Abstract: In one embodiment, there is provided an inlet for a humidification chamber for use in a medical humidification system, the inlet comprising an inlet end configured to receive gases flow from a gases source, an outlet end configured to introduce the gases flow to the inside of the humidification chamber, and at least one wall defining, at least in part, a passageway between the inlet end and the outlet end for conveying gases therebetween. The outlet end of the inlet is configured to terminate in the humidification chamber or at a wall of the humidification chamber, and the passageway is configured to guide the gases flow such that the center of the gases flow at the inlet end and at the outlet end are substantially aligned along a common axis or the outlet end defines a profile of the passageway thereat that has a width and a height, a ratio of the width to height being between about 1:20 and 1:5.

Abstract: A surgical cannula for providing insufflation gases to a surgical cavity of a patient (for example, the pneumoperitoneum) and allowing insertion of medical instruments into the surgical cavity through the cannula can include a heater within or coupled to the cannula. The heater can heat the gases and/or the instruments to raise the temperature of the gases and/or instruments above a dew point of the gases to prevent fogging. The heater can also help to defog a lens of a medical instrument by heating to clear the lens and improve optical clarity.

Abstract: A surgical cannula for providing insufflation gases to a surgical cavity of a patient (such as the pneumoperitoneum), allowing insertion of medical instruments into the surgical cavity through the cannula, and venting gases from the surgical cavity to the outside environment can include venting features including filters to more safely reduce the amount of undesirable materials such as smoke from reaching the outside environment.

Abstract: Various venting attachments or leak devices can be removably or permanently coupled to a surgical cannula to allow a user to vent gases, in particular smoke, from a surgical cavity. The venting attachment can be configured to vent the smoke at a predetermined rate and filter out the smoke prior to venting to atmosphere. The substantially constant venting flow rate can promote clearing of the smoke in the surgical cavity while helping to maintain a substantially constant pressure, and thus stability, in the surgical cavity.

Abstract: Disclosed herein is a surgical cannula configured as an instrument retaining or centering apparatus, configured for providing insufflation gases to a surgical cavity of a patient (such as the pneumoperitoneum) and allowing insertion of medical instruments into the surgical cavity through the cannula. The cannula can include features to direct gas flow in particular directions to prevent or reduce smoke, fog/condensation, or other unwanted media from contacting a portion of a medical instrument.

Abstract: In one embodiment, there is provided a humidification chamber for use in a medical humidification system. The humidification chamber may comprise: a base and a top linked by a side wall to define the chamber, the chamber being configured to contain a volume of water; a gases inlet configured to receive a gases flow from a gases source; and a gases outlet, wherein the gases inlet is orientated relative to the side wall to introduce the gases flow to the humidification chamber at a direction substantially tangential to the side wall of the humidification chamber.

Abstract: In one embodiment, a Luer lock connector for use in an insufflation system is described. The Luer lock connector includes: a body comprising a first end, a second end and an interior region; the interior region defining a gases flow passageway allowing insufflation gases to flow through the body from the first end to the second end; and the body being configured to be coupled to a tubing arrangement at the first end and to a patient interface at the second end; wherein, the second end is configured to be coupled to a patient interface fitting of the patient interface, the second end being further configured to seal around an outer surface of the patient interface fitting when the Luer lock connector is coupled to the patient interface; and wherein, the second end forms a seal with the outer surface of the patient interface fitting when the second end and the patient interface fitting are coupled.