Arterial Compression Device with Ulnar Access Aperture
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing arterial compression devices obstruct access to the ulnar artery, making it difficult to assess radial artery patency and increasing the risk of radial artery occlusion following transradial catheterization.
Innovation Solution
An arterial compression device with a band and a movable compression portion that includes an aperture to permit access to the ulnar artery, allowing for selective compression and occlusion of the ulnar artery while applying pressure to the radial artery, facilitating improved assessment of radial artery patency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a compression device is applied around the wrist to compress the radial artery, then hemostasis is achieved, but access to the ulnar artery is obstructed making patency assessment difficult
Solution Approach 1:
The compression device is divided into distinct functional segments: a compression portion with pad and knob for radial artery compression, and an aperture region for ulnar artery access. This segmentation allows independent functionality of each component, enabling simultaneous compression of the radial artery while maintaining access to the ulnar artery for patency assessment.
Solution Approach 2:
The device applies localized compression only to the radial artery through the pad positioned at the compression portion, while the aperture provides a localized access region for the ulnar artery. This local quality approach ensures that compression forces are concentrated where needed (radial artery) while leaving the ulnar artery accessible for assessment.
2Reliability
If continuous compression is applied to the radial artery to maintain hemostasis, then bleeding is controlled, but radial artery occlusion may occur
Solution Approach 1:
The device enables feedback-based assessment of radial artery patency by allowing clinicians to manually compress the ulnar artery through the aperture and assess radial artery flow via pulse detection in the finger. This feedback mechanism allows adjustment of compression levels to maintain hemostasis while preserving adequate radial artery patency, preventing occlusion.
Solution Approach 2:
The compression portion features a movable pad that can be dynamically adjusted in position and compression force through the knob mechanism. This dynamic capability allows the device to adapt compression levels based on real-time assessment of hemostasis and artery patency, preventing excessive compression that could lead to occlusion while maintaining adequate compression for hemostasis.
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 better assessment of radial artery patency and reduces the occurrence of radial artery occlusion by allowing for the evaluation of blood flow through both arteries, improving the likelihood of achieving patent hemostasis.
Implementation Method 1
a compression portion that is moveable so as to selectively apply pressure to the radial artery of the subject
Data Source
AI summary
An arterial compression device having a band for securably fastening the arterial compression device around a wrist of a subject, a compression portion that is moveable so as to selectively apply pressure to the radial artery of the subject, and an aperture permitting access to the ulnar artery of the subject when the arterial compression device is securably fastened around the wrist of the subject.