KR20220048579A - High Temperature High Pressure Oil Injection Handpiece Sterilization Device - Google Patents

Abstract

The present invention relates to a high-pressure cleaning device for disinfecting medical devices using cleaning/disinfecting water and, more specifically, to a high-pressure cleaning device for effectively cleaning/disinfecting medical devices, such as contaminated handpieces and the like, using cleaning/disinfecting water, which cleans/disinfects the inside and outside of handpieces contaminated with disease-causing factors such as a patient's saliva, blood, and tooth fragments and powder after dental treatment, various pathogenic microorganisms, and the like. According to the present invention, the high-pressure cleaning device comprises: a cleaning/disinfecting agent supply unit (110) supplying cleaning/disinfecting agent; a water supply unit (120) supplying a medium mixed with the cleaning/disinfecting agent; a cleaning/disinfecting water storage unit (150) accommodating cleaning/disinfecting water mixed with the cleaning/disinfecting agent and the medium and including a valve (151) controlling discharge of the cleaning/disinfecting water; an air supply unit (130) including a discharge line (131) into which cleaning/disinfecting water flows and forcibly moving air along the discharge line (131) at high pressure and high speed; and a mounting unit (140) including a fixed pipe (141) connected to the discharge line (131) to discharge the cleaning/disinfecting water mixed with the air, a valve (142) controlling opening and closing of the fixed pipe (141), and a fixing means (143) detachably fixing a medical device to be cleaned/disinfected to the fixed pipe (141).

Description

High Temperature High Pressure Oil Injection Handpiece Sterilization Device

The present invention relates to a high-pressure cleaning device for disinfecting medical devices using cleaning/disinfecting water, and more particularly, a handpiece contaminated with disease-causing factors such as saliva, blood, tooth fragments and powder of a patient after dental treatment, and various pathogenic microorganisms. It relates to a high-pressure cleaning device for disinfection that can effectively wash/disinfect medical devices such as handpieces contaminated with cleaning/disinfecting water in cleaning/disinfecting the inside and outside of the device.

A dental handpiece is a dental medical device that polishes and removes infected or damaged teeth, and is contaminated with saliva, blood, tooth fragments and powder, as well as various pathogenic microorganisms and viruses, etc., in the oral cavity of a patient during use. In general, since contaminants of handpieces such as saliva and blood may include various disease-causing factors such as AIDS or hepatitis, the contaminated handpiece may cause fatal transmission to doctors and nurses who use them.

In addition, since the handpiece is not a disposable medical device, the used handpiece must go through processes such as washing, disinfection and sterilization to prevent transmission to the next patient.

A conventional method of cleaning/disinfecting medical devices such as used handpieces is to boil the medical devices in boiling water or use a high-temperature and high-pressure autoclave. However, this conventional method washes/disinfects one medical device

There was a fatal disadvantage that it takes too much time to do it. Considering the large number of patients visiting the dentist, the patient's waiting time for treatment is prolonged, and the quality of medical service experienced by the patient is inevitably reduced. It may not be possible, and the transmission of various disease-causing factors may result. In addition, in the case of the handpiece, the above-mentioned problem was prominent because the frequency of use of the handpiece was high among dental medical devices.

Of course, it is possible to solve the above-described problem by sufficiently securing medical devices such as handpieces, but it is difficult to realistically hold a large number of handpieces as handpieces as expensive medical devices.

In addition, the conventional washing/disinfection method using high temperature and high pressure can damage medical devices such as the handpiece and decrease the function, and even when various disease-inducing factors are inactivated through high temperature and high pressure, they remain inside the handpiece and cause other patients Because it can help the growth of pathogenic microorganisms by being transferred to the skin, there is an urgent need for an effective cleaning/disinfection method for medical devices such as handpieces.

Recently, a cleaning/disinfecting method using ultraviolet rays and ultrasonic waves has been proposed in response to these demands. However, in the case of UV light, only the portion irradiated with UV light was washed/disinfected, so the inside of the handpiece was not cleaned/disinfected at all.

