Medical waste fluid collection and disposal system

• US 8,292,857 B2
• Filed: 10/06/2008
• Issued: 10/23/2012
• Est. Priority Date: 10/04/2007
• Status: Active Grant

• Current Assignee: Dornoch Medical Systems Inc. (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Dornoch Medical Systems Inc. (Zimmer Biomet Holdings, Inc.)
• Inventors: Martini, Anthony, Guerra, Lawrence
• Primary Examiner(s): Kidwell, Michele M.
• Assistant Examiner(s): Treyger, Ilya
• Application Number:
  US12/245,966
• Publication Number:
  US 20090101219A1
• Time in Patent Office: 1,478 Days
• Field of Search: 604/317, 604/318, 604/322, 604/326
• US Class Current: 604/317
• CPC Class Codes: A61M 1/60 Containers for suction drainage, adapted to be used with an external suction source containers not adapted for subjection to vacuum A61M1/69
• CPC Class Codes: A61M 1/78 Means for preventing overflow or contamination of the pumping systems combined with drainage containers A61M1/60
• CPC Class Codes: A61M 1/784 by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
• CPC Class Codes: A61M 2209/08 Supports for equipment
• CPC Class Codes: B08B 9/08 Cleaning containers, e.g. tanks
• CPC Class Codes: Y10T 137/3109 Liquid filling by evacuating container
• CPC Class Codes: Y10T 137/4238 With cleaner, lubrication added to fluid or liquid sealing at valve interface
• CPC Class Codes: Y10T 137/86099 Hand pump
• CPC Class Codes: Y10T 137/86131 Plural

Abstract

A medical waste fluid collection and disposal system includes a medical waste fluid collection cart including first and second fluid collection canisters. A valve assembly selectively communicates with the canisters and a valve drive system controls the valve assembly. A liquid level sensor is positioned within each of the canisters. A cart processor communicates with the liquid level sensors and the valve drive system. A cart drain line communicates with the valve assembly and a receptacle, a cart flushing line communicates with the valve assembly and the receptacle and a cart data line and a cart power line communicate with the cart processor and the cart receptacle. A station includes a drain pump that communicates with a drainage system and a station drain line, a flushing pump that communicates with a source of washing liquid and a station flushing line and a station processor in communication with the drain and flushing pumps. A station data line communicates with the station processor. A coupler communicates with the station drain line, flushing line and the station data line and a station power line. The station coupler removably engages the cart receptacle so operation of the cart and station components can be coordinated by the processors for drainage and flushing of the cart canisters.

Claims

1. A medical waste fluid collection cart comprising:

a) a first fluid collection canister and a second fluid collection canister;

b) a valve assembly including a wash valve and a waste valve in communication with the first and second fluid collection canisters with the wash valve adapted to communicate with a source of washing liquid, and the waste valve adapted to communicate with a drain so that said wash valve is configured to place either the first fluid collection canister or the second fluid collection canister in communication with the source of washing liquid and the waste valve is configured to place either the first collection canister or the second fluid collection canister in communication with the drain;

c) a valve drive system in communication with said valve assembly;

d) a first liquid level sensor positioned within said first fluid collection canister and a second liquid level sensor positioned within said second fluid collection canister;

and

e) a processor in communication with the first and second liquid level sensors and the valve drive system, said processor configuring the valve assembly via the valve drive system for draining and flushing the first fluid collection canister only when the first liquid level sensor initially detects waste liquid in the first fluid collection canister, draining and flushing the second fluid collection canister only when the second liquid level sensor initially detects waste liquid in the second fluid collection canister and fluid collection for a medical procedure when both the first and second fluid collection canisters are empty of liquid.

2. The cart of claim 1 further comprising a vacuum pump in communication with the processor, said vacuum pump capable of being activated when the valve assembly is configured by the processor for fluid collection for a medical procedure.

3. The cart of claim 2 wherein said vacuum pump is a variable speed vacuum pump and further comprising a vacuum line communicating with the vacuum pump and the first and second fluid collection canisters and a pressure sensor positioned within the vacuum line, said pressure communicating with the processor so that said processor controls the vacuum pump speed based on pressure within the vacuum line.

4. The cart of claim 2 further comprising an exhaust line in communication with an outlet of the vacuum pump and a filter.

5. The cart of claim 1 further comprising lights positioned adjacent said first and second fluid collection canisters, said lights illuminating the first and second fluid collection canisters so that the liquid levels therein may be observed.

6. The cart of claim 5 wherein the lights include light-emitting diodes.

7. The cart of claim 5 wherein the'"'"'lights communicate with and are controlled by the processor and are automatically illuminated for a canister that is being used for fluid collection.

8. The cart of claim 1 further comprising a touch screen in communication with the processor and permitting an operator to control operation of the cart via the touch screen.

9. The cart of claim 8 wherein said touch screen provides a visual indication to the operator that at least one of the fluid collection canisters is nearly full.

10. The cart of claim 1 further comprising an audio device in communication with the processor, said audio device providing an audible indication to the operator that at least one of the fluid collection canisters is nearly full.

11. The cart of claim 1 wherein said valve drive assembly includes a gear train connected to said valve assembly and an electric drive motor connected to said gear train and said processor.

12. The cart of claim 11 wherein the electric drive motor is connected to said gear train by a worm gear.

13. The cart of claim 11 wherein the electric drive motor is connected to said gear train by a drive chain and sprockets that are engaged by said drive chain.

14. The cart of claim 1 wherein the first and second liquid level sensors are magnorestrictive transducers.

15. The cart of claim 1, wherein the valve assembly further includes vent valve adapted to communicate with a vent and in communication with the first fluid collection canister and the second fluid collection canister so that said vent valve is configured by the processor to place either the first fluid collection canister or the second fluid collection canister in communication with the vent as the first fluid collection canister or the second fluid collection canister are being drained and flushed, respectively.

16. The cart of claim 15 further comprising a gas collector in communication with the vent valve.

17. The cart of claim 15 further comprising a washing liquid supply line in communication with the wash valve and a receptacle and a washing drain line in communication with the drain valve and the receptacle, said receptacle adapted to communicate with the source of liquid and the drain.

18. The cart of claim 1 further comprising cleaning nozzles positioned within said first and second fluid collection canisters, said cleaning nozzles in communication with said valve assembly so that they may selectively receive washing liquid.

19. The cart of claim 18 wherein the nozzles rotate.

20. The cart of claim 1 wherein the canisters feature disposable lids having patient ports.

21. The cart of claim 1 wherein the canisters are constructed of acrylic and include a fluorinated coating.

22. The cart of claim 1 further comprising:

f) a top plate;

g) a bottom plate;

h) first and second cylinders positioned between the top and bottom plate, said first and second cylinders cooperating with the top and bottom plates to define the first and second fluid collection canisters.

23. The cart of claim 22 wherein said first, and second cylinders are constructed of acrylic and include a fluorinated coating.

24. The cart of claim 22 further comprising a cabinet positioned beneath said bottom plate, said cabinet housing the valve assembly and valve drive system.

25. The cart of clam 24 further comprising casters positioned on a bottom portion of said cabinet housing and wherein said top plate features a handle.

26. A medical waste fluid collection cart comprising:

a) a first fluid collection canister and a second fluid collection canister

b) a valve assembly selectively in communication with the first and second fluid collection canisters and adapted to communicate with a source of washing liquid, a drain and a vacuum source;

c) a valve drive system in communication with said valve assembly;

d) a first liquid level sensor positioned within said first fluid collection canister and a second liquid level sensor positioned within said second fluid collection canister;

e) a processor in communication with the first and second liquid level sensors and the valve drive system, said processor configuring the valve assembly via the valve drive system for fluid collection during a medical procedure, draining and flushing based on the liquid levels in the first and second fluid collection canisters detected by the first and second liquid level sensors;

f) a top plate featuring first and second circular openings;

g) a bottom plate;

h) first and second cylinders positioned between the top and bottom plate, said first and second cylinders cooperating with the top and bottom plates to define the first and second fluid collection canisters; and

i) first and second cart lid ring assemblies positioned within said first and second circular openings of the top plate, respectively, each of said first and second cart lid ring assemblies including;

i. a cart lid ring engaging one of the first and second circular openings of the cart top plate, said cart lid ring featuring a central opening and a circumferential lip portion;

ii. a lid alignment member positioned within the central opening of the cart lid ring, said lid alignment member including a lid alignment spud;

iii. a lid removably engaging the lip portion of the cart lid ring;

said lid featuring a port that, when engaged by the lid alignment spud of the lid alignment member, is properly positioned on the cart lid ring.

27. The cart of claim 26 wherein each cart lid ring assembly further includes:

iv. a lower O-ring positioned between the cart lid ring and the top plate of the cart; and

v. an upper O-ring positioned between the cart lid ring and the lid alignment member.

28. The cart of claim 26 wherein each cart lid ring assembly further includes a dowel pin positioned between the cart lid-ring and the lid alignment member.