Laser spot weld winding to connector joint

Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems

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439909, 439874, A61N 105

Patent

active

060615958

ABSTRACT:
A technique is presented for joining an elongated wound element having a plurality of filars and a mating component of a body implantable lead assembly. The wound element has a longitudinally extending interior passage and an end portion extending to a terminal end. The mating component includes a shoulder and an integral post extending away therefrom having an outer surface for receiving the end portion of the wound element, the diameter of the outer surface being smaller than that of the shoulder and larger than the diameter of the interior passage of the wound element. At a location spaced from the terminal end of the wound element, the end portion of the wound element and the receiving portion of the mating component are thermally fused together. This is performed by targeting a laser beam on the end portion of the wound element at a location spaced from the terminal end thereof to melt the wound element and the receiving portion of the mating component and thereby create a weld nugget. In actual fact, the laser beam is targeted at a plurality of circumferentially spaced locations about the end portion of the wound element, the number of such locations being determined by the following relationship:

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