JP4952951B2 - Perfusion fixation table - Google Patents

Description

  The present invention relates to a perfusion fixation table for performing perfusion fixation for biological / medical animal experiments and corpse treatment using a perfusion fixation solution such as formaldehyde and glutaraldehyde.

  At present, perfusion fixation using formaldehyde (FA), glutaraldehyde (GA), etc. is widely used for biological / medical animal experiment research, practical training, and corpse treatment. Measures to eliminate sexuality are a problem. However, an effective removal apparatus that does not impair work operability and simplicity has not been developed. In particular, since fiscal 2008, FA has become a target of the Class 2 substances specified by the Ministry of Health, Labor and Welfare, which specializes in the handling of hazardous chemical substances.

Patent documents 1-3 are mentioned as a prior art.
Patent Document 1 describes a dissection table for performing pathological anatomy of a deceased patient and organ removal for organ transplantation. Moreover, it describes that it ventilates from the peripheral part on a dissecting table while it ventilates from a ceiling. However, there is no description or suggestion of performing perfusion fixation of corpses using formaldehyde, glutaraldehyde or the like. Further, there is no description or suggestion about a point for fixing the air supply unit (air supply duct) to the dissecting table body or cooling means.
Patent Document 2 describes a dissection table that reduces biohazard when performing pathology, forensic dissection, and the like. It also describes that air is blown from the ceiling and exhausted from the periphery on the dissecting table. However, there is no description or suggestion of performing perfusion fixation of corpses using formaldehyde, glutaraldehyde or the like. Further, there is no description or suggestion about a point for fixing the air supply unit (air supply duct) to the dissecting table body or cooling means.
Patent Document 3 describes a dissection table that sucks contaminated air containing formaldehyde or the like from an air inlet provided in an edge frame. However, there is no description or suggestion of perfusion fixation of an autopsy specimen on a dissecting table. Further, there is no description or suggestion about a point for fixing the air supply unit (air supply duct) to the dissecting table body or cooling means.
JP-A-10-272138 JP 2001-61909 A JP 2007-244762 A

  When perfused specimens (organisms) are perfusion-fixed, a large amount of perfusion fixative such as formaldehyde is used, so it is necessary to pay more attention to formaldehyde in the working environment compared to dissecting perfusion-fixed specimens. There is. On the other hand, if an air supply mechanism is provided on the ceiling, the construction of the room itself is required, and the apparatus becomes large.

  An object of the present invention is to solve the above-described problems and to provide a perfusion fixing table that can efficiently remove formaldehyde and the like in a work environment with a simple configuration.

In order to achieve the above object, the present invention has the following configuration.
A perfusion fixing table for perfusing and fixing an organism using a perfusion fixing solution,
A pedestal body on which the organism to be perfusion-fixed is placed;
On the upper surface of the pedestal main body, the perfusion fixation working unit capable of placing the organism and discharging the perfusion fixation liquid to the lower part,
A drainage port provided at a lower portion of the perfusion fixation working unit, for discharging the perfusion fixation solution;
An exhaust port provided around the perfusion fixation working unit;
An air supply unit provided above the perfusion fixing working unit;
Cooling means comprising a heat exchanger provided on the pedestal main body and having a low-temperature side provided around the perfusion fixing work part in order to cool the perfusion fixing work part,
Have
The air supply unit includes an air supply fan, and an air supply duct that sends air from the air supply fan to the periphery of the perfusion fixing working unit,
The air supply duct is a combination of two or more types of flexible ducts having different mechanical characteristics, and the diameter of the lower flexible duct is smaller than the diameter of the upper flexible duct, and the air supply direction can be varied.
A perfusion fixation table.

  According to the configuration of the present invention, even when a large amount of perfusion fixing solution such as formaldehyde is used for perfusing an autopsy specimen (organism), the perfusion fixing solution vaporized in the perfusion fixing working unit can be efficiently exhausted. Therefore, it hardly diffuses into the working chamber. In particular, by using an air supply unit having a flexible duct, it is possible to efficiently introduce air around the perfusion fixing work unit without impairing workability, and together with the exhaust ports around the perfusion fixing work unit, The air flow around the perfusion fixing work part can be confined. Since the flexible duct is used, it is possible to introduce air up to just above the perfusion fixing work part without impairing workability. Therefore, a large supply duct is unnecessary, and a small fan is sufficient as the supply fan.

  The perfusion fixing solution may be anything as long as it can perfuse and fix an autopsy specimen (organism), but generally formaldehyde, glutaraldehyde or the like is used. The flexible duct may be anything as long as it has a variable direction and length, but preferably has a bellows structure. The air supply unit may be installed in any form as long as air can be introduced to the top of the perfusion fixing work unit, may be configured to introduce indoor air, or may be configured to be piped from the ceiling. The pedestal main body having the drainage port and the exhaust port may be an integral moving type by attaching casters or the like, or an existing sink may be provided with an exhaust port, an exhaust fan, a waste liquid tank, or the like.

Moreover, there may exist the following as a preferable embodiment.
An illumination device or an imaging device is provided inside the air supply side of the air supply duct.

  Since the air supply duct is a flexible duct, it is possible to illuminate or image a desired location of the perfusion fixing working unit by providing an illumination device or an imaging device at the tip of the air supply duct. Even if the tip of the flexible duct becomes heavy, the illumination device or the imaging device can be stopped at a desired location by providing a balancer or the like inside the flexible duct. Any illumination device may be used as long as it can illuminate, but LED illumination is preferably used.

Moreover, there may exist the following as a preferable embodiment.
The pedestal body is provided with a cooling means for cooling the perfusion fixing working part.

Since the perfusion fixing solution such as formaldehyde is more easily vaporized as the temperature is higher, the vaporization of the perfusion fixing solution can be suppressed by lowering the temperature of the perfusion fixing working unit. By suppressing vaporization of the perfusion fixing solution, formaldehyde and the like diffusing around the perfusion fixing table can be reduced. In addition, under low temperature conditions, when perfusion fixation of an autopsy specimen (organism), the progress of tissue degeneration and blood coagulation is suppressed, and better tissue retention is possible. It is desirable that
The cooling means can be realized by arranging the low temperature side of the heat exchanger around the perfusion fixing work part. Since the air exhausted from the perfusion fixing table is discharged outside the room, the heat generated on the high temperature side of the heat exchanger can also be discharged together.

Moreover, there may exist the following as a preferable embodiment.
The air supply duct is a combination of two or more types of flexible ducts having different mechanical characteristics.

  For example, by making the diameter of the upper flexible duct larger than the diameter of the lower flexible duct, it is possible to reduce the shielding around the perfusion fixing work part by the lower flexible duct while ensuring the mechanical strength by the upper flexible duct. Compatibility and stability. The flexible duct is not limited to two types, and three or more types may be used for finer adjustment.

Moreover, there may exist the following as a preferable embodiment.
There is further provided a drainage flow path switching unit provided at a lower part of the drainage port and switching an outflow path of the waste liquid discharged from the drainage port.

  For perfusion fixation, use a perfusion fixative and water. There is no problem even if water flows into sewage, but perfusion fixatives such as formaldehyde do not flow into sewage but need to be stored in a waste tank. By providing the drainage flow path switching means, it is possible to separate the liquid that can flow into the sewage and the liquid that needs to be stored in the waste liquid tank.

Moreover, there may exist the following as a preferable embodiment.
The air supply unit is fixed to the pedestal body,
The air supply fan feeds room air into the air supply duct.

  Since the air supply fan and the flexible duct may be relatively small, the apparatus can be reduced in size by fixing the air supply unit to the perfusion fixing base itself. In addition, since air can be introduced up to the top of the perfusion fixing work section by using the flexible duct, the air supply fan may be of a size that introduces room air.

  According to the perfusion fixing base of the present invention, the conventional problems can be solved and formaldehyde and the like in the work environment can be efficiently removed with a simple configuration.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of the perfusion fixing base of the present embodiment, FIG. 2 is a top view of the pedestal body, and FIG. 3 is a perspective view of the perfusion fixing base on the AA ′ plane in FIG. FIG. 4 is a cross-sectional view, and FIG. 4 is an external view of an air supply unit. In the figure, reference numeral 1 denotes a pedestal main body of the perfusion fixing device, 2 a perfusion fixing working unit for carrying out a perfusion fixing work by placing an autopsy specimen (living body), and 3 denotes air introduced above the perfusion fixing working unit 2 An air supply unit 4 is provided at the uppermost part of the air supply unit 3, and an air supply fan that introduces indoor air into the air supply unit 3, and 5 a and 5 b are air above the perfusion fixing work unit 2. An air supply duct composed of a flexible duct to be guided, 6 is an illumination device or an imaging device provided at the tip of the air supply duct 5, 7 is a column for fixing the air supply unit 3 to the base body 1, and 8 is a perfusion fixing work unit 2. , An exhaust port for exhausting the perfusion fixing liquid vaporized by the perfusion fixing work unit 2, 9 a drainage port for discharging water flowing out from the perfusion fixing work unit 2 or a perfusion fixing solution, and 10 a drainage port 9. Drain flow path switching level that switches the flow path of the discharged liquid to the drain outlet or waste water tank Chromatography, waste liquid tank for storing spent perfusion fixative (formaldehyde, etc.) 11, 12 is an exhaust fan, the switch of the air supply fan 4 and a lighting device 6 13 for discharging air from the exhaust port 8 to the outside.

  Although the material of the base body 1 is not particularly limited, stainless steel is preferable. The perfusion fixation working part 2 and its peripheral members have a structure that can be easily disassembled, and are easy to disassemble and clean. Although not shown, a cooling means can be provided around the perfusion fixing working unit 2. As the cooling means, for example, a heat exchanger is used, the low temperature side is provided around the perfusion fixing working unit 2, and the heat on the high temperature side is exhausted to the outside by the exhaust fan 12. The perfusion fixing work unit 2 has a structure in which the drainage can be easily flowed down using a punching saw, etc., and the drainage is discharged from the drainage port 9. Directly below the drainage port 9, there is a channel switching means, and the drainage channel switching lever 10 can switch the drainage channel. One of the switching channels is connected to a drain outlet for discharging water or the like, and the other is connected to a waste liquid tank 11 for storing formaldehyde or the like, and can be switched according to the liquid to be used. An exhaust port 8 for exhausting the vaporized perfusion fixing solution is provided around the perfusion fixing working unit 2 and is exhausted to the outside by an exhaust fan 12. The periphery of the perfusion fixing work part 2 has a so-called sink structure, and is arranged at a position recessed from the upper surface of the base body 1. As a result, the waste liquid is discharged from the liquid discharge port 9 without splashing outside.

  In the perfusion fixing base of the present embodiment, the air supply fan 4 may be small because air can be introduced to the top of the perfusion fixing work unit 2 by the air supply unit 3. In addition, it is not necessary to introduce air from outside, and it is sufficient to introduce indoor air, so the system can be downsized. For this reason, it is possible to fix the air supply part 3 to the base main body 1 with the support | pillar 7. FIG. The air supply duct 5 includes two or more types of flexible ducts having different mechanical characteristics and diameters. In this embodiment, the air supply duct 5 includes an upper air supply duct 5a and a lower air supply duct 5b. For example, by making the diameter of the lower air supply duct 5b smaller than the diameter of the upper air supply duct 5a, the mechanical strength is maintained by the large diameter of the upper air supply duct 5a, and the perfusion is performed by the small diameter of the lower air supply duct 5b. It is possible to prevent the work of the fixed working unit 2 from being hindered. In the present embodiment, an example in which the air supply duct is composed of two types of ducts is shown, but one type of duct may be used as long as both workability and mechanical strength can be achieved, and three or more types of ducts may be used for finer adjustment. May be used. If a balancer is provided in the air supply unit 3, the desired position of the air supply duct 5 and the illumination device / imaging device 6 which are flexible ducts can be stopped. If the illumination device / imaging device 6 is arranged in the vicinity of the central axis of the air supply duct 5 so that air passes through the outer periphery of the air supply duct, the air emitted from the air supply duct 5 flows outward. It becomes easy to flow in the direction of the exhaust port 8. In this embodiment, the air supply unit 3 is fixed to the pedestal main body 1 and the air supply fan 4 introduces indoor air. However, the present invention is not limited to this, and the air supply unit 4 may be changed as appropriate according to the installation form and use form. Is possible. Further, the pedestal main body 1 may be an integral moving type by attaching casters or the like, or may be one in which an exhaust port 8, an exhaust fan 12, a drain port 9, a waste liquid tank 11 and the like are incorporated in an existing sink.

