Woven foldable catheter

Patent metadata

Field	Value
Publication number	US-2016338770-A1
Application number	US-201514715958-A
Country	US
Kind code	A1
Filing date	May 19, 2015
Priority date	May 19, 2015
Publication date	Nov 24, 2016
Grant date	—

Abstract

Apparatus, consisting of a catheter having a distal end and a predefined outer diameter. The apparatus also has a plurality of elastic filaments, each filament having at least one electrode fixed thereto and having two ends fixed within the catheter distal end to hold the filament as a loop. The loop intertwines with one or more other loops of the other filaments so that the plurality of the filaments forms an open lattice, which expands when uncompressed to a lattice diameter at least 5 times greater than the outer diameter of the catheter.

First claim

We claim:

1 . Apparatus, comprising:
a catheter having a distal end and a predefined outer diameter; and a plurality of elastic filaments, each filament having at least one electrode fixed thereto and having two ends fixed within the catheter distal end to hold the filament as a loop, which intertwines with one or more other loops of the other filaments so that the plurality of the filaments forms an open lattice, which expands when uncompressed to a lattice diameter at least five times greater than the outer diameter of the catheter.

2 . The apparatus according to claim 1 , wherein the open lattice compresses to fit within a cylinder having a diameter equal to the predefined outer diameter of the catheter.

3 . The apparatus according to claim 1 , wherein the open lattice when uncompressed is sized to be enclosed by a virtual spherical envelope.

4 . The apparatus according to claim 1 , wherein the open lattice when uncompressed is sized to be enclosed by a virtual open conical envelope.

5 . The apparatus according to claim 1 , wherein the open lattice when uncompressed comprises open spaces between the intertwined filaments, and wherein a ratio of a first total area defined by the open spaces and a second total area defined by the filaments is at least 5:1.

6 . The apparatus according to claim 1 , wherein each elastic filament comprises a tube having a lumen, and wherein the at least one electrode is attached to a conductive wire traversing the lumen.

7 . The apparatus according to claim 1 , wherein the lattice diameter comprises a largest distance between selected sections of the plurality of elastic filaments.

8 . A method, comprising:
providing a catheter with a distal end and a predefined outer diameter; and fixing a plurality of elastic filaments within the catheter distal end, each filament having at least one electrode fixed thereto and having two ends fixed within the catheter distal end to hold the filament as a loop, wherein the loop intertwines with one or more other loops of the other filaments so that the plurality of the filaments forms an open lattice, and wherein the open lattice expands when uncompressed to a lattice diameter at least five times greater than the outer diameter of the catheter.

9 . The method according to claim 8 , wherein the open lattice compresses to fit within a cylinder having a diameter equal to the predefined outer diameter of the catheter.

10 . The method according to claim 8 , wherein the open lattice when uncompressed is sized to be enclosed by a virtual spherical envelope.

11 . The method according to claim 8 , wherein the open lattice when uncompressed is sized to be enclosed by a virtual open conical envelope.

12 . The method according to claim 8 , wherein the open lattice when uncompressed comprises open spaces between the intertwined filaments, and wherein a ratio of a first total area defined by the open spaces and a second total area defined by the filaments is at least 5:1.

13 . The method according to claim 8 , wherein each elastic filament comprises a tube having a lumen, and wherein the at least one electrode is attached to a conductive wire traversing the lumen.

14 . The method according to claim 8 , wherein the lattice diameter comprises a largest distance between selected sections of the plurality of elastic filaments.

Assignees

• Biosense Webster Israel Ltd

Inventors

• Bar-Tal Meir
• Garcia Ariel
• Lovejoy Erica Evelyenne
• Highsmith Debby Esther
• Botzer Lior
• Haimovich Roee

Classifications

• A61B2018/00214

  Expandable means emitting energy, e.g. by elements carried thereon · CPC title

• A61B5/6856

  with a distal loop · CPC title

• A61B2017/00044

  Sensing electrocardiography, i.e. ECG · CPC title

• A61B5/6859

  with multiple distal splines · CPC title

• A61B2018/1407

  Loop · CPC title