Curved Shaft Atrial Septum Perforation Device
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Solution Overview
Problem
Conventional atrial septum perforation devices lack a mechanism to directly visualize the state of the distal end portion inserted into the body, making it difficult for practitioners to accurately orient and maintain the perforation head during the procedure.
Innovation Solution
The atrial septum perforation device incorporates a shaft with a curved distal end and an operation handle featuring a rotational operation assisting surface. This design allows the practitioner to visually and tactilely confirm the orientation of the perforation head, ensuring it is directed towards the fossa ovalis by rotating the operation handle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional perforation device with a straight shaft is used, then the device structure is simple, but it is difficult to accurately orient and maintain the perforation head towards the fossa ovalis
Solution Approach 1:
The shaft is designed with a curved distal end portion instead of a straight configuration. This curvature allows the perforation head to be oriented towards the fossa ovalis when the operation handle is held in a natural position, improving orientation control without requiring complex adjustment mechanisms
Solution Approach 2:
The shaft curvature introduces a spatial dimension to the device design, transforming the orientation control problem from a rotational adjustment task into a geometric configuration solution. The curved shaft naturally directs the perforation head in the desired direction through its three-dimensional shape
2Loss of information
If the distal end portion of the perforation device is made straight, then manufacturing is simpler, but visual and tactile confirmation of perforation head orientation is not possible
Solution Approach 1:
The curved shape of the distal end portion serves as a tactile copy or indicator of the perforation head orientation. By feeling the curvature through the shaft, the practitioner can determine the orientation of the perforation head without direct visual observation, preserving orientation information feedback
Solution Approach 2:
The curved shaft configuration acts as a visual indicator, similar to how color changes provide information. The geometric shape itself communicates the orientation state of the perforation head to the practitioner through its form
3Measurement precision
If a rotational operation assisting surface is added to the operation handle, then orientation control is improved, but device complexity increases
Solution Approach 1:
The rotational operation assisting surface uses surface geometry and texture variations instead of complex mechanical indicators. The tactile and visual properties of the surface provide orientation information without requiring additional measurement components
Solution Approach 2:
The operation handle surface itself provides the orientation feedback function through its geometric design. The curved shaft and handle surface work together as an integrated system where the shaft curvature translates into handle surface orientation, eliminating the need for separate feedback mechanisms
Data Source
AI summary
An atrial septum perforation device including: at a distal end of a shaft, a perforation head part that performs perforation operation on a body tissue; and, at a proximal end of the shaft, an operation handle gripped by a practitioner. A distal end portion of the shaft is a shaft curved part that is curved in one direction. The operation handle includes a rotational operation assisting surface that extends vertically or horizontally when a direction of curving of the shaft curved part is set to a roughly 4 o'clock direction around a body axis parallel line of a patient so that the perforation head part is turned to a fossa ovalis.