Blood Sample Management Using Open Cell Foam

Abstract

A specimen transfer device adapted to receive a blood sample is disclosed. The specimen transfer device includes a housing and an actuation member. A deformable material is disposed within the housing and is deformable from an initial position in which the material is adapted to hold the sample to a deformed position in which at least a portion of the sample is released from the material. A viscoelastic member is disposed within the housing between the material and the housing and between the material and the actuation member. The viscoelastic member is engaged with the actuation member and the material such that movement of the actuation member from a first position to a second position deforms the material from the initial position to the deformed position.

What is claimed is: 
     
         1 . A blood transfer device adapted to receive a blood sample, comprising:
 a housing having a blood inlet port, a blood outlet port separate from the blood inlet port, and an actuation member provided adjacent the blood inlet port of the housing and transitionable between a first position and a second position; and   an open cell foam material disposed within the housing and having a dry anticoagulant powder therein, wherein the actuation member is adapted to encapsulate the open cell foam material within the housing.   
     
     
         2 . The blood transfer device of  claim 1 , further comprising a capillary tube in fluid communication with the open cell foam material. 
     
     
         3 . The blood transfer device of  claim 2 , wherein the capillary tube is adapted to receive the blood sample after the blood sample is mixed with the dry anticoagulant powder within the open cell foam material. 
     
     
         4 . The blood transfer device of  claim 2 , wherein the capillary tube includes a dispensing tip provided at the blood outlet port. 
     
     
         5 . The blood transfer device of  claim 4 , wherein movement of the actuation member from the first position to the second position dispenses the blood sample through the dispensing tip of the capillary tube. 
     
     
         6 . The blood transfer device of  claim 1 , wherein the housing further comprises a lid movable between a closed position in which the open cell foam material is sealed within the housing and the actuation member covers the open cell foam material at the blood inlet port and an open position in which a portion of the open cell foam material is exposed beyond the blood inlet port. 
     
     
         7 . A blood transfer device adapted to receive a blood sample, comprising:
 a housing having a blood inlet port, a blood outlet port separate from the blood inlet port, and an actuation member provided adjacent the blood inlet port of the housing and transitionable between a first position and a second position; and   an open cell foam material disposed within the housing and having a dry anticoagulant powder therein, wherein the actuation member is adapted to encapsulate the open cell foam material within the housing,   wherein, when the actuation member transitions between the first position and the second position, the actuation member rotates about an axis.   
     
     
         8 . The blood transfer device of  claim 7 , further comprising a capillary tube in fluid communication with the open cell foam material. 
     
     
         9 . The blood transfer device of  claim 8 , wherein the capillary tube is adapted to receive the blood sample after the blood sample is mixed with the dry anticoagulant powder within the open cell foam material. 
     
     
         10 . The blood transfer device of  claim 8 , wherein the capillary tube includes a dispensing tip provided at the blood outlet port. 
     
     
         11 . The blood transfer device of  claim 10 , wherein movement of the actuation member from the first position to the second position dispenses the blood sample through the dispensing tip of the capillary tube. 
     
     
         12 . The blood transfer device of  claim 7 , wherein the housing further comprises a lid movable between a closed position in which the open cell foam material is sealed within the housing and the actuation member covers the open cell foam material at the blood inlet port and an open position in which a portion of the open cell foam material is exposed beyond the blood inlet port. 
     
     
         13 . A blood transfer device adapted to receive a blood sample, comprising:
 a housing having a blood inlet port, a blood outlet port separate from the blood inlet port, and an actuation member provided adjacent the blood inlet port of the housing and transitionable between a first position and a second position; and   an open cell foam material disposed within the housing and having a dry anticoagulant powder therein, wherein the actuation member is adapted to encapsulate the open cell foam material within the housing,   wherein, when the actuation member transitions from the first position to the second position, at least a portion of the actuation member moves away from the open cell foam material.   
     
     
         14 . The blood transfer device of  claim 13 , further comprising a capillary tube in fluid communication with the open cell foam material. 
     
     
         15 . The blood transfer device of  claim 14 , wherein the capillary tube is adapted to receive the blood sample after the blood sample is mixed with the dry anticoagulant powder within the open cell foam material. 
     
     
         16 . The blood transfer device of  claim 14 , wherein the capillary tube includes a dispensing tip provided at the blood outlet port. 
     
     
         17 . The blood transfer device of  claim 16 , wherein movement of the actuation member from the first position to the second position dispenses the blood sample through the dispensing tip of the capillary tube. 
     
     
         18 . The blood transfer device of  claim 13 , wherein the housing further comprises a lid movable between a closed position in which the open cell foam material is sealed within the housing and the actuation member covers the open cell foam material at the blood inlet port and an open position in which a portion of the open cell foam material is exposed beyond the blood inlet port.