Power and bi directional data interface assembly and surgical system including the same
A surgical system includes a power supply, a surgical instrument, and a power and data interface assembly. The power and data interface assembly includes a transformer having a primary winding, to which a first modulator and a second demodulator are coupled, and a secondary winding, to which a second modulator and a first demodulator are coupled. The power supply provides a power signal to the first modulator. The first modulator is configured to modulate, according to a first type of modulation, the power signal based on first data. The modulated power signal is communicated by the first modulator to the first demodulator by way of the transformer. The second modulator is configured to modulate, according to a second type of modulation, a second signal based on second data. The modulated second signal is communicated by the second modulator to the second demodulator by way of the transformer.
1. A surgical system, comprising:
a power supply;
a surgical instrument; and
a power and data interface assembly, comprising:
a transformer having a primary winding and a secondary winding;
a first modulator coupled to the primary winding;
a first demodulator coupled to the secondary winding;
a second modulator coupled to the secondary winding;
a second demodulator coupled to the primary winding, the power supply being configured to provide a power signal to the first modulator;
the first modulator being configured to:
modulate, according to a first type of modulation, a first signal based on the power signal and first data, and
communicate, by way of the transformer, the modulated power signal to the first demodulator; and
the second modulator being configured to:
modulate, according to a second type of modulation, a second signal based on second data, and
communicate the modulated second signal to the second demodulator by way of the transformer; and
at least one capacitor configured to tune the primary winding to a first resonant frequency and tune the secondary winding to a second resonant frequency different than the first resonant frequency.
2. The surgical system according to claim 1 , wherein the transformer is an air core transformer.
3. The surgical system according to claim 1 , wherein at least one of the first or second resonant frequencies are within a range of 200 kilohertz to 1 gigahertz.
4. The surgical system according to claim 1 , wherein power from the power signal is delivered to the surgical instrument by way of the transformer.
5. The surgical system according to claim 1 ,
wherein the first demodulator is configured to:
demodulate, according to the first type of modulation, the modulated power signal to obtain the first data and communicate the first data to a second processor, and
wherein the second demodulator is configured to:
demodulate, according to the second type of modulation, the modulated second signal to obtain the second data, and communicate the second data to a first processor.
6. The surgical system according to claim 5 , wherein the first data is generated by the first processor and includes control information for controlling the surgical instrument, and the second data is generated by the second processor based on a sensor signal received from a sensor, and
wherein the control information includes at least one of temperature data, device calibration data, device usage data, force data, or orientation data.
7. The surgical system according to claim 6 , wherein the sensor includes at least one of a hand switch closure detection sensor configured to detect closure of a hand switch of the surgical instrument, or a return electrode monitoring sensor configured to detect an impedance associated with a return electrode.
8. The surgical system according to claim 1 , wherein the first type of modulation and the second type of modulation are configured for simultaneous bi-directional communication of the first data and the second data by way of the transformer.
9. The surgical system according to claim 1 , further comprising:
a first processor; and
a second processor,
the first processor being configured to communicate the first data to the second processor by way of the first modulator, the transformer, and the first demodulator, and
the second processor being configured to communicate the second data to the first processor by way of the second modulator, the transformer, and the second demodulator.
10. The surgical system according to claim 1 , wherein the first type of modulation is phase shift keying modulation and the second type of modulation is amplitude modulation.
11. A power and data interface assembly, comprising:
a transformer having a primary winding and a secondary winding;
a first modulator coupled to the primary winding;
a first demodulator coupled to the secondary winding;
a second modulator coupled to the secondary winding; and
a second demodulator coupled to the primary winding,
the first modulator being configured to:
modulate, according to a first type of modulation, a first signal based on the power signal and first data, and
communicate, by way of the transformer, the modulated power signal to the first demodulator; and
the second modulator being configured to:
modulate, according to a second type of modulation, a second signal based on second data, and
communicate the modulated second signal to the second demodulator by way of the transformer; and
at least one capacitor configured to tune the primary winding to a first resonant frequency and tune the secondary winding to a second resonant frequency different than the first resonant frequency.
12. The power and data interface assembly according to claim 11 , wherein the transformer is an air core transformer.
13. The power and data interface assembly according to claim 11 , further comprising tuning circuitry including one or more capacitors configured to tune at least one of the primary winding or the secondary winding to one or more resonant frequencies.
14. The power and data interface assembly according to claim 13 , wherein the one or more resonant frequencies are within a range of 200 kilohertz to 1 gigahertz.
15. The power and data interface assembly according to claim 11 , wherein power from the power signal is delivered to a surgical instrument by way of the transformer.
16. The power and data interface assembly according to claim 11 ,
wherein the first demodulator is configured to:
demodulate, according to the first type of modulation, the modulated power signal to obtain the first data and
communicate the first data to a second processor, and
wherein the second demodulator is configured to:
demodulate, according to the second type of modulation, the modulated second signal to obtain the second data, and
communicate the second data to a first processor.
17. The power and data interface assembly according to claim 16 , wherein the first data is generated by the first processor and includes control information for controlling a surgical instrument, and the second data is generated by the second processor based on a sensor signal received from a sensor, and
wherein the control information includes at least one of temperature data, device calibration data, device usage data, force data, or orientation data.
18. The power and data interface assembly according to claim 17 , wherein the sensor includes at least one of a hand switch closure detection sensor configured to detect closure of a hand switch of a surgical instrument, or a return electrode monitoring sensor configured to detect an impedance associated with a return electrode.
19. The power and data interface assembly according to claim 11 , wherein the first type of modulation and the second type of modulation are configured for simultaneous bi-directional communication of the first data and the second data by way of the transformer.
20. The power and data interface assembly according to claim 11 , wherein the first type of modulation is phase shift keying modulation and the second type of modulation is amplitude modulation.