Accordingly, the present invention has been devised to solve the above problems, and it improves the cleaning/disinfection of medical devices such as handpieces in time and quality, and simultaneously cleans/disinfects medical devices such as multiple handpieces quickly and effectively. It is a technical task to provide a high-pressure washing device for sterilizing medical devices using sterilizable washing/disinfecting water.

The present invention in order to achieve the above technical problem,

a cleaning/disinfectant supply unit for supplying a cleaning/disinfectant;

a water supply unit for supplying a medium to be mixed with the washing/disinfectant;

a washing/disinfecting water storage unit having a valve 151 for accommodating the washing/disinfecting water in which the washing/disinfecting agent and the medium are mixed, and controlling the discharge of the washing/disinfecting water;

an air supply unit having a discharge line through which washing/disinfecting water is introduced, and forcibly moving air at high pressure and high speed along the discharge line; and

A mounting part having a fixed tube connected to the discharge line through which washing/disinfecting water mixed with air is discharged, a valve for controlling the opening and closing of the fixed tube, and a fixing means for detachably fixing the medical device to be cleaned/disinfected with the fixed tube; includes; It is a high-pressure cleaning device for sterilizing medical devices.

According to the present invention, it is possible to efficiently clean/disinfect medical devices such as handpieces contaminated with contaminants in the patient's oral cavity or various contaminants in the air in a short time, and to wash/disinfect multiple medical devices at the same time. It also has the advantage of being advantageous for practical use.

1 is a block diagram showing the configuration of a high-pressure cleaning device for disinfection of a dental medical device according to the present invention;
2 is a graph showing the degree of inactivation of microorganisms over time in ozone of 0.2 mg/L in liquid condition.

The high-pressure cleaning device for disinfection of dental medical devices according to the present invention is a dental medical device such as a handpiece (hereinafter referred to as 'handpiece'; however, the high-pressure cleaning device for disinfection according to the present invention is limited to washing/disinfecting handpieces. In order to clean/disinfect the used handpiece, cleaning/disinfecting water containing ozone is sprayed at a high flow rate to perform external cleaning and disinfection along with internal cleaning and disinfection of the handpiece using flushing.

Ozone is a disinfectant and oxidizer widely used in water treatment processes and surface disinfection, pipe network cleaning/disinfection, biofilm control, etc., and is an unstable gas having a pale blue color and odor similar to a foul fishy smell.

In general, ozone is generated using an electric discharge or a UV lamp of 184.9 nm.

In electric discharge, when an alternating voltage is applied between electrodes, an intermittent discharge occurs in space, and accelerated electrons (e-) by the discharge collide with oxygen molecules to become oxygen atoms (O), while the oxygen atoms (O) generated in this way are It reacts with oxygen molecules again to form ozone.

Ozone generation increases as the discharge power increases, oxygen purity, and residence time in the discharge space become longer.

The method of generating ozone using a UV lamp is to use a lamp that emits UV of 184.9 nm wavelength, and uses the principle that UV is generated when oxygen molecules are irradiated with a wavelength of 184.9 nm. This method is safer than electrolysis and has the advantage of not generating secondary pollutants such as nitrogen oxides.

Oxidation and disinfection by ozone can be divided into two reactions: the reaction by ozone itself and the OH radical generated when ozone is decomposed. Both substances have high oxidizing capacity (ozone: 2.07V, OH radical: 2.80V) Because it has, it is effective in the treatment of most chemicals including microorganisms and iron. In particular, in the case of microbial disinfection, unlike UV disinfection, which only inhibits the re-proliferation of microorganisms by damaging DNA, ozone has the characteristic of destroying all of the surface membrane, cell wall, enzyme, DNA, etc. Especially effective.

It is known that when 0.5 mg/L ozone is used, more than 99 to 99.9% of viruses and most bacteria are inactivated within minutes.

According to a recent study by the inventors of the present invention (M. Cho, J. Yoon, J. Applied Microbiology, 2008, 104, PP. 759 ~ 766), in the case of Escherichiacoli, in 4 seconds under the ozone condition of 0.1 mg/L 99% were inactivated. In addition, according to a study by Thurston-Enriquez et al. (J. A. Thurston-Enriquez, Wat. Res., 2005, 39, PP. 3650 ~ 3656), entericadenovirus and feline calicivirus were more than 99.9% in 0.5 min at 0.5 mg/L ozone condition. reported to be inactivated.

By mixing ozone having the above-described generation method and efficacy in washing/disinfecting water, and flushing the handpiece at high pressure and high speed, the high-pressure cleaning device for disinfection according to the present invention can clean dental medical equipment such as a handpiece before the unstable ozone disappears. It can be effectively cleaned/disinfected.

Hereinafter, the present invention will be described in detail based on the accompanying illustrative drawings.

1 is a block diagram illustrating a configuration of a high-pressure cleaning apparatus for disinfection of a dental medical device according to the present invention, which will be described with reference to this.

The high-pressure cleaning device for disinfection according to the present invention includes a handpiece 200, a cleaning/disinfectant supply unit 110 that generates ozone gas for cleaning/disinfection, a water supply unit 120, and a compressor that generates compressed air. It includes a supply unit 130 and a mounting unit 140 for mounting the handpiece 200 to be washed/disinfected, and may further include a washing/disinfecting water storage unit 150 and a waste ozone treatment unit 160 if necessary. there is. In addition, it may further include a chamber 170 for ozone concentration control and waste ozone treatment.

The cleaning/disinfectant supply unit 110 may directly generate ozone or may be supplied from a separate ozone tank. When ozone is directly generated, the cleaning/disinfectant supply unit 110 may directly secure oxygen required for ozone generation in the air, or may receive pure oxygen from a separate oxygen tank.

Ozone generation may be carried out using electric discharge or UV lamp as described above, but the method using the electric discharge method or UV lamp for ozone generation is not limitedly applied.

The water supply unit 120 supplies a medium for washing/disinfecting the handpiece 200 by mixing it with ozone gas generated from the cleaning/disinfectant supply unit 110 . Here, the medium may be ordinary tap water, distilled water or other liquids separately pretreated. Of course, the medium may be washing water or disinfecting water widely known for washing/disinfecting the handpiece.

The air supply unit 130 discharges air at high pressure and high speed using a compressor, and is mixed with ozone gas and water discharged from the cleaning/disinfectant supply unit 110 and the water supply unit 120, respectively, while ozone gas and water (hereinafter '' Ozone water') proceeds at high pressure and high speed. To this end, the air supply unit 130 has a discharge line 131 communicating with the mounting unit 140 is formed, and the cleaning/disinfectant supply unit 110 and the water supply unit 120 communicate with the discharge line 131 while communicating with the discharge line ( 131), the ozone gas and water flow to the mounting unit 140 at the atmospheric pressure by the high-pressure and high-speed airflow.

The mounting unit 140 supports the ozone water discharged from the discharge line 131 at high pressure and high speed to pass therethrough while detachably fixing the handpiece 200 .

In general, the handpiece 200 is a medical device using the force of compressed air passing through the air supply passage, and the air supply passage is formed to penetrate along the longitudinal direction of the hand piece 200 . By utilizing the structural characteristics of the handpiece 200, the firewood unit 140 of the high-pressure washing apparatus for disinfection according to the present invention fixes the handpiece 200 so that the discharge line 131 and the air supply passage communicate with each other. Of course, the high-pressure cleaning device for disinfection according to the present invention is not limitedly used for cleaning/disinfecting the handpiece 200 .

Subsequently, the mounting unit 140 is formed with a plurality of fixing tubes 141 communicating with the discharge line 131 so as to simultaneously fix the plurality of handpieces 200 . The fixing tube 141 is to be directly connected to the handpiece 200, and will be branched and arranged in parallel to communicate with one discharge line 131 .

