| US 7,570,998 B2 | ||
| Acoustic communication transducer in implantable medical device header | ||
| Cheng Zhang, Vadnais Heights, Minn. (US); Thomas W. Piaget, Minneapolis, Minn. (US); Abhijeet V. Chavan, Maple Grove, Minn. (US); Keith R. Maile, New Brighton, Minn. (US); and Ron A. Balczewski, Bloomington, Minn. (US) | ||
| Assigned to Cardiac Pacemakers, Inc., St. Paul, Minn. (US) | ||
| Filed on Jul. 20, 2007, as Appl. No. 11/780,903. | ||
| Application 11/780903 is a continuation in part of application No. 11/212176, filed on Aug. 26, 2005. | ||
| Claims priority of provisional application 60/820062, filed on Jul. 21, 2006. | ||
| Prior Publication US 2008/0021289 A1, Jan. 24, 2008 | ||
| Int. Cl. A61N 1/00 (2006.01) | ||
| U.S. Cl. 607—18 | 19 Claims |
| 1. An implantable medical device for implantation into body tissue comprising:
a housing and a header coupled to the housing;
a cavity located in the header;
a casing disposed within the cavity, the casing having a wall defining a coupling surface;
an ultrasonic transducer disposed inside the casing, the transducer adapted to transmit acoustic waves at a communication
frequency; and
control circuitry disposed in the housing, the control circuitry adapted to communicate with a remote device by driving the
transducer at the communication frequency and processing electrical signals received from the transducer;
wherein the coupling surface is configured to be interposed between the ultrasonic transducer and the body tissue, the coupling
surface having a resonance frequency greater than about 20 kHz and the coupling surface configured to be acoustically coupled
with the body tissue.
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