Implantable medical device with motion damping layer
AssigneeCardiac Pacemakers, Inc.
InventorsArild Vedoy, Benjamin J. Haasl, Katherine Provo, Shane McGrath
Life of this patent
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Abstract
Implantable medical devices are constructed with a dampening layer to limit motion of components inside a housing of the implantable medical devices. The dampening layer may have features to provide thermal isolation for certain components. The dampening layer may have features to allow mechanical vibration of selected components. The dampening layer may have features to ensure an air space exists to enable a residual gas analysis test.
Claims20
An implantable medical device (IMD) comprising a housing and, inside the housing:
- operational circuitry for performing one or more IMD functions;
- a battery coupled to the operational circuitry to provide power for the one or more IMD functions, the battery including a header region containing electrical connections to a battery feedthrough pin, the battery feedthrough pin used for electrical connection from inside the battery to the operational circuitry;
- a dampening layer molded over portions of the operational circuitry and at least a first portion of the battery,
- wherein the dampening layer comprises a first void positioned over the header region of the battery to provide thermal isolation to the header region of the battery.
An implantable medical device (IMD) comprising a housing and, inside the housing, each of:
- operational circuitry for performing one or more IMD functions;
- a battery coupled to the operational circuitry to provide power for the one or more IMD functions, the battery including a header region containing electrical connections to a battery feedthrough pin, the battery feedthrough pin used for electrical connection from inside the battery to the operational circuitry;
- a dampening layer molded over portions of the operational circuitry and at least a first portion of the battery, wherein the dampening layer comprises a first void positioned for use in a residual gas analysis test.
An implantable medical device (IMD) comprising:
- an operational circuitry including at least first and second components;
- a printed circuit board assembly (PCBA) to which each of the at least first and second components are secured;
- a housing;
- and
- a dampening layer contained within the housing having first and second dampening layer portions, the second dampening layer portion having a higher thermal conductivity than the first dampening layer portion, wherein:
- the second dampening layer portion surrounds or is adjacent to the first component to spread and/or dissipate heat generated by the first component;
- and
- the second dampening layer portion limits heat transfer via the PBCA from the first component to the second component.
Dependencies are inferred from the claim text.