The first liver biopsy has been performed by Adolf Bingel in the year 1923. Since then, biopsy needles started to be fully developed and in the year 1938. Irving Silverman developed a bifid biopsy needle which is considered the "father" of all current tru-cut type biopsy needles. In 1958. Giorgio Menghini developed a vacuum assisted biopsy needle. Nowdays therapy choice is based according to biopsy results.
Semi-automatic tru-cut biopsy system with removable cannula
Cutting cannula needle tip. Semi-automatic tru-cut type system with removable cannula to perform multiple biopsies or to be used under TAC. The original releasing system allows to remove and connect the device to the removable cannula without performing any rotation. Two depth penetrations (10-20mm), stereotaxis spacer, extra trocar tip stylet and safety device. Depth marks on the cannula and depth stopper. Stylet connected to the system with notch to keep the specimen in, whistle and penetrating point. Special size 13G. Echogenic marker: inner
The procedure described is for guidance only. Each physician must, of course, evaluate the appropriateness of the procedure based on their clinical training and experience and the type of procedure to be performed. The needle must be used only once.
1. Charge Vantage GS biopsy needle by pulling back hard on the plunger until a firm click is felt
2. With stylet fully retracted insert needle proximal to area to be sampled. Be careful not to press plunger until needle is inserted to desider location.
3. Move plunger with thumb to first stop to advance the stylet and expose the specimen notch. Move the needle back and forth a few mm to fill the specimen notch. Press the plunger past stop with thumb, automatically triggering the canula to close, trapping a specimen in the sample notch.
4. Draw needle out. Pull back on prolunger to recock the spring. Push plunger to first stop exposing the specimen from notch. Remove tissue specimen from notch in stylet. Be careful not to push plunger past first stop during this step.