Wire-Guided Surgical Instrument for Precise Incisions
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Solution Overview
Problem
Existing surgical instruments, such as scalpels, face challenges in making precise incisions when enlarging a guidewire incision to accommodate larger medical devices, as manual enlargement can result in imprecise or larger cuts.
Innovation Solution
A surgical instrument with a cylindrical tube that integrates a guidewire channel, allowing for precise advancement and minimizing tissue trauma, featuring a beveled proximal end for easy skin penetration and a sliding cover mechanism for exposing a blade, ensuring accurate placement and secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual enlargement of guidewire incision is performed, then larger medical devices can be accommodated, but incision precision deteriorates and tissue trauma increases
Solution Approach 1:
A surgical instrument acts as an intermediary device between the guidewire and the final medical device placement. The instrument includes a guidewire receiving channel that guides the wire, a blade that follows the wire's path to make a precise incision, and a trocar that delivers the medical device through the incision. This intermediary system ensures the incision precisely follows the guidewire's trajectory while accommodating larger devices.
Solution Approach 2:
The guidewire is inserted first to establish the precise desired path through the tissue. The surgical instrument then follows this pre-established path, with the blade cutting along the guidewire's trajectory. This preliminary action of placing the guidewire ensures that subsequent incisions and device placements follow the optimal path determined during wire insertion.
2Adaptability or versatility
If guidewire incision is made to accommodate larger devices, then device placement is enabled, but tissue trauma increases due to imprecise cuts
Solution Approach 1:
The surgical instrument serves as a mediator that protects tissue by ensuring precise, controlled incisions. The blade is constrained to follow the guidewire's path exactly, preventing deviation that would cause unnecessary tissue damage. The cylindrical tube and trocar system then delivers larger devices through this precisely created pathway, minimizing overall tissue trauma.
Solution Approach 2:
The surgical instrument applies different properties to different parts: the blade portion makes a precise, minimal incision exactly where needed, while the broader trocar and delivery system handles the larger medical device. This local differentiation allows precise tissue cutting in the critical incision zone while accommodating larger devices elsewhere in the system.
3Manufacturing precision
If a surgical instrument with guidewire integration is used, then incision precision is improved, but device complexity increases
Solution Approach 1:
The surgical instrument is divided into distinct functional segments: a guidewire receiving channel, a blade assembly, a cylindrical tube, and a trocar. Each segment performs a specific function and can be manufactured separately using standard surgical instrument techniques. This segmentation maintains precision while allowing modular assembly and simplifying manufacturing compared to a fully integrated custom device.
Data Source
AI summary
Disclosed herein is a surgical instrument having a cylindrical tube affixed thereto. A guidewire can be threaded through the cylindrical tube to allow for advancement of the surgical instrument to a surgical site.