Patent ID: 9168070
Filing Date: 2015-10-27
Classification: A61B

Abstract:
1. A growing spinal rod system comprising: a housing defining a longitudinal axis and a stepped passage, the stepped passage disposed about the longitudinal axis and having a first end and a second end, a diameter of the first end being less than a diameter of the second end; a first spacer disposed within the stepped passage of the housing about the longitudinal axis, the first spacer including a ring defining a through hole coaxial with the longitudinal axis and a plurality of ribs extending from the ring towards the first end of the stepped passage, the plurality of ribs biased radially inwards, the first spacer includes a plurality of mating protrusions extending from the ring towards the second end of the stepped passage, the plurality of ribs of the first spacer define mating slots between adjacent ribs, each mating slot sized and configured to receive a respective mating protrusion of a second spacer; a first spinal rod slidably inserted through the through hole of the first spacer and extending from the housing through the first end of the stepped passage, the first spinal rod moving the plurality of ribs outwards when the first spinal rod is inserted through the through hole of the first spacer, the plurality of ribs permitting the first spinal rod to extend from the housing through the first end of the stepped passage and inhibiting the first spinal rod from retracting into the housing through the first end of the stepped passage; and a second spinal rod including an end slidably received through the second end of the stepped passage.