Hemostat Delivery Device Constant Pressure Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current hemostat delivery systems using pressurized gas cartridges face issues with initial high pressure causing 'white-out' conditions and inconsistent delivery due to fluctuating pressure, leading to powder dispersal in unintended areas and loss of visibility during surgical procedures.
Innovation Solution
A hemostat delivery system with a constant or near-constant pressure mechanism, utilizing a spring-loaded diaphragm and adjustable screw to maintain consistent outflow, ensuring predictable and controlled delivery of clotting agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pressurized gas cartridges are used to deliver hemostat powder, then delivery speed and productivity are improved, but initial high pressure causes white-out conditions and powder dispersal to unintended areas
Solution Approach 1:
The patent applies parameter changes by transitioning from high initial pressure to a regulated, reduced pressure level. The pressure control valve actively modulates the pressure parameter of the propellant gas, maintaining it within an optimal range that enables effective powder delivery without causing white-out conditions or unintended dispersal. This dynamic parameter adjustment resolves the contradiction between delivery speed and harmful effects.
Solution Approach 2:
The pressure control valve incorporates feedback mechanisms to continuously monitor and adjust propellant pressure. By sensing pressure variations and responding with appropriate valve adjustments, the system maintains pressure within the optimal range, preventing both insufficient delivery and excessive pressure effects. This closed-loop control resolves the contradiction by adapting pressure in real-time to maintain effective delivery without harmful side effects.
2Power
If pressurized gas cartridges are used, then delivery power is improved, but pressure fluctuates over time causing inconsistent delivery performance
Solution Approach 1:
The pressure control valve uses feedback control to continuously monitor propellant pressure and adjust valve opening accordingly. As propellant depletes and pressure naturally declines, the feedback mechanism compensates by adjusting valve parameters to maintain consistent output pressure, ensuring stable delivery performance throughout the entire propellant duration.
Solution Approach 2:
The system transitions from static pressure delivery to dynamic pressure control. The pressure control valve actively adjusts its opening and flow characteristics in real-time to compensate for changing propellant conditions, maintaining consistent delivery power despite the natural pressure decline associated with propellant consumption.
3Object-affected harmful factors
If pressure limiting valves are used to reduce initial pressure, then white-out conditions are reduced, but delivery pressure still diminishes over time affecting user experience
Solution Approach 1:
The pressure control valve employs feedback control to actively maintain pressure within an optimal range throughout propellant duration. Unlike simple pressure limiting valves that only reduce initial pressure, the feedback-controlled valve continuously adjusts to compensate for pressure decline, maintaining consistent delivery pressure while preventing white-out conditions throughout the entire operation.
Solution Approach 2:
The system dynamically adjusts pressure parameters over time rather than using a fixed pressure limit. The pressure control valve modulates pressure within an optimal range, adapting to changing propellant conditions to maintain consistent delivery performance while preventing harmful effects throughout the entire propellant duration.
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 system provides a cost-effective, user-friendly experience by maintaining consistent pressure, reducing powder dispersal and attachment to unintended areas, thereby improving visibility and control during surgical procedures.
Implementation Method 1
a constant pressure device, such as a spring-activated diaphragm with an optional adjustment screw
Implementation Method 2
an actuator for selectively allowing propellent to flow into the passageway
Data Source
AI summary
A clotting agent delivery system comprises a frame, a passageway extending along the frame, a discharge opening connected to the passageway, a clotting agent reservoir fluidly connected to the passageway to hold a clotting agent substance, a valve in the passageway to control flow of the substance through the passageway, and an actuator to allow propellent to flow into the passageway, wherein the valve and clotting agent reservoir cooperate to provide clotting agent substance to the discharge opening at constant pressure using the propellant. A method for delivering a clotting agent comprises inserting a delivery catheter into an anatomic area, coupling a clotting agent delivery system to the delivery catheter, the clotting agent delivery system having a reservoir of a clotting agent, operating a valve to release propellant for propelling the clotting agent, and conveying the propellant and the clotting agent to the delivery catheter at a constant pressure.