Suturing Device Arteriotomy Closure Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current medical suturing systems for closing arteriotomies after vascular procedures are inefficient, requiring prolonged recovery times, increased patient discomfort, and higher risks of complications due to reliance on manual compression or other methods that do not consistently ensure reliable closure.
Innovation Solution
A suturing device with a handle, elongated body, and sliding shaft, featuring an inflatable balloon and moveable needles that deploy through the balloon to penetrate the vessel wall and position sutures for secure closure, allowing for rapid and consistent arteriotomy sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual compression or traditional closure methods are used, then the arteriotomy can be closed, but the recovery time is prolonged and patient discomfort increases
Solution Approach 1:
The patent replaces manual compression and traditional mechanical closure methods with an automated suturing device that uses a motorized needle driver to rapidly deploy sutures. This substitution of manual mechanical operations with an automated motorized system achieves reliable arteriotomy closure while dramatically reducing the time required, thereby resolving the contradiction between closure reliability and recovery time.
Solution Approach 2:
The invention changes the key parameter of closure speed by using a motorized needle driver that can rapidly advance needles and deploy sutures in sequence. This parameter change from manual operation speed to motorized operation speed enables the system to maintain high reliability of closure while reducing the overall procedure time and patient recovery time.
2Reliability
If manual compression is applied for extended periods, then hemostasis is achieved, but patient discomfort increases and complications risk rises
Solution Approach 1:
The patent replaces the harmful prolonged manual compression method with an automated suturing system that achieves hemostasis through precise suture placement. This substitution eliminates the need for extended compression that causes patient discomfort and potential tissue damage, while reliably achieving hemostasis through controlled suture deployment.
Solution Approach 2:
The suturing device performs the hemostasis function autonomously through its automated needle and suture deployment mechanism, eliminating the need for manual compression. The system self-regulates the closure process, achieving hemostasis without requiring the patient to endure prolonged compression and associated discomfort.
3Reliability
If traditional suturing methods are used, then the arteriotomy can be closed, but the procedure is time-consuming and less consistent
Solution Approach 1:
The patent replaces traditional manual suturing with a motorized needle driver that automates the needle advancement and suture deployment process. This mechanical substitution provides consistent, repeatable closure actions that improve reliability while the automated nature of the system increases productivity by reducing the time required for each suture placement.
Solution Approach 2:
The motorized needle driver enables continuous operation, advancing needles and deploying sutures in rapid succession without the interruptions inherent in manual suturing. This continuity of useful action maintains consistent closure quality while significantly increasing the speed of the procedure, thereby resolving the contradiction between closure consistency and closure speed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device enables rapid and reliable closure of arteriotomies, reducing recovery time, minimizing patient discomfort, and lowering the risk of complications by providing a consistent and efficient method for sealing blood vessels during and after interventional procedures.
Implementation Method 1
An inflatable balloon is mounted on a distal portion of the shaft, the inflatable balloon being operable to alternate between an inflated configuration in which the inflatable balloon is inflated and a deflated configuration in which the inflatable balloon is not inflated
Implementation Method 2
Each needle includes a distal end configured to penetrate through a vessel wall
Data Source
AI summary
A suturing device includes a handle, an elongated body, at least one suture snag, at least one pair of needles, and at least one suture pair. The suture snag is moveable between a deployed position in which two distal arm portions thereof radially extend away from the elongated body and a retracted position in which the two distal arm portions are disposed within the elongated body. The suture pair is slidingly disposed through the needle pair. The suturing device deploys the suture snag within a vessel adjacent to an arteriotomy, extends the needle pair through a vessel wall around the arteriotomy and through the deployed suture snag, extends the suture pair beyond the distal ends of the needle pair, and then utilizes the suture snag to capture the extended suture pair by retracting the suture snag to pull first or distal ends of the sutures back into the suturing device. An inflatable balloon or an expandable suture capture component may be alternatives to the suture snag for capturing the suture ends.