Dab tsi yog Qhov Kev Pov Tseg Trocar Teeb? Kev Tshawb Fawb Ua tiav ntawm Cov Qauv thiab Cov Cai Ua Haujlwm

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Nyob rau hauv lub tshav pob ntawm minimally invasive phais, "DLaparoscopic Troca yogposabler Teem" (feem ntau hu ua ib qho khoom siv pov tseg lossis chaw nres nkoj teeb) yog qhov khoom siv lub rooj vag tsis tseem ceeb hauv txhua txoj haujlwm laparoscopic. Nyob rau tib lub sijhawm, los ntawm kev sib khi valve, nws tuav cov khoom siv pneumoperitoneum (feem ntau ntawm CO₂ siab ntawm 12-15 mmHg), muab tus kws phais kom pom tseeb thiab nthuav dav kev ua haujlwm.

Cov txheej txheem pov tseg trocar feem ntau muaj peb lub hauv paus tseem ceeb: obturator (raug lub khob hliav qab / core), cannula (sheaath tube), thiab lub foob lub hau sib dhos (lub kaw lus kaw). Lub obturator tip tuaj nyob rau hauv ntse bladed, blunt conical, los yog bladeless dilating hom, siv rau pib nkag mus rau ntau yam khaubncaws sab nraud povtseg ntawm lub plab phab ntsa ntaub so ntswg. Lub cannula tseem nyob hauv lub cev raws li qhov ntsuas channel; nws cov phab ntsa sab nrauv feem ntau yog nruab nrog kauv los tiv thaiv -slip textures lossis barbs los txhim kho phab ntsa plab thiab tiv thaiv kev ua haujlwm tsis zoo. Lub foob lub kaus mom muaj cov roj- nruj valve (duckbill / flapper valve) thiab silicone dynamic sealing nplhaib, tso cai rau cov twj paj nruag ntawm cov kab sib txawv kom tau ntxig thiab tshem tawm yam tsis muaj kev cuam tshuam rau pneumoperitoneum. Qee qhov siab -kawg kawg kuj koom ua ke ib qho insufflation kais, uas tuaj yeem txuas ncaj qha mus rau lub insufflator los qhia lossis tso CO₂, thiab tuaj yeem tso pa ntau dhau los lossis dej.

Hais txog cov ntaub ntawv, siab -cov khoom siv pov tseg zoo trocar feem ntau siv kev kho mob- qib 304/316L stainless hlau rau cannula inner core lossis reinforcing rings, hos shells and sealing components are made from medical-grade polycarbonate (PC), ABS resin, nylon, and liquid silicone pat. Sab hauv ntawm lub cannula tau txais electropolishing kom ua tiav daim iav -zoo li smoothness (Ra <0.4 μm), zoo heev txo kev sib txhuam thaum lub sij hawm ntsuas ntsuas thiab tshem tawm. Lub pob tshab ntawm obturator feem ntau siv siab -transmittance engineering plastics xws li Makrolon 2458 lossis Lexan HP1, uas yog npuas -dawb thiab dab dej- cim- dawb, txhawb kev pom kev ua haujlwm.

Clinically, feem ntau siv diameters yog 5 hli (saib cov chaw nres nkoj thiab cov cuab yeej zoo ports), 10/11 mm (lub ntsiab lub koob yees duab channel), thiab 12 mm (loj staplers los yog specimen retrieval), nrog 15 mm siv nyob rau hauv ob peb txoj kev complex. Qhov ntev feem ntau yog nyob ntawm 75-150 mm thiab yuav tsum tau xaiv raws li tus neeg mob lub plab phab ntsa thickness (BMI). Kev tswj kev kam rau siab yog nruj, ncav cuag ± 0.01 hli, ua kom muaj kev sib raug zoo nrog ntau yam khoom siv laparoscopic txawv teb chaws.

Piv rau cov khoom siv hlau rov siv tau ib txwm muaj, cov khoom siv trocar pov tseg yog sterilized nrog ethylene oxide (EO) ntawm lub Hoobkas thiab npaj siv thaum qhib pob. Qhov no tshem tawm tag nrho cov kev pheej hmoo zais ntawm tus ntoo khaub lig- kis kab mob los ntawm kev ntxuav tsis txaus. Tsis tas li ntawd, txhua qhov puncture tip tuav zoo ib yam sharpness, thiab lub sealing rings khaws lawv elasticity raws li ib tug brand tshiab, zoo txo ​​qhov kev puas tsuaj ntawm lub cev los ntawm kev quab yuam ntau dhau mus rau ib tug dull ntsis. Yog li ntawd, kev sau npe khoom siv kho mob hauv tsev thiab thoob ntiaj teb Chav Kawm II thiab III tau suav nrog cov laparoscopic trocars pov tseg rau hauv cov txheej txheem tswj hwm ntawm YY / T 1710-2020 tus qauv txheej txheem.

Rau cov neeg ua haujlwm yuav khoom, cov tub ntxhais kawm kho mob, lossis cov neeg muag khoom uas tshiab rau cov cuab yeej phais mob tsawg kawg nkaus, nkag siab txog "trinity" qauv ntawm cov khoom siv pov tseg -obturator yog lub luag hauj lwm rau nkag mus, lub cannula nyob twj ywm kom lub qhov rooj qhib, thiab lub sealing valve tuav lub siab - yog qhov yuav tsum tau ua ntej rau kev xaiv thiab kev xaiv ntxiv. Cov kab lus tom ntej no yuav muab rau hauv - kev txhais lus tob los ntawm ntau qhov kev xav, suav nrog cov qauv kho mob, kev xaiv kev sib piv, cov txheej txheem tsim khoom, kev tswj tus nqi tiv thaiv kab mob, kev txheeb xyuas nyiaj txiag, thiab cov tiam tom ntej.