Whole blood sampling device
First Claim
Patent Images
1. A blood sampling device comprising:
- a hollow fluid tight tube having an inlet end defining an inlet chamber and an outlet end, the outlet end providing fluid exhaust from the interior of the tube; and
a hollow fiber filter extending within and along a length of the tube, the filter being sealed at a first end thereof proximate to the inlet end and in fluid communication with the outlet end at a second end thereof, wherein the filter includes a plurality of pores sized so as to limit the passage of fluids from the inlet chamber to the interior of the filter to blood plasma.
1 Assignment
0 Petitions
Accused Products
Abstract
A portable hand-held blood sampling device having a self-filling capability includes a blood separation filter. The filter has a plurality of pores sized to permit passage of selected blood constituents such as blood plasma through the device. The device has a separated blood conduit that extends beyond the outlet of the device and is shaped for easy penetration into a self-sealing septum of a blood analyzer. An annular shield extends from the device outlet beyond the conduit to prevent inadvertent contact of the conduit by a user.
-
Citations
19 Claims
-
1. A blood sampling device comprising:
-
a hollow fluid tight tube having an inlet end defining an inlet chamber and an outlet end, the outlet end providing fluid exhaust from the interior of the tube; and
a hollow fiber filter extending within and along a length of the tube, the filter being sealed at a first end thereof proximate to the inlet end and in fluid communication with the outlet end at a second end thereof, wherein the filter includes a plurality of pores sized so as to limit the passage of fluids from the inlet chamber to the interior of the filter to blood plasma. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A blood sampling device comprising:
-
a hollow fluid tight tube having an inlet defining an inlet chamber for receiving blood to be sampled and an outlet, the outlet providing fluid exhaust from the interior of the tube, said inlet chamber defining (a) an inlet chamber wall having a wettable surface; and
(b) a cross sectional area dimensioned such that the inlet chamber is self filling under the influence of capillary action; and
a blood separation filter positioned within the tube and adapted to separate blood elements from the blood and exhaust such separated blood elements through the outlet of the tube. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
Specification