Blood collecting apparatus and blood collecting method using blood collecting apparatus

Abstract

A blood collecting apparatus comprises a blood collecting needle 152 ; the blood collecting bag, a first tube whose one end communicates with the blood collecting bag and other end communicates with the blood collecting needle, the branch portion provided on a portion of the first tube, a second tube connected with the branch portion at one end thereof and having a blood take-out port (sampling port); and a flexible resin bag including a third tube communicating with the second tube. The flexible resin bag is capable of accommodating air inside a part of the first tube between the branch portion and the blood collecting needle and air inside the second tube when the blood collecting apparatus is used.

What is claimed is: 
     
       1. A blood collecting apparatus comprising:
 a blood collecting needle for collecting blood from a donor;   a blood collecting bag for accommodating collected blood;   a first tube whose one end communicates with said blood collecting bag and other end communicates with said blood collecting needle;   a first branch portion provided on a portion of said first tube,   a second tube connected with said first branch portion at one end thereof and having a second branch portion provided on a portion of said second tube;   a blood take-out port communicating to one branch port of said second branch portion;   a filter gas-permeable and blood-unpermeable and communicable with an interior of another branch port of said second branch portion; and   a cap for opening and closing said filter.   
     
     
       2. A blood collecting apparatus according to  claim 1 , further comprising a duct-sealing member positioned between said first branch portion and said blood collecting bag and capable of intercepting a duct inside said first tube. 
     
     
       3. A blood collecting apparatus according to  claim 1 , further comprising a duct-sealing member capable of intercepting a duct inside said second tube. 
     
     
       4. A blood collecting apparatus according to  claim 2 , wherein said duct-sealing member consists of a breakable sealing member which opens said duct of each of said first and second tubes when said breakable sealing member is broken or a clamp member which can be opened and closed. 
     
     
       5. A blood collecting apparatus according to  claim 1 , wherein said filter is installed on said one branch port of said second branch portion. 
     
     
       6. A blood collecting apparatus according to  claim 1 , further comprising a reverse flow prevention member allowing a flow from said first branch portion provided on said first tube to said blood take-out port and preventing a flow reverse to said flow from said first branch portion to said blood take-out port. 
     
     
       7. A blood collecting apparatus according to  claim 1 , wherein an area of a sectional surface of said duct inside said second tube is smaller than an area of a sectional surface of said duct inside said first tube. 
     
     
       8. A blood collecting apparatus according to  claim 1 , wherein a needle of a blood collecting tool for a vacuum blood collecting tube can be pierced into said blood take-out port. 
     
     
       9. In a blood collecting apparatus comprising:
 a blood collecting needle for collecting blood from a donor; 
 a blood collecting bag for accommodating collected blood; 
 a first duct whose one end communicates with said blood collecting bag and other end communicates with said blood collecting needle, and introducing said collected blood into said blood collecting bag; 
 a second duct branching from said first duct through a branch portion and having a blood take-out port; and 
 a pressure buffering means for suppressing fluctuation of a pressure of said second duct; 
 wherein said pressure buffering means has a flexible resin bag; 
 wherein said pressure buffering means has a third duct branching from said second duct through a branch portion; and said flexible resin bag is provided at an end of said third duct. 
 
     
     
       10. A blood collecting apparatus according to  claim 9 , wherein said pressure buffering means has a flexible resin bag. 
     
     
       11. A blood collecting apparatus according to claim  10  9, wherein a capacity of said flexible resin bag member is in the range of 1-100 ml. 
     
     
       12. A blood collecting apparatus according to  claim 10 , wherein said pressure buffering means has a third duct branching from said second duct through a branch portion; and said bag member is provided at an end of said third duct. 
     
     
       13. A blood collecting apparatus according to  claim 9 , wherein said pressure buffering means has a filter gas-permeable and blood-unpermeable. 
     
     
       14. A blood collecting apparatus according to  claim 13 , wherein said pressure buffering means has a third duct branching from said second duct through a branch portion; and said filter is provided to said third duct. 
     
     
       15. A blood collecting apparatus according to claim  12  9, further comprising a third duct-sealing member capable of intercepting said third duct. 
     
     
       16. A blood collecting apparatus according to  claim 9 , further comprising a reverse flow prevention member allowing a flow from a branch portion from which said first duct and said second duct branch each other to said blood take-out port and preventing a flow reverse to said flow from said branch portion to said blood take-out port. 
     
