Portable sterilization apparatus and method for using the same

Abstract

To provide a new improved portable sterilization device and method for sterilizing medical instruments and devices, storing the sterilized medical instruments and devices in a sterilized state before use, and moving the sterilized medical instruments and devices to a place where medical treatment is performed, which overcomes one or more of conventional inconveniences.SOLUTION: A portable sterilization system includes a sterilization cabinet. The sterilization cabinet comprises a bottom panel, a top panel, two side panels, a back panel, and a door defining an interior chamber, and a plurality of casters or wheels mounted to the bottom panel. The plurality of casters or wheels is each mounted to the bottom panel by a caster bracket or wheel bracket. The caster bracket or wheel bracket comprises a lateral projection.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] (Related Applications) This patent application is filed in accordance with (1) Pending U.S. Provisional Patent Application Serial No. 61 / 950,502, filed March 10, 2014, by PMBS, LLC and Michele Mauzerall et al., for a portable sterilization device and method of use (Attorney Docket No. KEENAN-1PROV); and

[0002] (2) This application claims the benefit of pending U.S. Provisional Patent Application Serial No. 62 / 053,338, filed September 22, 2014, by PMBS, LLC and Michele Mauzerall et al., entitled "Portable Sterilizer and Method of Use Thereof" (Attorney Docket No. KEENAN-2PROV). Both applications are incorporated herein by reference.

[0003] The present invention relates generally to medical instruments and procedures, and more particularly to sterilization devices and procedures for sterilizing medical instruments and / or devices and maintaining their sterility until intended use. [Background technology]

[0004] Many medical procedures require the use of sterile instruments and / or equipment for their performance. Providing sterile instruments and / or equipment for such medical procedures is currently a time-consuming and expensive undertaking, particularly requiring significant manpower and specialized equipment.

[0005] In the past, hospitals (and / or other surgical facilities such as surgery centers) used instrument tray eradicators. A sterile system was used, in which trays containing the instruments and / or equipment needed to perform a given procedure were packaged in specially manufactured disposable packaging. The packaged trays were then autoclaved according to the manufacturer's recommendations. The trays were then removed from the autoclave, cooled, and stored until the contents were needed for the procedure. Additional personnel were required to inspect the packaging prior to use of the instruments and / or equipment to ensure that no damage had occurred that could render the contents non-sterile.

[0006] Portable sterilization cabinets have been introduced to address some of the above-mentioned problems. Figures 1-3 show an exemplary conventional portable sterilization cabinet 5. The sterilization cabinet 5 typically includes a rectangular interior chamber 10 (Figure 2) enclosed by a cabinet bottom 25, cabinet side walls 26, a cabinet back wall 27, and a cabinet top 40. The cabinet 5 may further include one or more doors 30 for selectively opening and closing the interior chamber 10 of the cabinet 5. For example, referring to Figure 2, the cabinet 5 is shown with one door 30 in an open position, and referring to Figure 3, the cabinet 5 is shown with two doors 30 in a closed position. The cabinet 5 may further include a gasket (not shown) at the interface between the door and the frame of the cabinet 5 to seal the cabinet 5 when the door is closed. The interior chamber 10 of the cabinet 5 also preferably includes a shelf 45 for supporting a surgical tray within the chamber 10 .

[0007] The cabinet 5 further includes one or more vents 35 formed in the cabinet top 40 and / or the cabinet bottom 25. The vents 35 are covered by filters 50, and a filter cover 55 holds the filters 50 in a position opposite the vents 35.

[0008] To move the cabinet 5 into an autoclave, or into an operating room, or into a storage room, the cabinet 5 is equipped with wheels 20 mounted directly to the cabinet bottom 25 . In use, medical instruments and / or instrument trays are placed on shelves 45 , which are mounted within the interior chamber 10 of cabinet 5 .

[0009] Alternatively, medical instruments and / or instrument trays may be placed on the shelves 45 after the shelves 45 are loaded into the cabinet 5. The entire cabinet 5 is then wheeled into the autoclave, which is then started. Hot air and steam generated by the autoclave can pass through the vent 35 into the interior chamber 10 of the cabinet 5, thereby sterilizing the cabinet 5 and its contents. After the autoclave cycle is complete, the cabinet 5 is removed from the autoclave, allowed to cool, and then moved to a storage space or directly to an operating room or other space for use in connection with a medical procedure. The sterilized cabinet 5 remains closed until the contents are needed for a medical procedure. As long as the cabinet 5 is closed, the contents remain sterile because the filter 50 prevents contaminants from entering the cabinet interior through the vent 35.

[0010] Although the introduction of portable sterilization cabinets has significantly reduced sterilization procedures and improved efficiency in hospitals, some problems remain. For example, existing conventional cabinets can be difficult to move in and out of autoclaves and can be difficult to handle in hospitals (e.g., storage areas or operating rooms).

[0011] Additionally, existing cabinets 5 can often be difficult to store in increasingly crowded hospitals where space is at a premium, and the footprint of existing cabinets can be significantly larger in order to open them when desired due to the space required to accommodate the swing radius of the doors.

[0012] Additionally, existing cabinets can sometimes accumulate water in the bottom of the cabinet at the end of an autoclave cycle, which is undesirable for several reasons. One reason is that the water can act as a conduit that can "draw" contaminants (e.g., via wicking action, through filter 50 in cabinet bottom 25 and into interior chamber 10).

[0013] It may also be difficult for healthcare personnel to visually assess the current status of an existing cabinet or its contents. For example, it may be difficult for healthcare personnel to know whether an existing autoclaved cabinet is still too hot to handle or whether it has cooled to a safe handling temperature. Similarly, it may be difficult for healthcare personnel to visually assess or verify the status and / or inventory of the contents of an existing cabinet without opening the cabinet and contaminating the sterile field.

[0014] Other problems with existing cabinets include cumbersome internal shelving, insufficient isolation of smaller areas within the cabinet, and difficulty in accessing and changing filters. Still other drawbacks of existing cabinets are known to those skilled in the art.

[0015] Therefore, there is a need for a new and improved portable sterilization apparatus and method for sterilizing medical instruments and devices, storing the sterilized medical instruments and devices in a sterile condition until use, and transporting the sterilized medical instruments and devices to the location where a medical procedure is to be performed that overcomes one or more of the disadvantages of the prior art. Summary of the Invention [Problem to be solved by the invention]

[0016] The present invention provides a new and improved portable sterilization apparatus and method for sterilizing medical instruments and devices, storing the sterilized medical instruments and devices in a sterile condition until use, and then transporting the sterilized medical instruments and devices to the location where the medical procedure is to be performed. [Means for solving the problem]

[0017] According to one preferred aspect of the present invention, there is provided a portable sterilization system comprising a sterilization cabinet having a bottom panel, a top panel, two side panels, a back panel, and a door, which define an internal chamber; a plurality of casters or wheels mounted on the bottom panel by caster brackets or wheel brackets, each having a lateral protrusion; perforations formed in at least one of the bottom panel, the top panel, and the two side panels; at least one filter covering the perforations; a mobile cart having an upper platform for receiving the sterilization cabinet, the upper platform having a pair of mobile cart tracks extending along the length thereof and each having a lateral protrusion; and a lower support structure for supporting the upper platform and receiving wheels, wherein the lateral protrusions of the caster brackets or wheel brackets engage with the lateral protrusions of the mobile cart tracks, thereby preventing the sterilization cabinet from moving left and right or up and down relative to the mobile cart.

[0018] According to another preferred aspect of the present invention, there is provided an apparatus for holding equipment to be sterilized and / or storing sterilized equipment, the apparatus comprising: a bottom panel, a top panel, two side panels, a back panel, and a door that define an internal chamber; a plurality of casters or wheels mounted on the bottom panel; a plurality of perforations formed in at least one of the bottom panel, the top panel, the two side panels, and the back panel; at least one filter covering the plurality of perforations; and an exhaust port formed in the bottom panel.

[0019] According to another preferred aspect of the present invention, there is provided an apparatus for holding equipment to be sterilized and / or storing sterilized equipment, the apparatus comprising: a bottom panel, a top panel, two side panels, a back panel, and a door that define an internal chamber; a plurality of casters or wheels mounted on the bottom panel; a plurality of perforations formed in at least one of the bottom panel, the top panel, the two side panels, and the back panel; and at least one filter covering the plurality of perforations, wherein at least one of the bottom panel, the top panel, the two side panels, the back panel, and the door is made of a see-through material.

[0020] According to another preferred aspect of the present invention, there is provided an apparatus for holding equipment to be sterilized and / or storing sterilized equipment, the apparatus comprising: a bottom panel, a top panel, two side panels, a back panel, and a door that define an internal chamber; a plurality of casters or wheels mounted on the bottom panel; a plurality of perforations formed in at least one of the bottom panel, the top panel, the two side panels, and the back panel; at least one filter covering the plurality of perforations; and at least one filter port for receiving the filter, the filter port having a pair of rails disposed along the periphery of the plurality of perforations, the rails being sized and arranged to slidably receive the filter, and the apparatus positions the filter above the perforations.

[0021] According to another preferred aspect of the present invention, there is provided an apparatus for holding equipment to be sterilized and / or storing sterilized equipment, the apparatus comprising: a bottom panel, a top panel, two side panels, a back panel, and a door that define an internal chamber; a plurality of casters or wheels mounted on the bottom panel; a plurality of perforations formed in at least one of the bottom panel, the top panel, the two side panels, and the back panel; at least one filter covering the plurality of perforations; and a perforated filter plate that secures the filter above the plurality of perforations.

[0022] In accordance with another preferred aspect of the present invention, there is provided a method for manufacturing a device for holding equipment to be sterilized and / or storing sterilized equipment, the method comprising the steps of providing a bottom panel, a top panel, a left panel, a right panel, a back panel, and a door; securing the bottom panel, the top panel, the left panel, the right panel, and the back panel together with seals to form a rectangular chamber having an opening for receiving the equipment to be sterilized; and mounting a door on at least one of the bottom panel, the top panel, the right panel, and the left panel to close the chamber.

[0023] According to another preferred aspect of the present invention, there is provided an apparatus for holding equipment to be sterilized and / or storing sterilized equipment, the apparatus comprising: a bottom panel, a top panel, two side panels, a back panel, and a door that define an internal chamber; a plurality of casters or wheels mounted on the bottom panel; a plurality of perforations formed in at least one of the bottom panel, the top panel, the side panels, and the back panel; a filter covering the plurality of perforations; and a temperature indicator that indicates the temperature of the internal chamber.

[0024] According to another preferred aspect of the present invention, there is provided an apparatus for holding equipment to be sterilized and / or storing sterilized equipment, the apparatus comprising: a bottom panel, a top panel, two side panels, a back panel, and a door that define an internal chamber; a plurality of casters or wheels mounted on the bottom panel; a plurality of perforations formed in at least one of the bottom panel, the top panel, the side panels, and the back panel; and a filter covering the plurality of perforations, the internal chamber comprising at least two individual compartments, each of which has perforations formed in a wall of the individual compartment and a filter covering the perforations. wherein the apparatus comprises at least two doors, each door selectively closing one of the individual compartments.

[0025] According to another preferred aspect of the present invention, there is provided a method for sterilizing medical instruments, the method comprising the steps of providing a portable sterilization system, the portable sterilization system comprising a sterilization cabinet, the sterilization cabinet comprising: a cabinet bottom defining an internal chamber, a cabinet top, cabinet side walls, a cabinet rear wall, a door, perforations formed in at least one of the cabinet bottom, the cabinet top, and the cabinet side walls, at least one filter covering the perforations, and a mobile cart, the mobile cart comprising an upper platform for receiving the sterilization cabinet and a lower support structure for supporting the upper platform and for receiving wheels, the sterilization cabinet being received on the mobile cart, the method comprising the steps of placing the medical instruments to be sterilized in the sterilization cabinet, and sterilizing the medical instruments.

[0026] According to another preferred aspect of the present invention, there is provided a portable sterilization system comprising a sterilization cabinet having a bottom panel, a top panel, two side panels, a back panel, and a door that define an internal chamber; a plurality of casters or wheels mounted on the bottom panel; perforations formed in at least one of the bottom panel, the top panel, and the two side panels; at least one filter covering the perforations; and a mobile cart, the mobile cart comprising an upper platform that receives the sterilization cabinet and has a pair of adjustably mounted rail mountings and an adapter that releasably secures the mobile cart to a support structure; and a lower platform that supports the upper platform and receives the wheels, wherein when the pair of rail mountings are secured to the support structure using the adapter, the sterilization cabinet may be moved from the mobile cart to the support structure.

[0027] According to another preferred aspect of the present invention, an apparatus for transporting a container along a surface comprises an upper platform for receiving the container and having a locking mechanism for releasably securing the container to the upper platform, and a support structure for supporting the upper platform and having wheels for moving the support structure along the surface, the support structure providing an apparatus for raising and lowering the upper platform relative to the surface.

[0028] According to another preferred aspect of the present invention, there is provided a filter cartridge for use in a sterilization cabinet, comprising a frame and at least one filter held by the frame, at least a portion of the filter cartridge changing color to indicate a status of the filter cartridge.

[0029] According to another preferred aspect of the present invention, there is provided an apparatus comprising a docking station for receiving a sterilization cabinet, the docking station comprising a frame, a first platform mounted on the frame for receiving the sterilization cabinet, a second platform secured to the frame for receiving additional items to be sterilized, and a plurality of casters or wheels mounted on the frame for allowing the docking station to move along a surface, the docking station being sterilizable, and the docking station comprising a locking feature for locking the mobile cart supporting the sterilization cabinet to the frame while the sterilization cabinet is moved from the mobile cart to the docking station. [Brief explanation of the drawings]

