Implantable medical device header
First Claim
1. A method of forming a header for an implantable medical device, the method comprising:
- positioning a pre-molding assembly within a first-shot mold, wherein the pre-molding assembly comprises an antenna, an electrode, and an attachment plate, and wherein the first-shot mold defines at least one divot; and
creating a first-shot assembly by introducing a first shot molding material into the first-shot mold, wherein the first-shot assembly comprises the pre-molding assembly at least partially covered by the first-shot molding material, wherein the first-shot assembly comprises at least one protrusion of the first shot molding material extending from a surface of the first-shot assembly and formed by introduction of the first shot molding material into the at least one divot of the first-shot mold,wherein the at least one protrusion extends from a surface of the first-shot assembly opposite the electrode, wherein the at least one protrusion is configured to engage with a wall of a second-shot mold to substantially prevent coverage of the electrode during injection of a second shot molding material into the second-shot mold.
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Accused Products
Abstract
Techniques for forming a header for an implantable medical device via a two-shot molding process are described. The two-shot molding processes may include a first molding step that creates a first-shot assembly and a second molding step that creates a second-shot assembly. The first-shot assembly may be formed to include one or more protrusions configured to interact with a second-shot mold and/or molding material in the second molding step. The second molding step may be configured to overmold the first-shot assembly. The header may include an attachment plate at least partially embedded in molding material and configured to be mechanically coupled to a body of the implantable medical device.
21 Citations
17 Claims
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1. A method of forming a header for an implantable medical device, the method comprising:
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positioning a pre-molding assembly within a first-shot mold, wherein the pre-molding assembly comprises an antenna, an electrode, and an attachment plate, and wherein the first-shot mold defines at least one divot; and creating a first-shot assembly by introducing a first shot molding material into the first-shot mold, wherein the first-shot assembly comprises the pre-molding assembly at least partially covered by the first-shot molding material, wherein the first-shot assembly comprises at least one protrusion of the first shot molding material extending from a surface of the first-shot assembly and formed by introduction of the first shot molding material into the at least one divot of the first-shot mold, wherein the at least one protrusion extends from a surface of the first-shot assembly opposite the electrode, wherein the at least one protrusion is configured to engage with a wall of a second-shot mold to substantially prevent coverage of the electrode during injection of a second shot molding material into the second-shot mold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of forming a header for an implantable medical device, the method comprising:
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positioning a pre-molding assembly within a first-shot mold, wherein the pre-molding assembly comprises an antenna, an electrode, and an attachment plate, and wherein the first-shot mold defines at least one divot; and creating a first-shot assembly by introducing a first shot molding material into the first-shot mold, wherein the first-shot assembly comprises the pre-molding assembly at least partially covered by the first-shot molding material, wherein the first-shot assembly comprises at least one protrusion of the first shot molding material extending from a surface of the first-shot assembly at a first portion of the first-shot assembly and extending between the electrode and an antenna loading structure of the antenna and formed by introduction of the first shot molding material into the at least one divot of the first-shot mold, wherein the at least one protrusion is configured to guide flow of a second-shot molding material introduced proximate to the first portion toward a second, different portion of the first-shot assembly within a second-shot mold.
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11. A header for an implantable medical device, the header comprising:
a first-shot assembly comprising a pre-molding assembly at least partially covered by a molding material, wherein the pre-molding assembly comprises an antenna, an electrode, and an attachment plate, wherein the first-shot assembly comprises at least one protrusion of the first shot molding material extending from a surface of the first-shot assembly and formed by introduction of the first shot molding material into the at least one divot of the first-shot mold, wherein the at least one protrusion extends from a surface of the first-shot assembly opposite the electrode, wherein the at least one protrusion is configured to engage with a wall of a second-shot mold to substantially prevent coverage of the electrode during injection of a second shot molding material into the second-shot mold. - View Dependent Claims (12, 13, 14, 15, 16, 17)
Specification