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Wireless Torsiometers – BioNomadix

BioNomadix®: Physiology Where, When, and How You Want

Transducer for wireless, wearable physiology

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BioNomadix Torsiometer 110 mm Transducer
Part #: BN-TOR-110-XDCR, BN-TOR-150-XDCR

Single-axis torsiometer (110 or 150 mm ) to measure rotations in one plane; if the torsiometer is bent in planes X-X or Y-Y the output remains constant. Terminates in adapter (BN-ADAPTER-GONIO) for wireless transmission using dual-channel BioNomadix Goniometry Amplifier (BN-GONIO). This single-axis torsiometer will use one transmitter channel, leaving the other available for a second measurement via another single-axis torsiometer or goniometer.

Torsiometers have a telescopic endblock that compensates for changes in distance between the two mounting points as the limb moves. The gauge mechanism allows for accurate measurement of polycentric joints. Torsiometers attach to the body using medical-grade adhesive tape (TAPE2).

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Bionomadix 110 mm Torsiometer
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Categories: BioNomadix Wireless Wearable Physiology - Research
Subcategories: Transducers - Research

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BioNomadix torsiometers are ideal for simple, accurate measurement of joint movement in multiple planes. Sensors are lightweight, flexible, and extremely robust, and can be comfortably worn without hindering the actual movement of the joint, undetected under clothing. Single-axis torsiometers and twin-axis goniometers provide improved mechanical integrity and electrical performance.

The following list of typical uses is for guidance only…select sensor size such that the sensor is capable of reaching across the joint so that the endblocks can be mounted where least movement occurs between the skin and underlying skeletal structure.

  • BN-TOR-110-XDCR – neck – axial rotation
  • BN-TOR-150-XDCR – forearm – pronation/supination
  • BN-GON-F-XDCR – finger (DIP, PIP, MCP) or toe – flexion/extension
  • BN-GON-110-XDCR – elbow or ankle – flexion/extension, or dorsiflexion/plantarflexion and inversion/eversion
  • BN-GON-150-XDCR – knee or hip – flexion/extension and valgus/varus, or flexion/extension and abudction/adduction

Suggested reading for additional information on goniometry

Legnani G, Zappa B, Casolo F, Adamini R, Magnani PL. A model of an electro-goniometer and its calibration for biomechanical applications. Med Eng Phys. 2000 Dec;22(10):711-22.

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