Vascular Suturing Device Internal Suture Path
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Solution Overview
Problem
Current methods for closing vascular punctures are inefficient and uncomfortable for patients due to prolonged bleeding and difficulty in suturing large arteries, often requiring prolonged pressure application or invasive devices that can lead to complications like oozing and knot loosening.
Innovation Solution
A suturing device comprising a proximal member with a needle channel, a distal member with a receptacle for suture material, and an intermediate member that allows for a linear needle pathway through tissue, enabling the suturing device to pierce tissue adjacent the puncture site and secure suture material within the vascular vessel, facilitating closure with the knot external to the wound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure is applied near or upstream of the puncture site for hemostasis, then bleeding is controlled, but the procedure becomes time-consuming and extremely uncomfortable or painful for the patient
Solution Approach 1:
The invention extracts the suture material deposition function from the external pressure application method. By inserting a distal member into the vessel lumen to deposit suture material directly at the puncture site, the patent eliminates the need for prolonged external pressure, thereby reducing recovery time while maintaining hemostasis effectiveness
Solution Approach 2:
The patent introduces an intermediary suture material deposition mechanism (distal member with receptacle) that mediates between the vessel wall and the external environment. This intermediary device enables internal suture placement without requiring prolonged external compression, resolving the contradiction between effective hemostasis and patient comfort/time
2Ease of manufacture
If traditional suturing devices are used that leave an inverted suture path, then the puncture wound can be closed, but complications such as oozing, excessive bleeding, and knot loosening may arise
Solution Approach 1:
The patent inverts the traditional suture path orientation. Instead of the suture running from exterior tissue back through the wound (inverted path), the suture material is deposited internally within the vessel lumen and extends across the puncture opening to the exterior, with the knot placed externally. This reversal eliminates complications associated with inverted suturing while maintaining closure capability
Solution Approach 2:
The invention extracts the suture material from external application and places it internally within the vessel lumen. By depositing suture material inside the vessel and having it extend across the puncture opening, the patent eliminates the problematic inverted path through external tissue, thereby preventing oozing, excessive bleeding, and knot loosening
3Ease of operation
If needles are deployed from the device to suture tissue adjacent the puncture wound, then subcutaneous suturing can be facilitated, but the suture path must run from exterior tissue back through the wound creating an inverted path
Solution Approach 1:
The patent inverts the suture path configuration by having the suture material originate internally within the vessel lumen rather than from external tissue. The suture extends across the puncture opening to the exterior with the knot placed externally, reversing the traditional inverted path approach while maintaining ease of subcutaneous suturing operation
Data Source
AI summary
A surgical device for suturing vascular vessels is described, as well as methods for suturing tissue employing the surgical device. The device includes a distal member for insertion into a vascular vessel puncture wound. The distal member contains a suture and needle engaging fitting. At least one needle is advanced through tissue adjacent the puncture wound and into the needle engaging fitting to draw lengths of suture material which can then be used to close the puncture wound.