CN118718031A - A device for disinfecting intraoral scanner cameras using ultraviolet light and ozone - Google Patents

Abstract

The invention relates to the technical field of medical disinfection, in particular to equipment for disinfecting an intraoral scanner camera by combining ultraviolet rays and ozone. The light-reflecting light-emitting device comprises a mounting base, wherein a hard shell is fixedly connected to the surface of the mounting base, a reinforcing framework consistent with the central line of the hard shell is mounted on the inner side of the hard shell, a light-reflecting lining is arranged on the inner side of the reinforcing framework, an elastic cloth is arranged at one end of the light-reflecting lining, and an elastic ring is fixedly connected to the upper end of the elastic cloth. According to the device for disinfecting the camera of the intraoral scanner by ultraviolet rays and ozone, through the ozone disinfection arrangement generated by ultraviolet rays and ultraviolet rays, the camera is prevented from being contacted with liquid after being placed into the device, the whole process is in a drier environment, the soaking and wiping of a camera sleeve are avoided, the damage to glass at the camera is avoided, and the die taking precision is not affected; and the whole process is simpler to operate, only the relative tightness of the device is ensured, and the disinfection process is more convenient.

Description

A device for disinfecting intraoral scanner cameras using ultraviolet light and ozone

Technical Field

The invention relates to the technical field of medical disinfection, and in particular to a device for disinfecting an intraoral scanner camera using ultraviolet rays combined with ozone.

Background Art

The traditional method of oral impression taking is intraoral silicone rubber impression taking. The patient needs to open his mouth wide for a long time, which can easily cause a strong foreign body sensation in the mouth, nausea, retching and other discomforts. In addition, the subsequent design and processing of dentures and the restoration of the entire tooth often take two weeks or even longer to complete. Intraoral scanning technology allows doctors to quickly obtain a three-dimensional digital model of the patient's mouth. The model data is more accurate, which reduces the waiting time for patients and doctors, greatly improves the efficiency of diagnosis and treatment, and significantly improves patient comfort.

However, after each intraoral scan, the camera needs to be disinfected. The traditional disinfection method uses o-phthalaldehyde disinfectant to disinfect, which takes at least twelve minutes. After taking it out, it also needs to be wiped with a lint-free cloth, which takes a long time and reduces clinical efficiency. At the same time, there is a risk of liquid flowing into the endoscope during the soaking process, which is difficult to clean and causes water stains. In addition, the lens of the camera is easily scratched during the wiping process, affecting the accuracy of the mold. In order to ensure the quality of the mold, a new sleeve needs to be replaced. Taking the CEREC Omnicam true color scanner as an example, the price of a sleeve is about RMB 20,000, which greatly increases the clinical cost.

Summary of the invention

1. Technical issues to be solved

In view of the shortcomings of the prior art, the present invention provides a device for disinfecting the camera of an intraoral scanner with ultraviolet light and ozone, which solves the problems mentioned in the above background technology, such as the long time consumption; the residual water stains during the soaking process are difficult to clean; and the lens of the camera is easily scratched during the wiping process, affecting the imaging quality.

(II) Technical solution

To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for disinfecting the intraoral scanner camera using ultraviolet light and ozone. It includes a mounting base, the surface of the mounting base is fixedly connected to a hard shell, the inner side of the hard shell is installed with a reinforcing frame consistent with its center line, the inner side of the reinforcing frame is provided with a reflective lining, one end of the reflective lining is provided with an elastic cloth, the upper end of the elastic cloth is fixedly connected to an elastic ring, the inner side of the elastic ring is fixedly connected to a pad, and the lower end of the elastic cloth is fixedly connected to an anti-slip ring. An ultraviolet lamp is installed at the upper end of the mounting base, and a power cord is installed at the lower end of the mounting base. A conical disk is fixedly connected to the lower end of the reinforcing frame, and a reflective plate is provided on the inner side of the conical disk.

Optionally, the reinforcing frame is made of plastic, specifically polyphenylene sulfide.

Optionally, the length of the reinforcing skeleton is 160±20 mm and the inner diameter is 80±20 mm.

1 Sterilization effect experiment

1.1 Purpose of the experiment

The sterilization effect of the device on single bacteria was investigated.

1.2 Selection of test strains

1.3 Experimental steps

(1) Resuscitate each of the above bacteria in the corresponding plates. Incubate Escherichia coli, Staphylococcus aureus, and Candida albicans at 37° C. for 18-24 hours. Incubate Streptococcus mutans in an incubator containing 5% carbon dioxide for 24-36 hours.

(2) taking a single colony after recovery culture, inoculating it on a solid plate, and incubating it under specific culture conditions for subsequent experiments;

(3) Using a turbidimeter, adjust the bacterial suspension for the experiment to 10 ³ cfu/mL, and evenly spread 100 ul on a 6 cm plate containing culture medium;

(4) Place the bacterial plate in the instrument and irradiate for 5, 10, 15, 30, and 60 min, then take it out and place it in a 37°C incubator, and use a counter to record the number of bacteria in the plate;

(5) According to the experimental results of step (4), adjust the irradiation time and examine the bactericidal effect of different concentrations and different times. With the help of a turbidimeter, adjust the bacterial suspension used in the experiment to a concentration of 10 ⁵ , 10 ⁴ , 10 ³ , and 10 ² cfu/mL, and take 100ul and evenly spread it on a 6 cm plate containing culture medium;

(6) Place the bacterial plate under the device and irradiate for 30 seconds, 1 minute, 2 minutes, 3 minutes, and 5 minutes respectively, then take it out and place it in a 37°C incubator for 24-48 hours, and use a colony counter to record the number of bacteria in the plate;

(7) The experiment set up a blank control (sterile inoculation, non-irradiated plate) and a negative control (bacterial inoculation, but non-irradiated plate).

1.4 Test results and analysis

(1) Preliminary investigation of the killing effect of the device on different bacteria at the same inoculation concentration

Table 1 Bactericidal effect of different irradiation times on common bacteria

Note: 1. The value is the number of bacteria in the plate counted three times in parallel;

2. The initial inoculated bacterial count was controlled at 10 ² cfu/dish.

As can be seen from Table 1, the device has a very significant killing effect on the test bacteria when the irradiation time is 5 minutes. However, when the irradiation time is ≤5 minutes, the sterilization effect of the device needs further testing.

(2) Further study the killing effect of the device on different bacteria with different bacterial counts

Table 2-1 Effect of the device on Staphylococcus aureus

Table 2-2 Effect of the device on Escherichia coli

Table 2-3 Effect of the device on Candida albicans

Table 2-4 Effect of the device on Streptococcus mutans

Note: **** indicates that the bacterial count is too large (the bacterial count per dish is greater than 10 ³ CFU) and cannot be counted.

The above results show that the device has a killing effect on different bacteria after irradiation for 30 seconds. When the irradiation time is increased to 2 minutes or 3 minutes, it has a very significant sterilization effect. When the irradiation time is increased to 5 minutes, it can kill more than 99% of the bacteria.

1.5 Conclusion

This study proves that for bacteria or fungi with a bacterial count of 10 ⁴ cfu/dish, an irradiation time of 5 minutes can achieve a killing effect close to 100%; for bacteria or fungi with a bacterial count of 10 ³ cfu/dish, an irradiation time of 3 minutes can achieve a complete sterilization effect; for clinical applications, the order of magnitude of the bacteria is generally 2, so a minimum irradiation time of 3 minutes can be selected as the action time of the sterilization device.

(III) Beneficial effects

The present invention provides a device for disinfecting an intraoral scanner camera by combining ultraviolet light with ozone, which has the following beneficial effects:

1. Short disinfection time and good effect. Through preliminary experiments, it was found that the device achieved a sterilization rate of more than 95% for the four test single bacteria when irradiated for 3 minutes. Short disinfection time can improve clinical efficiency.

2. Ultraviolet rays and ozone are both green and pollution-free substances, with no chemical residue and will not cause environmental pollution.

3. Through diffusion effect, dead-angle disinfection is achieved without damaging the glass coating of the sleeve, thus extending the service life and reducing clinical costs.

4. The operation process is simple, which reduces the workload of technicians and allows them to spend more time on intraoral impression taking and restoration making.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the present invention;

FIG2 is a schematic diagram of the split structure of the present invention;

FIG. 3 is a schematic diagram of the hard shell structure of the present invention.

In the figure: 1. Mounting base; 2. Hard shell; 3. Reinforced frame; 4. Reflective lining; 5. Elastic cloth; 6. Elastic ring; 7. Pad; 8. Anti-slip ring; 9. UV lamp; 10. Power cord; 11. Conical disk; 12. Reflector.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1 to 3. The present invention provides a technical solution: an ultraviolet combined with ozone disinfection device for intraoral scanner camera, comprising a mounting base 1, a hard shell 2 is fixedly connected to the surface of the mounting base 1, a reinforcing frame 3 consistent with its center line is installed on the inner side of the hard shell 2, a reflective lining 4 is arranged on the inner side of the reinforcing frame 3, an elastic cloth 5 is arranged on one end of the reflective lining 4, an elastic ring 6 is fixedly connected to the upper end of the elastic cloth 5, a pad 7 is fixedly connected to the inner side of the elastic ring 6, an anti-slip ring 8 is fixedly connected to the lower end of the elastic cloth 5, an ultraviolet lamp 9 is installed on the upper end of the mounting base 1, and the types of ultraviolet lamps 9 can be divided into 185 nanometers and 254 nanometers according to the wavelength of the light emitted, wherein the 185 nanometer ultraviolet lamp 9 can convert oxygen in the air into ozone after irradiating it, and a A power cord 10 and a conical disk 11 are fixedly connected to the lower end of the reinforcing frame 3, a reflector 12 is arranged on the inner side of the conical disk 11, the reinforcing frame 3 is made of plastic, specifically a polyphenylene sulfide, the length of the reinforcing frame 3 is 160 mm, and the inner diameter is 80 mm. Through the setting of the novel disinfection structure, the camera is not only prevented from contacting with liquid after being placed in the device, but the whole process is in a relatively dry environment, so the wiping of the camera is avoided, the wear of the camera glass is avoided, and the accuracy of the mold is not affected. Moreover, the operation of the whole process is relatively simple, and it is only necessary to ensure that the device is relatively airtight, and the disinfection process is relatively convenient. Moreover, since ultraviolet rays and ozone are used for disinfection, even some dead corners in the camera can be disinfected more thoroughly, which is suitable for the disinfection of cameras of different brands, thereby increasing the applicability of the device.

In the present invention, the working steps of the device are as follows: first, the staff inserts the intraoral scanner camera into the device through the pad 7, and then the staff starts the ultraviolet lamp 9 through the control switch. As the ultraviolet lamp 9 is started, ozone is slowly generated, so that the device can form a closed environment where ozone and ultraviolet rays work together, thereby achieving disinfection of the camera.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. A device for disinfecting an intraoral scanner camera by combining ultraviolet light with ozone, comprising a mounting base (1), characterized in that: a hard shell (2) is fixedly connected to the surface of the mounting base (1), a reinforcing frame (3) consistent with the center line of the hard shell (2) is installed on the inner side of the reinforcing frame (3), a reflective lining (4) is arranged on the inner side of the reinforcing frame (3), an elastic cloth (5) is arranged on one end of the reflective lining (4), an elastic ring (6) is fixedly connected to the upper end of the elastic cloth (5), a pad (7) is fixedly connected to the inner side of the elastic ring (6), and an anti-slip ring (8) is fixedly connected to the lower end of the elastic cloth (5). 2. According to claim 1, a device for disinfecting an intraoral scanner camera using ultraviolet light and ozone is characterized in that: the mounting base (1) is equipped with a low-pressure mercury vapor lamp type ultraviolet lamp (9), and the lower end of the mounting base (1) is equipped with a power cord and a circuit control system (10) to control the disinfection time. 3. The device for disinfecting an intraoral scanner camera using ultraviolet light and ozone according to claim 1 is characterized in that a conical disk (11) is fixedly connected to the lower end of the reinforcing frame (3), and a reflective plate (12) is arranged on the inner side of the conical disk (11). 4. The device for disinfecting an intraoral scanner camera using ultraviolet light and ozone according to claim 1 is characterized in that the reinforcing frame (3) is made of plastic, specifically polyphenylene sulfide. 5. The device for disinfecting an intraoral scanner camera using ultraviolet light and ozone according to claim 1 is characterized in that the length of the reinforcing frame (3) is 160 mm and the inner diameter is 80 mm.