Suture Securement Apparatus for Catheter Puncture Closure
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Solution Overview
Problem
Existing suture securement methods, such as purse string sutures, face challenges in maintaining tension and preventing puckering or distortion of the skin, making it difficult to adjust or remove sutures, especially for non-doctor practitioners, leading to patient discomfort and potential tissue damage.
Innovation Solution
A suture securement apparatus with an extension tube and threading assembly that allows for adjustable tension and full release of sutures, featuring a clasp and suture loop to prevent accidental pulling and facilitate easy threading and tension control, enabling secure closure of percutaneous catheter puncture sites without skin distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a knot is used to maintain tension on the purse string suture, then the desired tension is maintained, but the integrity of the suture is compromised and subsequent loosening or retightening becomes difficult or impossible
Solution Approach 1:
The patent introduces a securement device as an intermediary component between the suture and the tissue. This device includes a body with a lumen through which the suture passes, and a mechanism that can independently secure or release the suture without compromising the suture itself. The securement device acts as a mediator that maintains tension when needed while allowing easy adjustment or removal when required, thus resolving the contradiction between maintaining reliable tension and enabling easy operation.
2Reliability
If excessive tension is applied to the purse string suture to secure the wound, then hemostasis is achieved, but puckering or unnatural distortion of the patient's skin occurs causing discomfort and tissue damage
Solution Approach 1:
The securement device incorporates a dynamic tensioning mechanism that allows for controlled and distributed application of force. The device can be adjusted to apply gradual tension rather than excessive force, and the tension can be modified or released as needed. This dynamic approach ensures hemostasis is achieved while minimizing skin distortion and tissue damage, resolving the contradiction between reliable hemostasis and avoiding harmful effects.
3Ease of operation
If a secondary securement apparatus is used to secure the ends of the suture, then the suture is secured, but excessive tension is placed on the purse string suture causing skin puckering and distortion
Solution Approach 1:
The securement device is designed with localized functional zones: a body portion that interfaces with the tissue, a lumen for suture passage, and a securement mechanism positioned at specific locations. The device distributes the securement function across these localized regions rather than concentrating excessive force at a single point. This local quality approach allows effective suture securement while preventing the excessive tension that causes skin puckering and distortion.
Data Source
AI summary
A suture securement apparatus for selectively securing one or more ends of a suture while allowing adjustments in the tension or a full release of the sutures intermittently after a prolonged period of time. The suture securement apparatus can be particularly adapted for use with a purse-string suture to close a percutaneous catheter puncture site without causing puckering or distortion of the skin at the purse string suture site. The suture securement apparatus permits a practitioner to subsequently modify the amount of tensioning or full release of the sutures at the catheter insertion site. A threading assembly for use with the suture securement apparatus and being adapted to facilitate threading of sutures along the length of the suture securement apparatus.