U.S. patent application number 11/115767 was filed with the patent office on 2005-09-01 for single port manifold.
This patent application is currently assigned to Stryker Instruments. Invention is credited to Smit, Karen L., Wasserman, Mark.
Application Number | 20050189283 11/115767 |
Document ID | / |
Family ID | 30769977 |
Filed Date | 2005-09-01 |
United States Patent
Application |
20050189283 |
Kind Code |
A1 |
Smit, Karen L. ; et
al. |
September 1, 2005 |
Single port manifold
Abstract
A manifold assembly (12) for a medical waste collection device
(10) is provided. The manifold assembly (12) comprises a housing
(14) and a cap (16) connected to the housing (14) by a snap-fit
connection (18). The housing (14) includes a bottom (20) and a wall
(24) extending upwardly therefrom about an axis (26). A support
structure (22) is disposed on the bottom (20) of the housing (14)
to support a plurality of filters (60, 62). An intake port (58) is
disposed on the cap (16) at a tangential position relative to the
wall (24) such that the fluid and material entering the manifold
assembly (12) is directed along the wall (24) to better separate
the material from the fluid and increase the life of the filters
(60, 62).
Inventors: |
Smit, Karen L.; (Kalamazoo,
MI) ; Wasserman, Mark; (Delton, MI) |
Correspondence
Address: |
HOWARD & HOWARD ATTORNEYS, P.C.
THE PINEHURST OFFICE CENTER, SUITE #101
39400 WOODWARD AVENUE
BLOOMFIELD HILLS
MI
48304-5151
US
|
Assignee: |
Stryker Instruments
|
Family ID: |
30769977 |
Appl. No.: |
11/115767 |
Filed: |
April 27, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
11115767 |
Apr 27, 2005 |
|
|
|
10205051 |
Jul 25, 2002 |
|
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|
6902673 |
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Current U.S.
Class: |
210/335 |
Current CPC
Class: |
B01D 29/114 20130101;
A61M 1/79 20210501; B01D 29/908 20130101; B01D 29/90 20130101; B01D
29/01 20130101; B01D 2201/4084 20130101; B01D 35/30 20130101; B01D
29/58 20130101 |
Class at
Publication: |
210/335 |
International
Class: |
B01D 035/16 |
Claims
1-28. (canceled)
29. A manifold assembly for use with a medical waste collection
device to direct fluid into the medical waste collection device
while separating material from the fluid, said assembly comprising:
a manifold defining a chamber and having a bottom and a wall with a
curved section extending upwardly from said bottom about a first
axis; a first filter disposed in said chamber and spaced radially
inwardly from said curved section to define a material collection
space; an intake port in fluid communication with said chamber and
tangentially disposed relative to said curved section such that the
fluid and material entering said chamber from said intake port move
along a curved path in a centrifugal motion to separate the
material from the fluid in said material collection space; and an
outlet port in fluid communication with said chamber for directing
the fluid from said chamber to the medical waste collection
device.
30. A manifold assembly as set forth in claim 29 wherein said first
filter has a cylindrical configuration and extends from said bottom
about said first axis.
31. A manifold assembly as set forth in claim 30 including a second
filter having a cylindrical configuration concentrically disposed
about said first filter.
32. A manifold assembly as set forth in claim 29 including a
support structure disposed on said bottom and extending upwardly
from said bottom to define a filter support surface.
33. A manifold assembly as set forth in claim 32 wherein said first
filter is disposed about said filter support surface.
34. A manifold assembly as set forth in claim 33 wherein said
support structure includes a plurality of spokes extending radially
from said first axis to an outer ring to define said filter support
surface.
35. A manifold assembly as set forth in claim 34 wherein said
plurality of spokes include a plurality of inner spokes radially
extending from said first axis to an inner ring and a plurality of
outer spokes extending from said inner ring to said outer ring.
36. A manifold assembly as set forth in claim 34 including an
annular rib spaced radially outwardly from said outer ring to
define an annular groove therebetween wherein said first filter has
a first end disposed in said annular groove to seal said first end
in said bottom.
37. A manifold assembly as set forth in claim 29 wherein said
manifold comprises a manifold housing and a manifold cap connected
to said manifold housing to define said chamber therebetween.
Description
FIELD OF THE INVENTION
[0001] The subject invention relates generally to medical waste
collection devices and, more particularly, to an assembly for
filtering bodily fluids prior to being collected into the
device.
BACKGROUND OF THE INVENTION
[0002] During many surgical procedures, waste materials are
generated which must be captured and disposed of. Such waste
materials include bodily fluids which have been drained from a
patient or by-products that are produced, such as smoke from a
cauterizing procedure.
[0003] Typically, a medical waste collection device having an
intake manifold assembly in conjunction with a vacuum source is
utilized to capture the waste materials, thereby reducing or
eliminating the handling of such materials by employees and, in
turn, reducing exposure of the employees to hazardous waste
materials.
