A hysteroscopic fluid management system includes a saline source with an electrolyte concentration, at least one pressure mechanism for circulating saline to and from a targeted site and through a filter having filter characteristics back to the source, and a controller. The controller provides a saline inflow in a first flow path to the site and a saline outflow in a second flow path from the site through the filter and back to the source at a controlled flow rate. A diagnostic or therapeutic procedure is performed at the site in the presence of the saline. The filter characteristics and the controlled flow rate are selected to (1) cause substantially no change in the electrolyte concentration in the saline, (2) to prevent hemolysis of greater than 5% of filtered red blood cells exposed to the saline, and/or (3) to minimize effect on prothrombin time of plasma exposed to the filter.

Devices for treating uterine bleeding. An actuator is configured to receive an input to deploy an intrauterine portion of the device to assume a larger outer profile within the uterus. The actuator may be coupled to a device body and configured to receive a pull input, a push input, or a twist input. The intrauterine portion may include flexible opposing members, rotatable tines, a segmented hook, an adjustable loop, or compressible foam. The intrauterine portion defines a lumen and suction ports configured to draw suction within the uterus. Indicia may be provided on the actuator to indicate an extent by which the intrauterine portion has been deployed within the uterus. An orientation of the actuator may correspond to a direction of deployment of the intrauterine portion. The device may include valves and an auxiliary suction source configured to provide suction with the device decoupled from a vacuum source.

Systems and methods for perfusing a treatment solution into the blood stream of particular organs while isolating those organs from the systemic vasculature as a whole. By deploying both collection and supply catheters, some having balloons on their distal ends, to particular locations within the body, various organs can be isolated so that the treatment solution can be delivered directly thereto. By isolating the organs, any side effects that may occur from a systemic introduction of the treatment solution are avoided. The method may be used to isolate not just organs, but specific tumors within certain organs for oncology treatment.

A method of reducing postpartum bleeding includes positioning a device comprising a vacuum clement within the uterus; scaling the uterus; activating vacuum in the uterus with the vacuum element of the device while the uterus is sealed; and collapsing the uterus with the vacuum to reduce postpartum bleeding.

A cannula apparatus including an outer tube with an elongated body and a groove, an inner tube disposed inside the outer tube and being manipulable through the groove, and a cap including a hole, the cap mounted at one end of the outer tube through the hole, in which the inner tube is freely slidable relative to the outer tube.

An embryo replacement catheter has a flexible extruded shaft of a transparent polyurethane with a bore extending along its length. Gas bubbles of a diameter in the range 5 to 10 are incorporated into the thickness of the wall of the shaft by adding gas during extrusion. The bubbles are selected to increase the visibility of the catheter under ultrasound imaging whilst still enabling material flowing along the catheter to be seen.

A fluid management system for use in a tissue resection procedure includes a controller. An inflow pump is operated by the controller and configured to provide fluid inflow through a flow path to a site in patient's body. An outflow pump is operated by the controller and configured to provide fluid outflow through a flow path from the site in patient's body. A motor driven resecting device may be provided for resecting tissue at the site. The controller is configured to actuate an inflow pump and an outflow pump in response to various signals and various algorithms are provided to provide malfunction warnings and assure safe operation.

An insertable device is designed to control uterine hemorrhaging after birth by facilitating contractile movement of the uterus. An insertable device comprises a tube having a connecting portion and a suction portion and a seal positioned along the length of the connecting portion proximal to the suction portion. Upon insertion of the suction portion and seal into the uterus, the seal abuts a vaginal canal and forms a seal between a vaginal opening and the uterus. The suction portion comprises a first loop having an opening that is oriented away from an interior wall of the uterus when inserted into the uterus. The connecting portion of the tube couples to a pump that when actuated generates a negative pressure within the uterus, resulting in a uniform mechanical stimulus to the uterine wall in order to facilitate tamponade and contractile movement of the tissue.

A surgical fluid management system delivers fluid for distending a uterine cavity to allow cutting and extraction of uterine fibroid tissue, polyps and other abnormal uterine tissue. The system comprises a fluid source, fluid deliver lines, one or more pumps, and a filter for re-circulating the distension fluid between the source and the uterine cavity. A controller can monitor fluid retention by the patient.

An intrauterine pressure-sensing catheter for detecting pressure changes within the uterus of a patient is disclosed having a tube with a primary lumen extending from a proximal end to a distal end of the elongate tube. A monitor lumen is positioned within the elongate tube between the primary lumen and a wall of the elongate tube and extends from a proximal end of the elongate tube to a distal end of the elongate tube. A compliant balloon is disposed about an exterior of the elongate tube adjacent a distal end tip. A sleeve is slidably mounted on an exterior of the elongate tube and disposed over the compliant balloon during insertion of the catheter within the patient. The distal end tip is configured to prevent movement of the sleeve over the tip and is further configured to provide a zone of protection for the compliant balloon.