Ambulatory medical apparatus and method having telemetry modifiable control software

A medical system, comprising:

• a) an ambulatory medical device (MD) comprising MD electronic control circuitry that further comprises at least one MD telemetry system and at least one MD processor that controls, at least in part, operation of the MD telemetry system and operation of the medical device, wherein the medical device is configured to provide a treatment to a body of a patient or to monitor a selected state of the body;
• and
• b) a communication device (CD) comprising CD electronic control circuitry that further comprises at least one CD telemetry system and at least one CD processor that controls, at least in part, operation of the CD telemetry system and operation of the communication device, wherein the CD telemetry system sends messages to or receives messages from the MD telemetry system,
• wherein the medical device further comprises an MD memory for holding an MD program that controls, at least in part, operation of the medical device,
• wherein the medical device is capable of executing a first type of software that allows communication with the communication device and also allows medically significant operations to occur,
• wherein the medical device is capable of executing a second type of software that allows communication with the communication device but does not allow medically significant operations to occur,
• wherein the first or second type of software can be updated using a plurality of messages comprising a software message or a data message,
• wherein each message of the plurality is sent with a validation code that is compared to a validation code that is derived, at least in part, from information received in the message,
• wherein the received and derived validation codes must appropriately compare for the received message to be considered valid, and
• wherein the plurality of messages transfer a software image.

A medical system, comprising:

• a) an ambulatory medical device (MD) comprising MD electronic control circuitry that further comprises at least one MD telemetry system and at least one MD processor that controls, at least in part, operation of the MD telemetry system and operation of the medical device, wherein the medical device is configured to provide a treatment to a body of a patient or to monitor a selected state of the body;
• and
• b) a communication device (CD) comprising CD electronic control circuitry that further comprises at least one CD telemetry system and at least one CD processor that controls, at least in part, operation of the CD telemetry system and operation of the communication device,
• wherein the CD telemetry system sends messages to or receives messages from the MD telemetry system,
• wherein the medical device further comprises an MD memory for holding an MD program that controls, at least in part, operation of the medical device,
• wherein the medical device is capable of executing a first type of software that allows communication with the communication device and also allows medically significant operations to occur,
• wherein the medical device is capable of executing a second type of software that allows communication with the communication device hut does not allow medically significant operations to occur,
• wherein the first or second type of software can be updated using a plurality of messages comprising a software message or a data message,
• wherein each message of the plurality is sent with a validation code that is compared to a validation code that is derived, at least in part, from information received in the message,
• wherein the received and derived validation codes must appropriately compare for the received message to be considered valid, and
• wherein the plurality of messages transfer a data image.

A medical system, comprising:

• a) an ambulatory medical device (MD) comprising MD electronic control circuitry that further comprises at least one MD telemetry system and at least one MD processor that controls, at least in part, operation of the MD telemetry system and Operation of the medical device, wherein the medical device is configured to provide a treatment to a body of a patient or to monitor a selected state of the body;
• and
• b) a communication device (CD) comprising CD electronic control circuitry that further comprises at least one CD telemetry system and at least one CD processor that controls, at least in part, operation of the CD telemetry system and operation of the communication device,
• wherein the CD telemetry system sends messages to or receives messages from the MD telemetry system,
• wherein the medical device further comprises an MD memory for holding an MD program that controls, at least in part, operation of the medical device,
• wherein the medical device is capable of executing a first type of software that allows communication with the communication device and also allows medically significant operations to occur,
• wherein the medical device is capable of executing a second type of software that allows communication with the communication device but does not allow medically significant operations to occur,
• wherein the first or second type of software can be updated using a plurality of messages comprising a software message or a data message,
• wherein each message of the plurality is sent with a validation code that is compared to a validation code that is derived, at least in part, from information received in the message,
• wherein the received and derived validation codes must appropriately compare for the received message to be considered valid, and
• wherein the validation codes comprise CRCs.