Ultrasonically welded, staked or swaged components in an implantable medical device
First Claim
1. A device, comprising:
- a thermoplastic connector module configured to couple to an implantable medical device;
a first cavity formed in the thermoplastic connector module of an implantable medical device, said first cavity defining a surface opening in the thermoplastic connector module and said surface opening having a geometric periphery;
a pierceable resilient member disposed in the first cavity; and
a perforated thermoplastic lid ultrasonically welded to the geometric periphery of the surface opening and abutting the pierceable resilient member so that said pierceable resilient member is compressed; and
one of a flash-reducing feature and an energy director structure located intermediate a portion of the lid and an opposing portion of the surface opening and further comprising a header module having a major connector port formed therein;
wherein the first cavity comprises a minor port formed in the header module and said first cavity is aligned with a longitudinal axis of the major connector port and wherein the major connector port is configured to receive a proximal end of a medical electrical lead.
1 Assignment
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Accused Products
Abstract
The present invention generally relates to an improved implantable medical device (IMD) and more particularly to an ultrasonically weld perforated lid for an IMD to form a hermetic seal between the IMD and the perforated lid. Appropriately configured perforated lids retain one or more components within a cavity or port formed in a part of an IMD. Such lids preferably secure a pierceable resilient grommet, septum or other resilient member in a cavity or port. When an adjustment instrument, a pull tool or a syringe is temporarily inserted therethrough and later extracted, the resilient member heals (i.e., seals and/or reseals). Preferably, the resilient member abuts a mechanical stop and is compressed slightly during assembly and ultrasonic welding of the lid. The resilient member preferably has a lateral dimension like the cavity or port so that when the lid compresses the resilient member it expands slightly and contacts the interior cavity surfaces thus improving the seal.
93 Citations
11 Claims
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1. A device, comprising:
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a thermoplastic connector module configured to couple to an implantable medical device; a first cavity formed in the thermoplastic connector module of an implantable medical device, said first cavity defining a surface opening in the thermoplastic connector module and said surface opening having a geometric periphery; a pierceable resilient member disposed in the first cavity; and a perforated thermoplastic lid ultrasonically welded to the geometric periphery of the surface opening and abutting the pierceable resilient member so that said pierceable resilient member is compressed; and
one of a flash-reducing feature and an energy director structure located intermediate a portion of the lid and an opposing portion of the surface opening and further comprising a header module having a major connector port formed therein;wherein the first cavity comprises a minor port formed in the header module and said first cavity is aligned with a longitudinal axis of the major connector port and wherein the major connector port is configured to receive a proximal end of a medical electrical lead. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification