US5249584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Syringe for hematocrit and oxygen saturation blood analyzer
Assignee: US ALCOHOL TESTING OF AMERICA Inc
•
Filing: 1991-11-07
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Granted: 1993-10-05
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Expires: 2011-11-07
Abstract
Abstract An improved blood analyzing device is disclosed for measuring the hematocrit and oxygen saturation levels of a quantity of blood. The device is a syringe containing a single optical window insert into the tubular barrel.
Inventors
- 👤 Maurice N. Karkar
- 👤 James C. Velnosky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:16
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/49; G01N21/51; G01N21/01; G01N21/03; G01N21/0303; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/4925; G01N15/00; G01N15/04; G01N15/05; G01N2015/055; G01N21/25; G01N21/31; G01N21/314; G01N2021/3181; G01N2021/4704; G01N2021/4709; G01N35/00; G01N35/10; G01N2035/1027; G01N2035/1048; G01N2035/1062
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
131 words
A syringe comprising: an elongate, tubular member having a proximal end, a distal end, and a hollow lumen extending longitudinally therethrough; a needle disposed on said proximal end of said tubular member, said needle being in fluid communication with said lumen; a flange formed on the distal end of said tubular member; a piston insertable through said flange into the distal end of said tubular member, said piston being reciprocally movable within said lumen; and a single optical window member having inner and outer surfaces, said window member being insert into said tubular member in a manner wherein said inner surface defines a portion of the lumen, and constructed of a material which provides a substantially transparent, repeatable optical light path from the exterior of the tubular member to the lumen.
Claim 2
Dependent Claim
131 words
A syringe comprising: an elongate, tubular member having a proximal end, a distal end, and a hollow lumen extending longitudinally therethrough; a needle disposed on said proximal end of said tubular member, said needle being in fluid communication with said lumen; a flange formed on the distal end of said tubular member; a piston insertable through said flange into the distal end of said tubular member, said piston being reciprocally movable within said lumen; and a single optical window member having inner and outer surfaces, said window member being insert into said tubular member in a manner wherein said inner surface defines a portion of the lumen, and constructed of a material which provides a substantially transparent, repeatable optical light path from the exterior of the tubular member to the lumen.
Claim 3
Dependent Claim
14 words
The syringe of claim 1 wherein said window member has a rectangularly shaped configuration.
Claim 4
Dependent Claim
15 words
The syringe of claim 2 wherein said inner and outer surfaces have generally planar configurations.
Claim 5
Dependent Claim
21 words
The syringe of claim 2 wherein said outer surface has a convex configuration and said inner surface has a concave configuration.
Claim 6
Dependent Claim
21 words
The syringe of claim 2 wherein said outer surface has a concave configuration and said inner surface has a convex configuration.
Claim 7
Dependent Claim
21 words
The syringe of claim 2 wherein said outer surface has a convex configuration and said inner surface has a planar configuration.
Claim 8
Dependent Claim
21 words
The syringe of claim 2 wherein said outer surface has a concave configuration and said inner surface has a planar configuration.
Claim 9
Dependent Claim
14 words
The syringe of claim 2 wherein said inner and outer surfaces have concave configurations.
Claim 10
Dependent Claim
14 words
The syringe of claim 2 wherein said inner and outer surfaces have convex configurations.
Claim 11
Dependent Claim
15 words
The syringe of claims 1 further comprising an end cap selectively positionable over said needle.
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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) | 1996-10-04 | 1997-04-05 | 1997-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-04 | 2001-04-05 | 2001-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-04 | 2005-04-05 | 2005-10-05 | $7700.00 | Window Closed / Lapsed |