METHOD FOR TREPAN-BIOPSY OF TUMOURS OF THE PANCREATIC HEAD AND DISTAL CHOLEDOCHUS AND DEVICE FOR IMPLEMENTATION THEREOF Russian patent published in 2020 - IPC A61B17/00 A61B10/00 

FIELD: medicine.

SUBSTANCE: invention refers to surgery, namely to oncology and oncoradiology, and can be used for trepan-biopsy of pancreatic head and distal choledochal tumours. It is followed by transhepatic puncture access to bile ducts with tissue sampling for histological examination from different places, performed under X-ray control to perform cholangiography. Metal conductor is delivered through the tumour stenosis along the true choledochal lumen. Material is sampled with a single-stage bougienage of the transhepatic puncture canal and the tumour occlusion zone. Device for trepan-biopsy of head and pancreatic head tumours and a distal portion of a common bile duct includes a plastic polymer tube, a Luer/Luer Lock syringe connector and a radiopaque label. Device has two working channels for a puncture needle and a metal guide, the proximal ends of which are rigidly fixed relative to each other at angle of 20–40°, a distal end in the form of a truncated cone, a projection in the distal portion of the puncture canal, providing angle of 5–30° between axis of inner end of puncture needle and axis of metal conductor, and radiopaque label located near inner hole of puncture canal.

EFFECT: disclosed method and device enable to obtain material for histological examination only under X-ray control with 100 % information value with simplicity of intervention.

2 cl, 2 dwg