Endoscopic resection cap with built-in oscillating dissector

A medical device for facilitating a minimally invasive surgical procedure, comprising:

• a housing comprising a first cavity;
• an arm including at least one blunt tissue-dissecting surface and rotatably received within the first cavity, the arm comprising a first receiving slot and a second receiving slot;
• a first connecting member extending between a first distal end and a first proximal end of the first connecting member;
• and
• a second connecting member extending between a second distal end and a second proximal end of the second connecting member,
• wherein the first distal end of the first connecting member is slidably received within the first receiving slot, and the second distal end of the second connecting member is slidably received within the second receiving slot, and
• configured wherein manipulation of the first and second proximal ends causes the arm to rotate through at least an arc with respect to the housing,
• wherein manipulating the first connecting member rotates the arm in a first direction,
• wherein manipulating the second connecting member rotates the arm in a second direction,
• wherein the arm includes a non-circular aperture configured to reciprocate back and forth across a pin securing the arm into the first cavity,
• wherein the pin is fixed to the housing,
• wherein, in addition to the rotation in the first and second directions, the arm also includes a translational movement, and
• wherein the pin is disposed in the non-circular aperture to allow for each of the rotational and translational movements of the arm relative to the pin, such that the arm is configured to move across the pin according to the multiple allowed movements.

An endoscope comprising:

• an integrated distal tool end, or a removable tool end, configured for facilitating a minimally invasive surgical procedure, said tool end comprising:
• a housing comprising a first cavity;
• and
• an arm, including at least one tissue-dissecting surface, said arm movably received within the first cavity, wherein a distal end portion of the arm is configured to perform a first predetermined movement along at least a first plane at a predetermined frequency, corresponding to reciprocating movement of a proximal portion of the arm, wherein the arm is curved along a central proximal-distal longitudinal axis of the arm, and the arm includes a non-circular aperture configured to reciprocate back and forth across a pin securing the arm into the first cavity,
• wherein the pin is fixed to the housing,
• wherein the arm has a rotational movement and also a translational movement, and
• wherein the pin is disposed in the non-circular aperture to allow for each of the rotational and translational movements of the arm relative to the pin, such that the arm is configured to move across the pin according to the multiple allowed movements.