Subcutaneous Vascular Access Port With Expandable Implant Base
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Solution Overview
Problem
Existing vascular access ports cause harm to local tissues and decrease target blood vessel functionality due to repeated needle pricking and are invasive, requiring improvements for less traumatic and simpler implantation, especially for chronic diabetes, dialysis, or chemotherapy patients.
Innovation Solution
A vascular access port system with a port body and a port body extension that can be subcutaneously changed from a delivery configuration to a deployed configuration, forming a unified structure with increased volume and base area, allowing for atraumatic tissue separation and fixation, facilitated by a port delivery apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional vascular access port is implanted using surgical methods, then the port can be securely implanted in the subcutaneous tissue, but the procedure is invasive and causes tissue trauma
Solution Approach 1:
The port device is divided into two separate components: a port body and a port body extension. The extension is implanted first through a minimally invasive percutaneous approach, creating a subcutaneous pocket and establishing a tract. The port body is then delivered through this pre-formed tract and connected to the extension, avoiding the need for large surgical incisions and reducing tissue trauma while ensuring secure implantation.
2Duration of action of moving object
If repeated needle pricking is performed through the port for fluid delivery, then fluid administration can be repeated over time, but harm accumulates to local tissues and blood vessel functionality decreases
Solution Approach 1:
The port device serves as an intermediary structure with a septum that allows repeated needle punctures. The septum is designed to seal around the needle after each puncture, maintaining the integrity of the port cavity and preventing tissue fluid leakage. This intermediary mechanism enables repeated fluid administrations over extended periods while minimizing cumulative tissue damage compared to direct repeated venous punctures.
3Stability of the object's composition
If a port body extension is added to the vascular access port system, then the port can be deployed with increased volume and base area for improved stability, but the device complexity increases
Solution Approach 1:
The port system is segmented into a port body and a port body extension that are implanted separately through different approaches. The extension is inserted first through a small percutaneous incision and positioned in the subcutaneous tissue to provide a stable base. The port body is then delivered through a separate tract and connected to the extension, allowing each component to be optimized for its specific function while contributing to overall system stability.
Solution Approach 2:
The port body and port body extension are designed to connect together to form a unified port structure. The connection mechanism integrates the two components, combining the stability-providing extension with the functional port body to create a single stable implant that benefits from the increased volume and base area of the combined structure.
Data Source
AI summary
Disclosed is a vascular access port selectively changeable subcutaneously from delivery configuration to deployed configuration. The vascular access port includes a port body and a port body extension being partly or wholly disengaged in the delivery configuration, and fixedly connected to form a unified structure of the vascular access port, greater in volume than the port body, in the deployed configuration. Methods and kits for deploying the vascular access port in a body of a subject are also disclosed.