US3635798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood and fluid culturing system
Assignee: WILLIAM R KIRKHAM
•
Filing: 1969-03-24
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Granted: 1972-01-18
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Expires: 1989-03-24
Abstract
Abstract Method of culturing blood by agglomerating red blood cells in a container containing a solution of ''''agglomerating'''' agents and a nutrient medium for any bacteria which may be present in the blood, filtering the solution and unagglomerated blood elements whereby bacteria are trapped upon the filter, adding a culture medium to the filter and incubating the bacteria for growth and identification. The filtering unit may be composed of two separate filters so that aerobic and anaerobic bacterial growth may be carried out. The apparatus for the method is also disclosed.
Inventors
- 👤 William R Kirkham
- 👤 William R Kozub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:43
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/02; C12M23/14; C12M37/00; C12M37/02; C12M41/00; C12M41/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
37 words
The process of claim 1, which further includes the step of subsequently adding a culture medium to said filter, and storing said filter and said bacteria at a suitable temperature to facilitate bacterial incubation, growth and identification.
Claim 2
Dependent Claim
74 words
The process of claim 2 which further includes the steps of causing a portion of the solution and unagglomerated blood elements to flow through a second filter which is similar to said first mentioned filter, exposing one filter to sterile air for aerobic bacterial growth, exposing the second filter to an environment lacking free oxygen and facilitating anaerobic growth, and storing said filters at a suitable temperature to facilitate bacterial incubation, growth and identification.
Claim 3
Dependent Claim
209 words
A blood culture apparatus which comprises: a container having inlet means for allowing blood to be inserted therein for culture and outlet means for permitting controlled outflow of the contents of said container; filter means connected to the outlet of said container; and means for recovering the contents of said container passing through said filter means said filter means comprising a first and second filter, each having an inlet and an outlet; a Y-shaped tube member having an upper leg connected to said container outlet means; a first lower leg of said Y tube connected to an inlet of said first filter; a second lower leg of said Y tube connected to an inlet of said second filter; means for individually connecting the outlet of said filters with the separate legs of a second Y-shaped member; a third leg of said second Y-shaped member connected to said recovering means; individual valve means intermediate said first Y-shaped member and the inlets of said filters for permitting the contents of said container to flow through said outlet means and to each of said filters under control of each of said valve means so that flow may occuR in any selected one of said filters or in both of said filters concurrently.
Claim 4
Dependent Claim
122 words
A blood culture apparatus which comprises: a container having inlet means for allowing blood to be inserted therein for culture and outlet means for permitting controlled outflow of the contents of said container; filter means connected to the outlet of said container; and means for recovering the contents of said container passing through said filter means said filter means comprising a first and second series connected filter; means for connecting the outlet of said container with the input of said first filter means; means for connecting the outlet of said first filter means with the inlet of said second filter means; and means for connecting the outlet of said second filter means with said means for recovering the contents of said container.
Claim 5
Dependent Claim
36 words
An apparatus according to claim 5 wherein said means for connecting the outlet of said container to said first filter means includes valve means for permitting the selective flow of said container contents through said filters.
References Cited (Backward Citations)
US2923669A
Cited
US2992974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |