Veress Needle Safety Mechanism: Core Design Logic Of Minimally Invasive Abdominal Access

https://en.wikipedia.org/wiki/Veress_needle

Nyob rau hauv lub tshav pob ntawm niaj hnub minimally invasive phais, lub plab kab noj hniav nkag mus rau hauv lub tsev yog lub ntsiab thiab tseem ceeb tshaj txuas ntawm laparoscopic kev khiav hauj lwm, thiab covVeress koobtau dhau los ua tus qauv ntsuas kub rau pneumoperitoneum creation vam khom rau nws cov qauv kev nyab xeeb tshwj xeeb. Tsis zoo li cov koob txhaj tshuaj zoo tib yam, tus nqi tseem ceeb ntawm Veress koob yog nyob rau hauv lub caij nplooj ntoos hlav ingenious -loaded dual- txheej txheej txheej txheem tsim, uas daws qhov ntev - sawv kev kho mob taw tes ntawm kev raug mob visceral thaum lub sij hawm lub plab phab ntsa puncture, thiab nteg ib lub hauv paus ruaj khov rau qhov nrov laib laum kev nyab xeeb.

Cov qauv sab hauv ntawm Veress rab koob muaj ob qhov tseem ceeb: ib qho kev ntse sab nraud thiab ib qho rov qab blunt puab stylet. Ob qho tib si tsim ib qho kev hloov pauv hloov ua haujlwm raws li cov ntaub so ntswg hloov pauv. Thaum rab koob nkag mus rau hauv cov ntaub so ntswg hauv plab nrog rau cov tawv nqaij, fascia thiab cov leeg nqaij, cov ntaub so ntswg uas muaj zog yuav ua rau cov khoom tsim - nyob rau lub caij nplooj ntoos hlav, retracting lub blunt puab stylet rau sab nrauv cannula. Lub sijhawm no, lub ntsej muag ntse sab nraud raug nthuav tawm, uas tuaj yeem ua tau zoo thiab ua haujlwm zoo los ntawm cov ntaub so ntswg hauv plab, ua kom pom tseeb sai thiab qis dua - tsis kam puncture thiab zam dhau kev puas tsuaj rau cov ntaub so ntswg.

Cov txheej txheem tiv thaiv kev nyab xeeb yog qhib tam sim ntawd lub sijhawm rab koob tawg los ntawm peritoneum thiab nkag mus rau hauv plab kab noj hniav. Lub plab kab noj hniav yog qhov qis - qhov chaw tsis kam hollow, thiab tam sim ntawd ploj mus ntawm cov ntaub so ntswg ua rau lub caij nplooj ntoos hlav compressed rebound tam sim ntawd. Lub blunt puab stylet pops rau pem hauv ntej thiab tag nrho cov ntse txheej cannula taub, tsim ib tug tag nrho blunt ua hauj lwm kawg. Qhov kev tsim qauv no tsim nyog zam qhov kev pheej hmoo ntawm cov hlab ntsha hauv plab, cov hlab ntsha thiab lwm yam tsis muaj zog hauv lub cev - lub plab zom mov tshwm sim los ntawm rab koob ntse ntse tuav lossis nce qhov muag tsis pom tom qab nkag mus rau hauv kab noj hniav.

Hauv kev ua haujlwm kho mob, cov kws phais mob tuaj yeem txiav txim siab lub xeev puncture los ntawm kev tawm tswv yim pom tseeb. Ob lub suab "nias" sib txawv thiab tactile bounces sib haum rau kev nkag mus ntawm fascia thiab peritoneum feem, uas pab cov neeg ua haujlwm paub qhov tob tob hauv lub sijhawm tiag tiag thiab tsis txhob siv ntau dhau. Qhov no humanized mechanical tawm tswv yim tsim txo qhov kev cia siab ntawm tus kws phais tus kheej kev paub thiab zoo heev txhim kho tus qauv thiab kev nyab xeeb ntawm kev ua haujlwm hauv plab plab.

Piv nrog rau qhov muag tsis pom trocar ncaj qha puncture thev naus laus zis, Veress koob lub tshuab tiv thaiv kev tiv thaiv kev nyab xeeb txo qhov tshwm sim ntawm kev raug mob visceral ntau dua 90%. Nws cov qauv tsim zoo kawg nkaus sib npaug ntawm kev ua haujlwm zoo thiab kev nyab xeeb ntawm kev ua haujlwm, uas yog vim li cas nws tau siv dav hauv gynecological, kev phais dav dav thiab phais urological laparoscopic rau ntau xyoo lawm. Nrog rau kev txhim kho txuas ntxiv ntawm cov tswv yim kev phais me me, qhov kev nyab xeeb ntawm Veress koob kuj tseem ua kom zoo dua qub, dhau los ua ib qho tseem ceeb ntawm kev ntsuas kev ntsuas rau kev ua haujlwm ntawm cov cuab yeej phais mob me me.