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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0220828 (2002-06-12) |
등록번호 | US-7316700 (2008-01-08) |
국제출원번호 | PCT/US02/019053 (2002-06-12) |
§371/§102 date | 20020904 (20020904) |
국제공개번호 | WO02/100251 (2002-12-19) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 121 인용 특허 : 1017 |
A lancing device, an embodiment of which controls the advancement and retraction of a lancet by monitoring the position of the lancet in conjunction with a lancet controller which incorporates a feedback loop for modulating the lancet driver to follow a predetermined tissue lancing profile.
The invention claimed is: 1. A lancing device comprising: a lancet with a shaft having a proximal driving end and a distal lancing end; a lancet driver coupled to said lancet for longitudinal displacement of said lancet; and a lancet controller coupled to said lancet driver and configured to change
The invention claimed is: 1. A lancing device comprising: a lancet with a shaft having a proximal driving end and a distal lancing end; a lancet driver coupled to said lancet for longitudinal displacement of said lancet; and a lancet controller coupled to said lancet driver and configured to change a magnitude of force exerted on the lancet during a lancing cycle, said lancet controller including a feedback loop for monitoring a longitudinal displacement and velocity to provide a controlled acceleration of said lancet and for modulating the lancet driver to provide a predetermined tissue lancing profile having characteristic phases for lancet advancement and retraction; and a position sensor coupled to the lancet and to the lancet controller, the position sensor and the lancet controller configured to measure a distance from an initialization point to a point of contact of the lancet to a target tissue surface, the lancet being retracted by the driver to the initialization point with a distance to the target tissue being measured and a depth of penetration of the lancet determined. 2. A lancing device according to claim 1 wherein: said lancet driver comprises a solenoid. 3. A lancing device according to claim 2 wherein: said solenoid drives the lancet with electric current. 4. A lancing device according to claim 3 wherein: said lancet controller comprises additional coil segments disposed adjacent to said solenoid for monitoring the lancet displacement. 5. A lancing device according to claim 1 wherein: said lancet driver including a means for oscillating the lancet to improve the lancet cutting ability. 6. A lancing device according to claim 5 wherein: said oscillating means includes a piezoelectric driver. 7. A lancing device according to claim 6 wherein: said lancet controller controllably varies said tissue lancing profile as a function of impedance changes sensed from said piezoelectric driver resulting from said lancet interacting with said tissue. 8. A lancing device according to claim 5 wherein: said lancet controller comprises a means for sensing a change in lancing pressure to determine the lancet displacement. 9. A lancing device according to claim 1 wherein: said lancet controller comprises a processor for modulating the lancet driver. 10. A lancing device according to claim 9 wherein: said processor comprises memory for storage and retrieval of a set of alternative lancing profiles which the processor uses to modulate the lancet driver. 11. A lancing device according to claim 10 wherein: a user of said lancing device selects the profile desired from the alternative profiles to modulate the lancet. 12. A lancing device according to claim 9 wherein: said processor optimizes said phases of said tissue lancing profile based on information entered by the user of said lancing device. 13. A lancing device according to claim 9 wherein: said processor modulates the lancet driver by comparing an actual profile of the lancet to the profile and maintaining a preset error limit between the actual profile and the profile. 14. A lancing device according to claim 9 wherein: said processor comprises a database for the user. 15. A lancing device according to claim 14 wherein: said database allows the calculation of statistics for a profile. 16. A lancing device according to claim 9 or 14 wherein: said processor comprises an internal clock which links the lancing event with a time stamp. 17. A lancing device according to claim 9 wherein: said processor calculates an appropriate lancet diameter and geometry to collect a blood volume required by the user. 18. A lancing device according to claim 1 wherein: said feedback loop further comprises a light detecting sensor and a light emitter for monitoring the relative position of said lancet. 19. A lancing device according to claim 1 wherein: said feedback loop further comprises an electromagnetic sensor for monitoring the relative position of at least one magnetically permeable region disposed on a region of said shaft, said sensor comprising at least one solenoid.
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