Patent US5174894A successfully refreshed from Google Patents.
US5174894A
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Blood component separation apparatus
Assignee: Terumo Corp
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Filing: 1988-06-25
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Granted: 1992-12-29
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Expires: 2008-06-25
Abstract
Abstract A blood component separation apparatus is disclosed which comprises at least three plate-like members arranged in a stacked fashion, a blood circulation circuit composed of at least two layers which are arranged between the associated plate-like members, a filter for blood component separation which is incorporated into a blood passage, a plurality of connection ports provided in the plate-like members to allow them to communicate with the blood circulation circuit, communication tubes mounted in the blood circulation circuit to place part of the connection ports in communication with an associated connection port, the communication tube being adapted to control a fluid communication in the blood circulation circuit and an external function section connected to corresponding connection ports. According to the present invention, a three-dimensional blood circuit of a multi-layered structure can be provided which can build up a complex blood circuit of a better function than that of a conventional flat blood circulation circuit.
Inventors
- 👤 Takaaki Ohsawa
- 👤 Tatsuya Fujii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:41
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/14; B01D61/20; A; A61; A61M; A61M1/00; A61M1/34; A61M1/36; A61M1/3621; A61M1/3627; A61M1/3633; A61M1/3635; B01D61/22; B01D63/00; B01D63/08; B01D63/082; B01D63/084; B01D65/00; A61M2202/00; A61M2202/04; A61M2202/0413; A61M2205/00; A61M2205/33; A61M2205/3331
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
130 words
A blood component separation apparatus comprising: at least three plate-like members arranged in a stacked fashion; a blood circulation circuit comprising at least two layers which are arranged between associated plate-like members and at least partly defined by grooves in said plate-like members; a filter housing formed as a part of blood passages in the blood circulation circuit; a blood component separation filter mounted in the filter housing; a plurality of connection ports provided in the plate-like members to allow communication with the blood circulation circuit; communication tubes mounted in the blood circulation circuit to place part of the connection ports in communication with associated ports, the communication tubes including means for controlling fluid communication in the blood circulation circuit; and an external function section connected to corresponding connection ports.
Claim 2
Dependent Claim
130 words
A blood component separation apparatus comprising: at least three plate-like members arranged in a stacked fashion; a blood circulation circuit comprising at least two layers which are arranged between associated plate-like members and at least partly defined by grooves in said plate-like members; a filter housing formed as a part of blood passages in the blood circulation circuit; a blood component separation filter mounted in the filter housing; a plurality of connection ports provided in the plate-like members to allow communication with the blood circulation circuit; communication tubes mounted in the blood circulation circuit to place part of the connection ports in communication with associated ports, the communication tubes including means for controlling fluid communication in the blood circulation circuit; and an external function section connected to corresponding connection ports.
Claim 3
Dependent Claim
64 words
The blood component separation apparatus according to claim 1, wherein an opening is provided in at least two of said at least three plate-like members at a location not hampering the function of said blood circulation circuit, said communication tubes are provided across the opening, and a clamping member is provided at the opening to control the closing and opening of the communication tube.
Claim 4
Dependent Claim
67 words
The blood component separation apparatus according to claim 1, wherein, at a marginal position not hampering the function of said blood circulation circuit, cutouts are so provided as to penetrate at least two of said at least three plate-like members with said communication tube arranged across the cutouts, and a roller pump is mounted in the cutout with the communication tube located relative to the roller pump.
Claim 5
Dependent Claim
18 words
The blood component separation apparatus according to claim 1, wherein said blood circulation circuit has a valve trap.
Claim 6
Dependent Claim
19 words
The blood component separation apparatus according to claim 1, wherein said blood circulation circuit has a pressure monitoring circuit.
Claim 7
Dependent Claim
19 words
The blood component separation apparatus according to claim 1, wherein said blood circulation circuit has a circuit closing site.
Claim 8
Dependent Claim
22 words
The blood component separation apparatus according to claim 1, wherein said blood circulation circuit has a housing section for a filter mechanism.
Claim 9
Dependent Claim
20 words
The blood component separation apparatus according to claim 1, wherein said blood circulation circuit has a liquid level detection section.
Claim 10
Dependent Claim
19 words
The blood component separation apparatus according to claim 1, wherein said blood circulation circuit has a hemolysis detection section.
Claim 11
Dependent Claim
19 words
The blood component separation apparatus according to claim 1, wherein said blood circulation circuit has a blood storage container.
Claim 12
Dependent Claim
19 words
The blood component separation apparatus according to claim 1, wherein said blood circulation circuit has a sample collection inlet.
Claim 13
Dependent Claim
20 words
The blood component separation apparatus according to claim 1, wherein said external function section has a blood discharging passage line.
Claim 14
Dependent Claim
20 words
The blood component separation apparatus according to claim 1, wherein said external function section has a blood return passage line.
Claim 15
Dependent Claim
20 words
The blood component separation apparatus according to claim 1, wherein said external function section has an anti-coagulant mixing passage line.
Claim 16
Dependent Claim
20 words
The blood component separation apparatus according to claim 1, wherein said external function section has a pressure-monitoring port connection line.
Claim 17
Dependent Claim
20 words
The blood component separation apparatus according to claim 1, wherein said external function section has a physiological saline passage line.
Claim 18
Dependent Claim
20 words
The blood component separation apparatus according to claim 16, wherein said external function section has an anti-coagulant mixing passage line.
Claim 19
Dependent Claim
20 words
The blood component separation apparatus according to claim 1, wherein said external function section has a blood component collection container.
Claim 20
Dependent Claim
19 words
The blood component separation apparatus according to claim 1, wherein said external function section has a blood storage container.
Claim 21
Dependent Claim
20 words
The blood component separation apparatus according to claim 1, wherein said external function section has a blood component discharging container.
Claim 22
Dependent Claim
22 words
The blood component separation apparatus according to claim 1, wherein said external function section has a liquid medicine container connection passage line.
Claim 23
Dependent Claim
24 words
The blood component separation apparatus according to claim 1, wherein said communication tubes comprise a pump tube with a roller pump set in place.
Claim 24
Dependent Claim
28 words
The blood component separation apparatus according to claim 1, wherein said communication tubes are set relative to an external tube closing unit to provide a circuit closing site.
Claim 25
Dependent Claim
25 words
The blood component separation apparatus according to claim 1, wherein a filter for blood component separation comprises a flat type filter having a layered structure.
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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) | 1995-12-29 | 1996-06-29 | 1996-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-29 | 2000-06-29 | 2000-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-29 | 2004-06-29 | 2004-12-29 | $7700.00 | Window Closed / Lapsed |