JPH07148205A - Device for pulverizing infectious medical treatment waste - Google Patents

Abstract

PURPOSE:To reduce the cost of discarding by crushing infectious medical treatment waste to smaller particle sizes to enhance a sterilization effect by this crushing and reducing the volume in order to enhance a housing effect as waste. CONSTITUTION:A device main body 20 provided with an infectious medical treatment waste throwing port 21 is internally provided with a hopper 30, a first rough crushing machine 40, a second fine crushing machine 50 disposed in the lower part of this hopper 30 and a sterilization kneading tank 60 disposed to exist horizontally below this second fine crushing machine 50. The device is also provided with a sterilization heating means for maintaining the inside of the sterilization kneading tank 60 at a specified temp. and is provided with a kneading and transporting means 6.4 for feeding the infectious medical treatment waste 25 to the sterilization kneading tank 60 while kneading and sterilizing the infectious medical treatment waste.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infectious medical waste crushing apparatus for sterilizing and crushing infectious medical waste such as used syringes and blood transfusion sets.

[0002]

2. Description of the Related Art Conventionally, as a medical waste treatment apparatus in the medical field, for example, there is an apparatus disclosed in JP-A-3-131261. This medical waste treatment machine is provided with an opening / closing canopy 6 for introducing light metal, paper, glass, plastic, rubber or the like to be sterilized, and an open / close bottom lid 8 for dropping sterilized material to be sterilized. And a heat sterilization tank 5 on the inner surface of which a process for preventing adhesion of the material to be sterilized at the time of melting due to high temperature is applied, and sterilization crushed after sterilization dropped from the heat sterilization tank 5 And a crushing device 30 for crushing the material. Further, in this medical waste treatment machine, in the heat sterilization tank 5,
Hot air is circulated in the tank 5 using the inlet 10 and the outlet 17 provided in the upper half of the tank to keep the temperature in the tank at 160 ° C. for a predetermined time.
The feature is that the temperature is kept at ˜200 ° C. According to the medical waste treatment machine having such a structure and characteristics, medical waste can be safely treated and discarded by heat sterilization without using a disinfectant.

Further, as a medical waste treatment apparatus, for example, there is an apparatus disclosed in Japanese Examined Patent Publication No. 4-50020. This processing apparatus includes an outer shell container 30 that can be sealed, a disinfecting container 1 that is rotatably supported above the outer shell container 30, and a first guide plate 11 that is installed below the disinfecting container 1. Crushing means 2 for crushing the disinfected waste falling from the sterilization container 1 reversed via the crushing means 2 and crushing falling from the crushing means 2 via the second guide plate 22 provided below the crushing means 2. A centrifuge 3 for separating waste into metal and non-metal, and a crushed metal and non-metal crushed product falling from the centrifuge 3 for each of the delivery pipes 3.
It is provided with a bag filling machine 4 for individually sealing via a, 3b, 3c, and the crushing means 2 further comprises a cutter mechanism (not shown) for pre-treating waste and a pair of meshes made of super steel material and meshing with each other. The cutter mechanism (not shown) has an outer cylinder, a large number of cutters that rotate at high speed in the outer cylinder, and an inner peripheral surface having a large number of cutters and through holes provided at the bottoms of the respective cutters. It is characterized by having a configuration including an inner cylinder.

This medical waste treatment machine having such a construction and features disinfects syringes and other medical wastes contaminated with bacteria, viruses, etc. to eliminate the risk of secondary infection. By crushing these, then separating them into metal and other crushed materials, and sealing each in a resin bag, safe and speedy treatment of medical waste can be performed at low cost, and infection accidents caused by medical waste can be prevented. It is said that it can be surely prevented.

By the way, the medical waste treatment devices in these publications exemplified are completely prevented from secondary infection by a medical waste such as syringes and viruses contaminated with bacteria and viruses in the waste treatment route, and finally discharged. Medical waste as waste that can be efficiently stored in a dedicated bag, etc., so that it can be reduced in size so as to reduce the disposal cost. It is important that the garbage can be handled like general safe garbage.

[0006]

However, in the above-mentioned conventional devices, since the prototype medical waste before crushing is sterilized, the details such as hidden parts of the medical waste may be completely sterilized. There was anxiety that the treatment was not always applied. In addition, these conventional devices melt medical wastes that have been atomized at high temperature during sterilization, or the frictional heat generated from the blades during pulverization of medical wastes melts the medical wastes that are atomized into blades. There was a problem in that a piece of medical waste, which adheres or sticks when crushed, bites into the blade and impedes crushing efficiency. As a result, it was not possible to reduce the size of medical waste, and it was not possible to reduce the volume that can be efficiently stored, which leads to a reduction in disposal cost.

Therefore, the present invention has been made to solve the above-mentioned conventional technical problems, and an object thereof is to reduce the size of infectious medical waste and to improve the sterilization effect by reducing the size. Another object of the present invention is to provide an infectious medical waste pulverization processing apparatus that can reduce the volume of waste to reduce the disposal cost by increasing the storage efficiency.

[0008]

The present invention has been made in order to achieve the above-mentioned object, and its gist is to provide a device in a main body of a hermetically-sealed structure having an infectious medical waste input port at the top thereof. A hopper formed so as to focus toward the lower part of the main body, a first rough crusher for crushing the infectious medical waste dropped from the input port into the hopper and sending it downward, and the hopper below the hopper. A second fine crusher which is provided and discharges the infectious medical waste sent under pressure from the first rough crusher while finely crushing it downward, and a second fine crusher
It is provided so as to lie below the fine crusher, and has an inlet for infectious medical waste supplied from the second fine crusher on the upstream side and an outlet for non-infectious medical waste on the downstream side. A sterile kneading tank having the same is provided, and a sterilizing heating means is provided so as to maintain a constant temperature in the sterile kneading tank from the upstream side to the downstream side in the sterile kneading tank, and the infectious medical waste in the sterile kneading tank is provided. An infectious medical waste pulverizing apparatus comprising: a kneading and conveying means for feeding the infectious medical waste while kneading and sterilizing the infectious medical waste from the vicinity of the supply port to the vicinity of the outlet of the non-infectious medical waste. is there.

[0009] In an infectious medical waste crushing and treating apparatus characterized in that a drying, deodorizing and sterilizing medium input port is provided at the upstream end of the sterilization kneading tank. An infectious medical waste pulverizing apparatus is characterized in that the kneading and conveying means is composed of a rotatable kneading and conveying spiral blade. An infectious medical waste pulverization treatment device, characterized in that a sterilization kneading tank is integrally provided with sterilization heating means.

The infectious medical waste pulverization treatment apparatus is characterized in that the kneading and conveying spiral blade is provided with sterilizing and heating means.

[0011]

According to the apparatus for pulverizing and treating infectious medical waste having the above-mentioned structure, the infectious medical waste pulverizing apparatus is focused in the apparatus main body having a hermetically sealed structure having the infectious medical waste input port downward toward the apparatus main body. The formed hopper, the first rough crusher for compressing and sending the infectious medical waste dropped from the input port into the hopper, and the first rough crusher provided under the hopper, and the first rough crusher. A second fine crusher that discharges the infectious medical waste pumped from the machine while crushing it downward, and a second fine crusher that is provided so as to lie below the second fine crusher and has a second upstream side. A sterile kneading tank having a supply port for infectious medical waste supplied from a fine crusher and a discharge port for non-infectious medical waste on the downstream side is provided.
A sterilization heating means is provided from the upstream side to the downstream side in the sterilization kneading tank so as to maintain the inside of the sterilization kneading tank at a constant temperature, and a non-infectious medical treatment is provided from the vicinity of the infectious medical waste supply port of the sterilization kneading tank. Since the kneading and conveying means for feeding the infectious medical waste while kneading and sterilizing the infectious medical waste is provided in the vicinity of the waste discharge port, the infectious medical waste thrown into the apparatus main body is collected by the hopper, It is pumped and crushed by the first rough crusher. The infectious medical waste that is roughly crushed and sent under pressure is finely cut into cutting powder by the second fine crusher. The infectious medical waste that has been cut into cutting powder is supplied from the upstream of the sterilization kneading tank, reaches the downstream while being kneaded and sterilized by the sterilization heating means and the kneading transfer means of the sterilization kneading tank, and is made into small particles. Discharged as infectious medical waste. Therefore, the infectious medical waste that has been reduced in size is sterilized while being kneaded from the upstream to the downstream by the sterilization kneading tank, so that the sterilization effect is widely spread to the infectious medical waste that has been reduced in size and completely sterilized. Obtain non-infectious medical waste.

Further, according to the apparatus for crushing infectious medical waste according to the above claims 2 to 5, a medium for drying, deodorizing and sterilizing is provided at the upstream end of the sterilizing kneading tank, and the kneading and conveying means is rotatable. Since the sterilization heating means is integrally provided in the sterilization kneading tank, and the sterilization heating means is provided in the sterilization kneading conveyance spiral blade, the infectious medical waste is granulated in the sterilization tank. Is dried, deodorized, and sterilized by a medium for drying, deodorizing, and sterilizing, and is further efficiently kneaded and fed to a non-infectious medical waste discharge port by a kneading and conveying spiral blade, and further integrated in a sterilizing kneading tank. Sterilization heat means that is applied to the kneading / conveying spiral blade, or the sterilization heating means that is applied to the kneading / conveying spiral blade, enables efficient sterilization and heating in an atmosphere maintained at a constant temperature. Deodorizing / sterilizing medium Improve the sterilization efficiency of infectious medical waste by preventing the infectious medical waste from melting due to dry heat and improving the kneading effect of the sterilization kneading tank to promote the granulation. In addition, since the non-infectious medical waste in the form of granules is obtained, the volume of the waste can be reduced and the disposal cost can be further reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 1 to 7 show an embodiment of an infectious medical waste crushing treatment apparatus according to the present invention, and FIGS. 8 and 9 show a conventional example. The infectious medical waste crushing treatment apparatus of the present invention shown in FIG. 1 has a device main body 20, a hopper 30, a first rough crushing machine 40, a second fine crushing machine 50, as its main components. It is composed of a sterilization kneading tank 60 and has a closed structure.

The apparatus main body 20 is provided with an infectious medical waste input port 21 on the upper side surface thereof, and a sterilizing / kneading tank 60 drying / drying portion is provided on the intermediate side surface thereof as shown by reference numeral 22 in the figure.
Drying / deodorizing connected to the deodorizing / sterilizing medium input port 61
A medium tank for drying, deodorizing and sterilizing is provided through a medium supply pipe for sterilization 23. The drying / deodorizing / sterilizing medium tank 22 stores a solvent such as lime as a drying / deodorizing / sterilizing medium. Further, infectious medical waste indicated by reference numeral 25 in the figure is input into the input port 21.

The infectious medical waste 25 is, for example, a dust box in which used syringes, blood transfusion sets, etc. are placed. Inside the infectious medical waste input port 21 is opened, the hopper 30 is formed so as to reduce its diameter toward the lower part of the apparatus main body 20 and converge. This hopper 3
At 0, the infectious medical waste 25 input from the input port 21 is accumulated, and a guide is formed so that the infectious medical waste 25 is supplied toward the second fine crusher 50 below. ing. The first rough crusher 40 is fixed to one side surface of the inner surface of the hopper 30.

The first rough crusher 40 is composed of a press feeder in which a breaking pawl 41 is provided on an endless annular belt, and the breaking pawl 41 is driven to rotate in the clockwise direction, so that the hopper 30
It has a structure in which the infectious medical waste 25 is crushed while being pinched by the inner surface of the and the breaking nail 41. The infectious medical waste 25 is crushed by the first rough crusher 40 and supplied to the second fine crusher 50 below so as to be easily supplied.

As shown in FIGS. 6 and 7, the second fine crusher 50 has a hopper 51 at the upper portion and a pair of rotary cutters 52, 52 at the lower portion of the hopper 51.
And a communication pipe 53 communicating with the infectious medical waste supply port 62 of the sterilization / kneading tank 60 is provided below the rotary cutters 52, 52. As can be seen from FIG. 2, the gears are formed so as to mesh with each other in the axial direction, and are fixed to the apparatus main body 20.

The sterilizing and kneading tank 60 is the second fine crusher 5
It is fixed below 0 and lies in the lateral longitudinal direction of the apparatus main body 20. The sterilization / kneading tank 60 is in the form of a closed cylinder, and in this cylinder, the drying / deodorization / sterilization medium supply pipe 23 connected to one end which is the upstream end is connected to the drying / deodorization / sterilization. A medium input port 61 is provided,
The communication pipe 53 is provided directly below the communication pipe 53 of the second fine crusher 50.
An infectious medical waste supply port 62 is provided which is connected to and communicated with, and a non-infectious medical waste discharge port 63 is provided at the other end, which is the downstream end.

In addition, in the cylinder of the sterilization kneading tank 60, the infectious medical waste is fed while being kneaded and sterilized from the drying / deodorizing / sterilization medium input port 61 to the non-infectious medical waste discharge port 63. Conveying means 64 is provided. The kneading / conveying means 64 is composed of a kneading / conveying spiral blade 65 and a kneading / conveying spiral blade shaft 66. The kneading / conveying spiral blade shaft 66 has spiral blades 65 spirally arranged and fixed to rotate. It is supported by the sterilization kneading tank 60 as possible. That is, as shown in FIGS. 3 and 4, the spiral blades 65 are radially arranged in four directions around the shaft 66, and as shown in FIG. 2, the infectious medical waste 25 is moved from upstream to downstream. It is fixed to the shaft 66 in a spiral shape so that it can be kneaded and conveyed toward it.

Further, the sterilization / kneading tank 60 has a constant temperature, for example, about 180 ° C. from upstream to downstream in the sterilization / kneading tank.
A sterilization heating means 67 capable of maintaining heating is provided in the sterilization heating means 67. As shown in FIG. The infectious medical waste crushing / processing apparatus configured as described above operates as follows.

First, the infectious medical waste 25 consisting of a dust box is charged into the apparatus main body 20 through the charging port 21. Infectious medical waste 25 dropped in the device body 20
Reaches the first rough crusher 40 by the hopper 30 and is crushed and crushed by the breaking claws 41 of the first rough crusher 40 while being sandwiched between the hopper 30 and the first rough crusher 40 and is moved downward. Pumped.

The infectious medical waste 25 crushed by the first rough crusher 40 is sent under pressure to the second fine crusher 50 and reaches the hopper 51 of the second fine crusher 50.
It is discharged downward while being finely cut by the shearing action of a pair of rotating cutters 52, 52 that mesh with each other under the hopper 51. The infectious medical waste 25 finely cut by the second fine crusher 50 is transferred to the second fine crusher 50.
It is dropped and supplied into the sterilization kneading tank 60 through the communication pipe 53 of the above, and the infectious medical waste supply port 62 of the sterilization kneading tank 60 thereunder.

The infectious medical waste 25 thrown into the sterilization kneading tank 60 is sterilized and mixed by the kneading and conveying means 64.
Is kneaded and conveyed from the infectious medical waste supply port 62 toward the non-infectious medical waste discharge port 63, but before that, in the sterilization kneading tank 60, the shaft 65 with kneading and conveying blades of the kneading and conveying means 64. Is rotating, and the solvent such as lime supplied from the drying / deodorizing / sterilizing medium input port 61 through the supply pipe 23 of the drying / deodorizing / sterilizing medium tank 22 in advance is started to be conveyed in the downstream direction.

