Improved methods and devices for performing an endoscopic surgery including a system for performing minimally invasive procedures including a flexible catheter having a working space expanding system positioned at a distal portion, the working space expanding system movable from a non-expanded insertion position to an expanded position forming an expanded region to expand the working space within the body lumen. A tissue retractor having an inner member positioned within an outer member has a plurality of closed loops at a distal portion forming a petal-like structure. The loops are positioned in a collapsed position within the outer member and are movable to an expanded position when exposed from the outer member.

According to one aspect, a method for removing material from a body lumen is disclosed. The method may include positioning a first medical device within the body lumen; and expanding an expandable member at a distal portion of the first medical device from a retracted state to an expanded state. The expandable member may abut the body lumen in the expanded state. The method may further include providing fluid to a fluid lumen of the first medical device, wherein the fluid is deployed into the body lumen; applying an ultrasound signal to the first medical device from a second medical device; and moving the first medical device distally through the body lumen while the expandable member is in an expanded state, to remove material from the body lumen.

A medical device may comprise a handle portion; an insertion portion having a proximal end portion at the handle portion, wherein the insertion portion includes a lumen therein and a distal end having a distal opening in communication with the lumen; and a member disposed within the lumen, the member having a distal end portion with an imaging device. The member may be configured to transition between a first configuration and a second configuration. In the first configuration, the imaging device may face distally, and, in the second configuration, the imaging device may face proximally. Extending the distal end portion of the member distally past the distal opening may cause the member to transition from the first configuration to the second configuration.

An endotracheal tube includes a main tubular portion including a distal end and a proximal end opposite the distal end, the main tubular portion including a central lumen at least in part defined by a wall of the main tubular portion; a wire lumen disposed within the wall of the main tubular portion, the wire lumen defined at least in part by a sidewall portion of the wire lumen and extending from about the proximal end of the main tubular portion to about the distal end of the main tubular portion; a wire disposed in the wire lumen; and one or more cutouts extending along a portion of the wall of the main tubular portion, the cutouts comprising openings in the sidewall portion of the wire lumen, wherein the cutouts are not in fluid communication with the central lumen.

Catheters with weeping balloons can be used for various medical purposes. For example, in some embodiments provided herein weeping balloons are used for catheter visualization devices. In some embodiments, weeping balloons are used to deliver therapeutic agents. Weeping balloons can include openings of a selected size and shape through which a fluid gradually flows or “weeps.” The design of the openings can affect performance characteristics such as, but not limited to, fluid flow rate, tear resistance, and mitigation of counter-flow.

Methods and devices for performing minimally invasive procedures useful for Fallopian tube diagnostics are disclosed. In at least one embodiment, the proximal os of the Fallopian tube is accessed via an intrauterine approach; an introducer catheter is advanced to cannulate and form a fluid tight seal with the proximal os of the Fallopian tube; a second catheter inside the introducer catheter is provided to track the length of the Fallopian tube and out into the abdominal cavity; a balloon at the end of the second catheter is inflated and the second catheter is retracted until the balloon seals the distal os of the Fallopian tube; irrigation is performed substantially over the length of the Fallopian tube; and the irrigation fluid is recovered for cytology or cell analysis.

The present invention provides an improved visual laryngeal mask comprising a tube, an end of the tube is provided with a fixing seat. The fixing seat is provided with an airbag, and the fixing seat has a recess which is provided with an airway opening. An imaging cavity extends longitudinally inside an inner wall of the tube. The imaging cavity has a built-in imaging device, and the imaging cavity protrudes forward relative to the airway opening to form a stopper which prevents an epiglottis from blocking the imaging device. A front end of the stopper is concaved to form a recess, and an opening of the imaging cavity is located at a low point of the recess.

An ultrasonic endoscope system has an ultrasonic endoscope including an ultrasound transducer provided in a distal end part body, and a balloon for an ultrasonic endoscope that covers an outside surface of the ultrasound transducer, the balloon for an ultrasonic endoscope has an opening portion that is provided at one end in a first direction corresponding to a longitudinal direction of an insertion part and that is attached to the distal end part body, and includes a swelling portion that stores an ultrasonic wave transmission medium inside to be swellable, and a fixing portion that is in close contact with and fixed to the distal end part body, the distal end part body includes standing wall portions on both sides of the ultrasound transducer in a direction perpendicular to the first direction, and at least the fixing portion is in close contact with and fixed to the standing wall portion by contractile force of the fixing portion.

Disclosed is an endoscope cap includes a cap body coupled to a tip end of an endoscope introduced into an interior of an organism, an expansion/contraction part provided in the cap body, and expanded or contracted through injection of air, and an air supply part that injects or suctions the air into or from the expansion/contraction part, and the air supply part expands the expansion/contraction part by injecting the air into the expansion/contraction part and the expanded expansion/contraction part bends back a target tissue in the interior of the organism when the cap body reaches the target tissue.

A pellet for testing intestinal and anorectal function. In one embodiment of a system of the present disclosure, the system comprises a pellet comprising a balloon or bag, and a fill tube configured to be removably coupled to the pellet, the fill tube configured to permit selective filling of the balloon or bag