Duodenal papilla incision knife

Abstract

The invention discloses a duodenal papilla incision knife. A knife body is shaped like a long and thin strip, can freely penetrate through a biopsy hole of a gastroscope and is provided with a hollow wire penetrating channel, and one steel wire can be inserted into the wire penetrating channel; the front end of the knife body is provided with a section of a knife head, the front section of the steel wire penetrates out of the wire penetrating channel and then is embedded in the knife head, the knife head is supported at the front end of the knife body through the front section of the steel wire, and the steel wire can rotate to drive the knife head to rotate; the tail end of the knife head is provided with a wire pulling guide seat, and the wire pulling guide seat is provided with a wire feeding hole; the knife body is further provided with a thin metal wire in an embedded mode, the front section of the thin metal wire penetrates out of the front end of the knife body and then penetrates into the wire feeding hole, and the head end of the front section of the thin metal wire is embedded into the front end of the knife head. The duodenal papilla incision knife has the advantages of being novel in structure, more flexible in operation, higher in practicability and more ideal in clinical application effect.

Description

technical field [0001] The invention belongs to the field of medical equipment and relates to a duodenum nipple incision knife. Background technique [0002] Duodenal papillary incision is suitable for patients who need to undergo duodenal papillary myotomy for choledocholithiasis and other diseases. The end is inserted into the patient's duodenum through the biopsy channel of the endoscope such as the duodenoscope, and then the metal filament built in the incision knife is pulled back on the end of the incision head and tail to make the incision knife The shape of the head end forms a sickle-shaped knife head, and the sickle-shaped knife head can cut the duodenal papillary muscle, which is convenient for the next procedure such as biliary stone removal, but this operation method is not effective in actual clinical practice. There is a problem that the direction of the slender incision knife head does not correspond to the patient's duodenal papilla after entering the patie...

AI Technical Summary

Problems solved by technology

[0002] Duodenal papillary incision is suitable for patients who need to undergo duodenal papillary myotomy for choledocholithiasis and other diseases. The end is inserted into the patient's duodenum through the biopsy channel of the endoscope such as the duodenoscope, and then the metal filament built in the incision knife is pulled back on the end of the incision head and tail to make the incision knife The shape of the head end forms a sickle-shaped knife head, and the sickle-shaped knife head can cut the duodenal papillary muscle, which is convenient for the next procedure such as biliary stone removal, but this operation method is not effective in actual clinical practice. There is a problem that the direction of the slender incision knife head does not correspond to the patient's duodenal papilla after entering the patient's duodenal papilla. The best direction for duodenal papillary bile duct incision is at 10-12 o'clock, which needs to be adjusted repeatedly by the doctor to solve the problem.

Images