Calibrated Jig Guidance for Minimally Invasive Vertebral Line Anchoring
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Solution Overview
Problem
Current spinal stabilization devices require extensive dissection and detachment of soft tissues, leading to potential damage and prolonged recovery, as they lack direct anchorage to bone and allow for motion around the force-exerting structures, risking failure.
Innovation Solution
A minimally invasive method and system using a jig device with calibrated holes, a cannula, and an anchor implant with tabs to secure lines to vertebrae, allowing for precise anchorage with minimal tissue disruption, utilizing a locking mechanism and oblong tabs to prevent tab retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If bands or tethers are applied to stabilize the spine by wrapping around or passing through bone structures, then spinal stability is improved, but the lines can motion around the structures leading to potential failure
Solution Approach 1:
The patent introduces an intermediary anchoring device that bridges the line and the bone structure. The anchor implant with tabs serves as a mediator, providing a secure attachment point that prevents the line from motion around the bone structures while maintaining spinal stability.
Solution Approach 2:
The anchor implant is segmented into multiple tabs (first tab and second tab) that can be independently positioned and secured. The first tab anchors to the bone while the second tab secures to the line, creating a reliable connection that prevents motion while maintaining stability.
2Stability of the object's composition
If current methods are used to apply bands or tethers, then spinal stabilization is achieved, but extensive dissection and detachment of soft tissues is required
Solution Approach 1:
The jig device acts as an intermediary tool that enables precise placement of the anchor implant through minimal incisions. The calibrated holes in the jig guide the cannula and anchor implant through the soft tissue with accuracy, reducing the need for extensive dissection while maintaining stabilization效果.
Solution Approach 2:
The jig device is positioned and calibrated beforehand to identify the precise entry points and pathways for the anchor implant. This preliminary positioning allows the surgeon to create minimal incisions and follow predetermined paths, avoiding extensive soft tissue dissection while ensuring accurate placement for spinal stabilization.
3Stability of the object's composition
If direct anchorage of lines to vertebrae is implemented, then spinal segment augmentation stability is improved, but surgical complexity increases
Solution Approach 1:
The patent combines multiple functions into the anchor implant device. The single anchor implant integrates both the first tab for bone anchorage and the second tab for line securing, merging what would otherwise be separate components into one unified device that achieves direct anchorage while managing surgical complexity.
Solution Approach 2:
The jig device serves as an intermediary system that simplifies the surgical procedure by providing pre-calibrated guidance. The jig with its calibrated holes guides the cannula and anchor implant placement, reducing the complexity of achieving precise direct anchorage to the vertebrae.
4Object-affected harmful factors
If minimal incisions are used for anchor implant placement, then soft tissue disruption is reduced, but precision of anchorage placement becomes more difficult
Solution Approach 1:
The jig device with its calibrated holes serves as an intermediary guidance system that enables precise anchor implant placement through minimal incisions. The calibration features on the jig ensure accurate positioning while the small incisions minimize soft tissue disruption, resolving the contradiction between precision and tissue preservation.
Solution Approach 2:
The jig device is pre-calibrated and positioned beforehand to establish the exact pathway and entry points for the anchor implant. This preliminary action ensures that when the minimal incisions are made, the precision of placement is maintained through the predetermined guide holes, avoiding the need for larger incisions while ensuring accuracy.
Data Source
AI summary
In a system including a jig device with first and second calibrated holes, insertable through a primary incision, a cannula is configured for insertion through a secondary incision, passing through the calibrated holes. An anchor implant coupled to a line is configured for insertion through the cannula. The anchor implant includes a first tab passable through a hole in a target vertebra to anchor the implant, and a second tab disposable on the line to restrict movement of the first tab. The jig device is configured to be pulled out through the primary incision, extracting the line. The system further includes a fastener for securing the extracted line to spinal instrumentation, vertebral bone, soft tissue, or a combination thereof.