Intravascular medical device

• US 7,627,376 B2
• Filed: 01/30/2006
• Issued: 12/01/2009
• Est. Priority Date: 01/30/2006
• Status: Expired due to Fees

• Current Assignee: George J. Klein
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Dennis, Charles L., Klein, George J., Zillmer, Glenn C., Gebhardt, Ursula, Anderson, Kenneth M.
• Primary Examiner(s): Layno; Carl H
• Assistant Examiner(s): Reidel; Jessica
• Application Number:
  US11/342,735
• Publication Number:
  US 20070179552A1
• Time in Patent Office: 1,401 Days
• Field of Search: 607 33- 37, 607/61
• US Class Current: 607/36
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 1/057 Anchoring means; Means for fixing the head inside the heart
• CPC Class Codes: A61N 1/37205 Microstimulators, e.g. implantable through a cannula
• CPC Class Codes: A61N 1/37516 Intravascular implants
• CPC Class Codes: A61N 1/37518 Anchoring of the implants, e.g. fixation
• CPC Class Codes: A61N 1/3785 generated by biological activity or substance, e.g. body movement
• CPC Class Codes: A61N 1/3787 from an external energy source

Abstract

An implantable medical device is configured so that all of the major components including a housing and attached leads are disposed within the vasculature of a patient. A tether extends from the housing of the device to an implant location where the tether is secured to tissue outside of the vasculature. In this manner, an intravascular medical device may be implanted at a location remote from final placement, delivered via the vasculature and anchored at the initial entry point.

Claims

1. A method comprising:

implanting a lead at an anatomical location;

implanting a housing having a power supply within a vascular structure, wherein the lead is operably coupled with the housing;

securing the housing within the vascular structure via a tether comprising a distal end and a proximal end, wherein the proximal end is anchored outside the vascular structure and the distal end is coupled to the housing; and

replacing the power supply subsequent to implanting the lead, implanting the housing and securing the housing, without removing the lead from the anatomical location.

2. The method of claim 1, wherein replacing the power supply further comprises:

accessing the tether post-implant;

removing the housing with the power supply;

implanting a second housing with a second power supply by directing the second housing with the tether; and

coupling the second housing to the lead, wherein the lead remains attached to the anatomical location.

3. The method of claim 1, wherein replacing the power supply further comprises:

accessing the tether post-implant;

removing a portion of the housing including the power supply while leaving a tethered section of the housing;

implanting a second portion of the housing including a charged power supply by directing the second portion of the housing with the tether;

coupling the second portion of the housing with the charged power supply to the tethered section of the housing.

4. An intravascular medical device (IVMD) comprising:

a housing including one or more components of the IVMD;

means for securing the housing within a vascular structure with a tether having a proximal end coupleable to a location exterior to the vascular structure and a distal end coupleable to the housing, wherein the tether is configured to permit the housing module to move within the vascular structure in response to blood flow within the vascular structure;

means for powering the IVMD; and

means for modifying the means for powering.

5. The IVMD of claim 4, wherein the means for powering include a battery and the means for modifying include means for recharging the battery.

6. The IVMD of claim 4, wherein the means for modifying include means for replacing a first portion of the IVMD post implant without removing a second portion of the IVMD whereby the replaced first portion includes a charged battery.

7. An intravascular medical device (IVMD) comprising:

a housing module;

a lead coupleable with a first end of the housing module;

a tether comprising a proximal portion and a distal portion, the distal portion coupled to the housing module, wherein the tether is configured to secure the housing module at a position within a vascular structure when the proximal portion of the tether is anchored at an anchor point distant from the position of the housing module, and the tether is configured to permit the housing module to move within the vascular structure in response to blood flow within the vascular structure; and

a power source operably coupled with the housing module.

8. The IVMD of claim 7, wherein the power source includes a rechargeable battery contained within the housing module.

9. The IVMD of claim 7, further comprising:

a recharging module coupled with the battery to recharge the battery.

10. The IVMD of claim 9, wherein the recharging module further comprises a receiver to receive radio frequency (RF) energy and a converter to convert the RF energy into electrical energy to recharge the battery.

11. The IVMD of claim 9, wherein the recharging module further comprises a motion activated generator that converts motions into electrical current to recharge the battery.

12. The IVMD of claim 11, wherein the motion activated generator includes a magnet and a coil.

13. The IMVD of claim 11, wherein the motion activated generator includes means for converting fluid motion around the IVMD into electrical energy.

14. The IVMD of claim 9, wherein the recharging module includes means for collecting charge from tissue proximate the IMVD.

15. The IVMD of claim 7, wherein the power source further comprises means for providing power to the IVMD by converting non-electrical energy into electrical energy.

16. The IVMD of claim 15, wherein the non-electrical energy is motion.

17. The IVMD of claim 15, wherein the non-electrical energy is fluid flow.

18. The IVMD of claim 15, further comprising a battery wherein the means for providing power provides the power to the battery.

19. The IVMD of claim 7, wherein the power source is replaceable separate from the lead.

20. The IVMD of claim 7, wherein the tether is configured to be anchored at a single point.

21. The IVMD of claim 7, further comprising an anchor configured to anchor the proximal portion of the tether.

22. The IVMD of claim 7, wherein the housing module contains an implantable pulse generator configured to generate electrical stimulation energy.

23. An intravascular medical device (IVMD) comprising:

a housing module;

a lead coupleable with a first end of the housing module;

a tether comprising a proximal portion and a distal portion, the distal portion coupled to the housing module, wherein the tether is configured to secure the housing module at a position within a vascular structure when the proximal portion of the tether is anchored at an anchor point distant from the position of the housing module, and the tether is configured to counteract forces of blood flow against the housing module, thereby securing the housing module; and

a power source operably coupled with the housing module.

24. A method comprising:

implanting a housing module within a vascular structure, wherein a power supply is operably coupled with the housing module and a lead is coupled to the housing module; and

securing the housing module within the vascular structure via a tether, the tether comprising a proximal portion and a distal portion, wherein the distal portion is coupled to the housing module, wherein securing the housing within the vascular structure via the tether comprises securing the proximal portion of the tether at an anchor point distant from the housing module, and the tether is configured to permit the housing module to move within the vascular structure in response to blood flow within the vascular structure.

25. The method of claim 24, wherein the tether is anchored at a single point.

26. The method of claim 24, wherein the tether further comprises an anchor configured to anchor the tether at the anchor point.

27. The method of claim 24, wherein the housing module contains an implantable pulse generator configured to generate electrical stimulation energy.

28. A method comprising:

implanting a housing module within a vascular structure, wherein a power supply is operably coupled with the housing module and a lead is coupled to the housing module; and

securing the housing within the vascular structure via a tether, the tether comprising a proximal portion and a distal portion, wherein the distal portion is coupled to the housing module, wherein securing the housing within the vascular structure via the tether comprises securing the proximal portion of the tether at an anchor point distant from the housing module, and the tether is configured to counteract forces of blood flow against the housing module, thereby securing the housing module.

29. A method comprising:

implanting a housing module within a vascular structure, wherein a power supply is operably coupled with the housing module and a lead is coupled to the housing module; and

securing the housing module within the vascular structure via a tether, the tether comprising a proximal portion and a distal portion, wherein the distal portion is coupled to the housing module,

wherein securing the housing within the vascular structure via the tether comprises securing the proximal portion of the tether at an anchor point distant from the housing module, and the anchor point comprises an extravascular location.