Interventional Delivery Handle With Switchable Clipping and Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing control systems and delivery systems for interventional devices face challenges such as complex switching between clipping and separation processes, lack of visual indication for closure member opening and closing, chaotic layout of tubing and manipulation shafts, and difficulty navigating curved pathways, leading to potential vascular injury.
Innovation Solution
A control system with a control handle featuring a manipulation shaft, drive shaft, and a switching mechanism that allows seamless switching between gripping and separation processes, provides visual indication through observation windows, and a structured layout with guided manipulation shafts and wires, along with a flexible delivery system for navigating complex cardiovascular pathways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different operational methods are used for clipping and separation processes, then the control system can achieve precise control for each process, but the switching between these two processes becomes complex
Solution Approach 1:
The control handle is designed with a universal operational mechanism that can perform both clipping and separation processes using the same basic operation (rotating the knob). The switching mechanism enables the single control handle to switch between two functional modes: one for controlling the closure members to clip the valve, and another for controlling the clutch mechanism to separate the delivery system from the valve clipping device.
2Device complexity
If operators cannot visually ascertain the degree of opening and closing of closure components, then the control system is simpler, but additional in-vivo imaging equipment is required which can be harmful to the human body
Solution Approach 1:
The patent creates a visual copy of the closure member's opening and closing state through the indicating part. As the closure members rotate, the indicating part rotates correspondingly and can be observed through the observation window, providing a visual representation (copy) of the distal end's state without requiring actual imaging of the interior of the body.
3Ease of manufacture
If the layout of tubing, manipulation shafts, and manipulation wires is chaotic, then the control system is easier to assemble, but the structural stability deteriorates
Solution Approach 1:
The control system components are segmented into distinct functional modules: the outer housing contains the drive shaft and clutch mechanism, the manipulation shaft is separately housed, and the manipulation wires are routed through dedicated pathways. The inner tube assembly is separated into an inner tube and outer tube with各自的功能。This segmentation allows each component to be independently assembled and positioned, ensuring proper alignment and structural stability while maintaining assembly ease.
4Strength
If the delivery system lacks flexibility, then the structural integrity is maintained, but the ability to navigate through curved pathways deteriorates, potentially causing vascular injury
Solution Approach 1:
The delivery system exhibits local quality variations in its structural properties. The distal end of the delivery system, which needs to navigate curved pathways, is designed with greater flexibility and compliance. The proximal end, which needs to maintain structural integrity for controlled manipulation, remains stiffer. This gradient in mechanical properties allows the delivery system to navigate curved cardiovascular pathways without causing vascular injury while maintaining overall structural integrity.
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 convenient and reliable switching between gripping and separation processes, eliminates the need for additional imaging equipment, ensures structural stability, and reduces vascular injury by facilitating easy assembly and navigation through curved pathways.
Implementation Method 1
The detent block is sleeved over the drive shaft and is capable of sliding relative to the drive shaft between a first position and a second position
Implementation Method 2
The spring applies a biasing force to the clutch block, causing the first compression structure to press against the second compression structure
Implementation Method 3
the drive shaft comprises a threaded connection portion at its proximal end, and the knob is provided with an internal thread that matches the threaded connection portion
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present disclosure provides a control system and a delivery system for an interventional device. The control system comprises a control handle that comprises a switching mechanism for toggling the transmission relationship between a knob and a drive shaft between relative rotation and concurrent rotation. This allows for easy switching between the clamping and separation processes through a simple switching action. The outer tube assembly, middle tube assembly, and inner tube assembly of the delivery system are designed as separate components that work in conjunction with each other, facilitating assembly, disassembly, cleaning, and replacement. The coordinated operation of the outer tube assembly and the middle tube assembly enables three-dimensional bending adjustment, facilitating path control within complex and curved cardiovascular passages. This design offers simple operation, high flexibility, and reduces the risk of trauma during surgical procedures.