US 20030083686A1
(19) United States
(12) Patent Application Publication (io) Pub. No.: US 2003/0083686 Al
Freeman et al. (43) Pub. Date: May 1,2003
(54) TISSUE PENETRATION DEVICE
(76) Inventors: Dominique M. Freeman, La Honda,
CA (US); Dirk Boecker, Palo Alto, CA
(US); Don Alden, Sunnyvale, CA (US);
Barry Dean Briggs, Campbell, CA
(US); Jon Hewitt Leonard, Sunnyvale,
CA (US); Ray Freeman, Cambridge
(GB); George Gogue, Beaverton, OR
(US)
Correspondence Address:
Stephanie Seidman
William B. Anderson
Heller Ehrman White & McAuliffe LLP
4350 La Jolla Village Drive, 7th Floor
San Diego, CA 92122 (US)
(21) Appl. No.: 10/127,395
(22) Filed: Apr. 19, 2002
Related U.S. Application Data
(60) Provisional application No. 60/298,055, filed on Jun. 12, 2001. Provisional application No. 60/298,126, filed on Jun. 12, 2001. Provisional application No.
60/297,861, filed on Jun. 12, 2001. Provisional application No. 60/298,001, filed on Jun. 12, 2001. Provisional application No. 60/298,056, filed on Jun. 12, 2001. Provisional application No. 60/297,864, filed on Jun. 12, 2001. Provisional application No. 60/297, 860, filed on Jun. 12, 2001.
Publication Classification
(51) Int. CI.7 A61B 17 32
(52) U.S. C I 606/181
(57) 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.
