Staged Deflation Syringe for Hemostasis Device Pressure Control
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Solution Overview
Problem
Current methods for achieving hemostasis at vascular puncture sites, particularly in arteries, are inefficient in controlling blood loss and hematoma formation due to the high pressure within arteries, leading to complications and prolonged procedure times.
Innovation Solution
A staged deflation syringe system comprising a barrel member and plunger member, designed to deflate inflatable hemostasis devices in controlled stages, allowing for precise management of pressure and volume of air or fluid removal to facilitate timely hemostasis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If rapid deflation of hemostasis device is used, then procedure time is reduced, but blood loss and hematoma formation increase due to high arterial pressure
Solution Approach 1:
The deflation process is segmented into multiple controlled stages rather than a single rapid deflation. The syringe system allows removal of air/fluid in incremental volumes (e.g., 10mL, 5mL, 2mL, 1mL stages), enabling the hemostasis device to maintain pressure control while gradually reducing inflation. This segmented approach resolves the contradiction by preventing sudden pressure drops that cause bleeding while still achieving timely hemostasis.
Solution Approach 2:
The syringe system provides dynamic control over the deflation rate and volume removal. The operator can adjust the deflation speed and volume based on real-time assessment of hemostasis quality and patient response. This dynamic adjustment capability allows optimization between procedure speed and bleeding control, resolving the fixed-tradeoff contradiction.
2Object-affected harmful factors
If high pressure is applied to arterial puncture site, then blood loss is controlled, but patient discomfort and procedure complexity increase
Solution Approach 1:
The staged deflation syringe system enables the operator to self-regulate pressure control based on visual and tactile feedback during the procedure. The system allows incremental adjustment of deflation volume, enabling real-time optimization of pressure control without requiring complex automated systems or additional devices. This self-service capability resolves the contradiction by providing effective blood loss control through simple, operator-controlled staged deflation.
3Device complexity
If single-stage deflation is used, then device simplicity is maintained, but hemostasis control precision is insufficient
Solution Approach 1:
The syringe is designed with segmentation features including volume markings and a plunger that can be stopped at intermediate positions. This allows the operator to divide the total deflation volume into controlled stages, achieving precise hemostasis control while maintaining the simplicity of a single syringe device. The segmented volume control resolves the contradiction between device simplicity and control precision.
Solution Approach 2:
The syringe system allows the operator to perform partial deflation actions in stages rather than complete deflation in one step. By removing air/fluid in partial volumes and assessing hemostasis quality between stages, the system achieves precise control without requiring complex multi-component devices. This partial action approach resolves the contradiction by enabling precision control through simple iterative partial deflation.
Data Source
AI summary
Devices used to deflate an inflatable hemostasis device are disclosed. The devices may be configured to deflate the inflatable hemostasis device in staged increments over a period of time. The devices may include a barrel member and a plunger member comprising an insert configured to couple with a retention ring of the barrel to restrict a retraction distance of the plunger member.