Patent US4127231A successfully refreshed from Google Patents.
US4127231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support arm for centrifugal liquid processing apparatus
Assignee: Baxter International Inc
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Filing: 1977-11-11
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Granted: 1978-11-28
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Expires: 1997-11-11
Abstract
Abstract The support arm is used in an apparatus for the centrifugal liquid processing of whole blood wherein whole blood is withdrawn from a donor and passed through a flexible tubing of a fluid system of the apparatus into a bowl thereof where the blood is centrifuged to separate the same into at least three components. One component which is to be collected is withdrawn through a flexible tubing at a fixed rate of volumetric displacement while the other two components are withdrawn through flexible tubings at variable rates of volumetric displacement. The other two components are recombined and returned to the donor. The withdrawal of the one component is optically monitored to determine whether or not either one of the other components is being mixed with the one component. The support arm is positioned above the bowl for guiding the tubings to the bowl in a first position and is pivotal horizontally to a second position where the bowl can be easily removed. A releasable latch member holds the arm in the first position and mounts an optical sensing system for monitoring the withdrawal of the one component through a light transmissive portion of the flexible tubing, through which the one component is being withdrawn.
Inventors
- 👤 Mirza A. Khoja
- 👤 Louis F. Gutierrez
- 👤 John T. Perone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:40
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; B04B5/0442; Y; Y10; Y10S; Y10S128/00; Y10S128/03
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
146 words
In an apparatus of the type that includes a centrifuge device having a closed bowl into which liquid is supplied and/or from which liquid is withdrawn by means of at least one flexible tubing and a support arm assembly which is mounted on the apparatus, which extends over the bowl of the centrifuge device, and which has passage means at the free end thereof located centrally of and above the bowl for receiving therethrough the at least one flexible tubing, the improvement residing in said support arm assembly being a pivotal arm assembly which has a base portion fixed to the apparatus and an arm portion pivotally connected to said base portion and pivotal from a first position over the bowl of the centrifuge device to a second position away from the bowl in which second position the bowl can be removed from the centrifuge device.
Claim 2
Dependent Claim
146 words
In an apparatus of the type that includes a centrifuge device having a closed bowl into which liquid is supplied and/or from which liquid is withdrawn by means of at least one flexible tubing and a support arm assembly which is mounted on the apparatus, which extends over the bowl of the centrifuge device, and which has passage means at the free end thereof located centrally of and above the bowl for receiving therethrough the at least one flexible tubing, the improvement residing in said support arm assembly being a pivotal arm assembly which has a base portion fixed to the apparatus and an arm portion pivotally connected to said base portion and pivotal from a first position over the bowl of the centrifuge device to a second position away from the bowl in which second position the bowl can be removed from the centrifuge device.
Claim 3
Dependent Claim
40 words
The support arm assembly according to claim 1 wherein said arm portion is pivotally mounted to said base portion for horizontal movement from a position directly over the bowl to a position to the side of and above the bowl.
Claim 4
Dependent Claim
22 words
The support arm assembly according to claim 1 including movable latching means for mechanically latching said arm portion to said base portion.
Claim 5
Dependent Claim
41 words
The support arm assembly according to claim 3 wherein said latching means is pivotally mounted to said base portion and has a latch portion which engages said arm portion to hold said arm portion in said first position over the bowl.
Claim 6
Dependent Claim
63 words
The support arm assembly according to claim 4 wherein said latch portion includes spaced apart depending flanges which are adapted and arranged to be received over and straddle a segment of said arm portion, and which is movable to and from said first, latching position on said arm portion in a direction which is normal to the pivotal movement of said arm portion.
Claim 7
Dependent Claim
53 words
The support arm assembly according to claim 4 wherein said base portion and said arm portion each have a slot therein, which slots are aligned, end to end, when said latch portion is in said first, latching position and said latch portion has a bar portion which is received in said aligned slots.
Claim 8
Dependent Claim
33 words
The support arm assembly according to claim 6 wherein said arm portion includes means for frictionally engaging said bar portion when said bar portion is received in said slot in said arm portion.
Claim 9
Dependent Claim
38 words
The support arm assembly according to claim 3 wherein said latching means includes light supply means and light pickup means mounted thereon and arranged on either side of a light transmissive portion of the at least one tubing.
Claim 10
Dependent Claim
22 words
The support assembly according to claim 1 including means for holding the at least one flexible tubing on said support arm assembly.
Claim 11
Dependent Claim
52 words
The support arm assembly according to claim 9 for use with an apparatus utilizing several tubings and wherein said holding means includes an elastomeric block having apertures therein through which the flexible tubings extend and being sized to be received in said passage means at said free end of said arm assembly.
Claim 12
Dependent Claim
20 words
The support arm assembly according to claim 10 including means for releasably holding said elastomeric block in said passage means.
Claim 13
Dependent Claim
66 words
The support arm assembly according to claim 9 including movable latching means for mechanically latching said arm portion to said base portion, said latching means including a latch portion, and wherein said holding means includes said latch portion which is configured and arranged to fit over the tubings to hold them between said latch portion and said base and arm portions of said support arm assembly.
Claim 14
Dependent Claim
23 words
The support arm assembly according to claim 4 wherein said latch portion has a handle to facilitate gripping and moving said latch portion.
Claim 15
Dependent Claim
71 words
The support arm assembly according to claim 1 wherein said base portion has a slot therein extending transverse to the pivot axis of said arm portion and opening on a side of said base portion facing said arm portion and said arm portion has a plate portion which is movable into and out of said slot and is received in said slot when said arm assembly is in said first position.
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) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |