A tissue resecting instrument includes a housing, a shaft rotatable relative to the housing and defining a proximal end portion disposed within the housing and a distal end portion distally-spaced from the housing, a cutting member operably associated with the distal end portion of the shaft, a turbine disposed within the housing and operably associated with the proximal end portion of the shaft, and a fluid outflow tube operably associated with the housing. The fluid outflow tube is adapted to connect to a suction source to enable the suctioning of fluid and resected tissue proximally through a lumen of the shaft, an interior of the housing, and into the fluid outflow tube. The turbine is configured such that proximal fluid flow across the plurality of fins of the turbine urges the turbine to rotate, thereby rotating the shaft relative to the housing to enable tissue resection with the cutting member.

A surgical system can include a first instrument defining a first channel and a second instrument receivable by the first channel. The second instrument can include a second channel. A valve coupled to the first instrument controls fluid flow through the first channel. The valve has at least two positions and in one position, the impedance of fluid flow through the valve into the first channel (when the second instrument is not received in the first channel) is substantially the same as when the valve is the other position and the first channel partially blocked by the second instrument. In another aspect, a surgical system can include an outer member and the first instrument can be received within the outer member to define a second channel there between. The first instrument can include a visualization system and an illumination system.

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 apparatus for delivering an agent to a uterine cavity of a patient for endometrial ablation including a first passage for passage of the agent into the cavity of the patient and a second passage for aspirating the agent from the uterine cavity, wherein the agent is injected at an increased pressure and is injected simultaneously with aspiration of the cavity. A cavity integrity check prior to injection of the agent can be conducted with the apparatus.

A device for intrauterine vacuum therapy includes a pear-shaped fluid-collecting element and a fluid-communicating element. The fluid-collecting element defines an inlet opening at the proximal end and a tubular cavity for receiving a removable guide-rod during transvaginal insertion into a uterine cavity. The fluid-communicating element has a perforated distal end fixed within the fluid-collecting element outside the tubular cavity and has a proximal end adapted for connection to a vacuum-generating system. A method of treating an intrauterine wound or infection includes transvaginally inserting a drain into a uterine cavity and applying a negative pressure to the drain such that the uterus collapses and the inner wall is aspirated against the drain.

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.

A method of determining a pressure of a body cavity with a controller of a fluid management system includes determining a pressure and a volume of a cuff disposed about a collapsible bag, determining a volume of the collapsible bag based on the pressure and the volume of the cuff, and determining a pressure of the collapsible bag based on the volume of the collapsible bag. The method also includes calculating a fluid flow from the collapsible bag into a body cavity from the collapsible bag and determining a pressure of the body cavity based on the fluid flow

A device for managing postpartum hemorrhage is described. The device comprises an intrauterine balloon that may be deflated when inserted into a uterine cavity. The intrauterine balloon may be inflated inside the uterine cavity. The device also comprises a drug delivery vehicle that may be deposited on an outer surface of the intrauterine balloon by a coating technique or an eluting technique. The drug delivery vehicle may release a hemostatic drug into the uterine cavity. The device additionally comprises a cervical barricade that may retain the released hemostatic drug in the uterine cavity. The cervical barricade may be a cone-shaped plug that tapers proximally to conform to a contour of a vagina. The device further comprises a catheter that may be used to inflate the intrauterine balloon, deflate the intrauterine balloon, and support the cervical barricade.

An everting balloon system is disclosed that can be used for biopsy within a body of a patient or animal. The everting balloon system can be used to access a bodily cavity or vessel for tissue specimen collection at specific bodily locations. The everting catheter system described simplifies the process of tissue biopsy.

A surgical system includes a surgical instrument, a collection canister, outflow tubing coupled between the surgical instrument and the collection canister to define an outflow path from the surgical instrument to the collection canister, and a control console. The outflow tubing includes a valve module including a controllable valve disposed within the outflow path to selectively control flow therealong. The control console is configured to control operation of the surgical instrument and to control the controllable valve.