Adjustable Radial Ulnar Compression Wristband
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Solution Overview
Problem
Current compression devices for achieving hemostasis after vascular procedures, such as radial artery catheterization, often fail to simultaneously and effectively compress both the radial and ulnar arteries, leading to potential bleeding complications, especially in patients on anti-coagulation medications or with hypertension.
Innovation Solution
An adjustable vascular compression wristband that applies independent and adjustable compression to both the radial and ulnar arteries using inflatable balloons and a securement system, allowing for controlled blood flow and venous return, while maintaining patency of the arteries to prevent chronic occlusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single compression device is used to compress the radial artery, then hemostasis at the radial puncture site is achieved, but the ulnar artery cannot be compressed simultaneously, leading to potential bleeding complications
Solution Approach 1:
The compression device is divided into two independent compression mechanisms: a radial compression member and an ulnar compression member. Each member can be independently inflated and deflated to compress its respective artery, allowing simultaneous compression of both radial and ulnar arteries without interfering with each other's function.
Solution Approach 2:
The device is designed to perform multiple functions: it can compress the radial artery for hemostasis, compress the ulnar artery for hemostasis or flow control, or compress both simultaneously. This multi-vessel compression capability makes the device universally applicable to various hemostasis scenarios involving either or both arteries.
2Reliability
If compression is applied to stop blood flow for hemostasis, then bleeding at the puncture site is controlled, but chronic occlusion of the artery may occur
Solution Approach 1:
The device employs dynamic compression control through inflatable balloons that can be inflated to apply compression for hemostasis and deflated to restore blood flow. The compression pressure and duration can be adjusted based on the patient's condition, allowing the operator to achieve effective bleeding control while minimizing the risk of chronic occlusion through controlled, temporary compression.
3Reliability
If manual compression is used, then hemostasis can be achieved, but the operator's hands remain occupied and cannot quickly remove the compression device
Solution Approach 1:
The device replaces manual mechanical compression with an automated inflatable balloon system. The balloons are inflated through a valve mechanism, eliminating the need for the operator to manually apply compression pressure. This mechanical substitution allows the operator's hands to be freed for other tasks while the device maintains compression through automated balloon inflation and deflation.
4Reliability
If compression is applied to both radial and ulnar arteries, then comprehensive hemostasis is achieved, but the device complexity increases
Solution Approach 1:
The device merges the radial and ulnar compression functions into a single integrated wristband structure. Both compression members are incorporated into one device that can be applied to the wrist, allowing simultaneous compression of both arteries through a unified design rather than requiring two separate devices or complex coordinated mechanisms.
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
The wristband enables effective hemostasis by allowing for precise control of blood flow and compression, reducing the risk of bleeding and chronic occlusion, and facilitating rapid application and removal, even in patients with complex medical conditions.
Implementation Method 1
inflatable balloons and a securement system, allowing for controlled blood flow
Data Source
AI summary
An adjustable radial and ulnar vascular compression wristband assists in achieving partial or full occlusion of a blood vessel when applied to a patient's wrist during or following a medical procedure. At least two adjustably inflatable non-adjacent balloons on the wristband apply preferential compression to portions of the circumference of the wrist, including in particular those portions overlying the ulnar and radial arteries.