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 hip prosthesis for implanting in a hip of a host, the hip prosthesis comprising:
a femoral component comprising a femoral stem and a femoral head, where a receptacle is located within the femoral stem; and
an implantable reporting processor disposed in the receptacle, the implantable reporting processor comprising:
at least one sensor configured to monitor host activity by making measurements, a memory configured to store the measurements,
a radio circuit and an antenna configured to transmit the measurements to a location outside of the host, and
a processing circuit configured to activate the at least one sensor to make measurements based on an energy consumption profile that specifies a plurality of different time periods and a different respective maximum energy consumption for each of the plurality of different time periods; and
a battery disposed in the receptacle and coupled to the implantable reporting processor, where the battery provides energy to the implantable reporting processor.
2 . The hip prosthesis of claim 1 , wherein a summation of the different respective maximum energy consumptions does not exceed a total energy that the battery is configured to provide to the implantable reporting processor.
3 . The hip prosthesis of claim 1 , wherein at least one of the plurality of different time periods comprises a first portion during which the processing circuit activates the at least one sensor to make measurements in a low-power mode of energy consumption.
4 . The hip prosthesis of claim 1 , wherein the at least one sensor comprises a plurality of sensors, and the processing circuit is configured to activate a first set of the plurality of sensors during the first portion.
5 . The hip prosthesis of claim 2 , wherein the first set of the plurality of sensors are configured to make measurements at a low-resolution sampling rate during the first portion.
6 . The hip prosthesis of claim 2 , wherein the first set of the plurality of sensors comprises at least one accelerometer.
7 . The hip prosthesis of claim 1 , wherein at least one of the plurality of different time periods comprises a second portion during which the processing circuit activates the at least one sensor to make measurements in a high-power mode of energy consumption.
8 . The hip prosthesis of claim 7 , wherein the at least one sensor comprises a plurality of sensors, and the processing circuit is configured to activate a second set of the plurality of sensors during the second portion.
9 . The hip prosthesis of claim 8 , wherein the second set of the plurality of sensors are configured to make measurements at a high-resolution sampling rate during the second portion.
10 . The hip prosthesis of claim 8 , wherein the second set of the plurality of sensors comprises at least one accelerometer and at least one gyroscope.
11 . The hip prosthesis of claim 1 , wherein the implantable reporting processor further comprise a timing circuit configured to:
activate the processing circuit based on a first schedule; and
activate the radio circuit based on a second schedule different from the first schedule.
12 . The hip prosthesis of claim 11 , 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.
13 . The hip prosthesis of claim 1 , wherein the plurality of different time periods comprises a first time period and a second time period, and the second time period is greater than the first time period.
14 . The hip prosthesis of claim 13 , wherein the first time period is at least one month.
15 . The hip prosthesis of claim 13 , wherein the plurality of different time periods further comprises a third time period that is greater than each of the first time period and the second time period.
16 . The hip prosthesis of claim 15 , wherein the first time period is at least one month and the third time period is at least one year.
17 . The hip prosthesis of claim 1 , wherein the at least one sensor comprises a plurality of sensors, at least one of the plurality of different time periods comprises a first portion and a second portion, and the processing circuit is configured to:
activate a first set of the plurality of sensors during the first portion of the at least one of the plurality of different time periods to make measurements at a low-resolution sampling rate; and
activate a second set of the plurality of sensors during the second portion of the at least one of the plurality of different time periods to make measurements at a high-resolution sampling rate.