Patent US4655740A successfully refreshed from Google Patents.
US4655740A
Expired / Lapsed
US
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Autotransfusion apparatus
Assignee: Individual
•
Filing: 1985-08-06
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Granted: 1987-04-07
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Expires: 2005-08-06
Abstract
Abstract An apparatus for the autotransfusion of blood or similar body fluid. The apparatus includes a container which is an evacuable, vacuum-stable container having a bottom part and a cover part. The container also includes an inlet opening for the body fluid arranged in the cover part. An outlet opening for the body fluid is arranged in the cover part with a screen covering the outlet opening. An opening is arranged in the bottom part for the production of a gas flow connection to a chamber with a gas pressure different from that of the inside of the container. A membrane deformable by pressure, and through which the body fluid cannot pass is held at the edge between the bottom and the cover parts. The membrane divides the container into a gas-filled bottom chamber and a cover chamber sealed off from the latter to receive the body fluid. A float seals off the outlet opening.
Inventors
- 👤 Dieter Ruhland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:42
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/05; A61M; A61M1/00; A61M1/02; Y; Y10; Y10S; Y10S128/00; Y10S128/03
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
137 words
An autotransfusion apparatus for blood or similar body fluid, consisting of: a vacuum-stable container having a bottom part and a cover part, said cover part including an inlet opening for the body fluid, and an outlet opening for the body fluid, a screen covering said outlet opening, said bottom part including an opening connectible with means for producing a gas pressure in the interior of said container; a membrane impermeable by the body fluid, and deformable by said gas pressure and fastened gas-tight at the edge between said bottom and cover parts, said membrane divideing the container into a gas-filled bottom chamber and a cover chamber, said cover chamber being sealed from said bottom chamber to receive the body fluid; and a float buoyant in the body fluid for sealing said outlet opening when said container empties.
Claim 2
Dependent Claim
137 words
An autotransfusion apparatus for blood or similar body fluid, consisting of: a vacuum-stable container having a bottom part and a cover part, said cover part including an inlet opening for the body fluid, and an outlet opening for the body fluid, a screen covering said outlet opening, said bottom part including an opening connectible with means for producing a gas pressure in the interior of said container; a membrane impermeable by the body fluid, and deformable by said gas pressure and fastened gas-tight at the edge between said bottom and cover parts, said membrane divideing the container into a gas-filled bottom chamber and a cover chamber, said cover chamber being sealed from said bottom chamber to receive the body fluid; and a float buoyant in the body fluid for sealing said outlet opening when said container empties.
Claim 3
Dependent Claim
18 words
An apparatus according to claim 1 wherein said float is disposed between said outlet opening and said screen.
Claim 4
Dependent Claim
17 words
An apparatus according to claim 2 wherein said outlet opening is formed by a conical sealing surface.
Claim 5
Dependent Claim
14 words
An apparatus according to claim 1 wherein said float has a spherical sealing surface.
Claim 6
Dependent Claim
21 words
An apparatus according to claim 1 wherein said outlet opening is disposed after a blood outlet closed with a piercing membrane.
Claim 7
Dependent Claim
21 words
An apparatus according to claim 5 wherein said outlet opening is disposed after an evacuating connection independent of said blood outlet.
Claim 8
Dependent Claim
15 words
An apparatus according to claim 1 further including a float-enclosing case surrounding said outlet opening.
Claim 9
Dependent Claim
22 words
An apparatus according to claim 2 further including an offset disposed between said screen and said outlet opening in said cover part.
Claim 10
Dependent Claim
20 words
An apparatus according to claim 1 wherein said sealing surface of the float consists of a material harmless to blood.
Claim 11
Dependent Claim
15 words
An apparatus according to claim 1 wherein said float has the form of a ball.
Claim 12
Dependent Claim
36 words
An apparatus according to claim 1 wherein said membrane under the influence of fluid pressure can be laid both against an inner surface of the cover and also against an inner surface of the bottom part.
Claim 13
Dependent Claim
23 words
An apparatus according to claim 1 wherein said container with said membrane may be designed as a one-piece, one-time use container of plastic.
Claim 14
Dependent Claim
17 words
An apparatus according to claim 1 wherein said cover part is fastened detachably to said bottom part.
Claim 15
Dependent Claim
21 words
An apparatus according to claim 13 wherein a rim section of said membrane is clamped between said cover and bottom parts.
Claim 16
Dependent Claim
20 words
An apparatus according to claim 1 wherein said inlet opening discharges tangential to the inner wall of the cover part.
Claim 17
Dependent Claim
16 words
An apparatus according to claim 15 wherein said inlet opening consists of a mouthpiece widened trumpet-like.
Claim 18
Dependent Claim
40 words
An apparatus according to claim 1 wherein said screen is detachably held at a distance before the outlet opening and defines a chamber for the holding back of substances floating on the body fluid and carried along through said screen.
References Cited (Backward Citations)
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Cited
US4006745A
Cited
US4033345A
Cited
FR2346238A1
Cited
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Cited
US4493705A
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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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |