초록 ▼

In a medical treatment device implanted within the body of a patient, a system and method using volatile and non-volatile memory devices within an implanted drug infusion pump to provide a safe and robust programmable system, able to back-up and restore the device's hardware and software operating p

In a medical treatment device implanted within the body of a patient, a system and method using volatile and non-volatile memory devices within an implanted drug infusion pump to provide a safe and robust programmable system, able to back-up and restore the device's hardware and software operating parameters in the event of RAM corruption and as an alternative to hardware trim techniques. The pump includes a processor, a ROM, a RAM, and an EEPROM. The RAM serves as a main memory and the EEPROM serves a back-up memory in the event of RAM corruption. The ROM serves as an additional layer of back-up memory in the event of RAM and EEPROM corruption.

대표청구항 ▼

We claim: 1. A method of updating trim parameter values for an integrated circuit within an implantable pump, comprising the steps of: (a) receiving from an external programmer an updated trim parameter value corresponding to a trim parameter; (b) validating the updated trim parameter value; (c) co

We claim: 1. A method of updating trim parameter values for an integrated circuit within an implantable pump, comprising the steps of: (a) receiving from an external programmer an updated trim parameter value corresponding to a trim parameter; (b) validating the updated trim parameter value; (c) copying the updated trim parameter value to a memory; and (d) updating a hardware component associated with the trim parameter in accordance with the trim parameter value. 2. The method of updating trim parameter values of claim 1, wherein the step of copying includes the step of copying the trim parameter value to a first memory and to a second memory. 3. The method of updating trim parameter values of claim 1, further comprising the step of: (e) if the trim parameter value is not valid, then issuing an error message to the external programmer. 4. A computer-readable medium having computer-executable instructions for performing the steps recited in claim 1. 5. The method of updating trim parameter values of claim 1, wherein the receiving of a parameter value in (a) comprises receiving a value for a parameter selected from the list consisting of a resistance value, a voltage reference and a bias current. 6. A method of updating trim parameter values for an integrated circuit within an implantable pump, comprising the steps of: (a) receiving from an external programmer an updated trim parameter value corresponding to a trim parameter; (b) validating the updated trim parameter value; (c) copying the updated trim parameter value to a non-volatile programmable memory; and (d) updating a hardware component associated with the trim parameter in accordance with the trim parameter value. 7. The method of claim 5, wherein the copying to the non-volatile programmable memory in (c) comprises storing the parameter value in flash EEPROM. 8. The method of claim 5, wherein the receiving of a parameter value in (a) comprises receiving a value for a parameter selected from the list consisting of a resistance value, a voltage reference and a bias current.