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US 12,419,581 B2Granted
Wireless measurement of suture tension
AssigneeUniversity of Oregon
InventorsKeat Ghee Ong, Salil Sidharthan Karipott, Robert Erling Guldberg, Kaylee M. Meyers
Life of this patent
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Abstract
Certain examples of the disclosure concern an implantable sensor. The implantable sensor includes a sensor assembly configured to connect to a suture. The sensor assembly also includes a substrate and a resonant circuit coupled to the substrate. The resonant circuit is configured to electrically resonate at a resonant frequency when exposed to a first electromagnetic field and to emit a second remotely detectable electromagnetic field. The substrate is configured to deform in response to a tensile force applied by the suture and to change a resonant parameter of the resonant circuit in response to the deformation.
Claims20
A sensor assembly, comprising:
- a suture button defining two openings for receiving a suture;
- and
- a suture button adapter comprising:
- one or more openings for receiving the suture;
- and
- an enclosure configured to deform in response to a tensile force applied by the suture via the suture button and enclosing:
- a deformable member comprising a top surface and a bottom surface;
- and
- a resonant circuit comprising at least one inductor and a resistive transducer, wherein:
- the resistive transducer is coupled to the bottom surface of the deformable member;
- the at least one inductor is electronically connected to the resistive transducer and extends around a perimeter of the deformable member;
- the resonant circuit is configured to electrically resonate at a resonant frequency when exposed to a first electromagnetic field and to emit a second remotely detectable electromagnetic field, the resonant circuit having a resistance that varies in response to a deformation, such that the resonant circuit has a resonant quality factor determined at least by an inductance of the at least one inductor, a capacitance, and the resistance of the resistive transducer;
- deformation of the enclosure deforms the deformable member and the resistive transducer, thereby changing the resistance of the resistive transducer and the resonant quality factor of the resonant circuit;
- and
- the resonant frequency of the resonant circuit is determined at least in part by the inductance of the at least one inductor and an inherent parasitic capacitance of the at least one inductor.
12 more elements
A sensor assembly comprising:
- a suture button adapter configured to be coupled to a suture button and comprising:
- one or more openings for receiving a suture;
- and
- an enclosure configured to deform in response to a tensile force applied by the suture and enclosing:
- a deformable member comprising a top surface and a bottom surface;
- and
- a resonant circuit comprising at least one inductor and a resistive transducer, wherein:
- the resistive transducer is coupled to the bottom surface of the deformable member;
- the at least one inductor is electronically connected to the resistive transducer and extends around a perimeter of the deformable member;
- the resonant circuit is configured to electrically resonate at a resonant frequency when exposed to a first electromagnetic field and to emit a second remotely detectable electromagnetic field, the resonant circuit having a resistance that varies in response to the deformation, such that the resonant circuit has a resonant quality factor determined at least by an inductance of the at least one inductor, a capacitance, and the resistance of the resistive transducer;
- the deformation of the enclosure deforms the deformable member and the resistive transducer, thereby changing the resistance of the resistive transducer and the resonant quality factor of the resonant circuit;
- and
- the resonant frequency of the resonant circuit is determined at least in part by the inductance of the at least one inductor and an inherent parasitic capacitance of the at least one inductor.
10 more elements
A sensor assembly comprising:
- a suture button adapter configured to be coupled to a suture button and comprising:
- one or more openings for receiving a suture;
- and
- a deformable member comprising a top surface and a bottom surface;
- a resonant circuit comprising at least one inductor and a resistive transducer, wherein:
- the resistive transducer is coupled to the bottom surface of the deformable member;
- the at least one inductor is electronically connected to the resistive transducer;
- the resonant circuit is configured to electrically resonate at a resonant frequency when exposed to a first electromagnetic field and to emit a second remotely detectable electromagnetic field, the resonant circuit having a resistance that varies in response to the deformation, such that the resonant circuit has a resonant quality factor determined at least by an inductance of the at least one inductor, a capacitance, and the resistance of the resistive transducer;
- deformation of the deformable member and the resistive transducer thereby changes the resistance of the resistive transducer and the resonant quality factor of the resonant circuit;
- and
- the resonant frequency of the resonant circuit is determined at least in part by the inductance of the at least one inductor and an inherent parasitic capacitance of the at least one inductor.
8 more elements
Dependencies are inferred from the claim text.