[0030] [Figure 1] 1 is a schematic diagram showing a conventional portable sterilization cabinet. [Figure 2] 1 is a schematic diagram showing a conventional portable sterilization cabinet. [Figure 3] 1 is a schematic diagram showing a conventional portable sterilization cabinet. [Figure 4]FIG. 1 is a schematic diagram showing a novel portable sterilization system including a novel sterilization cabinet and a novel mobile cart. [Figure 5] FIG. 1 is a schematic diagram showing a novel portable sterilization system including a novel sterilization cabinet and a novel mobile cart. [Figure 6] FIG. 1 is a schematic diagram showing a novel portable sterilization system including a novel sterilization cabinet and a novel mobile cart. [Figure 7] FIG. 1 is a schematic diagram showing a novel portable sterilization system including a novel sterilization cabinet and a novel mobile cart. [Figure 8] FIG. 1 is a schematic diagram showing a novel portable sterilization system including a novel sterilization cabinet and a novel mobile cart. [Figure 9] FIG. 1 is a schematic diagram illustrating another embodiment of the novel sterilization cart according to the present invention. [Figure 10] FIG. 10 is a schematic diagram illustrating yet another embodiment of the novel sterilization cart according to the present invention. [Figure 11] FIG. 1 is a schematic diagram showing the electronic control system of the portable sterilization system according to the present invention. [Figure 12] 1 is a schematic diagram illustrating a universal mobile cart formed in accordance with the present invention; [Figure 13] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 14] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 15] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 16] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 17] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 18] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 19] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 20] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 21] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 22] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 23] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 24] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 25] FIG. 1 is a schematic diagram showing further details of a portable sterilization system according to the present invention. [Figure 26] FIG. 1 is a schematic diagram showing a novel sterilization cabinet formed with multiple internal sterilization chambers. [Figure 27] FIG. 1 is a schematic diagram illustrating the status indicator features of a sterilization cabinet according to the present invention. [Figure 28] FIG. 1 is a schematic diagram showing a portable sterilization system with an external shelf. [Figure 29] 1 is an exploded schematic view of a novel sterilization cabinet formed in accordance with the present invention; FIG. [Figure 30(A)-(D)] 1 is an exploded schematic view of a novel sterilization cabinet formed in accordance with the present invention; FIG. [Figure 30(E)] 1 is a schematic diagram illustrating a novel docking station formed in accordance with the present invention. [Figure 31] 1 is a photograph of an improved vent and filter assembly for a sterilization cabinet in accordance with the present invention. [Figure 32] 1 is a photograph of an improved vent and filter assembly for a sterilization cabinet in accordance with the present invention. [Figure 33] 1 is a photograph of an improved vent and filter assembly for a sterilization cabinet in accordance with the present invention. [Figure 34] 1 is a photograph of an improved vent and filter assembly for a sterilization cabinet in accordance with the present invention. [Figure 35]1 is a photograph of an improved vent and filter assembly for a sterilization cabinet in accordance with the present invention. [Figure 36] 1 is a photograph of an improved vent and filter assembly for a sterilization cabinet in accordance with the present invention. [Figure 37] 1 is a photograph of an improved vent and filter assembly for a sterilization cabinet in accordance with the present invention. [Figure 38] 1 is a photograph of an improved vent and filter assembly for a sterilization cabinet in accordance with the present invention. [Figure 39] 1 is a photograph of an improved vent and filter assembly for a sterilization cabinet in accordance with the present invention. [Figure 40] 1 is a photograph of an improved vent and filter assembly for a sterilization cabinet in accordance with the present invention. [Figure 41] 1 is a photograph of an improved vent and filter assembly for a sterilization cabinet in accordance with the present invention. [Figure 42] FIG. 42 is a schematic diagram of the improved outlet and filter assembly of FIGS. [Figure 43] FIG. 42 is a schematic diagram of the improved outlet and filter assembly of FIGS. [Figure 44] FIG. 42 is a schematic diagram of the improved outlet and filter assembly of FIGS. [Figure 45] FIG. 42 is a schematic diagram of the improved outlet and filter assembly of FIGS. DETAILED DESCRIPTION OF THE INVENTION

[0031] The present invention provides a new and improved portable sterilization apparatus and method for sterilizing medical instruments and devices, storing the sterilized medical instruments and devices in a sterile condition until use, and then transporting the sterilized medical instruments and devices to the location where the medical procedure is to be performed.

[0032] These and other objects and features of the present invention will be more fully disclosed and shown in the following detailed description of the preferred embodiments of the invention, which should be considered in conjunction with the accompanying drawings, in which like reference numerals indicate like elements and in which: Referring now to FIG. 4, a novel portable sterilization system 100 is shown, including a novel sterilization cabinet 105 and a novel mobile cart 200.

[0033] The sterilization cabinet 105 generally comprises a rectangular interior chamber 110 (FIG. 13) enclosed by a cabinet bottom 125, cabinet side walls 126, a cabinet back wall 127, and a cabinet top 140. The cabinet 105 may further comprise one or more doors 130 for selectively opening and closing the interior chamber 110 of the cabinet 105. The cabinet 105 may further comprise gaskets (not shown) at the door-to-frame interfaces of the cabinet 105 to seal the cabinet 105 when the doors are closed. The interior chamber 110 of the cabinet 105 also preferably includes shelves 145 (FIG. 23) for supporting surgical trays, instruments, etc. within the chamber 110.

[0034] Additionally, the cabinet 105 includes one or more vent holes 135 formed in at least one of the cabinet side walls 126, the cabinet back wall 127, the cabinet top 140, and the cabinet bottom 125. The vent holes 135 are covered by filters 150, and a filter cover 155 (FIG. 23) holds the filters 150 in place over the vent holes 135. Further details of the sterilization cabinet 105 (e.g., modifications to the doors 130, filters 150, shelves 145, etc.) are described in more detail below.

[0035] To move the sterilization cabinet 105 along a surface (e.g., a floor, a mobile cart 200, etc.), the sterilization cabinet 105 includes a plurality of casters or wheels 160 (typically shown in the schematic diagrams). In a preferred embodiment of the present invention, the casters or wheels 160 are mounted to the cabinet bottom 125, for example, via a conventional wheel or caster bracket (described below). While the casters or wheels 160 are not shown in many of the drawings due to the angle of the drawings, they are shown in Figures 7(C), 13, 22(A), 22(B), 23, 24, 25(A), 27, 29(D), 30(D), 36, 37, 39, 40(E), 41(F), 42(G), 43(H), 44(I), 45(I), 46(I), 47(I), 48(I), 49(I), 50(I), 51(I), 52(I), 53(I), 54(I), 55(I), 56(I), 57(I), 58(I), 59(I), 60(I), 61(I), 62(I), 63(I), 64(I), 65(I), 66(I), 67(I), 68(I), 69(I), 70(I), 71(I), 72(I), 73(I), 74(I), 75(I), 76(I), 77(I), 78(I), 79(A), 80(B), 81(C), 82(D), 83(E), 84(F), 85(G), 86(I), 87(I), 88(I), 89(I), 90( Note that this can be clearly seen in 41, 43, and 44.

[0036] The sterilization cabinet 105 can be moved along the floor via its casters or wheels 160, but in many situations it may be desirable to move the sterilization cabinet 105 on a mobile cart 200, for example, to an autoclave, operating room, or storage room.

[0037] More specifically, the mobile cart 200 provides a platform upon which the sterilization cabinet 105 may be placed for transport between locations. By way of example and not by way of limitation, the mobile cart 200 may be used to move the sterilization cabinet 105 from one part of a facility to another (e.g., from a sterile processing unit or autoclave to an operating room). Also by way of example and not by way of limitation, the mobile cart 200 may be used to move the sterilization cabinet 105 in and out of storage and / or move the sterilization cabinet 105 in and out of an autoclave and / or move the sterilization cabinet 105 between facilities or between patient rooms.

[0038] The mobile cart 200 generally includes an upper platform 205 (FIG. 4) that receives the sterilization cabinet 105 and a lower platform 210 that is mounted with mechanisms (e.g., wheels) for moving the mobile cart between locations. A vertical elevator 215 extends between the upper platform 205 and the lower platform 210. The mobile cart 200 preferably includes a handle 220 for maneuvering the mobile cart 200 between locations.

[0039] 4 and 5, the mobile cart 200 includes swivel casters 225 that allow the mobile cart 200 to be moved between locations. The casters 225 may be adjusted between swivel and non-swivel positions by easily accessible foot pedal adjustments on the casters 225 or by adjustments made at the handle 220. In other words, a user can adjust the casters 225 from a first configuration in which the casters are swivelable and a second configuration in which the casters 225 are locked from swivel. This feature provides the user with additional control over the mobile cart 200 when moving the mobile cart 200 between locations. The casters 225 may be anti-static as an added safety feature.

[0040] The mobile cart 200 may be equipped with a compliant shock-absorbing suspension system that allows for a smoother "ride" over terrain changes and inclines and during transport of instrument trays (loaded with medical instruments or other contents) both in and out of the sterilization cabinet 105.

[0041] By way of example and not limitation, the portable sterilization system 100 may be transported and fully loaded by a remote sterilization company to and from a medical or other facility that may be hundreds of miles away from the remote sterilization facility. The shock absorbing suspension system can improve the safety and security of the loaded medical equipment and limit damage and / or displacement that may occur during transport.

[0042] As shown in FIG. 5, the shock absorbing suspension system may include shock absorbing suspension springs 230 disposed on casters 225 and / or resilient springs 235 mounted between the upper platform 205 and the lower platform 210 at a fixed position of the up / down elevator 215.

[0043] Alternatively, the up / down elevator 215 may be configured in a telescoping configuration, and the resilient springs 235 may be disposed around and / or inside the telescoping up / down elevator 215. The resilient springs 235 are adapted to provide shock absorption to the upper platform 205 (and the sterilization cabinet 105) when the casters 225 encounter an unevenness or other surface irregularity that causes an impact on the mobile cart 200. 2. The springs 230 and 235 are configured to bias the upper platform 205 and the lower platform 210 away from each other, as shown in FIG. 2. An additional shock absorbing spring 230 or resilient spring 235 may be mounted on any other load-bearing portion of the mobile cart 200 to provide shock absorption during transport of the portable sterilization system 100.

[0044] The mobile cart 200 may also include a "deadman" safety grip and / or an automatic braking system. More specifically, and with reference to FIG. 5, a deadman safety grip 240 is shown. The deadman safety grip 240 is connected (electrically, mechanically, or otherwise) to one or more wheel brakes that can prevent movement of the casters (or other wheels) (not shown). In one aspect of the invention, the wheel brakes are configured to brake the casters 225 of the mobile cart 200 in a default position, thereby preventing movement of the mobile cart 200. When the deadman safety grip 240 is actuated by a user, the wheel brakes move to a second configuration, thereby allowing the wheels to rotate freely. Thus, the wheels (and thus the mobile cart) are prevented from rotating until the deadman safety grip 240 is actuated. This feature provides foolproof braking during loading and unloading of the sterilization cabinet 105 onto and from the mobile cart 200, and during loading and unloading of the contents of the sterilization cabinet 105.

[0045] The transfer cart 200 may also include a power-assist mechanism 245 (FIG. 4), which may be incorporated into or attached to the transfer cart 200. As shown in FIG. 5, the power-assist mechanism 245 may include a motor that drives the casters 225 when a motor / servo power-assist handle or other control (not shown) is actuated by a user (e.g., by turning the handle like a throttle grip on a motorcycle). The power-assist mechanism 245 may assist when transporting heavier loads over longer distances, on slopes, and / or on uneven surfaces. The power-assist mechanism 245 may drive the wheels forward or reverse.

[0046] 6, in one embodiment, the mobile cart 200 may be provided with a mechanism for coupling the mobile cart to one or more other mobile carts 200 so that the mobile cart may be used to pull (or push) the other mobile carts during transport between locations. To enable such coupling capability, the mobile cart 200 may include a male part 250 located at one end of the lower platform 210 of the mobile cart 200 and a female part 255 located at the opposite end of the lower platform 210 of the mobile cart 200, such that the male or female part of a given cart may be coupled to a complementary male or female part of another cart. One or both of the male part 250 and the female part 255 may be retracted or folded away below the mobile cart 200 when the mobile cart or towing / coupling feature is not in use.

[0047] In one embodiment, the mobile cart 200 may be configured with bumpers and / or rollers 260 (FIG. 7(A)) that protect the mobile cart 200 and other objects and facilitate movement of the mobile cart 200 from one location to another (e.g., during transport through hospital hallways).

[0048] 7(A)-7(D), the mobile cart 200 is preferably releasably secured to the cabinet 105 by a combination of complementary tracks or rails and locking latches or similar devices.

[0049] The mobile cart 200 captures the interlocking caster brackets (which mount the casters or wheels 160 to the cabinet 105) to provide an improved safety feature of the interlocking tracks or rails. More specifically, the lips 265 extend into the body from a pair of mobile cart tracks or rails 270 that themselves extend upwardly from the sides or top surface of the upper platform 205 of the mobile cart 200 (i.e., the tracks or rails 270 extend along each side of the mobile cart 200). The lips 265 slidably engage elongated protrusions 165 on the cabinet caster or wheel brackets 170 to prevent lateral (i.e., side-to-side) or vertical movement of the sterilization cabinet 105 relative to the mobile cart 200 while the cabinet 105 is positioned on the mobile cart 200.

[0050] The mobile cart 200 and sterilization cabinet 105 are preferably configured to provide an automatic locking feature that securely maintains the cabinet 105 on the mobile cart 200. More specifically, with reference to Figures 7(A) and 7(B), the mobile cart 200 may be configured with a central locking latch 275 mounted to the upper platform 205 of the mobile cart 200. The central locking latch 275 may receive a bar 175 that extends across the bottom of the sterilization cabinet 105 to prevent the sterilization cabinet 105 from moving forward or backward relative to the mobile cart 200 after the bar 175 is received in the latch 275.

[0051] The mobile cart 200 is preferably configured to be "universal" by providing adjustable rail installation and mounting so that it can accommodate different sterilization cabinet or other cargo sizes and / or different destination sizes for the sterilization cabinet 105 (e.g., different autoclaves or storage racks).

[0052] More specifically, with reference to Figures 8(A)-8(D), the transfer cart 200 may be configured with a universal rail mounting 280 having an adjustable width along directional arrows 1 or 3 shown in Figure 8(A), and a detachable adapter 285 also having an adjustable width. The adjustable rail 280 and adapter 285 may mate with each other, such as in a male / female configuration shown in Figure 8(B), to provide a smooth surface for transferring the sterilization cabinet 105 from the transfer cart 200 to its destination (e.g., a storage rack, autoclave, etc.). The width of the universal rail 210 and adapter 285 is determined, at least in part, with reference to the width of a corresponding feature of the destination (e.g., may be determined by the width of an associated element of the storage rack or autoclave).

[0053] The adapter 285 may be configured to extend straight above the upper platform 205 (as shown in FIG. 8(A)) or to fold up so that it does not protrude at the end of the mobile cart 200 (as shown in FIGS. 8(C) and 8(D)). Alternatively, the adapter 285 may be configured to be entirely removable from the mobile cart 200. The adapter 285, if further configured to be removable from the mobile cart 200, may be stored in an inconspicuous location on the mobile cart 200 or may be stored near its destination for use.

