Aortic Retractor Plate With Threaded Radial Expansion
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Solution Overview
Problem
Existing blood vessel support tools, such as those described in Patent Document 1, are inadequate for maintaining aortic widening in the radial direction during aortic valvuloplasty procedures.
Innovation Solution
A retractor with a plate-shaped member having longitudinal and lateral directions, featuring a curved center and multiple holes, is inserted into the aorta to be widened by pulling threads through these holes, allowing for radial expansion and optionally incorporating features like blood suction and myocardial protective liquid injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a retractor is held in one hand and a holder in the other hand during surgery, then the surgeon can manipulate both instruments, but the surgeon's hands are occupied and cannot perform other tasks
Solution Approach 1:
The patent combines the retractor and holder into a single integrated instrument that can be held and operated with one hand. The retractor blades are attached to a holder shaft, creating a unified device that eliminates the need to separately manipulate two instruments, thereby freeing the surgeon's other hand for additional tasks.
Solution Approach 2:
The integrated instrument serves multiple functions simultaneously - it can retract tissue, hold position, and be manipulated with a single hand. The device allows the surgeon to perform retraction while maintaining the ability to perform other surgical tasks with the freed hand, increasing overall surgical versatility.
2Ease of manufacture
If separate retractors and holders are used, then each component can be optimized independently, but the overall system complexity increases and requires two hands to operate
Solution Approach 1:
The patent integrates the retractor blades with the holder shaft into a single manufactured unit. This combination reduces the number of separate components that need to be assembled and managed during surgery, simplifying the overall system while maintaining the ability to optimize the integrated design for manufacturing efficiency.
3Adaptability or versatility
If a holder is designed to accommodate multiple retractor types, then versatility is improved, but the holder size and complexity increase
Solution Approach 1:
The holder is designed with adjustable features that allow it to accommodate different retractor blade configurations. The holder can be adjusted during surgery to fit various retractor types, providing versatility without requiring multiple specialized holders. This dynamic adjustability maintains compatibility while avoiding the complexity of designing entirely separate holders for each retractor type.
Data Source
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AI summary
To provide a retractor and a holder. The retractor has a plate shape, including a plurality of holes penetrating from a front surface to a back surface, and in which the retractor is inserted into an aorta, and when one end side of a thread that penetrates from the front surface to the back surface through one of the plurality of holes and penetrates from an inside to an outside of the aorta, and the other end side of the thread that penetrates from the front surface to the back surface through a hole of the plurality of holes different from the hole through which the one end side penetrates and penetrates from the inside to the outside of the aorta are pulled, the aorta is widened in a radial direction. The holder includes an annular portion that has an annular shape and is formed of a plurality of notches on an upper surface in a radial direction; and a support portion that supports the annular portion, in which the holder is disposed such that an aorta is located inside an inner periphery of the annular portion, and a thread configured to be hooked on a retractor disposed in the aorta and penetrate from an inner wall side to an outer wall side of the aorta is fixed by the notch.