Various exemplary methods, systems, and devices for joint to pump elevation level user interfaces, autocalibration for joint elevation, and joint pressure estimation are provided. In general, an arthroscopic pump can be configured to estimate fluid pressure at a surgical site, e.g., at a joint, to provide an accurate indication of fluid pressure to users. In an exemplary embodiment, the fluid pressure estimation is based on a fluid pressure measurement at the pump that is adjusted at the pump, e.g., by a processor at the pump that executes instructions stored in a memory at the pump, using one or more control algorithms that adjust for one or more factors, such as pressure loss in tubing and sheath through which fluid flows between the pump and the surgical site and elevation difference between the pump and the surgical site.

A method for anal or stomal irrigation includes providing an irrigation system to a user and instructing the user to operate the system to expel the irrigating liquid from a catheter tip. The irrigation pressure is controlled with the control system in response to input from a sensor such that a pressure at the catheter tip approaches a predetermined threshold pressure value without exceeding the predetermined pressure value

Disclosed are various embodiments for an anti-reflux tube-type enemator that is leakproof, easy-to-clean, and quickly inflates to provide a steady flow of solution. The anti-reflux enemator includes a nozzle comprising a nozzle outlet, a tube fluidly coupled to the nozzle, and an enema bulb fluidly coupled to the tube. The enema bulb is configured to store solution therein and, in response to a squeezing force applied to the enema bulb, direct the solution through the tube and the nozzle, and expel the solution through the nozzle outlet. An anti-reflux coupler is positioned between the enema bulb and the tube through which the solution passes from the enema bulb to the tube. One or more one-way air valves are positioned relative to an aperture of the enema bulb.

Disclosed are various embodiments for an anti-reflux enema bag having a pulley restrictor that acts as a waterflow restrictor, where the enema bag is leakproof, easy-to-clean, and provides a steady flow of solution. An enema bag system includes an enema bag, a nozzle comprising a nozzle outlet, and an anti-reflux coupler positioned between the enema bag and the nozzle through which the solution passes from the enema bag to the nozzle outlet. The anti-reflux coupler comprises an inlet for receiving at least a portion of the solution from the enema bag; an outlet for expelling the solution into the nozzle; and a check valve configured to prevent reflux of the solution from the nozzle. The enema bag system further comprises a pulley restrictor configured to selectively control a speed at which the solution is introduced into the nozzle and expelled from the nozzle outlet.

Disclosed are various embodiments for an anti-reflux enemator that is leakproof and easy-to-clean. Generally, the anti-reflux enemator includes a nozzle, an enema bulb fluidly coupled to the nozzle, the enema bulb being configured to store solution therein and, in response to a squeezing force applied to the enema bulb, direct the solution through the nozzle and a nozzle outlet, an anti-reflux coupler positioned between the enema bulb and the nozzle through which the solution passes from the enema bulb to the nozzle, the anti-reflux coupler comprising an anti-reverse diaphragm configured to prevent reflux of the solution into the enema bulb from the nozzle, and at least one one-way air valve positioned relative to an aperture located at a base of the enema bulb.

A wound irrigation device may include a barrel having a fluid chamber at least partially filled with an irrigation fluid. A piston may be located in the barrel, where the piston is movable between a terminal proximal position and a terminal distal position within the barrel to control a volume of the fluid chamber of the barrel. An actuation spring may be mechanically coupled to the piston, where the actuation spring is configured such that a pressure of the irrigation fluid within the fluid chamber continuously exceeds about 4 psi as the piston moves between the terminal proximal position and the terminal distal position.

A surgical system includes a replaceable surgical cassette that is configured to be received by a surgical console, the surgical cassette permitting fluid flow through the cassette, the surgical system controlling the flow of fluid through the cassette via one or more flexible valves actuated by one or more actuation plungers located on the surgical console. The one or more flexible valves of the surgical cassette and the one or more actuation plungers of the surgical console include a positioning feature configured to assist with positioning the one or more actuation plungers to apply uniform and symmetric pressure to the one or more valves during actuation.

A peristaltic pump includes a first motor shaft, a second motor shaft, a first pump head, a second pump head, and a motor. The first pump head is operably coupled to the first motor shaft such that the first pump head is rotated in response to rotation of the first motor shaft. The second pump head is operably coupled to the second motor shaft such that the second pump head is rotated in response to rotation of the second motor shaft. The motor is configured to rotate the first and second motor shafts. The pump head has a first mode in which the first pump head is rotated and the second pump head is idle and a second mode in which the first pump head is idle and the second pump head is rotated.

Surgical assemblies for ocular surgery are provided. Such assemblies include direct measuring devices of intraocular pressure, surgical accessories utilisable in conjunction with a surgical instrument suitable for performing eye surgery, such surgical accessories being insertable in an ocular cavity through an accessory ocular incision. Direct measuring devices of intraocular pressure may be coupled to the surgical accessories so as to be insertable in the ocular cavity along with said surgical accessories through said accessory ocular incision.