Positioning Device for Minimally Invasive Cardiac Septal Anchoring
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Solution Overview
Problem
Minimally invasive medical treatments face challenges in accurately positioning and orienting delivery devices due to the lack of direct accessibility to the treatment site, making it difficult to maintain the device's position relative to the implant site without additional measures.
Innovation Solution
A positioning device with a distal part that can be selectively expanded and anchored at the treatment site, allowing for precise positioning and counterforce application, comprising a mechanism to change shapes for easy deployment and retraction, and a tubular structure with slits or wires for engagement and retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a delivery device is deployed through a defect in minimally invasive treatment, then the treatment site can be accessed without large incisions, but it becomes difficult to determine and maintain the position and orientation of the delivery device relative to the defect site
Solution Approach 1:
The patent introduces a positioning device as an intermediary element that is delivered through the defect along with the delivery device. This positioning device serves as a mediator between the delivery device and the defect site, providing visual or detectable markers that enable precise positioning without requiring direct visual access to the treatment site. The positioning device acts as a bridge that translates the不可见 (invisible) positioning problem into a visible or detectable state.
2Measurement precision
If additional measures are taken to monitor the position of the delivery device, then positioning accuracy improves, but the complexity and time of the procedure increases
Solution Approach 1:
The patent combines the positioning function with the delivery device itself by integrating a positioning device that is delivered through the same defect. This merging eliminates the need for separate positioning systems or additional monitoring equipment, thereby reducing overall procedure complexity while maintaining positioning accuracy. The positioning capability is built into the delivery system rather than being added as a separate complex subsystem.
3Adaptability or versatility
If the delivery device is made adjustable for positioning, then adaptability to different defect locations improves, but the device complexity and difficulty of control increases
Solution Approach 1:
The positioning device incorporates features that enable self-positioning or self-adjustment mechanisms. The device can automatically adapt to the defect site geometry or maintain its position through self-stabilizing features, reducing the need for complex manual adjustments by the operator. This self-service capability maintains adaptability while simplifying control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easier deployment and anchoring of medical implants by providing a stable anchoring point, reducing the need for precise monitoring of the device's position relative to the defect site, facilitating the deployment of medical implants through minimally invasive procedures.
Implementation Method 1
a mechanism to selectively expand the distal part, enabling an operator to expand the distal part at his discretion
Implementation Method 2
The wire has at least a first and a second shape. For example, the first shape may be adapted to allow for easy transfer through a defect, whereas the second shape is adapted to allow for engaging at the defect site
Data Source
AI summary
The invention relates to a positioning device (1) comprising a distal part (8) that is adapted to be delivered through a defect, preferably an opening in a ventricular or atrial septum. It comprises a mechanism to selectively expand the distal part (8), such that before expansion, it can be deployed through said defect, and upon expansion, is mechanically prevented from being retracted through the same defect. Thus, the positioning device (1) is temporarily engaged at the defect site.