Medical devices including metallic connector enclosures

• US 9,144,689 B2
• Filed: 12/19/2011
• Issued: 09/29/2015
• Est. Priority Date: 12/28/2010
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Deininger, Steven T., Clayton, Jeffrey, Peters, Charles E.
• Primary Examiner(s): Leon, Edwin A.
• Application Number:
  US13/976,401
• Publication Number:
  US 20140295688A1
• Time in Patent Office: 1,380 Days
• Field of Search: 439/620.09, 439/668, 439/909, 439/527, 439/271, 439/660, 600/378, 607/116, 607/37, 607/38, 607/57, 607/137, 298/25, 298/57, 298/77, 298/79
• US Class Current: 1/1
• CPC Class Codes: A61N 1/3718 Monitoring of or protection against external electromagnetic fields or currents
• CPC Class Codes: A61N 1/3752 Details of casing-lead connections
• CPC Class Codes: A61N 1/3754 Feedthroughs
• CPC Class Codes: B23K 2101/36 Electric or electronic devices
• CPC Class Codes: B23K 2103/14 Titanium or alloys thereof
• CPC Class Codes: B23K 26/24 Seam welding
• CPC Class Codes: B23K 26/32 taking account of the properties of the material involved
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

Medical devices provide metallic connector enclosures. The metallic connector enclosures may be constructed with relatively thin wails in comparison to polymer connector enclosures to aid in miniaturizing the medical device. The metallic connector enclosures may be constructed with interior surfaces that deviate less from an ideal inner surface shape in comparison to polymer connector enclosures to allow for better concentricity of electrical connectors. The metallic connector enclosures may include a panel that allows access to the cavity of the connector enclosure where set screw blocks, lead connectors, spacers, seals, and the like may be located. Furthermore, the lead connectors within the metallic connector enclosures may be separated from the metallic connector enclosure by being positioned within non-conductive seals that reside within features included in cavity walls of the connector enclosure. Similarly, set screw blocks may be separated from the metallic connector enclosure by non-conductive spacers present within the cavity.

Claims

1. A method of constructing a medical device, comprising:

providing a can that houses medical circuitry;

providing electrical connectors within the can and electrically connected to the medical circuitry;

providing a metallic connector enclosure comprising a metallic body having a metallic base and metallic walls and defining a cavity and a metallic panel welded to at least one of the metallic walls of the metallic body and covering the cavity, the body including an opening to the cavity;

providing lead connectors within the cavity and in alignment with the opening, the lead connectors being positioned between the metallic body and the metallic panel;

providing electrical conductors that are electrically connected to the lead connectors within the cavity and that are electrically isolated from the metallic connector enclosure while being exposed outside of the metallic connector enclosure;

placing a portion of the can in contact with a metallic edge of the metallic connector enclosure such that the electrical connectors within the can and the electrical conductors exposed outside the metallic connector enclosure are in contact and are contained by a housing created by the contact of the can and the metallic connector enclosure; and

creating a bond at the contact of the portion of the can and the metallic edge of the metallic connector enclosure.

2. The method of claim 1, wherein the can has an opening defined by an edge and where creating the bond is done so that the metallic base covers the opening.

3. The method of claim 1, wherein the can is fully metallic.

4. The method of claim 1, further comprising providing at least one feedthrough filter plate bonded to the metallic base, the feedthrough filter plate including a plurality of feedthrough pin passageways that receive the feedthrough pins, the feedthrough filter plate including conductors that are capacitively coupled to the feedthrough pins.

5. The method of claim 1, wherein the metallic body comprises titanium.

6. The method of claim 5, wherein the titanium is grade 5.

7. The method of claim 1, wherein the metallic panel is titanium.

8. The method of claim 7, wherein the titanium panel comprises grade 1.

9. The method of claim 1, wherein the bond is a metallic weld.

10. The method of claim 9, wherein the metallic weld is a laser seam weld.

11. A method of constructing a medical device, comprising:

providing a can that houses medical circuitry;

providing electrical connectors within the can and electrically connected to the medical circuitry;

providing a metallic connector enclosure having a metallic base and walls and defining a cavity and including an opening to the cavity, the metallic connector enclosure including walls with portions of at least one wall having a thickness of 25 thousandths of an inch or less;

providing lead connectors within the cavity and in alignment with the opening;

providing electrical conductors that are electrically connected to the lead connectors within the cavity and that are electrically isolated from the metallic connector enclosure while being exposed outside of the metallic connector enclosure;

placing a portion of the can in contact with a metallic edge of the metallic connector enclosure such that the electrical connectors within the can and the electrical conductors exposed outside the metallic connector enclosure are in contact and are contained by a housing created by the contact of the can and the metallic connector enclosure; and

creating a bond at the contact of the portion of the can and the metallic edge of the metallic connector enclosure.

