Method of overmoulding top mounted seal plug cavities
AssigneeCardiac Pacemakers, Inc.
InventorsDaragh Nolan, James Michael 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.
Claims21
-20. (canceled)
The method of claim 28, 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.
A method, comprising:
- positioning an insert at least partially into a mold such that a portion of the insert defines a portion of a mold cavity and portions of the mold define other portions of the mold cavity, the insert defining a shape of a ridge on an outer surface of the molded part extending between holes defined by the molded part;
- injecting the material into the mold cavity to substantially 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:
- positioning an insert at least partially into a mold such that a bottom surface of the insert defines a portion of a mold cavity and portions of the mold define other portions of the mold cavity, wherein a top surface of the mold cavity, defined by a top portion of the mold cavity and the portion of the insert, forms a shape of a top surface of the molded part including a raised portion, sunken portions, and a ridge extending between the sunken portions;
- 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.
The method of claim :33, further including:
- positioning a pin in the mold cavity adjacent the insert prior to injecting the material into the mold cavity, wherein the pin defines a shape of a receptacle of the molded part for receiving a lead;
- and
- removing the pin from the molded part after the molded part is formed.
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 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.