Rotary Grinding Drive Sleeve With Auto-Locking Cooling Valve
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Solution Overview
Problem
Current rotational atherectomy devices face issues with manual operation of flushing fluid flow control, leading to potential temperature increases in blood and vascular tissue, which can cause blood cell aggregation and vascular dysfunction due to inadequate cooling measures.
Innovation Solution
A driving device with a communication valve made of a material with a heat deformation temperature range of 130° C. to 270° C., which locks the driving shaft when overheating to prevent rotation in the absence of cooling medium, ensuring continuous cooling even if manual operation fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation of flushing fluid flow control is used, then ease of operation is reduced, but device complexity is also reduced
Solution Approach 1:
The communication valve automatically controls the flushing fluid flow based on temperature conditions without requiring manual operation. When the driving shaft temperature exceeds the heat deformation temperature, the valve material deforms and automatically opens the flow channel to increase flushing fluid flow rate, providing self-regulating cooling control
Solution Approach 2:
The valve material's physical state changes in response to temperature parameter changes. The material transitions from a closed-state configuration at normal temperatures to an open-state configuration when temperature exceeds the heat deformation temperature, automatically adjusting the flow rate parameter of the flushing fluid
2Temperature
If flushing fluid flow rate is increased to prevent overheating, then cooling effect is improved, but risk of blood cell aggregation increases
Solution Approach 1:
The communication valve creates a feedback control system where the driving shaft temperature directly controls the flushing fluid flow rate. When temperature rises above the heat deformation temperature, the valve automatically opens to increase cooling; when temperature is controlled, the valve remains closed to maintain normal flow rates, preventing both overheating and excessive flow
Solution Approach 2:
The system dynamically adjusts the flushing fluid flow rate parameter based on temperature conditions. The valve material's phase or structural change at the heat deformation temperature triggers automatic flow rate optimization, ensuring cooling effectiveness while preventing blood cell aggregation from excessive flow
3Reliability
If manual confirmation of flushing fluid flow is required, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The communication valve system performs automatic verification of flushing fluid flow functionality through its temperature-responsive operation. During preoperative preparation, the system can be tested by applying heat to confirm valve opening and flow, eliminating the need for manual confirmation steps while maintaining reliability
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
Prevents vascular dysfunction by automatically stopping the driving shaft rotation when cooling fails, thereby preventing damage to blood vessels and ensuring safe surgical conditions.
Implementation Method 1
a communication valve (300), disposed in the accommodating cavity (101), wherein an input channel (301), and a cooling channel (302) passing through the communication valve (300) are formed in the communication valve (300)
Data Source
AI summary
A driving device and a rotary grinding apparatus, comprising: a mounting sleeve (100), an accommodating chamber (101) being axially formed in the mounting sleeve (100), and the two ends of the mounting sleeve (100) in the axial direction being respectively a driving end (110) and a connecting end (120); a driving shaft (200), passing through the accommodating chamber (101) in the axial direction and rotatable about the axis; and a communication valve (300), provided in the accommodating chamber (101), an input channel (301) and a cooling channel (302) penetrating through the communication valve (300) being formed inside the communication valve (300); one end of the input channel (301) being communicated with the cooling channel (302) and the other end being communicated with the outside to introduce a cooling medium; the cooling channel (302) being sleeved outside the driving shaft (200) in a clearance fit manner; and a first outlet (302a) and a second outlet (302b) being respectively formed on one side of the cooling channel (302) facing away from the driving end (110) and one side of the cooling channel (302) facing the driving end (110), and the first outlet (302a) being configured to output the cooling medium.