IP Library › Granted Patent US 12,458,436
Granted Patent B2
US 12,458,436 · App. 16/502,020 · Granted Nov 4, 2025

Flexible-circuit tip for a split-tip catheter

Inventors: Anand Rao (Tustin, CA); Christopher T. Beeckler (Brea, CA); Rajesh Pendekanti (Chino Hills, CA); Keshava Datta (Chino Hills, CA)
Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
A61B18/1492A61B5/287A61B5/33A61N1/056A61B5/4836A61B2018/00351A61B2018/00577A61B2562/227
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Quick Facts
Patent No.
US 12,458,436
App. No.
16/502,020
Filed
Jul 2, 2019
Granted
Nov 4, 2025
Kind
B2
Art Unit
3794
USPC
606/41
Abstract

A catheter tip may be a fabricated as a planar flexible circuit, e.g., via lithography, as having a first planar segment and a second planar segment that includes various electrodes on different sectors that are insulated from each other. The tip may be deformed to have a non-planar configuration, e.g., cylindrical, and then assembled onto a catheter. The catheter may be used to monitor ECG signals and temperature and to precisely deliver ablative energy to tissues via the various electrodes. ECG signals and temperature may be monitored for one sector while ablation energy is being delivered to another sector.

Claims (24)

1 . A flexible circuit, comprising:

a first planar segment comprising a plurality of teeth arranged in a geared pattern and a plurality of holes disposed entirely through the first planar segment, the first planar segment having a first portion and a second portion, in which the plurality of holes are positioned in the second portion; and

a second planar segment comprising:

a first layer including a non-conductive substrate,

a second layer including conductive materials comprising at least a first temperature sensor, a second temperature sensor, and a conductor element,

a third layer including an insulator,

a first sector comprising a first portion of the first layer, a first portion of the second layer, and a first portion of the third layer, and

a second sector comprising a second portion of the first layer, a second portion of the second layer, and a second portion of the third layer,

in which the flexible circuit is configured to be formed onto a core of a catheter body, the core having a lateral surface, a base disposed perpendicular to the lateral surface, and a curved surface connecting the lateral surface to the base, such that the second planar segment conforms to the lateral surface and such that the first portion of the first planar segment conforms to the base and the second portion of the first planar segment conforms to the curved surface.

2 . The flexible circuit of claim 1 , further comprising a first space disposed only through the conductive materials of the second layer between the first sector and the second sector.

3 . The flexible circuit of claim 2 , further comprising a first insulation material disposed within the first space.

4 . The flexible circuit of claim 3 , in which the first temperature sensor and the second temperature sensor are disposed in the first sector, and a third temperature sensor and a fourth temperature sensor are disposed in the second sector.

5 . The flexible circuit of claim 4 , in which the second planar segment further includes a third sector, the third sector having a fifth temperature sensor and a sixth temperature sensor, and in which the second layer comprises a second space disposed only through the conductive materials of the second layer between the second sector and the third sector.

6 . The flexible circuit of claim 5 , in which the conductor element includes a trace connected to an ablation electrode.

7 . The flexible circuit of claim 6 , in which the first sector, the second sector, and the third sector each include a respective solder pad having a first contact operatively coupled to a respective thermocouple, a second contact operatively coupled to another respective thermocouple, and a third contact operatively coupled to a respective electrode.

8 . The flexible circuit of claim 7 , in which the first planar segment includes a first-segment substrate and a first-segment insulator.

9 . The flexible circuit of claim 8 , in which the first planar segment further includes a first-segment temperature sensor.

10 . The flexible circuit of claim 9 , in which the first planar segment further includes a first-segment electrode.

11 . The flexible circuit of claim 3 , in which the insulator comprises polyamide, polyimide, liquid crystal polymer, or polyurethane.

12 . The flexible circuit of claim 3 , in which the first insulation material includes a high-temperature epoxy.

13 . The flexible circuit of claim 3 , in which the insulator of the third layer comprises a ceramic material.

14 . The flexible circuit of claim 1 , in which the lateral surface of the core comprises a cylindrical shape.

15 . The flexible circuit of claim 14 , in which the first layer consists a single non-conductive substrate.

16 . The flexible circuit of claim 14 , in which the first sector and the second sector of the second planar segment are spaced from each other such that, when conformed to the lateral surface of the core, the first sector and the second sector are spaced from each other.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 22, 2019
From: RAO, ANAND; BEECKLER, CHRISTOPHER T.; PENDEKANTI, RAJESH; DATTA, KESHAVA
To: BIOSENSE WEBSTER (ISRAEL) LTD.
Reel/Frame 050787/0800 →
Continuity (2)
Provisional Application 62711708 · Jul 30, 2018
Related Publication 20200030024A1 · Jan 30, 2020
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