Tracheoscope Pull Wire Control Mechanism for Single-Handed Operation
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Solution Overview
Problem
Current tracheoscope control mechanisms require two-handed operation to position and adjust the bending angle of the catheter's far end, which is inconvenient for medical professionals who need to focus on observing and treating during procedures.
Innovation Solution
A tracheoscope pull wire control mechanism featuring a rotating wheel with a spring and brake block, allowing single-handed operation by moving a control piece to displace pull wires and fix the catheter's angle through a simple back-and-forth motion, enabling easy bending and positioning of the catheter's far end.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional two-handed control mechanism is used to position the catheter's far end, then the positioning accuracy is improved, but the ease of operation deteriorates
Solution Approach 1:
The control mechanism automatically locks the control piece at the pulled position through the elastic restoring force of the spring, eliminating the need for manual locking operations. The system serves itself by using the spring's elasticity to maintain positioning without additional user actions
Solution Approach 2:
The locking function is extracted from the manual operation and integrated into the spring mechanism itself. The spring's elastic force automatically provides the locking effect, removing the need for separate locking actions by the user
2Ease of operation
If a movable button control mechanism is used for single-handed operation, then the ease of operation is improved, but the reliability of positioning deteriorates
Solution Approach 1:
The spring automatically provides the locking function through its elastic restoring force, making the system self-servicing. When the control piece is released, the spring automatically returns it to the positioned state without requiring additional user actions, ensuring both ease of operation and positioning reliability
Solution Approach 2:
The spring provides continuous elastic feedback force that maintains the control piece in the positioned state. This elastic feedback ensures the positioning is maintained reliably without requiring constant user intervention or additional locking mechanisms
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
Enables single-handed control and stable positioning of the catheter's far end, reducing operator distraction and improving procedural efficiency by allowing easy adjustment and fixation of angles without additional locking actions.
Implementation Method 1
a spring (31) and a brake block (3) are arranged in the groove
Implementation Method 2
a brake block (3) and a spring (31) are arranged in the groove
Data Source
AI summary
A tracheoscope pull wire control mechanism includes a rotating wheel pivotally arranged inside a handle; a holding cavity is formed on an upper portion of the rotating wheel; a spring and a brake block are arranged in the groove, such that a connection rod of the control piece above the handle passes through a long slotted hole at a position opposite to the handle, and is clamped and linked with the brake block; and the near ends of the two pull wires are extended and are combined on the rotating wheel of the control mechanism. The positioning structure can be operated with a single hand, which is different from the conventional two-hand control manner; and the operation efficiency and the convenience are improved.