Vascular Protector Guide for Spinal Revision Safety
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Solution Overview
Problem
During revision surgeries to the spine, the presence of scar tissue obscures vascular structures and anatomical landmarks, posing a significant risk of injury to sensitive vascular anatomy, particularly in the anterior spinal region, where veins are susceptible to damage due to their flat and thin-walled nature.
Innovation Solution
A vascular protector and guide, composed of synthetic or organic materials like PTFE or xenograft collagen-like matrices, is placed around vascular structures and attached to vertebral bones and muscles, featuring re-entrant bends and machine-readable markers to facilitate safe navigation and identification of surgical planes during revision surgeries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional surgical approach is used to access anterior spinal column, then surgical exposure is achieved, but vascular structures are at high risk of injury due to mobilization and scar tissue adhesion
Solution Approach 1:
The vascular protector is placed around vascular structures before the surgical procedure begins, creating a protective barrier in advance. This preliminary placement prevents direct contact between surgical instruments and vascular structures, thereby reducing injury risk while maintaining surgical access to the anterior spinal column.
Solution Approach 2:
The vascular protector acts as an intermediary barrier between the surgical field and vascular structures. This intermediate element allows surgeons to work in the anterior spinal region while the protector shields vulnerable vessels from direct manipulation, retraction, and scar tissue adhesion.
2Ease of operation
If revision surgery is performed without vascular protection, then surgical access is obtained, but identification of vascular structures becomes difficult due to scar tissue obscuring anatomical landmarks
Solution Approach 1:
The vascular protector incorporates visual indicators such as color coding or fluorescent markers that make it visible to surgeons during revision surgery. This visual enhancement helps surgeons quickly locate and identify the protected vascular structures through scar tissue, improving detection without requiring direct visualization of the vessels themselves.
Solution Approach 2:
The vascular protector serves as a visible intermediary marker that guides surgeons through scar tissue to locate underlying vascular structures. The protector's visual indicators provide a reference point that simplifies the navigation process, allowing surgeons to access the surgical site while maintaining awareness of vascular locations.
3Ease of operation
If vascular structures are mobilized for exposure, then surgical access to spinal site is improved, but scar tissue adheres to vessels creating blind navigational field in revision surgery
Solution Approach 1:
The vascular protector acts as an intermediary that prevents direct adhesion between scar tissue and vascular structures. By placing a barrier around the vessels before surgery, the protector eliminates the harmful interaction that would otherwise create a blind navigational field, maintaining anatomical landmark visibility for future revisions.
Solution Approach 2:
The vascular protector is placed in advance around vascular structures before the surgical procedure. This preliminary protective measure prevents scar tissue from adhering to the vessels during the initial surgery, thereby preserving anatomical landmark visibility for subsequent revision surgeries without requiring vessel mobilization.
4Ease of operation
If veins are retracted during surgery, then vascular exposure is achieved, but delayed evidence of venous injury may occur due to tamponade
Solution Approach 1:
The vascular protector serves as a protective intermediary that prevents direct compression and tamponade of vascular structures during surgery. This barrier allows veins to remain in their natural position without requiring retraction, thereby eliminating delayed injury evidence while still permitting adequate surgical exposure of the anterior spinal column.
Data Source
AI summary
Methods and apparatus provide for: coupling an elongate guide substantially at a first end to at least one vertebral body of a spinal column of a patient; and extending a second end of the guide to a structure of the patient spaced in an anterior direction away from the at least one vertebral body towards an entry incision.