Suture Needle Harvesting with Guided Gaps for Easy Extraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for achieving hemostasis at vascular puncture sites, such as manual compression and bioabsorbable sealing bodies, are inefficient, uncomfortable for patients, and can lead to complications like bleeding, hematoma, and pseudo-aneurysm formation, while suture applying devices face challenges in efficiently removing needles due to the need for manual force and insufficient needle holders.
Innovation Solution
A device and method for efficiently removing needles from a suturing device system, utilizing a needle removal device with moveable members and receptacles to align and deform the needles, allowing for secure and easy extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual compression is used to achieve hemostasis, then bleeding can be stopped, but the procedure is time-consuming and requires one-half hour or more of compression
Solution Approach 1:
The suturing device performs preliminary action by placing sutures through the puncture site during the vascular procedure itself, so that hemostasis is achieved immediately when the sutures are tied, eliminating the need for prolonged post-procedure compression
2Reliability
If manual compression is used to achieve hemostasis, then bleeding can be stopped, but the patient experiences discomfort and frequently requires analgesics
Solution Approach 1:
The suturing device performs hemostasis during the procedure itself rather than requiring prolonged post-procedure compression, eliminating patient discomfort and the need for analgesics
3Reliability
If excessive pressure is applied during manual compression, then hemostasis can be achieved, but the underlying blood vessel may be occluded resulting in ischemia and/or thrombosis
Solution Approach 1:
The suturing device achieves hemostasis by placing sutures through the puncture site during the procedure, allowing controlled closure without the excessive compression forces that cause vessel occlusion and thrombosis
Solution Approach 2:
The suture acts as an intermediary mechanism to achieve hemostasis through controlled tissue approximation rather than direct compression, avoiding the harmful effects of excessive pressure on the blood vessel
4Ease of operation
If suture applying devices are used, then needles can be removed from the device, but manual force is required and needle holders are insufficient
Solution Approach 1:
The needle holder is designed to automatically grasp and guide the needle during the suturing process, eliminating the need for manual force application by the operator and making the device self-sufficient in needle manipulation
Data Source
AI summary
A method of removing needles operatively associated with suture through tissue surrounding an access tract, the method comprising advancing an elongate distal member along the access tract, locating an elongate proximal member in contact with tissue surrounding the puncture site, the elongate proximal member comprising a guide disposed within the elongate proximal member, a perimeter of the guide forming a plurality of needle receiving gaps that are circumferentially spaced about a needle deployment actuator with a portion of the guide disposed between adjacent needle receiving gaps extending outwardly towards a wall of the lumen of the elongate proximal member, the needle deployment actuator extending to the elongate distal member and being configured to initiate proximal movement of a needle toward an opening of the elongate proximal member, and actuating the needle deployment actuator to move the needle toward the opening of the elongate proximal member.