Device and method for variable speed lancet
View Patent ↗A method of penetrating tissue is provided. The method uses a lancet driver to advance a lancet into the tissue; advancing the lancet at a first desired velocity in a first layer of tissue; advancing the lancet at a second desired velocity in a second layer of tissue; and advancing the lancet at a third desired velocity in a third layer of tissue. In one embodiment, the method may including using a processor having logic for controlling velocity of the lancet in each layer of tissue.
1. A lancing system configured to drive a lancet during a lancing cycle and used on a tissue site, the system comprising:
a controllable electronic lancet driver coupled to the lancet;
a position sensor coupled to the controllable electronic lancet driver, the position sensor configured to detect position and velocity of the lancet in the tissue site; and
a processor coupled to said controllable electronic lancet driver, said processor configured to adjust velocity of the lancet to advance the lancet at a first desired velocity in a first layer of tissue, at a second desired velocity in a second layer of tissue, and at a third desired velocity in a third layer of tissue based on feedback of the position and velocity of the lancet from the position sensor.
2. The system of claim 1 further comprising a user interface on said lancet driver allowing a user to adjust penetration depth based on stratum corneum hydration.
3. The system of claim 1 further comprising a user interface on said lancet driver allowing a user to adjust lancet velocity based on user pain.
4. The system of claim 1 further comprising memory for storing at least one of the following to determine a skin profile: energy consumed per lancing event; stratum corneum hydration; time of day of stratum corneum hydration measurement.
5. The system of claim 1 wherein:
said processor has logic for using the lancet driver to advance the lancet into said tissue, said lancet having the lancet velocity equal to the first velocity in the first layer of tissue; adjusting lancet velocity in the skin to achieve the desired velocity based on the layer of tissue through which the lancet is cutting to provide advancement of the lancet at the first desired velocity in the first layer of tissue, at the second desired velocity in the second layer of tissue, and at the third desired velocity in the third layer of tissue.