EP0329786A1
Expired / Lapsed
EP
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Blood separator
Assignee: Terumo Corp
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Filing: 1987-11-10
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Granted: —
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Expires: 2007-11-10
Abstract
Abstract ©7 Blood separator comprising a blood bag pressurization portion for holding a centrifuged blood bag and pressurizing it at a predetermined pressure, a holding/measuring portion for holding at least two separation bags communicating with the blood bag through a tube and measuring the weights of the separation bags: a limiting portion for limiting the moving quantity of the blood in the tube. disposed at the intermediate part of the tube between the blood bag and each separation bag: a detection portion for detecting the interface level of the blood components in the blood bag held by the blood bag pressurization portion; a moving portion for moving relatively the detection portion to the blood bag; and a control portion for inputting the detection information of the detection portion and/or the measurement information of the holding/measuring portion as part of control information, and controlling the limiting portion.
Inventors
- 👤 Yukihiro Terumo Kabushiki Kaisha Ohnaka
- 👤 Takao Terumo Kabushiki Kaisha Iwasa
- 👤 Tatsuhiko Kawaoka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 02:27
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/02; A61M1/029; A61M2205/00; A61M2205/33; A61M2205/3306; A61M2205/331
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
142 words
A blood separator comprising: blood bag pressurizing means for retaining a centrifuged blood bag and pressurizing the same at a predetermined pressure; bag retaining means for retaining at least two separation bags connecting with said blood bag via a tube means and capable of receiving separated blood components; limiting means provided at intermediate portions of said tube means between said blood bag and said separation bags retained by said retaining means, said limiting means limiting the flows of liquids in said tube means; detection means for detecting the level of an interface between components of blood in said blood bag retained by said blood bag pressurizing means; moving means for moving said detecting means relative to said blood bag; and control means for controlling said limiting means while receiving detection information supplied as an item of control information from said detection means.
Claim 2
Dependent Claim
142 words
A blood separator comprising: blood bag pressurizing means for retaining a centrifuged blood bag and pressurizing the same at a predetermined pressure; bag retaining means for retaining at least two separation bags connecting with said blood bag via a tube means and capable of receiving separated blood components; limiting means provided at intermediate portions of said tube means between said blood bag and said separation bags retained by said retaining means, said limiting means limiting the flows of liquids in said tube means; detection means for detecting the level of an interface between components of blood in said blood bag retained by said blood bag pressurizing means; moving means for moving said detecting means relative to said blood bag; and control means for controlling said limiting means while receiving detection information supplied as an item of control information from said detection means.
Claim 3
Dependent Claim
64 words
A blood separator according to claim 1, wherein said detection means includes light emitting means and light receiving means for receiving light emitted from said light emitting means and transmitted through said blood bag, said detection means detecting the interface from a change in the intensity of the transmitted light due to a difference between compositions of the blood components in said blood bag.
Claim 4
Dependent Claim
58 words
A blood separator according to claim 1, wherein a tube of said tube means extending from said blood bag diverges into a tube connecting with a first one of said separation bag and another tube connecting with second one of said separation bag, and said limiting means limits the flows between the divergence point and said separation bags.
Claim 5
Dependent Claim
34 words
A blood separator according to claim 1, wherein the position of at least one of said bag retaining means for retaining said separation bags is higher than that of said blood bag pressurizing means.
Claim 6
Dependent Claim
31 words
A blood separator according to claim 4, wherein a separated blood component received by one of said separation bag retained at the upper position can be returned to said blood bag.
Claim 7
Dependent Claim
111 words
A blood separator comprising: blood bag pressurizing means for retaining a centrifuged blood bag and pressurizing the same at a predetermined pressure; retention/measurement means for retaining at least two separation bags connecting with said blood bag via tube means and capable of receiving separated blood components, said retention/measurement means measuring the weight of said separation bags; limiting means provided at intermediate portions of said tube means between said blood bag and said separation bags, said limiting means limiting the flows of liquids in said tube means; and control means for controlling said limiting means while receiving information on the weight measured by said retention/measurement means as an item of control information.
Claim 8
Dependent Claim
111 words
A blood separator comprising: blood bag pressurizing means for retaining a centrifuged blood bag and pressurizing the same at a predetermined pressure; retention/measurement means for retaining at least two separation bags connecting with said blood bag via tube means and capable of receiving separated blood components, said retention/measurement means measuring the weight of said separation bags; limiting means provided at intermediate portions of said tube means between said blood bag and said separation bags, said limiting means limiting the flows of liquids in said tube means; and control means for controlling said limiting means while receiving information on the weight measured by said retention/measurement means as an item of control information.
Claim 9
Dependent Claim
58 words
A blood separator according to claim 6, wherein a tube of said tube means extending from said blood bag diverges into a tube connecting with a first one of said separation bag and another tube connecting with second one of said separation bag, and said limiting means limits the flows between the divergence point and said separation bags.
Claim 10
Dependent Claim
34 words
A blood separator according to claim 6, wherein the position of at least one of said bag retaining means for retaining said separation bags is higher than that of said blood bag pressurizing means.
Claim 11
Dependent Claim
31 words
A blood separator according to claim 8, wherein a separated blood component received by one of said separation bag retained at the upper position can be returned to said blood bag.
Claim 12
Dependent Claim
35 words
A blood separator according to claim 9, wherein said control means controls the flow rate on the basis of said information on the weight measured by said retention/measurement means when separated blood component is returned.
Claim 13
Dependent Claim
151 words
A blood separator comprising: blood bag pressurizing means for retaining a centrifuged blood bag and pressurizing the same at a predetermined pressure; retention/measurement means for retaining at least two separation bags connecting with said blood bag via tube means and capable of receiving separated blood components, said retention/measurement means measuring the weight of said separation bags; limiting means provided at intermediate portions of said tube means between said blood bag and said separation bags, said limiting means limiting the flows of liquids in said tube means; detection means for detecting the level of an interface between components of blood in said blood bag retained by said blood bag pressurizing means; moving means for moving said detecting means relative to said blood bag; and control means for controlling said limiting means while receiving, as an item of control information, detection information from said detection means and/or measurement information from said retention/measurement means.
Claim 14
Dependent Claim
151 words
A blood separator comprising: blood bag pressurizing means for retaining a centrifuged blood bag and pressurizing the same at a predetermined pressure; retention/measurement means for retaining at least two separation bags connecting with said blood bag via tube means and capable of receiving separated blood components, said retention/measurement means measuring the weight of said separation bags; limiting means provided at intermediate portions of said tube means between said blood bag and said separation bags, said limiting means limiting the flows of liquids in said tube means; detection means for detecting the level of an interface between components of blood in said blood bag retained by said blood bag pressurizing means; moving means for moving said detecting means relative to said blood bag; and control means for controlling said limiting means while receiving, as an item of control information, detection information from said detection means and/or measurement information from said retention/measurement means.
Claim 15
Dependent Claim
64 words
A blood separator according to claim 11, wherein said detection means includes light emitting means and light receiving means for receiving light emitted from said light emitting means and transmitted through said blood bag, said detection means detecting the interface from a change in the intensity of the transmitted light due to a difference between compositions of the blood components in said blood bag.
Claim 16
Dependent Claim
58 words
A blood separator according to claim 11, wherein a tube of said tube means extending from said blood bag diverges into a tube connecting with a first one of said separation bag and another tube connecting with second one of said separation bag, and said limiting means limits the flows between the divergence point and said separation bags.
Claim 17
Dependent Claim
34 words
A blood separator according to claim 11, wherein the position of at least one of said bag retaining means for retaining said separation bags is higher than that of said blood bag pressurizing means.
Claim 18
Dependent Claim
31 words
A blood separator according to claim 14, wherein a separated blood component received by one of said separation bag retained at the upper position can be returned to said blood bag.
Claim 19
Dependent Claim
33 words
A blood separator according to claim 15, wherein said control means controls the flow rate on the basis of said measurement information from said retention/measurement means when said separated blood component is returned.
References Cited (Backward Citations)
No citation records indexed.
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