That is, the infectious medical waste 25 in the sterilization / kneading tank 60 is supplied from the communication pipe 53 of the second fine crusher 50, and a plurality of spiral blades 66 of the rotating kneading / conveying blade shaft 65. When it is kneaded by, it is conveyed toward the downstream non-infectious medical waste discharge port 63 while being combined and kneaded together with the drying, deodorizing and sterilizing medium already conveyed from the upstream. Moreover, at this time, the infected medical waste 25 kneaded in the sterilization kneading tank 60 is sterilized and kneaded by the heater portion 68 of the sterilization heating means 67 integrally wound around the outer periphery of the cylindrical portion of the sterilization kneading tank 60. Sterilization is performed in an atmosphere in which the temperature inside 60 is maintained at, for example, about 180 ° C. Further, the infectious medical waste 25 in the sterilization / kneading tank 60 is sterilized not only by heat sterilization by the sterilization heating means 67, but also by a medium for drying / deodorizing / sterilization. Further, the infectious medical waste 25 is kneaded by the spiral blades 66 of the kneading / conveying means 64 so as to knead the infectious medical wastes 25 that are finely divided or granulated while being pushed toward the downstream side. Not only is it agitated to make finer particles, but it is also dried by a medium for drying, deodorizing, and sterilizing, which promotes particle size reduction. Further, the infectious medical waste 25 is deodorized by the drying, deodorizing and sterilizing medium to remove the odor associated with drying and heating during sterilization of the infectious medical waste 25.

In this embodiment, the kneading and conveying means 64 is
The kneading / conveying spiral blade 65 and the kneading / conveying spiral blade shaft 66 in which the blades 65 are spirally arranged and the shaft 66 is configured to rotate. However, the present invention is not limited to this. It is also possible to provide a spiral fin and to rotate this cylindrical body. Further, the heater section 68 in the present embodiment is not necessarily wound around the outer circumference of the cylindrical section of the sterilization / kneading tank 60, and the kneading / conveying spiral blade shaft 66 of the kneading / conveying means 64 is provided.
It is also possible to fit the heater part in a rod shape. Furthermore, the sterilization / kneading tank 60 can also be used by the heater part on the outer circumference of the cylindrical part and the heater part of the kneading / conveying spiral blade shaft 66.

[0026]

As described above, according to the present invention, a hopper formed so as to be focused toward the lower side of the device body is provided in the device body having a hermetically sealed structure having an infectious medical waste inlet in the upper part thereof. The first is to crush the infectious medical waste dropped from the input port into the hopper while sending it downwards.
Of the rough crusher and the lower part of the hopper.
Second crusher that discharges the infectious medical waste pumped from the rough crusher while crushing it downward, and is installed so as to lie below the second crusher and to the upstream side. A sterile kneading tank having a supply port for infectious medical waste supplied from the second fine crusher and a discharge port for non-infectious medical waste is provided on the downstream side, and the upstream side in the sterile kneading tank is provided. The sterilization heating means is provided on the downstream side of the sterilization kneading tank so as to keep the temperature inside the sterilization kneading tank at a constant temperature, and the infection from the vicinity of the infectious medical waste discharge port to the vicinity of the non-infectious medical waste discharge port of the sterilization kneading tank. By providing kneading and conveying means for feeding sexual medical waste while kneading and sterilizing,
The infectious medical waste can be reduced in size, and by reducing the size, the sterilization effect can be enhanced, and the volume can be reduced to increase the storage efficiency as waste, thereby reducing the disposal cost.

Further, at the upstream end of the sterilization / kneading tank, drying / deodorizing /
A sterilizing medium input port is provided, and the kneading and conveying means is a rotatable kneading and conveying spiral blade, the sterilizing and kneading tank is integrally provided with sterilization heating means, and the kneading and conveying spiral blade is further provided with sterilization heating means. Therefore, the infectious medical waste that is made into small particles in the sterilization tank is dried, deodorized, and sterilized by the medium for drying, deodorizing, and sterilizing, and the kneading and conveying spiral blades efficiently discharge it to the non-infectious medical waste discharge port. Efficiently in an atmosphere kept at a constant temperature after being kneaded and fed, and further by sterilization heat means integrally provided in the sterilization kneading tank or sterilization heating means provided on the kneading / conveying spiral blade. It is sterilized and heated, and in addition to such sterilizing effect, it can be dried and
Sterilization of infectious medical waste can be prevented by mixing with deodorizing and sterilizing media to prevent infectious medical waste from melting due to dry heat and improving the kneading effect of the sterilization kneading tank to promote granulation. The efficiency can be improved, and since the non-infectious medical waste in the form of small particles is obtained, the volume of the waste can be reduced and the disposal cost can be further reduced.

[Brief description of drawings]

FIG. 1 is a side view showing a schematic structure of an infectious medical waste pulverization processing apparatus of the present invention.

2 is an enlarged side view showing a kneading and conveying spiral blade shaft of the kneading and conveying means of FIG.

3 is a front view of the kneading and conveying spiral blade shaft of FIG.

FIG. 4 is an enlarged front view showing the kneading and conveying spiral blade of FIG.

5 is a partially enlarged sectional view of the sterilization kneading tank of FIG.

6 is a plan view of the second fine crusher shown in FIG. 1. FIG.

7 is a side view showing the pair of rotary cutters of FIG. 6. FIG.

FIG. 8 is a front view showing a conventional device.

FIG. 9 is a side view showing an outline of a conventional device.

[Explanation of symbols]

 20 Device Main Body 21 Input Port 22 Drying / Deodorizing / Sterilizing Medium Tank 23 Drying / Deodorizing / Sterilizing Medium Supply Pipe 25 Infectious Medical Waste 40 First Rough Crusher 41 Crushing Claw 50 Second Fine Grinding Machine 51 Hopper 52,52 A pair of rotary cutters 53 Communication pipe 60 Sterile kneading tank 61 Drying / deodorizing / sterilizing medium input port 62 Infectious medical waste supply port 63 Non-infectious medical waste discharge port 64 Kneading and conveying means 65 Kneading and conveying spiral blade 66 kneading / conveying spiral blade shaft 67 sterilization heating means 68 heater part

Claims (5)

[Claims] 1. A hopper formed so as to focus toward the lower part of the device main body in an apparatus main body having a hermetically sealed structure having an infectious medical waste input port at the upper part, and dropping into the hopper from the input port. A first rough crusher for squeezing the infectious medical waste that has been crushed and sending it downward, and an infectious medical waste that is provided under the hopper and that has been sent under pressure from the first rough crusher is directed downward. A second fine crusher that discharges while crushing finely, and a supply of infectious medical waste that is provided so as to lie below the second fine crusher and that is supplied upstream from the second fine crusher A sterilizing kneading tank having a mouth and a discharge port for non-infectious medical waste is provided on the downstream side, so that the sterilizing kneading tank can be maintained at a constant temperature from the upstream side to the downstream side in the sterilizing kneading tank. In addition to providing sterilization heating means, It is characterized in that a kneading and conveying means for feeding the infectious medical waste while kneading and sterilizing the infectious medical waste from the vicinity of the infectious medical waste supply port of the bacteria kneading tank is provided near the non-infectious medical waste discharge port. Infectious medical waste pulverizer. 2. The infectious medical waste pulverization processing apparatus according to claim 1, wherein a drying, deodorizing, and sterilizing medium input port is provided at the upstream end of the sterilization kneading tank. 3. The infectious medical waste pulverizing apparatus according to claim 1, wherein the kneading and conveying means comprises a rotatable kneading and conveying spiral blade. 4. The infectious medical waste pulverizing apparatus according to claim 1, wherein the sterilizing kneading tank is integrally provided with sterilizing heating means. 5. The infectious medical waste pulverization processing apparatus according to claim 3, wherein the kneading and conveying spiral blade is provided with sterilization heating means.