Multipurpose Handle Locking for Single-Handed Device Control
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Solution Overview
Problem
Conventional medical device delivery systems require two-handed operation, making it difficult for users to control relative motion of various structures during deployment and retrieval, especially when monitoring surgical conditions, and lack ergonomic handles for easy operation.
Innovation Solution
A multipurpose handle with an elongate body, actuation button, and locking mechanism that allows single-handed control over longitudinal and rotational movements of medical devices, featuring a cutout for the actuation button and a locking member that restricts movement in a locked position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two-handed operation is used to control relative motion of delivery system structures, then control precision is improved, but ease of operation deteriorates due to difficulty in monitoring surgical conditions simultaneously
Solution Approach 1:
The handle is divided into functionally independent zones: a first portion for controlling longitudinal movement of the inner shaft and a second portion for controlling rotational movement. This segmentation allows the user to independently control different degrees of freedom with one hand, resolving the contradiction between control precision and ease of operation.
Solution Approach 2:
The handle integrates multiple control functions into a single ergonomic structure that can perform both longitudinal and rotational control operations. The first and second portions work together to provide comprehensive control capability, eliminating the need for two-handed operation while maintaining precise control over the medical device.
2Ease of operation
If single-handed operation is implemented, then ease of operation is improved, but control precision deteriorates due to difficulty in controlling multiple structures simultaneously
Solution Approach 1:
The handle is segmented into distinct control zones with the first portion dedicated to longitudinal movement control and the second portion dedicated to rotational movement control. This functional segmentation enables a single hand to precisely control multiple degrees of freedom independently, resolving the contradiction between ease of operation and control precision.
Solution Approach 2:
The control mechanism transitions from two-dimensional planar control to three-dimensional spatial control by adding the rotational degree of freedom controlled by the second portion. This dimensional expansion allows comprehensive control of the medical device from a single ergonomic handle position.
3Ease of operation
If integrated handle design is used, then ease of operation is improved through ergonomic design, but device complexity increases due to multiple control mechanisms
Solution Approach 1:
The handle merges multiple control mechanisms into a single integrated structure. The first portion for longitudinal control and the second portion for rotational control are combined in one ergonomic handle body, reducing the number of separate components and simplifying the overall system while maintaining multiple control functions.
Solution Approach 2:
The integrated handle serves multiple control functions simultaneously through its different portions. This multi-functionality reduces the need for separate control devices and simplifies the user interface, resolving the contradiction between ease of operation and device complexity.
Data Source
AI summary
A multipurpose handle incorporated into a medical device delivery system. The multipurpose handle includes an elongate handle body, an actuation button, and a locking member. The elongate handle body has a proximal end extending to a distal end, which defines a longitudinal axis. The elongate body further includes a cutout that creates a movement space therein in which the actuation button is disposed and is connected to a medical device. The actuation button is movable within the cutout along the longitudinal axis and rotatable within the cutout. The locking member is connected to the elongate handle body and movable between a locked position and unlocked position. The locking member may be in contact with the actuation button and be configured to restrict the movement of the actuation button along the longitudinal axis when in the locked position.