Sensing device, system and method for surgical suture thread

A sensing system comprising:

• a plurality of sensing devices configured to be planted onto a bone to sense a tension in a surgical suture thread, each of the plurality of sensing devices includes a carrier and a wireless sensor, the wireless sensor is mounted in a through hole of the carrier and configured to be contacted by the surgical suture thread passed through the through hole, a resonance frequency range of the wireless sensor of each of the plurality of sensing devices is different and not overlapping;
• and
• a wireless reading device including a controller, an inductive coil, a reader and a computer, the controller is configured to generate a plurality of oscillation signals to the inductive coil, oscillation frequency ranges of the plurality of oscillation signals are not overlapping, each of the plurality of oscillation signals includes a plurality of oscillation sub-signals with different oscillation frequencies, the plurality of oscillation sub-signals are configured to be transmitted to the inductive coil to activate the wireless sensor of each of the plurality of sensing devices, wherein while the oscillation frequency of one of the plurality of oscillation sub-signals of one of the plurality of oscillation signals is consistent with one of a plurality of resonance frequencies within the resonance frequency range of the wireless sensor of one of the plurality of sensing devices, the wireless sensor is configured to generate a resonance frequency signal, the reader is configured to read a phase value corresponding to the resonance frequency signal, and the computer is configured to receive and convert the phase value to a pressure signal.

A sensing method for sensing a force applied to a soft tissue by a surgical suture thread comprising:

• providing a first sensing device and a second sensing device which are configured to be planted onto a bone, the first sensing device includes a first carrier and a first wireless sensor which is mounted in a first through hole of the first carrier, the second sensing device includes a second carrier and a second wireless sensor which is mounted in a second through hole of the second carrier, a first resonance frequency range of the first wireless sensor is not overlapping with a second resonance frequency range of the second wireless sensor, the first wireless sensor is configured to be contacted by the surgical suture thread passed through the first through hole to generate a first resonance frequency within the first resonance frequency range, and the second wireless sensor is configured to be contacted by the surgical suture thread passed through the second through hole to generate a second resonance frequency within the second resonance frequency range;
• providing a wireless reading device including a controller, an inductive coil, a reader and a computer, the controller is configured to generate a first oscillation signal and a second oscillation signal to the inductive coil, the first oscillation signal includes a plurality of first oscillation sub-signals with different oscillation frequencies within a first oscillation frequency range of the first oscillation signal, the second oscillation signal includes a plurality of second oscillation sub-signals with different oscillation frequencies within a second oscillation frequency range of the second oscillation signal, and the first oscillation frequency range is not overlapping with the second oscillation frequency range;
• and
• activation of the first sensing device and/or the second sensing device including:
• a first step of activating the first sensing device by the plurality of first oscillation sub-signals or by the plurality of second oscillation sub-signals, wherein the first wireless sensor of the first sensing device activated by the plurality of first oscillation sub-signals is configured to generate a first resonance frequency signal while the oscillation frequency of one of the plurality of first oscillation sub-signals is consistent with the first resonance frequency of the first wireless sensor, wherein the first sensing device is configure to be activated by the plurality of second oscillation sub-signals while the oscillation frequency of each of the plurality of first oscillation sub-signals is not consistent with the first resonance frequency of the first wireless sensor, and wherein the first wireless sensor of the first sensing device activated by the plurality of second oscillation sub-signals is configured to generate the first resonance frequency signal while the oscillation frequency of one of the plurality of second oscillation sub-signals is consistent with the first resonance frequency of the first wireless sensor;
• a second step of reading a first phase value corresponding to the first resonance frequency signal by the reader;
• a third step of converting the first phase value to a first pressure signal by the computer and showing a first pressure value of the first pressure signal on a display;
• a fourth step of activating the second sensing device by the plurality of second oscillation sub-signals or by the plurality of first oscillation sub-signals, wherein the second sensing device is configured to be activated by the plurality of second oscillation sub-signals while the oscillation frequency of one of the first oscillation sub-signals is consistent with the first resonance frequency of the first wireless sensor, wherein the second wireless sensor of the second sensing device activated by the plurality of second oscillation sub-signals is configured to generate a second resonance frequency signal while the oscillation frequency of one of the plurality of second oscillation sub-signals is consistent with the second resonance frequency of the second wireless sensor, wherein the second sensing device is configured to be activated by the plurality of first oscillation sub-signals while the oscillation frequency of one of the second oscillation sub-signals is consistent with the first resonance frequency of the first wireless sensor, and wherein the second wireless sensor of the second sensing device activated by the plurality of first oscillation sub-signals is configured to generate the second resonance frequency signal while the oscillation frequency of one of the plurality of first oscillation sub-signals is consistent with the second resonance frequency of the second wireless sensor;
• a fifth step of reading a second phase value corresponding to the second resonance frequency signal by the reader;
• and
• a sixth step of converting the second phase value to a second pressure signal by the computer and showing a second pressure value of the second pressure signal on the display.