Hereinafter, usage forms of the present embodiment will be described. First, an autopsy specimen (organism) to be fixed by perfusion is placed on the perfusion fixing work unit 2. When the perfusion fixing work is performed using a perfusion fixing solution such as formaldehyde, the drainage channel switching lever 10 is set to the waste liquid tank 11 side. When drainage can be poured into sewage by washing, etc., the drainage flow path switching lever 10 is set to the drain outlet side. By moving the air supply duct 5 to the vicinity of the subject (organism) to be killed, the perfusion fixative vaporized around the subject (organism) to be killed can be efficiently flowed to the exhaust port 8. In addition, since the illumination device 6 is provided at the tip of the air supply duct 5, it is possible to illuminate the subject (organism) to be illuminated brightly. When the perfusion fixation work is finished, the subject to be autopsied (organism) can be easily taken out by lifting the air supply duct 5.
As described above, by using the perfusion fixing table of the present embodiment, the vaporized perfusion fixing liquid can be effectively exhausted with a simple configuration, and the perfusion fixing operation can be performed safely.

  Although an example of the embodiment of the present invention has been described above, the present invention is not limited to this, and it goes without saying that various modifications can be made within the scope of the technical idea described in the claims. Yes.

The figure which looked at the perfusion fixing stand of this embodiment from the side. The figure which looked at the perfusion fixed base of this embodiment from the upper part of the base body. Sectional drawing of the A-A 'surface of the perfusion fixing stand of this embodiment. The external view of an air supply part.

Explanation of symbols

1: Pedestal body 2: Perfusion fixation working unit 3: Air supply unit 4: Air supply fan 5a: Air supply duct (upper part) 5b: Air supply duct (lower part) 6: Lighting device / imaging device 7: support, 8: exhaust port, 9: drainage port, 10: drainage flow path switching lever, 11: waste liquid tank, 12: exhaust fan, 13: switch

Claims (5)

A perfusion fixing table for perfusing and fixing an organism using a perfusion fixing solution,
A pedestal body on which the organism to be perfusion-fixed is placed;
On the upper surface of the pedestal main body, the perfusion fixation working unit capable of placing the organism and discharging the perfusion fixation liquid to the lower part,
A drainage port provided at a lower portion of the perfusion fixation working unit, for discharging the perfusion fixation solution;
An exhaust port provided around the perfusion fixation working unit;
An air supply unit provided above the perfusion fixing working unit;
Cooling means comprising a heat exchanger provided on the pedestal main body and having a low-temperature side provided around the perfusion fixing work part in order to cool the perfusion fixing work part,
Have
The air supply unit includes an air supply fan, and an air supply duct that sends air from the air supply fan to the periphery of the perfusion fixing working unit,
The air supply duct is a combination of two or more types of flexible ducts having different mechanical characteristics, and the diameter of the lower flexible duct is smaller than the diameter of the upper flexible duct, and the air supply direction can be varied.
A perfusion fixation table. An illumination device or an imaging device is provided inside the air delivery side of the air supply duct.
The perfusion fixation table according to claim 1, wherein A drainage channel switching means provided at a lower portion of the drainage port, for switching an outflow path of waste fluid discharged from the drainage port;
The perfusion fixation table according to claim 1 or 2 , characterized in that. The air supply unit is fixed to the pedestal body through a support ,
The air supply fan is configured to send room air around the air supply unit to the air supply duct.
The perfusion fixation table according to any one of claims 1 to 3, wherein The air exhausted from the exhaust port is exhausted to the outside by an exhaust fan, and the heat generated on the high temperature side of the heat exchanger is also exhausted to the outside.
The perfusion fixation table according to any one of claims 1 to 4, wherein

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