Ischemia,
the
inadequate
blood
flow,
can
arise
from
pre-existing
or
traumatic
events,
remain
an
undetectable
issue,
and
impact
body's
ability
to
provide
oxygen
necessary
limbs,
organs,
muscles,
tissue.
New
technology
involving
wearable
ultrasonic
devices
allows
medical
professionals
gain
real-time
insight
into
cardiovascular
system
of
their
patients.
A
non-invasive,
postage-stamp-sized
sensor
be
attached
a
patient,
allowing
for
continuous
monitoring
patient’s
pressure
outside
hospital.
After
reviewing
16
papers
on
sensors,
this
paper
intends
review
current
use
sensors
advantages
limitations
used
obtain
accurate
readings.
This
will
bring
attention
evolving
expanding
world
applications.
IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control,
Journal Year:
2023,
Volume and Issue:
71(7), P. 730 - 744
Published: Dec. 13, 2023
Wearable
ultrasound
has
the
potential
to
become
a
disruptive
technology
enabling
new
applications
not
only
in
traditional
clinical
settings,
but
also
settings
where
is
currently
used.
Understanding
basic
engineering
principles
and
limitations
of
wearable
critical
for
clinicians,
scientists,
engineers
advance
translate
from
bench
bedside.
devices,
especially
monitoring
have
apply
acoustic
energy
body
far
longer
durations
than
conventional
diagnostic
systems.
Thus,
bioeffects
associated
with
prolonged
exposure
as
well
skin
health
need
be
carefully
considered
devices.
This
article
reviews
emerging
applications,
safety
considerations,
future
research
directions
technology.
Sensors,
Journal Year:
2024,
Volume and Issue:
24(16), P. 5354 - 5354
Published: Aug. 19, 2024
The
practice
of
auscultation,
interpreting
body
sounds
to
assess
organ
health,
has
greatly
benefited
from
technological
advancements
in
sensing
and
electronics.
advent
portable
wearable
acoustic
devices
marks
a
significant
milestone
telemedicine,
home
clinical
diagnostics.
This
review
summarises
the
contemporary
devices,
categorized
based
on
varied
principles,
including
capacitive,
piezoelectric,
triboelectric
mechanisms.
Some
representative
are
introduced
perspective
portability
wearability.
Additionally,
characteristics
sound
signals
different
human
organs
practical
applications
exemplified.
Challenges
prospective
trends
sensors
also
discussed,
providing
insights
into
future
research
directions.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 15, 2025
Abstract
Traditional
wearable
ultrasound
devices
pose
challenges
concerning
the
rigidity
and
environmental
impact
of
lead-based
piezoelectric
materials.
This
study
proposes
a
novel
silicon
nanocolumn
capacitive
micromachined
ultrasonic
transducer
(snCMUT)
array
for
real-time
imaging
in
disposable
patches.
Using
lead-free
design,
snCMUT
incorporates
nanocolumns
to
address
existing
issues
achieves
high
transmission
efficiency
(220
kPa/V),
flexibility,
low
power
consumption.
The
unique
structure
enhances
displacement
efficiency,
enabling
high-resolution
while
maintaining
thin,
flexible
form
factor
(~
900
µm).
Phantom
demonstrates
its
superior
performance,
with
axial
lateral
resolutions
(0.52
0.55
mm)
depth
penetration
70
at
voltage
(8.9
VPP).
Upon
successful
application
monitor
both
sides
human
carotid
arteries,
offers
clear
images
continuous
blood
pressure
waveform
monitoring.
proposed
innovation
presents
significant
potential
medical
cardiovascular
health
assessment,
addressing
concerns
reducing
manufacturing
costs
(<$20).
ACS Sensors,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 25, 2025
Atherosclerosis
is
the
main
cause
of
ischemic
stroke.
It
occurs
as
a
condition
that
leads
to
thickening
arterial
blood
vessel
walls
and
narrowing
vessels,
which
can
seriously
affect
normal
flow
blood.
Currently,
detection
stenosis
relies
on
large-scale
hospital
equipment
like
computed
tomography
(CT)
magnetic
resonance
imaging
(MRI),
require
specialized
technicians
operate
are
not
convenient
for
daily
use.
In
addition,
affects
multiple
parameters
hemodynamics
in
field,
relying
single
physical
quantity
sufficient
understand
field
localized
stenotic
vessel.
Here,
we
demonstrated
combined
sensors
pulse
wave
velocity
(CSPB)
based
photoelectric
plethysmography
an
ultrasonic
Doppler
device.
We
found
when
rate
increased
by
30%,
amplitude
difference
curve
between
two
sides
over
11%,
decreased
8%,
resistance
11%.
also
prepared
silicone-based
models
vessels
build
vitro
systems
achieve
more
accurate
simulation
vascular
diseases.
Based
this,
studied
curves
CSPB
under
different
parameters.
Meanwhile,
used
finite
element
analysis
method
fluid-structure
interactions
study
changes
conditions.
This
expected
provide
theoretical
technical
references
achieving
noninvasive
cardiovascular
cerebrovascular
diseases
multisensor
fusion.
ABSTRACT
Wearable
devices
possess
excellent
flexibility
and
can
conform
to
irregular
surfaces,
extensively
changing
human
healthcare
fields.
Ultrasonic
technology,
with
its
extensive
penetration
depth,
nondestructive
nature,
versatile
functionalities,
has
been
widely
applied
in
the
diagnosis
treatment
of
various
diseases.
However,
traditional
ultrasound
are
often
bulky
rigid,
significantly
limiting
their
further
development
biomedical
field.
flexible
combine
advantages
wearable
electronics
providing
real‐time,
continuous,
strategies
for
applications.
seamlessly
skin
or
organ
substantially
enhancing
working
performance,
durability,
comfort.
Here,
we
review
recent
advancements
developing
applications,
including
materials,
structural
design,
applications
We
provide
an
overview
utilized
hemodynamics
monitoring,
deep‐tissue
energy
transmission,
closed‐loop
therapy.
Finally,
discuss
existing
challenges
future
trends
devices.
