An infusion pump includes a housing. The housing includes a tube port adapted to receive an intravenous (IV) tube. The tube port includes a tube channel and a rib. The tube channel has an inlet and an outlet end. The rib is positioned along the channel adjacent the outlet end. The rib is formed to extend towards the tube when the tube is passed through the tube port thereby indenting the tube and tending to prevent full occlusion of the tube. The tube port may also include a plurality of ribs positioned around a perimeter of the tube port on the exterior side of the housing. The plurality of ribs are configured to prevent an occlusion in the tube when the tube is bent on the exterior side of the housing.

An extension set may include a clamp, which may include a housing and an actuator. The actuator may be movable between a raised position and a depressed position with respect to the housing. The actuator may include a bump profile. The extension set may include an extension tube, which may be disposed within the housing. The extension tube may include a loop. In response to movement of the actuator between the raised position and the depressed position with respect to the housing, the bump profile may progressively clamp the extension tube along the loop. The loop may facilitate an increased fluid volume flowing distally towards a catheter in response to actuating the clamp.

A flow controller arranged to provide controlled constriction of a hollow body conduit, including a catheter including a first end and a second end, a strap slidably arranged within the catheter, the strap including a third end and a fourth end, the third end arranged to be connected to the catheter to form a loop, and a tensioning means connected to the second end and the fourth end, wherein the tensioning means is operatively arranged to axially displace the strap relative to the catheter to increase and decrease a diameter of the loop.

Apparatus, system and method for providing pressurized infusion of liquids and, more particularly, providing a stable and pressurized flow of fluid to the eye during surgery. Aspiration fluid may be received via an aspiration line at a first peristaltic pump, where aspiration fluid is transferred to a Venturi tank reservoir coupled to a second peristaltic pump. Fluid from a fluid source is provided via a third peristaltic pump to a pressurized infusion tank. A determination is made if the pressure in the pressurized infusion tank is at a predetermined level, where fluid may be transferred from the pressurized infusion tank to an irrigation line when pressure in the pressurized infusion tank is determined to be at the predetermined level. Alternate activation of a plurality of aspiration and irrigation lines are also provided.

A tubing assembly for use with a fluid delivery system has a first fluid line having a distal end and a proximal end for connecting to a first fluid source, and a second fluid line having a distal end and a proximal end for connecting to a second fluid source. The tubing assembly further has a third fluid line having a distal end and a proximal end, and a connector assembly for connecting the distal end of the first fluid line and the distal end of the second fluid line to the proximal end of the third fluid line. A tubing holder receives at least a portion of the third fluid line. The tubing holder has a first portion and a second portion movable relative to the first portion to selectively block fluid flow through the third fluid line.

A pinch clamp device may include a first arm, which may include a first end, a second end, a first clamping surface, a first extension, and a set of first ledges proximate the first extension. The pinch clamp device may include a second arm, which may include a first end, a second end, a second clamping surface, a second extension, and a set of second ledges proximate the second extension and configured to align with the first clamping surface when the pinch clamp device is in a closed position. The set of first ledges may be configured to align with the second clamping surface when the pinch clamp device is in the closed position. The pinch clamp may include a hinge interconnecting the second end of the first arm and the second end of the second arm.

Constriction valves for catheters and method of using constriction valves are presented. The catheter valve has a conduit comprising mesh defining a lumen. The catheter also has a biasing member that is configured to bias the lumen from an open position to a closed position by altering an effective length of the conduit or altering the circumference of the conduit. The biasing member is further configured to change its configuration by changes of intraluminal pressure of the valve. A user can insert a tool into a catheter having a valve by manipulating the valve to expand a substantially closed lumen by compressing the biasing member, twisting the biasing member, or pulling on a cord coupled with the valve.

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.

An infusion pump includes a housing. The housing includes a tube port adapted to receive an intravenous (IV) tube. The tube port includes a tube channel and a rib. The tube channel has a first end and a second end. The rib is formed to extend laterally from the tube channel at the first end to form at least two channels at an edge of the housing. The rib tends to prevent full occlusion of the IV tube.

Constriction valves for catheters and method of using constriction valves are presented. The catheter valve has a conduit defining a lumen. The catheter also has a spring that is configured to bias the lumen from an open position to a closed position by altering an effective length of the conduit or altering the circumference of the conduit. The spring is further configured to change its configuration by changes of intraluminal pressure of the valve. A user can insert a tool into a catheter having a valve by manipulating the valve to expand a substantially closed lumen by compressing the spring, twisting the spring, or pulling on a cord coupled with the valve.