Apparatus for organizing, sterilizing, and maintaining medical/dental instruments

• US 4,541,992 A
• Filed: 08/10/1983
• Issued: 09/17/1985
• Est. Priority Date: 08/10/1983
• Status: Expired due to Term

• Current Assignee: Hu-Friedy Mfg Company LLC (Steris PLC)
• Original Assignee: Hu-Friedy Mfg Company LLC (Steris PLC)
• Inventors: Zoll, Karl, Jerge, Charles R., Frankel, Bruce
• Primary Examiner(s): Adee, John
• Application Number:
  US06/522,451
• Time in Patent Office: 769 Days
• Field of Search: 422/299, 422/300, 422/302, 422/310
• US Class Current: 422/300
• CPC Class Codes: A61B 50/31 Carrying cases or bags, e.g. doctors' bags
• CPC Class Codes: A61B 50/33 Trays
• CPC Class Codes: A61C 19/02 Protective casings, e.g. boxes for instruments; Bags A61C5/44 takes precedence
• CPC Class Codes: A61L 2/26 Accessories or devices or components used for biocidal treatment

Abstract

A sterilizable, stackable medical/dental instrument casette is formed of sterilization heat resistant plastic. A cover of the casette is closable, openable and separable from a tray of the casette. The tray is stackable on the cover, or other identical casette covers. Flexible, movable rails define compartments within the casette, and support and separate instruments in the casette. The cover is securely latchable to the tray.

Claims

1. A sterilizable instrument cassette for repeatedly cycling through a process of use and sterilization, and in which instruments are removably and replaceably kept, comprising:

a tray formed of sterilization heat resistant plastic perforated with a plurality of sterilization openings;

a cover formed of sterilization heat resistant plastic perforated with a plurality of sterilization openings;

means on the tray and cover joining the cover to the tray, the cover and tray thereby being movable relative to each other to and from open and closed positions, the joining means being formed of sterilization heat resistant plastic;

instrument compartment rails fastened to the cover and the tray at corresponding locations, thereby defining instrument compartments within the cassette, when closed, the compartment rails being formed of sterilization heat resistant plastic; and

instrument locating and retaining rails fastened within said cassette interior and within the instrument compartments, the locating and retaining rails including thereon spaced instrument holders adapted to releasably hold instruments in spaced relation to each other and the tray and the cover within the instrument compartments, the locating and retaining rails being formed of sterilization heat resistant plastic.

2. A medical/dental instrument casette as in claim 1 in which the tray, cover, latch means, instrument retaining means and stacking means are formed of polysulfone.

3. A medical/dental instrument casette as in claim 1 in which the instrument retaining means is adaptable for releasably retaining dental instruments in a plurality of fixed arrangements.

4. A medical/dental instrument casette as in claim 1 in which the instrument retaining means is removeable from the casette.

5. A medical/dental instrument casette as in claim 1 in which the stacking means comprises protuberances on the tray and corresponding recesses on the cover.

6. An instrument cassette as in claim 1, further comprising:

latch means releasably latching the cover to the tray in the closed position, the latch means being formed of sterilization heat resistant plastic.

7. A sterilizable, stackable, medical/dental instrument casette for repeatedly cycling through a process of use and sterilization in which instruments are placed and kept in fixed arrangements in casettes, and in which instruments are removed from casettes only for use, repair or replacement of the instruments, the casette being adaptable to a plurality of pre-selected, fixed arrangements of instruments in casettes, comprising:

a rectangular tray having a bottom and four tray sidewalls defining a tray interior and a tray exterior, the bottom and tray sidewalls being formed of sterilization heat resistant plastic, perforated substantially completely with a plurality of sterilization openings from the tray exterior to the tray interior;

a rectangular cover having a top and four cover sidewalls defining a cover interior and a cover exterior, the top and cover sidewalls being formed of sterilization heat resistant plastic, perforated substantially completely with a plurality of sterilization openings from the cover exterior to the cover interior;

hinges on a first tray sidewall and a first cover sidewall releasably, hingeably joining the first cover sidewall to the first tray sidewall and thereby the cover to the tray, the cover and tray thereby being hingedly movable relative to each other about the hinges to and from open and closed positions and being separable from each other when the top of the cover and the bottom of the tray are substantially perpendicular, the hinges being formed of sterilization heat resistant plastic;

a latch on a second tray sidewall opposite the first tray sidewall and on a second cover sidewall opposite the first cover sidewall, the latch releasably latching the second cover sidewall to the second tray sidewall and thereby the cover to the tray in the closed position, the latch being formed of sterilization heat resistant plastic;

