Exterior insulator for an implantable power source

An electrochemical power source assembly, comprising:

• a) an electrochemical power source comprising:
• i) a casing housing an anode and a cathode in electrochemical association with each other, the casing having an exterior surface with an exterior surface area;
• ii) a first terminal pin connected to one of the anode and the cathode and extending outwardly from a glass-to-metal-seal connected to the casing;
• and
• iii) a second terminal pin connected to the casing and serving as a terminal for the other of the anode and the cathode not connected to the first terminal pin;
• b) a polymeric film cover assembly, comprising:
• i) a first shaped-cover of a polymeric film configured to cover a first portion of the exterior surface of the casing, wherein the first shaped-cover has a first outwardly extending upper web;
• ii) a second shaped-cover of the polymeric film configured to cover a second portion of the exterior surface of the casing, wherein the second shaped-cover has a second outwardly extending upper web;
• iii) a first tab extending outwardly from the first upper web of the first-shaped cover, the first tab having a first opening through which the first terminal pin extends, wherein a first inlet in the second web receives the first tab;
• and
• iv) a second tab extending outwardly from the first upper web of the first-shaped cover, the second tab having a second opening through which the second terminal pin extends, wherein a second inlet in the second web receives the second tab,
• c) wherein, one of the first and second shaped-covers has a pair of spaced-apart slits, and the other of the first and second shaped-covers has a pair of spaced-apart tabs that are received in a respective one of the slits to connect the first and second shaped covers to each other contacting the casing.

An electrochemical power source assembly, comprising:

• a) an electrochemical power source comprising a casing housing an anode and a cathode in electrochemical association with each other, the casing having an exterior surface with an exterior surface area;
• and
• b) a polyester film cover assembly, comprising:
• i) a first shaped-cover of a polyester film configured to cover a first portion of the exterior surface of the casing;
• and
• ii) a second shaped-cover of the polyester film configured to cover a second portion of the exterior surface of the casing,
• iii) wherein, with the first and second shaped-covers contacting the casing, the first and second shaped-covers are connected to each other in an overlapping or butted relationship to substantially cover the exterior surface area of the casing.