INSERT MOLDED SHROUD FOR IMPLANTABLE PLATE-TYPE ELECTRODES
First Claim
1. An apparatus used to fabricate a subcutaneous cardiac activity sensing device, comprising:
- a mold having a cavity adapted to receive a biocompatible injection molding material said mold including at least one injection molding pathway coupling an exterior of the mold to said cavity,wherein said cavity comprises a substantially curve-shaped hollow portion and said cavity includes at least two electrode-receiving structures and a like number of elongated conductor-receiving structures, further wherein said structures cooperate to provide electrical communication between an electrode disposed in an electrode-receiving structure and an elongated conductor disposed in a conductor-receiving structure;
at least two electrodes each configured to temporarily mechanically couple to the electrode-receiving structures;
at least two elongated conductors configured to temporarily mechanically couple to the conductor-receiving structures;
at least one fluid entrance port configured to receive an initial supply of a biocompatible injection molding material; and
at least fluid exit port configured to receive an excess amount of the biocompatible injection molding material.
1 Assignment
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Accused Products
Abstract
Apparatus and method according to the disclosure relate to an apparatus and methods for fabricating a shroud member having extra-cardiac sensing electrode coupled thereto and adapted to mechanically and electrically couple to an implantable medical device (IMD). The assembly is used to provide a subcutaneous cardiac activity sensing device via at least a pair of electrodes mechanically coupled to the shroud member. In one embodiment only a major surface portion of the electrodes are exposed to body fluid and tissue. One beneficial aspect of the fabrication techniques herein involve the encapsulation of the elongated conductors and a majority of the electrode surfaces thereby reducing possibility for electrical shorting among the IMD housing and the other conductive members. The assemblies provided according to the disclosure can be fabricated efficiently, inexpensively, quickly and easily using insert-molding techniques.
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Citations
20 Claims
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1. An apparatus used to fabricate a subcutaneous cardiac activity sensing device, comprising:
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a mold having a cavity adapted to receive a biocompatible injection molding material said mold including at least one injection molding pathway coupling an exterior of the mold to said cavity, wherein said cavity comprises a substantially curve-shaped hollow portion and said cavity includes at least two electrode-receiving structures and a like number of elongated conductor-receiving structures, further wherein said structures cooperate to provide electrical communication between an electrode disposed in an electrode-receiving structure and an elongated conductor disposed in a conductor-receiving structure; at least two electrodes each configured to temporarily mechanically couple to the electrode-receiving structures; at least two elongated conductors configured to temporarily mechanically couple to the conductor-receiving structures; at least one fluid entrance port configured to receive an initial supply of a biocompatible injection molding material; and at least fluid exit port configured to receive an excess amount of the biocompatible injection molding material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of fabricating a cardiac sensing shroud assembly for an implantable medical device (IMD), comprising:
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providing a mold adapted for insert-injection-molding operations wherein said mold includes a cavity adapted to receive a biocompatible injection molding material and said mold includes at least one injection molding pathway coupling an exterior of the mold to said cavity, wherein said cavity comprises a substantially curve-shaped hollow portion and said cavity includes at least two electrode-receiving structures and a like number of elongated conductor-receiving structures, further wherein said structures cooperate to provide electrical communication between an electrode disposed in an electrode-receiving structure and an elongated conductor disposed in a conductor-receiving structure; temporarily mechanically coupling at least two electrodes to the electrode-receiving structures within the cavity of the mold; temporarily mechanically coupling at least two elongated conductors to the conductor-receiving structures within the cavity of the mold; and injecting the biocompatible injection molding material into the cavity. - View Dependent Claims (19, 20)
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Specification