12. A method of constructing a medical device, comprising:

providing a can that houses medical circuitry;

providing electrical connectors within the can and electrically connected to the medical circuitry;

providing a metallic connector enclosure having a metallic base and internal walls defining a cavity with the metallic connector enclosure including an opening to the cavity;

providing a plurality of lead connectors within the cavity and in alignment with the opening, each of the lead connectors being surrounded by a seal, each of the seals separating the lead connectors from the internal walls where a centerline of each lead connector varies by 8 thousandths of an inch or less from the centerline of every other lead connector;

providing electrical conductors that are electrically connected to the lead connectors within the cavity and that are electrically isolated from the metallic connector enclosure while being exposed outside of the metallic connector enclosure;

placing a portion of the can in contact with a metallic edge of the metallic connector enclosure such that the electrical connectors within the can and the electrical conductors exposed outside the metallic connector enclosure are in contact and are contained by a housing created by the contact of the can and the metallic connector enclosure; and

creating a bond at the contact of the portion of the can and the metallic edge of the metallic connector enclosure.

13. A method of constructing a medical device, comprising:

providing a can that houses medical circuitry;

providing electrical connectors within the can and electrically connected to the medical circuitry;

providing a metallic connector enclosure comprising a metallic body with a metallic base and walls defining a cavity, the body including an opening to the cavity, the cavity having a recess;

providing non-conductive lead connector spacers within the recess;

providing lead connectors within the cavity and in alignment with the opening, the lead connectors being disposed within the non-conductive lead connector spacers;

providing electrical conductors that are electrically connected to the lead connectors within the cavity and that are electrically isolated from the metallic connector enclosure while being exposed outside of the metallic connector enclosure;

placing a portion of the can in contact with a metallic edge of the metallic connector enclosure such that the electrical connectors within the can and the electrical conductors exposed outside the metallic connector enclosure are in contact and are contained by a housing created by the contact of the can and the metallic connector enclosure; and

creating a bond at the contact of the portion of the can and the metallic edge of the metallic connector enclosure.

14. A medical device, comprising:

a can that houses medical circuitry;

electrical connectors within the can and electrically connected to the medical circuitry;

a metallic connector enclosure comprising a metallic body having a metallic base and metallic walls and defining a cavity and a metallic panel welded to at least one of the metallic walls of the metallic body and covering the cavity, the body including an opening to the cavity;

lead connectors within the cavity and in alignment with the opening, the lead the connectors being positioned between the metallic body and the metallic panel; and

electrical conductors that are electrically connected to the lead connectors within the cavity and that are electrically isolated from the metallic connector enclosure while being exposed outside of the metallic connector enclosure;

wherein a portion of the can is in contact with a metallic edge of the metallic connector enclosure such that the electrical connectors within the can and the electrical conductors exposed outside the metallic connector enclosure are in contact and are contained by a housing created by the contact of the can and the metallic connector enclosure, and wherein a bond is present at the contact of the portion of the can and the metallic edge of the metallic connector enclosure.

15. A medical device, comprising:

a can that houses medical circuitry;

electrical connectors within the can and electrically connected to the medical circuitry;

a metallic connector enclosure having a metallic base and walls defining a cavity and including an opening to the cavity, the metallic connector enclosure including walls with portions of at least one wall having a thickness of 25 thousandths of an inch or less;

lead connectors within the cavity and in alignment with the opening;

electrical conductors that are electrically connected to the lead connectors within the cavity and that are electrically isolated from the metallic connector enclosure while being exposed outside of the metallic connector enclosure;

wherein a portion of the can is in contact with a metallic edge of the metallic connector enclosure such that the electrical connectors within the can and the electrical conductors exposed outside the metallic connector enclosure are in contact and are contained by a housing created by the contact of the can and the metallic connector enclosure, and wherein a bond is present at the contact of the portion of the can and the metallic edge of the metallic connector enclosure.

16. A medical device, comprising:

a can that houses medical circuitry;

electrical connectors within the can and electrically connected to the medical circuitry;

a metallic connector enclosure having a metallic base and internal walls defining a cavity with the metallic connector enclosure including an opening to the cavity;

a plurality of lead connectors within the cavity and in alignment with the opening, each of the lead connectors being surrounded by a seal, each of the seals separating the lead connectors from the internal walls where a centerline of each lead connector varies by 8 thousandths of an inch or less from the centerline of every other lead connector;

electrical conductors that are electrically connected to the lead connectors within the cavity and that are electrically isolated from the metallic connector enclosure while being exposed outside of the metallic connector enclosure;

wherein a portion of the can is in contact with a metallic edge of the metallic connector enclosure such that the electrical connectors within the can and the electrical conductors exposed outside the metallic connector enclosure are in contact and are contained by a housing created by the contact of the can and the metallic connector enclosure, and wherein a bond is present at the contact of the portion of the can and the metallic edge of the metallic connector enclosure.

17. A medical device, comprising:

a can that houses medical circuitry;

an electrical connector within the can and electrically connected to the medical circuitry;

a metallic connector enclosure comprising a metallic body with a metallic base and walls defining a cavity, the body including an opening to the cavity, the cavity having a recess;

a non-conductive lead connector spacer within the recess;

a lead connector within the cavity and in alignment with the opening, the lead connector being disposed within the non-conductive lead connector spacer;

an electrical conductor that is electrically connected to the lead connector within the cavity and that is electrically isolated from the metallic connector enclosure while being exposed outside of the metallic connector enclosure;

wherein a portion of the can is in contact with a metallic edge of the metallic connector enclosure such that the electrical connector within the can and the electrical conductor exposed outside the metallic connector enclosure are in contact and are contained by a housing created by the contact of the can and the metallic connector enclosure, and wherein bond is present at the contact of the portion of the can and the metallic edge of the metallic connector enclosure.