Systems and methods for detecting tissue contact and needle...

Details Systems and methods for detecting tissue contact and needle... Systems and methods for detecting tissue contact and needle...

2006-09-12

2006-09-12

Kennedy, Sharon (Department: 3767)

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

C604S117000

Reexamination Certificate

active

07106574

ABSTRACT:
A system for detecting tissue contact and penetration depth. The system comprises a needle sheath having a needle sheath inner diameter and a needle sheath outer diameter. A first conductive region is disposed on the needle sheath inner diameter. A needle having a needle insulation layer on the outer diameter upon which a second conductive region is disposed within the first conductive region. A dielectric layer is disposed between the first conductive tube and the second conductive tube. A capacitance sensor is coupled to the first conductive region and the second conductive region.

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