[0004] Each assembly generally includes a housing for storing the
waste material, a lid having a vacuum port connected to the vacuum
source, and a conduit extending between the patient and the
manifold assembly through which the waste material travels. In
operation, the vacuum source applies a negative pressure to the
interior of the housing in order to pull the waste material from
the patient through the conduit and into the intake manifold.
Furthermore, a filter may be disposed in the assembly to prefilter
the fluids or by-products prior to disposal.
[0005] Conventionally, such assemblies comprise many pieces, have a
complex design, and are costly to manufacture and use. Such costs
are passed on to the patient, thereby contributing to the high
costs of health care.
[0006] The present invention is aimed at solving one or more of
these disadvantages.
SUMMARY OF THE INVENTION AND ADVANTAGES
[0007] The subject invention provides a manifold assembly for use
in a medical waste collection device. The assembly includes a
manifold housing including a bottom with a support structure
disposed thereon and a wall extending upwardly from the bottom
about an axis to define an open periphery. The assembly further
includes a manifold cap for disposition on the manifold housing for
defining a chamber therebetween and a connection for connecting and
retaining the housing and cap together. A support structure having
a filter support surface is disposed above the bottom for defining
a plurality of open spaces therein.
[0008] The manifold assembly of the present invention collects and
filters waste materials produced during surgical procedures. The
assembly is easily removed, disposed of, and replaced with another
assembly, thereby reducing labor and cost. In addition, the
assembly is easily manufactured and produced at a fraction of the
cost of conventional manifold assemblies, in part due to the
elimination of separate welding requirements.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Other advantages of the present invention will be readily
appreciated as the same becomes better understood by reference to
the following detailed description when considered in connection
with the accompanying drawings wherein:
[0010] FIG. 1 is a perspective view of a waste collection device
housing the manifold assembly according to one embodiment of the
present invention;
[0011] FIG. 2 is an exploded perspective view of the manifold
assembly according to one embodiment of the present invention;
[0012] FIG. 3 is a fragmentary cross-sectional side view of the
brim on the cap of the assembly of FIG. 2;
[0013] FIG. 4 is a fragmentary cross-sectional side view of the
shoulder on the housing of the assembly of FIG. 2; and
[0014] FIG. 5 is a cross-sectional side view of the assembled
manifold assembly of FIG. 1;
[0015] FIG. 6 is a perspective view of the manifold assembly
according to another embodiment of the present invention;
[0016] FIG. 7 is an exploded perspective view of the manifold
assembly of FIG. 6; and
[0017] FIG. 8 is an exploded fragmentary view of the manifold
assembly of FIG. 6.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0018] Referring to the Figures, wherein like numerals indicate
like or corresponding parts throughout the several views, a medical
waste collection device is generally shown at 10 and includes a
manifold assembly generally indicated at 12.
[0019] The manifold assembly 12 includes a manifold housing
generally, indicated at 14, a manifold cap, generally indicated at
16, and a connection, generally indicated at 18. As shown in FIG.
2, the manifold housing 14 and the manifold cap 16 are molded as
two separate or single pieces that snap-fit together via the
connection 18. As shown in FIG. 1, the assembly 12 is removably
disposed on the device 10.
[0020] The manifold housing 14 includes a bottom 20 with a support
structure, generally indicated at 22, disposed thereon. A wall 24
extends upwardly from the bottom 20 about an axis 26 to define an
open periphery 28. As shown in FIGS. 4 and 5, the support structure
22 defines a filter support surface, generally indicated at 30,
above the bottom 20. A shoulder 32 is disposed about the exterior
of the open periphery 28. An outlet port 34 is disposed on the
bottom 20 and extends outwardly therefrom to define a passageway 36
extending into the bottom 20 for transporting waste to the device
10.
[0021] The filter support surface 30 includes an inner ring 38 and
an outer ring 40. The inner ring 38 is disposed about and spaced
from the axis 26. The outer ring 40 is spaced radially inwardly
from the wall 24 to define a groove 42 between the outer ring 40
and the wall 24.
[0022] A plurality of outer spokes 44 extend radially between the
inner and outer rings 38, 40 to define a plurality of open spaces
46 between adjacent spokes 44. Additionally, a plurality of inner
spokes 52 extend radially between the axis 26 and the inner ring
38. The inner spokes 52 are diametrically aligned in pairs to
define a cross 54 intersecting at the axis 26. Each of the pairs is
aligned diametrically with a pair of the outer spokes 44.
[0023] As shown in FIG. 2, the support structure 22 and the bottom
20 are molded with the housing 14 as a one-piece structure. It is
to be understood that the support structure 22 and the bottom 20
may each be molded as a separate piece which is mated with the
housing 14.
[0024] The manifold cap 16 is disposed on the manifold housing 14
for defining a chamber 56 therebetween into which the passageway 36
extends. The cap 16 includes a top 64 and a skirt 66 extending from
the top 64 to a lower edge 68. The cap 16 further includes an
intake port 58 disposed on the cap 16 for receiving waste materials
generated during a surgical procedure which proceed into the
chamber 56, through the passageway 36 and into the device 10. As
shown in FIG. 1, the inlet port 58 may be oriented on the cap 16
such that it is normal to the orientation of the outlet port 34 on
the housing 14. However, it is to be understood that the inlet port
58 may be disposed on the cap 16 such that it is oriented parallel
with orientation of the outlet port 34 on the housing 14.
[0025] A primary filter 60 is disposed in the chamber 56 and is
supported on the support structure 22 for filtering the waste
materials and allowing waste to flow through the open spaces 46
defined by the spokes 44, 52 and out through the outlet port 34. A
secondary filter 62 is disposed in the chamber 56 over the primary
filter 60. The filters 60, 62 maintain their position over the
support structure 22 as they fit inside of and are secured in place
by the manifold cap 16. This configuration insures that the waste
materials passing through the manifold assembly 12 also pass
through the filters 60, 62.
[0026] Referring to FIGS. 3 through 5, the connection 18 connects
the housing 14 and cap 16 and retains them together. The connection
18 includes the shoulder 32 disposed on the exterior of the wall 24
about the open periphery 28 and a brim 74 disposed about the
exterior of the skirt 66 and extending over and in spaced
relationship to the ribs 70, 72. A lip 76 is disposed on the
interior of the brim 74 for snapping over the shoulder 32 and
retaining the housing 14 and cap 16 together. However, the
connection 18 may be a molded hinge between the cap 16 and housing
14.
[0027] In one embodiment, the bottom 20 is conical and is disposed
below the support surface 30. In addition, the wall 24 of the
housing 14 and the skirt 66 are annular. The outer spokes 44 each
include a polygonal web 48. Each web 48 extends axially downwardly
from the filter support surface 30 to the conical bottom 20. Each
web 48 further extends radially between the outer ring 40 and the
passageway 36 and radially outwardly to the outer ring 40 and have
radially inner edges 50 aligned with the passageway 36.
[0028] The lower edge 68 of the skirt 66 extends downwardly and is
received in the groove 42. A plurality (three) of axially extending
alignment ribs 70 are disposed on the exterior of the skirt 66 for
engaging the interior of the wall 24 of the housing 14 and aligning
the housing 14 and the cap 16 together. The alignment ribs 70
insure that the cap 16 is received properly within the housing 14
so that the lower edge 68 of the skirt 66 is correctly aligned with
the groove 42 to compress the perimeter of each filter and secure
the filters 60, 62 in place.
[0029] Additionally, a plurality (thirty-three) of axially
extending sealing ribs 72 are disposed on the exterior of the skirt
66 for engaging the interior of the wall 24 of the housing 14 to
provide a wedge fit. The brim 74 extends over and in spaced
relationship to the ribs 70, 72, and the sealing ribs 72 seal the
cap 16 within the housing 14 so that the manifold assembly 12 is
water tight and remains water tight.
[0030] In another embodiment, as shown in FIGS. 6 through 8, the
filter support surface 30 extends upwardly from the bottom 20 for
defining the plurality of open spaces 46. The primary and secondary
filters 70, 72 are cylindrical and disposed over the upwardly
extending support surface 30.
[0031] The intake port 58 is disposed on the cap 16 tangent to the
wall 24 for receiving waste and forcing the waste against a first
inner surface 75A of the housing 14 and a second inner surface 75B
of the cap 16. The waste enters the chamber 56 and swirls inside
the housing 14, thereby forcing the waste against the inner
surfaces 75A, 75B to keep the filters 70, 72 clean longer.
[0032] An annular rib 76 is disposed in the groove 42 and spaced
radially between the wall 24 and the outer ring 40 to define an
inner groove 78 for receiving an end 80 of the primary filter 70. A
plurality of engagement ribs 82 are disposed on an inner surface 84
of the cap 16 and extend outwardly therefrom into the chamber 56
for engaging the filters 70, 72. The engagement ribs 82 press the
filters 70, 72 against the bottom 20 of the housing 14 to seal the
filters 70, 72 within the annular rib 76 and prevent waste from
passing beneath the filters 70, 72 and traveling to the outlet port
34.
[0033] The foregoing detailed description shows the preferred
embodiments of the present invention are well suited to fulfill the
objectives of the invention. It is recognized that those skilled in
the art may make various modifications or additions to the
preferred embodiments chosen herein to illustrate the present
invention, without departing from the spirit of the present
invention. Accordingly, it is to be understood that the subject
matter sought to be afforded protection should be deemed to extend
to the subject matter defined in the appended claims, including all
equivalents thereof.
* * * * *