Tissue penetration device
First Claim
1. A body fluid collection system, comprising:
- a housing with a body fluid sample chamber and a sample transport channel;
a plurality of penetrating members each with a sharpened tip;
a cartridge positionable in the housing;
a penetrating member body positionable in the cartridge;
an advancement device coupled to the penetrating member body and configured to move the penetrating member body in the cartridge to position an un-used penetrating member in a launch position;
a penetrating member driver configured to be coupled to the penetrating member, drive the penetrating member along a movement path to penetrate a skin surface in a first direction during a penetration phase, and withdraw the penetrating member in an opposing second direction during a retraction phase; and
an audible signal generator configured to provide an audible signal of results.
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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.
2163 Citations
7 Claims
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1. A body fluid collection system, comprising:
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a housing with a body fluid sample chamber and a sample transport channel; a plurality of penetrating members each with a sharpened tip; a cartridge positionable in the housing; a penetrating member body positionable in the cartridge; an advancement device coupled to the penetrating member body and configured to move the penetrating member body in the cartridge to position an un-used penetrating member in a launch position; a penetrating member driver configured to be coupled to the penetrating member, drive the penetrating member along a movement path to penetrate a skin surface in a first direction during a penetration phase, and withdraw the penetrating member in an opposing second direction during a retraction phase; and an audible signal generator configured to provide an audible signal of results. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification