JP4349583B2 - Hazardous gas exposure prevention device for anatomy laboratory - Google Patents

Description

  The present invention relates to an apparatus for preventing harmful gas exposure for an anatomical training room, and in particular, exposure of harmful gases (formaldehyde gas, etc.) mainly generated from a preservative such as formalin when performing anatomical training of a body subjected to antiseptic treatment with formalin or the like. It is related with the apparatus which prevents.

  Anatomical training performed by medical students is referred to as medical system anatomical training, and generally, a plurality of bodies subjected to antiseptic treatment with formalin or the like are simultaneously performed on a plurality of dissecting tables. Since this training is conducted for a long time by many people, it is necessary to efficiently and economically remove harmful gases such as formaldehyde gas generated from formalin.

  In general, this has been dealt with by opening ventilators, windows, using air cleaners, etc., but these do not provide sufficient exposure prevention effects. Some of the new training rooms are equipped with centrally controlled air conditioning equipment with intake and exhaust ports, but the equipment and maintenance costs are expensive, making it difficult to disseminate in general. Accordingly, various local exhaust means for each dissection table have been proposed (Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4). However, these have problems such as a structure that hinders practical work, it is difficult to apply to existing dissection tables, and the effect of preventing exposure of harmful gases to the trainee is insufficient.

JP 2004-045151 A JP 2003-320220 A JP 2003-116859 A JP 2001-061909 A

  The purpose of the present invention is to obtain a sufficient exposure prevention effect of harmful gas without impairing the workability of the practitioner and to use the existing dissection table as it is without requiring construction such as installation of an exhaust duct. An object of the present invention is to provide an apparatus for preventing harmful gas exposure for an anatomy laboratory.

The present invention provides a push mechanism having a mechanism for blowing uniform air from a blowing opening having a height from the vicinity of the upper surface of the dissecting table to a position higher than the specimen on the dissecting table on each of the dissecting tables in the dissection training room. At least a part of the uniform airflow is on the anatomy table with a hood and a pull hood that has a mechanism for suctioning and evacuating from the suction opening having a height from the vicinity of the upper surface of the dissection table to a position higher than the specimen on the dissection table. It is a device for preventing harmful gas exposure for an anatomical training room, which is arranged in the vicinity of the longitudinal end of the dissecting table so as to be sucked into the pull hood after flowing in contact with the specimen. .

  By using the apparatus of the present invention, exposure of harmful gases such as formaldehyde gas can be remarkably prevented with a very small air flow without impairing the workability of the trainee. Moreover, it can be easily installed and moved using the existing training room and the dissection table as they are without requiring construction such as installation of an exhaust duct.

The present invention will be described below with reference to the drawings. As shown in FIG. 1, a push hood 1 that is an air blowing hood is provided on the foot side of the dissection table, and a pull hood 2 that is an air suction hood is provided on the head side. This may be reversed. The height of the hood is preferably as low as possible so as not to hinder the practical work, but is also preferably higher than the sample because of the height of the sample. Alternatively, the push hood may be lifted slightly upward to blow the airflow obliquely downward.

In this way, a uniform air flow is caused to flow from the push hood in the direction shown in the figure as a horizontal flow or a diagonal down flow. Here, the uniform air flow means a state where the magnitude of the flow velocity is substantially constant throughout the cross section when viewed in a cross section perpendicular to the flow. According to “Factory Ventilation” published by the Society of Air Conditioning and Sanitation Engineering, published in 1982, it is suggested that the variation in velocity distribution should be within ± 20% of the average value.

