Image-Guided Spinal Correction With Movable Implant Adaptors
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Solution Overview
Problem
Existing surgical treatments for spinal disorders, such as degenerative disc disease, disc herniation, osteoporosis, spondylolisthesis, stenosis, scoliosis, kyphosis, and fractures, often fail to provide precise correction and stabilization of the spine, leading to incomplete relief of symptoms like pain and nerve damage.
Innovation Solution
A surgical system and method involving imaging, registration, and positional tracking of patient anatomy, followed by the use of bone fasteners and implant supports with movable adaptors to engage surgical instruments for precise distraction and compression of vertebral tissue, allowing for accurate correction and stabilization of spinal alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional spinal implants and surgical instruments are used, then surgical treatment can be performed, but precise correction and stabilization of spinal alignment cannot be achieved
Solution Approach 1:
The patent replaces traditional mechanical alignment methods with an image-guided navigation system that uses imaging data and computer processing to determine precise vertebral positions and orientations. The system substitutes manual mechanical measurement with automated image registration and coordinate transformation algorithms, enabling sub-millimeter positional accuracy in spinal implant placement.
Solution Approach 2:
The patent introduces an image-guided navigation system as an intermediary between the surgeon and the surgical instruments. This intermediary provides real-time positional feedback and guidance, allowing the surgeon to achieve precise correction by following computer-generated instructions based on registered anatomical images and tracked instrument positions.
2Ease of operation
If spinal implants are manipulated with surgical instruments for compression and distraction, then vertebral positioning can be adjusted, but controlled and precise manipulation is difficult to achieve
Solution Approach 1:
The patent implements a feedback system where the navigation system continuously tracks the position of surgical instruments and provides real-time information about instrument location relative to the planned correction path. This feedback loop allows the surgeon to make precise adjustments to compression and distraction forces while monitoring the actual versus desired vertebral positioning throughout the procedure.
Solution Approach 2:
The patent replaces manual estimation and tactile feedback with computer-calculated positional data derived from registered anatomical images. The system substitutes the surgeon's tactile sense with precise digital measurements of vertebral position, allowing for controlled manipulation based on quantitative feedback rather than qualitative sensation.
3Measurement precision
If navigation systems are used for precise positioning, then correction accuracy is improved, but device complexity increases
Solution Approach 1:
The patent integrates multiple functions into a unified navigation system that combines anatomical image acquisition, image registration, coordinate system transformation, real-time instrument tracking, and correction guidance. This multi-functional system eliminates the need for separate devices for each function, reducing overall system complexity while maintaining high positional tracking accuracy through centralized computer processing.
Data Source
AI summary
A method for treating a spine, the method comprising the steps of: imaging a patient anatomy for registration of anatomical image data and positional tracking of the patient anatomy; selecting an implant strategy for at least one bone fastener; selecting a manipulation strategy for the patient anatomy; determining a post-correction orientation of the patient anatomy according to the implant strategy and the manipulation strategy; imaging the post-correction orientation of the patient anatomy; engaging the at least one bone fastener with vertebral tissue of the patient anatomy according to the implant strategy; and connecting a first implant support to the at least one bone fastener, the first implant support including an adaptor that is movable relative to the first implant support to releasably engage a surgical instrument to distract and/or compress the vertebral tissue according to the manipulation strategy. Surgical instruments, constructs and implants are disclosed.