초록 ▼

An improved body function assistance device is provided wherein a microprocessor controls the response of the device to various external physiological events and internal timer events. The microprocessor is adapted for use with the limited energy supply available from a battery by activating interna

An improved body function assistance device is provided wherein a microprocessor controls the response of the device to various external physiological events and internal timer events. The microprocessor is adapted for use with the limited energy supply available from a battery by activating internal logic components of the processor only in response to selected events and to perform an operating routine corresponding to the “wakeup”event. At the end of the operating routine, a new set of wakeup events is selected and the internal logic components are deactivated. A further reduction in the average operating current is obtained by providing a plurality of counting rates to minimize the number of state changes during counting cycles. The microprocessor may be provided with a fixed operating routine or may be provided with the capability of actually introducing program changes in the implanted device.

대표청구항 ▼

A programmable implantable body function assistance device comprising: a microprocessor for executing stored instructions in a sequence directed by a program counter, ROM means for providing a fixed set of instructions to said microprocessor, RAM means for providing a programmable set of instruction

A programmable implantable body function assistance device comprising: a microprocessor for executing stored instructions in a sequence directed by a program counter, ROM means for providing a fixed set of instructions to said microprocessor, RAM means for providing a programmable set of instructions, and programmable patch register means interconnecting said microprocessor, said program counter and said RAM means for causing instructions stored in said RAM means to be executed when said program counter corresponds to a programmed count in said patch register.