Antenna for an Implantable Cardiac Monitoring Devie

• US 20180042552A1
• Filed: 08/10/2016
• Published: 02/15/2018
• Est. Priority Date: 08/10/2016
• Status: Active Grant

• Current Assignee: Pacesetter Incorporated (Abbott Laboratories)
• Original Assignee: Pacesetter Incorporated (Abbott Laboratories)
• Inventors: Li, Perry, Kirk, Patrick, Imani, Reza, Goodman, Mitch
• Granted Patent: US 10,779,767 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 2562/125 characterised by the manufacture of electrodes
• CPC Class Codes: A61B 5/076 Permanent implantations telemetry using implanted circuitry A61B5/0031; implanted stimulators for therapy A61N1/3605, A61N1/362, A61N1/372
• CPC Class Codes: A61B 5/283 Invasive
• CPC Class Codes: A61B 5/29 for permanent or long-term implantation
• CPC Class Codes: A61B 5/686 Permanently implanted devices, e.g. pacemakers, other stimulators, biochips A61B5/6861 takes precedence
• CPC Class Codes: A61B 5/6861 Capsules, e.g. for swallowing or implanting

Abstract

An implantable cardiac monitoring device and method of manufacture are provided. The device comprises a device housing having electronic components therein. A feedthrough assembly is joined to the device housing. The device comprises an antenna. A header body is mounted to the device housing and encloses the antenna and feedthrough assembly. The antenna includes a pin mounting section and a plate shaped radiating section. The pin mounting and radiating sections are interconnected by a ribbon section having a predetermined length to at least partially tune the antenna to a communication frequency. The radiating section is positioned proximate to, and shaped to extend along, an outer surface of the header body.

Claims

1. An implantable cardiac monitoring device, comprising:

a device housing having electronic components therein;

a feedthrough assembly joined to the device housing;

an antenna; and

a header body mounted to the device housing and enclosing the antenna and feedthrough assembly;

the antenna including a pin mounting section and a plate shaped radiating section, the pin mounting and radiating sections interconnected by a ribbon section having a length to at least partially tune the antenna to a communication frequency, the radiating section positioned proximate to an outer surface of the header body.

2. The device of claim 1, wherein the radiating section is elongated along a longitudinal axis, the axis being arc shaped to follow a contour of the outer surface of the header body.

3. The device of claim 1, wherein the ribbon section has a narrower width than a width of the radiating section.

4. The device of claim 1, wherein the pin mounting section is plate shaped and oriented to align with a pin that projects from the feedthrough assembly.

5. The device of claim 1, wherein the ribbon section includes a zig-zag pattern with a predetermined length.

6. The device of claim 1, wherein the antenna is curved with the pin mounting section and radiating section spaced apart to span a height of the header body from the feedthrough assembly to a top edge of the header body.

7. The device of claim 1, wherein the header body is formed of an injection molded flowable material that embeds the antenna therein.

8. The device of claim 1, wherein the radiating section includes one or more mechanical anchoring tabs that are bent to extend inward and be securely encased within the header body.

9. The device of claim 1, wherein the electronic components include a transceiver circuit to communicate with an external device through the antenna utilizing at least one of a Bluetooth protocol or Medical Implant Communications Standard (MICS) protocol.

10. A method for providing an implantable cardiac monitoring device, comprising:

assembling a device housing having electronic components therein;

joining a feedthrough assembly to the device housing;

providing an antenna including a pin mounting section and a plate shaped radiating section, the pin mounting and radiating sections interconnected by a ribbon section having a predetermined length to at least partially tune the antenna to a communications frequency;

assembling a header body that embeds the antenna therein; and

orienting the antenna within the header body with the radiating section positioned proximate to an outer surface of the header body.

11. The method of claim 10, further comprising sizing the radiating section as a rectangular plate with a width that is wider than a width of the ribbon section to provide large radiating edges long the plate and to provide a stabilizing force for anchoring and retention of the header on the device housing.

12. The method of claim 10, wherein the providing operation includes shaping the radiating section as an elongated rectangular-shaped plate that extends along a longitudinal axis, and bending the plate along the longitudinal axis in an arc that is shaped to follow a contour of the outer surface of the header body.

13. The method of claim 10, wherein the providing operation includes stamping the antenna with the ribbon section to have a narrower width than a width of the radiating sections.

14. The method of claim 10, wherein the providing operation includes stamping the pin mounting section to have a plate shape and aligning the plate shape with a pin that projects from the feedthrough assembly.

15. The method of claim 10, further comprising forming a zig-zag pattern in the ribbon section with a predetermined length to at least partially tune the antenna to a frequency of interest.

16. The method of claim 10, wherein the antenna includes an overall length extending from a proximal end of the pin mounting section to a distal end of the radiating section, the method further comprising tuning the antenna by adjusting the overall length based on a communications frequency to carry RF signals.

17. The method of claim 10, wherein the assembling operation comprises injection molding or casting a flowable material about the antenna.

18. An antenna to be provided in a header of an implantable medical device, the antenna comprising:

a pin mounting section;

a plate shaped radiating section; and

a ribbon section interconnecting the pin mounting and radiating sections,

the ribbon section having a predetermined length to at least partially tune the antenna to a communications frequency;

the radiating section having an elongated plate shape that extends along a longitudinal axis, the plate shape curved along the longitudinal axis to follow a contour of an outer surface of a header.

19. The antenna of claim 18, wherein the ribbon section has a narrower width than a width of the pin mounting and radiating sections, the ribbon section curved in a zig-zag pattern.

20. The antenna of claim 18, wherein the radiating section includes one or more mechanical anchoring tabs that are bent to extend inward and securely encased within the header body.