IP Library › Granted Patent US 12,679,783
Granted Patent B2
US 12,679,783 · App. 18/784,110 · Granted Jul 14, 2026

Ceramic reinforced metal composite for hermetic bodies for implantable devices

Inventors: Christine A. Frysz (Orchard Park, NY); Dallas J. Rensel (Sanborn, NY); Brian P. Hohl (Clarence, NY); Jonathan Calamel (Clarence, NY); Xiaohong (Shawn) Tang (Williamsville, NY)
Assignee: Greatbatch Ltd.
C04B41/5122A61N1/3754C04B41/0072C04B41/4578C04B41/5177C04B41/88
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Quick Facts
Patent No.
US 12,679,783
App. No.
18/784,110
Granted
Jul 14, 2026
Kind
B2
Abstract

A ceramic reinforced metal composite (CRMC) comprising a composition composite as an interpenetrating network of at least two interconnected composites is described. The interpenetrating networks comprise a ceramic matrix composite (CMC) and a metal matrix composite (MMC). The composition composite is particularly useful as an electrically conductive pathway extending through the insulator or ceramic body of a hermetically sealed component, for example, a feedthrough in an active implantable medical device (AIMD).

Claims (7)

1 . A composite particle powder, consisting of:

a) platinum particles that are mechanically connected and chemically bonded to alumina particles without the alumina particles having been sintered to each other or having undergone a phase change, wherein the mechanically connected and chemically bonded platinum-alumina composite particles are a powder ranging in size from about 1 μm to about 50 μm, and

b) wherein:

i) as exhibited by transmission electron microscopy, an interface between the mechanically connected and chemically bonded platinum-alumina composite particles comprises visible intermingled platinum and alumina atoms that have disorder and dislocation; and

ii) as exhibited by transmission electron microscopy selected area electron diffraction, the crystallographic structure at the interface between the mechanically connected and chemically bonded platinum-alumina composite particles comprises a lattice point row that defines a zone axis intersected by platinum and alumina lattice planes that are parallel; and

iii) as defined by a redistribution of valence charge determined by transmission electron microscopy-electron energy-loss spectroscopy, the mechanically connected and chemically bonded platinum-alumina composite particles have atomic bonding.

2 . The composite particle powder of claim 1 , wherein the platinum and alumina particles are characterized as having been heated to a temperature that ranges from about 350° C. to about 900° C. to mechanically connect and chemically bond the platinum particles to the alumina particles without the alumina particles having been sintered to each other or having undergone a phase change.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 26, 2024
From: FRYSZ, CHRISTINE A.; RENSEL, DALLAS J.; HOHL, BRIAN P.; CALAMEL, JONATHAN; TANG, XIAOHONG
To: GREATBATCH LTD.
Reel/Frame 068397/0882 →
Continuity (3)
Division 17942229 · Sep 12, 2022
Provisional Application 63242514 · Sep 10, 2021
Related Publication 20240383816A1 · Nov 21, 2024
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