Methods and apparatus for lancet actuation
View Patent ↗A lancet driver is provided wherein the driver exerts a driving force on a lancet during a lancing cycle and is used on a tissue site. The driver comprises of a drive force generator for advancing the lancet and a processor coupled to the drive force generator capable of changing the direction and magnitude of force exerted on the lancet during the lancing cycle. The driver further includes a human interface on the housing providing at least one output for communicating with the patient.
1. A device for detection of an analyte in liquid from a person, comprising:
a support with first and second sides with recesses which define puncturing points on one side of the support;
an analyte sensor coupled to the support;
separating lines that separate individual puncturing/measuring disposable bodies either singly or in groups from the support;
an electronic drive force generator configured to be coupled to and exert a controllable driving force on a lancet during a lancing cycle;
a feedback loop; and
a processor coupled to the feedback loop and drive force generator capable of changing a direction and magnitude of force exerted on the lancet during the lancing cycle and control a depth of penetration of a lancet, the processor actuating the drive force generator to drive the lancet at velocities in time that follow a selectable lancing velocity profile to control depth of penetration, lancet penetration and withdrawal velocity to minimize a lancet from extending below a skin surface to nerves, the processor providing for programmable control of velocity verses a position profile of a lancet.
2. The device of claim 1 , further comprising:
creating depressions in the support material to form a channel suitable for capillary liquid transport.
3. The device of claim 2 , wherein the depressions are formed transversely relative to an advancement direction of the support.
4. The device of claim 2 , wherein the depressions have a rounding at a bottom of the depression.
5. The device of claim 2 , wherein the depressions have a depression base with a triangular contour.
6. The device of claim 2 , wherein depression bases include a hydrophilic coating.
7. The device of claim 1 , wherein both sides of the individual puncturing/measuring disposable bodies are separated in sections from the support along virtual separating lines.
8. The device of claim 7 , wherein the virtual separating lines are selected in accordance with a pre-determinable, selectable division.
9. The device of claim 1 , wherein recesses on the first side are punched out or cut out from the material with first and second edges being formed.
10. The device of claim 1 , wherein recesses on the first side of the support are symmetrical with respect to the separating lines.
11. The device of claim 1 , wherein puncturing points formed on the first side are provided with a cover.
12. The device of claim 1 , wherein the support is a disk.
13. The device of claim 1 , wherein the support is a drum.
14. The device of claim 1 , wherein the support is a bandolier.
15. The device of claim 1 , wherein the support is a magazine.
16. The device of claim 1 , wherein individual puncturing/measuring disposable bodies are separated singly or in groups from the support transversely with respect to an advancement direction of the support along the separating lines.
17. The device of claim 1 , wherein the analyte sensor is positioned near a puncturing point.
18. The device of claim 1 , wherein the puncturing points are sealed.
19. The device of claim 1 , wherein the combined puncturing and measuring device includes lancets with tips configured to penetrate tissue.