Patent JPS53126078A successfully refreshed from Google Patents.
US4553964A
Expired / Lapsed
US
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Infusion apparatus
Assignee: JMS Co Ltd
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Filing: 1984-02-27
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Granted: 1985-11-19
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Expires: 2004-02-27
Abstract
Abstract An infusion apparatus is provided which can give an infusion with high precision and which allows each changing of the infusion capacity. The apparatus includes a first burette and a second burette connected in series. The burettes communicate with each other through a connector which can be selectively opened or closed by directional control valve means.
Inventors
- 👤 Hideki Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:56
CPC Classifications
G; G01; G01F; G01F11/00; G01F11/28; A; A61; A61M; A61M5/00; A61M5/14; A61M5/1412
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
98 words
An infusion apparatus comprising a first upper burette, a second lower burette and a connector, said burettes communicating in series with each other through said connector, said connector having a first passageway therethrough for establishing communication between said first and second burettes, said connector having a second passageway therein communicating with and adapted to introduce air into said second burette, and directional control valve means positioned across both said first and second passageways and adapted to close said first passageway when said second passageway is opened and to open said first passageway when said second passageway is closed.
Claim 2
Dependent Claim
98 words
An infusion apparatus comprising a first upper burette, a second lower burette and a connector, said burettes communicating in series with each other through said connector, said connector having a first passageway therethrough for establishing communication between said first and second burettes, said connector having a second passageway therein communicating with and adapted to introduce air into said second burette, and directional control valve means positioned across both said first and second passageways and adapted to close said first passageway when said second passageway is opened and to open said first passageway when said second passageway is closed.
Claim 3
Dependent Claim
23 words
The infusion apparatus as defined in claim 1, wherein said first burette and second burette are cylinders different in diameter from each other.
Claim 4
Dependent Claim
36 words
The infusion apparatus as defined in claim 2, wherein said first burette and second burette are each graduated, and the unit quantity of the graduations is different on said first burette and on said second burett.
Claim 5
Dependent Claim
21 words
The infusion apparatus as defined in claim 1, wherein said directional control valve means is provided with a spool plug valve.
Claim 6
Dependent Claim
21 words
The infusion apparatus as defined in claim 1, wherein said directional control valve means is provided with a three-way plug cock.
Claim 7
Dependent Claim
20 words
The infusion apparatus as defined in claim 1, wherein said conenctor is formed in one body with said first burette.
Claim 8
Dependent Claim
17 words
The infusion apparatus as defined in claim 1, wherein said first burette contains an air-introducing passageway therein.
Claim 9
Dependent Claim
22 words
The infusion apparatus as defined in claim 1, wherein said first burette contains a passageway therein for introducing a medicinal solution thereto.
Claim 10
Dependent Claim
24 words
The infusion apparatus as defined in claim 8, wherein said first burette additionally contains a passageway therein for introducing an auxiliary medicinal solution thereto.
Claim 11
Dependent Claim
26 words
The infusion apparatus as defined in claim 1, wherein said first burette contains receiving means therein adapted to receive lines adapted to support the infusion apparatus.
Claim 12
Dependent Claim
23 words
The infusion apparatus as defined in claim 1, wherein said second burette contains a passageway therein for introducing an auxiliary medicinal solution thereto.
Claim 13
Dependent Claim
31 words
The infusion apparatus as defined in claim 1, wherein the second burette contains an infusion outlet passageway in the terminal portion thereof opposite that portion thereof in contact with the connector.
References Cited (Backward Citations)
US3001397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-18 | 1989-05-20 | 1989-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-18 | 1993-05-20 | 1993-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-18 | 1997-05-20 | 1997-11-19 | $7700.00 | Window Closed / Lapsed |