Assisted-free incision anal trocar
An anus and cannula technology, applied in trocars, surgical cutting instruments, medical science and other directions, can solve problems such as immaturity, and achieve the effects of fast postoperative recovery, saving hospitalization costs, and fast recovery.
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[0030] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.
[0031] see Figure 1~5 , The embodiment of the present invention is provided with an outer cannula 1, a guide tube 2, a back cover 3 and an instrument hole cover 4.
[0032] The tail end of the outer casing 1 has an external thread 11, the outer casing 1 is set outside the guide tube 2, the internal thread 31 provided on the back cover 3 is screwed with the external thread 11 provided at the tail end of the outer casing 1, and the guide tube 2 The front end is provided with a taper 21, and the rear end of the guide tube 2 is provided with a handle 22;
[0033] The overtube 1 is mainly used to expand the intestinal canal to take out specimens, to prevent mechanical damage, pollution, and tumor planting to the mucous membrane and muscles when taking out the specimens, and to facilitate the insertion of the staple holder during the operation.
[0034] ...
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