Rotatable Medical Device Handle Assembly

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Solution Overview

Problem

There is a need for alternative medical devices and manufacturing methods for intracorporeal medical devices, such as guidewires and catheters, to improve their design, material, and usage efficiency.

Innovation Solution

The development of elongated medical devices featuring a tubular member with a lumen and a shaft, where an end effector is attached to the distal end and a handle assembly with a rotation mechanism is coupled to the proximal end, allowing for precise manipulation and positioning within the body lumen, with components designed for simplified manufacturing and reduced production costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If traditional manufacturing methods are used for intracorporeal medical devices, then device functionality is achieved, but manufacturing complexity and production costs increase

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoiddevice structure

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The device is divided into distinct modular components including a handle assembly, shaft, tubular member, and end effector. Each component can be manufactured separately using optimized processes and then assembled, reducing overall manufacturing complexity while maintaining device functionality.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The handle assembly incorporates multiple functional elements including rotation mechanisms, gripping members, and actuation controls that can accommodate different end effector types and configurations, reducing the need for multiple specialized device variants.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If precise manipulation and positioning capabilities are enhanced, then procedural accuracy improves, but device complexity increases

Engineering Contradiction:

Improvepositioning accuracyVSAvoidhandle assembly structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The shaft is disposed within the tubular member in a nested configuration, allowing the shaft to rotate and move independently while maintaining precise positioning control through the handle assembly's mechanical transmission system.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The handle assembly incorporates rotatable hub members and movable gripping members that dynamically adjust the device's orientation and position within the body lumen, enabling precise manipulation through mechanical motion transmission to the distal end effector.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS10390854B2Rotatable medical device

Publication Date: 2019.08.27 BOSTON SCIENTIFIC SCIMED INC

AI summary

Medical devices and methods for using medical devices are disclosed. An example medical device may include a tubular member having a lumen defined therein and a proximal end. A shaft may extend through the lumen. The shaft may have a distal end and a proximal end. An end effector may be attached to the distal end of the shaft. A handle may be coupled to the proximal end of the tubular member. The handle may include a base, a first hub member attached to the base, a second hub member coupled to the first hub member, and a cap attached to the second hub member.