  The pull hood has an exhaust fan like the normal pull hood and enables indoor ventilation. However, the pull hood used in the present invention preferably has a built-in filter for adsorbing harmful gases such as formaldehyde gas emitted from the specimen. . As long as the filter can remove harmful gas typified by formaldehyde gas, a conventionally known appropriate filter can be used. Moreover, although the necessity is small compared with a pull hood, it may be preferable to incorporate a filter for adsorbing a harmful gas such as formaldehyde gas in a push hood. Also, a dust filter is installed to prevent clogging of perforated plates such as punching metal for creating dust and entanglement in the fan inside the device, and dust entangled in the air intake port of the push hood. It is preferable to arrange them. It is preferable to arrange a coarse dust filter in the pull hood.

  As shown in FIG. 2, the pull hood used by the present invention has an opening 3, a filter 4, an exhaust fan 5, and a caster 6 attached to the case, so that the structure is easy to move. Yes. If the harmful gas filter is not built in the pull hood, it must be exhausted to the outside by a duct.

Since the heights of all the dissection tables are not necessarily constant or the specimen may be large, it is preferable that the push hood and the pull hood have an up-and-down mechanism. For example, if the opening surface has a double structure as shown in FIG. 3 and the opening surface on the back side is made larger than the opening surface on the near side, the operating range can be set by the difference in size. In this case, it is desirable to provide a perforated body such as punching metal on the opening surface. In this method, the push hood and the pull hood do not need to be moved up and down, so the height can be adjusted very easily, and the height of the main body does not change, so that the hindrance to the field of view can be minimized.
On the other hand, there is a case where it is desired to install the push hood obliquely upward as in the case of slanting downflow. In that case, it is possible to give the main body legs a vertical mechanism, or to add a stand with a separate vertical mechanism to the main body. Such an up-and-down mechanism can also be used for a pull hood. By doing so, a more appropriate airflow can be created and ventilation can be performed effectively.

FIG. 4 is a comparative explanatory view using only a pull hood. The pull hood alone cannot sufficiently suck the gas generated far away from the hood, and there is a high possibility that the practitioner will be exposed to harmful gases such as formaldehyde gas. The gas generated at a distance from the air can be transported to the pull hood without diffusing and can be efficiently ventilated. In fact, if an attempt is made to produce a suction effect only with the pull hood shown in FIG. 4, the hood becomes an external hood of the local exhaust device, and its air volume is about 500 m ³ / min, which is not realistic at all. On the other hand, when a push hood having a uniform air flow blowing mechanism is combined (FIG. 5), the total air volume is about 19 m ³ / min.

  Further, the pull hood has a built-in filter for treating gas, and the treated air can be circulated into the room, so that the air conditioning efficiency is remarkably increased.

  Thus, in the first aspect of the present invention, the push hood and the pull hood are not arranged outside the specimen on the head side and the foot side of the dissection table. There is no hindrance to the work.

Explanatory drawing which shows an example of installation of this invention apparatus. Explanatory drawing of the pull hood used by this invention. Explanatory drawing of the opening part of the pull hood shown in FIG. The comparison explanatory view at the time of installing only pull food. FIG. 5 is an explanatory diagram of the device of the present invention in comparison with FIG. 4.

Explanation of symbols

1 Push Hood 2 Pull Hood 3 Opening 4 Filter 5 Ventilation Fan (Built-in)
6 Casters

Claims (3)

A push hood and a dissecting table each having a mechanism for blowing uniform air from a blowing opening having a height from the vicinity of the upper surface of the dissecting table to a position higher than the specimen on the dissecting table on each of the dissecting tables in the dissection training room At least a part of the uniform air flow is in contact with the specimen on the dissecting table, with a pull hood that has a mechanism for suctioning and exhausting from the suction opening having a height from the vicinity of the upper surface to the position higher than the specimen on the dissecting table. An apparatus for preventing harmful gas exposure for an anatomical training room, which is arranged in the vicinity of the longitudinal end of the dissecting table independently of the dissecting table so as to be sucked into the pull hood.   The apparatus according to claim 1, wherein a filter having a harmful gas adsorption capability is built in the pull hood.   The apparatus according to claim 2, wherein a filter having a harmful gas adsorption capability is also incorporated in the push hood.

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