IMPLANTABLE MEDICAL SYSTEM

• US 20110224766A1
• Filed: 11/04/2009
• Published: 09/15/2011
• Est. Priority Date: 11/14/2008
• Status: Active Grant

• Current Assignee: Medtronic Bakken Research Center B.V. (Medtronic Plc)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Wang, Ke, TOL, Jeroen Jacob Arnold
• Granted Patent: US 10,478,615 B2
• Time in Patent Office: Days
• US Class Current: 607/116
• CPC Class Codes: A61N 1/0534 Electrodes for deep brain stimulation

Abstract

This invention relates to an implantable medical system, where an implantable device including a power source operable connected to electrical components is adapted to generate electrical pulses, and a probe having a distal-end and a proximal-end. The distal-end has one or more electrodes adapted to be in electrical contact with a target tissue and wires for connecting the one or more electrodes to the implantable device. The wires conduct the electrical pulses from the implantable device to the one or more electrodes and into the target tissue. The probe has at least one capacitor and wires for connecting the at least one capacitor to the electrical components in the implantable device such that the at least one capacitor forms a part of the electrical components of the implantable device.

Claims

1. An implantable medical system (100), comprising:

an implantable device (104) comprising a power source (107) operable connected to electrical components (106a) adapted to generate electrical pulses, and

a probe (101) having a distal-end (109) and a proximal-end (108), the distal-end comprising one or more electrodes (102) adapted to be in electrical contact with a target tissue (105) and wires (103) for connecting the one or more electrodes (102) to the implantable device (104), where the wires conduct the electrical pulses from the implantable device (104) to the one or more electrodes (102) and into the target tissue (105),

wherein the probe (101) comprises at least one capacitor (106b) and wires for connecting the at least one capacitor (106b) to the electrical components (106a) comprised in the implantable device (104) such that the at least one capacitor (106b) forms a part of the electrical components (106a) of the implantable device (104).

2. An implantable medical system according to claim 1, wherein the shape of the at least one capacitor comprised in the probe (101) is adapted to geometrical shape of the probe (101).

3. An implantable medical system according to claim 1, wherein the electrical components (106a) comprised in the implantable device (104) include at least one further capacitor (106a) in addition to said at least one capacitor (106b).

4. An implantable medical system according to claim 2, wherein the geometrical shape of the probe (101) is cylindrical.

5. An implantable medical system according to claim 1, wherein the capacitor (106b) is partitioned into multiple sub-capacitors connected in parallel and/or in series.

6. An implantable medical system according to claim 1, wherein the probe (101) is partitioned into multiple segments (301) interlinked by a bendable separation portion (302), where the segments (301) comprise at least of said sub-capacitors.

7. An implantable medical system according to claim 1, wherein the capacitor is formed by layered structures comprising at least a first and a second conducting layer (206, 208) separated by a dielectric layer (207).

8. An implantable medical system according to claim 7, wherein the dielectric constant of the dielectric layer is higher than 5.

9. An implantable medical system according to claim 7, wherein the thickness of the dielectric layer is less than 25 nm.

10. An implantable medical system according to claim 7, wherein the layered structures are microstructured so as to increase the effective surface area of the layered structures.

11. An implantable medical system according to claim 7, wherein the layered structures comprise an interdigitated capacitor design so as to increase the effective surface area of the layered structures.

12. An implantable medical system according to claim 7, wherein the layered structures comprise a repetition of metal-dielectric-metal layers or a repetition of the interdigitated capacitor design.

13. An implantable medical system according to claim 10, wherein the capacitors are connected in parallel.

14. An implantable medical system according to claim 7, wherein the layered structure further includes an interconnect layer (204) with said wires embedded therein for connecting the at least one capacitor and said electrical components comprised in the implantable device together.

15. A probe (101) adapted to connected to an implantable device (104), where the implantable device (104) comprises a power source (107) operable connected to electrical components (106a) adapted to generate electrical pulses, where the probe (101) has a distal-end (109) and a proximal-end (108), the distal-end comprising one or more electrodes (102) adapted to be in electrical contact with a target tissue (105) and wires (103) extending from the one or more electrodes (102) to the proximal-end (108) adapted to connect the electrodes to the implantable device (104) for conducting the electrical pulses from the implantable device (104) to the one or more electrodes (102) and into the target tissue (105),

wherein the probe (101) comprises at least one capacitor (106b) and wires extending from the at least one capacitor (106b) to the proximal-end (108) adapted for connecting the at least one capacitor (106b) to the electrical components (106a) comprised in the implantable device (104) such that the at least one capacitor (106b) forms a part of the electrical components (106a) of the implantable device (104).