Method of overmoulding top mounted seal plug cavities
AssigneeCardiac Pacemakers, Inc.
InventorsDaragh Nolan, James M. English, Richard Percy, Sean Walsh, John O'Rourke
Life of this patent
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Abstract
A method includes providing a mold defining a mold cavity for receiving material to be molded into a molded part, positioning an insert at least partially in the mold such that a portion of the insert defines a portion of the mold cavity, and injecting the material into the mold cavity to substantially fill the mold cavity to form the molded part. The molded par can then be removed from the mold and the insert can be removed from the molded part. The mold can include silicone and the insert can include polyoxymethylene.
Claims20
A method comprising:
- providing a mold defining a mold cavity for receiving material to be molded into a molded part, wherein the mold comprises silicone;
- positioning an insert at least partially in the mold such that a portion of the insert defines a portion of the mold cavity, wherein the insert comprises polyoxymethylene;
- injecting the material into the mold cavity to substantially fill the mold cavity to form the molded part;
- removing the molded part from the mold;
- and
- removing the insert from the molded part.
A method comprising:
- providing a mold defining an internal cavity, the internal cavity including a mold cavity for receiving material to be molded into a header for an implantable medical device and including an insert cavity adjacent the mold cavity;
- positioning an insert in the internal cavity so that the insert is entirely contained in the mold, wherein at least a portion of the insert is positioned in the insert cavity, and wherein a surface of the insert defines a portion of a top of the mold cavity;
- injecting the material into the mold cavity to substantially fill the mold cavity to form the header;
- removing the header from the mold;
- and
- removing the insert from the header.
An implantable pulse generator comprising:
- a device housing;
- a header molded to the device housing, wherein the header is formed of an epoxy header material, wherein the header comprises a top surface opposite the device housing and defines a plurality of set screw holes extending into the header on the top surface, and wherein the header comprises a ridge on the top surface between the set screw holes;
- and
- a plurality of seal plugs positioned in the set screw holes so as to fluidically seal the set screw holes, wherein the seal plug has a deformable slit extending through a top of the seal plug through which a tool can be inserted and that is substantially closed to seal and limit fluid flow through the seal plug when the tool is removed.
Dependencies are inferred from the claim text.