Needle placement system
AssigneeMedtronic, Inc.
InventorsBrian W. Ball, Keith A. Miesel, Mary M. Morris, Luis E. Fesser, Jonathan P. Bogott
Life of this patent
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Abstract
A needle and needle system that aids in determining needle position with respect to an implanted device. The system determines needle position by detecting changes in electrical characteristics and the system further may generate a cue to indicate proper needle placement within an implanted device. Methods for detecting needle position with respect to an implanted infusion device are also disclosed.
Claims22
Needle detection system for determining needle position with respect to an implanted infusion device comprising:
- a hollow needle having a sharp distal end;
- a needle electrode located at a first distance along the needle from the distal end;
- a second electrode;
- and
- a detector electrically coupled to the first and second electrode, the detector providing needle insertion position information when the needle is inserted in an implanted medical device.
A position-indicating needle comprising:
- a hollow needle having a sharp distal end;
- and
- a needle electrode located at a first distance along the needle from a distal end;
- and
- a second electrode.
A method for detecting needle position with respect to an implanted infusion device, the method comprising:
- sensing changes in electrical characteristics as the needle enters into an implanted infusion device;
- and
- determining whether the sensed changes in electrical characteristics are indicative of needle entry into the implanted infusion device.
Dependencies are inferred from the claim text.