An endoscope for deploying and withdrawing a tubular stent from a passage in a patient, comprising: a handle configured to be grasped by a user; a shaft extending distally relative to the handle; an outer sleeve extending distally from the shaft; an inner cannula configured to fit within the outer sleeve; a collar coupled with the outer sleeve and configured to move together therewith between a distal position in which distal ends of the inner cannula and the outer sleeve align and a proximal position by which a distal portion of the inner cannula protrudes distally from the outer sleeve; a tubular stent; said outer sleeve being configured to move relative to the handle and the inner cannula between a distal position and a proximal position; wherein when the outer sleeve is in its proximal position a distal portion of the inner cannula protrudes distally from the outer sleeve and when the outer sleeve is in its distal position the tubular stent fits in a tubular space between distal portions of the outer sleeve and the inner cannula; said tubular space is a tubular radial space and is configured to constrain the radially expandable tubular stent in a compressed state and said distal portion of the inner cannula is configured to engage the tubular stent to prevent proximal motion but allow distal motion of the tubular stent relative to the inner cannula, the tubular space matches the tubular stent in length such that when the outer sleeve is at its proximal position the tubular stent is not constrained by the outer sleeve and can expand radially to an expanded state and remain in said passage; and a camera module at the distal end of said inner cannula and a video screen attached to and mechanically supported by said handle and configured to show images of the passage and of the stent being deployed therein; mechanical and electrical connectors (420, 440) between said shaft and said handle, wherein the shaft, collar, outer sleeve and cannula form a single-use stent-deployment portion of the endoscope and the handle and video screen form a reusable portion, and said connectors configured to release by hand, without tools, for disposal of said single-use portion after use thereof in a patient procedure; further comprising a single-use stent removal portion that is configured to removably attach to said handle, in place of a stent deployment portion, and differs from a stent deployment portion by including plural hooks at a distal end of the inner cannula, which hooks are configured to fit between the inner cannula and the outer sleeve when the outer sleeve is in its distal position and to expand radially as the outer sleeve moves to its proximal position and to engage loops at a proximal portion of said tubular stent to be removed. a handle configured to be grasped by a user; a shaft extending distally relative to the handle; an outer sleeve extending distally from the shaft; an inner cannula configured to fit within the outer sleeve; a collar coupled with the outer sleeve and configured to move together therewith between a distal position in which distal ends of the inner cannula and the outer sleeve align and a proximal position by which a distal portion of the inner cannula protrudes distally from the outer sleeve; a tubular stent; said outer sleeve being configured to move relative to the handle and the inner cannula between a distal position and a proximal position; wherein when the outer sleeve is in its proximal position a distal portion of the inner cannula protrudes distally from the outer sleeve and when the outer sleeve is in its distal position the tubular stent fits in a tubular space between distal portions of the outer sleeve and the inner cannula; said tubular space is a tubular radial space and is configured to constrain the radially expandable tubular stent in a compressed state and said distal portion of the inner cannula is configured to engage the tubular stent to prevent proximal motion but allow distal motion of the tubular stent relative to the inner cannula, the tubular space matches the tubular stent in length such that when the outer sleeve is at its proximal position the tubular stent is not constrained by the outer sleeve and can expand radially to an expanded state and remain in said passage; and a camera module at the distal end of said inner cannula and a video screen attached to and mechanically supported by said handle and configured to show images of the passage and of the stent being deployed therein; mechanical and electrical connectors (420, 440) between said shaft and said handle, wherein the shaft, collar, outer sleeve and cannula form a single-use stent-deployment portion of the endoscope and the handle and video screen form a reusable portion, and said connectors configured to release by hand, without tools, for disposal of said single-use portion after use thereof in a patient procedure; further comprising a single-use stent removal portion that is configured to removably attach to said handle, in place of a stent deployment portion, and differs from a stent deployment portion by including plural hooks at a distal end of the inner cannula, which hooks are configured to fit between the inner cannula and the outer sleeve when the outer sleeve is in its distal position and to expand radially as the outer sleeve moves to its proximal position and to engage loops at a proximal portion of said tubular stent to be removed.