HARMONIC ACE+ Shears can be used for
coagulation and transection of vessels up
to 5 mm and handle multiple surgical jobs with precision including dissection, sealing, transection, and otomy creation. The refined blade design includes a tapered tip with a proprietary, nonstick coating.
What is harmonic shear?
The harmonic scalpel is
a surgical instrument used to simultaneously cut and cauterize tissue
. … Ultrasonic energy is famously used in Harmonic scalpel where ultrasonic energy is converted to mechanical energy at the active blade [1].
What is adaptive tissue technology?
Adaptive Tissue Technology –
Responds intelligently to varying tissue conditions by regulating energy delivery
and providing surgeons with enhanced audible feedback.
What is harmonic focus?
Aim: Harmonic Focus (HF) is
an ultrasonic device developed most recently for thyroid surgery
. … Results: When compared to conventional haemostasis, a reduction was observed in the duration of surgery in the HF group, and the amount of blood loss was reduced by 29%, and 46%, respectively.
How does harmonic scalpel work?
A harmonic scalpel
cuts via vibration
. The scalpel surface itself cuts through tissue by vibrating in the range of 55,500 Hz. The high frequency vibration of tissue molecules generates stress and friction in tissue, which generates heat and causes protein denaturation.
How does a harmonic work?
When a string is only lightly pressed by one finger (that is, isolating overtones of the open string), the resulting harmonics are called natural harmonics. … This technique, like natural harmonics, works
by canceling out the fundamental tone and one or more partial tones by deadening their modes of vibration
.
What is the difference between LigaSure and harmonic scalpel?
In contrast, the Harmonic scalpel uses ultrasound technology to denature proteins in vessel walls and tissues up to 5mm thick leading to coagulation [16]. Unlike the LigaSure,
the Harmonic scalpel is also able to cut through tissue as it coagulates
.
What is a LigaSure device?
LigaSure is
a bipolar clamping device used in open and laparoscopic surgeries for producing haemostasis in vascular pedicles up
to 7 mm in diameter (“Covidien LigaSure technology: consistent, reliable, trusted vessel sealing,” 2012). … LigaSure was used for securing haemostasis and tissue dissection.
What are the causes of harmonics?
What Causes Harmonics? Harmonics are created by
electronic equipment with nonlinear loads drawing in current in abrupt short pulses
. The short pulses cause distorted current waveforms, which in turn cause harmonic currents to flow back into other parts of the power system.
How much is harmonic scalpel?
| Study Intervention/comparator Primary analysis | Procedure costs (2016 USD) | Frazzetta et al18 UltraCision Harmonic Scalpel $1,517.18 | Ligatures and cauterization $2,059.93 | Hallgrimsson et al19 UltraCision Harmonic Scalpel $2,558.56 |
|---|
What type of energy does LigaSure use?
LigaSure vessel sealing technology works by applying a precise amount of
bipolar energy
and pressure to fuse the collagen and elastin in the vessel walls. It effectively seals vessels 1 to 7 mm in diameter with minimal sticking, charring, or thermal spread.
What is 1st 2nd and 3rd harmonics?
A Fundamental Waveform (or first harmonic) is the sinusoidal waveform that has the supply frequency. … So given a 50Hz fundamental waveform, this means a 2nd harmonic frequency would be 100Hz (2 x 50Hz),
a 3rd harmonic would be 150Hz (3 x 50Hz)
, a 5th at 250Hz, a 7th at 350Hz and so on.
Do all engines have a harmonic balancer?
The harmonic balancer is an
engine component found on virtually all rotating internal combustion engines
and plays an important role in protecting the engine from dangerous harmonic vibrations and potential damage.
What is the first harmonic?
The lowest possible frequency at which a string could vibrate to form a standing wave pattern
is known as the fundamental frequency or the first harmonic.
What is a harmonic instrument?
A harmonic is
a sound wave that has a frequency that is an integer multiple of a fundamental tone
. … This combination of harmonics is the very thing that creates the timbre of the instrument. One representative example of something that creates a pure sound, or only a fundamental tone with no harmonics, is a tuning fork.
