UNITARY DUAL-CHAMBER LEADLESS INTRA-CARDIAC MEDICAL DEVICE AND METHOD OF IMPLANTING SAME

• US 20130110219A1
• Filed: 01/17/2012
• Published: 05/02/2013
• Est. Priority Date: 10/31/2011
• Status: Active Grant

• Current Assignee: Pacesetter Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Pacesetter Incorporated (Abbott Laboratories Incorporated)
• Inventors: Bornzin, Gene A., Poore, John W., Somogyi, Zoltan
• Granted Patent: US 8,781,605 B2
• Time in Patent Office: Days
• US Class Current: 607/127
• CPC Class Codes: A61B 17/3468 for implanting or removing devices, e.g. prostheses, implants, seeds, wires devices for implanting seeds A61M37/0069
• CPC Class Codes: A61N 1/0573 chacterised by means penetrating the heart tissue, e.g. helix needle or hook
• CPC Class Codes: A61N 1/059 Anchoring means
• CPC Class Codes: A61N 1/37205 Microstimulators, e.g. implantable through a cannula
• CPC Class Codes: A61N 1/3756 Casings with electrodes thereon, e.g. leadless stimulators

Abstract

An assembly for introducing a leadless intra-cardiac medical device includes a sheath having an internal passage, wherein the sheath is configured to be maneuvered into the heart of the patient. A housing may be retained within the internal passage, wherein the housing is configured to be pushed out of the sheath, the housing having a first anchoring member configured to anchor the housing to a first implant location within the heart. The assembly may also include an electrode trailing the housing within the internal passage, wherein the electrode is also configured to be pushed out of the sheath. The electrode has a second anchoring member configured to anchor the electrode to a second implant location within the heart. A conductive wire connects the housing to the electrode, wherein movement of the housing out of the sheath causes the electrode to follow the movement to a distal end of the sheath.

Claims

1. An assembly for introducing a leadless intra-cardiac medical device within a heart of a patient, said assembly comprising:

a sheath having an internal passage, wherein the sheath is configured to be maneuvered into the heart of the patient;

a housing retained within the internal passage, wherein the housing is configured to be pushed out of the sheath, the housing having a first anchoring member configured to anchor the housing to a first implant location within the heart;

an electrode trailing the housing within the internal passage, wherein the electrode is also configured to be pushed out of the sheath, the electrode having a second anchoring member configured to anchor the electrode to a second implant location within the heart; and

a conductive wire connecting the housing to the electrode, wherein movement of the housing out of the sheath causes the electrode to follow the movement to a distal end of the sheath.

2. The assembly of claim 1, wherein the sheath comprises a flexible, longitudinal, cylindrical open-ended tube defining the internal passage.

3. The assembly of claim 1, further comprising a push rod within the sheath, the push rod being removably connected to the housing, wherein the push rod is configured to be engaged to push the housing out of the sheath.

4. The assembly of claim 3, wherein the push rod is also configured to rotate the housing to screw the housing into the first implant location.

5. The assembly of claim 3, wherein the push rod is threadably connected to the housing.

6. The assembly of claim 3, wherein the push rod is connected to the housing through an interference fit.

7. The assembly of claim 1, wherein the first anchoring member is an anchoring helix or barb.

8. The assembly of claim 1, wherein the second anchoring member is an anchoring helix or barb.

9. The assembly of claim 1, further comprising a stylet removably connected to the electrode within the sheath, wherein the stylet is configured to be engaged to push the electrode out of the sheath.

10. The assembly of claim 9, wherein the stylet is also configured to rotate the electrode to screw the electrode into the second implant location.

11. The assembly of claim 9, wherein the stylet is threadably connected to the electrode.

12. The assembly of claim 9, wherein the stylet is connected to the electrode through an interference fit.

13-21. -21. (canceled)