Hemostasis Valve Control via Sensor Feedback
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Solution Overview
Problem
Current catheter systems for percutaneous coronary intervention procedures face challenges in controlling hemostasis valves effectively, particularly in managing blood flow and frictional forces during robotic catheter operations, which can lead to inefficiencies and potential tissue damage.
Innovation Solution
A robotic catheter system with a hemostasis valve control mechanism that includes a sensor to detect blood flow and frictional forces, coupled with a controller to automatically adjust the valve's operation, ensuring precise control and minimization of blood loss and tissue damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual control of hemostasis valve is used in robotic catheter system, then device complexity is reduced, but control precision and automation level are insufficient leading to potential tissue damage and blood loss
Solution Approach 1:
The system incorporates sensors that detect blood flow and frictional forces, providing real-time feedback to the controller. The controller adjusts the engagement member position based on this feedback to automatically control the hemostasis valve, achieving precise automated control while managing complexity through intelligent control algorithms
Solution Approach 2:
The system enables self-controlled valve operation where the controller automatically adjusts the engagement member based on sensor inputs. The hemostasis valve control becomes autonomous, with the system monitoring and adjusting itself without continuous manual intervention, thereby increasing automation while containing complexity through self-regulating mechanisms
2Measurement precision
If automated control with sensor feedback is implemented, then control precision is improved, but device complexity increases
Solution Approach 1:
Sensors detect blood flow and frictional forces, providing precise real-time data to the controller. This feedback mechanism enables the controller to make precise adjustments to the engagement member position, achieving high control precision through automated regulation based on actual physiological conditions
Solution Approach 2:
The system replaces manual mechanical control with an automated electro-mechanical control system. The controller uses electronic signals to adjust the engagement member based on sensor inputs, substituting manual operation with automated electronic control mechanisms that provide more precise and consistent valve control
3Productivity
If manual valve operation is used, then ease of operation is maintained, but productivity decreases due to inefficiencies in managing blood flow and frictional forces
Solution Approach 1:
The system performs self-controlled valve management where the controller automatically adjusts the hemostasis valve based on sensor feedback. This eliminates the need for continuous manual manipulation, allowing the system to efficiently manage blood flow and frictional forces autonomously, thereby increasing procedure efficiency while reducing the operational burden on the user
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 enables precise and automated control of hemostasis valves, enhancing the efficiency of catheter procedures by reducing blood loss and minimizing tissue damage, thereby improving the safety and effectiveness of interventions.
Implementation Method 1
a sensor configured to detect blood flow and a controller coupled to the sensor and the engagement member, the controller configured to control the engagement member to operate the at least one valve based on the blood flow detected by the sensor
Implementation Method 2
a sensor configured to detect a frictional force required to move an elongated medical device and a controller coupled to the sensor and the engagement member, the controller configured to control the engagement member to operate the at least one valve based on the detected frictional force
Data Source
AI summary
A system for controlling a hemostasis valve comprising a body portion having a proximal end, a distal end and a lumen extending between the proximal end and the distal end, at least one valve positioned in the proximal end of the body portion, and an engagement member operatively coupled to the at least one valve, where the body portion is configured to pivot from a raised position to an-in use position. The system includes a drive member configured to couple to the engagement member as the body portion of the hemostasis valve pivots to the in-use position and to uncouple from the engagement member as the hemostasis valve pivots to the raised position, and a controller coupled to the drive member, the controller configured to control the drive member to impart movement to the engagement member to open and close the at least one valve.