[0054] The above-described mating features improve productivity, reduce costs, and improve the ease and safety of transporting (e.g., through hospital corridors) of the portable sterilization system 100. When the adapter 285 is removed and / or folded (as shown in FIGS. 8(C) and 8(D)), a shorter, less hazardous cart front with a rounded nose is revealed at the front end of the portable sterilization system 100. As noted above, the adapter 215 may remain with each mobile cart 200 as a folded or stowable element, or may be left at its desired destination (e.g., in the sterile processing area for storage adjacent to the autoclave, or next to a storage rack or rack system).

[0055] In another embodiment of the present invention, the upper platform of the mobile cart can be An alternative mobile cart is provided that is adjustable up and down to raise and lower the platform (and thus the sterilization cabinet 105 secured to the upper platform). As an example, the upper platform of the mobile cart may be lowered for better visibility during transport between locations, and raised to the desired height when the sterilization cabinet is opened at the desired location.

[0056] The vertically adjustable mobile cart may be raised and lowered mechanically (e.g., with a scissor lift, as described in further detail below), electronically, hydraulically, pneumatically, by a battery-operated power unit, or other suitable means. Referring to FIG. 9, for this purpose, a vertically adjustable transfer cart 300 is provided.

[0057] The vertically adjustable transfer cart 300 is generally similar to the transfer cart 200 described above, except that the vertical elevator 215 and lower platform 210 are replaced with a scissor lift 315 having an upper end 320 and a lower end 325 .

[0058] The sterilization cabinet 105 is secured to the upper platform 305 of the mobile cart 300, as described above. A scissor lift 315 is connected at its upper end 320 to the upper platform 305 and at its lower end 325 to wheels 330 for movement between locations. According to this aspect of the invention, the scissor lift 315 may be actuated to lower the upper platform 305 until it is approximately flush with the floor.

[0059] 10, in another embodiment of the present invention, a vertically adjustable mobile cart 400 is provided. Mobile cart 400 is generally similar to mobile cart 200 described above, except that the vertical elevator 215 is replaced with a scissor lift 415 having an upper end 420 and a lower end 425.

[0060] More specifically, the mobile cart 400 comprises an upper platform 405 secured to the sterilization cabinet 105, a lower platform 410, and a scissor lift 415 extending between the upper platform 405 and the lower platform 410, as described above.

[0061] As described above, the driving of the scissor lift 415 in this embodiment moves the upper platform 405 up and down, but the upper platform 405 is not lowered completely to ground level (i.e., to the level of the lower platform 410). This embodiment can provide additional stability to the mobile cart 400.

[0062] The scissor lifts 315 and 415 of the mobile carts 300 and 400 may each be driven (i.e., raised and lowered) by a lifting mechanism which may be a mechanical hand pump, hydraulic, or pneumatic, or may be power assisted (mechanical, hydraulic, pneumatic, etc.) by electrical or battery operation.

[0063] Mobile carts 300 and 400 may also include an electronic control system (as shown in FIG. 11 and described in more detail below) that allows the user to pre-program a specific height into the electronic control system or supports the mobile cart to assume a desired height (e.g., a height for loading the sterilization cabinet into a specific autoclave, or a height suitable for staff loading, unloading, or transporting the sterilization cabinet in an operating room or sterile processing section). This feature allows for height adjustment, providing ergonomic benefits for nurses or technicians of varying heights without encroaching on the sterile field.

[0064] As an added benefit of the height adjustments described above, the sterilization cabinet can be lowered during transport to improve visibility above the top of the cabinet and the center of gravity can be lowered to reduce the likelihood of tipping. As mentioned above, pre-programmed heights may also be set by the user.

[0065] Referring now to FIG. 11, the mobile carts of the present invention (eg, mobile carts 200, 300, and 400) may also include an electronic control system 290 for tracking and / or identifying the contents of the mobile cart and the sterilization cabinet 105.

[0066] More specifically, the electronic control system 290 of the mobile cart of the present invention preferably has the capability to be electronically tracked by a device such as LOJACK® or similar tracking system. In other words, the location of the mobile cart (e.g., building, floor, room) may be remotely monitored using a global positioning system (GPS), radio frequency identification (RFID), or other location tracking device.

[0067] The electronic control system 290 may also use RFID or other identification technology to identify the particular sterilization cabinet 105, the contents of the sterilization cabinet 105 (e.g., trays or instruments), its location, the current temperature, and / or the sterilization state (e.g., pre-sterilization, post-sterilization, sterile, or non-sterile, etc.) The electronic control system 290 may also provide additional information such as the date, operator, cycle, cycle type, and contents of the sterilization cabinet 105, among others. The information provided by the electronic control system 290 may be displayed to the user on a screen or may be communicated to the user audibly through a speaker.

[0068] 12, a universal mobile cart 500 is provided. The universal mobile cart 500 may operate not only as a mobile cart for sterilization cabinets 105, but also as a mobile cart for other equipment (e.g., interchangeable case cart elements 505 that do not sterilize but hold instrument trays). Sterilization cabinets and case cart elements may be stacked one on top of the other on a storage rack system, for example, up to a height of four cabinets. For example, referring to FIG. 20, two sterilization cabinets 105 are shown (schematically) stacked one on top of the other. 13-27, additional features of the sterilization cabinet 105 will be described in further detail.

[0069] In a preferred embodiment of the present invention, the door 130 can be provided in a variety of configurations to minimize the footprint required when access to the interior of the sterilization cabinet chamber 105 is required. Referring now to Figure 13, in one embodiment of the present invention, a door 130 is hinged to one side of the sterilization cabinet 105 and can be opened 180°.

[0070] 14, in another embodiment of the invention, door 130 may be mounted to cabinet sidewall 126 with hinges 180 such that door 130 may be opened 270°. Door 130 and sidewall 126 may, if desired, be provided with a device (e.g., a "hook and mesh" fastener such as a Velcro® fastener) to releasably secure door 130 to sidewall 126 of cabinet 105 to keep the open door close to (and generally parallel to) sidewall 126 of cabinet 105, thereby reducing the overall footprint of cabinet 105 when door 130 is open.

[0071] Referring now to FIG. 15, in another embodiment of the present invention, the doors 130 may comprise a pair of French doors 130 with gaskets or other seals in the middle and around the perimeter of each door 130 (not shown), both French doors 130 being optionally openable and releasably attached to the sides of the cabinet as described above.

[0072] 16 and 17, in yet another embodiment of the present invention, the door 130 can open and slide downward (as shown in FIG. 16) or upward (as shown in FIG. 17) along inner or outer tracks (not shown) located along the left and right side walls 126 of the sterilization cabinet 105. Alternatively, the door 130 may swing over the top of the sterilization cabinet 105 (not shown).

[0073] 18, in yet another embodiment of the present invention, the door 130 may comprise one or more bi-fold doors 130 that may be opened (and folded) to expose the interior chamber 110. In one preferred aspect of the present invention, the bi-fold door 130 may be folded 270° (e.g., as described above) such that the door 130 may be positioned approximately parallel to the side wall 126 of the sterilization cabinet 105. Furthermore, the bi-fold door 130 and side wall 126 are preferably constructed such that when the door 130 is folded back against the bi-fold door 130, the door 130 is releasably secured to the side wall 126 (e.g., with a "hook and mesh" fastener such as a Velcro® fastener).

