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1. WO2002100460 - ELECTRIC LANCET ACTUATOR

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CLAIMS

1. An electric lancet actuator comprising:
a lancet with a distal puncture end and a proximal driver end housed within a stationary housing, said housing comprising an electric energy source for driving said lancet along a predetermined path.

2. An electric lancet actuator according to claim 1 wherein:
said stationary housing further comprises electric field coils.

3. An electric lancet actuator according to claim 2 wherein:
an inner insulating housing separates said electric field coils from said lancet.

4. An electric lancet actuator according to claim 3 wherein:
said inner insulating housing contains rivets such that magnetic poles extend toward said lancet.

5. An electric lancet actuator according to claim 2 or claim 4 wherein:
a metal flag is attached at the proximal driver end of said lancet.

6. An electric lancet actuator according to claim 5 wherein:
said metal flag is perforated with slits.

7. A electric lancet actuator according to claim 2 wherein:
said electric field coils are disposed on a printed circuit board.

8. An electric lancet actuator according to claim 2 wherein:
said electric field coils move said lancet by generating an electromotive force.

9. An electric lancet actuator according to claim 2 wherein:
said electric field coils drive said lancet by application of alternating electromagnetic polarities.

10. An electric lancet actuator according to claim 2 wherein:
said electric field coils are configured as concentric solenoid coils. .

11. An electric lancet actuator according to claim 10 wherein:
an inner insulating housing separates said solenoid coils and said lancet.

12. An electric lancet actuator according to claim 10 or claim 11 wherein:
an iron core is attached at the proximal driver end of said lancet.

13. An electric lancet actuator according to claim 10 wherein:
said solenoid coils move said movable lancet by generating an electromotive force.

14. An electric lancet actuator according to claim 10 wherein:
said solenoids drive said movable lancet by application of alternating electromagnetic polarities.

15. An electric lancet actuator according to claim 1 wherein:
said movable lancet is removable from said stationary housing and is disposable.

16. An electric lancet actuator comprising:
a lancet for puncturing a piece of skin to cause the formation of a droplet of blood; and
a source for generating electromagnetic energy to displace said lancet.

17. A method for sampling blood through a piece of skin comprising the steps of:
advancing a lancet with electromagnetic force from an electric lancet actuator using an electric lancet actuator to propel a lancet into said skin; and
retracting said lancet with electromagnetic force from said electric lancet actuator.