最新Abstract Pikes - scalpels摘要派克-手术刀-PPT文档.ppt
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1、Insufflator,Insufflator,The electronic CO2 insufflator is used to achieve the necessary work space by distending the abdominal wall and depressing the hollow organs Because its automatic, the insufflating pressure can be preset The insufflator activates gas flow volumes can be set to values ranging
2、from 0-9.9 l/mm The important indicators of insufflators : preset pressure, actual pressure, flow rate and total gas used Quadromanometric parameters,Electrocautery,Electrocautery,this machine supports monopolar & bipolar cautery Also APC (argon plasma coagulator),Light source,Light source,The light
3、 source such as 250 watt halogen lamp has a condenser system But, the Xenon lamp (cold light source) gives better visual clarity The light intensity can be regulated manually or automatically High intensity Xenon lamp gives better visual and photographic clarity,Camera,Camera,2 types: single chip ,
4、3 chip High resolution, small & light weight, optimal sharpness, excellent color reproduction Single chip used for routine lap surgeries But for video reproduction, 3 chip is better Now, digital 3 chip cameras are also available,Harmonic scalpel,Harmonic scalpel,Harmonic probe,Harmonic scalpel,The b
5、asic mechanism is by tamponading & coapting with a denatured protein coagulum Mechanical energy at 55,500 vibrations/sec Disrupts hydrogen bonds & forms a coagulum Temperature created is only 80-100 C, compared to electrocautery 200-300 C which also causes collateral damage & tissue necrosis No char
6、ring or melting of tissues The fastest sealing instrument,Ligasure,Ligasure,Vessel sealing system Unique combination of pressure & energy to create vessel fusion by melting the collagen & elastin in the walls reforming into a permanent, plastic like seal This seal can withstand 3 times normal systol
7、ic blood pressure Least lateral thermal damage 1mm The slowest sealing instrument,Enseal,Enseal,Adjusts energy through each tissue bundle This electrode consists of millions of nanometer sized conductive particles embedded in a temperature-sensitive material Each of these particles acts like a discr
8、ete thermostatic switch to regulate the amount of current The vessel walls are fused through compression, protein denaturation & then renaturation,Sterrad,Sterrad,Uses hydrogen peroxide vapor & low temperature gas plasma to sterilize most devices quickly with no toxic residues Takes about 75 mins fo
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