Smart Clothing That Compares Pulse Signals from Both Sides of Your Body

This patent describes a piece of clothing, like a t-shirt, with built-in sensors in its sleeves or legs to measure and compare pulse characteristics from different limbs, helping to detect subtle health differences.

What it covers

This patent describes an apparatus for monitoring a person's pulse using smart clothing. The clothing, such as a t-shirt, has sleeves with 'stretchable necks' (claim 1) or 'resilient necks' (claim 2) that hug the wearer's limbs. These necks contain sensors like electrocardiogram (ECG) electrodes (claim 1), photoplethysmogram (PPG) sensors (claim 2), or ballistocardiogram (BCG) sensors (claim 5). The clothing is designed to keep these sensors in firm contact with the skin. A key aspect is the ability to obtain a 'left pulse' and a 'right pulse' from the same heartbeat (claim 9) and then observe differences in characteristics like 'pulse-transit-time', 'spread', 'trough to peak amplitude', or 'shape' between the two sides. For example, a smart t-shirt could measure the pulse in both wrists simultaneously and a tiny computer inside the shirt would compare how quickly the pulse wave reaches each wrist.

What it doesn't cover

• —Does not cover pulse monitoring devices that only measure pulse from a single limb without comparing it to another limb (claims 1, 3, 9 emphasize 'two sleeves' or 'left pulse' and 'right pulse').
• —Does not cover sensors that are not integrated into the 'neck' of a sleeve or leg opening (claims 1, 2).
• —Does not cover pulse monitoring without specifically comparing characteristics like pulse-transit-time, spread, amplitude, or shape between the left and right limbs (claim 9).
• —Does not cover devices where the electrodes or sensors are not actively urged into contact with the skin by a 'stretchable' or 'resilient' part of the clothing (claims 1, 2).

The clever bit

The novelty lies in integrating multiple types of pulse sensors (ECG, PPG, BCG) into the sleeves or leg openings of a piece of clothing, specifically designed to compare pulse characteristics between opposite limbs from the same heartbeat. This allows for detecting subtle asymmetries in blood flow that might indicate underlying health conditions.

Why it matters

Comparing pulse characteristics between left and right limbs can reveal early signs of cardiovascular issues or other health problems that might affect blood flow unevenly. This approach could offer continuous, non-intrusive monitoring, potentially aiding in early detection of conditions like peripheral artery disease or even stroke risk. It moves beyond simple heart rate tracking to more nuanced physiological insights.

Real-world examples

• 1.Smart t-shirts for continuous health monitoring
• 2.Compression sleeves with integrated biometric sensors
• 3.Smart socks for bilateral leg pulse analysis
• 4.Wearable health trackers that provide comparative limb data