acrylic or polyester resin plate with an X-ray transmittance of 1.2, and the dosimeter was inserted into this hole. In this case, there were two types: one in which a hole was made in one holding plate, and one in which two plates were joined and holes were made along the joint surface.

In the former configuration, the holes are drilled in a single resin plate, which requires high accuracy in the size and shape of the holes, and there is a high risk of damaging the dosimeter when inserting it. Since two plates are used, the dimensional accuracy of the hole is reduced, and air accumulates on the joining surface of the plates, causing problems with X-ray transparency.Furthermore, since the two plates are screwed together, The drawback is that it takes time to insert and remove the dosimeter.

(c) Purpose In view of the above-mentioned drawbacks, the present invention provides a dosimeter holder that has a dosimeter insertion hole with high accuracy and allows the dosimeter to be inserted and removed easily and without the risk of damage. With the goal.

(d) Structure In order to achieve the above object, the dosimeter holder of the present invention has a dosimeter holder made of soft synthetic resin, which has a shape that matches the outer shape of the dosimeter to be held on the opposing surfaces of each of the two flexible plates. forming a recess with a substantially matching inner surface shape;
The dosimeter is fitted into the recess, the two plates are releasably joined oppositely to each other to sandwich the dosimeter, and the bonded state of the two plates is determined only by the adhesion of the opposing surfaces. It is constructed so that it can be maintained.

Urethane resin is suitable as the soft synthetic resin, and the upper and lower plates are molded by curing liquid urethane resin using molds having substantially the same external shape as the dosimeter to be held.

(e) Examples The illustrated embodiment will be described in detail below.

1 is a cylindrical dosimeter; 2 is a dosimeter holder; each holder 2 consists of a rectangular upper plate 3 and a lower plate 4; one surface 3a of the upper plate 3 and the corresponding surface 4a of the lower plate 4; Semi-cylindrical grooves or recesses 3b, 4b are formed in the joining surfaces 3a, 4a from one side of each plate 3, 4 toward the center of the plate. The grooves 3b and 4b form a cylindrical hole 5 when the upper plate 3 and the upper plate 4 are joined, and the shape and inner diameter of this hole 5 are substantially the same as the shape and outer diameter of the dosimeter 1 to be inserted. equally,
Further, the depth (length in the axial direction) of the hole 5 is formed to be approximately equal to the length in the axial direction of the dosimeter 1 . That is, when the dosimeter 1 is inserted into the hole 5, the dosimeter 1
The outer surface of the hole 5 and the inner surface of the hole 5 are tightly bonded so that there is substantially no gap between the bonded surfaces.

For this purpose, the materials for the upper plate 3 and lower plate 4 are as follows:
A soft urethane resin can be suitably used. In other words, although soft urethane resin is a viscous liquid, it can be molded into the desired shape by adding a hardening agent. By pouring urethane resin and curing it, and then removing the mold and molding the upper and lower plates, we can create upper and lower plates in which, when both plates are joined together, a hole is formed with an inner shape that substantially matches the outer shape of the dosimeter. Obtainable.

When in use, fit half of the dosimeter 1 into the groove 4b of one plate 4, and insert the other half of the dosimeter into the groove 4b of the other plate 3.
The two plates are joined by fitting into the groove 3b of the plate.

In order to take out the dosimeter, since the soft urethane resin is flexible, one plate can be peeled off from the other plate as shown by the chain line in FIG.

Although the illustrated embodiments have been described in detail above, the present invention is not limited thereto and various modifications are possible.

The shape of the upper and lower plates 3, 4 is not limited to the square shown, but may be of other shapes. Its dimensions can also be freely selected.
The shape of the grooves or recesses 3b, 4b is also selected according to the outer shape of the dosimeter and is not limited to the shape shown.

(f) Effect According to the present invention, the urethane resin that is the material of the upper and lower plates 3 and 4 has an X-ray transmittance of 1.03, which is close to that of the human body, so measurements using a dosimeter can be performed under conditions similar to those of the human body. can.

Since soft urethane resin can be molded by curing the viscous liquid with a hardening agent, it is possible to form holes that precisely match the external shape of the dosimeters to be held in the upper and lower plates, which prevents stagnation due to gaps. X by air
It is possible to prevent errors such as loss of linear transmittance.

Since the soft urethane resin has high adhesion on the surfaces of the upper and lower plates, it is possible to maintain the bonded state by simply bonding both plates 3 and 4 without the need for screws or other fixing means. Since the plates are flexible, they can be easily separated by peeling one plate from the other, and therefore the dosimeter can be attached and detached quickly and easily without fear of damage.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the same. 1... Dosimeter, 2... Holder, 3... Top plate, 4
...Lower plate, 3a, 4a...Joint surface, 3b, 4b...
…groove.

Claims (1)

[Claims for Utility Model Registration] (1) Two flexible plates made of soft synthetic resin, each having a recess on its opposing surface with an inner surface that substantially matches the outer shape of the dosimeter to be held. form,
The dosimeter is fitted into the recess, the two plates are releasably joined oppositely to each other, the dosimeter is sandwiched, and the bonded state of the two plates is determined only by the adhesion of the opposing surfaces. A dosimeter holder characterized in that it is configured to be maintained by twisting the dosimeter. (2) The soft synthetic resin is a soft urethane resin, and each of the two plates is molded by curing liquid urethane resin using a mold having an outer shape substantially the same as the outer shape of the dosimeter. A dosimeter holder according to claim 1, which is a utility model.