Granted Patent B2

US 12,465,233 · App. 18/698,255 · Granted Nov 11, 2025

Inventors: Robert Gaul (Dublin, IE); Fiachra Sweeney (Dublin, IE); Stephen Sheridan (Dublin, IE); Andrew Hughes (Dublin, IE); James Tucker (Dublin, IE); Sean Quinlan (Dublin, IE)

Assignee: Foundry Innovation & Research 1, Ltd.

A61B5/036

Abstract

Claims (49)

1 . A multistranded conductor adapted to dynamic in vivo environments, comprising a plurality of wire bundles wrapped together in a wrap direction, wherein:

each wire bundle comprises a core bundle with at least one sub-bundle wrapped around each core bundle in said wrap direction;

each core bundle comprises at least two core wires wrapped around each other in said wrap direction;

each sub-bundle comprises plural first wires wrapped around at least one core wire in said wrap direction; and

said first wires and core wires comprise electrically conductive wires each having a wire diameter of less than about 0.003 inches.

2 . The multistranded conductor of claim 1 , further comprising a central frame member with said wire bundles wrapped together in said wrap direction around the central frame member.

3 . The multistranded conductor of claim 1 , wherein said first wires and core wires have diameters in a range of about 0.001 to about 0.002 inches.

4 . The multistranded conductor of claim 3 , wherein all said core wires and first wires are substantially the same diameter.

5 . The multistranded conductor of claim 1 , comprising three to six wire bundles.

6 . The multistranded conductor of claim 5 , wherein the number of wire bundles is five.

7 . The multistranded conductor of claim 5 , comprising four to eight sub-bundles wrapped around each core bundle.

8 . The multistranded conductor of claim 7 , wherein the number of sub-bundles wrapped around each core bundle is seven.

9 . The multistranded conductor of claim 7 , comprising up to five core wires in each core bundle.

10 . The multistranded conductor of claim 9 , wherein the number of core wires in each core bundle is three.

11 . The multistranded conductor of claim 9 , wherein each sub-bundle comprises four to seven first wires wrapped around said at least one core wire.

12 . The multistranded conductor of claim 11 , wherein each sub-bundle has six first wires wrapped around one core wire.

13 . The multistranded conductor of claim 1 , wherein said first wires and core wires comprise gold wire.

14 . The multistranded conductor of claim 1 , wherein each of said first wires and core wires are individually coated with a friction-reducing coating.

15 . The multistranded conductor of claim 14 , wherein said coating comprises two layers of dissimilar material.

16 . The multistranded conductor of claim 15 , wherein said coating comprises a top layer of PTFE (Polytetrafluoroethylene) or nylon over a layer of polyurethane directly on the wires.

17 . The multistranded conductor of claim 1 , further comprising an outer layer of heat shrink tubing over all said wires.

18 . An implantable medical device, comprising a coil formed of a multistranded conductor according to claim 1 , wherein the multistranded conductor has two opposite ends joined together with an electrical and mechanical connection.

19 . An implantable medical device, comprising a coil formed of a multistranded conductor comprising a plurality of wire bundles wrapped together in a wrap direction, wherein each wire bundle comprises a core bundle with at least one sub-bundle wrapped around each core bundle in said wrap direction, each core bundle comprises at least two core wires wrapped around each other in said wrap direction, each sub-bundle comprises plural first wires wrapped around at least one core wire in said wrap direction, and said first wires and core wires comprise electrically conductive wires each having a wire diameter of less than about 0.003 inches, and wherein the multistranded conductor has two opposite ends joined together with an electrical and mechanical connection, and a capacitor is disposed between and electrically joined to said two opposite conductor ends.

20 . The medical device of claim 18 , wherein said coil is formed with one or more turns of the multistranded conductor around an open center.

21 . The medical device of claim 20 , wherein said coil is wrapped around a frame member.

22 . A method of making a multistranded conductor adapted to dynamic in vivo environments, comprising:

forming plural wire sub-bundles by wrapping plural first wires around at least one core wire in a wrap direction;

wrapping at least two core wires around themselves in said wrap direction;

forming plural core bundles by wrapping plural first wires in said wrap direction around said at least two core wires around themselves;

forming plural wire bundles by wrapping plural said sub-bundles in said wrap direction around a core bundle; and

wrapping plural said wire bundles around themselves in said wrap direction to form the multistranded conductor.

23 . The method of claim 22 , further comprising wrapping said plural wire bundles around themselves on a central frame member.

24 . The method of claim 22 , further comprising individually coating said first wires and said core wires with a friction-reducing coating before said wrapping and forming steps.

25 . The method of claim 24 , wherein said coating comprises an outer layer of PTFE (Polytetrafluoroethylene) or nylon over a layer of polyurethane directly on the wires.

26 . The method of claim 22 , wherein said wrapping plural said wire bundles comprises wrapping three to six wire bundles.

27 . The method of claim 26 , wherein the number of wire bundles is five.

28 . The method of claim 22 , wherein said forming plural sub-bundles comprises wrapping four to seven first wires around said at least one core wire.

29 . The method of claim 28 , wherein each sub-bundle has six first wires wrapped around one core wire.

30 . The method of claim 22 , wherein said forming plural wire bundles comprises wrapping four to eight sub-bundles around each core bundle.

31 . The method of claim 30 , wherein the number of sub-bundles wrapped around each core bundle is seven.

32 . The method of claim 22 , wherein said forming plural core bundles comprises wrapping up to five core wires in each core bundle.

33 . The method of claim 32 , wherein the number of core wires in each core bundle is three.

34 . The multistranded conductor of claim 1 , wherein the multistranded conductor comprises at least 305 individual first wires and core wires and has an overall wire diameter of not greater than 0.04 inches.

35 . The medical device of claim 18 , wherein the multistranded conductor comprises at least 305 individual first wires and core wires and has an overall wire diameter of not greater than 0.04 inches.

36 . The method of claim 22 , wherein the multistranded conductor comprises at least 305 individual first wires and core wires and has an overall wire diameter of not greater than 0.04 inches.

37 . The multistranded conductor of claim 1 , wherein said wrap direction is one of a clockwise direction or a counterclockwise direction.

38 . The method of claim 22 , wherein said wrap direction is one of a clockwise direction or a counterclockwise direction.

39 . The multistranded conductor of claim 1 , wherein each core bundle comprises nine wires wrapped in the wrap direction around the core wires.

40 . The multistranded conductor of claim 10 , wherein each core bundle comprises nine wires wrapped in the wrap direction around the three core wires.

Assignments (1)

Continuity (2)

References Cited (400)