Inventor

RALPH JAMES D

US157 patents

⚠️ This page may combine multiple inventors who share the name “RALPH JAMES D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RALPH JAMES D

THIRD MILLENNIUM ENGINEERING L

Anterior cervical plate having polyaxial locking screws and sliding coupling elements

Longitudinal plate assembly having an adjustable length

Intervertebral spacer device having a spiral wave washer force restoring element

Insertion tool for use with tapered trial intervertebral distraction spacers

Intervertebral spacer device having a wave washer force restoring element

Polyaxial pedicle screw having a rotating locking element

Method of surgically treating scoliosis

Femoral ring loader

Method of distracting vertebral bones

Insertion tool for use with trial intervertebral distraction spacers

Longitudinal plate assembly having an adjustable length

Intervertebral spacer device

Rotatable locking vertebral body screw, staple and rod assembly

Coupled rod, anterior vertebral body screw, and staple assembly

Hinged variable length cross-link device

Polyaxial pedicle screw having a through bar clamp locking mechanism

Side mounted polyaxial pedicle screw

Polyaxial mechanism for use with orthopaedic implant devices

Rod securing polyaxial locking screw and coupling element assembly

Modular polyaxial locking pedicle screw

SPINECORE INC

Intervertebral spacer device having arch shaped spring element

Artificial intervertebral disc

Intervertebral spacer having a flexible wire mesh vertebral body contact element

Method of surgically treating scoliosis

Intervertebral spacer device utilizing a spirally slotted belleville washer and a rotational mounting

Intervertebral spacer device having a wave washer force restoring element

Method of distracting vertebral bones

Intervertebral spacer device having a radially thinning slotted belleville spring

Artificial intervertebral disc having a wave washer force restoring element

Intervertebral spacer device having arch shaped spring elements

Intervertebral spacer device utilizing a spirally slotted belleville washer having radially extending grooves

Intervertebral spacer device having a slotted domed arch strip spring

Intervertebral spacer device having a multi-pronged domed spring

Porous intervertebral distraction spacers

Intervertebral spacer device having a slotted partial circular domed arch strip spring

Vertebral bone distraction instruments

FASTENETIX LLC

Polyaxial pedicle screw having a threaded and tapered compression locking mechanism

Polyaxial pedicle screw having a threaded and tapered compression locking mechanism

Acetabular cup having capped polyaxial locking screws

Polyaxial pedicle screw having a threaded and tapered compression locking mechanism

Polyaxial locking screw and coupling element

Polyaxial locking mechanism

Acetabular cup having polyaxial locking screws

SPINAL CONCEPTS INC

Side mounted polyaxial pedicle screw

Polyaxial pedicle screw having a through bar clamp locking mechanism

Polyaxial pedicle screw having a compression locking rod gripping mechanism

Polyaxial pedicle screw having a through bar clamp locking mechanism

Polyaxial pedicle screw having a compression locking rod gripping mechanism

K2M INC

Polyaxial drill guide

(unassigned)

Anterior spinal polyaxial locking screw plate assembly having recessed retaining rings