Patent ID: 11951015
Assignee: LINARES SPINAL DEVICES, LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. A spinal jack adapted for installation between first and second vertebral processes, comprising:
a three dimensional and arcuate ergonomic main body constructed from first and second subset body portions;
an upper body supported upon said main body between retracted and expanded positions;
said upper body further including a pair of downwardly extending stems seating within said main body;
each of said bodies further including gripping portions adapted for engaging the vertebral processes;
a worm gear mechanism having a rotatable worm gear supported within said main body and accessible through an inlet aperture provided for expanding or retracting said upper body relative to said main body in order to establish a corrected adjusted orientation between the processes, said rotatable worm gear including a spiral array of teeth extending along its generally horizontal length, wherein said spiral array of teeth form a crosswise bevel with annular gear teeth arranged upon each of a pair of outer gears arranged upon opposite sides;
each of said first and second subset portions of said main body further including an opposing base within which is configured a recessed cavity for receiving said worm gear and said outer gears, said recessed cavity further including a central cavity location and adjoining peripheral cavity locations defined in said first subset body portion, said inlet aperture further including aligning subset rim portions defined in said first and second subset body portions; and
bottom extending portions of said stems each further comprising additional worm gear configurations which rotatably engage inner spiraling threads configured in said outer gears.