Wearable Electrical Pulse Device for Lower Limb Ischemia
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Solution Overview
Problem
Conventional methods for alleviating lower limb ischemia are ineffective, risky, costly, and difficult to operate, with limited improvements in hemodynamic effects and potential serious complications.
Innovation Solution
A wearable device comprising a main control unit, electrocardiosignal monitoring unit, and electrical pulse assemblies with intermediate-frequency and low-frequency pulse stimulation electrodes, which intervene in blood vessel movement in the lower limbs through electronic pulses, reducing vascular impedance and improving blood flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If intermittent pneumatic compression (IPC) is used to improve lower limb blood flow, then blood flow improvement is achieved, but the device becomes large, heavy, expensive, and requires professional operation
Solution Approach 1:
The patent replaces the mechanical pneumatic compression system with an electrical pulse stimulation system. Instead of using airbags and high-pressure gas generation, the invention uses electrical pulses to directly stimulate blood vessels and surrounding tissues, achieving hemodynamic improvement without complex mechanical components. This substitution resolves the contradiction by maintaining therapeutic effectiveness while dramatically simplifying device structure and reducing size.
Solution Approach 2:
The patent extracts and removes the high-pressure gas generating components and airbag structures from the system. By eliminating these complex mechanical elements, the device becomes smaller, lighter, and easier to operate while still achieving the desired blood flow improvement through electrical stimulation alone.
2Speed
If high-pressure compression therapy is applied to improve blood perfusion, then blood flow improvement is achieved, but skin abrasions, contusions, and muscular soreness occur
Solution Approach 1:
The patent replaces mechanical high-pressure compression with electrical pulse stimulation. Instead of applying external mechanical force that can cause tissue damage, the invention uses electrical fields to stimulate blood vessels and surrounding tissues, achieving hemodynamic improvement without physical contact or pressure-related side effects.
Solution Approach 2:
The patent introduces electrical pulses as an intermediary mechanism between the device and the blood vessels. Rather than directly compressing tissues with mechanical force, the electrical pulses act as a mediator that stimulates the physiological response needed for improved blood flow, avoiding direct mechanical trauma to tissues.
3Force
If airbag structure tightly wrapping lower limbs is used for IPC, then compression effect is achieved, but infection risk increases in infected areas
Solution Approach 1:
The patent replaces the airbag compression mechanism with electrical pulse stimulation that does not require physical wrapping or contact with the skin. This eliminates the risk of trapping infections under compression while still achieving the desired therapeutic effect through non-contact electrical field application.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The wearable device effectively increases blood flow velocity and perfusion to distal lower limb areas, reducing risks and costs compared to conventional compression therapies, and can be operated without professional medical staff.
Implementation Method 1
an electrocardiosignal monitoring unit configured to be worn on a chest of a human body, and being in signal connection with the main control unit
Implementation Method 2
both the first electric pulse assembly and the second electric pulse assembly consist of intermediate-frequency pulse stimulation electrodes with a pulse frequency of 1-100 Kz and low-frequency pulse stimulation electrodes with a pulse frequency of 50-300 Hz
Data Source
AI summary
Disclosed in the present disclosure are a wearable device for alleviating lower limb ischemia, and a control method therefor. The device comprises a main control unit, an electrocardiosignal monitoring unit, a first electrical pulse assembly and a second electrical pulse assembly. The first electrical pulse assembly and the second electrical pulse assembly are each composed of an intermediate-frequency pulse stimulation electrode having a pulse frequency ranging from 1 Kz to 100 Kz and a low-frequency pulse stimulation electrode having a pulse frequency ranging from 50 Hz to 300 Hz. In the control method, a control algorithm is set on the basis of an electrocardiosignal, such that a first pulse assembly and a second pulse assembly output electronic pulses at specific modulation waves and according to a preset instruction, so as to generate a hammering effect, thereby achieving the effects of improving the blood flow velocity at the lower limbs.