Method for body fluid sample extraction
First Claim
1. A method of sampling body fluid from a wound opening created in a skin surface at a sampling site, the method comprising:
- providing an arrangement comprising a plurality of skin-penetration members and a plurality of pre-cocked torsional spring actuators, wherein each of the plurality of torsional spring actuators has a neutral rest position;
automatically or manually initiating a testing sequence;
actuating a first of the plurality of skin-penetration members with a respective torsional spring actuator such that the torsional spring actuator moves from a pre-cocked position to the neutral rest position and drives the skin-penetration member in an arcuate path into the surface of the skin thereby creating the wound opening;
allowing the first skin-penetration member to obstruct the wound opening when the torsional spring actuator is in the neutral rest position; and
transporting body fluid through an inner lumen of the first skin-penetration member.
3 Assignments
0 Petitions
Accused Products
Abstract
An arrangement for producing a sample of body fluid from a wound opening created in a skin surface at a sampling site includes at least one skin-penetration member having a first end configured to pierce the surface of the skin, and a inner lumen in communication with the first end; at least one actuator operatively associated with the at least one skin-penetration member; and at least one catalyst device configured to cause perfusion of body fluid at the sampling site; wherein the at least one actuator is configured to locate the at least one skin-penetration member so as to obstruct the wound opening while transporting body fluid through the inner lumen. Associated methods are also described.
448 Citations
13 Claims
-
1. A method of sampling body fluid from a wound opening created in a skin surface at a sampling site, the method comprising:
-
providing an arrangement comprising a plurality of skin-penetration members and a plurality of pre-cocked torsional spring actuators, wherein each of the plurality of torsional spring actuators has a neutral rest position; automatically or manually initiating a testing sequence; actuating a first of the plurality of skin-penetration members with a respective torsional spring actuator such that the torsional spring actuator moves from a pre-cocked position to the neutral rest position and drives the skin-penetration member in an arcuate path into the surface of the skin thereby creating the wound opening; allowing the first skin-penetration member to obstruct the wound opening when the torsional spring actuator is in the neutral rest position; and transporting body fluid through an inner lumen of the first skin-penetration member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification