Systems and methods for locating a tooth's apical foramen

Details Systems and methods for locating a tooth's apical foramen Systems and methods for locating a tooth's apical foramen

2005-01-18

2005-01-18

Marmor, Charles (Department: 3736)

Surgery

Diagnostic testing

Measuring electrical impedance or conductance of body portion

C600S590000, C433S027000, C033S513000

Reexamination Certificate

active

06845265

ABSTRACT:
An apical foramen locator that a dental or medical practitioner can use to quickly and accurately identify the location of a patient's apical foramen during a dental/medical procedure is provided. The apical foramen locator determines the location of the apical foramen relative to a tool inserted into the patient's tooth by sensing an impedance—typically the voltage across two electrodes—and a stimulus voltage, and retrieving from an impedance map apical foramen location data that corresponds to the sensed impedance. The apical foramen locator can include a power circuit operable to apply a stimulus voltage across two electrodes and a reference resistor, an impedance-sensing circuit operable to read the stimulus voltage, a first voltage across the electrodes and a second voltage across the reference resistor and a processing component operable to derive first and second voltage indices from the stimulus, first and second voltages. Impedance maps can be generated using the apical foramen locator on reference teeth and can be stored in a memory used by the processing component.

REFERENCES:
patent: 3916529 (1975-11-01), Mousseau
patent: 3993044 (1976-11-01), McGuffin
patent: 4273531 (1981-06-01), Hasegawa
patent: 4447206 (1984-05-01), Ushiyama
patent: 4526179 (1985-07-01), Salesky
patent: 5017134 (1991-05-01), Saito et al.
patent: 5049069 (1991-09-01), Salesky
patent: 5080586 (1992-01-01), Kawai
patent: 5211556 (1993-05-01), Kobayashi et al.
patent: 5295833 (1994-03-01), Chihiro et al.
patent: 5759159 (1998-06-01), Masreliez
patent: 5902105 (1999-05-01), Uejima et al.
patent: 6059569 (2000-05-01), Otsuka
patent: 6425875 (2002-07-01), Reifman et al.

Affiliated with

Also associated with

Rating

Systems and methods for locating a tooth's apical foramen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Systems and methods for locating a tooth's apical foramen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Systems and methods for locating a tooth's apical foramen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3395837