Adjustable Smart Stylus With C-Shaped Handle for Stroke Hand Therapy

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing rehabilitation methods for stroke-induced paralysis, such as passive exercises and electrical stimulation, are inadequate for younger stroke patients, lacking adaptability and engagement, and existing styluses lack features like adjustable length, weights, and communication with therapeutic tablets for personalized therapy.

Innovation Solution

A smart stylus with a C-shaped handle, adjustable length, weight compartments, and a therapeutic tablet system that tracks progress and provides personalized therapy exercises via a touch screen, utilizing NFC and Wi-Fi for remote monitoring and tele-rehabilitation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional rehabilitation methods (passive exercises, electrical stimulation) are used, then therapy can be provided to stroke patients, but the methods lack adaptability and engagement for younger patients

Engineering Contradiction:

Improveadaptability to different patient groupsVSAvoidengagement and usability

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The stylus device incorporates adjustable length via sliding mechanisms and adjustable weight via removable weights, allowing the therapy system to adapt to different patient ages, hand sizes, and rehabilitation stages. This dynamic adjustability transforms a static traditional therapy approach into a customizable system that can engage both younger and older patients effectively.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If existing styluses are used without adjustable features, then the device structure is simple, but the device lacks customizable therapy capabilities

Engineering Contradiction:

Improvecustomizable therapy capabilitiesVSAvoiddevice structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The stylus is divided into modular components: an elongate body, a separate C-shaped handle, and removable weights. The sliding mechanisms allow sections to extend or retract independently. This segmentation enables customizable therapy capabilities while keeping each individual component relatively simple in structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The C-shaped handle is nested within or coupled to the elongate body, and weights are nested within compartments in the handle. This nesting approach allows multiple functional elements to be integrated into a compact form factor, adding complexity only where needed for functionality.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Productivity

If traditional rehab exercises are used, then basic therapy can be provided, but high repetition needed for neuroplasticity is difficult to achieve sustainably

Engineering Contradiction:

Improverehabilitation effectivenessVSAvoidtime for high repetition exercises

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The therapeutic tablet provides visual feedback through displayed exercises and tracks patient progress. This feedback mechanism makes high-repetition exercises more engaging and measurable, helping patients sustain the necessary repetition frequency for neuroplasticity without feeling like they are simply performing monotonous movements over extended periods.

Inventive Principle:

Principle #23Feedback

4Adaptability or versatility

If fixed-length stylus is used, then manufacturing is simple, but the stylus cannot accommodate different patient hand sizes and therapy stages

Engineering Contradiction:

Improveaccommodation of different hand sizesVSAvoidmanufacturing complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The stylus incorporates sliding mechanisms that allow the effective length to be adjusted by the user based on their hand size and therapy needs. This dynamic adjustment capability is achieved through relatively simple mechanical sliding components that can be manufactured using standard machining processes, avoiding the need for multiple fixed-length models.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20260023443A1Smart stylus therapeutic system and method of use

Publication Date: 2026.01.22 IMAM ABDULRAHMAN BIN FAISAL UNIV

AI summary

A smart stylus for use in hand therapy includes an elongate body having a stylus end, a central body, a C-shaped handle, and a handle end cap. The stylus end is connected to a first end of the central body and a second end of the central body is connected to a first end of the C-shaped handle. The central body is configured to taper in width and depth from the second end of the central body to the first end of the central body and the handle end cap is connected to a second end of the C-shaped handle. The length of the central body may be adjusted by sliding mechanisms. A pressure sensor measures the amount of force of the stylus tip on a therapeutic tablet. The therapeutic tablet presents therapy exercises and communicates therapy results to a physical therapist of the patient.