Goniometer
First Claim
1. A goniometer comprising an elongate body having at least a main portion which is flexible but resistant to torsion, a plurality of sensors each attached to the elongate body adjacent both ends of said portion and extending longitudinally of the body, at locations spaced from one another around the body, the sensors being extensible and such that an electrical property thereof varies with varying length thereof, and a circuit connected to the sensors for converting variations in said electrical property into a measure of the relative angular disposition of the ends of the body.
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Accused Products
Abstract
A goniometer for use in measuring angular movements of joints of a human or animal body comprises an elongate body and a plurality of mercury-in-rubber sensors extending longitudinally of the body at locations spaced from one another around the body. The electrical resistance of the sensors varies with varying strain thereof, and a circuit is connected to the sensors for converting variations in the resistance into a measure of the relative angular disposition of the ends of the body.
36 Citations
10 Claims
- 1. A goniometer comprising an elongate body having at least a main portion which is flexible but resistant to torsion, a plurality of sensors each attached to the elongate body adjacent both ends of said portion and extending longitudinally of the body, at locations spaced from one another around the body, the sensors being extensible and such that an electrical property thereof varies with varying length thereof, and a circuit connected to the sensors for converting variations in said electrical property into a measure of the relative angular disposition of the ends of the body.
- 8. A goniometer comprising an elongate body, a plurality of sensors extending longitudinally of the body, at locations spaced from one another around the body, the sensors being such that an electrical property thereof varies with varying strain thereof, and a circuit connected to the sensors for converting variations in said electrical property into a measure of the relative angular disposition of the ends of the body, said elongate body comprising non-flexible end sections and a flexible section intermediate said end sections, said sensors being secured at one end to one of the end sections and at the other end to the other of said end sections, said one of said end sections being free to rotate relative to said flexible section.
Specification