The linear snare applied under the
digestive endoscopy comprises a snare device and an operation
assembly, the snare device comprises a resin clamp, a spring, a connecting hole, a
metal wire and a baffle, the spring is installed on the resin clamp, the resin clamp is provided with the connecting hole used for fixing the
metal wire, and the baffle is arranged at the end of the resin clamp; the operation
assembly comprises a snare device base, a resin clamp operation rod, a resin clamp loosening rod, a resin clamp operation rod
handle and a
metal wire operation
handle. By means of the device, the defects of a traditional snare can be overcome, and when the resin clamp is fixed to the intestinal wall mucosa, the other movable end of the metal wire surrounds the bottom of the polyp through the metal wire operation
handle; after being tightened, the resin clamp and the metal wire connected with the resin clamp form a
closed loop, a polyp as large as possible or a polyp with an
asparagus position can be
cut off under an
endoscope under the electrified condition, the operation is convenient and fast, the operation efficiency is improved, and the
operation safety of a patient is also improved.