Implantable reporting processor for an alert implant
The present disclosure provides alert implants that comprise a medical device and an implantable reporting processor (IRP), where one example of such a medical device includes a component for a total knee arthroplasty (TKA) such as a tibial extension, a femoral component for hip replacements, a breast implant, a distal rod for arm or leg breakage repair, a scoliosis rod, a dynamic hip screw, a spinal interbody spacer, and tooling and methods that may be used to form the alert implant, and uses of such alert implants in the health maintenance of patients who receive the implant.
1. A method, comprising:
forming an open cavity in a bone of a living subject; and
inserting at least a portion of a prosthesis into the open cavity,
the prosthesis including an implantable reporting processor having electronic circuitry comprising:
a supply node;
at least one peripheral circuit;
a processing circuit coupled to the supply node and configured to couple the at least one peripheral circuit to the supply node;
a timing circuit coupled to the supply node and configured to activate the processing circuit; and
a battery coupled to the supply node;
configuring the timing circuit to activate the processing circuit in accordance with a first schedule; and
configuring the processing circuit to couple the at least one peripheral circuit to the supply node to activate the at least one peripheral circuit to collect data in accordance with an energy-consumption profile;
wherein the energy-consumption profile specifies:
a plurality of periods; and
a respective maximum energy consumption by the battery for each of the plurality of periods.
2. The method of claim 1 wherein forming the open cavity includes forming the open cavity in a tibia of the living subject.
3. The method of claim 1 wherein forming the open cavity includes forming the open cavity in a femur of the living subject.
4. The method of claim 1 wherein the implantable reporting processor is disposed in the open cavity.
5. The method of claim 1 , further comprising configuring the timing circuit or the processing circuit such that the battery has a projected lifetime of at least one year.
6. The method of claim 1 , further comprising configuring the timing circuit or the processing circuit such that the battery has a projected lifetime of at least ten years.
7. The method of claim 1 , wherein a summation of the respective maximum energy consumptions does not exceed a total energy that the battery is configured to provide to the electronic circuitry.
8. The method of claim 1 , wherein at least one of the plurality of periods comprises a first portion during which the processing circuit activates the at least one peripheral circuit to collected data in a low-power mode of energy consumption.
9. The method of claim 8 , wherein the at least one peripheral circuit comprises an inertial measurement circuit having a plurality of sensors, and the processing circuit is configured to activate a first set of the plurality of sensors during the first portion.
10. The method of claim 9 , wherein the first set of the plurality of sensors collect data at a low-resolution sampling rate during the first portion.
11. The method of claim 9 , wherein the first set of the plurality of sensors comprises at least one accelerometer.
12. The method of claim 1 , wherein at least one of the plurality of periods comprises a second portion during which the processing circuit activates the at least one peripheral circuit to collected data in a high-power mode of energy consumption.
13. The method of claim 12 , wherein the at least one peripheral circuit comprises an inertial measurement circuit having a plurality of sensors, and the processing circuit is configured to activate a second set of the plurality of sensors during the second portion.
14. The method of claim 13 , wherein the second set of the plurality of sensors collect data at a high-resolution sampling rate during the second portion.
15. The method of claim 13 , wherein the second set of the plurality of sensors comprises at least one accelerometer and at least one gyroscope.
16. The method of claim 1 , wherein:
the electronic circuitry further comprises a radio circuit configured to communicate data collected by the implantable reporting processor; and
further comprising configuring the timing circuit to activate the radio circuit in accordance with a second schedule different from the first schedule.
17. The method of claim 16 , wherein the first schedule includes a number of times of activation of the processing circuit that is greater than a number of times of activation of the radio circuit.