A separate hose 300 may be connected to the mounting unit 140 in addition to a medical device such as the handpiece 200 . The hose 300 sprays ozone water to the outside of the medical device fixed to the fixing tube 141 so that the outside of the medical device is cleaned/disinfected. After all, after connecting the handpiece 200 and the hose 300 to the plurality of fixing tubes 141 , when ozone water is supplied to the mounting unit 140 , the high-pressure and high-speed ozone water is supplied to the inside of the handpiece 200 as well as the hose. It is sprayed to the outside through 300 to wash/disinfect both the inside and outside of the handpiece 200 . For reference, since the hose 300 must be able to flexibly control the spraying direction of ozone water according to the shape and location of the medical device fixed to the mounting part 140 , the hose 300 has flexibility that can have a flexible property. It is preferable that it is a material.

On the other hand, when the mounting unit 140 includes a plurality of fixed tubes 141 , a valve 142 is formed for each fixed tube 141 to selectively use the fixed tube 141 , and a handpiece 200 and a hose 300 are formed. ) is provided with a fixing means 143 for attaching and detaching the object to be cleaned/disinfected.

The high-pressure washing apparatus for disinfection according to the present invention may further include a washing/disinfecting water storage unit 150 . The washing/disinfecting water storage unit 150 is a container for storing ozone water mixed with ozone and water supplied from the washing/disinfectant supply unit 110 and the water supply unit 120, respectively, as washing/disinfecting water, and improving the mixing efficiency of ozone and water can do. To this end, the cleaning/disinfectant supply unit 110 and the water supply unit 120 may include valves for regulating the supply amounts of ozone and water, respectively.

The washing/disinfecting water storage unit 150 is preferably made of a material such as plastic, glass, or stainless steel having excellent oxidation resistance, and may include a valve for controlling the amount of flow into the discharge line 131 .

Subsequently, the high-pressure washing apparatus for disinfection according to the present invention may further include a waste ozone treatment unit 160 . The waste ozone treatment unit 160 is in communication with the washing/disinfecting water storage unit 150, collecting ozone that is not dissolved in water and disposing of it. On the other hand, a chamber 170 for collecting undissolved waste ozone from the washing/disinfecting water storage unit 150 and ozone water after washing/disinfecting the handpiece and guiding the collected waste ozone to the waste ozone treatment unit 160 is further added. may include

On the other hand, the chamber 170 is provided with an intake fan 171 capable of intake when the concentration of ozone generated in the high-pressure cleaning device for disinfection exceeds the reference value.

The high-pressure cleaning device for disinfection according to the present invention including the above-described configuration washes/disinfects the handpiece by discharging ozone water at high pressure and high speed, and when a predetermined disinfection time elapses, the supply of ozone from the cleaning/disinfectant supply unit 110 is stopped. After stopping, only water from the water supply unit 120 or air from the air supply unit 130 is sprayed onto the handpiece through the mounting unit 140 to cleanly remove ozone remaining in the handpiece.

In the high-pressure washing apparatus for disinfection according to the present invention, a valve 151 for controlling the discharge of washing/disinfecting water from the washing/disinfecting water storage unit 150 is configured so that only air is delivered to the mounting unit 140 .

2 is a graph showing the degree of inactivation of microorganisms according to time in ozone of 0.2 mg/L in liquid condition, which will be described with reference to this.

A disinfection experiment on microorganisms according to ozone concentration was performed using the above-described high-pressure cleaning device for disinfection.

The experiment was performed in a batch method, and the experiment was performed at a relatively low pH of 5.6 for conditions similar to those in the high-pressure washing apparatus for disinfection. The concentration of ozone was measured using the indigo method, and the initial concentration of ozone was adjusted to 0.2 mg/L and the reaction time was set to 30 seconds.

Figure 2 shows the inactivation of E. coli, Staphyploccus aureus, and MS-2 phage by ozone. E. coli and MS-2 phage are representative indicator microorganisms predicting the inactivation of bacteria and viruses in the disinfection process, Staphyploccus aureus is a well-known food poisoning bacterium.

As a result of measuring the inactivation of the three microorganisms shown in FIG. 2, it was possible to confirm the rapid inactivation of the microorganisms despite the low ozone concentration of 0.2 mg/L. That is, it can be seen that more than 99,99% of inactivation occurred within 5 seconds for E. coli, 10 seconds for MS-2 phage, and 15 seconds for Staphyploccus aureus. Of course, the inactivation of microorganisms can vary depending on the degree of contamination inside the handpiece, and when a biofilm is formed or when microorganisms are attached to the surface, a slower inactivation of microorganisms can be predicted.

However, these experimental results mean that the method of sterilizing the dental handpiece 200 using ozone is sufficiently effective. In the case of strong spores or protozoa microorganisms such as Bacillus spores (anthrax, etc.) or Cryptosporidium, they have a much greater resistance to disinfectants than the microorganisms above, but in this case, it can be treated by increasing the ozone concentration or washing/disinfection time. there is. However, these microorganisms are mostly independent of dental contamination.

In general, when ozone is used, bromine-based disinfection by-products harmful to the human body, such as bromate, may be generated. Remove ozone and disinfection by-products.

In addition, since the concentration of ozone is low, metal damage inside and outside the handpiece 200 hardly occurs.

The high-pressure washing apparatus for disinfection according to an embodiment of the present invention can control the cleaning/disinfection efficiency by adjusting the concentration of ozone, the cleaning time, the flow rate, and the like.

On the other hand, the high-pressure washing apparatus for disinfection according to the present invention is not limited to the disinfection method using ozone, and it is obvious that the same effect can be achieved by using another disinfectant that can replace ozone. For example, the cleaning/disinfectant supply unit 110 may generate/supply chlorine dioxide instead of ozone. In addition, generation/supply of chlorine-based disinfectants (free chlorine, chloramine, etc.) or hydrogen peroxide (H2O2) is possible, and it is possible to replace the high-concentration reagent with other disinfecting properties or to replace the washing/disinfecting water storage unit 150 itself with the washing water containing the disinfectant. It is also possible to substitute

Accordingly, the cleaning/disinfectant supply unit 110 is not limited to supplying ozone as in the above-described embodiment.

On the other hand, in the same way as disinfecting and cleaning the outside of the handpiece with ozone water, it will be possible to disinfect and clean the endodontic file as well as other small instruments for dental treatment.

Claims (1)

a cleaning/disinfectant supply unit 110 for supplying a cleaning/disinfectant;
a water supply unit 120 for supplying a medium to be mixed with the washing/disinfectant;
a washing/disinfecting water storage unit 150 having a valve 151 for accommodating the washing/disinfecting water in which the washing/disinfecting agent and the medium are mixed, and controlling the discharge of the washing/disinfecting water;
an air supply unit 130 having a discharge line 131 through which washing/disinfecting water is introduced, and forcibly moving air at high pressure and high speed along the discharge line 131;
A fixed tube 141 that is connected to the discharge line 131 to discharge washing/disinfecting water mixed with air, a valve 142 for controlling the opening and closing of the fixed tube 141, and a fixed tube 141 for a medical device to be cleaned/disinfected and a fixing means 143 for detachably fixing, the fixing pipe 141 is a plurality of branched and connected in parallel with the discharge line 131, and the valve 142 controls the opening and closing of each of the fixing pipes 141 a mounting unit 140 configured to do so;
a chamber 170 having an intake fan 171 that collects the ozone discharged through the washing/disinfecting water storage unit 150 and the fixed pipe 141 and forcibly intakes the ozone discharged through the fixed pipe 141; and
a waste ozone treatment unit 160 that discards the ozone collected in the chamber 170;
A high-pressure cleaning device for disinfection of medical devices, characterized in that it comprises a.

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