Catheter Kit Restriction Portion Calibration
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Solution Overview
Problem
Existing medical devices face challenges in easily attaching and detaching a catheter unit with a deformable portion to a base unit, due to misalignment of the wire and coupling portion when the catheter unit is bent.
Innovation Solution
A catheter kit is provided, which includes a catheter unit with a linear member, a frame, a bendable portion, and an intermediate portion, along with a catheter case containing a restriction portion to calibrate the coupled state between the linear member and the driving source of the base unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the catheter unit is made bendable to improve flexibility and adaptability, then the catheter can navigate complex anatomical paths, but alignment between the wire and coupling portion becomes difficult when attaching to the base unit
Solution Approach 1:
The catheter unit is pre-configured with a wire extending from the bendable portion toward the coupling portion, and the coupling portion is pre-positioned at the proximal end. This preliminary arrangement ensures that even when the catheter is bent, the wire and coupling portion maintain their relative positions and can be easily aligned with the base unit's coupling mechanism during attachment.
2Reliability
If the wire and coupling portion are configured to overlap in the cross-sectional direction to ensure reliable coupling, then connection strength is improved, but the device complexity increases
Solution Approach 1:
The wire and coupling portion are merged into an integrated structure where the wire extends directly from the bendable portion to the coupling portion location, and the coupling portion is formed as an integral part of the catheter unit's proximal end. This merging eliminates the need for separate alignment mechanisms while maintaining reliable coupling through the overlapping configuration.
Data Source
AI summary
A catheter kit includes a catheter unit and a catheter case. The catheter unit includes a linear member, a frame guiding the linear member, a first bendable portion that bends when a first linear member of the linear member is driven, and an intermediate portion that supports between the first bendable portion and the frame. An accommodation space that accommodates the catheter unit is provided in the catheter case. A restriction portion is provided in the accommodation space, the restriction portion is used to, when the catheter unit and a base unit including a driving source that drives the linear member are coupled to each other, calibrate a coupled state between the linear member and the driving source.