New material for implantable cardiac leads

Technical parameters of Zylon AS and HM. HM is different from AS in modulus, moisture regain, and other properties.

Stress-strain characteristic of the PBO HM fibers as compared with other high-performance fibers.

Strength-twist relationship.

Creep resistance of the Zylon fibers.

Effect of temperature (°C) on strength and modulus.

Zylon resistance to strong inorganic acids as a function of time (hours).

Zylon resistance to alkalines.

Moisture pickup by Zylon fibers.

A, Relationship between the tensile modulus and the frequency of the fatigue for different strain vales. B, Relationship between the tensile relative modulus and the frequency of the fatigue for different strain vales.

A, Longitudinal property of PBO and Kevlar. B, Relationship between torque and twist angle of the rod.

Scanning electron micrograph of the cross-section of gold-metallized PBO multiple-strand fiber.

Paced electrocardiogram recording obtained by a sensing PBO fiber placed in the dog's right ventricle.