Implantable Biostimulator Delivery System

• US 20110282423A1
• Filed: 07/26/2011
• Published: 11/17/2011
• Est. Priority Date: 10/14/2005
• Status: Active Grant

• Current Assignee: Pacesetter Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Nanostim, Inc (Abbott Laboratories Incorporated)
• Inventors: Jacobson, Peter M.
• Granted Patent: US 8,855,789 B2
• Time in Patent Office: Days
• US Class Current: 607/126
• CPC Class Codes: A61M 25/0662 Guide tubes
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 1/0573 chacterised by means penetrating the heart tissue, e.g. helix needle or hook
• CPC Class Codes: A61N 1/0587 Epicardial electrode systems; Endocardial electrodes piercing the pericardium
• CPC Class Codes: A61N 1/059 Anchoring means
• CPC Class Codes: A61N 1/3621 for treating or preventing abnormally high heart rate
• CPC Class Codes: A61N 1/3627 for treating a mechanical deficiency of the heart, e.g. congestive heart failure or cardiomyopathy
• CPC Class Codes: A61N 1/36514 controlled by a physiological quantity other than heart potential, e.g. blood pressure controlled by two or more physical parameters A61N1/36585
• CPC Class Codes: A61N 1/36542 controlled by body motion, e.g. acceleration
• CPC Class Codes: A61N 1/368 comprising more than one electrode co-operating with different heart regions A61N1/3622, A61N1/3627 take precedence
• CPC Class Codes: A61N 1/3684 for stimulating the heart at multiple sites of the ventricle or the atrium
• CPC Class Codes: A61N 1/36842 Multi-site stimulation in the same chamber
• CPC Class Codes: A61N 1/3704 Circuits specially adapted therefor, e.g. for sensitivity control
• CPC Class Codes: A61N 1/3706 Pacemaker parameters stimulation threshold A61N1/371
• CPC Class Codes: A61N 1/3708 for power depletion
• CPC Class Codes: A61N 1/372 Arrangements in connection with the implantation of stimulators
• CPC Class Codes: A61N 1/37205 Microstimulators, e.g. implantable through a cannula
• CPC Class Codes: A61N 1/37217 characterised by the communication link, e.g. acoustic or tactile
• CPC Class Codes: A61N 1/37252 Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data
• CPC Class Codes: A61N 1/3727 characterised by the modulation technique
• CPC Class Codes: A61N 1/37288 : Communication to several implantable medical devices within one patient
• CPC Class Codes: A61N 1/37512 : Pacemakers
• CPC Class Codes: A61N 1/37518 : Anchoring of the implants, e.g. fixation
• CPC Class Codes: A61N 1/3756 : Casings with electrodes thereon, e.g. leadless stimulators
• CPC Class Codes: A61N 1/3925 : Monitoring; Protecting
• CPC Class Codes: A61N 1/3956 : Implantable devices for applying electric shocks to the heart, e.g. for cardioversion
• CPC Class Codes: A61N 1/39622 : Pacing therapy
• CPC Class Codes: A61N 2001/058 : Fixing tools
• CPC Class Codes: H04B 13/005 : Transmission systems in which the medium consists of the human body

Abstract

A delivery system for implanting a biostimulation device comprising a stylet extending along an axis from knob end to a threaded end configured to engage an internally threaded nut of the biostimulation device and a catheter tube configured to axially contain the stylet. The catheter tube comprises a feature that engages a corresponding feature on the biostimulation device whereby the stylet can be rotated relative to the catheter tube for disengagement of the stylet threaded end from the biostimulation device threaded end.

Claims

1. A method for implanting a biostimulation device in a heart of a patient, the method comprising:

inserting a catheter and biostimulation device into the heart, the biostimulation device comprising an electrode covered by the catheter during the inserting step;

after the inserting step, moving the catheter, thereby exposing the electrode; and

after the moving step, performing threshold testing on the heart with the electrode.

2. The method of claim 1 wherein the biostimulation device comprises a fixation element, the fixation element being covered by the catheter during the insertion step, the moving step comprising exposing the fixation element.

3. The method of claim 1 wherein the fixation element comprises an active fixation element, the method further comprising affixing the fixation element to cardiac tissue.

4. The method of claim 1 wherein the fixation element comprises a passive fixation element.

5. The method of claim 1 wherein the inserting step comprises inserting a stylet engaged with the biostimulation device.

6. The method of claim 5 further comprising disengaging the stylet from the biostimulation device.

7. The method of claim 6 wherein the disengaging step comprises rotating the stylet with respect to the biostimulation device.

8. The method of claim 7 wherein the disengaging step further comprises applying a counter-rotational force on the biostimulation device with the catheter.

9. The method of claim 1 further comprising repositioning the biostimulation device within the heart after the performing step.

10. The method of claim 9 further comprising performing threshold testing on the heart with the electrode after the repositioning step.