The present disclosure is directed to an insufflator which includes a controller, an insufflation line, a desufflation line, and one pressure sensor and one volume flow sensor associated with each of the insufflation and desufflation lines. The insufflation line is in fluid communication with a gas source and the desufflation line in fluid communication with a suction pump. Wherein the controller controls ventilation of a gas present in patient by adjusting an amount of suction in the desufflation line as a function of pressure measurements obtained from the pressure sensors associated with the insufflation and desufflation lines. Additionally, the controller includes an activation blocking system that prevents suction in the desufflation line when a pressure measured by means of the pressure sensor associated with the insufflation line is lower than a preset threshold value. Still further, the activation blocking system further prevents suction in the desufflation line when the pressure measured by means of the pressure sensor associated with the insufflation line and a pressure measured by means of the pressure sensor associated with the desufflation line are not identical.

A system is disclosed for delivering insufflation gas to a body cavity of a patient during a surgical procedure, which includes an insufflator for delivering a flow of insufflation gas to the body cavity of the patient through a flow path that communicates with a pneumatically sealed trocar, a flow meter for measuring an amount of gas that has been removed from the body cavity by use of a suction device, and a controller operatively connected to the flow meter for receiving a flow measurement from the flow meter to determine when the suction device is in use and an amount of insufflation gas needed to be delivered to the body cavity by the insufflator to compensate for the gas removed from the body cavity by the suction device.

A system for accessing a patient's uterine cavity and detecting perforations in the uterus includes an elongated probe having a flow channel extending to a terminal outlet in a distal region of the probe. A fluid source is coupled to the flow channel, and a seal on the probe is positionable in an endocervical canal. The probe may be trans-cervical inserted into the uterine cavity, and a fluid may be introduced through the channel to flow outwardly from the terminal outlet into the uterine cavity. A parameter of said fluid flow is monitored to detect a perforation in the uterus.

A surgical gas delivery device includes a filter cartridge interface and a computer controlled control unit configured to control the circulation of surgical gas during endoscopic surgery. The control unit can operate in a plurality of different modes of operation. A tube set for connecting the surgical gas delivery device to one or more end effectors includes a filter cartridge in fluid communication with the tube set. The filter cartridge is seated in the filter cartridge interface of the surgical gas delivery device to communicate surgical gas between the surgical gas delivery device and the one or more end effectors. The surgical gas delivery device includes a reader operatively connected to receive input from a data carrying element of the tube set. The data carrying element, reader, and control unit can launch a specific one of the modes of operation when the filter cartridge is inserted.

An oxygen distributor (1) positionable, in use, in a wound for supplying oxygen to the wound has an oxygen delivery area (17) for, in use, receiving a supply of oxygen. At least one tube (19A) extends from the oxygen delivery area, having a tube wall with an oxygen-permeable, liquid-impermeable section. Oxygen delivered to the oxygen delivery area can flow away from the oxygen delivery area along the, or each, tube.

The present invention is directed to systems, devices and methods for trans-septally delivering carbon dioxide through a minimally invasive catheter to create a gaseous pocket or emphysema between the posterior wall of the left atrium and the esophagus during cardiac ablation of the left atrium. This pocket of gas expanded tissue serves to thermally insulate and separate the esophagus from the left atrium during ablation to prevent the formation of an atrial-esophageal fistula. The system comprises a control system to precisely deliver the gas to a desired location through a needle-based catheter assembly.

The present invention relates to a water reservoir for a device for gas humidification in laparoscopy with a water reservoir for connecting to a gas supply device (insufflator).

In accordance with an aspect of the present disclosure, a tissue extraction device may include a bag having an interior and a plurality of cutting elements extending through the interior of the bag.

An improved system and method of determining a low water and/or water-out condition in a humidifier chamber of a respiratory or surgical humidifier system can use a specific frequency band to detect changes in a temperature of a heater plate. The temperature changes can correlate to the specific heat capacity value of the humidifier chamber. The low water and/or water-out detection process can be performed without having to determine the gases flow rate and/or can be run continuously. A heater plate assembly of the system can include a compliant insulation sheet to improve thermal coupling between the heating element and the top heating plate of the heater plate assembly, thereby improving the low water and/or water-out detection process.

A cannula includes a tube having a central passage extending between a proximal end and a distal end of the tube along a longitudinal axis of the tube. A first cross section of the passage taken at or adjacent the distal end of the tube and in a plane normal to the longitudinal axis has a first cross-sectional shape, the first cross-sectional shape being non-circular. A second cross section of the passage taken through a portion of the tube proximal to the distal end of the tube and in a plane normal to the longitudinal axis has a second cross-sectional shape. The first cross-sectional shape is different from the second cross-sectional shape. Systems related to cannulas and tools for insertion through cannulas.