04815469 is referenced by 404 patents and cites 8 patents.

An implantable medical sensor (42) determines the oxygen content of blood. The sensor includes a miniaturized hybrid circuit (130) that includes light-emitting diode means (32), phototransistor means (34, 36), and a substrate (110) to which the light-emitting diode means and phototransistor means are bonded in a desired circuit configuration. The hybrid circuit is hermetically sealed within a cylindrical body (140) made from a material that is substantially transparent to light, such as glass. Feedthrough terminals (132, 134) provide means for making an electrical connection with the hybrid circuit. The light-emitting diode means is driven with a stair-stepped current pulse. In one embodiment, the sensor is embedded within a bilumen pacemaker lead (60) and positioned near the distal electrode (66) of the lead so that the sensor resides within the heart when the lead is implanted within a patient, thereby allowing the sensed oxygen content (MVO.sub.2 concentration) of the blood within the heart to be a physiological parameter that can be used to control the pacing interval of a rate-responsive pacemaker (56).

Title
Implantable blood oxygen sensor and method of use
Application Number
107062
Publication Number
4815469
Application Date
March 10, 1988
Publication Date
March 28, 1989
Inventor
Michael D Hooven
Valencia
CA, US
James E Barcel
Simi Valley
CA, US
Donald M Cohen
Encino
CA, US
Agent
Leslie S Miller
Bryant R Gold
Assignee
Siemens Pacesetter
CA, US
IPC
A61B 5/00
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