Electromagnetic interference immune pacing/defibrillation lead
View Patent ↗An electromagnetic interference immune defibrillator lead has a first electromagnetic insulating layer. A first layer is formed on the first electromagnetic insulating layer, the first layer having a plurality of first conductive rings composed of first conductive material, each first conductive ring being separated by first insulating material. A second electromagnetic insulating layer is formed on the first layer. A second layer is, formed on the second electromagnetic insulating layer, the second layer having a plurality of second conductive rings composed of second conductive material, each second conductive ring being separated by second insulating material. A third electromagnetic insulating layer is formed on the second layer. The second conductive rings of second conductive material are positioned such that a second conductive ring overlaps a portion of a first conductive ring and overlaps a portion of a second conductive ring, the second conductive ring being adjacent to the first conductive ring. The second electromagnetically insulating layer is composed of a self-healing dielectric material.
1. An electromagnetic interference immune defibrillation lead, comprising:
a first electromagnetic insulating layer; a first layer, formed on said first electromagnetic insulating layer, said first layer having a plurality of first conductive rings each having a first width and length and being composed of first conductive material, each first conductive ring being separated by a first insulating material having said first length and a second narrower width than said first width;
a second electromagnetic insulating layer formed on said first layer;
a second layer, formed on said second electromagnetic insulating layer, said second layer having a continuous spiraling coil of loops each having said first width and length, said continuous spiraling coil of loops being composed of second conductive material, each loop being separated by a second insulating material having said first length and said second narrower width; and
a third electromagnetic insulating layer formed on said second layer;
said continuous spiraling coil of loops being positioned such that a section of said continuous spiraling coil of loops overlaps a portion of a conductive ring of said first conductive rings and overlaps a portion of an adjacent conductive ring of said first conductive rings.
2. The electromagnetic interference immune defibrillation lead as claimed in claim 1 , wherein said second electromagnetically insulating layer is composed of a self-healing dielectric material.
3. The electromagnetic interference immune defibrillation lead as claimed in claim 2 , wherein said first and second insulating materials are a self-healing dielectric material.
4. The electromagnetic interference immune defibrillation lead as claimed in claim 2 , wherein said first and second insulating material is cellulose triacetate.
5. The electromagnetic interference immune defibrillation lead as claimed in claim 2 , wherein said dielectric material has a threshold greater than voltage induced by magnetic resonance imaging and less than voltage needed to initiate a breakdown of said dielectric material and cause a defibrillation signal to be effectively conducted.
6. The electromagnetic interference immune defibrillation lead as claimed in claim 2 , wherein said dielectric material has a threshold greater than voltage induced by undesired electromagnetic interference and less than voltage needed to initiate a breakdown of said dielectric material and cause a defibrillation signal to be effectively conducted.
7. The electromagnetic interference immune defibrillation lead as claimed in claim 3 , wherein said dielectric material has a threshold greater than voltage induced by magnetic resonance imaging and less than voltage needed to initiate a breakdown of said dielectric material and cause a defibrillation signal to be effectively conducted.
8. The electromagnetic interference immune defibrillation lead as claimed in claim 3 , wherein said dielectric material has a threshold greater than voltage induced by undesired electromagnetic interference and less than voltage needed to initiate a breakdown of said dielectric material and cause a defibrillation signal to be effectively conducted.
9. The electromagnetic interference immune defibrillation lead as claimed in claim 1 , wherein said first, second, and third electromagnetically insulating layers are composed of a self-healing dielectric material.
10. The electromagnetic interference immune defibrillation lead as claimed in claim 9 , wherein said first and second insulating materials are a self-healing dielectric material.
11. The electromagnetic interference immune defibrillation lead as claimed in claim 9 , wherein said first and second insulating material is cellulose triacetate.
12. The electromagnetic interference immune defibrillation lead as claimed in claim 9 , wherein said dielectric material has a threshold greater than voltage induced by magnetic resonance imaging and less than voltage needed to initiate a breakdown of said dielectric material and cause a defibrillation signal to be effectively conducted.
13. The electromagnetic interference immune defibrillation lead as claimed in claim 9 , wherein said dielectric material has a threshold greater than voltage induced by undesired electromagnetic interference and less than voltage needed to initiate a breakdown of said dielectric material and cause a defibrillation signal to be effectively conducted.
14. The electromagnetic interference immune defibrillation lead as claimed in claim 10 , wherein said dielectric material has a threshold greater than voltage induced by magnetic resonance imaging and less than voltage needed to initiate a breakdown of said dielectric material and cause a defibrillation signal to be effectively conducted.
15. The electromagnetic interference immune defibrillation lead as claimed in claim 10 , wherein said dielectric material has a threshold greater than voltage induced by undesired electromagnetic interference and less than voltage needed to initiate a breakdown of said dielectric material and cause a defibrillation signal to be effectively conducted.
16. The electromagnetic interference immune defibrillation lead as claimed in claim 1 , wherein said first and second insulating materials are a self-healing dielectric material.
17. The electromagnetic interference immune defibrillation lead as claimed in claim 16 , wherein said dielectric material has a threshold greater than voltage induced by magnetic resonance imaging and less than voltage needed to initiate a breakdown of said dielectric material and cause a defibrillation signal to be effectively conducted.
18. The electromagnetic interference immune shield as claimed in claim 16 , wherein said dielectric material has a threshold greater than voltage induced by undesired electromagnetic interference and less than voltage needed to initiate a breakdown of said dielectric material and cause a defibrillation signal to be effectively conducted.
19. The electromagnetic interference immune defibrillation lead as claimed in claim 1 , wherein said second electromagnetically insulating layer is composed of cellulose triacetate.
20. The electromagnetic interference immune defibrillation lead as claimed in claim 1 , wherein said first, second, and third electromagnetically insulating layers are composed of cellulose triacetate.
21. The electromagnetic interference immune defibrillation lead as claimed in claim 1 , wherein said first and second insulating material is cellulose triacetate.
22. The electromagnetic interference immune defibrillation lead as claimed in claim 1 , wherein said second electromagnetically insulating layer has a threshold greater than voltage induced by magnetic resonance imaging and less than voltage needed to initiate a breakdown of said second electromagnetically insulating layer and cause a defibrillation signal to be effectively conducted.
23. The electromagnetic interference immune defibrillation lead as claimed in claim 1 , wherein said second electromagnetically insulating layer has a threshold greater than voltage induced by undesired electromagnetic interference and less than voltage needed to initiate a breakdown of said second electromagnetically insulating layer and cause a defibrillation signal to be effectively conducted.