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US 12,521,471 B2Granted
Blood bag system and manufacturing method therefor
AssigneeTerumo Kabushiki Kaisha
InventorMasatsugu Igarashi
Life of this patent
Estimating the term…
Abstract
A blood bag system is equipped with a blood collection bag in which blood is accommodated, a parent bag and a child bag in which blood components separated from the blood are accommodated, and flow paths that connect the blood collection bag and the parent bag. The blood collection bag, the parent bag, the child bag, and the flow paths are formed integrally by a first sheet body and a second sheet body that is superimposed on the first sheet body, and meandering sections which are repeatedly folded back on themselves are provided in the flow paths.
Claims20
A blood bag system equipped with a plurality of bags, and flow paths connecting the plurality of bags, the blood bag system comprising:
- a main body portion integrally formed by a first sheet body, and a second sheet body that is superimposed on the first sheet body;
- wherein the main body portion comprises:
- a bag section comprising:
- a first bag configured to accommodate blood;
- and
- a second bag configured to accommodate a blood component contained in the blood;
- and
- a first flow path connecting the first bag and the second bag, the first flow path comprising:
- a first meandering section in which first portions of the first flow path are repeatedly folded back on themselves;
- and
- a second meandering section adjacent to the first meandering section in which second portions of the first flow path are repeatedly folded back on themselves,
- wherein adjacent first portions and adjacent second portions are connected via a plurality of thin-walled cuttable portions that are cuttable along a first direction to separate each adjacent first portion and each adjacent second portion,
- wherein the first meandering section is connected to the first bag at a first edge of the first bag, and the second meandering section is connected to the second bag at a first edge of the second bag,
- wherein of the first bag and the second bag are connected to one another at respective second edges configured to be separatable,
- wherein, when the first bag and the second bag are connected, the first edge of the first bag, the first edge of the second bag, the first meandering section, and the second meandering section are located at a first side of the bag section, and
- wherein the first meandering section and the second meandering section are connected by an additional thin-walled cuttable portion that is cuttable along a second direction perpendicular to the first direction to separate the first meandering section from the second meandering section.
13 more elements
A method of manufacturing a blood bag system, the blood bag system including a main body portion integrally formed by a first sheet body, and a second sheet body that is superimposed on the first sheet body;
- wherein the main body portion comprises:
- a bag section comprising:
- a first bag configured to accommodate blood;
- and
- a second bag configured to accommodate a blood component contained in the blood;
- and
- a first flow path connecting the first bag and the second bag, the first flow path comprising:
- a first meandering section in which first portions of the first flow path are repeatedly folded back on themselves;
- and
- a second meandering section adjacent to the first meandering section in which second portions of the first flow path are repeatedly folded back on themselves,
- wherein adjacent first portions and adjacent second portions are connected via a plurality of thin-walled cuttable portions that are cuttable along a first direction to separate each adjacent first portion and each adjacent second portion,
- wherein the first meandering section is connected to the first bag at a first edge of the first bag, and the second meandering section is connected to the second bag at a first edge of the second bag,
- wherein the first bag and the second bag are connected to one another at respective second edges and configured to be separatable, and
- wherein, when the first bag and the second bag are connected, the first edge of the first bag, the first edge of the second bag, the first meandering section, and the second meandering section are located at a first side of the bag section, and
- wherein the first meandering section and the second meandering section are connected by an additional thin-walled cuttable portion that is cuttable along a second direction perpendicular to the first direction to separate the first meandering section from the second meandering section, the method of manufacturing the blood bag system comprising:
- preparing the first sheet body in which a first bag formation planned portion, a second bag formation planned portion, and a first preprocessing formation planned portion are integrally connected, and the second sheet body in which a third bag formation planned portion, a fourth bag formation planned portion, and a second preprocessing formation planned portion are integrally connected;
- superimposing the second sheet body on the first sheet body;
- and
- fusion bonding the first sheet body and the second sheet body at peripheral edge portions of the first, second, third, and fourth bag formation planned portions and the first and second preprocessing formation planned portions while blowing air between the first sheet body and the second sheet body, to thereby form the first bag, the second bag, and the first flow path respectively;
- wherein, in the fusion bonding step, the first and second meandering sections of the first flow path are formed in the first and second preprocessing formation planned portions.
17 more elements
Dependencies are inferred from the claim text.