Vessel Lining Mesh Deployment Device
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Solution Overview
Problem
Percutaneous vascular procedures risk damaging the inner lining of vessel walls due to the placement and advancement of surgical instruments, leading to complications such as micro-scratching or dislodging of calcium or clots.
Innovation Solution
A deployment device with a housing, guidewire channel, and a mesh that can be compressed and expanded within the vessel to provide protection, allowing the mesh to line the vessel interior while instruments are used, and then be removed, using a lock mechanism to release the mesh from the tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If surgical instruments are placed and advanced in the vessel, then the vessel can be accessed and procedures can be performed, but the inner lining of the vessel wall is exposed to damage from the instruments
Solution Approach 1:
A mesh liner is introduced as an intermediary protective layer between the surgical instruments and the vessel wall. The mesh is delivered through a catheter system, expanded to line the vessel, and provides a protective barrier that allows instruments to be advanced while preventing direct contact with and damage to the vessel wall.
Solution Approach 2:
The mesh liner is deployed in advance before the actual surgical procedure begins. By lining the vessel beforehand, the protective barrier is already in place to prevent damage from subsequent instrument manipulation, rather than attempting to protect the vessel during or after damage occurs.
2Object-affected harmful factors
If a mesh is expanded inside the vessel to protect the vessel wall, then protection is provided, but the device complexity increases
Solution Approach 1:
The mesh liner is nested within a delivery catheter in a compressed state for minimally invasive insertion. Once positioned in the vessel, the mesh is expanded from its compact nested form to line the vessel. The delivery catheter itself is nested within an outer sheath, creating a multi-layer nested structure that simplifies insertion while enabling complex functionality.
Solution Approach 2:
The mesh transitions from a static compressed state during delivery to a dynamic expanded state when deployed. This dynamic transformation allows the same structure to serve dual purposes: easy insertion in compressed form and effective protection when expanded, reducing the need for multiple separate components.
3Reliability
If the mesh is permanently implanted in the vessel, then continuous protection is provided, but the mesh cannot be removed if complications arise
Solution Approach 1:
The mesh is designed with dynamic attachment and detachment capabilities. During deployment, the mesh is secured to the delivery catheter in a compressed state. After expansion, the mesh can be selectively detached from the catheter using a release mechanism (such as a breakable bond or mechanical release), allowing the mesh to remain in place for protection or be removed if needed, providing adaptability while maintaining reliability.
Solution Approach 2:
The delivery system is segmented into separable components: the mesh, the delivery catheter, and the outer sheath. This segmentation allows the mesh to be delivered as part of an integrated system while enabling selective separation and removal of the mesh from the delivery system after deployment, providing both continuous protection and removal capability.
Data Source
AI summary
A deployment device for lining a vessel having a housing having a proximal end and a distal end opposite the proximal end, the housing defining a guidewire channel, a tube elongated along a longitudinal axis, the tube having a proximal end and a distal end spaced from the proximal end of the tube along the longitudinal axis, a sheath assembly having a hub removably coupled to the distal end of the housing, and a mesh removably coupled to the tube and positioned along the tube. The tube and the sheath assembly are configured to move along the guidewire and into the vessel through a puncture and release the mesh inside the vessel when at least one of the tube and the mesh is actuated. The device is used as a method of mitigating potential injury or harm to the integrity of the patient’s vessel lining.