| US 7,571,007 B2 | ||
| Systems and methods for use in pulse generation | ||
| John H. Erickson, Plano, Tex. (US); Anthony J. Varrichio, Plano, Tex. (US); and Benjamin A. Tranchina, Allen, Tex. (US) | ||
| Assigned to Advanced Neuromodulation Systems, Inc., Plano, Tex. (US) | ||
| Filed on May 26, 2006, as Appl. No. 11/420,670. | ||
| Application 11/420670 is a continuation in part of application No. 11/105332, filed on Apr. 12, 2005. | ||
| Application 11/105332 is a continuation in part of application No. 11/105190, filed on Apr. 12, 2005. | ||
| Application 11/105190 is a continuation in part of application No. 11/105191, filed on Apr. 12, 2005, granted, now 7,450,987. | ||
| Application 11/105191 is a continuation in part of application No. 11/105188, filed on Apr. 12, 2005. | ||
| Application 11/105188 is a continuation in part of application No. 11/105186, filed on Apr. 12, 2005. | ||
| Claims priority of provisional application 60/685036, filed on May 26, 2005. | ||
| Claims priority of provisional application 60/561437, filed on Apr. 12, 2004. | ||
| Prior Publication US 2006/0259098 A1, Nov. 16, 2006 | ||
| Int. Cl. A61N 1/378 (2006.01) | ||
| U.S. Cl. 607—61 | 8 Claims |
| 1. A method of recharging an implantable medical device after implantation within a patient, comprising:
(a) transmitting a RF power signal;
(b) receiving the RF power signal in an antenna in the implantable medical device;
(c) rectifying a signal from the antenna;
(d) recharging a rechargeable battery of the implantable medical device using the rectified signal, wherein the recharging
applies multiple current levels to the rechargeable battery in succession, and wherein the recharging switches from at least
one of the current levels to another current level when a charging voltage of the rechargeable battery reaches a threshold
value, wherein the threshold value is a programmable value;
(e) monitoring a voltage drop of the rechargeable battery when switching between a first current level and a second current
level of the multiple current levels;
(f) modifying the threshold value, for use in a subsequent charging cycle, in response to the monitoring; and
(g) repeating (a)-(e) in the subsequent charging cycle including using the modified threshold value during repetition of (d).
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