Special receptacle or package – For a tool – Body treatment
Reexamination Certificate
2002-02-27
2003-09-23
Mohandesi, J. (Department: 3728)
Special receptacle or package
For a tool
Body treatment
C206S438000, C206S439000, C220S367100, C220S324000, C220S720000, C220S201000, C422S300000
Reexamination Certificate
active
06622862
ABSTRACT:
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to a sterilization container system and more particularly pertains to safely and conveniently sterilizing medical instruments in an autoclave.
Description of the Prior Art
The use of sterilization systems of known designs and configurations is known in the prior art. More specifically, sterilization systems of known designs and configurations previously devised and utilized for the purpose of sterilizing medical instruments through conventional methods and apparatuses are known to consist basically of familiar, expected, and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which has been developed for the fulfillment of countless objectives and requirements.
By way of example, U.S. Pat. No. 4,748,003 to Riley discloses a container for flash sterilization. U.S. Pat. No. 4,915,913 to Williams et al. discloses a medical sterilizer device with improve latch mechanism. U.S. Pat. No. 5,097,865 to Riley discloses a valved flash sterilization container. U.S. Pat. No. 5,540,901 to Riley discloses a sterilization tray system for surgical instruments. U.S. Pat. No. 5,896,882 to McGrath, Jr. discloses a pressure control valve. Lastly, U.S. Pat. No. 6,048,503 to Riley et al. discloses a sterilization container.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not describe a sterilization container system that allows safely and conveniently sterilizing medical instruments.
In this respect, the sterilization container system according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in doing so provides an apparatus primarily developed for the purpose of safely and conveniently sterilizing medical instruments in an autoclave.
Therefore, it can be appreciated that there exists a continuing need for a new and improved sterilization container system which can be used for safely and conveniently sterilizing medical instruments in an autoclave. In this regard, the present invention substantially fulfills this need.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in sterilization systems of known designs and configurations now present in the prior art, the present invention provides an improved sterilization container system. As such, the general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new and improved sterilization container system and method which has all the advantages of the prior art and none of the disadvantages.
To attain this, the present invention essentially comprises a bottom tray. The bottom tray is formed in a generally rectilinear configuration. The bottom tray has a rectangular horizontal bottom wall and rectangular vertical up-standing walls. The walls terminate in an upper periphery with an open top. In this manner a reception area is formed within the tray for receiving medical instruments to be sterilized. The up-standing walls of the bottom tray include long side walls and short end walls. The end walls include releasable clamps. A lid is provided. The lid is formed in a generally rectilinear configuration. The lid has a rectangular horizontal upper wall and rectangular vertical depending walls. The walls terminate in a lower periphery with an open bottom positionable on the upper periphery of the tray. The depending walls of the lid include long side walls and short end walls. The end walls include reception areas for the releasable clamps to allow locking of the lid to the tray during operation and use. The lid has a large circular aperture through the upper wall. Small attachment apertures are provided through the upper wall adjacent to the large circular aperture. Provided next is a domed support. The domed support is formed with an interior central circular disk and an exterior circular ring. Four ribs are provided in a crossing configuration connecting the ring and the disk. The disk has a central aperture there through. A plurality of small attachment apertures are provided through the ring. The apertures are aligned with the small attachment apertures of the lid. Bolts are provided through the attachment apertures of the lid and ring. Associated nuts couple the upper surface of the ring to the lower surface of the upper wall of the lid. The domed support is fabricated of thick stainless steel to preclude expansion upon the application of sterilization heat. The ribs are bowed upwardly to extend through the large aperture of the lid and above the upper surface of the lid. Also provided is a thin dome shaped plate. The plate has an upper surface in contact with the lower surface of the support. The plate is fabricated of a specialty metal. The specialty metal is selected from the class of specialty metals including a nickel alloy and INVAR. INVAR is a trademark of STE. AME. De Commentry Fourchambault Et Decazeville Corporation and relates to an alloy which is substantially inexpansible. Other combinations of metals may be used, i.e., stainless steel and copper. Stainless steel and INVAR need not be plated to protect against corrosion; however, other combinations may perform better if protected from corrosion. The plate has a central aperture. The periphery of the plate is positionable adjacent to the lower surface of the ring. The plate is adapted to expand upon the application of sterilization heat. In this manner the periphery will move away from the lower surface of the ring. Provided next is an elastomeric seal. The seal is coupled to the lower surface of the ring. The seal has an annular recess. The annular recess is formed in the lower surface of the ring for receiving the seal. The seal has a downwardly extending point for contacting the periphery of the plate. An annular elastomeric gasket is provided next. The gasket is positioned between the ring and the lid. Small attachment apertures are provided in the gasket. The apertures of the gasket are aligned with the attachment apertures of the lid and the ring. Further provided is a U-shaped spring. The spring is also fabricated from a bi-metal. It will be the same material as the disk. The spring is positioned between the disk and the plate. The spring has an upper aperture. The upper aperture is aligned with the aperture of the disk. A bolt is provided there through. An associated nut is also provided. The spring has a lower aperture. The lower aperture is aligned with the aperture of the plate. A bolt is provided there through. An associated nut is further provided. The spring couples the plate to the support. The spring and plate are adapted to expand when heated to between about 135 and 272 degrees Fahrenheit, preferably about 135 degrees Fahrenheit up to a sterilization temperature of about 275 degrees Fahrenheit. In this manner a space is created between the plate and the disk whereby medical instruments within the container may be sterilized. The spring and plate are adapted to close when cooled to about 135 degrees Fahrenheit. Temperatures below 135 degrees Fahrenheit reverse the direction of the spring and disk and create a tighter seal against the seal. In this manner any space between the plate and the disk may be eliminated. Next provided is a pressure equalizing valve in the lid. The valve is provided to relieve pressure from the container while heating or cooling. Lastly, a protective guard is provided. The guard is fabricated of stainless steel and formed in two layers. Each layer is perforated with holes preferably of ⅛ inch diameter with centers staggered at about {fraction (3/16)} inch apart. The holes in the layers are not aligned. The guard is provided to preclude inadvertent manual opening of the valve.
There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood and in order that the present contribution to the art ma
Dutkiewicz Edward P.
Mohandesi J.
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