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US 11,058,883 B2Granted
Feedthrough assembly
AssigneeMedtronic, Inc.
InventorsBrad C. Tischendorf, Andrew J. Thom
Life of this patent
Estimating the term…
Abstract
A feedthrough assembly includes: a ferrule; an insulating structure; and a seal fixedly securing the insulating structure within the ferrule, the seal comprising a glass and single-phase particulate dispersed therein; wherein the glass includes: 25% to 40% B2O3; 0 to 25% CaO; 0 to 25% MgO; 0 to 25% SrO; 0 to 10% La2O3; 5% to 15% SiO2; and 10% to 20% Al2O3; wherein all percentages are mole percentages of the glass.
Claims23
A feedthrough assembly, comprising:
- a ferrule;
- an insulating structure;
- a first glass seal fixedly securing the insulating structure within the ferrule,
- the first glass seal comprising a filled glass comprising a first glass having a first composition and first single-phase particulate dispersed therein,
- the first single-phase particulate comprising particles having a second composition different from the first composition;
- wherein the first glass comprises:
- 25% to 40% B2O3;
- 0 to 25% CaO;
- 0 to 25% MgO;
- 0 to 25% SrO;
- 0 to 10% La2O3;
- 5% to 15% SiO2;
- and
- 10% to 20% Al2O3;
- at least one terminal pin;
- and
- a second glass seal sealing the at least one terminal pin with the insulating structure,
- wherein the second glass seal comprises a filled glass comprising a second glass and second single-phase particulate dispersed therein;
- wherein the second glass comprises:
- 25% to 40% B2O3;
- 0 to 25% CaO;
- 0 to 25% MgO;
- 0 to 25% SrO;
- 0 to 10% La2O3;
- 5% to 10% SiO2;
- and
- 10% to 20% Al2O3,
- wherein all percentages are mole percentages of the glass.
25 more elements
A feedthrough assembly, comprising:
- a ferrule;
- an insulating structure comprising a top portion,
- a bottom portion,
- and an inner diameter portion,
- wherein the inner diameter portion defines at least one aperture extending from the top portion to the bottom portion;
- at least one terminal pin extending through the at least one aperture;
- a glass seal fixedly securing the at least one terminal pin with the insulating structure,
- the glass seal comprising a filled glass comprising a glass having a first composition and preformed single-phase particulate dispersed therein,
- the preformed single-phase particulate comprising particles having a second composition different from the first composition;
- wherein the glass comprises:
- 25% to 40% B2O3;
- 0 to 25% CaO;
- 0 to 25% MgO;
- 0 to 25% SrO;
- 0 to 10% La2O3;
- 5% to 15% SiO2;
- and
- 10% to 20% Al2O3;
- and
- a second glass seal sealing the at least one terminal pin with the insulating structure,
- wherein the second glass seal comprises a filled glass comprising a second glass and second single-phase particulate dispersed therein;
- wherein the second glass comprises:
- 25% to 40% B2O3;
- 0 to 25% CaO;
- 0 to 25% MgO;
- 0 to 25% SrO;
- 0 to 10% La2O3;
- 5% to 10% SiO2;
- and
- 10% to 20% Al2O3
- wherein all percentages are mole percentages of the glass.
28 more elements
Dependencies are inferred from the claim text.