Surgical Retractor Swivel Gear Locking Mechanism
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Solution Overview
Problem
Conventional surgical retractor blades lack a mechanism to easily switch between locked, unlocked, and swivel states without changing the retractor blade's position, which can complicate the exposure and access of surgical sites.
Innovation Solution
A retractor system with a retractor arm and a retractor blade connector that includes a swivel gear and mechanisms like buttons, levers, or plungers to selectively switch among locked, unlocked, and swivel states, allowing the retractor blade to be positioned and adjusted without disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional surgical retractor blades are used without a swivel gear mechanism, then the structure is simple, but the ability to switch between locked, unlocked, and swivel states is limited, reducing operational flexibility
Solution Approach 1:
The retractor blade connector incorporates a swivel gear mechanism that enables dynamic switching between locked, unlocked, and swivel states. The swivel gear includes teeth that can engage with detents to lock the blade, disengage to unlock, or partially engage to allow controlled swiveling, providing operational flexibility without requiring complete disassembly or repositioning of the blade.
2Stability of the object's composition
If the retractor blade is securely locked to maintain position, then stability is improved, but the ability to adjust or swivel the blade is reduced
Solution Approach 1:
The swivel gear mechanism allows the blade to transition between stable locked positions and flexible unlocked/swivel positions. When locked, the teeth engage with detents to firmly hold the blade at a specific angle. When unlocked or partially engaged, the blade can be swiveled to new positions and locked again, providing both stability during use and ease of adjustment when needed.
Solution Approach 2:
The locking mechanism is segmented into discrete states (locked, unlocked, swivel) achieved through the interaction of gear teeth with multiple detents. This segmentation allows the blade to be securely held at various angular positions while maintaining the ability to transition between states through a single locking component rather than requiring complete disengagement.
3Ease of operation
If the retractor blade connector includes multiple switching mechanisms, then operational flexibility is improved, but the complexity of the connector increases
Solution Approach 1:
The swivel gear mechanism serves multiple functions: it locks the blade in place, unlocks for adjustment, and allows controlled swiveling, all through a single integrated component. The gear teeth interact with multiple detents to provide different locking positions, eliminating the need for separate buttons, levers, or plungers for each function and reducing overall connector complexity while maintaining operational flexibility.
Data Source
AI summary
A retractor system includes a retractor arm and a retractor blade attached to the retractor arm via a swivel gear of a retractor blade connector. The retractor blade includes an attachment post extending through a port of the swivel gear. The retractor blade connector further includes a swivel gear detent and a plunger. The swivel gear detent is positioned to selectively engage the swivel gear and prevent the swivel gear and attached retractor blade from rotating about the rotational axis. The plunger is movable among at least a locked position and an unlocked position. In the locked position, the plunger urges the swivel gear detent into engagement with the swivel gear and prevents rotation of the swivel gear and attached retractor blade about the rotational axis. In the unlocked position, the plunger permits the swivel gear and attached retractor blade to rotate past the swivel gear detent.