A surgical device for transanally accessing the rectum of a patient

Abstract

The present invention discloses a surgical device (1) for transanally accessing the rectum of a patient comprises a circular anal dilator (2) having a cylindrical ring wall (6) adapted to be transanally inserted into the rectum in order to provide a transanal access opening therethrough and a connecting portion (8) arranged at a proximal end of the ring wall (6) and adapted to hold the ring wall (6) inside the rectum, an anoscope (3) comprising a first retaining wall (13) defining at least partially a working channel (14) and a window aperture (15) providing an access area (16) to the surrounding tissue from inside the working channel (14), said anoscope (3) being received by the ring wall (6) of the anal dilator (2) and having a length such that it protrudes distally from the ring wall (6), a shield member (4) comprising a second retaining wall (26) which can be arranged in a manner to partially overlap the window aperture (15) of the anoscope (3) in order to vary the tissue access area (16) thereof.

Description

technical field [0001] The present invention relates generally to surgical instruments and methods for the transanal treatment of tissue lesions, such as rectal cancer, benign tumors, polyps, or isolated anal ulcers of the rectal mucosa, and more particularly to a surgical instrument and method that can be accessed transanally for use by means of an arcuate incision A stapler (so-called CCS) is a surgical device and method for performing transanal treatments such as superficial or total thickness resections of lesions at a target site remote from the anal verge of a patient. Background technique [0002] Known transanal access systems include circular anal dilators, obturators and anoscopes having smoothly tapered or arched ends to facilitate transanal delivery of circular anal dilators, such as is a so-called purse-string suture anoscope (PSA) that can be inserted into the rectum through a circular anal dilator. A purse-string suture anoscope (PSA) has the shape of a porti...

AI Technical Summary

Problems solved by technology

[0005] While this wide anoscope window is suitable for completely receiving the lesion to be treated, it does not prevent mucosal tissue from falling into the working channel of the anoscope, thereby obscuring visibility and working space

[0006] By utilizing known transanal access devices, visibility beyond 6 cm from the anal verge is significantly impaired, resulting in a restricted and altered view of the surgeon and a restricted working space, thereby increasing the risk of injury during the surgical procedure Risks to the rectal wall

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