Blood sampling apparatus and method
First Claim
1. A device for collecting blood from the skin of a patient, the device comprisinga housing having a sampling site, the sampling site defining an opening and having a concave depression,a lancet having a lancet tip adjacent the opening, anda lancet driver operably disposed to the lancet to drive the lancet tip through the opening to lance the skin when the lancet driver is actuated,a sample acquisition module that includes the lancet, a sample chamber and a biosensor, the sample acquisition module being removably coupled to the lancet driver to provide that the sample acquisition module is disposable and the lancet driver is reusable;
- a manually adjustable penetrating member depth selector positioned at an exterior of the housing, wherein the penetrating member depth selector allows user selection of one of several penetration depth settings to limit penetrating depth of the lancet;
the device being configured to allow actuation of the lancet driver, lancing of the skin, collection of the blood, and movement of the blood to the sample reservoir to be integrated.
4 Assignments
0 Petitions
Accused Products
Abstract
Blood samples can be collected without substantial contamination from ambient air, such that the blood sample may be analyzed accurately for gaseous components such as oxygen and carbon dioxide. An embodiment of the device has integrated actuation, lancing, and sample acquisition components, which in some embodiments are miniaturized and/or disposable.
-
Citations
16 Claims
-
1. A device for collecting blood from the skin of a patient, the device comprising
a housing having a sampling site, the sampling site defining an opening and having a concave depression, a lancet having a lancet tip adjacent the opening, and a lancet driver operably disposed to the lancet to drive the lancet tip through the opening to lance the skin when the lancet driver is actuated, a sample acquisition module that includes the lancet, a sample chamber and a biosensor, the sample acquisition module being removably coupled to the lancet driver to provide that the sample acquisition module is disposable and the lancet driver is reusable; -
a manually adjustable penetrating member depth selector positioned at an exterior of the housing, wherein the penetrating member depth selector allows user selection of one of several penetration depth settings to limit penetrating depth of the lancet; the device being configured to allow actuation of the lancet driver, lancing of the skin, collection of the blood, and movement of the blood to the sample reservoir to be integrated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A device for collecting blood from the skin of a patient, the device comprising:
-
a housing having a sampling site, the sampling site defining an opening and having a concave depression; a lancet having a lancet tip adjacent the opening; a lancet driver operably disposed to the lancet to drive the lancet tip through the opening to lance the skin when the lancet driver is actuated; a sample acquisition module that includes the lancet, a sample chamber and a biosensor, the sample acquisition module being removably coupled to the lancet driver to provide that the sample acquisition module is disposable and the lancet driver is reusable; a manually adjustable penetrating member depth selector positioned at an exterior of the housing; the device being configured to allow actuation of the lancet driver, lancing of the skin, collection of the blood, and movement of the blood to the sample reservoir to be integrated and; at least one capillary channel in fluid communication with the opening and the sample reservoir, the capillary channel having a surface, at least a portion of the capillary channel surface being hydrophilic, wherein the sample reservoir comprises a chamber in fluid communication with the opening, the chamber having a perimeter, and a flexible diaphragm attached to the perimeter of the chamber, the flexible diaphragm capable of moving within the chamber under the influence of a pressure source, said movement of the diaphragm serving to facilitate transport of the blood through the at least one capillary channel.
-
Specification