JPH061130Y2 - Medical dish with excellent resistance to twisting and deformation after boiling disinfection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement of a medical instrument mounting plate used by a doctor for medical treatment, particularly a medical plate made of a vibration-damping steel plate.

[Prior Art] A medical dish on which medical instruments such as a syringe, a scalpel, tweezers, and forceps are placed when a doctor performs medical treatment has conventionally been formed by drawing a stainless steel or other non-rusting metal plate. A metal medical dish was used.

Since such a metal medical dish has a clean appearance with almost no rust, it gives the clinician and the examinee a sense of hygiene and is well-received. On the other hand, it is used in hospitals such as clinics and operation rooms. When it is used in a room, a metallic sound is generated, which is disadvantageous in that it gives a patient emotional pain and anxiety.

As a medical dish for reducing the metallic noise, which is a drawback of the above-mentioned metal medical dish, Japanese Utility Model Laid-Open No. 61-85207 discloses two metal plates having a total thickness of 0.5 to 1.6 mm. 80-1 between the boards
A metal made of a plate material having a structure in which a viscoelastic substance having a vibration damping performance of 80μ, polypropylene, an ethylene-vinyl acetate copolymer, an ethylene-acrylic acid polymer or a substance made of these metamorphosis is used as a core for intervening thermocompression bonding. A medical dish is disclosed.

Viscoelastic substance used for the vibration damping steel plate of the above metal medical dish, polypropylene, ethylene-vinyl acetate copolymer,
A substance composed of an ethylene-acrylic acid polymer or a modified product thereof is thermoplastic.

[Problems to be Solved by the Invention] A conventional metal medical dish is constructed as described above,
Although the metallic noise, which is the above-mentioned drawback, has been reduced, no consideration has been given to boiling disinfection. When the metal medical dish is sterilized by boiling, there is a problem that the dish is twisted by heat, and there is a problem that the sterilization cannot be performed by boiling.

This invention was made to solve the above problems.

That is, an object of the present invention is to provide a medical dish having excellent resistance to twist deformation after boiling disinfection.

[Means for Solving the Problems] In the present invention, factors causing the medical dish to be twisted are considered to be the finish of the mold, the characteristics of the metal plate, the characteristics of the resin, and the cooling after boiling sterilization. It was made based on the finding that the deformation after boiling sterilization can be substantially prevented only by specifying the thickness of a specific resin type as a result of the examination.

The present invention is characterized by being formed of a vibration-damping steel plate having a thickness of 20 to 80 μ between thermosetting resin-coated steel plates or a stainless steel plate that has been subjected to anticorrosion treatment, and has excellent torsional deformation resistance after boiling disinfection. It is a medical dish.

[Operation] Since the thickness of the resin as the core of the vibration-damping steel plate is as thin as 20 to 80 μ, the medical dish of the present invention has a small elastic strain of the resin and the steel plate and is deformed even when it is boiled, as shown in Examples described later. Stays in a small range.

If the thickness of the resin as the core of the medical dish of the present invention exceeds 80 μ, the torsional deformation after boiling becomes large, and if it is less than 20 μ, the vibration damping effect is obtained, as shown in FIG. Is not sufficient and the adhesion is poor, so as described above
The thickness of the resin was specified as 20-80 μ.

Regarding the resin, a thermosetting resin is preferable because it does not melt even at the boiling temperature and the degree of softening is small.

As the steel plate, a steel plate or a stainless steel plate that has been rust-proofed by chromate or plating is used.

When the total thickness of the vibration damping steel plate is less than 0.4 mm, when a medical instrument such as a syringe, a scalpel, tweezers, and forceps is placed on a medical dish and is carried, it easily deforms, and when placed on a table,
It may lack stability.

Further, if the thickness exceeds 1.6 mm, the weight of the medical dish itself becomes heavy and it becomes unpractical, so that the total thickness of the damping steel plate is preferably 0.4 to 1.6 mm.

Next, an embodiment of the present invention will be described.

[Embodiment] FIG. 1 is a plan view of a medical dish according to an embodiment of the present invention, FIG. 2 is a side view of the same medical dish, and FIG. 3 is a sectional view taken along line AA in FIG. FIG. 4 is a partially enlarged sectional view of FIG. 3, and FIG. 5 is a graph showing the relationship between the resin thickness and the maximum twist deformation amount in this embodiment.

In the figure, 1 is the bottom surface (stainless steel plate) of the medical dish,
Reference numeral 2 is a side surface of the medical dish, 3 is an edge of the medical dish, and 4 is a core made of an acrylic thermosetting resin.

As the steel plate of the damping steel plate of this embodiment, a stainless steel plate having a thickness of 0.3 mm was used.

First, a 200 mm × 100 mm × 5 mm size medical dish as shown in FIGS. 1 to 4 is sandwiched with two 0.3 mm thick stainless steel plates and 50 μm thick acrylic thermosetting resin. It was made from the damping steel plate of the composition.

The medical dish prepared in this manner was sterilized by boiling and left to cool in the air.

The relationship between the maximum twist deformation amount after boiling disinfection and the thickness of the resin is shown by the dotted line in FIG.

As a result, almost no deformation was observed as shown in FIG.

Next, thermoplastic polyethylene was used as the core resin between the stainless steel plates similar to the above, and the resin thickness was changed to 200 mm ×
A medical dish having a size of 100 mm × 5 mm as shown in FIGS. 1 to 4 was prepared, and the relationship between the maximum twist deformation amount after boiling sterilization of the medical dish and the resin thickness was examined. The maximum amount of twist deformation in that case was expressed by the increment of the maximum height before and after boiling after placing the dish on the surface plate. The result is shown in FIG.

As is clear from FIG. 5, the thickness of the thermoplastic resin is 80μ.
If it exceeds, the amount of twisting deformation of the medical dish after boiling sterilization is reduced, but the amount of deformation is remarkably large as compared with the examples of the acrylic thermosetting resin.

In this embodiment, a stainless steel plate was used as the vibration damping steel plate, but a similar result can be obtained with a steel plate that has been rust-proofed by another chromate or plating.

Further, in the present embodiment, the acrylic thermosetting resin is used as the resin, but any resin may be used as long as it is a thermosetting resin.

[Effect of the Invention] The medical plate made of the vibration-damping steel plate of the present invention can be boiled and sterilized similarly to the conventional metal medical plate, and has a vibration-damping effect.

[Brief description of drawings]

FIG. 1 is a plan view of a medical dish which is an embodiment of the present invention, FIG. 2 is a side view of the same medical dish, FIG. 3 is a sectional view taken along line AA in FIG. 1, and FIG. FIG. 3 is a partially enlarged cross-sectional view of FIG. 3, and FIG. 5 is a graph showing the relationship between the resin thickness and the maximum twist deformation amount in this embodiment. In the figure, 1 is the bottom surface (stainless steel plate) of the medical dish,
Reference numeral 2 is a side surface of the medical dish, 3 is an edge of the medical dish, and 4 is a core made of an acrylic thermosetting resin.

Claims (1)

[Scope of utility model registration request] 1. A twist-deformation resistance after boiling sterilization comprising a vibration-damping steel plate having a thickness of 20-80 .mu.m sandwiched between anti-corrosion-treated steel plates or stainless steel plates. Excellent medical dish.