초록 ▼

An implantable medical device having a dual cell power source powering a high-power output circuit and a low-power control circuit. The power source includes a first, high-rate cell and a second, lower-rate cell having a rate capability less than a rate capability of the first, high-rate cell. The f

An implantable medical device having a dual cell power source powering a high-power output circuit and a low-power control circuit. The power source includes a first, high-rate cell and a second, lower-rate cell having a rate capability less than a rate capability of the first, high-rate cell. The first and second cells are electrically connected to the output circuit and control circuit by circuitry. In one embodiment, the circuitry connects the first and second cells in parallel to the output circuit and the control circuit, and includes a switching circuit for selectively uncoupling the first, high-rate cell from the control circuit during a transient high power pulse. In another embodiment, the first and second cells are formed within a single case and are connected in parallel to the output circuit and the control circuit. In another embodiment, the high-rate cell is anode limited, characterized by a rate capability exhibiting minimal dependence on time up to a pre-selected voltage-based ERI at which at least 40 percent of the cathode is consumed.

대표청구항 ▼

An implantable medical device having a dual cell power source powering a high-power output circuit and a low-power control circuit. The power source includes a first, high-rate cell and a second, lower-rate cell having a rate capability less than a rate capability of the first, high-rate cell. The f

An implantable medical device having a dual cell power source powering a high-power output circuit and a low-power control circuit. The power source includes a first, high-rate cell and a second, lower-rate cell having a rate capability less than a rate capability of the first, high-rate cell. The first and second cells are electrically connected to the output circuit and control circuit by circuitry. In one embodiment, the circuitry connects the first and second cells in parallel to the output circuit and the control circuit, and includes a switching circuit for selectively uncoupling the first, high-rate cell from the control circuit during a transient high power pulse. In another embodiment, the first and second cells are formed within a single case and are connected in parallel to the output circuit and the control circuit. In another embodiment, the high-rate cell is anode limited, characterized by a rate capability exhibiting minimal dependence on time up to a pre-selected voltage-based ERI at which at least 40 percent of the cathode is consumed. 1. A method for communicating with an implantable medical device, the method comprising: providing an implantable medical device within a body, the implantable medical device having at least receiver circuitry; providing a programming apparatus, comprising; a programming device having programming circuitry operable for use in programming the implantable medical device; a programming wand for communicating with the implantable medical device, the programming wand comprising: a housing; transmitter circuitry within the housing, the transmitter circuitry compatible with the receiver circuitry of the implantable medical device; an antenna associated with the housing, the antenna coupled to the transmitter circuitry, wherein the antenna is operable for transmitting programming information to the receiver circuitry of the implantable medical device; and an input device coupled to the housing, the input device operable for use in permitting operator control of the programming device; positioning the programming wand proximate to the implantable medical device; holding the programming wand with an operator's first hand; transmitting programming instructions from the programming device to the implantable medical device via the programming wand; manipulating one or more input devices located on the programming wand to control the programming apparatus with the operator's first hand; and maintaining the operator's second hand free to perform tasks other than controlling the programming apparatus. 2. The method of claim 1, wherein manipulating the one or more devices comprises rotating a trackball. 3. The method of claim 1, wherein manipulating the one or more input devices comprises rotating a scrolling wheel. 4. The method of claim 1, wherein manipulating the one or more input devices comprises depressing a button. 5. The method of claim 1, further comprising transmitting status information from the implantable medical device to the programming wand. 6. The method of claim 1, wherein the medical device is a cardiac pacing device. 7. The method of claim 1, wherein the cardiac pacing device is at least one of a pacemaker, cardioverter, defibrillator.