Chemical apparatus and process disinfecting – deodorizing – preser – Physical type apparatus – Apparatus for treating solid article or material with fluid...
Patent
1997-11-26
1999-10-05
Warden, Robert
Chemical apparatus and process disinfecting, deodorizing, preser
Physical type apparatus
Apparatus for treating solid article or material with fluid...
422292, 422297, 1341042, 134170, A61L 218
Patent
active
059619376
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention concerns a universal device for the thorough--i.e. external and internal--cleaning and disinfecting of dental, surgical and veterinary instruments and for other uses such as dental instruments, scalpels, probes, endoscopes, mirrors, forceps, etc. both in their assembled form and stripped down to their individual components. This device completely removes viral contamination which can be easily transmitted.
BACKGROUND OF THE INVENTION
Similar equipment already exists, e.g. that described in European patent No. 56 791 or U.S. Pat. No. 4,552,163, being the property of the applicant. With these devices, the instrument to be disinfected is placed vertically into a cylindrical chamber and jets of water and/or disinfectant mixed with air, are directed towards the vertical axis of the chamber and strike specific points of the front of the instrument. After striking the instrument, the jets rebound towards the walls of the chamber where gravity causes them to fall downwards. Consequently, there are a number of areas which are not sprayed or only partially sprayed by said liquids, thereby leaving an unwanted bacterial residue. This is particularly true in the lower part of the chamber where, in the case of dental instruments for example, there are usually areas which are more contaminated by germs. This is an unwanted and worrying problem.
SUMMARY OF THE INVENTION
The inventor of this device has overcome this problem by modifying the shape of the chamber and varying the direction and intensity of the jets ensuring that the disinfectant is sprayed over the entire surface area of the instrument being treated, with greater and more effective action being exerted on the lower parts of the instrument which, as has been said, are the most contaminated areas.
More specifically, this invention is a universal device designated to clean and sterilize both internally and externally, dental, surgical, veterinary and other types of instruments. It consists of a chamber with an internal and an external wall, separated by a hollow space, with holes on the internal wall through which fluids/liquids and/or air are sprayed in a pre-set sequence on to the instrument placed vertically in the chamber. The hollow space between the two walls is subdivided along the axis of the chamber into several smaller chambers along which is a ring of spray holes inclined at a specific downward angle moving off-centre at a predetermined distance from the vertical axis of the chamber. The shape of the chamber and the pressure upstream of the holes and/or their diameter and direction causes the jets to move in a helicoidal manner, with the speed and kinetic energy increasing from the upper to the lower part of the chamber.
According to one of the embodiments, said chamber has a downward tapering frusto-conical shape.
Two variations of the device have been constructed: one which does not require the dismantling of the instruments to be treated, the other requiring it to be stripped down to its various component parts with each component being treated separately.
The importance of this newly invented device is its ability to thoroughly clean, disinfect and sterilize an item of dental equipment for example, whilst the patient is being treated, i.e. whilst the work is being carried out, because the instrument is washed, disinfected, sterilized and lubricated externally and internally without having to remove it or disconnect it from the electric or pneumatic cable and from the water cooling pipe. Inside the cylinder, the instrument is activated at the time of the disinfecting and sterilizing process to remove the pathogens from the internal ducts of same and when it is switched off, the disinfecting and sterilizing liquid is aspirated in the same manner as the contaminated part. In this way, when the disinfecting and sterilizating substance enters the chamber of the device, the same sterilization process is repeated at least two or three times in the patient's mouth i.e.: when the instrument is switched on and of
REFERENCES:
patent: 4552163 (1985-11-01), Biancalana et al.
patent: 4914584 (1990-04-01), Gibson
patent: 5265628 (1993-11-01), Sage et al.
Bitiess Microtecnica S.A.
Moazzam Fariborz
Warden Robert
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