INVASIVE METHODS 1. Mechanical and chemical. 1. Rotary and elevator instruments. Are widely used in surgery and stomatology (scalpels, tweezers, peans). 2. Water scalpel. cut s tissues by narrow water torrent ( isotonic solution of NaCl) device consists of: pressure
1. Mechanical and chemical
1. Rotary and elevator instruments
Are widely used in surgery and stomatology (scalpels, tweezers, peans)
2. Water scalpel
Instruments used in stomatology
Are used for deep freezing of tissues (from 25°C to -190°C) – liquid N2 is used.If the cooling is slow , than water mole-cules change into the ice crystals and these may damage the cells during rewarming.
Advantage: anaesthetic effect of cold, small destructionof the tissue,no bleeding
Using: ophthalmology, gynecology, urology, oncology
High frequency focusing US
(1 – 3 MHz)
Low frequency US (20 – 50 kHz)
Ultrasound is produced bypiezo-
electric crystal and conducted by special wave- conducting system, that amlifies the amplitude by 10 times. US scalpel oscilates in re-sonance with transformer´s fre-quency. It is widely used in oto-laryngology and neurosurgery.
This device is utilised for extrac-tionof cloudy lense (cataract). Method is based on low frequency ultrasound application, which destructs the cloudy lense.Lense is then coagulated and sucked off.
3. Electrical Methods
extraction of cloudy lense
Electrotomy and electrocoagulation
1. Breathing support – artificial respiration
Special type: CPAP (continuous positive airway pressure)
Blood pump – elastic tube and rotor with 2 sheaves – they rotate, compress the tube and drive the blood before them Amount and pressure of blood is regulated by turning the pump rotation
Oxygenator– substitutes the lung function, blood is eliminated from from CO2 and is saturated by O2
Warmer device – modifies the temperature of oxygenated blood which returnes to the body to 37.5 °C
Enables to treat the intoxications or disorder affecting the function of kidney– filtration, resorbtion
Dialyser – is divided into 2 parts (blood part and dialy-sing part) bydialysing membrane.
Peritoneal dialysis– peritoneum works as a filter for hemo-perfusion, hemofiltration ( intoxication treatment and liver failure disorders)
Hemodialysis Peritoneal dialysis
are implanted because of eye injuries or the cataract
Composition of lens:
for deaf patients whose conduction of APsthrough the acoustic nerve retained intact
Drug(which dissolve the thrombus or prevents its formation) is applied into the blood by a pulse of compressed air
Automatic programmable insu-lin applicator device with auto-matic control of sugar level in blood
Nanotechnology in treatment of cancer