Wash chamber for automated appendage-washing apparatus

• US 7,993,471 B2
• Filed: 12/08/2008
• Issued: 08/09/2011
• Est. Priority Date: 10/31/2006
• Status: Active Grant

• Current Assignee: Meritech Systems, LLC
• Original Assignee: Resurgent Health & Medical LLC
• Inventors: Barnhill, Paul R., Johannsen, Thomas M.
• Primary Examiner(s): Barr; Michael
• Assistant Examiner(s): Chaudhry; Saeed T
• Application Number:
  US12/330,111
• Publication Number:
  US 20090094814A1
• Time in Patent Office: 974 Days
• Field of Search: 134/119, 134/181, 134/182, 134/199, 134/201, 134/32, 134/33, 134/34, 134/95.3, 134/103.3, 134/117, 134/183, 239/141, 239/596, 239/597, 604/289
• US Class Current: 134/34
• CPC Class Codes: A47K 2210/00 Combinations of water taps, soap dispensers and hand dryers
• CPC Class Codes: A47K 7/04 Mechanical washing or cleaning devices, hand or mechanically, i.e. power operated
• CPC Class Codes: A61B 90/80 Implements for cleaning or washing the skin of surgeons or patients
• CPC Class Codes: A61H 2205/065 Hands
• CPC Class Codes: A61H 35/00 Baths for specific parts of the body electric circuits therefor A61H33/005; specific components therefor A61H33/60
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61L 2/24 Apparatus using programmed or automatic operation
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/4984 Retaining clearance for motion between assembled parts
• CPC Class Codes: Y10T 29/53 Means to assemble or disassemble

Abstract

A wash cylinder or chamber for an automated cleaning station to clean an object or a person'"'"'s body part includes nozzles on the interior of the cylinder, the nozzles of one embodiment comprising an increasing roll angle providing a novel spray pattern. Additionally, embodiments of the invention include fluid guidance and conveyance structures, angled nozzles, sealing structures, finger guards, wash chamber seating mechanisms and drains, and nozzle ribs that prevent the nozzle from being dislodged during the operation of the cleaning station Also disclosed are methods of washing an object or body part using a wash cylinder or chamber and methods of assembling a wash cylinder or chamber.

Claims

1. A cleaning station comprising:

a body;

a rotatable wash chamber associated with the body, the wash chamber including an inner member and an outer member, the wash chamber including a first end and a second end, the wash chamber including an axis of rotation;

an appendage receiving cavity located within the inner member, the appendage receiving cavity adapted for being accessible by at least a portion of at least one appendage of a person through an opening in the first end of the wash chamber;

an annular cavity located between the inner member and the outer member, the inner member including a first surface and a second surface, the first surface facing the appendage receiving cavity and the second surface facing the annular cavity; and

a plurality of nozzles disposed on the inner member, the plurality of nozzles adapted to receive at least one fluid from the annular cavity and to project the at least one fluid into the appendage receiving cavity, wherein at least one nozzle of said plurality of nozzles includes at least one rib on an inlet side of the at least one nozzle of said plurality of nozzles, the at least one rib being adapted to engage a surface of an inner wall of the outer member to maintain a portion of the at least one nozzle of said plurality of nozzles in a selected position and at least prevent the at least one nozzle of said plurality of nozzles from being dislodged from the selected position during the operation of the automated cleaning station

whereby during operation of the wash chamber, the at least one fluid flows in from a fluid inlet to the annular cavity, into the annular cavity, and through the plurality of nozzles into the appendage receiving cavity.

2. The cleaning station of claim 1, wherein:

the outer member includes a cylinder portion and a frusto-conical portion, the frusto-conical portion including a flat surface and a sloped surface, the flat surface including the fluid inlet;

the inner member includes a cylinder portion and a frusto-conical portion, the frusto-conical portion including a flat surface and a sloped surface; and

wherein the outer member and the inner member are separate components that interconnect with each other to form the wash chamber.

3. The cleaning station of claim 1, wherein the plurality of nozzles comprise:

a first set of nozzles disposed on the inner member in a formation and proximate to the first end of the wash chamber;

a second set of nozzles disposed on the inner member in a helical pattern along a length of a cylinder portion of the inner member; and

a third set of nozzles disposed on a frusto-conical portion of the inner member, wherein each nozzle of the third set of nozzles includes the at least one rib.

4. The cleaning station of claim 1, wherein the annular cavity has a thickness of between one sixteenth of an inch and one eighth of an inch.

5. The cleaning station of claim 1, wherein the fluid inlet includes a tubular portion extending from the outer member, the tubular portion being adapted to be received in a seating mechanism disposed on the automated cleaning station.

6. A method of using an automated cleaning station, comprising:

initiating a flow of a first cleaning fluid through a fluid inlet disposed on a wash chamber of the automated cleaning station, the wash chamber including an inner member and an outer member, the wash chamber including a first end and a second end, at least one of the first end and the second end connected to the automated cleaning station, the wash chamber including an axis of rotation, the wash chamber including an appendage receiving cavity and an annular cavity, the appendage receiving cavity being located within the inner member, the appendage receiving cavity being accessible through an opening in the first end of the wash chamber and being adapted to receive at least a portion of at least one appendage of a person for washing, the annular cavity being located between the inner member and the outer member, the inner member including a first surface and a second surface, the first surface facing the appendage receiving cavity and the second surface facing the annular cavity; and

projecting the first cleaning fluid from the annular cavity, at different angles relative to a longitudinal axis of the wash chamber, through a plurality of nozzles and into the appendage receiving cavity, the plurality of nozzles being disposed on the inner member, wherein at least one nozzle of said plurality of nozzles includes at least one rib on an inlet side of the at least one nozzle of the plurality of nozzles, the at least one rib being adapted to engage a surface of an inner wall of the outer member to maintain a selected position of the at least one nozzle of the plurality of nozzles and at least prevent the at least one nozzle of the plurality of nozzles from being dislodged from the selected position during the operation of the automated cleaning station;

whereby the wash chamber is rotated about the axis of rotation at least during the step of projecting the first cleaning fluid.

7. The method of claim 6, wherein:

the outer member includes a cylinder portion and a frusto-conical portion, the frusto-conical portion including a flat surface and a sloped surface, the flat surface including the fluid inlet;

the inner member includes a cylinder portion and a frusto-conical portion, the frusto-conical portion including a flat surface and a sloped surface, the inner member further including a fluid guidance structure being disposed on the flat surface of the inner member; and

wherein the outer member and the inner member are separate components that interconnect with each other to form the wash chamber.

8. The method of claim 6, wherein the plurality of nozzles comprise:

a first set of nozzles disposed on the inner member in a formation and proximate to the first end of the wash chamber of the wash chamber to project the first cleaning fluid at a first angle relative to the longitudinal axis;

a second set of nozzles disposed on the inner member in a helical pattern along a length of the cylinder portion of the inner member to project the first cleaning fluid at a first angle relative to the longitudinal axis;

a third set of nozzles disposed on the frusto-conical portion of the inner member to project the first cleaning fluid at a first angle relative to the longitudinal axis.

9. The method of claim 6, further comprising contacting a second fluid with the at least a portion of at least one appendage of a person located within the wash chamber.

10. The method of claim 9, wherein one of the first fluid and the second fluid comprises water, and wherein one of the first fluid and the second fluid comprises at least one of a soap and a disinfectant.