Method and apparatus for motion artifact reduction in ECG harness
Inventors
Tambe, Sonal • Deshmukh, Pramod • Sardesai, Swanand
Assignees
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Publication Number
US-11033235-B2
Publication Date
2021-06-15
Expiration Date
Abstract
A motion artifact reduction apparatus and method of using a motion artifact reduction apparatus are provided. A general aspect of a motion artifact reduction apparatus includes at least one of a plurality of sensors and at least one sleeve body with a first end and a second end. The motion artifact reduction apparatus further includes a means for removably attaching the first end and the second end to each other and at least one sensor port disposed within the at least one sleeve body. The motion artifact reduction apparatus further includes an adhesive layer disposed around the sensor port, wherein the motion artifact of the at least one of a plurality of sensors may be reduced by attaching the first end and the second end of the sleeve body to each other and by the contact of the adhesive layer to the user's body at a desirable location.
Core Innovation
The invention provides a motion artifact reduction apparatus for electrocardiogram (“ECG”) that uses a harness and at least one removable attachable sleeve body having a first end and a second end. The sleeve body is removably attachable so that a sensor port disposed on the harness positions one or more two-part dry ECG sensors at advantageous locations on a user’s body. The apparatus produces two independent and simultaneous forces, normal and shear, towards the user’s body at the at least one advantageous location to reduce motion artifacts arising from increased electrical impedance of the two-part dry ECG sensors.
The two-part dry ECG sensors include a contact surface with a contact surface diameter and a first and second support. The first support comprises a harness body, and the second support comprises a spring configured to provide normal force to the contact surface to a user’s body. A fully reusable and removable annular self-adhesive part has an inner diameter and an outer diameter, where the inner diameter conforms to the contact surface diameter of the two-part dry ECG sensors, thereby constraining shear force of the dry ECG sensors to the user’s body.
The harness body comprises an outer layer and an inner layer, and the contact surface is disposed on a first side of the outer layer that faces away from the inner layer. In related implementations, the contact surface is connected to at least one of the two-part dry ECG sensors disposed opposite the contact surface on a second side of the outer layer that faces the inner layer. The sensor is connected to a cable, with a first end of the cable connected to the sensor and a second end of the cable connected to the spring.
Claims Coverage
The independent claims are clm-00001, clm-00006, and clm-00007, each centered on a motion artifact reduction arrangement using a harness with positioned sleeve(s), two-part dry ECG sensors, simultaneous normal and shear force application, and a fully reusable and removable annular self-adhesive part constrained by sensor contact surface diameter. Across the independent claims, there are three core inventive feature groupings: harness-mounted sleeve positioning for force application, sensor supports using a spring for normal force, and an annular self-adhesive part configuring shear-force constraint by conforming inner diameter.
Harness-mounted removable sleeve positioning for normal and shear forces
The apparatus includes a harness and at least one sleeve body having first and second ends removably attachable to each other to position at least one sensor port on the harness supporting one of a plurality of two-part dry ECG sensors, producing two independent and simultaneous forces, normal and shear, towards the user’s body at at least one advantageous location to reduce motion artifacts arising from increased electrical impedance.
Two-part dry ECG sensor assembly with spring-provided normal force
The two-part dry ECG sensors include a contact surface with a contact surface diameter and a first and second support, the first support comprising the harness body and the second support comprising a spring configured to provide a normal force to the contact surface to the user’s body.
Fully reusable removable annular self-adhesive part constraining shear by conforming diameter
A fully reusable and removable annular self-adhesive part with an inner diameter and an outer diameter is configured so that the inner diameter conforms to the contact surface diameter of the two-part dry ECG sensors, thereby constraining a shear force of the dry ECG sensors to the user’s body.
Harness outer and inner layers with contact surface on outer-layer first side
The harness body comprises an outer layer and an inner layer, and the contact surface is disposed on a first side of the outer layer that faces away from the inner layer.
Cable connection between sensors and spring
The sensor is connected to a cable in which a first end of the cable is connected to the sensor and a second end of the cable is connected to the spring.
The independent claims cover a motion artifact reduction apparatus and kit, and a method of using it, where a harness supports positioned sleeve body sensor ports to apply simultaneous normal and shear forces. The dry ECG sensor contact surface receives normal force via a spring, while shear force is constrained by a fully reusable and removable annular self-adhesive part conforming to the sensor contact surface diameter. The harness layer structure and cable connectivity between sensor and spring further define the claimed arrangements.
Stated Advantages
Reduces motion artifacts arising from increased electrical impedance of the two-part dry ECG sensors.
Documented Applications
Home monitoring and telemedicine/physical activity.
Emergency screening and Holter replacement.
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