Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Implantable pulse generators using rechargeable zero-volt technology lithium-ion batteries










Image Number 7 for United States Patent #6553263.

An implantable medical device, such as an implantable pulse generator (IPG) used with a spinal cord stimulation (SCS) system, includes a rechargeable lithium-ion battery having an anode electrode with a substrate made substantially from titanium. Such battery construction allows the rechargeable battery to be discharged down to zero volts without damage to the battery. The implantable medical device includes battery charging and protection circuitry that controls the charging of the battery so as to assure its reliable and safe operation. A multi-rate charge algorithm is employed that minimizes charging time while ensuring the battery cell is safely charged. Fast charging occurs at safer lower battery voltages (e.g., battery voltage above about 2.5 V), and slower charging occurs when the battery nears full charge higher battery voltages (e.g., above about 4.0 V). When potentially less-than-safe very low voltages are encountered (e.g., less than 2.5 V), then very slow (trickle) charging occurs to bring the battery voltage back up to the safer voltage levels where more rapid charging can safely occur. The battery charging and protection circuitry also continuously monitors the battery voltage and current. If the battery operates outside of a predetermined range of voltage or current, the battery protection circuitry disconnects the battery from the particular fault, i.e. charging circuitry or load circuits.








 
 
  Recently Added Patents
Internal wiring structure of semiconductor device
Method and system for providing status of a machine
Tap initialization of equalizer based on estimated channel impulse response
Method of making and using an alpha-glucanase composition to reduce or remove biofilm
Web development environment that enables a developer to interact with run-time output presentation of a page
Method and apparatus for representing sensory effects and computer readable recording medium storing user sensory preference metadata
Automated solar collector installation design including ability to define heterogeneous design preferences
  Randomly Featured Patents
Vehicle identification system
Table for pet food dishes
Steam iron with scale deposit repression
ADAPTIVE FILTER FOR ECHO CANCELLATION, METHOD FOR OPERATING AN ADAPTIVE FILTER FOR ECHO CANCELLATION, AN ARTICLE OF MANUFACTURE FOR DETERMINING TAP WEIGHTS AND A LENGTH FOR AN ADAPTIVE FILTER
Release mechanism for circuit interrupting device
Vehicle, driving system, and control methods of the same
CDMA code address data routing system and method
Method and apparatus for mounting electronic component
Rotary head type magnetic recording and reproducing system
High bandwidth low noise cross-coupled amplifier