Radial Artery Sheath Retention via Inflatable Cuff and Ring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing artery sheath devices fail to securely retain a radial artery sheath during cardiac catheterization procedures, leading to potential dislodgment and bleeding complications, especially when multiple catheters are inserted or removed.
Innovation Solution
A wearable inflatable cuff with a removably attachable inflatable ring that secures the radial sheath in place, using a lock mechanism to ensure the sheath remains inserted and applies pressure to prevent bleeding upon removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radial artery sheath device is used during cardiac catheterization procedures, then the sheath can be inserted into the radial artery for catheter access, but the sheath may become dislodged or migrate from the incision site during multiple catheter insertions and removals
Solution Approach 1:
The device is divided into distinct functional segments: an inflatable cuff for securing the sheath at the incision site, an inflatable ring for retaining the sheath within the incision, and a lock mechanism for attachment. Each segment performs a specific function, allowing the sheath to be securely retained without requiring a monolithic complex structure.
Solution Approach 2:
The device uses inflatable elements that can be dynamically adjusted during the procedure. The cuff and ring can be inflated to different pressures as needed, providing adaptive retention force that responds to the procedural requirements while maintaining sheath position.
2Stability of the object's composition
If the radial sheath is secured tightly in place to prevent dislodgment, then sheath stability is improved, but removal of the sheath becomes difficult and may cause tissue damage
Solution Approach 1:
The inflatable cuff and ring provide dynamic retention that can be easily adjusted. During removal, the inflation pressure is simply reduced and the elements are deflated, allowing the sheath to be withdrawn smoothly without resistance or tissue damage. The same elements that provide strong retention during the procedure become compliant during removal.
Solution Approach 2:
The retention force is controlled by changing the inflation pressure parameter. High pressure provides strong retention during the procedure, while low pressure or deflation allows easy removal. This parameter change enables the device to transition between opposing states of strong retention and easy removal.
3Object-generated harmful factors
If compression is applied to the incision site to stop bleeding, then hemostasis is achieved, but the compression may interfere with catheter manipulation and sheath positioning
Solution Approach 1:
The compression function is segmented into a separate inflatable cuff that can be independently controlled from the sheath retention elements. This allows compression to be applied at the incision site for hemostasis while the sheath remains accessible through the ring for catheter manipulation, resolving the conflict between bleeding control and procedural access.
Solution Approach 2:
Compression is applied locally at the incision site through the cuff, while the sheath passage area through the ring remains open and accessible. This localized application of compression achieves hemostasis without interfering with catheter manipulation and sheath positioning during the procedure.
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 solution effectively secures the radial sheath during procedures, allowing for multiple catheter insertions and removals without dislodgment, while ensuring hemostasis by applying pressure to the incision site post-procedure.
Implementation Method 1
The cuff is inflatable to compress an incision in the patient's wrist to achieve homeostasis for stopping bleeding
Implementation Method 2
The ring is inflatable for compressing the radial sheath in the ring to inhibit the radial sheath from being removed from the incision
Data Source
AI summary
A radial artery sheath assembly includes a cuff that is wearable around a patient's wrist and a receiver is integrated into the cuff. The cuff is inflatable to compress an incision in the patient's wrist to achieve homeostasis for stopping bleeding. A ring is removably attachable to the cuff and a radial sheath is extendable through the ring to retain the radial sheath in the incision in the user's wrist when the ring is attached to the cuff. The ring is inflatable for compressing the radial sheath in the ring to inhibit the radial sheath from being removed from the incision. A lock is coupled to the ring and the lock releasably engages the receiver in the cuff for attaching the ring to the cuff.