Tissue penetration device
3 Assignments
0 Petitions
Accused Products
Abstract
A tissue penetration device and method of using same. The tissue penetration device may optionally include sampling and analyzing functions, which may be integrated. An embodiment provides control of a lancet used for sampling blood. Electric field coils or solenoids may drive the lancet using electromagnetic force. Advancement and retraction of a lancet may be controlled by a feedback loop monitoring the position and velocity of the lancet embodiments of the lancet driver can be configured to follow a predetermined tissue lancing profile. Embodiments of the invention include a lancet and method for using a lancet to maintain the patency of the wound tract once the lancet has cut into the skin.
-
Citations
142 Claims
-
1-138. -138. (canceled)
-
139. A method of determining contact between a tip of a lancet and target tissue of a patient comprising:
-
(a) providing a lancing device comprising a lancet driver having a position sensor and a processor that can determine the relative position and velocity of the lancet based on measuring relative position of the lancet with respect to time;
(b) measuring a magnitude of deceleration of the lancet during at least a portion of the inward cutting stroke of the lancing cycle and comparing the magnitude of the measured deceleration to a known value of deceleration; and
(c) determining contact if the magnitude of the measured deceleration is sufficiently greater than the magnitude of the known value of deceleration. - View Dependent Claims (140, 141)
-
-
142-353. -353. (canceled)
Specification