US5586872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable peristaltic pump
Assignee: OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTIU "KONSTRUKTORSKOE BJURO PULS"
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Filing: 1992-09-02
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Granted: 1996-12-24
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Expires: 2012-09-02
Abstract
Abstract The invention relates to a pump for biological fluids, for example for blood transference by pump. The pump according to the invention comprises a housing (1) in which there are placed at least one resilient tube (3) for passing biological fluid, and an operating head (5) rotated in the direction of fluid transference and including at least one roller member (6) to bear against the tube (3), said roller member (or each roller member) comprising at least two rollers (7,8) positioned in series so that the roller (7) of said roller member which is preceding in the direction of the operating head rotation allows greater tube (3) aperture than does the roller (8) of the same member (6) that follows. The pump has simple and convenient means for adjusting the degree of compressing the tube (3) by the rollers (7,8) and ensures blood transfusion causing practically no damage to the blood cells.
Inventors
- 👤 Valery V. Skobelev
- 👤 Mikhail A. Slivin
- 👤 Evgeny A. Selezov
- 👤 Viktor G. Kabakov
- 👤 Gennady S. Puzikov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:50
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253; F04B43/1276; A; A61; A61M; A61M60/00; A61M60/10; A61M60/104; A61M60/109; A61M60/113; A61M60/20; A61M60/247; A61M60/253; A61M60/268; A61M60/279; A61M60/40; A61M60/424; A61M60/438; A61M60/441; A61M5/00; A61M5/14; A61M5/142; A61M5/14212; A61M5/14232
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
164 words
A pump for biological fluids comprising a housing which includes: a resilient tube for passing through biological fluid, and an operating head which is rotatable in the direction of fluid transference by pump and which contains at least one roller member for bearing against said tube, wherein: the at least one roller member comprises at least two rollers placed in series so that a roller of said roller member which is preceding in a direction of the operating head rotation has a greater aperture of said tube for transference in comparison with the roller of the same member which follows, and the pump is provided with a means for adjusting the degree of compression of said tube using the rollers, said means being mounted in the region of the operating head, wherein, said means for adjusting the degree of compression of the tube comprises a turnable and retainable eccentric placed coaxially with the operating head and coupled with at least one said roller member.
Claim 2
Dependent Claim
164 words
A pump for biological fluids comprising a housing which includes: a resilient tube for passing through biological fluid, and an operating head which is rotatable in the direction of fluid transference by pump and which contains at least one roller member for bearing against said tube, wherein: the at least one roller member comprises at least two rollers placed in series so that a roller of said roller member which is preceding in a direction of the operating head rotation has a greater aperture of said tube for transference in comparison with the roller of the same member which follows, and the pump is provided with a means for adjusting the degree of compression of said tube using the rollers, said means being mounted in the region of the operating head, wherein, said means for adjusting the degree of compression of the tube comprises a turnable and retainable eccentric placed coaxially with the operating head and coupled with at least one said roller member.
Claim 3
Dependent Claim
15 words
The pump of claim 1, wherein the means for retaining said eccentric comprises arrestment members.
Claim 4
Dependent Claim
38 words
The pump of claim 1 wherein the roller of said roller member which is preceding in the direction of rotation has a second adjustment means for changing the position of said roller in relation to the carrier lever.
Claim 5
Dependent Claim
47 words
The pump of claim 3, wherein said second means for adjusting the degree of compression of said tube is arranged in the form of a figurate or straight slot in the carrier lever to receive the axis of the roller preceding in the direction of roller movement.
Claim 6
Dependent Claim
13 words
The pump of claim 3, wherein said second adjustment means comprises an eccentric.
References Cited (Backward Citations)
SU237346A1
Cited
US2123781A
Cited
FR1035679A
Cited
US2987004A
Cited
US2831437A
Cited
US2987005A
Cited
US3447478A
Cited
US3554674A
Cited
US3726613A
Cited
US3927955A
Cited
DE2162998A1
Cited
DE2217787A1
Cited
US4012177A
Cited
US4205948A
Cited
US4363609A
Cited
US4484864A
Cited
JPS5974387A
Cited
JPS59165883A
Cited
US4568255A
Cited
SU1408105A1
Cited
JPH01211678A
Cited
SU1643783A1
Cited
GB2230301A
Cited
US4997347A
Cited
US5372486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-24 | 2000-06-24 | 2000-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-24 | 2004-06-24 | 2004-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-24 | 2008-06-24 | 2008-12-24 | $7700.00 | Window Closed / Lapsed |