Heat exchanger for medical treatment

A method for manufacturing a heat exchanger for blood, said method comprising the steps of:

• preparing a housing having first and second open ends, and first and second blood ports on a peripheral wall of said housing;
• separately preparing an arranging member having a plurality of through openings for receiving therein heat-exchanging tubes so that said heat-exchanging tubes are arranged to be substantially parallel to each other;
• arranging a first provisionally closing member in said housing near said first open end thereof;
• inserting said arranging member into said housing so as to be separated from said first provisionally closing member by a predetermined distance to form a space therebetween;
• inserting said heat-exchanging tubes into said through openings of said arranging member so that one ends of said heat-exchanging tubes come into contact with said first provisionally closing member;
• arranging a second provisionally closing member in said housing near said second open end thereof so as to come into contact with other ends of said heat-exchanging tubes;
• forming a first partition wall for supporting said one ends of said heat-exchanging tubes by injecting a potting compound into said space through one of said first and second blood ports and allowing the potting compound to solidify;
• removing said first and second provisionally closing members and said arranging member from said housing, and reversing the positions of said first and second provisionally closing members in said housing;
• forming a second partition wall for supporting said other ends of said heat-exchanging tubes by injecting a potting compound into said housing through the other of said first and second blood ports and allowing the potting compound to solidify;
• removing said second provisionally closing member from said housing;
• and
• forming a pair of heat-exchanging medium chambers at opposite end portions of said housing so as to communicate with each other through said heat exchanging tubes.

A method for manufacturing a heat exchanger for blood, said method comprising the steps of:

• preparing a housing having first and second open ends, and first and second blood ports on a peripheral wall of said housing;
• separately preparing an arranging member having a plurality of through openings for receiving therein heat-exchanging tubes so as to allow said heat-exchanging tubes to be arranged substantially parallel to each other;
• arranging a first provisionally closing member in said housing near said first open end thereof;
• inserting said arranging member into said housing so as to be separated from said first provisionally closing member by a predetermined distance;
• inserting said heat-exchanging tubes into said through openings of said arranging member so that one ends of said heat-exchanging tubes come into contact with said first provisionally closing member;
• arranging a second provisionally closing member in said housing near said second open ends thereof so as to come into contact with other ends of said heat-exchanging tubes;
• forming a first partition wall for supporting said one ends of said heat-exchanging tubes by injecting a potting compound into said housing through one of said first and second blood ports and allowing the potting compound to solidify;
• forming a second partition wall for supporting said other ends of said heat-exchanging tubes by injecting a potting compound into said housing through the other of said first and second blood ports and allowing the potting compound to solidify;
• removing said first and second provisionally closing members from said housing;
• and
• forming a pair of heat-exchanging medium chambers at opposite end portions of said housing so as to communicate with each other through said heat exchanging tubes.

A method for manufacturing a heat exchanger for blood, said method comprising the steps of:

• preparing a housing having first and second open ends, and first and second blood ports on a peripheral wall of said housing;
• separately preparing an arranging member having a plurality of through openings for receiving therein heat-exchanging tubes so that said heat-exchanging tubes are arranged to be substantially parallel to each other;
• arranging a first provisionally closing member in said housing near said first open end thereof;
• inserting said arranging member into said housing so as to be separated from said first provisionally closing member by a predetermined distance;
• inserting said heat-exchanging tubes into said through openings of said arranging member so that one ends of said heat-exchanging tubes come into contact with said first provisionally closing member;
• arranging a second provisionally closing member in said housing near said second open end thereof so as to come into contact with other ends of said heat-exchanging tubes;
• forming a first partition wall for supporting said one ends of said heat-exchanging tubes by injecting a potting compound into said housing through one of said first and second blood ports and allowing the potting compound to solidify;
• reversing the positions said first and second provisionally closing members in said housing;
• forming a second partition wall for supporting said other ends of said heat-exchanging tubes by injecting potting compound into said housing through the other of said first and second blood ports to allow the potting compound to solidify;
• removing said second provisionally closing member from said housing;
• and
• forming a pair of heat-exchanging medium chambers at opposite end portions of said housing so as to communicate with each other through said heat exchanging tubes.