A system for filling multiple sterile containers includes a filter with an inlet port and multiple outlet ports, the outlet ports being pre-attached to sterile containers by respective filling lines of each container. Each container has an interior and each of the respective filling lines are connected to a respective container interior. The respective filling lines are sealed to the outlet ports and the containers such that the container interiors are isolated from an external environment except the inlet port, via the filter, forming a combined interior volume which is sterile. A container that is connectable to an outlet port the system has a bladder, a first tube and a second tube connected to the bladder, and a sterilizing filter. The container, the first tube and the second tube, and the sterilizing filter are sterile before water is flowed through the sterilizing filter into the bladder.

Aspects of the present disclosure include control systems of an electrosurgical system for managing the flow of fluid, such as saline, and rates of aspiration or suction, in response to various states of conditions at a surgical site. The control system(s) may monitor and adjust to impedance at the surgical site, temperature of the surgical tissue, and/or RF current of electrodes, and may account for certain undesirable conditions, such as the electrodes sticking. The control systems may include various automatic sensing scenarios, while also allowing for several manual conditions.

A tube occluder includes a body within which an end of the tube is attached; a twisting lug formed with or attached to the tube, the twisting lug including an outwardly extending shape; and a sleeve in rotational communication with the body, the sleeve including an internal profile that matingly engages the outwardly extending shape of the twisting lug, the sleeve rotatable relative to the body in a first direction such that the internal profile causes the twisting lug to twist the tube closed, the sleeve rotatable in a second direction such that the internal profile causes the twisting lug to twist the tube open. A tube occluding method includes enabling a user to rotate the sleeve relative to the body, causing the internal profile to turn the twisting lug and to twist the tube closed while the end of the tube remains secured within the body.

For producing a high pressure impulse, a hose bending valve is provided that comprises a loop (12) provided in a supply hose of an instrument (2) and a hose bending device (8) provided as multiple-use component. Such a valve is very simply constructed and allows the creation of steep pressure increase flanks with very high pressures up to 100 bar, as are needed for a needleless injection. The sterilization effort is minimal. Also, the material effort is minimal, if single-use components are used.