Multiple bipolar sampling

Patent metadata

Field	Value
Publication number	US-9615760-B2
Application number	US-201313919229-A
Country	US
Kind code	B2
Filing date	Jun 17, 2013
Priority date	Jun 17, 2013
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

Apparatus, which consists of a plurality of modules. Each of the modules has: an insulating frame, a pair of electrodes fixed to the frame at respective locations that are spaced apart, and circuitry configured to receive signals from the pair of electrodes and in response output a differential signal. The apparatus further consists of an insertion tube having distal and proximal ends and containing the plurality of modules in locations spaced longitudinally in proximity to the distal end. There is cabling running through the tube that is connected to convey differential signals from the modules to the proximal end.

First claim

I claim:

1. Apparatus, comprising:
a plurality of modules, each module comprising:
an insulating frame, the insulating frame comprising a printed circuit board (PCB);
a pair of insulating discs connected to the insulating frame, the pair of insulating discs including a first insulating disc connected at a distal end of the insulating frame and a second insulating disc connected at a proximal end of the insulating frame, the insulating frame longitudinally separating the first insulating disc from the second insulating disc;
a pair of electrodes including a first electrode formed on an outer surface of the first insulating disc and a second electrode formed on an outer surface of the second insulation disc, the pair of electrodes being configured to measure electropotential signals from a myocardium; and
circuitry mounted on the PCB and configured to receive the electropotential_signals from the pair of electrodes and in response output a differential signal;
an insertion tube having distal and proximal ends and containing the plurality of modules in locations spaced longitudinally in proximity to the distal end; and
cabling running through the tube and connected to convey differential signals from the modules to the proximal end.

2. The apparatus according to claim 1 , wherein the cabling comprises a data line and a ground line configured to convey the differential signals.

3. The apparatus according to claim 2 , wherein the data line is configured to convey clock signals and power in addition to the differential signals.

4. The apparatus according to claim 1 , wherein the circuitry comprises a current generator configured to inject current via one of the pair of electrodes into a patient wherein the distal end is inserted, the apparatus further comprising a processor configured to measure different currents received at a surface of the patient in response to the injected current, and to determine a location of the one of the pair of electrodes in response to the measured different currents.

5. The apparatus according to claim 1 , wherein the insertion tube is comprised in a catheter inserted into a heart of a patient, and wherein the differential signals are generated in response to electropotentials acquired by the pair of electrodes due to contact with the heart.

6. The apparatus according to claim 1 , wherein the cabling is connected to the plurality of modules so as to maintain the plurality of modules in the longitudinally spaced locations.

7. The apparatus according to claim 1 , wherein the circuitry is configured to receive signals from one of the pair of electrodes and in response to output a unipolar signal, and wherein the cabling is configured to convey the unipolar signal to the proximal end.

8. The apparatus according to claim 1 , wherein the circuitry comprises a memory configured to store the signals, and a controller, and wherein the controller is configured to delay outputting data from the memory so as to reduce noise.

Assignees

• Biosense Webster Israel Ltd

Inventors

• Lichtenstein Yoav

Classifications

• A61B2562/043

  in a linear array · CPC title

• A61B5/6852

  Catheters · CPC title

• A61B5/7225 Primary

  Details of analogue processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation (input circuits for detecting, measuring, or recording bioelectric or biomagnetic signals A61B5/30; specific diagnostic methods using bioelectric or biomagnetic signals A61B5/316) · CPC title

• A61N1/05

  for implantation or insertion into the body, e.g. heart electrode (A61N1/06 takes precedence) · CPC title

• A61B2560/0481

  in implanted apparatus · CPC title