Blood plasma separating apparatus
AssigneeTerumo Kabushiki Kaisha
InventorAtsuo Nakamura
Life of this patent
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Abstract
A plasma separating apparatus comprising a housing provided with a blood inlet port, a plasma outlet port, and a blood cell outlet port; an rotor rotatably held in the housing; a blood separating space formed between the outside surface of the rotor and the inside surface of the housing and communicating with the blood inlet port at its upper part and with the blood cell outlet port at its lower part; a plasma passage enclosing at least a part of the circumference of the blood separating space and communicating with the plasma outlet port; and a plasma separating membrane disposed so as to partition the blood separating space and the plasma passage.
Claims11
A plasma separating apparatus comprising:
- a housing having a blood inlet port, a plasma outlet port, a blood cell outlet port, and a plasma passage;
- said housing further including:
- a substantially cylindrical inside housing surrounded by a substantially cylindrical outside housing;
- and
- said inside housing having a plurality of plasma passage openings formed in a side wall thereof;
- a rotor rotatably mounted in said inside housing:
- a blood separating space formed between an outside surface of said rotor and an inside surface of said inside housing, said blood separating space being in fluid communication with said blood inlet port at an upper portion of said inside surface of said inside housing, said blood separating space being in fluid communication with said blood cell outlet port at a lower portion of said inside surface of said inside housing;
- said plasma passage being formed between said inside housing and said outside housing, said plasma passage enclosing a circumference of said blood separating space, said plasma passage further being in fluid communication with said plasma outlet port at a lower portion of said outside housing;
- a plasma separating membrane disposed in said inside housing for separating said blood separating space from said plasma passage, said plasma separating membrane being attached to a portion of a side wall of said inside housing so as to cover said plasma passage openings;
- said outside housing further enclosing said portion of said side wall of said inside housing where said plasma separating membrane is attached to said inside housing;
- said inside housing having first and second projections respectively provided substantially at a center of a top and bottom end portion of said inside housing;
- said rotor having a closed top end portion and a closed bottom end portion;
- said closed top end portion of said rotor having a first concavity provided substantially at a center of said closed top end portion of said rotor for receiving a tip end portion of said first projection;
- and
- said closed bottom end portion of said rotor having a second concavity provided substantially at a center of said closed bottom end portion of said rotor for receiving a tip end portion of said second projection.
Dependencies are inferred from the claim text.