Sterilization and storage cassette

• US 5,433,929 A
• Filed: 03/10/1994
• Issued: 07/18/1995
• Est. Priority Date: 07/17/1991
• Status: Expired due to Term

• Current Assignee: Hu-Friedy Mfg Company LLC (Steris PLC)
• Original Assignee: Hu-Friedy Manufacturing Co Incorporated
• Inventors: Riihimaki, Roy E., Kudla, James M.
• Primary Examiner(s): Czaja, Donald E.
• Assistant Examiner(s): Cano, Milton I.
• Application Number:
  US08/209,389
• Time in Patent Office: 495 Days
• Field of Search: 422/297, 422/300, 422/310, 422/104, 206/210, 206/263, 206/363, 206/369, 206/370, 206/438, 206/480, 206/483, 206/565, 206/63.5, 220/324, 220/337, 220/338, 220/339, 220/340, 16/222, 16/223, 16/225, 16/227
• US Class Current: 422/297
• CPC Class Codes: A61B 2050/0056 about a lateral axis in the lid plane
• CPC Class Codes: A61B 2050/3009 having means for connecting similar adjacent containers
• CPC Class Codes: A61B 2050/311 Cases
• CPC Class Codes: A61B 50/33 Trays
• CPC Class Codes: A61L 2/06 Hot gas
• CPC Class Codes: A61L 2/26 Accessories or devices or components used for biocidal treatment
• CPC Class Codes: C08L 83/04 Polysiloxanes

Abstract

A sterilization and storage cassette formed of heat-resistant plastic and having two identical tray halves. In one embodiment, at least one tray half includes a rotatable retaining member for retaining dental instruments within the tray. In a second embodiment, a clamping member is inserted in one tray and at least one and preferably a plurality of instrument supports is inserted into the other tray. When the trays are closed together, the clamping member presses down upon and retains dental instruments placed on the supports. The trays are detachably connected through a hinge mechanism. Each tray has separate, distinct hinge members on one of its sides, and a set of separate, distinct latch members on another of its sides.

Claims

1. An instrument sterilization and storage cassette comprising;

first and second substantially identical molded trays, each of said trays being formed of heat resistant plastic, each of said trays defining a plurality of sterilization openings, wherein said trays are connectable to each other to form a bounded sterilization region;

at least one instrument support located within at least one of said trays; and

a rotatable retaining member located within said at least one tray, said retaining member being rotatably connected to opposite sides of said, tray so as to be rotatable about an axis of rotation between an open position and an instrument retaining position.

2. An instrument sterilization and storage cassette in accordance with claim 1 wherein each of said trays contains one of said retaining members and at least one of said instrument supports.

3. An instrument sterilization and storage cassette in accordance with claim 1 wherein each of said trays includes a plurality of said instrument supports.

4. An instrument sterilization and storage cassette in accordance with claim 1 wherein said retaining member is formed in part of steel.

5. An instrument sterilization and storage cassette in accordance with claim 1 wherein each of said trays includes a detent for holding said retaining member in said instrument retaining position.

6. An instrument sterilization and storage cassette in accordance with claim 1 wherein said retaining member includes a clamping member.

7. An instrument sterilization and storage cassette in accordance with claim 1 including a latch mechanism on said cassette for latching said trays together.

8. An instrument sterilization and storage cassette in accordance with claim 7 wherein said latch mechanism includes a slotted receiving member and a rotatable key member that is insertable into said slotted receiving member.

9. An instrument sterilization and storage cassette in accordance with claim 8 wherein each of said trays includes one of said slotted receiving members and one of said rotatable key members.

10. An instrument sterilization and storage cassette in accordance with claim 1 including a hinge connection between said first and second trays.

11. An instrument sterilization and storage cassette in accordance with claim 10 wherein said hinge connection includes an aperture defined on one of said trays and a hinge pintle extending from the other of said trays for insertion into said aperture.

12. A sterilization and storage cassette comprising:

first and second substantially identical trays coupled with each other, wherein said trays are movable relative to one another in a first directions, between first and second positions and wherein at least one of said trays carries a rotatably mounted clamping member, wherein said member is affixed to said respective tray at one or more pivot points and wherein said rotatable clamping member is rotatable relative to its respective tray in a second direction substantially perpendicular to said first direction.

13. A sterilization and storage cassette in accordance with claim 12 which includes a separable hinge connection between said trays.

14. A sterilization and storage cassette in accordance with claim 12 wherein at least one of said trays includes at least one instrument support rail.

15. A sterilization and storage cassette in accordance with claim 14 wherein said instrument support rail is detachable from its respective tray.

16. A sterilization and storage cassette in accordance with claim 12 wherein said rotatable clamping member includes a compressible element.

17. A sterilization and storage cassette in accordance with claim 12 wherein said rotatable clamping member is detachable from its respective tray.

18. A sterilization and storage cassette in accordance with claim 12 wherein said trays each carry a substantially identical latch member for releasably locking said trays to one another.

19. A sterilization and storage cassette in accordance with claim 12 wherein each of said trays defines a plurality of fluid passage openings.

20. A sterilization and storage cassette in accordance with claim 12 wherein each of said trays has a plurality of stacking feet and stacking receptors.

21. A sterilizable instrument cassette comprising:

a pair of molded cassette components including at least one tray;

a hinge to join said tray and said other cassette component together wherein said components are rotatable toward and away from one another about a first axis;

a clamping member; and

a pivotable mounting element rotatably attaching said clamping member to said tray, wherein said clamping member is rotatable about a second axis that extends substantially perpendicular to said first axis.

22. A sterilizable instrument cassette in accordance with claim 21 wherein said other cassette component is formed as a second tray which is substantially identical to said tray, and further comprising:

a second clamping member; and

another pivotable mounting element rotatably attaching said second clamping member to said second tray, wherein said second clamping member is rotatable about another axis that extends substantially perpendicular to said first axis.

23. A sterilizable instrument cassette as in claim 22 wherein each of said trays defines a plurality of fluid passage openings.

24. A cassette in accordance with claim 21 wherein said clamping member is detachable from said tray.

25. A cassette as in claim 21 wherein said clamping member is U-shaped.