[0074] In another aspect of the invention, the sterilization cabinet can have a dome-shaped closure top (not shown) rather than a door. That is, the top of the sterilizable cabinet can be moved upward to expose the contents of the sterilization cabinet. The shape of the dome-shaped top is typically configured to provide an airtight seal around the sterilization cabinet.

[0075] The dome-shaped top may therefore be any shape that fits snugly over the top of the frame of the sterilization cabinet 110. In this embodiment, the dome-shaped top may be raised (e.g., manually, mechanically, electronically assisted, etc.) to expose the contents of the sterilization cabinet 105. If desired, the dome-shaped top may be formed of a transparent material to allow full visibility of the contents of the sterilization cabinet 105.

[0076] 19, in yet another aspect of the present invention, the sterilization cabinet 110 may include a frame such that the back wall 127, side walls 126, and door 130 can be loosened from the frame 185 and slid down an inner or outer track on the outside of the mobile cart 200. In this embodiment of the present invention, the handle 220 of the mobile cart 200 may be removable to facilitate smooth sliding of the side walls and / or door along the track.

[0077] In another preferred aspect of the invention, means may be provided to allow a user to access the contents of the sterilization cabinet without having to open the sterilization cabinet door.

[0078] More specifically, the entire sterilization cabinet 105 may be formed from a transparent material (e.g., glass, a transparent polymer, etc.) so that the contents of the sterilization cabinet can be viewed. For example, referring to Figure 20, a transparent sterilization container 105 is shown positioned on top of a mobile cart 200, and a second, non-transparent sterilization container 105 is shown positioned on top of the transparent sterilization container 105.

[0079] Referring now to Figure 21, in other embodiments, the sterilization cabinet 105 may include one or more windows 190 (or "oven doors") located on one or more of the side walls 126, back wall 127, or door 130 of the sterilization cabinet 105, thereby allowing a view into the cabinet to assess the contents of the cabinet and whether all of the desired equipment and instruments are present.

[0080] The entire cabinet or window 190 may be formed of high temperature polycarbonate material, and / or "switchable" smart glass / film that changes from clear to translucent, and / or other suitable material (e.g., to indicate "sterile" or "non-sterile"), as desired.

[0081] In another aspect of the present invention, an improved filter and filter port are provided to improve access to the filter for replacement or access. Referring now to Figures 22(A) and 22(B), a sterilization cabinet 105 may include a filter port 152 accessible from outside the cabinet, thereby providing easier access for viewing and changing the filter 150 (e.g., compared to a filter cover 155). By way of example and not limitation, the externally accessible filter port 152 may include a pull-out access shelf for slidably receiving the filter 150 and positioning the filter over the vent 135. After the filter 150 is slidably positioned in the filter port 152 at the desired location over the vent 135, it may be held in place by a locking bar 154 that controls a cam mechanism 156 (which releasably locks the filter 150 in place).

[0082] The filter 150 may comprise cardboard, a filter cassette, a reusable carbon filter, or other filter material and construction known in the art. The filter 150 may also be a two-layer filter created by sewing, gluing, encasing, crimping, or pressing two layers of filter material together to form the desired size.

[0083] The filter 150 may also change color to convey information about its status (e.g., a first color may indicate that the filter is suitable for use, while a second color may indicate that the filter is not in use and should be replaced).

[0084] Thus, in one preferred aspect of the present invention, the filters are manufactured using a process that adds agents into or onto the filter (in any desired pattern, including as requested by the customer) after sterilization in a sterilization cabinet (as long as the sterilization process meets predetermined parameters). In other words, the filter itself becomes a Class 5 status indicator in addition to any other indicators that may be used during the sterilization process. This type of filter is a significant improvement over filters currently available on the market because it provides a fail-safe mechanism to ensure that a single-use, disposable filter is used only once. This also allows operating room staff to visually confirm that the process has been completed by glancing at the large filter material. The filter 150 may also be used for purposes other than in conjunction with an existing sterilization cabinet and / or portable sterilization system 100. In some applications of the present invention, it may be appropriate not to use any filters with the cabinet.

[0085] Referring again to Figure 13, the sterilization cabinet 105 may have a drain 195 located in the cabinet floor 125 to remove water that accumulates within the cabinet during the sterilization process. In this configuration, the drain 195 is located at the lowest point on the bottom of the sterilization cabinet 110. The bottom panel 125 is preferably designed with a pitch to the lowest point on the panel, whether that be midway along the panel, along one side of the panel, or at a corner of the panel. One or more drains may be used in each cabinet.

[0086] The outlet 195 may be temperature controlled, if desired. In this aspect of the invention, the outlet 195 may be made of a material such as a shape memory alloy, such as Nitrinol, that can change configuration in response to temperature changes. , or may be formed with a so-called "bimetallic" construction. By way of example and not by way of limitation, the outlet 195 is open when temperatures within the sterilization cabinet are higher to release excess water produced during the sterilization process, and is closed when temperatures within the sterilization cabinet are lower to seal the sterilization cabinet from potential contaminants.

[0087] In other embodiments, the vent 195 may open and close depending on the pressure level within the sterilization cabinet. By way of example and not by way of limitation, the vent 195 may be configured to open when the pressure within the sterilization cabinet is within a particular level to release excess water produced during the sterilization process, and to close when the pressure within the sterilization cabinet is within a particular level to seal the sterilization cabinet from potential contaminants.

[0088] In yet other embodiments, the vent 195 may be configured to open and close depending on the amount of time that has elapsed since the sterilization process. By way of example and not by way of limitation, the vent 195 may be configured to be open during the time it takes to sterilize the contents of the sterilization cabinet to release excess water produced during the sterilization process, and closed after the contents of the sterilization cabinet have been sterilized to seal the sterilization cabinet from potential contaminants.

[0089] In yet another embodiment of the present invention, the sterilization cabinet 110 includes improved shelf management options to reduce the hassle of internal shelving compared to conventional sterilization cabinets.

[0090] 23, more specifically, the sterilization cabinet 105 may be configured with wrinkle or stamp walls 146 for easily removing and replacing the shelves 145 at multiple heights without having to adjust clips within the cabinet. In this aspect of the invention, the shelves 145 may be adjustable to various heights, and this adjustment may preferably be accomplished with one hand (e.g., by "squeezing and releasing" the shelves or other similar alternative actions). Alternatively, referring to FIG. 24, a mounting shelf support 147 may be bolted to the cabinet 110 to support the shelf 145 .

[0091] 25(A) and 25(B), in yet another aspect of the present invention, a shelf 145 may be attached to a mounting shelf support 147 by a spring-loaded peg 148.

[0092] In other embodiments, drawer-style shelves may also be used (not shown). Additionally, the shelves may be constructed of various materials that may aid in the sterilization process and / or provide other benefits (e.g., the shelves may be made of aluminum, which has better heat transfer properties, or may be made of less expensive materials, etc.). In another embodiment, the present invention provides a sterilization cabinet that has the ability to isolate smaller areas within the sterilization cabinet. More specifically, with reference to FIG. 26, the sterilization cabinet 105 may be configured to provide multiple chambers 110 within the cabinet 105 .

[0093] More specifically, in this aspect of the invention, the sterilization cabinet 105 comprises separate individual chambers 110, each accessible by a separate door 130. Each chamber 110 preferably has its own vent 135 and filter 150 to allow the passage of air or heat during the sterilization process. Each individual chamber 110 may also have a sterile / non-sterile indicator 197 (of the same or similar type as described in more detail below) to indicate the sterile / non-sterile status of the compartment.

[0094] Compartmentalization provides the option of using the contents of some chambers 110 for different procedures. In other words, all chambers 110 and their contents can be sterilized simultaneously, and the contents of individual chambers 110 can be used without compromising the sterility of the other chambers 110 or their contents. By way of example and not limitation, four trays (disposed in one or more chambers 110) can be transported to an operating room for a "four-tray procedure" (i.e., a medical procedure requiring four trays of sterilized medical instruments), while eight other trays disposed in a different set of chambers within the same sterilization cabinet 105 can be transported to a second operating room for an "eight-tray procedure" (i.e., a medical procedure requiring eight trays of sterilized medical instruments). The compartmentalized sterilization cabinet 105, in combination with the mobile cart 200, can function as a transport system for more than one medical procedure, providing several efficiency gains, including, but not limited to, fewer staff required to transport sterilized trays and less equipment required to transport trays to desired locations.

[0095] In addition to the above, the sterilization cabinet 105 may have additional features to assist in determining completion of the sterilization process or to provide additional information about the status of the cabinet (e.g., whether the sterilization cabinet is too hot to open, etc.).

[0096] By way of example and not limitation, such additional features may include an indicator in a cabinet window or panel that changes color after the cabinet has been sterilized and returns to its original color after the cabinet has been opened (and thus rendered non-sterile).

[0097] 27, an external indicator 197 located on the cabinet itself may indicate when the cabinet is too hot to touch (e.g., by making a "hot" indicator more visually prominent than a "solid" or "cold" indicator), and may cause the "hot" indicator to become less visually prominent when the cabinet reaches an appropriate handling temperature. Similarly, another indicator 198 may indicate whether the cabinet door has been opened (e.g., by turning "solid" or making a "non-sterile" indicator more visually prominent than a "sterile" indicator). This indicator may also provide other information to the user (e.g., whether the door has been "opened" or is being maintained in a "closed" position) in the manner described above. (Sterilization Cabinet Sizing and Configuration)

[0098] The sterilization cabinet 105 can be manufactured in a number of sizes, including but not limited to specific size sterilization cabinets that accommodate 4 trays, 8 trays, 9 trays, or 12 trays, etc.

[0099] 28, each size cabinet can also be manufactured with a separate external mounting shelf 600 located on the exterior of one or more side walls 126 to maximize space utilization (e.g., in the autoclave chamber for each autoclave cycle). The external mounting shelf 600 can accommodate additional trays or rigid containers of packaged instruments and can be attached to the cabinet 105 for easy removal at the end of a cycle. The external mounting shelf 600 can be mounted separately on the exterior of the cabinet 105 (as in the case of external mounting shelf 600). Alternatively, the external mounting shelf can take the form of a rack 650 that can be removably attached (e.g., clipped) to the side wall 126 of the sterilization cabinet 105. Each mounting shelf can be provided on its own mobile cart depending on the size required, and all shelves can be compact or foldable for easy storage when not in use. Construction materials

[0100] The sterilization cabinet 105 has many options for the material from which the cabinet is constructed. In one preferred embodiment of the present invention, the sterilization cabinet 105 may be manufactured from stainless steel. However, the sterilization cabinet 105 can also be manufactured from a variety of materials in addition to stainless steel, including, but not limited to, aluminum (allowing for a lighter product and the potential for multiple color options during anodizing) or polymer.

[0101] If desired, the door handle 132, deadman's safety grip 240, and any other surfaces that may be handled in moving the portable sterilization system 100 may be covered with a disposable sanitary wrap or film depending on the sterilization procedure. Alternate configuration

[0102] The sterilization cabinet 105 can also be configured to be used as a "back table" during a medical procedure. More specifically, once the sterilization cabinet is opened (e.g., via the door configurations and / or dome-shaped top described above, etc.), shelves can be presented to the user using a "toolbox" or "tackle box" design, swinging shelves, or adjustable shelving system, allowing for easy access to all of the interior trays. manufacturing technology

[0103] 29, an exploded view of a sterilization cabinet 105 according to one embodiment is shown that is "bolted together" around an inner frame. More specifically, the sterilization cabinet 105 may include a frame 112, and side walls 126, a back wall 127, a top wall 140, and a bottom wall 125 may be attached to the frame 112 to form the interior chamber 110 of the cabinet 105. Each wall may be attached to the frame 112 by bolts 113 or other suitable means. A sealant 114 or O-ring type seal (not shown) may be placed around the perimeter of the frame 112 and between each wall to ensure an airtight seal.

[0104] 30, in another embodiment of the present invention, the walls of the sterilization cabinet 105 may be bolted together without a frame. In this embodiment, the side, back, top, and bottom panels are each attached to one another with bolts 113, and a layer of sealant 114 is applied to the interface between each panel.

[0105] The embodiment of the present invention shown in Figures 29 and 30 may provide other advantages, including, but not limited to, reduced shipping costs, since the pre-assembled sterilization cabinet can be shipped in a smaller shipping container (e.g., with the top, bottom, side, back, and door panels laying flat against each other). The sterilization cabinet can then be assembled on-site by appropriately trained personnel who can assess the correctness of the assembly (including hermetic sealing) using conventionally known biological testing methods. Docking Station

[0106] The portable sterilization system 100 may be configured for use with an optional docking station. Referring now to Figure 30(E), docking station 700 comprises a frame 705 and wheels 715. Frame 705 provides a space 720 for receiving one or more sterilization cabinets 105. Docking station 700 preferably also comprises shelves 725 (which can receive additional sterilizable instrument containers). Docking station 700 is itself sterilizable and may be placed directly into an autoclave.

[0107] In one preferred aspect of the invention, the mobile cart 200 and the docking station 700 are releasably secured to one another. In this aspect of the invention, a user may transport the mobile cart 200 (which supports the sterilization cabinet 105) to the docking station 700, then releasably secure the mobile cart 200 to the docking station 700 (or otherwise ensure that neither the mobile cart 200 nor the docking station 700 moves when moving the sterilization cabinet 105 from the mobile cart 200 to the docking station 700), and the cabinet 105 may then be easily moved from the mobile cart 200 onto the docking station 700. The mobile cart 200 may then be removed from the docking station 700, and the docking station 700 (and any containers loaded thereon) may be moved into an autoclave for sterilization.

[0108] Some advantages of using the docking station 700 in conjunction with the portable sterilization system 100 include, but are not limited to, (i) improving the space utilization efficiency of the autoclave since the sterilization cabinet 110 may be placed on the docking station 700 that also carries additional containers requiring sterilization, and (ii) allowing the mobile card 200 to be used by another user after the sterilization cabinet 105 has been moved from the mobile cart 200 to the docking station 700.

[0109] In this regard, it is noted that in some aspects of the present invention (e.g., when the mobile cart 200 is used to transport heat- and moisture-sensitive components such as electronic components), the mobile cart 200 is not intended to be sterilizable. Improved condensate outlet and filter port In yet another aspect of the present invention, an improved condensation vent and filter port is provided to significantly improve the performance of the sterilization cabinet 105.

