A distal end hood for an endoscope includes: a main body portion formed in a cylindrical shape in a longitudinal axis direction, wherein a distal end portion of an insertion portion of the endoscope is inserted inside through an opening on a proximal end side in the longitudinal axis direction, and the main body portion is formed such that part of a distal end surface in the longitudinal axis direction protrudes forward in the longitudinal axis direction; and a projection portion provided on an outer peripheral surface of the main body portion and formed in a rib shape extending toward a proximal end in the longitudinal axis direction from a protrusion end surface of a part of the distal end surface protruding in the longitudinal axis direction.

An endoscope having an endoscope shaft, with a distal shaft portion, a central shaft portion and a proximal shaft portion, and a light admission face at the distal shaft portion. The cross section of the central shaft portion is smaller than the cross section of the distal shaft portion and smaller than the cross section of the proximal shaft portion.

Disclosed are methods for performing endoscopy comprising directing a distal end of an endoscope to proximity of a portion of a surface of a bodily cavity; and directing a liquid-gas stream at a portion of the surface of the bodily cavity. Disclosed are also devices useful in endoscopy, comprising: an elongated body having a proximal end and a distal end; a nozzle at the distal end; a gas channel configured for conveying a gas from the proximal end to the nozzle; and a liquid channel configured for conveying a liquid from the proximal end to the nozzle, wherein the nozzle is configured to generate a liquid-gas stream directed in a specified direction from a gas conveyed by the gas channel and a liquid conveyed by the liquid channel.

A distal tip of an endoscopic device and a cylindrical cap is disclosed. The distal tip comprises a pattern of alternating grooves and lands on its outer surface. The cylindrical cap is configured to fit tightly over the lands, thereby changing the grooves into closed channels through which liquid or gas can flow.

An endoscope including an insertion tube for insertion into a patient's body cavity and a tip at the distal end of the insertion tube, the tip including a tip housing encapsulating an optical inspection device, a viewing window for or of the optical inspection device and a fluid spray nozzle having an outer wall providing a fluid channel surrounded by the outer wall for spraying a fluid onto the viewing window, the fluid spray nozzle having at least one fluid splitting element arranged in the fluid channel for providing a converging fluid flow out of the nozzle onto the viewing window.

A tip for a single use endoscope, the endoscope and a method of producing the tip. The tip includes a housing encapsulating a light emitting device and an imaging device in a fluid tight manner, where the light emitting device is arranged on a planar printed circuit board provided within the housing, and the housing at least in part is made from a transparent material and comprises at least one transparent light guiding part or light guiding section for guiding light emitted by the light emitting device to an outside of the tip.

An endoscopy device is configured with a flexible cannula or tube for nasal insertion and has multiple parallel and adjacent lumens that provide sub-chambers configured to provide means to diagnose and treat Barrett's esophagus, such as by spray cryo-therapy with no further insertion of tubes. The lumens are configured to impart a small diameter with sufficient flexibility for nasal insertion into a patient's esophagus and accommodate a means any treatment modality. In the case of cryo-therapy, a lumen provides gas pressure relief, and is along the tube, with separate lumens for the delivery of a liquid freezing agent and an imaging means, which includes a source of illumination. Outer lumens may support guide wires used to steer the tube tip and aim the camera to determine the where to immobilize tip before the start of the treatment and/or to correct strictures formed in prior procedures.

The present disclosure relates to vision preservation systems for medical devices, such as cryospray devices for use with endoscopes. Exemplary embodiments provide a distal attachment in the form of a shroud or cap that mounts to the end of a flexible endoscope. A purging fluid supply mechanism is provided along the length of the endoscope, providing a channel for purging fluid, such as gas, to communicate between the endoscope tip and an external gas supply. The cap or shroud assembly incorporates a lens clearing flow field adjustment mechanism, such as nozzles, designed to direct warm (room temperature or higher) purging fluid across a lens at the scope tip. Another flow deflection mechanism, such as a guide or nozzle, may be included with the cap to direct purging fluid at an angle away from the lens. Gas, as an example, directed across and toward the lens purges moisture to avoid condensation on the lens and shears debris and bodily fluids away from the field of view. Gas directed or deflected by a guide away from the lens serves the purpose of keeping incoming particles and fluid droplets (e.g. spatter) from impacting on the lens cover. The cap and shroud are designed to avoid entraining moist air from the body cavity or lumen being treated.

A multi-functional endosurgical device (1) comprises a tube (3), an end effector (21), and a device operating part (4). The tube (3) several lengthwise extending channels (9) for supplying a liquid and suction to the end effector (21) and to apply current to perform diathermy. A slide rail assembly (5) comprises at a main slide guide body (46) that accommodates an end effector slider (47) and a junction slider (48). The end effector slider (47) slides in the guideway (54) and is connected to the effector sleeve (17) through one of the lengthwise extending channels to operate said effector sleeve (17) in relation to the end effector. The junction slider (48) also slides in the guideway (54) downstream the end effector slider (47). The junction slider (48) is connected to the tube (3) to arrange at least a first lengthwise extending channel (9), a second lengthwise extending channel (10) and a third lengthwise extending channel (15) of the tube (3) in communication with the end effector (21).

An endoscope includes a handle including a handle housing, an irrigation inlet port adapted to receive irrigation fluid, and an irrigation channel; and an insertion cord extending distally from the handle. The insertion cord includes an insertion tube; a bending section extending from the insertion tube; a distal tip extending from the bending section and including a tip housing; a camera at least partially enclosed in the tip housing; interstitial space within the insertion tube in fluid communication with the irrigation channel; and at least one interstitial flow opening in fluid communication with the interstitial space and adapted to discharge the irrigation fluid.