Medical waste handling system

• US 5,242,434 A
• Filed: 12/20/1990
• Issued: 09/07/1993
• Est. Priority Date: 12/20/1990
• Status: Expired due to Term

• Current Assignee: American Sterilizer Company (Steris Corporation)
• Original Assignee: Medical & Environmental Designs, Inc. (Steris Corporation)
• Inventors: Terry, William M.
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): GUALTIERI, GINA
• Application Number:
  US07/630,516
• Time in Patent Office: 992 Days
• Field of Search: 604/317, 604/318, 604/322, 604/326, 604/4, 604/5, 604/6
• US Class Current: 604/317
• CPC Class Codes: A61L 11/00 Methods specially adapted for refuse disintegrating medical waste B02C19/0075; disposal of medical waste B09B3/00
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61M 1/65 the suction means being electrically actuated
• CPC Class Codes: A61M 1/782 using valves with freely moving parts, e.g. float valves
• CPC Class Codes: A61M 1/882 Draining devices provided with means for releasing antimicrobial or gelation agents in the drained fluid
• CPC Class Codes: B09B 3/0075 Disposal of medical waste casings for used articles, e.g. sharps A61B50/362; sterilisation of refuse A61L11/00; disposal of used needles or syringes A61M5/3205; disintegrating medical waste B02C19/0075

Abstract

An apparatus for collecting, disinfecting and disposing of body waste materials accumulated from a patient including a pair of adjacent collection chambers each having an upper and a lower end, the upper and lower ends respectively being substantially at the same elevations, a first conduit connecting the lower ends of the collection chambers for communication therebetween, a set of conduits connecting the upper ends of the collection chambers, the set of conduits having a smaller cross-sectional flow capacity than the first conduit, an inlet to the first collection chamber at an intermediate location thereon, and an outlet connected to the second collection chamber at an intermediate location thereon, an inlet conduit having a first end for connection to the inlet to the first collection chamber and an opposite open end for exposing to the waste materials to be collected and a conduit for connection to a predetermined environment to establish the environment in the chamber. The present apparatus also includes a unit for connection in the apparatus for collecting, disinfecting and disposing of body waste materials including controls therefor for introducing a rinsing and flushing fluid therein and for supplying a quantity of a disinfectant into the apparatus.

Claims

1. A device for decontaminating body fluids from a patient, said device including means for collecting, disinfecting and disposing of body waste materials accumulated from a patient comprising

container means forming first and second collection chambers each having an upper and a lower end, the upper and a lower ends respectively being at substantially the same elevations,

first conduit means connecting the lower ends of the collection chambers for communication therebetween,

second conduit means connecting the upper ends of the collection chambers, said second conduit means having a substantially smaller cross sectional flow capacity than the first conduit means,

an inlet port to the container means forming the first collection chamber,

an outlet port connected to the container means forming the second collection chamber, and

an inlet conduit having a first end connected to the inlet port and an opposite open end for exposing to waste materials to be collected.

2. The device of claim 1 wherein the container means forming the first and second collection chamber include a pair of vertically oriented containers each including a side wall which si closed by upper and lower end walls.

3. The device of claim 1 including a support structure and an enclosure for supporting and housing the container means forming the collection chambers.

4. A medical waste collection system comprising:

a primary collection and waste treatment unit for decontaminating body fluids including container means forming first and second chambers each having a closed side wall and closed upper and lower end walls, the upper and lower end walls being respectively at substantially the same elevations, first conduit means connected between the upper end walls and second conduit means connected between the lower end walls of the chambers and communicating the pair of chambers thereat, the first conduit means having a substantially smaller cross sectional flow area than the second conduit means,

an inlet o the first of said chambers at an intermediate location between the upper and lower chamber end walls,

an open ended drainage conduit having one end connected with the inlet and an opposite open end of exposing to body fluids to be collected, and

another conduit having one end communicating with a predetermined environment and an opposite end communicating with the second chamber such that the predetermined environment will be present in said first and second chambers.

5. The medical waste collection system of claim 4 wherein the predetermined environment is a suction source.

6. The medical waste collection system of claim 4 wherein the predetermined environment is the ambient atmosphere.

7. The medical waste collection system of claim 4 including a supply of liquid disinfectant filling predetermined portions of the first and second chambers and the second conduit means.

8. The medical waste collection system of claim 4 including an assembly connected to the primary collection and treatment unit for rinsing, flushing and cleaning the primary collection and waste treatment unit including means for supplying a predetermined quantity of disinfectant into the first and second chambers.

9. The medical waste collection system of claim 4 including a flush connection inlet connected to communicate an upper portion of each of said first and second chambers with a source of flushing liquid, and separate normally closed solenoid operated valve means to control the flow of flushing fluid to said first and second chambers.

10. The medical waste collection system of claim 4 including a drain conduit and associated valve means connected to the second conduit means.

11. The medical waste collection system of claim 4 including a housing and support structure for enclosing and supporting the container means, and means attached to the support structure to make the structure mobile.

12. The medical waste collection system of claim 11 including gage means mounted on the housing and support structure, said gage means including a float positioned in one of said first and second chambers for floating on the fluid contained therein, rod means connected to the float and extending upwardly therefrom and means for slideably receiving the rod means including means to indicate the vertical position thereof.

13. The medical waste collection system of claim 8 wherein the rinsing, flushing and cleaning assembly includes conduit means for connection at one end to a source of rinsing and flushing fluid and having a connection at the opposite end to the collection and treatment unit to supply rinsing and flushing fluid to the first and second chambers.

14. The medical waste collection system of claim 8 wherein the rinsing, flushing and cleaning assembly includes a source of fluid disinfectant, and conduit means for supplying disinfectant fluid from said source to the first and second chambers, said last named means including means to control the depth of the liquid disinfectant supplied to the first and second chambers.

15. The medical waste collection system of claim 8 including first solenoid valve means for controlling the supply of rinsing and flushing fluid from said rinsing, flushing and cleaning assembly to the first and second chambers, and second solenoid valve means for controlling the flow of fluid from the first and second chambers to and from the second conduit means.

16. The medical waste collection system of claim 15 including electrical connection means in said rinsing, flushing and cleaning assembly to enable energizing the solenoid valves.

17. The medical waste collection system of claim 16 including means for establishing an electrical connection between the primary collection and treatment unit and the rinsing, flushing and cleaning assembly.

18. The medical waste collection system of claim 4 including second container means forming other adjacent first and second chambers each having a side wall and closed upper and lower end walls and respective first and second conduit means communicating the upper ends and the lower ends of the chambers, one of said chambers of said other adjacent first and second chambers having an inlet at an intermediate location between the upper and lower chamber ends and an open ended drainage conduit having one end connected to the inlet and an opposite end for exposing to body fluids to be collected.

19. The medical waste collection system of claim 12 including a pressure release valve means associated with the means slideably receiving the rod means, said pressure release valve means being engageable by the rod means in a predetermined position thereof to release pressure in the first and second chambers and terminate suction collection of body waste materials.

20. A device for decontaminating body fluids as they are collected form a patient comprising

a pair of adjacent containers each having closed upper and lower end arranged to be respectively at substantially the same elevations,

an inlet to one of said containers connected to one end of an inlet conduit, the opposite end of which is positioned to have body fluids enter thereat,

an outlet to the other of said containers for connection to an environment of predetermined pressure,

drain conduit means communicating the lower ends of the pair of adjacent containers,

means for supporting the pair of containers in upstanding position, and

pressure equalizing conduit means communicating the upper ends of the pair of adjacent containers, said pressure equalizing conduit means having a more restricted flow capacity than the drain conduit means.

21. A device for decontaminating body fluids as they are collected from a patient comprising

a pair of adjacent containers each having closed upper and lower ends arranged to be respectively at substantially the same elevations,

a conduit connecting the upper ends of the containers,

an inlet to one of said containers connected to one end of an inlet conduit, the opposite end of which is positioned to have body fluids enter thereat,

an outlet to the other of said containers for connection to an environment of predetermined pressure,

drain conduit means communicating the lower ends of the pair of adjacent containers,

means for supporting the pair of containers in upstanding position, and

cleaning and rinsing conduits connected to the upper ends of the pair of adjacent containers for connecting the containers to a source of cleaning and rinsing fluid, and valve means for controlling communication through the cleaning and rinsing conduits between the source of cleaning and rinsing fluid and the insides of the pair of adjacent containers.

22. A device for decontaminating body fluids as they are collected from a patient comprising

a pair of adjacent containers each having closed upper and lower ends arranged to be respectively at substantially the same elevations,

an inlet to one of said containers connected to one end of an inlet conduit, the opposite end of which is positioned to have body fluids enter thereat,

an outlet to the other of said containers for connection to an environment of predetermined pressure,

a conduit connecting the upper ends of the containers, drain conduit means communicating the lower ends of the pair of adjacent containers,

means for supporting the pair of containers in upstanding position, and

a housing for containing and supporting the pair of containers, said housing having an outlet fitting for connection to the outlet drain conduit means.

23. A device of claim 22 including means for supporting the housing on wheels.

24. A device for decontaminating body fluids as they are collected from a patient comprising

a pair of adjacent containers each having closed upper and lower ends arranged to be respectively at substantially the same elevations,

a conduit connecting the upper ends of the containers,

an inlet to one of said containers connected to one end of an inlet conduit, the opposite end of which is positioned to have body fluids enter thereat,

an outlet to the other of said containers for connection to an environment of predetermined pressure,

drain conduit means communicating the lower ends of the pair of adjacent containers,

means for supporting the pair of containers in upstanding position, and

check valve means associated with the inlet to said one container to permit flow into but not out of said one container.

25. A device for decontaminating body fluids as they are collected from a patient comprising

a pair of adjacent containers each having closed upper and lower ends arranged to be respectively at substantially the same elevations,

a conduit connecting the upper ends of the containers,

an inlet to one of said containers connected to one end of an inlet conduit, the opposite end of which is positioned to have body fluids enter thereat,

an outlet to the other of said containers for connection to an environment of predetermined pressure,

drain conduit means communicating the lower ends of the pair of adjacent containers,

means for supporting the pair of containers in upstanding position, and

a vacuum source and means connecting the vacuum source to the outlet.

26. A device for decontaminating body fluids as they are collected from a patient comprising

a pair of adjacent containers each having closed upper and lower ends arranged to be respectively at substantially the same elevations,

a conduit connecting the upper ends of the containers,

an inlet to one of said containers connected to one end of an inlet conduit, the opposite end of which is positioned to have body fluids enter thereat,

an outlet to the other of said containers for connection to an environment of predetermined pressure,

drain conduit means communicating the lower ends of the pair of adjacent containers,

means for supporting the pair of containers in upstanding position, and

means connecting the outlet to atmospheric pressure.