[0110] More specifically, it has been discovered that removing condensate from the sterilization cabinet as a liquid (rather than as a vapor) significantly improves the performance of the sterilization cabinet. It has been found that the steam used during the sterilization process produces a significant amount of condensate (i.e., liquid water) during the sterilization process. The condensate flows by gravity to the lowest point of the sterilization cabinet. During the drying phase of the sterilization process, a vacuum is applied to the autoclave chamber. When the pressure in the sterilization cabinet equalizes with the autoclave pressure, the condensate is pulled out of the sterilization cabinet through a drain (more specifically described below) located at the lowest point of the sterilization cabinet.

[0111] More specifically, and with reference to Figures 31-45, in a preferred embodiment of the present invention, an improved drain 800 is provided to allow condensation to escape from the sterilization cabinet 105 without compromising sterility. The drain 800 is located at the lowest point of the bottom wall 125 of the sterilization cabinet 105. The sterilization cabinet 105 preferably has a floor with a pitch such that condensation will be drawn by gravity to the lowest point of the bottom wall 125.

[0112] The outlet 800 comprises a recess 805 formed below the lowest point of the bottom wall 125 of the sterilization cabinet 105. This configuration of the outlet prevents moisture from remaining inside the cabinet 105. The recess 805 may be formed from thick stainless steel or other material to retain heat and improve evaporation of any condensation that may enter the recess 805.

[0113] The outlet 800 preferably comprises a grill plate / screen floor 810 disposed above the recess 805. The grill plate / screen floor 810 provides a rigid platform for supporting a filter (as described more particularly below). The grill plate / screen floor 810 is permeable to allow condensate to pass through. A filter 815 is disposed on top of the grill plate / screen floor 810. The filter 815 is configured to allow condensate to pass through and exit the sterilization cabinet 105 while preventing contaminants from entering the sterilization cabinet 105.

[0114] A rigid filter door 820 is positioned across recess 805 and over the top of filter 815, thereby capturing filter 815 between filter door 820 and grill plate / screen floor 810. Filter door 820 includes perforations 825 that allow condensate to pass from sterilization cabinet 105 through filter door 820. Filter door 820 may be formed with a handle 830 that is held in place by handle bracket 835. Handle 830 allows a user to easily remove filter door 820 (described below) to provide access to filter 815 so that filter 815 can be changed to suit needs. Filter 815 may be changed by removing filter door 820 by unscrewing handle 830 from underneath handle bracket 835.

[0115] One or more gaskets (not shown) may be positioned against one or more sides of filter 815 (e.g., between filter door 820 and filter 815 and / or between filter 815 and grill plate / screen floor 810) to form a seal that prevents the passage of microbial contamination.

[0116] In addition to the above, it has also been found advantageous to configure the sterilization cabinet 105 with a modified filter port 900 (FIG. 36) located in the side wall 126 of the sterilization cabinet 105 (instead of, or in addition to, other locations) to improve vapor transmission and improve the airflow mass ratio. The filter port 900 may be configured as a circular portal in a panel of the sterilization cabinet 105. The filter port 900 is covered with a circular plate 905 which allows for a single attachment point 910 (e.g., the center of the circle) and uniform compression of the filter gasket (discussed more specifically below).

[0117] The filter port 900 comprises a filter 915 and a plate 905 with perforations 920, the filter 915 and plate 905 being mounted either on the outside of the sterilization cabinet 105 or on the inside of the sterilization cabinet 105, with the perforations formed in the side of the sterilization cabinet 105. The perforations 920 allow steam to enter and exit the sterilization cabinet 105. One or more filters 915 are positioned intermediate the circular plate 905 and the cabinet 105 to prevent the passage of microbial contaminants.

[0118] Circular plate 905 includes a gasket (not shown) that creates an effective seal between plate 905 and filter 915. Plate 905 may also include a twist handle (not shown) that locks plate 905 in place and allows for easy removal should filter 915 need to be replaced.

[0119] In a preferred embodiment of the present invention, filter 915 is disposed between plate 905 and an outer side panel of sterilization cabinet 105 such that filter 915 is accessible from outside sterilization cabinet 105. In another preferred embodiment of the present invention, filter 915 is disposed between plate 905 and an inner side panel of sterilization cabinet 105 such that filter 915 is accessible from inside sterilization cabinet 105 to further protect the filter. Filter port 900 may also include a cover (not shown) to prevent damage during transport.

[0120] The filter port 900 and its components are more in line with other rigid container designs on the market, allowing for intuitive crossover and favorable manufacturing processes. (Variation)

[0121] Numerous additional changes may be made by those skilled in the art to the details, materials, steps, and arrangements of parts that have been described and illustrated herein to explain the nature of the invention, yet still fall within the principles and scope of the invention.

Claims

1. 1. A method for sterilizing and storing a medical device, comprising: The sterilization cabinet is a sterilization cabinet comprising a cabinet bottom, a cabinet top, two cabinet side walls, a cabinet back wall, and a door configured to define an interior chamber, the interior chamber sized to accommodate a plurality of medical instruments and devices therein, the cabinet bottom defining a sloped floor configured to direct liquids within the interior chamber by gravity to a lowest point on the cabinet bottom; a plurality of vents formed in the cabinet, the plurality of vents configured to allow fluid flow therethrough during a sterilization process, the sterilization cabinet being configured to be moved into an autoclave for the sterilization process; one or more filters individually positioned over the plurality of vents; at least one drain outlet having a recess formed in the bottom of the sloped floor; a filter door disposed over the recess and having a plurality of perforations; and placing a plurality of medical instruments and devices into the sterilization cabinet and placing the sterilization cabinet in an autoclave; running a sterilization cycle with the autoclave while the sterilization cabinet is within the autoclave; at the end of the sterilization cycle, moving the sterilization cabinet to a storage location using a mobile cart to maintain the sterility of the plurality of medical instruments and devices; delivering the plurality of medical instruments and devices to a location where a medical procedure will be performed; A method for sterilizing and storing medical devices, including:

2. The mobile cart includes: an upper platform for receiving the sterilization cabinet, the upper platform comprising a pair of transport cart tracks extending longitudinally along the upper platform, the upper platform having a detachable adapter removably connected to the upper platform and configured to be adjustable to connect the pair of transport cart tracks with the interior of an autoclave; a lower support structure supporting said upper platform and receiving said transport cart truck; The method of claim 1 , wherein the plurality of medical instruments and devices to be sterilized are placed in the autoclave.

3. 10. The method of claim 1, further comprising using the transfer cart to transport the sterilization cabinet into the autoclave.

4. The method of claim 1 , further comprising monitoring the location of the mobile cart using a global positioning system, radio frequency identification (RFID), or other location tracking device.

5. 10. The method of claim 1, further comprising placing a gasket at the interface between the filter door and the frame of the sterilization cabinet.

6. 10. The method of claim 1, further comprising identifying the contents of the sterilization cabinet using radio frequency identification (RFID).

7. The method of claim 1 , wherein the at least one drain outlet is configured to open and close in response to changes in at least one of the group consisting of temperature, pressure, and time.

8. 10. The method of claim 1, further comprising packaging the plurality of medical instruments prior to placing the plurality of medical instruments in the sterilization cabinet.

9. 10. The method of claim 1, wherein the plurality of vents are located in one of the two cabinet side walls of the sterilization cabinet.

10. 2. The method of claim 1, further comprising a screen floor disposed above the recess and below the filter door, the screen floor having a rigid platform supporting the filter between the filter door and the screen floor.

Images