Blood bag system and cassette

A blood bag system comprising:

• a multiple bag including:
• a first bag for reserving whole blood or a blood component;
• a filter having a filter medium for removing predetermined cells from a blood component obtained by centrifugation of the liquid contained in the first bag;
• a second bag for reserving a blood component obtained upon removal of the predetermined cells by the filter;
• a first tube connecting the first bag and an inlet of the filter;
• a second tube connecting the second bag and an outlet of the filter;
• a first clamp movable in a plane toward the first tube to press against and close the first tube and movable in the plane away from the first tube to be spaced from and open the first tube;
• and
• a second clamp movable in the plane toward the second tube to press against and close the second tube and movable in the plane away from the second tube to be spaced from and open the second tube;
• a cassette for holding a part of the first tube, a part of the second tube, the first clamp and the second clamp;
• wherein the cassette has a first clamp operating section different from the first and second clamps and movable in the plane relative to the first clamp for operating the first clamp to move the first clamp in the plane toward the first tube to a position in which the first clamp presses against and closes the first tube, the cassette also having a second clamp operating section different from the first and second clamps and movable in the plane relative to the second clamp for operating the second clamp to move the second clamp in the plane toward the second tube to a position in which the second clamp presses against and closes the second tube;
• the first clamp operating section including an elastic portion possessing elasticity so that a force applied to the first clamp operating section results in the portion of the first clamp operating section being elastically displaced toward the first clamp to operate the first clamp toward the first tube to the position in which the first clamp presses against and closes the first tube;
• the second clamp operating section including an elastic portion possessing elasticity so that a force applied to the second clamp operating section results in the portion of the second clamp operating section being elastically displaced toward the second clamp to operate the second clamp toward the second tube to the position in which the second clamp presses against and closes the second tube;
• the multiple bag and the cassette are pre-assembled and sterilized;
• and
• the blood bag system is a disposable set.

A cassette mounted to a multiple bag comprising:

• a first bag for reserving whole blood or a blood component;
• a filter having a filter medium for removing predetermined cells from a blood component obtained by centrifugation of the liquid contained in the first bag;
• a second bag for reserving a blood component obtained upon removal of the predetermined cells by the filter;
• a first tube connecting the first bag and an inlet of the filter;
• a second tube connecting the second bag and an outlet of the filter;
• wherein the cassette holds a part of the first tube in a first guide passage and a part of the second tube in a second guide passage, the cassette including a first clamp section integrally molded with the cassette and movable relative to the first guide passage and toward the part of the first tube held in the first guide passage to press against the first tube and close the first tube and movable relative to the first guide passage away from the part of the first tube held in the first guide passage and out of pressing contact with the first tube to open the first tube, the cassette also including a second clamp section integrally molded with the cassette and movable relative to the second guide passage and toward the part of the second tube held in the second guide passage to press against the second tube and close the second tube and movable relative to the second guide passage away from the part of the second tube held in the second guide passage and out of pressing contact with the second tube to open the second tube, the first clamp section being different from the first and second guide passages, and the second clamp section being different from the first and second guide passages;
• the multiple bag and the cassette are pre-assembled and sterilized;
• and
• the blood bag system is a disposable set.

A cassette mounted to a multiple bag comprising:

• a first bag for reserving whole blood or a blood component;
• a filter having a filter medium for removing predetermined cells from a blood component obtained by centrifugation of the liquid contained in the first bag;
• a second bag for reserving a blood component obtained upon removal of the predetermined cells by the filter;
• a first tube connecting the first bag and an inlet of the filter;
• a second tube connecting the second bag and an outlet of the filter;
• a first clamp movable in a plane toward the first tube to press against and close the first tube and movable in the plane away from the first tube to be spaced from and open the first tube;
• a second clamp movable in the plane toward the second tube to press against and close the second tube and movable in the plane away from the second tube to be spaced from and open the second tube;
• wherein the cassette holds a part of the first tube, a part of the second tube, the first clamp and the second clamp;
• the cassette including a first clamp operating section different from the first and second clamps, the first clamp operating section comprising a first pressing section and a second pressing section that are spaced apart from one another, the first pressing section being movable in the plane relative to the first clamp upon application of a force to the first pressing section for operating the first clamp to move the first clamp in the plane toward the first tube and into pressing contact with the first tube so that the first clamp closes the first tube and flow through the first tube is prevented, the second pressing section being movable in the plane relative to the first clamp upon application of a force to the second pressing section for operating the first clamp to move the first clamp in the plane to release the pressing contact of the first clamp against the first tube so that flow through the first tube is permitted;
• the cassette also including a second clamp operating section different from the first and second clamps, the second clamp operating section comprising a first pressing section and a second pressing section that are spaced apart from one another, the first pressing section of the second clamp operating section being movable in the plane relative to the second clamp upon application of a force to the first pressing section of the second clamp operating section for operating the second clamp to move the second clamp in the plane toward the second tube and into pressing contact with the second tube so that the second clamp closes the second tube and flow through the second tube is prevented, the second pressing section of the second clamp operating section being movable in the plane relative to the second clamp upon application of a force to the second pressing section of the second clamp operating section for operating the second clamp to move the second clamp in the plane to release the pressing contact of the second clamp against the second tube so that flow through the second tube is permitted;
• the multiple bag and the cassette are pre-assembled and sterilized;
• and
• the blood bag system is a disposable set.

A blood bag system comprising:

• a multiple bag including:
• a first bag for reserving whole blood or a blood component;
• a filter having a filter medium for removing predetermined cells from a blood component obtained by centrifugation of the liquid contained in the first bag;
• a second bag for reserving a blood component obtained upon removal of the predetermined cells by the filter;
• a first tube connecting the first bag and an inlet of the filter;
• and
• a second tube connecting the second bag and an outlet of the filter;
• a cassette comprising a plate section, the plate section possessing a first guide passage holding a part of the first tube and a second guide passage holding a part of the second tube, wherein the cassette has a first clamp section movable relative to the first guide passage and toward the part of the first tube held in the first guide passage to close the first tube and movable relative to the first guide passage away from the part of the first tube held in the first guide passage to open the first tube, the cassette also having a second clamp section movable relative to the second guide passage and toward the part of the second tube held in the second guide passage to close the second tube and movable relative to the second guide passage away from the part of the second tube held in the second guide passage to open the second tube, the first clamp section being different from the first and second guide passages, and the second clamp section being different from the first and second guide passages;
• wherein the first and second clamp sections are provided on the same side of the plate section of the cassette;
• the multiple bag and the cassette are pre-assembled and sterilized;
• and
• the blood bag system is a disposable set.