Implantable medical device having multi-layer coating
OwnerGopesh Tilvawalainventor
Life of this patent
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Abstract
An implantable medical device includes a body and a coating. The body has a metal surface. The coating is deposited on the metal surface of the body. The coating includes a bonding layer and a polymer layer. The bonding layer includes a first layer comprising a first silane coupling agent and a second layer comprising a second silane coupling agent. The first layer is deposited on the metal surface, and the second layer is deposited on the first layer. The polymer layer is deposited on the second layer. The first silane coupling agent is capable of forming a stronger bond with the metal surface of the body than with the polymer layer. The second silane coupling agent is capable of forming a stronger bond with the polymer layer than the metal surface.
Claims20
An implantable medical device, comprising:
- a body having a metal surface;
- and
- a coating deposited on the metal surface of the body, the coating comprising:
- a bonding layer including a first layer comprising a first silane coupling agent and a second layer comprising a second silane coupling agent, the first layer deposited on the metal surface of the body and the second layer deposited on the first layer;
- and
- a polymer layer deposited on the second layer, wherein the first silane coupling agent is capable of forming a stronger bond with the metal surface of the body than with the polymer layer, and wherein the second silane coupling agent is capable of forming a stronger bond with the polymer layer than the metal surface.
A biostimulator, the biostimulator comprising:
- a housing including a metal surface;
- and
- a coating deposited on the metal surface of the housing, the coating comprising:
- a bonding layer including a first layer comprising a first silane coupling agent and a second layer comprising a second silane coupling agent;
- and
- a barrier layer comprising a polymer, wherein the coating is configured to resist delamination from the metal surface of the biostimulator when the biostimulator is disposed within a liquid environment.
A method, comprising:
- depositing a bonding layer on a metal surface of an implantable medical device, the bonding layer including a first layer comprising a first silane coupling agent and a second layer comprising a second silane coupling agent, the first layer deposited on the metal surface and the second layer deposited on the first layer;
- and
- depositing a polymer layer on the second layer, wherein the first silane coupling agent is capable of forming a stronger bond with the metal surface than with the polymer layer, and wherein the second silane coupling agent is capable of forming a stronger bond with the polymer layer than with the metal surface.
Dependencies are inferred from the claim text.