instrument compartment rails removably fastened to the cover sidewalls within the cover interior and the tray sidewalls within the tray interior, at corresponding locations, the compartment rails thereby defining instrument compartments as preferred within the casette, when closed, the compartment rails being formed of sterilization heat resistant plastic;

instrument locating and retaining rails removably fastened to the cover sidewalls within the cover interior and the tray sidewalls within the tray interior, and within the instrument compartments, the locating and retaining rails including thereon spaced instrument holders adapted to snugly, releasably locate and hold, as preferred, instruments in spaced relation to each other from the tray exterior and the cover exterior within the instrument compartments, the locating and retaining rails being formed of sterilization heat resistant plastic;

stacking feet protruding from the tray bottom being formed of sterilization heat resistant plastic; and

stacking feet receptors recessed in the cover top corresponding to the stacking feet, the receptors being formed of sterilization heat resistant plastic.

8. A medical/dental instrument casette as in claim 7 in which the first cover sidewall and the first tray sidewall are substantially co-planar in the closed position to define a back surface for stable, upright placement of the casette, and in which the hinges are recessed toward the tray interior and the cover interior away from the back surface, in the closed position.

9. A medical/dental instrument casette as in claim 7 in which the second cover sidewall and second tray sidewall are substantially co-planar to define a front surface for stable, upright placement of the casette, and in which the latch is recessed toward the tray interior and the cover interior away from the front surface, in the closed position.

10. A sterilizable, medical/dental instrument cassette for repeatedly cycling through a process of use and sterilization in which instruments are placed and kept in fixed arrangements in cassettes, and in which instruments are removed from cassettes only for use, repair or replacement of the instruments, the cassette being adaptable to pre-selected, fixed arrangements of instruments in cassettes, comprising:

a substantially rectangular tray having a bottom and four tray sidewalls defining a tray interior and a tray exterior, the bottom and tray sidewalls being formed of sterilization heat resistant plastic, perforated with a plurality of sterilization openings from the tray exterior to the tray interior;

a substantially rectangular cover having a top and four cover sidewalls defining a cover interior and a cover exterior, the top and cover sidewalls being formed of sterilization heat resistant plastic, perforated with a plurality of sterilization openings from the cover exterior to the cover interior;

hinges on a first tray sidewall and a first cover sidewall releasably, hingeably joining the first cover sidewall to the first tray sidewall and thereby the cover to the tray, the cover and tray thereby being hingedly movable relative to each other about the hinges to and from open and closed positions and being separable from each other, the hinges being formed of sterilization heat resistant plastic;

at least a latch on a second tray sidewall opposite the first tray sidewall and on a second cover sidewall opposite the first cover sidewall, the latch releasably latching the second cover sidewall to the second tray sidewall and thereby the cover to the tray in the closed position, the latch being formed of sterilization heat resistant plastic;

instrument compartment rails fastened to the cover sidewalls within the cover interior and the tray sidewalls within the tray interior, at corresponding locations, the compartment rails thereby defining instrument compartments as preferred within the cassette, when closed, the compartment rails being formed of sterilization heat resistant plastic; and

instrument locating and retaining rails fastened to the cover sidewalls within the cover interior and the tray sidewalls within the tray interior, and within the instrument compartments, the locating and retaining rails including thereon spaced instrument holders adapted to snugly, releasably locate and hold, as preferred, instruments in spaced relation to each other and the tray exterior and the cover exterior within the instrument compartments, the locating and retaining rails being formed of sterilization heat resistant plastic.

11. A sterilizable instrument cassette for repeatedly cycling through a process of use and sterilization, and in which instruments are removably and replaceably kept, comprising:

a tray formed of sterilization heat resistant plastic perforated with a plurality of sterilization openings;

a cover formed of sterilization heat resistant plastic perforated with a plurality of sterilization openings;

means on the tray and cover joining the cover to the tray to define a cassette interior, the cover and tray thereby being movable relative to each other to and from open and closed positions, the joining means being formed of sterilization heat resistant plastic;

instrument compartment rails fastened within said cassette interior, thereby defining instrument compartments within the cassette, the compartment rails being formed of sterilization heat resistant plastic; and

instrument locating and retaining rails fastened to the cover and the tray within the instrument compartments, the locating and retaining rails including thereon spaced instrument holders adapted to releasably hold instruments in spaced relation to each other and the tray and the cover within the instrument compartments, the locating and retaining rails being formed of sterilization heat resistant plastic.