초록 ▼

The present invention relates to centerless grinding methods and corresponding devices such as feedthroughs for implantable medical devices and for batteries for implantable medical devices. The present invention provides certain advantages, including the elimination of longitudinal anomalies in dra

The present invention relates to centerless grinding methods and corresponding devices such as feedthroughs for implantable medical devices and for batteries for implantable medical devices. The present invention provides certain advantages, including the elimination of longitudinal anomalies in drawn wire and increasing the reliability of implantable medical devices. In a method of the present invention, the surface of an over-size medical grade wire having a known anomaly depth is centerless ground to a depth past which those anomalies disappear. Centerless grinding of the present invention may be accomplished using an abrasive wheel and suitable coolant.

대표청구항 ▼

[ We claim:] [1.] An electrical power source for providing electrical current to an implantable medical device, comprising:(a) a case having at least one aperture disposed therein;(b) at least one feedthrough extending through the aperture in the case, the feedthrough having a seal and a pin extendi

[ We claim:] [1.] An electrical power source for providing electrical current to an implantable medical device, comprising:(a) a case having at least one aperture disposed therein;(b) at least one feedthrough extending through the aperture in the case, the feedthrough having a seal and a pin extending through the seal, the pin having a surface, the surface having been subjected to a centerless grinding process for removing defects and anomalies therefrom, the pin surface having fewer defects and anomalies disposed thereon than the surface of a comparable pin not subjected to the centerless grinding process;(c) a cathode assembly including a cathode, the cathode assembly being disposed within the case(d) an anode assembly including an anode, the anode being disposed within the case; at least one feedthrough being electrically connected to one of the anode and the cathode, the anode and cathode being disposed within the case in operative relationship respecting one another.