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Title:
SAFE DEVICE FOR DISPOSAL OF INFECTIOUS HOSPITAL WASTE USING MICROWAVE TECHNOLOGY
Document Type and Number:
WIPO Patent Application WO/2019/122989
Kind Code:
A1
Abstract:
Hospital waste including infectious wastes, pathologic wastes, sharp objects, pharmaceutical wastes, carcinogenic wastes, chemical wastes, radioactive wastes, capsules with high-pressure gas and heavy metals wastes. Hazardous wastes and their destruction is one of the worrying and important problems that require the special attention of urban planners and managers. In this machine, microwave technology is used to dispose of infectious waste. In this method, microwave energy in band S which is the working frequency of 2,45 GH is used to change the polarity of water molecules and generate energy. By creating this wave through Magnetron lamps and injecting it inside the waste tank and intensifying the reflection of these waves within 45 minutes, the temperature of microorganism molecules reaches over 98 degrees.

Inventors:
FOJLALEY, Mehrdad (West Azarbayjan Science and Technology Park-14km urmia sero road, Urmia, 43611, 5713943611, IR)
NASROLLAHI NARGESABAD, Reza (west azarbayjan science and technology park-14km urmia sero road, Urmia, 74159, 5714974159, IR)
ROMOOZI, Elham (No 2, Floor -1 Nikan Building, Shahid Beheshti Street, Kashan 78399, 8714678399, IR)
LOTFOLLAHZADEH, Saran (Mofid subspecialty children hospital, Dr Shariati stree, Tehran 15514, 1546815514, IR)
Application Number:
IB2017/058388
Publication Date:
June 27, 2019
Filing Date:
December 23, 2017
Export Citation:
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Assignee:
FOJLALEY, Mehrdad (West Azarbayjan Science and Technology Park-14km urmia sero road, Urmia, 43611, 5713943611, IR)
MAHMOUDI, Mortaza (west azarbayjan science and technology park-14km urmia sero road-, Urmia, 15322, 5756115322, IR)
NASROLLAHI NARGESABAD, Reza (west azarbayjan science and technology park-14km urmia sero road, Urmia, 74159, 5714974159, IR)
ROMOOZI, Elham (No 2, Floor -1 Nikan Building, Shahid Beheshti Street, Kashan 78399, 8714678399, IR)
LOTFOLLAHZADEH, Saran (Mofid subspecialty children hospital, Dr Shariati stree, Tehran 15514, 1546815514, IR)
International Classes:
A61L11/00; B02C19/00; B09B3/00
Attorney, Agent or Firm:
NASIRI AZAM, Bijan (Unit 13- No 4- Mir jahangiri Alley-, Between Malek and Bahar Shiraz St-Shariyati S, Tehran 38338, 1565838338, IR)
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Claims:
Safe device for disposal of infectious hospital waste using microwave technology

Claims

1. Safe device for disposal of infectious hospital waste using microwave technology comprising:

a. Wave guide

b. Magnetron feed switching (Systematic)

c. General Feeding Schematic circuit

2. Microwave energy in band S which is the working frequency of 2,45 GH is used to change the polarity of water molecules and generate energy.

3. By creating this wave through Magnetron lamps and injecting it inside the waste tank and intensifying the reflection of these waves within 45 minutes, the temperature of microorganism molecules reaches over 98 degrees.

4. The number of microwave generators is designed based on the level of required energy and the dimension of tank which varies from 3 to 12 generators.

5. Microwave generators are made of Magnetron Cantina which is powered by 1 ,3 KW at a frequency of 2,45 GH.

6. The input power of microwave is 5 KV DC which is supplied by voltage rc circuit.

7. Two capacitors, one connected to a phase and the other connected to the pole, the middle one is intended to be connected to the ground.

8. Wave guide which is used to transmit waves and to unify the distribution of energy in the tank Also the gas exhaust outlet is shown in this figure, which consists of three parts: a high round fan, active carbon filter and Hepa filter.

Description:
Safe device for disposal of infectious hospital waste using microwave technology

Description

Technical Field of the Invention

The technical field of this invention relates to the medical equipments and biosystem mechanic.

Technical Problem

Hospital waste including infectious wastes, pathologic wastes, sharp objects, pharmaceutical wastes, carcinogenic wastes, chemical wastes, radioactive wastes, capsules with high-pressure gas and heavy metals wastes. Hazardous wastes and their destruction is one of the worrying and important problems that require the special attention of urban planners and managers.

These wastes might be dangerous. According to the international regulations such features as being toxic, flammable, reactive, carcinogenic leads to the categorization of chemical waste into the dangerous waste. Non-dangerous chemicals are the materials that do not have the above mentioned features and include sugars, amino acids and some of the mineral and organic salts.

Prior Art

Some solutions have been provided to remove the above stated problems. In sterilization with auto clove method, time - temperature, pressure, type of waste, type of dish, method of loading and the maximum level of loading must be considered. This method is applicable for infectious and sharp wastes and the chemical or pharmaceutical wastes should not be sterilized by this method. In case auto clove without chopper is used, then safe bag and dishes (S.B) with waste must be able to be auto cloved.

The amount of wastes which are put inside the device must be appropriate with the volume of the auto clove and the time of sterilization depends on the extent and density of the load (waste). The device must be calibrated at least once a year and the documents must be available, Using chemical features (like heat sensitive strip) is essential for each working cycle when sterilization is performed to show that suitable conditions for sterilization is created.

Brief Description of the Invention:

In this machine, microwave technology is used to dispose of infectious waste. In this method, microwave energy in band S which is the working frequency of 2,45 GH is used to change the polarity of water molecules and generate energy. By creating this wave through Magnetron lamps and injecting it inside the waste tank and intensifying the reflection of these waves within 45 minutes, the temperature of microorganism molecules reaches over 98 degrees.

During this time, according to the carried out tests, all of the spores especially the strongest one which is bacillus subtilis will be destroyed on a scale of 10 logs, 6. The machine has waste tank which is opened and closed by a double glazed door and microwave generators are formed.

The number of microwave generators is designed based on the level of required energy and the dimension of tank which varies from 3 to 12 generators. Microwave generators are made of Magnetron Cantina which is powered by 1 ,3 KW at a frequency of 2,45 GH.

The system has independent steering circuit which supplies the power for microwave generators based on the user's need. The input power of microwave is 5 KV DC which is supplied by voltage rc circuit.

In the existing microwave systems, transformer circuits are used to supply the power of magnets threshold which include several deficits including the burning of transformers, high consumption of power, high temperature in the circuit, need for stabilizer and .... However, in the switching circuit designed for this invention, this problem is eliminated and the use of power has decreased y 30 percent. The most significant advantage of feeding circuit in the switching is its high efficiency. Since the switching transistor works only in the area of interruption and saturation (in the interruption mode, the flow is negligible and in saturation mode, voltage drop is low). Therefore, power is very low which increases the efficiency of feeding source.

According to the regulations for electromagnetic interference and radio frequency, switching feeding source has electromagnetic interference filter circuit at its inlet before the diode bridge consisting of a number of capacitors and inductors. Two capacitors, one connected to a phase and the other connected to the pole, the middle one is intended to be connected to the ground. This creates a capacitor voltage division which connects the reference line of the device to a voltage which is equal to the half of the city power. The high impedance of this line creates a mild bite mode in the user, so there is a risk of electric shock to the user, while linear transient electricity is not controlled causing damage or death to the user.

The other innovation of this system is designing a new wave guide for increasing the power to decrease risk of infectious waste disposal. The designing of wave guide (Figure 3) has an impact on the shape of output wave and reflection. With this wave guide design and how the magnets are arranged, the energy distribution inside the tank is uniform and the energy efficiency inside the tank is high.

The control circuit consists of a PLC based starter and stop, which can control the microwave generator currents, based on the cycle and turn them on and off. At the time of failure, the central control system is able to display the error of the device. Meanwhile, it can show the report of device function daily or monthly and even report the error through the telecom system to the manufacturer.

The system has three types of fans. One is responsible for cooling the microwave generators. The second one is for the gas exhaust and the third one is for the ventilation of inside space of microwave circuit.

In the gas outlet, the carbon-active system is used to filter out unwanted odors and remove toxic gases.

Brief Description of the Drawing:

1. Frontal view of the device

2. Lateral view of the device

3. Wave guide

4. Magnetron feed switching (Systematic)

5. General Feeding Schematic circuit

Detailed Description of the Drawing:

Fig. 1 shows the handle to open and close the door. On the right side of the door, there is a hinge that attaches the door to the body. A lock is mounted on the door that prevents microwave outages by closing the door.

The daily and weekly report of the amount, time and date of the device's safety is provided by the printer in its body. The Touch Viewer screen is installed on the body of the device, which includes touch buttons for start and stop, a safety reporting option as well as monitoring of microwave sources. All possible device errors are displayed on the screen.

There are also separate buttons to start and stop the device. At the top of the device, some lights are installed for optical alarms in which green color indicates the device standby and radiation stop. The yellow color displays an error in the device such as stooping of one of the microwave sources or opening the tank door. The red light shows the start of the microwave radiation.

Figure 2 shows a wave guide which is used to transmit waves and to unify the distribution of energy in the tank. Also, the gas exhaust outlet is shown in this figure, which consists of three parts: a high round fan, active carbon filter and Hepa filter.

In figure 3, the wave guide locations made of stainless steel are displayed.

Advantages of the Invention

1. Low consumption of energy

2. Saving water

3. Easy to use

4. Easy to move

5. Controlling and troubleshooting through internet

6. Not needing stabilizer

7. Not needing special bag

8. Clean air outlet