US5015369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembly for filtering amniotic fluid
Assignee: FARMER LORI (F/K/A LORI ROMINE)
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Filing: 1990-01-22
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Granted: 1991-05-14
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Expires: 2010-01-22
Abstract
Abstract An assembly for the removal and examination of amnioytes in early pregnancy by filtering the amniotic fluid and returning the fluid to the fetus subsequent to filtering wherein a conduit structure has a filter incorporated therein and is constructed to include two different paths of fluid flow, one for drawing off said amniotic fluid through the filter means and one for returning the amniotic fluid subsequent to filtering along a path which bypasses said filter structure.
Inventors
- 👤 Lori Romine
- 👤 Ronald Sholders
- 👤 Richard Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:29
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/30; A61M1/301; A61M1/303; A61M2202/00; A61M2202/04; A61M2202/0494
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
205 words
A filtering assembly for removing amniocytes from amniotic fluid during pregnancy, said assembly comprising: (a) a conduit structure including a first conduit section having one open end structured for connection to a syringe and having separate conduit segments both disposed in fluid communication with said open end, (b) said conduit structure further including a second conduit section removably connected to said first conduit section and including two conduit segments connected to said first conduit section, (c) said second conduit section including an open end structured for connection to a needle positioned and structured to allow fluid flow therethrough into and out of said conduit structure, (d) filter means connected in fluid communication between said first and second conduit sections for filtering out amniocytes, for examination, from said amniotic fluid, (e) said first and second conduit sections structured to define different paths of fluid flow between the syringe and the needle and into and out of said needle structure, (f) valve means mounted on said conduit structure in flow regulating relation along said different paths of fluid flow between the syringe and the needle, and (g) said filter means disposed in flow receiving relation along one of said different flow paths from the needle to syringe.
Claim 2
Dependent Claim
205 words
A filtering assembly for removing amniocytes from amniotic fluid during pregnancy, said assembly comprising: (a) a conduit structure including a first conduit section having one open end structured for connection to a syringe and having separate conduit segments both disposed in fluid communication with said open end, (b) said conduit structure further including a second conduit section removably connected to said first conduit section and including two conduit segments connected to said first conduit section, (c) said second conduit section including an open end structured for connection to a needle positioned and structured to allow fluid flow therethrough into and out of said conduit structure, (d) filter means connected in fluid communication between said first and second conduit sections for filtering out amniocytes, for examination, from said amniotic fluid, (e) said first and second conduit sections structured to define different paths of fluid flow between the syringe and the needle and into and out of said needle structure, (f) valve means mounted on said conduit structure in flow regulating relation along said different paths of fluid flow between the syringe and the needle, and (g) said filter means disposed in flow receiving relation along one of said different flow paths from the needle to syringe.
Claim 3
Dependent Claim
38 words
An assembly as in claim 1 wherein said first and second conduit sections are removably connected to one another, said filter means detachable from said second conduit section and maintained in attached relation to said first conduit section.
Claim 4
Dependent Claim
27 words
An assembly as in claim 2 wherein said valve means is mounted on said first conduit section and selectively positionable between a flow-on and a flow-off position.
Claim 5
Dependent Claim
32 words
An assembly as in claim 3 wherein said valve means comprises a plurality of valve structures, each mounted in flow regulating relation along a different one of said paths of fluid flow.
Claim 6
Dependent Claim
35 words
An assembly as in claim 4 wherein said valve means is structured to establish fluid flow along a first path of fluid flow defined from the needle to the syringe and through said filter means.
Claim 7
Dependent Claim
58 words
An assembly as in claim 5 wherein said valve means is structured and positionable to direct fluid flow along said first path of fluid flow from the needle, through said filter means to said syringe and subsequently, along a second path of fluid flow defined from the syringe to the needle in bypassing relation to said filter means.
Claim 8
Dependent Claim
43 words
An assembly as in claim 1 wherein said first and second conduit sections each include a first segment connected in fluid communication with one another and defining a first path of fluid flow between the needle and the syringe through said filter means.
Claim 9
Dependent Claim
46 words
An assembly as in claim 7 wherein said first and second conduit sections each include a second segment connected in fluid communication with one another and defining a second path of fluid flow between the syringe and the needle in bypassing relation to the filter means.
Claim 10
Dependent Claim
44 words
An assembly as in claim 8 wherein said valve means comprises a first valve structure mounted in fluid regulating relation to said first path of fluid flow and a second valve structure mounted in fluid regulating relation to said second path of fluid flow.
Claim 11
Dependent Claim
40 words
An assembly as in claim 9 wherein each of said valve structures is positionable between a flow-on and a flow-off position and wherein each of said valve structures is constructed as a one-way check valve when in said flow-on position.
Claim 12
Dependent Claim
44 words
An assembly as in claim 10 wherein each of said valve structures is disposed in a flow-on position and said check valve thereof structured to direct fluid flow along said first path upon fluid drawn from the needle to the syringe by the syringe.
Claim 13
Dependent Claim
36 words
An assembly as in claim 11 wherein each of said valve structures is disposed in said open position and said check valve thereof being structured to direct fluid flow along said second path of fluid flow.
Claim 14
Dependent Claim
37 words
An assembly as in claim 9 further comprising a third path of fluid flow defined by said first valve disposed to force fluid flow of culture media through said filter means, whereby said filter means is backwashed.
Claim 15
Dependent Claim
38 words
An assembly as in claim 8 wherein said first and second conduit sections are removably attachable to one another at connecting junctions of said first and second conduit segments of each of said first and second conduit sections.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |