JP2011078726A - Infectious medical treatment waste sterilizer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To deal with the problem of possibility to perfectly sterilize infectious medical treatment waste without or before crushing or impairing a container housing this waste classified as an industrial waste for which special control is required. <P>SOLUTION: With a priority given to the sterilization, the container of infectious medical treatment waste is placed in a heat resistant box before crushing the container, a nozzle to jet electromagnetic induction overheated steam is installed around the external wall of the enclosing heat resistant box, and high temperature steam is released within the container through a bore opened for sterilizing the waste inside, and also protecting the workers who crush the container from the secondary infection. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The infectious medical waste managed as one of the specially controlled industrial wastes according to the present invention is stored in the pail can of the special container without being crushed and stored in the specially controlled infectious medical waste. Sterilizer that sterilizes waste.

  Infectious medical waste and non-infectious medical waste used in hospitals can be sterilized from the small pieces to the back side of the contained pail can by crushing the contained pail can, and it is safe to transport Because of the ease of the collection, the collectors paid special qualifications and attention, so that they were transported from the hospital to the processor using pail cans.

  Waste generated in the hospital is sorted in the hospital and roughly divided into 4 or 6 types. Of these, the focus on infectious medical waste is whether or not to infect a third party. The contents are glass, metal, plastic, cloth, paper, blood, body fluid, part of the body removed at the time of surgery, injection needle, medical device, tube, drip container, residual liquid, vinyl tube, disinfectant dialysis hose Among them, since the residual solution of the infusion is salt, this is a problem in processing, and when the dialysis hose is incinerated with vinyl chloride, there are big problems, all of which are landfilled and incinerated after sterilization It has been.

There are two types of this medical waste container, and it is impossible to open the lid of the container again after storing the processed material and to close the lid again.
It is necessary to have very strict management and administrative management permission for transporting this processed material to the treatment plant.
As described above, there is a problem that the infectious medical waste in the pail can is preceded by crushing with incomplete sterilization from the outside of the container while being placed under strict control.

If priority is given to crushing without sterilization, there is a risk of infecting workers due to adhesion to the crushing machine or scattering of contents during crushing of the container while controlling the corner so far. In order to prevent such two-dye infection, sterilization before crushing is required.
In particular, since the spring of 2009, there have been reports that class closures have occurred in Japan due to infection with the new influenza.

  The process in the processor is to crush the container containing the infectious medical waste and store it in a sterilizer. The sterilizer stirs both the front and back of the crushed material while stirring with 120 ° C saturated steam. The present situation is that sterilization is carried out by repeating the above agitation and the treatment is performed.

What happens if it is crushed before sterilization in this way? Until it is put into the crusher and pulverized, the storage pail can is solid, withstands a little handling, is handled strictly, and refuses contact with the outside air.
However, when thrown into the crusher, dust and dirty air move due to the centrifugal force of the crushing rotor, causing space contamination, and workers are also dangerous. The crushing chamber air could also become contaminated.

If the method of performing the sterilization process first is performed, sterilization in a pail can is possible, and the problem of contamination can be solved and the work can be performed safely and safely.
JP 2000-271179 NIPPON MEDICAL HYGIENE SERVICE CO., LTD. Overview of medical waste treatment project catalog Suzuyo

  The problem to be solved is that the treated material is infectious medical waste, and since this year (from mid-2009), some schools have closed in Japan due to the epidemic of the new influenza. The entire container is crushed without being sterilized, and sterilization is performed after crushing, so there is a risk of infection during crushing.

  The present invention does not perform sterilization of the pail can containing infectious medical waste after the opening means by opening or crushing, and surrounds the periphery with the treated product being contained in the pail can to generate electromagnetic induction superheated steam. It is ejected from a high-temperature steam outlet provided on the enclosed wall surface, a through-opening is opened in the pail can, and steam is blown into the interior at 500 ° C. to sterilize and then crushed.

  When a pail can containing infectious medical waste is placed on an apron of an apron conveyor and one end of the apron conveyor is moved into a tunnel-shaped interior, the pail can is surrounded by a cover provided in the tunnel so as to wrap the pail can.

  Superheated steam is ejected from the wall surrounding the pail can (this can be the side wall or the top ceiling). High temperature steam is sprayed onto the container with a nozzle to open the through-hole, and high temperature steam is jetted into a pail can for sterilization.

  Cover the pail can with a cover that encloses the side and top surface from the outside of the pail can, and provide a superheated steam spout in the form of a large injection needle on the top surface. Further, sterilize by steaming inside the pail.

  By sterilizing pail cans containing infectious medical waste before crushing, specially managed industrial waste infectious medical waste can be completely sterilized, helping to prevent human and space pollution It also helps prevent infection.

