Medical Device Loop Structure With Angled Through-Hole Joining

Solution Overview

Problem

The strength of the loop portion in medical devices is inadequate.

Innovation Solution

A method for manufacturing a medical device involves forming a through-hole in a flat portion of a workpiece and joining an entry member with an elongated body such that the through-hole is oriented in a predetermined direction intersecting the axial direction, enhancing the stability and strength of the loop portion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the loop portion is formed by folding back an elongated member, then the manufacturing process is simple, but the strength of the loop portion is inadequate

Engineering Contradiction:

Improvestrength of loop portionVSAvoidcomplexity of manufacturing process

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The workpiece is divided into a flat portion and a base portion, with the flat portion being folded back to form the loop portion. This segmentation allows the loop to be formed from a specific section while maintaining the structural integrity of the entire fastening member.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The flat portion is folded back and inserted into a through-hole formed in the base portion, creating a nested structure where the loop portion is housed within the base. This nesting provides structural support and significantly enhances the strength of the loop portion.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Stability of the object's composition

If the loop portion is formed by folding back an elongated member, then the manufacturing process is simple, but the structural stability of the loop portion is insufficient

Engineering Contradiction:

Improvestructural stability of loop portionVSAvoidcomplexity of manufacturing process

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The workpiece is divided into a flat portion and a base portion, with the flat portion being folded back to form the loop portion. This segmentation allows the loop to be formed from a specific section while maintaining the structural integrity of the entire fastening member.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The flat portion is folded back and inserted into a through-hole formed in the base portion, creating a nested structure where the loop portion is housed within the base. This nesting provides structural support and significantly enhances the stability of the loop portion.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Strength

If the through-hole is oriented in a direction parallel to the axial direction of the elongated body, then the manufacturing is easier, but the strength and stability of the loop portion are reduced

Engineering Contradiction:

Improvestrength of loop portionVSAvoidorientation precision of through-hole

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

The through-hole is oriented in an asymmetric direction relative to the axial direction of the elongated body, specifically in a direction that is not parallel to the axial direction. This asymmetric orientation optimizes the structural strength and stability of the loop portion when inserted into the base.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The through-hole orientation is changed from a one-dimensional parallel alignment to a multi-dimensional angled orientation. This dimensional change allows the loop portion to be inserted at an optimized angle that enhances both strength and stability while remaining manufacturable.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS20260077166A1Method for manufacturing medical device and medical device

Publication Date: 2026.03.19 ASAHI INTECC CO LTD

AI summary

A method for manufacturing a medical device includes: manufacturing an entry member entering a lesion by forming a through-hole in a flat portion of a workpiece having the flat portion, the entry member having a loop portion surrounding the through-hole; and joining the entry member and an elongated body to each other in such a way that the through-hole is oriented in a predetermined direction intersecting an axial direction of the elongated body.