Adjustable Arm Suturing Device for Variable Aperture Sizing
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Solution Overview
Problem
Current suturing devices are limited in their ability to accommodate various sizes of apertures due to fixed needle positions and angles, making them unsuitable for a range of wound sizes and locations.
Innovation Solution
An adjustable suturing device with a body, arms, and a needle guide system that allows arms to move laterally and pivot, orienting the needle guide to direct the needle towards a catch target at desired angles, enabling the device to suture different sizes of apertures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed needle positions and angles are used in suturing devices, then the device structure is simple, but the device cannot accommodate various sizes of apertures
Solution Approach 1:
The patent implements dynamic adjustability by allowing the needle to be positioned at multiple angles (0, 45, 90 degrees) and distances from the body through movable arms and adjustable mechanisms. This transforms a static fixed-needle design into a dynamic system that adapts to different aperture sizes while maintaining manageable structural complexity through standardized adjustment increments.
2Adaptability or versatility
If a single needle position is used, then the device is easy to operate, but it is limited to specific wound sizes
Solution Approach 1:
The patent segments the needle positioning system into discrete, standardized角度 (0, 45, 90 degrees) and distance increments. This segmentation allows the operator to select appropriate positions for different wound sizes without dealing with continuous adjustment complexity, maintaining ease of operation while expanding the range of treatable aperture sizes.
3Adaptability or versatility
If the needle can move in different angles and positions, then various aperture sizes can be sutured, but the device structure becomes more complex
Solution Approach 1:
The patent employs a universal needle guide system that can accommodate multiple needle angles and positions through a single integrated structure. The guide system serves multiple functions: directing needles at various angles, maintaining proper orientation, and enabling adjustment to different distances. This multi-functionality reduces the need for separate components for each adjustment type, thereby limiting the increase in overall device complexity while achieving versatility.
Data Source
AI summary
A suturing device, and methods for suturing various sizes of apertures in tissues, are presented. The suturing device has a body with at least one or more adjustable arms that are coupled with catch targets. The arms are coupled with needle guides such that movements of the arms orient the needle guides to direct the needles towards the catch targets. The catch targets are coupled with sutures, such that when the needles reach the targets, they capture and pull the sutures back to the body. By changing the angles at which the arms extend from the body, the catch targets are moved closer to, or farther from, the body, and the suture device is readily configured to suture various sizes of apertures.