  A container containing infectious medical waste is placed on a conveyor, and the end of the conveyor is enclosed in a tunnel shape to prevent scattering, and a cover is provided in the enclosed tunnel to surround the container. The reason for enclosing the entire surface is to prevent the internal contents from scattering when the electromagnetic induction superheated steam is ejected to the container and to improve the thermal efficiency.

  The conveyance conveyor is preferably an apron conveyor, and encloses as much as possible so as to enclose the upper surface of the steel apron. If the volume of the enclosure, i.e., the shatterproof cover, is small, the insertion efficiency of superheated steam can be improved, and even if steaming is performed in the presence of air, problems such as combustion and explosion do not occur.

The apron conveyor tunnel entrance is provided with a vertically movable gate, and a crusher for crushing the pail can on the tunnel exit side is connected to a hood to prevent the crushed material from being scattered during crushing, thereby interrupting the exchange with the outside air. is there.
When the pail can is put on the apron and sent into the tunnel, the gate closes, the anti-scattering cover in the tunnel surrounds the pail can stopped in place, and high temperature steam is blown out from the nozzle provided on the anti-scattering cover wall surface. Pail can be pierced, and high temperature steam is inserted into the pail can to sterilize the inside and the contents, and when the anti-scatter cover is raised at the end of sterilization, the apron moves and a sterilized pail can is placed on the crusher chute Supplied.

  FIG. 1 is a sectional view of an embodiment of the present invention. 2. Apron conveyor. 1. Contained infectious medical waste on an apron board. Place a pail can and connect one end of the apron conveyor. Slide up and down to the entrance side surrounded by a tunnel. Provide a gate.

When the pail can on the apron plate stops at a predetermined position in the tunnel, 10. The shatterproof cover descends and wraps around the pail.
From the top of the anti-scatter cover 5. By blowing high temperature steam at 600 ° C. from the electromagnetic induction heating steam insertion nozzle, the pail can is perforated with the heat of the steam, and high temperature steam is blown into the pail as it is.

7. After the completion of the insertion, raise the anti-scatter cover and move the apron conveyor to move the pail can. Supply to the crusher.
6. Tunnel and crusher upper part. The inside of the crusher hood is heated by the residual steam of the inserted steam, and condensation is prevented by maintaining the room temperature at 80 ° C. or higher.
An exhaust port is provided at the top of the crusher hood to reduce the indoor pressure.
13. Pail cans are crushed. 11. Remove the screen mesh. The crushed material is carried out by a conveyor.

In the embodiment of FIG. 2, a pail can is placed on the apron and transferred into the tunnel according to the method of the first embodiment, and the tunnel entrance gate is closed.
Also served as a guide on both sides of the apron. 15. Stop the skirt and pail. 15. Enclose the front with a front stopper and cover. 16. An insertion port for pushing the pail can from the back with the rear cover to surround the four sides and inserting hot steam from the electromagnetic induction superheated steam generator; The ceiling canopy is lowered to surround the pail can, and high temperature steam is inserted into the pail can in the same manner as in the first embodiment.

It is explanatory drawing (sectional drawing) which showed the implementation method of the infectious medical waste sterilizer. Example 1 It is explanatory drawing (sectional drawing) which showed the pail can enclosure method of the infectious medical waste sterilizer. (Example 2)

1 Infectious medical waste container (pail can)
2 Apron conveyor 3 Apron 4 Tunnel 5 Electromagnetic induction superheated steam insertion nozzle 6 Electromagnetic induction superheated steam generator 7 Crusher hood 8 Pail can crusher 9 Saturated steam 10 Spatter prevention cover 11 Crushing material conveyor 12 Entrance gate 13 Screen 14 Left and right Skirt 15 Stopper front cover 16 Back cover 17 Ceiling shroud

Claims (2)

  The upper and lower sides and the left and right sides of the end of the conveyor are surrounded by a tunnel, the gate and the ceiling of the tunnel are further raised at the entrance to the tunnel, A spray nozzle for high-temperature steam from the electromagnetic induction superheated steam generator is installed from the wall, and the cover can be moved up and down and stored in the pocket of the tunnel, so that one end of the box can abut on the conveyor conveyor steel apron during sterilization As an infectious medical waste sterilizer that has a timely jet and stop function of high-temperature steam, and consists of a conveyor that surrounds the conveyor, tunnel and treatment, a spray nozzle, a crusher, a hood surrounding the crusher, and a carry-out conveyor.   The apron of the sterilizer and a means for transferring the processing material placed on the apron, one end of the apron are surrounded by four guide plates on the left and right sides of the tunnel, a stop plate on the crusher side, and a press plate on the tunnel entrance side, The infectious medical waste sterilizer according to claim 1, wherein the infectious medical waste sterilizer is configured with a pressing plate from the upper surface and provided with an injection nozzle from the wall surface.

Images