Abstract:
Systems, devices and methods allow inductive recharging of a power source located within or coupled to an implantable medical device while the device is implanted in a patient. The implantable medical device in some examples include a receive antenna configuration that may include at least one infinity shaped receive coil. One or more of the receive coils may be formed having a curved shape that conforms to a curvature on an inner surface of a portion of a housing of the implantable medical device so that the receive coil or coils may be positioned adjacent to, and in some examples in direct contact with, some portion of the curved inner surface.
Abstract:
Various embodiments of a hermetically-sealed package and a method of forming such package are disclosed. The package includes a housing that extends along a housing axis between a first end and a second end, where the housing includes first and second opaque portions and a transparent portion disposed between the first and second opaque portions. The first opaque portion is hermetically sealed to a first end of the transparent portion and the second opaque portion is hermetically sealed to a second end of the transparent portion. At least one of the first and second opaque portions is hermetically sealed to the transparent portion by a weld ring. The package further includes a power source disposed within the housing, and an inductive coil disposed at least partially within the transparent portion of the housing and electrically connected to the power source.
Abstract:
Medical devices include a separate enclosure that houses a battery and electrically isolates the battery from external conditions such as any metal enclosures and ultimately isolates the battery from body fluids. Thus, the separate enclosure attaches to a housing of a medical device and provides for modularity of the battery which allows, for instance, different size batteries to be used with the same medical device design. The separate enclosure further prevents stimulation current from leaking back to the battery housing by providing the electrical isolation.
Abstract:
A lead pin fixture is used to align and hold lead pins in place for brazing lead pins to metal contact pads of a ceramic insulator and brazing a ferrule to the ceramic insulator in a single step.
Abstract:
Processes for manufacture and assembly of implantable medical devices are described. In particular, techniques are provided for nondestructive electrical isolation assessment of feedthrough assemblies of the implantable medical devices. The feedthrough assemblies may include an insulating structure, a plurality of terminal pins extending through the insulator and a ferrule having an inner lumen into which the insulating structure is disposed. One or more insulating seals may be disposed at the interface of the ferrule-to-insulating structure and/or the terminal pin-to-insulating structure. The electrical isolation assessments may be based on the dielectric properties of the components of the feedthrough assemblies, such as the insulating structure.
Abstract:
In one example, a capacitor structure may include a capacitor comprising a surface that defines at least one feedthrough aperture and a ceramic insulator layer attached to the surface. The surface of the capacitor may include a capacitor registration feature, and the ceramic insulator layer may include a ceramic insulator layer registration feature. The capacitor registration feature and the ceramic insulator layer registration feature may cooperate to substantially align the ceramic insulator layer to the capacitor, e.g., prior to the ceramic layer being attached to surface of the capacitor.
Abstract:
Feedthrough and method for making a feedthrough. The feedthrough has a ferrule forming a ferrule lumen, an electrically conductive pin extending longitudinally through at least a portion of the ferrule lumen, a filter capacitor surrounding the electrically conductive pin within the ferrule lumen, the filter capacitor having a bonding surface, and a ceramic seal positioned within the ferrule lumen directly abutting the filter capacitor sealing a space between the electrically conductive pin and the ferrule. The ceramic seal adheres to and creates an adhesive bond with the bonding surface of the capacitor and substantially inhibits fluid flow through the ferrule lumen.
Abstract:
Medical devices include fixation structures that include retained portions that provide medical lead fixation within the medical devices. Lead extensions include fixation structures that include retained portions that provide medical lead fixation within the lead extensions. A grip that a clinician may grasp and manipulate is engaged with a nose structure of a header block of the medical device or a connector block of a lead extension and manipulation of the grip causes compression of a deformable structure to ultimately create fixation of the lead or lead extension within the header block or the lead within the extension connector block. The deformable structure may be the retained portion of the fixation structure or alternatively may be separate from the fixation structure.
Abstract:
Systems, devices and methods allow inductive recharging of a power source located within or coupled to an implantable medical device while the device is implanted in a patient. The recharging system/device in some examples includes a first electrical coil and a second electrical coil configured to generate opposing magnetic fields forming a resultant magnetic field within a recharging envelope located between the coils. A third coil of the implantable medical device may be positioned within the recharging envelope so that the resultant magnetic field is imposed on the third coil, causing electrical energy to be induced in the third coil, the induced electrical energy used to recharge a power source of an implantable medical device coupled to the third coil, and/or to power operation of the implantable medical device.
Abstract:
Systems, devices and methods allow inductive recharging of a power source located within or coupled to an implantable medical device while the device is implanted in a patient. The implantable medical device in some examples include a receive antenna configuration that may include at least one infinity shaped receive coil. One or more of the receive coils may be formed having a curved shape that conforms to a curvature on an inner surface of a portion of a housing of the implantable medical device so that the receive coil or coils may be positioned adjacent to, and in some examples in direct contact with, some portion of the curved inner surface.