Surgical RetraCTOR Connector With Side-Loading Lock
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Solution Overview
Problem
Current surgical retractors with interchangeable blades face challenges in easy alignment and positive locking, leading to potential detachment during repositioning and misalignment issues, which complicates precise surgical exposure and stability.
Innovation Solution
A connector system featuring a body member with an opening for receiving a retractor blade nipple, a pivotally attached retainer, and a lock mechanism that securely locks the nipple in place, allowing for easy insertion and secure retention without precise alignment, using a spring or push-button mechanism for locking and ejecting the blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a top-loading ball snap design is used to connect retractor blades to the retractor body, then the retractor blades can be positively locked into place, but the surgeon must precisely align the sockets over the ball snaps before attachment, which is difficult and time-consuming
Solution Approach 1:
Instead of requiring the blade to be aligned with and loaded onto a protruding ball snap (top-loading), the invention inverts the design so that the ball snap is contained within a socket and the blade is loaded from the side. This reverses the loading direction and eliminates the need for precise top-down alignment, allowing the blade to be simply inserted laterally into the socket where it engages the ball snap automatically.
Solution Approach 2:
The invention introduces a socket as an intermediary component that houses the ball snap and provides a guided pathway for blade insertion. The socket acts as a mediator between the ball snap and the blade, allowing the blade to engage the ball snap without requiring direct alignment between the blade and the ball snap, thus simplifying the attachment process while maintaining secure locking.
2Ease of operation
If current side-loading designs are used to allow easy loading of retractor blades, then the alignment process is simplified, but the retractor blades are not positively locked and may become detached during repositioning
Solution Approach 1:
The invention merges two previously separate functions into a single integrated mechanism: the side-loading ease of insertion and the positive locking retention. By combining the lateral insertion pathway of side-loading designs with the positive locking capability of ball snap mechanisms within a unified socket structure, the invention achieves both easy loading and secure retention simultaneously, eliminating the trade-off present in previous designs.
3Reliability
If hinged arms and ratcheting mechanisms are included in the retractor body, then self-retaining capability is achieved, but the alignment process becomes more complicated when attaching retractor blades
Solution Approach 1:
The invention extracts the alignment complexity from the overall retractor assembly by isolating the connection mechanism to a simple side-loading socket system. By separating the self-retaining function (handled by hinged arms and ratchets) from the blade attachment function (handled by the socket and ball snap), the invention allows each subsystem to operate independently, eliminating the interference between these mechanisms that previously complicated the alignment process.
Data Source
AI summary
A connector for a surgical retractor is shown. The connector includes a body member having an opening for receiving a nipple of a retractor blade. The connector also includes a retainer pivotally attached to the body member between an open position and a closed position. A lock mechanism locks the retainer in the closed position so that the nipple of the retractor blade is locked in the connector.