Implantable device having one or more screws
AssigneeCochlear Limited
InventorPeter Gibson
Life of this patent
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Abstract
An implantable device for mounting to a patient's bone includes a housing and at least one osseointegrating protuberance. The housing includes a surface having an abutting portion configured to abut the bone when the housing is implanted in the patient, the abutting portion defining a housing axis orthogonal to the surface. The at least one osseointegrating protuberance: extends from the surface of the housing; is adapted to abut the patient's bone; and has a substantially smooth shaft.
Claims29
An implantable device for mounting to a patient's bone, the device comprising:
- a housing assembly including a hermetically sealed housing with a silicone coating;
- and
- at least one screw rotational relative to the housing assembly, wherein
- the at least one screw is adapted to extend into the patient's bone,
- the implantable device is a cochlear implant,
- the at least one screw has a threaded portion,
- the threaded portion has a maximum dimension that is less than a maximum thickness of the housing assembly, and
- at least one of:
- the at least one screw is formed of one of titanium and a titanium alloy;
- or
- the at least one screw has a surface treatment that encourages osseointegration.
An implantable component of a tissue stimulating prosthesis, the implantable component comprising:
- a housing including a silicone rubber coating;
- one or more functional components of the prosthesis, the one or more functional components being mounted in the housing;
- at least one flange, wherein the at least one flange is an extension of the silicone rubber coating of the housing, the at least one flange thus being a silicone rubber flange;
- and
- at least one threaded component extending from the at least one flange, the at least one threaded component being adapted to extend into the patient's bone and turnable relative to the housing, wherein
- the implantable component is a cochlear implant, and
- the at least one threaded component has a threaded portion that has a maximum dimension that is less than a maximum thickness of the housing including the silicone rubber coating.
A method for implanting an implantable device having a silicone rubber coated housing and at least one threaded component, the method comprising:
- forming a pocket or bed or well in a patient's bone to receive the housing;
- positioning the housing in the pocket or bed or well;
- and
- positioning the at least one threaded component by turning the threaded component a plurality of times so as to be in direct contact with the patient's bone, wherein
- the implantable device is a cochlear implant, and
- the at least one threaded component has a threaded portion that has a maximum dimension that is less than a maximum thickness of the silicone rubber coated housing.
An implantable component, comprising:
- an electrode array;
- a housing containing a stimulator unit of the implantable component, the stimulator unit being electrically connected to the electrode array;
- and
- at least one flange and at least one screw, the at least one flange configured to secure the implantable component to bone via the at least one screw extending from the at least one flange to secure the implantable component to the bone, wherein
- the housing has a coating of silicone rubber,
- the at least one flange is an extension of the silicone rubber of the silicone rubber coating the housing, and
- the at least one screw has a threaded portion that has a maximum dimension that is less than a maximum thickness of the combined housing and the silicone coating the housing, wherein
- the implantable component is a cochlear implant.
Dependencies are inferred from the claim text.