Removable inlet manifold for a medical/surgical waste collection system, the manifold include a backflow prevention valve that seats on a portion of the manifold

• US 8,518,002 B2
• Filed: 05/30/2012
• Issued: 08/27/2013
• Est. Priority Date: 12/14/2005
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Stryker Corporation
• Inventors: Murray, Sean A., Hershberger, David, Lalomia, Brent S., Reasoner, Stephen, Isham, Stephen
• Primary Examiner(s): BASS, DIRK R
• Application Number:
  US13/483,084
• Publication Number:
  US 20120238975A1
• Time in Patent Office: 454 Days
• Field of Search: None
• US Class Current: 604/319
• CPC Class Codes: A61B 18/148 having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy
• CPC Class Codes: A61B 2050/185 Drawers
• CPC Class Codes: A61B 50/10 Furniture specially adapted for surgical or diagnostic appliances or instruments
• CPC Class Codes: A61B 50/13 Trolleys, e.g. carts
• CPC Class Codes: A61B 50/36 for collecting or disposing of used articles
• CPC Class Codes: A61B 50/362 for sharps
• 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 1/63 with means for emptying the suction container, e.g. by interrupting suction
• CPC Class Codes: A61M 1/631 Emptying the suction container without interrupting suction
• CPC Class Codes: A61M 1/71 Suction drainage systems containers therefor A61M1/60, A61M1/64; negative pressure wound therapy systems A61M1/90
• CPC Class Codes: A61M 1/72 Cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 1/732 Visual indicating means for vacuum pressure
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• CPC Class Codes: A61M 1/742 by changing the size of a vent A61M1/7411 takes precedence
• CPC Class Codes: A61M 1/743 by changing the cross-section of the line, e.g. flow regulating valves A61M1/7413 takes precedence
• CPC Class Codes: A61M 1/76 Handpieces specially for suction-irrigation A61M1/774, aspiration tips A61M1/84
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• 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 1/782 using valves with freely moving parts, e.g. float valves
• CPC Class Codes: A61M 1/784 by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
• CPC Class Codes: A61M 1/79 : Filters for solid matter specially adapted for dental use A61C17/065
• CPC Class Codes: A61M 1/84 : Drainage tubes; Aspiration tips for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32
• CPC Class Codes: A61M 1/92 : with liquid supply means
• CPC Class Codes: A61M 2205/125 : with incorporated filters
• CPC Class Codes: A61M 2205/3331 : Pressure; Flow
• CPC Class Codes: A61M 2205/7545 : for solid matter, e.g. microaggregates
• CPC Class Codes: A61M 2205/7563 : with means preventing clogging of filters
• CPC Class Codes: A61M 3/0201 : Cassettes therefor
• CPC Class Codes: Y10T 137/87571 : Multiple inlet with single outlet
• CPC Class Codes: Y10T 137/87676 : With flow control
• CPC Class Codes: Y10T 137/87965 : Valve- or closure-operated by coupling motion

Abstract

A removable manifold for a medical/surgical waste collection system. The manifold is dimensioned to be mounted to a receiver integral with the system. The manifold includes a includes at least one fitting through which waste is drawn into the manifold. The fitting opens through an inlet port into a void space internal to the manifold. A backflow prevention valve is disposed in the manifold void space. The backflow prevention valve includes a static hub to which a driver for engaging a complementary valve internal to the receiver. The valve regulates flow between the receiver and the down line components of the waste collection system. The valve is normally closed. When the manifold is fitted to the receiver the driver engages the valve so as move the valve to the open position. This allows fluid flow from the manifold and receiver to the downstream components of the system.

Claims

1. A manifold for connection to a medical/surgical waste collection unit, the waste collection unit having a receiver for receiving the manifold, said manifold comprising:

a housing having;

opposed spaced apart distal and proximal ends;

a void space between the ends, the void space being at least partially defined by an inner face adjacent the distal end, the inner face having at least one inlet port into the void space adjacent the distal end of the housing;

a rib that extends outwardly from the inner face and that extends circumferentially around the inlet port; and

an outlet opening from the void space in the proximal end;

at least one fitting attached to the housing that extends away from the housing, the fitting dimensioned to receive a suction line and opening into the at least one housing inlet port; and

a backflow prevention valve disposed in said housing, said backflow prevention valve including;

a hub that is statically mounted to said housing void space-defining inner face so as to be spaced from the at least one inlet port and said rib that extends around said inlet port;

a valve member, said valve member positioned and dimensioned to extend over the at least one inlet port and said rib that surrounds the inlet port; and

a hinge that extends from said hub to said valve member that pivotally connects said valve member to said hub so that said valve member can pivot between a closed position in which said valve member is rotated away from both said rib and the inlet port to allow fluid flow from said fitting and the inlet port into the housing void space.

2. The manifold of claim 1, wherein said backflow valve hub, said hinge and said valve member are formed from a single piece of flexible material.

3. The manifold of claim 1, wherein said backflow valve hub is held against the inner face of said housing by a head piece disposed in the housing void space.

4. The manifold of claim 1, further including a filter disposed in the housing void space between the inlet port and the outlet opening.

5. The manifold of claim 1, wherein:

a longitudinal axis extends from the distal end of the housing, through the housing void space to the proximal end of the housing; and

said housing is formed with a drive feature positioned to engage with and displace a valve driver associated with the receiver in which said housing is inserted, said drive feature being positioned to be rotated as a consequence of the rotation of said housing around the housing longitudinal axis.

6. The manifold of claim 1, wherein:

a longitudinal axis extends from the distal end of the housing, through the housing void space to the proximal end of the housing; and

said outlet opening is formed in the proximal end of the housing so as to be centered on an axis that is spaced away from the longitudinal axis of the housing.

7. The manifold of claim 1, further including a drip stop fitted in the outlet opening of said housing.

8. The manifold of claim 1, wherein the inner face of the housing that defines the at least one inlet opening and from which the rib extends defines the distal end of the housing void space.

9. The manifold of claim 3, wherein a structural member integrally formed with said head piece extends from said head piece to said housing so as to hold said head piece to said housing.

10. A manifold for connection to a medical/surgical waste collection unit, the waste collection unit having a receiver for receiving the manifold, said manifold comprising:

a housing having;

opposed spaced apart distal and proximal ends;

a void space between the ends, the void space being at least partially defined by an inner face adjacent the distal end;

at least one inlet port formed in the inner face that opens into the void space adjacent the distal end of the housing;

a rib that extends outwardly from the inner face and that extends circumferentially around the inlet port; and

an outlet opening from the void space in the proximal end;

at least one fitting attached to the housing that extends away from the housing, the fitting dimensioned to receive a suction line and positioned to open into the at least one housing inlet port; and

a backflow prevention valve disposed in said housing, said backflow prevention valve being formed from a single piece of flexible material that includes;

a hub that is statically disposed against the housing inner face so as to be spaced from the inlet port and said surrounding rib;

a valve member, said valve member positioned and dimensioned to extend over the at least one inlet port and said rib; and

a hinge that extends from said valve member that pivotally connects said valve member to said hub so that said valve member is able to pivot between a closed position in which said valve member abuts said rib and is disposed over said at least one inlet port so as to block fluid flow from the housing void space through the inlet port into said fitting and an open position in which said valve member is rotated away from both said ring and the inlet port to allow fluid flow from said fitting and the inlet port into the housing void space.

11. The manifold of claim 10, wherein said hub, said hinge and said valve member each having a cross-sectional thickness, the thickness of said hinge being less than the cross sectional thicknesses of said hub and said valve member.

12. The manifold of claim 10, wherein said backflow prevention valve is held against the inner face of said housing by a head piece disposed in the housing void space.

13. The manifold of claim 10, further including a filter disposed in the housing void space between the inlet port and the outlet opening.

14. The manifold of claim 10, wherein:

a longitudinal axis extends from the distal end of the housing, through the housing void space to the proximal end of the housing; and

said housing is formed with a drive feature positioned to engage with and displace a valve driver associated with the receiver in which said housing is inserted, said drive feature being positioned to be rotated as a consequence of the rotation of said housing around the housing longitudinal axis.

15. The manifold of claim 10, wherein:

said housing is formed so that there are a plurality of inlet ports in the inner face of the housing adjacent the distal end of the housing and a said rib extends outwardly from the housing inner face circumferentially around each inlet port;

a plurality of said fittings are attached to said housing and a said fitting extends to a separate one of the inlet ports; and

said backflow prevention valve is formed so that a plurality of valve members extend from said hub, each said valve member being positioned to extend over a separate one of the inlet openings and being connected to said hub by a hinge such that each said valve member can move between the closed and open positions.

16. The manifold of claim 12, wherein a structural member integrally formed with said head piece extends from said head piece to said housing so as to hold said head piece to said housing.

17. A manifold for connection to a medical/surgical waste collection unit, the waste collection unit having a receiver for receiving the manifold, said manifold comprising:

a housing having;

opposed spaced apart distal and proximal ends;

a void space between the ends, the void space being at least partially defined by an inner face adjacent the distal end;

at least one inlet port formed in the inner face that opens into the void space adjacent the distal end of the housing;

a rib that extends outwardly from the inner face and that extends circumferentially around the inlet port; and

an outlet opening from the void space in the proximal end;

at least one fitting attached to the housing that extends away from the housing, the fitting dimensioned to receive a suction line and positioned to open into the at least one housing inlet port; and

a backflow prevention valve disposed in said housing, said backflow prevention valve including;

a hub located adjacent the housing inner face adjacent the inlet port;

a head piece disposed in the housing void space adjacent said valve hub, said head piece being secured to said housing so as to hold said hub in a static position and a valve member that is pivotally connected to and extends from said hub, said valve member positioned and dimensioned to extend over the at least one inlet port and to abut said rib that surrounds the port.

18. The manifold of claim 17, wherein:

the valve hub is formed with an opening; and

at least one ear formed integrally with said head piece extends from said head piece through the valve hub opening to hold said head piece to said housing.

19. The manifold of claim 17, wherein said head piece is part of a filter disposed in the housing void space between the at least one inlet port and the outlet opening.

20. The manifold of claim 17, further including a filter disposed in the housing void space between the at least one inlet port and the outlet opening.

21. The manifold of claim 17, wherein said valve hub and said valve member are a single-piece component.

22. The manifold of claim 17, wherein said valve hub is disposed against the inner face of said housing.

23. The manifold of claim 17, wherein said head piece is disposed against said valve hub.

24. The manifold of claim 17, wherein

said valve hub is formed from compressible material and is formed to have a center opening;

an annular rib extends outwardly from an outer surface of said hub so as to surround the center opening, said hub positioned so that said annular rib is directed towards the inner face of said housing; and

a structural member extends from said housing through the hub center opening to said head piece so as to hold said head piece against said hub such that when said head piece is secured to said housing, said head piece presses said hub against the inner face of said housing so as to result in the compression of said annular rib between said valve hub and the inner face of said housing.

25. The manifold of claim 17, wherein

said valve hub is formed from compressible material and is formed to have a center opening;

an annular rib extends outwardly from an outer surface of said hub so as to surround the center opening, said hub positioned so that said annular rib is directed towards said head piece; and

a structural member extends from said housing through the hub center opening to said head piece so as to hold said head piece against said hub such that when said head piece is secured to said housing, said head piece presses against said rib so as to result in the compression of said rib between said head piece and said valve hub.