     
       17. A blood collecting apparatus according to  claim 9 , further comprising a first duct-sealing member capable of intercepting a portion of said first duct between a branch portion from which said first duct and said second duct branch each other and said blood collecting bag. 
     
     
       18. A blood collecting apparatus according to  claim 17 , wherein said first duct-sealing member consists of a breakable sealing member which opens said first duct when said breakable sealing member is broken. 
     
     
       19. A blood collecting apparatus according to  claim 9 , further comprising a second duct-sealing member capable of intercepting said second duct. 
     
     
       20. A blood collecting apparatus according to  claim 19 , wherein said second duct-sealing member has a breakable sealing member which opens said second duct when said breakable sealing member is broken. 
     
     
       21. A blood collecting apparatus according to  claim 9 , wherein an area of a sectional surface of said second duct is smaller than an area of a sectional surface of said first duct. 
     
     
       22. A blood collecting method to be carried out by using a blood collecting apparatus comprising: a blood collecting needle for collecting blood from a donor; a blood collecting bag for accommodating collected blood; a first tube whose one end communicates with said blood collecting bag and other end communicates with said blood collecting needle; a branch portion provided on a portion of said first tube; a second tube connected with said branch portion at one end thereof and having a blood take-out port at the other end thereof; and a flexible resin bag and having a third tube communicating with said second tube,
 said blood collecting method comprising the steps of:
 piercing a blood collecting needle into a donor when a portion of said first tube positioned between said branch portion and said blood collecting bag is sealed; 
 removing air inside said first and second tubes by introducing an initial flow blood from said donor into a portion of said first tube between said blood collecting needle and said branch portion and into said second tube and by accommodating air inside said portion of the first tube positioned between said blood collecting needle and said branch portion and air inside said second tube in said flexible resin bag; and 
 collecting a predetermined amount of blood from said donor in said blood collecting bag by intercepting communication between said first tube and said flexible resin bag and by communicating said portion of said first tube between said blood collecting needle and said branch portion with a portion of said first tube between said branch portion and said blood collecting bag. 
 
 
     
     
       23. A blood collecting method according to  claim 22 , further comprises the step of sampling blood from said initial flow blood by using said blood take-out port after the step of removing air and before the step of collecting a predetermined amount of blood. 
     
     
       24. A blood cell collecting method according to  claim 23 , wherein the step of sampling blood from said initial flow blood is performed by connecting a vacuum blood collecting tool with said blood take-out port. 
     
     
       25. A blood collecting method according to  claim 23 , wherein the step of sampling blood from said initial flow blood is performed by intercepting communication between said second tube and said flexible resin bag. 
     
     
       26. A blood collecting method to be carried out by using a blood collecting apparatus comprising a blood collecting needle for collecting blood from a donor; a blood collecting bag for accommodating collected blood; a first tube whose one end communicates with said blood collecting bag and other end communicates with said blood collecting needle; a branch portion provided on a portion of said first tube; a second tube connected with said branch portion at one end thereof and having a blood take-out port at the other end thereof; and a filter gas-permeable and blood-unpermeable and communicable with an interior of said second tube,
 said blood collecting method comprising the steps of:
 piercing a blood collecting needle into a donor when a portion of said first tube positioned between said branch portion and said blood collecting bag is sealed; 
 exhausting air inside said first and second tubes from said filter by introducing an initial flow blood from said donor into a portion of said first tube between said blood collecting needle and said branch portion and into said second tube; 
 collecting a predetermined amount of blood from said donor in said blood collecting bag by intercepting communication between said first tube and said filter and by communicating said portion of said first tube between said blood collecting needle and said branch portion with a portion of said first tube between said branch portion and said blood collecting bag. 
   
     
     
       27. A blood collecting method according to  claim 26 , further comprises the step of sampling blood from said initial flow blood by using said blood take-out port after the step of removing air and before the step of collecting a predetermined amount of blood. 
     
     
       28. A blood collecting method according to  claim 27 , wherein the step of sampling blood from said initial flow blood is performed by connecting a vacuum blood collecting tool with said blood take-out port. 
     
     
       29. A blood collecting method according to  claim 25 , wherein the step of sampling blood from said initial flow blood is performed by intercepting communication between said second tube and said filter. 
     
     
       30. A blood collecting apparatus comprising:
 a blood collecting needle for collecting blood from a donor;   a blood collecting bag for accommodating collected blood;   a first tube having one end communicating with said blood collecting bag and another end communicating with said blood collecting needle;   a first branch portion provided on a portion of said first tube;   a second tube having one end connected with said first branch portion and having a second branch portion provided on a portion of said second tube,   a blood take-out port communicating to one branch port of the second branch portion;   a third tube having one end connected with another branch port of said second branch portion,   a filter gas-permeable and blood-unpermeable and provided on said third tube; and   a duct-sealing member provided on said third tube and positioned in a region between said second branch portion and said filter and adapted to intercept a duct inside said third tube.   
     
     
       31. A blood collecting apparatus according to  claim 30 , wherein said duct-sealing member is an openable and closable clamp member. 
     
     
       32. A blood collecting apparatus according to  claim 30 , further comprising a second duct-sealing member positioned between said first branch portion and said blood collecting bag and adapted to intercept a duct inside said first tube. 
     
     
       33. A blood collecting apparatus according to  claim 30 , further comprising a second duct-sealing member adapted to intercept a duct inside said second tube. 
     
     
       34. A blood collecting apparatus according to  claim 33 , wherein said second duct-sealing member includes a breakable sealing member which opens said duct of each of said first and second tubes when said breakable sealing member is broken or an openable and closable clamp member. 
     
     
       35. A blood collecting apparatus according to  claim 30 , further comprising a reverse flow prevention member allowing a flow from said first branch portion to said blood take-out port and preventing a flow reverse to said flow from said branch portion to said blood take-out port. 
     
     
       36. A blood collecting apparatus according to  claim 30 , wherein a needle of a blood collecting tool for a vacuum blood collecting tube can be pierced into said blood take-out port. 
     
     
       37. A blood collecting apparatus comprising:
 a blood collecting needle for collecting blood from a donor, said blood including initial flow blood obtained from the donor;   a blood collecting bag for accommodating collected blood not containing said initial flow blood;   a first duct whose one end communicates with said blood collecting bag and other end communicates with said blood collecting needle, and introducing said collected blood into said blood collecting bag;   a second duct branching from said first duct through a branch portion provided on said first duct and having a blood take-out port for sampling blood from said initial flow blood introduced into said second duct;   a first duct-sealing member capable of intercepting a portion of said first duct between said branch portion and said blood collecting bag and having a breakable sealing member which opens said first duct when said breakable sealing member is broken; and   a pressure buffering means for suppressing fluctuation of a pressure of said second duct, said pressure buffering means having a flexible resin bag communicating to said second duct and accommodating air received from inside a portion of the first duct positioned between said blood collecting needle and said branch portion and air received from inside said second duct by said initial flow blood introduced into said portion of the first duct positioned between said blood collecting needle and said branch portion.   
     
     
       38. A blood collecting apparatus according to claim 37, wherein a capacity of said flexible resin bag is in the range of 1-100 ml. 
     
     
       39. A blood collecting apparatus according to claim 37, further comprising a reverse flow prevention member allowing a flow from said branch portion from which said first duct and said second duct branch each other to said blood take-out port and preventing a flow reverse to said flow from said branch portion to said blood take-out port. 
     
     
       40. A blood collecting apparatus according to claim 37, further comprising a second duct-sealing member for intercepting said second duct. 
     
     
       41. A blood collecting apparatus according to claim 37, wherein said second duct-sealing member has a breakable sealing member which opens said second duct when said breakable sealing member is broken. 
     
     
       42. A blood collecting apparatus according to claim 37, wherein an area of a sectional surface of said second duct is smaller than an area of a sectional surface of said first duct. 
     
     
       43. A blood collecting apparatus comprising:
 a blood collecting needle for collecting blood from a donor, said blood including initial flow blood obtained from the donor;   a blood collecting bag for accommodating collected blood not containing said initial flow blood;   a first duct whose one end communicates with said blood collecting bag and other end communicates with said blood collecting needle, and introducing said collected blood into said blood collecting bag;   a second duct branching from said first duct through a branch portion provided on said first duct and having a blood take-out port for collecting at least some of said initial flow blood;   a pressure buffering means for suppressing fluctuation of a pressure of said second duct; and   a first duct-sealing member for intercepting a portion of said first duct between said branch portion and said blood collecting bag;   wherein said pressure buffering means includes a flexible resin bag for accommodating air received from inside a portion of the first duct positioned between said blood collecting needle and said branch portion and air received from inside said second duct, while said first duct is connected between said blood collecting bag and said blood collecting needle; and   said first duct-sealing member has a breakable sealing member which opens said first duct when said breakable sealing member is broken.