Patent US4796612A successfully refreshed from Google Patents.
Patent US3834124A successfully refreshed from Google Patents.
US3834124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas trap device for an intravenous injection
Assignee: Jintan Terumo Co Ltd
•
Filing: 1972-11-28
•
Granted: 1974-09-10
•
Expires: 1992-11-28
Abstract
Abstract A gas trap device for an intravenous injection comprises longitudinal extending passageways, an inverted, U-shaped passageway provided between and communicated with the longitudinal extending passageways, and a trap chamber provided at the top portion of the inverted, U-shaped passageway so as to prevent a gaseous material contained in a transfusion liquid from entering the body.
Inventors
- 👤 H Ichikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:35
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/36; B; B01; B01D; B01D19/00; B01D19/0031
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
66 words
A gas trap device for an intravenous injection comprising longitudinally extending passageways, an inverted U-shaped liquid passageway provided between and communicated with said longitudinally extending passageways, and covering means provided over the inverted U-shaped liquid passageway for keeping airtight the liquid passageway, the top portion of said inverted Ushaped liquid passageway being larger in cross-sectional area than the other passageways, thereby providing a gas trap chamber.
Claim 2
Dependent Claim
66 words
A gas trap device for an intravenous injection comprising longitudinally extending passageways, an inverted U-shaped liquid passageway provided between and communicated with said longitudinally extending passageways, and covering means provided over the inverted U-shaped liquid passageway for keeping airtight the liquid passageway, the top portion of said inverted Ushaped liquid passageway being larger in cross-sectional area than the other passageways, thereby providing a gas trap chamber.
Claim 3
Dependent Claim
24 words
The gas trap device as claimed in claim 1 wherein said covering means is a rubber plug through which additional liquid can be introduced.
Claim 4
Dependent Claim
18 words
The gas trap device as claimed in claim 1 in which said covering means is a plastic plate.
Claim 5
Dependent Claim
21 words
The gas trap device as claimed in claim 1 in which a filter mesh is provided in said U-shaped liquid passageway.
Claim 6
Dependent Claim
38 words
The gas trap device as claimed in claim 1 in which a filter mesh is provided at the inlet to said U-shaped liquid passageway and another filter mesh is provided at the outlet of said U-shaped liquid passageway.
Claim 7
Dependent Claim
17 words
The gas trap device as claimed in claim 4 wherein said filter mesh is a plastic mesh.
Claim 8
Dependent Claim
19 words
The gas trap device as claimed in claim 4 wherein said filter mesh is a disc of porous material.
Claim 9
Dependent Claim
34 words
The gas trap device claimed in claim 4 wherein said gas trap chamber is surrounded by a holding cylinder which serves to hold said filter mesh in position relative to said U-shaped liquid passageway.
Claim 10
Dependent Claim
24 words
The gas trap device claimed in claim 4 wherein said filter mesh is thermally fused to the bottom portion of said gas trap chamber.
Claim 11
Dependent Claim
24 words
The gas trap device claimed in claim 4 wherein said filter mesh is adhesively bonded to the bottom portion of said gas trap chamber.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |