06873268 is referenced by 519 patents and cites 23 patents.

An implantable infusion pump possesses operational functionality that is, at least in part, controlled by software operating in two processor ICs which are configured to perform some different and some duplicate functions. The pump exchanges messages with an external device via telemetry. Each processor controls a different part of the drug infusion mechanism such that both processors must agree on the appropriateness of drug delivery for infusion to occur. Delivery accumulators are incremented and decremented with delivery requests and with deliveries made. When accumulated amounts reach or exceed, quantized deliverable amounts, infusion is made to occur. The accumulators are capable of being incremented by two or more independent types of delivery requests. Operational modes of the infusion device are changed automatically in view of various system errors that are trapped, various system alarm conditions that are detected, and when excess periods of time lapse between pump and external device interactions.

Title
Microprocessor controlled ambulatory medical apparatus with hand held communication device
Application Number
9/768194
Publication Number
6873268 (B2)
Application Date
January 22, 2001
Publication Date
March 29, 2005
Inventor
Timothy J Starkweather
Simi Valley
CA, US
Sam W Bowman IV
Valencia
CA, US
Varaz Shahmirian
Northridge
CA, US
Ronald J Lebel
Sherman Oaks
CA, US
Agent
Foley & Lardner
Assignee
Medtronic Minimed
CA, US
IPC
G08B 023/00
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