Abstract: A medical device is provided comprising a first port; a second port in fluid communication with the first port; and a third port in selective fluid communication with both the first port and the second port; a sealing membrane disposed between the third port and both the first port and the second port, the sealing membrane is configured to move between a first position preventing fluid communication between the third port and both the first port and the second port and a second position allowing fluid communication between the third port and the first port, wherein movement of a fluid supplied to the medical device at the third port moves the sealing membrane from the first position to the second position.

Abstract: An endoscope sheath is provided comprising a sheath tube extending along a longitudinal axis between a proximal end and a distal end, the sheath tube is configured to receive at least a portion of an endoscope; a hub connected to the proximal end of the sheath tube; and a hub adapter engaging the hub and configured to engage the endoscope, wherein the sheath tube can rotate about the longitudinal axis without rotation of the hub adapter, and wherein the sheath tube is restricted from moving axially along the longitudinal axis relative to the hub adapter.

Abstract: An endoscope sheath is providing comprising a sheath tube extending along a longitudinal axis between a proximal end and a distal end, the sheath tube configured to receive at least a portion of an endoscope; a hub adapter connected to the sheath tube, the hub adapter including an arm configured to engage at least a portion of the endoscope so that the hub adapter and the sheath tube are restricted from rotating about the longitudinal axis; and a knob configured to engage a shoulder of the endoscope and the sheath tube so that movement of the knob relative to the hub adapter moves the sheath tube axially along the longitudinal axis.

Abstract: An endoscope sheath is providing comprising a sheath tube extending along a longitudinal axis between a proximal end and a distal end, the sheath tube configured to receive at least a portion of an endoscope; a hub adapter connected to the sheath tube, the hub adapter including an arm configured to engage at least a portion of the endoscope so that the hub adapter and the sheath tube are restricted from rotating about the longitudinal axis; and a knob configured to engage a shoulder of the endoscope and the sheath tube so that movement of the knob relative to the hub adapter moves the sheath tube axially along the longitudinal axis.

Abstract: A system comprising: (a) a sheath configured to receive all or a portion of an endoscope; (b) an irrigation line connecting the sheath to an irrigation source; (c) a suction line connecting the sheath to a suction source; and (d) a control module located between the sheath, and the irrigation source and the suction source and controls flow of irrigation fluid from the irrigation source to the sheath and movement of suction between the suction source and the sheath; wherein the irrigation source is connected to a resilient reservoir that is located within the control module and movement of the control module compresses the resilient reservoir moving irrigation fluid from the resilient reservoir to the sheath so that the irrigation fluid assists in cleaning the endoscope, and wherein the control module includes a valve and compression of the resilient reservoir initiates movement of the valve so that the valve opens and suction from the suction line is applied to the sheath.

Abstract: An endoscope sheath comprising: a tube having: a proximal end having a proximal end region and a distal end; and a conduit that extends through a portion of the endoscope sheath so that the proximal end region of the endoscope sheath and the distal end of the endoscope sheath are in fluid communication when an endoscope is inserted inside the endoscope sheath; and wherein the endoscope sheath is configured to receive all or a portion of the endoscope; wherein the distal end of the endoscope sheath has a flow director configured to direct irrigation fluid across a lens on the distal end of the endoscope; and wherein the flow director is a flexible flap.

Abstract: An endoscope sheath comprising: a proximal end; a distal end having a distal end region; a surface extending between and connecting the proximal end and the distal end; and a plurality of positioning devices located along the surface; wherein the sheath is configured to (1) receive all or a portion of an endoscope having a cylindrical end and (2) provide a conduit for communicating fluid between the proximal end of the sheath and the distal end of the sheath when the endoscope is inserted inside the sheath; and wherein the distal end region of the sheath includes the plurality of positioning devices that secure the cylindrical end of the endoscope against a portion of an inner wall of the surface extending between the proximal end and the distal end so that a fluid barrier is created between the cylindrical end of the endoscope and the inner wall.

Abstract: An endoscope sheath comprising: (a) a tube configured to receive all or a portion of a shaft of an endoscope, the endoscope including a light post in a proximal end region of the endoscope; and (b) an arm attached to and extending from a proximal end region of the sheath; wherein the arm has one or more features that are in communication with the light post to orient the sheath axially and rotationally with respect to the endoscope.

Abstract: A system comprising: (a) a sheath configured to receive all or a portion of an endoscope; (b) an irrigation line connecting the sheath to an irrigation source; (c) a suction line connecting the sheath to a suction source; and (d) a control module located between the sheath, and the irrigation source and the suction source and controls flow of irrigation fluid from the irrigation source to the sheath and movement of suction between the suction source and the sheath; wherein the irrigation source is connected to a resilient reservoir that is located within the control module and movement of the control module compresses the resilient reservoir moving irrigation fluid from the resilient reservoir to the sheath so that the irrigation fluid assists in cleaning the endoscope, and wherein the control module includes a valve and compression of the resilient reservoir initiates movement of the valve so that the valve opens and suction from the suction line is applied to the sheath.

Abstract: A surgical instrument has a hollow tubular member, and a pressurization unit that has an outer valve portion, a pressurization device having a movable part configured to generate pressurized fluid when the movable part is moved, and an inner valve portion. The inner valve portion includes a first flow passage that is configured to fluidically connect a first port and a second port of the outer valve portion to each other when the inner valve portion is in a first position, and a second flow passage that is configured between the inner valve portion and the outer valve portion to fluidically connect the first port and a third port when the inner valve portion is in a second position. A sealing system fluidically isolates the second port and the third port from each other at any position of the inner valve portion.