FIELD DECOUPLING ELEMENT FOR USE WITH AN IMPLANTABLE LINE AND IMPLANTABLE MEDICAL DEVICE

• US 20100099281A1
• Filed: 04/10/2009
• Published: 04/22/2010
• Est. Priority Date: 04/14/2008
• Status: Active Grant

• Current Assignee: Biotronik SE & Company KG
• Original Assignee: Biotronik CRM Patent AG (Biotronik SE & Company KG)
• Inventors: Weiss, Ingo, Friedrich, Michael, Knorr, Stefan, Maxfield, Michelle
• Granted Patent: US 8,447,416 B2
• Time in Patent Office: Days
• US Class Current: 439/86
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 1/086 Magnetic resonance imaging [MRI] compatible leads

Abstract

A field decoupling element for use with an implantable line with an elongated line body and a function conductor which extends in the longitudinal direction of the line body and acts to implement a medical function of the line, such that the field decoupling element is in electric contact with the function conductor in the use state connected to the line and reduces coupling of the function conductor to an external field.

Claims

1. A field decoupling element (7, 7′

, 7″

) comprising;

said field decoupling element connected with an implantable line (1′

) wherein the implantable line comprises an elongated line body (2) and wherein the implantable line further comprises a function conductor (4) which extends in a longitudinal direction of the elongated line body and wherein the function conductor implements a medical function of the implantable line;

said field decoupling element in electric contact with the function conductor (4) in a use state; and

,

wherein said field decoupling element reduces coupling of the function conductor (4) to an external field.

2. The field decoupling element (7, 7′

, 7″

) according to claim 1, comprising;

at least two contacts (15.1, 15.2) configured to contact the function conductor of the implantable line as well as another conductive element in a patient'"'"'s body; and

,

a switched-mode network that connects the at least two contacts.

3. The field decoupling element (7, 7′

, 7″

) according to claim 2, wherein the switched-mode network comprises;

at least one discrete passive component and/or

linear component and/or

semiconductor component and/or

element of a dielectric material and/or

a sensor and/or

a component having a giant magnetoresistance, anisotropic magnetoresistance, colossal magneto-resistance effect or tunnel magnetoresistance.

4. The field decoupling element (7, 7′

, 7″

) according to claim 1, comprising;

an elastic conductive section or part, which in the use state, holds the function conductor in a connected line in permanent contact with another conducting element in a patient'"'"'s body even under an influence of mechanical force.

5. The field decoupling element (7, 7′

, 7″

) according to claim 2, comprising;

a section or a part of an electrically conductive plastic that connects the at least two contacts.

6. The field decoupling element (7, 7′

, 7″

) according to claim 2, comprising;

a metallic section or a metallic part such that the field decoupling element connects the at least two contacts and into which an adjustable or elastic contacting element is inserted.

7. The field decoupling element (7, 7′

, 7″

) according to claim 1, wherein a surface section of the field decoupling element is made of a highly conductive material and is covered with an insulation layer, which is made of such a material and/or is of such dimensions that it has a predetermined low impedance.

8. The field decoupling element (7, 7′

, 7″

) according to claim 2, comprising;

a cavity that connects at least a first contact to a second contact selected from the at least two contacts and wherein the cavity is configured to receive a conductive liquid, which is formed so that in the use state, body fluid from a patient can penetrate and establish an electric connection between the at least two contacts.

9. The field decoupling element (7, 7′

, 7″

) according to claim 1, wherein the field decoupling element is configured to connect to multiple lines and/or multiple implantable medical devices.

10. The implantable line (1′

) comprising the elongated line body and the function conductor (4), which extends in the longitudinal direction of the elongated line body and which acts to implement the medical function of the implantable line, such that the field decoupling element (7, 7′

, 7″

, 17) according to claim 1 is in electric contact with the function conductor (4).

11. The implantable line (1′

) comprising the elongated line body and the function conductor (4) that extends in the longitudinal direction of the elongated line body and which acts to implement the medical function of the implantable line such that the implantable line is configured to couple with the field decoupling element (7, 7′

, 7″

, 17) according to claim 1.

12. The implantable line according to claim 11, embodied as an electrode (1X) having at least one electrode and an electrode terminal contact on a proximal end of the implantable line such that the function conductor connects the electrode to the electrode terminal contact and the field decoupling element (17X) in the use state of the implantable line comprises an electric contact, or nongalvanic and capacitive contact between surrounding body tissue of a patient and the electrode terminal contact.

13. The implantable line according to claim 10, embodied as an electrode line having at least two electrodes and two electrode terminal contacts on a proximal end of the implantable line such that at least two function conductors are provided that each connect an electrode to an electrode terminal contact, and the field decoupling element comprises an electric contact between at least the two electrode terminal contacts.

14. An implantable medical device (9, 9′

) for connection of the implantable line, having the elongated line body and the function conductor that extends in the longitudinal direction of the elongated line body, wherein the function conductor implements the medical function of the implantable line such that the implantable medical device comprises, or is configured to couple with, a field decoupling element (11Y) according to claim 1.