Vessel Sealing Device Automatic Deployment Hemostasis
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Solution Overview
Problem
Existing vessel-sealing devices for blood vessels rely on clotting and require multiple steps, sheath changes, and manual deployment, which can lead to bleeding complications and require prolonged bed rest for patients.
Innovation Solution
A device with a seal assembly that includes a first and second portion, attached to a shaft and pusher mechanism, allowing for automatic deployment and sealing of the blood vessel with minimal steps, without relying on clotting, and without the need for sheath changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional pressure application and clotting-based closure devices are used, then hemostasis can be achieved, but the procedure requires prolonged bed rest (8-24 hours) and carries risk of complications
Solution Approach 1:
The invention extracts the clotting dependency from the hemostasis process by introducing a mechanical sealing system that creates immediate physical closure of the puncture site through apposing tissue surfaces, eliminating the need for prolonged clotting time and associated bed rest requirements
Solution Approach 2:
The sealing device is pre-configured with deployable sealing elements that are positioned and activated immediately upon insertion, creating instant mechanical seal before the patient needs to ambulate, thereby preliminary establishing hemostasis without waiting for clotting
2Reliability
If multi-step deployment procedures with sheath changes are used, then vessel sealing can be achieved, but the device complexity and procedural time increase
Solution Approach 1:
The invention merges the sealing function into a single integrated device that remains in place within the existing sheath, combining the sealing elements, deployment mechanism, and retention features into one unified structure that eliminates the need for sheath changes or multiple separate devices
Solution Approach 2:
The sealing device is designed to perform multiple functions within a single apparatus: it provides mechanical sealing, maintains hemostasis, and allows for controlled deployment and retrieval, all while compatible with standard sheath dimensions and eliminating the need for specialized sheath changes
3Reliability
If manual deployment requiring surgeon feel is used, then the device can be deployed, but the ease of operation decreases and requires training
Solution Approach 1:
The sealing device incorporates self-aligning and self-deploying features that automatically position the sealing elements correctly upon insertion or activation, eliminating the need for the surgeon to manually manipulate or feel for the correct position, thereby simplifying operation while maintaining reliability
Solution Approach 2:
The device includes visual or tactile feedback mechanisms that indicate when proper deployment has been achieved, providing immediate confirmation to the operator without requiring extensive training or experience to interpret surgical feel, thus enhancing ease of operation
Data Source
AI summary
A device and a method for sealing an opening in the wall of a blood vessel is provided. The device includes pushing mechanism, a shaft fixedly connected to the pushing mechanism, a seal assembly attached to the distal end of the shaft, and a pushing rod also engaging the seal assembly, the pushing mechanism moving the pushing rod from a first position to a second position.