Spinal Distraction Tool For Load And Position Measurement
First Claim
1. A method of distracting a spinal region comprising the steps of:
- inserting a spinal instrument to distract the spinal region;
measuring a load applied by the spinal region to the spinal instrument where the spinal region is distracted to a first height where a load measurement is outside a predetermined load range;
distracting the spinal region to a second height; and
measuring the load applied by the spinal region to the spinal instrument at the second height where the load is within the predetermined load range.
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Accused Products
Abstract
A spine alignment system is provided to assess load forces on the vertebra in conjunction with overall spinal alignment. The system includes a spine instrument having an electronic assembly and a sensorized head. The sensorized head can be inserted between vertebra and report vertebral conditions such as force, pressure, orientation and edge loading. A GUI is therewith provided to show where the spine instrument is positioned relative to vertebral bodies as the instrument is placed in the inter-vetebral space. The system can distract vertebrae to a first height and measure the load applied by the spine region. The GUI can indicate that the load is outside a predetermined range. The spine region can be distracted to a second height where the load is measured within the predetermined load range.
52 Citations
20 Claims
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1. A method of distracting a spinal region comprising the steps of:
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inserting a spinal instrument to distract the spinal region; measuring a load applied by the spinal region to the spinal instrument where the spinal region is distracted to a first height where a load measurement is outside a predetermined load range; distracting the spinal region to a second height; and measuring the load applied by the spinal region to the spinal instrument at the second height where the load is within the predetermined load range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of distracting a spinal region comprising the steps of:
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inserting a spinal instrument to distract the spinal region; measuring a load applied by the spinal region to the spinal instrument where the spinal region is distracted to a first height; indicating that the measured load is outside a predetermined load range; and adjusting the spinal instrument to distract the spinal region to a second height where a load measurement at the second height falls within the predetermined load range. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of tracking alignment and orientation of a spinal region comprising the steps of:
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placing a receiver in proximity to a plurality of wands where the receiver is in a fixed position and in a line of sight of the plurality of wands; registering one or more anatomic features of the sacrum with a wand; retrieving a 3D spine model having orientation and dimensions corresponding to the registered anatomic features; and identifying at least one position or location of one or more vertebrae where location measurements are determined ultrasonically. - View Dependent Claims (18, 19, 20)
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Specification