US4976708A
Expired / Lapsed
US
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Blood reservoir
Assignee: Terumo Corp
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Filing: 1989-06-15
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Granted: 1990-12-11
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Expires: 2009-06-15
Abstract
Abstract In a blood reservoir comprising a container casing defining a space for accommodating blood, the casing having a generally rectangular contour defining a pair of top and bottom sides and a pair of laterally opposed sides, provided that the casing assumes a vertically upright attitude, an inlet port is disposed in one lateral side of the casing for introducing blood into the space, an outlet port is disposed in the bottom side of the casing for discharging blood from the space, and a vent port disposed in the top side of the casing in fluid communication with the space. In another form, a partition separates the space into upper and lower compartments, and apertures are formed in the partition for allowing partial fluid communication between the compartments. The inlet port and the vent port are in communication with the upper compartment, and the outlet port is in communication with the lower compartment.
Inventors
- 👤 Hiroaki Oshiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:08
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M1/3627
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
266 words
A blood reservoir, comprising: a container casing defining a space for accommodating blood, said casing having a generally rectangular contour in a vertical plane defining a pair of upper and lower sides each of a length L and a pair of laterally opposed sides each of a height H when said casing assumes a vertically upright attitude, an inlet port disposed in at least one of the laterally opposed sides of said casing for introducing blood into said space, said inlet port extending into said case horizontally a distance of L1 and having a center axis spaced apart from the lower side of said casing by a distance of H1, an outlet port disposed in the lower side of said casing for discharging blood from said space, a center axis of said outlet port being spaced apart from the other one of said laterally opposed sides by a distance of L2, and a vent port disposed in the upper side of said casing in fluid communication with said space; wherein said inlet port comprises a cylindrical conduit extending from the exterior into said space through the one lateral side of said casing, and the portion of said conduit in the casing includes a closed distal end and a plurality of apertures formed in an adjoining cylindrical wall thereof for introducing blood into said space in a dispersed manner, and the following dimensional relationships are established: L1/L is in the range of about 0.1 to 0.3; L2/L is in the range of about 0.1 to 0.3; and H1/H is in the range of about 0.3 to 0.6.
Claim 2
Dependent Claim
266 words
A blood reservoir, comprising: a container casing defining a space for accommodating blood, said casing having a generally rectangular contour in a vertical plane defining a pair of upper and lower sides each of a length L and a pair of laterally opposed sides each of a height H when said casing assumes a vertically upright attitude, an inlet port disposed in at least one of the laterally opposed sides of said casing for introducing blood into said space, said inlet port extending into said case horizontally a distance of L1 and having a center axis spaced apart from the lower side of said casing by a distance of H1, an outlet port disposed in the lower side of said casing for discharging blood from said space, a center axis of said outlet port being spaced apart from the other one of said laterally opposed sides by a distance of L2, and a vent port disposed in the upper side of said casing in fluid communication with said space; wherein said inlet port comprises a cylindrical conduit extending from the exterior into said space through the one lateral side of said casing, and the portion of said conduit in the casing includes a closed distal end and a plurality of apertures formed in an adjoining cylindrical wall thereof for introducing blood into said space in a dispersed manner, and the following dimensional relationships are established: L1/L is in the range of about 0.1 to 0.3; L2/L is in the range of about 0.1 to 0.3; and H1/H is in the range of about 0.3 to 0.6.
Claim 3
Dependent Claim
30 words
A blood reservoir according to claim 1, wherein said plurality of apertures are formed in substantially the entire cylindrical wall of said conduit forming the inlet port within said space.
Claim 4
Dependent Claim
13 words
A blood reservoir according to claim 1 wherein said container casing is flexible.
Claim 5
Dependent Claim
37 words
A blood reservoir according to claim 1 wherein said inlet port is disposed in one lateral side of said casing, said outlet port is disposed in the lower side of said casing near the other lateral side.
Claim 6
Dependent Claim
24 words
A blood reservoir according to claim 1 wherein the upper side of said container casing includes a bevel portion extending toward said vent port.
Claim 7
Dependent Claim
39 words
A blood reservoir according to claim 1 wherein said container casing includes a pair of generally rectangular sheets which are sealed together along the four sides with said inlet port, said outlet port and said vent port interposed therebetween.
Claim 8
Dependent Claim
121 words
A blood reservoir comprising a container casing defining a space, said casing having a generally rectangular contour in a vertical plane defining a pair of upper and lower sides and a pair of laterally opposed sides, provided that said casing assumes a vertically upright attitude, partition means for separating the space into first and second compartments for accommodating blood, but allowing partial fluid communication between the first and second compartments, an inlet port in a lateral side of said casing in communication with said first compartment, an outlet port disposed in the lower side of said casing in communication with said second compartment, and a vent port disposed in the upper side of said casing in communication with said first compartment.
Claim 9
Dependent Claim
121 words
A blood reservoir comprising a container casing defining a space, said casing having a generally rectangular contour in a vertical plane defining a pair of upper and lower sides and a pair of laterally opposed sides, provided that said casing assumes a vertically upright attitude, partition means for separating the space into first and second compartments for accommodating blood, but allowing partial fluid communication between the first and second compartments, an inlet port in a lateral side of said casing in communication with said first compartment, an outlet port disposed in the lower side of said casing in communication with said second compartment, and a vent port disposed in the upper side of said casing in communication with said first compartment.
Claim 10
Dependent Claim
22 words
A blood reservoir according to claim 7 wherein said inlet port comprises a cylindrical conduit extending from the exterior into said space.
Claim 11
Dependent Claim
44 words
A blood reservoir according to claim 8 wherein the portion of said conduit in the casing includes a closed distal end and a plurality of apertures formed in an adjoining cylindrical wall thereof for introducing blood into said space therethrough in a dispersed manner.
Claim 12
Dependent Claim
30 words
A blood reservoir according to claim 9, wherein said plurality of apertures are formed in substantially the entire cylindrical wall of said conduit forming the inlet port within said space.
Claim 13
Dependent Claim
13 words
A blood reservoir according to claim 7 wherein said container casing is flexible.
Claim 14
Dependent Claim
39 words
A blood reservoir according to claim 7 wherein said partition means includes a flexible diaphragm separating the space into the first and second compartments and means formed in said diaphragm for fluid communication between said first and second compartments.
Claim 15
Dependent Claim
33 words
A blood reservoir according to claim 12 wherein said first compartment is vertically above said second compartment and said inlet port is disposed in one of the laterally opposed sides of said casing.
Claim 16
Dependent Claim
35 words
A blood reservoir according to claim 13 wherein said communicating means in said diaphragm is near the other lateral side of said casing remote from the one lateral side where said inlet port is disposed.
Claim 17
Dependent Claim
31 words
A blood reservoir according to claim 13 wherein said outlet port is disposed in the lower side of said casing near the one lateral side where said inlet port is disposed.
Claim 18
Dependent Claim
20 words
A blood reservoir according to claim 12 wherein said communicating means includes a plurality of apertures formed in said diaphragm.
Claim 19
Dependent Claim
49 words
A blood reservoir according to claim 16 wherein said apertures are distributed over a region on said diaphragm near the other lateral side of said casing remote from the one lateral side where said inlet port is disposed, said region having a longer vertical distance than a lateral distance.
Claim 20
Dependent Claim
44 words
A blood reservoir according to claim 12 which further comprises an intermediate vent port disposed in said diaphragm or between said diaphragm and said casing near the vertically upper portion of said diaphragm for air communication from said second compartment to said vent port.
Claim 21
Dependent Claim
19 words
A blood reservoir according to claim 18 wherein said intermediate vent port is in the form of a slit.
Claim 22
Dependent Claim
28 words
A blood reservoir according to claim 7 wherein the upper side of said container casing includes a bevel portion for said first compartment extending toward said vent port.
Claim 23
Dependent Claim
42 words
A blood reservoir according to claim 7 wherein said container casing includes a pair of generally rectangular sheets which are sealed together along the four sides with said inlet port, said outlet port, said vent port, and said partition means interposed therebetween.
Claim 24
Dependent Claim
59 words
A blood reservoir according to claim 21 wherein said partition means is a flexible diaphragm having opposed sides sealingly attached to said pair of sheets for separating the space into the first and second compartments, and one side of said diaphragm attached to one sheet is vertically above the other side of said diaphragm attached to the other sheet.
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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) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |