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US4317455A
Expired / Lapsed
US
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Method of collecting and dispensing a blood sample
Assignee: American Hospital Supply Corp
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Filing: 1980-12-29
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Granted: 1982-03-02
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Expires: 2000-12-29
Abstract
Abstract A method of collecting a blood sample, such as from an artery, in a flexible tube collector while forcing at least a portion of the air in the collector through a "nonwet" filter by means of blood pressure. This nonwet filter prevents escape of blood from the collector. The blood containing blood sampler can then be chilled in an ice bath if a test is not run immediately, and then the test sample dispensed to a machine for testing the partial pressure oxygen and carbon dioxide in the blood. If the machine does not have a vacuum extractor, blood can be stripped from the tube by a movable clamp structure.
Inventors
- 👤 David S. Akhavi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:11
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/15; A61B5/153; A61B5/150007; A61B5/150015; A61B5/15003; A61B5/150053; A61B5/150061; A61B5/150099; A61B5/150206; A61B5/150213; A61B5/150221; A61B5/150229; A61B5/150236; A61B5/150305
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
A method of collecting a blood sample comprising the steps of: (a) puncturing a blood conduit with a needle attached to a vented reservoir containing a gas; (b) applying a suction to the vent of the reservoir to extract blood into the reservoir; and (c) closing the reservoir at a location to segment the collected blood sample.
Claim 2
Independent Claim
57 words
A method of collecting a blood sample comprising the steps of: (a) puncturing a blood conduit with a needle attached to a vented reservoir containing a gas; (b) applying a suction to the vent of the reservoir to extract blood into the reservoir; and (c) closing the reservoir at a location to segment the collected blood sample.
Claim 3
Dependent Claim
20 words
A method as set forth in claim 1, wherein the vacuum is applied with a syringe attached to the vent.
Claim 4
Dependent Claim
29 words
A method as set forth in claim 1, wherein the suction is applied to the reservoir by sucking gas out of the reservoir through a filter across the reservoir.
Claim 5
Independent Claim
76 words
A method of collecting and dispensing a blood sample comprising the steps of: (a) puncturing a blood conduit with a needle attached to a vented reservoir containing a gas; (b) forcing at least a portion of the gas out of the vent so blood can flow into the reservoir; and (c) dispensing blood through a dispensing opening of the reservoir by applying a pressure to the reservoir by means of a syringe attached to the vent.
Claim 6
Independent Claim
76 words
A method of collecting and dispensing a blood sample comprising the steps of: (a) puncturing a blood conduit with a needle attached to a vented reservoir containing a gas; (b) forcing at least a portion of the gas out of the vent so blood can flow into the reservoir; and (c) dispensing blood through a dispensing opening of the reservoir by applying a pressure to the reservoir by means of a syringe attached to the vent.
Claim 7
Dependent Claim
21 words
A method as set forth in claim 4, wherein the pressure is applied across a filter between the syringe and reservoir.
Claim 8
Independent Claim
68 words
A method of dispensing a blood sample sealed within a reservoir having a closed dispensing opening from a vent which is closed by a filter, comprising the steps of: (a) opening the dispensing opening; (b) connecting a syringe to the vent external of the filter; and (c) applying pressure to the reservoir across the filter by means of the syringe to force blood out of the dispensing opening.
Claim 9
Independent Claim
68 words
A method of dispensing a blood sample sealed within a reservoir having a closed dispensing opening from a vent which is closed by a filter, comprising the steps of: (a) opening the dispensing opening; (b) connecting a syringe to the vent external of the filter; and (c) applying pressure to the reservoir across the filter by means of the syringe to force blood out of the dispensing opening.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-01 | 1985-08-31 | 1986-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-01 | 1989-08-31 | 1990-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-01 | 1993-08-31 | 1994-03-02 | $7700.00 | Window Closed / Lapsed |