Patent ID: 11957391
Assignee: WARSAW ORTHOPEDIC, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 9:
10. A spinal implant system, comprising:
a bone screw including a single elongate part extending in a longitudinal direction from a proximal end to a distal end, wherein:
the proximal end comprises a first portion having a head portion coupled to a shank portion,
the first portion comprising a metallic material, and
the shank portion comprising a threaded area, a scalloped area with a first diameter, and a necked down area that is (i) positioned between the threaded area and the scalloped area and (ii) has a second diameter less than the first diameter; and

the distal end comprises a second portion mechanically interlocked with the first portion via the threaded area, the scalloped area and the neck down area of the shank portion,
the second portion surrounding the shank area of the first potion and having an exposed thread pattern and an exposed leading tip, and
the second portion comprising a thermoplastic material; and

a receiver having a rod receiving passageway extending through a first sidewall and through a second sidewall of the implant receiver, the receiver having a threaded passageway configured to receive a set screw for securing a rod within the rod receiving passageway, the receiver comprising a base portion and at least one locking ring;
wherein, in a locked position, the head portion of the bone screw is securely coupled to the receiver via the base portion and the at least one locking ring.