Surgical Tissue Retractor with Planetary Gear and Ratchet Locking
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Solution Overview
Problem
Current retractor systems in surgical procedures lack control over tissue distraction, leading to inadequate access to the surgical site and potential trauma to surrounding tissue.
Innovation Solution
A retractor system comprising a frame with rotatable and linearly translatable arms, coupled with a planetary gear mechanism and ratchet-locking mechanism, allowing for precise control over the separation and angulation of blades to enhance access to the surgical site.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If current retractor systems are used to provide access to the surgical site, then the surgical site can be accessed, but tissue trauma increases and control over tissue distraction is lost
Solution Approach 1:
The retractor system employs dynamic control mechanisms including a ratchet-locking system that allows the blades to be positioned at various angles and distances from the incision site. The blades can be independently adjusted to achieve refined tissue retraction while maintaining control over the degree of distraction, thus minimizing tissue trauma while ensuring adequate surgical access.
2Area of stationary object
If multiple blades are used to improve access to the surgical site, then access is enhanced, but control over tissue distraction decreases
Solution Approach 1:
The retractor system divides the retraction function into multiple independent blades that can be individually adjusted. Each blade can be positioned separately to achieve the desired retraction configuration, allowing precise control over tissue distraction while creating adequate surgical access area. The independent adjustability of each blade enables fine-tuned control without compromising overall access.
Data Source
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AI summary
Methods and devices for retracting tissue in a surgical procedure to allow access to the surgical site. Retractor systems and methods that comprise a retractor frame comprising rotatable arms and a linearly translatable arm, the rotatable arms and the linearly translatable arm each coupled to blades that can angulate. Systems for securing a retractor system to a patient's spine, the systems comprising a retractor blade and a shim device.