The device comprises of a housing defining a channel there through, a torsion-spring based clamping mechanism, a drop sensor connected with circuitry, a manual infusion fluid regulation mechanism and a power source. An upper portion of the channel accommodates at least a part of a drip chamber and a lower portion of the channel accommodates at least a part of infusion tubing. The clamping mechanism comprises of one or more torsion springs and is configured for engaging and holding drip chamber and can be adjusted according to the drip chamber diameter. The drop sensor and the circuits coupled with it are configured for detecting real time drop rate of the infusion fluid. The regulation mechanism comprises of a drivable pinching element for sliding into the channel and compressing the infusion tubing thereby regulating the flow of the infusion fluid through the infusion tubing.

An apparatus, method, and system for detecting a leaking occluder valve is disclosed. Upper and lower occluder elements of an infusion pump are activated to compress a fluid tubing filled with a fluid to isolate the fluid in an upstream portion of the tubing from a downstream portion of the tubing. While the fluid tubing is compressed by the occluder elements, a pumping element of the infusion pump is activated to compress an intermediate portion of the tubing, between the downstream portion and the upstream portion, to cause a pressure increase within the fluid tubing. Using at least one pressure sensor, a determination is made as to whether the pressure increase is present in a portion of the fluid tubing on a side, of an activated occluder element, opposite the intermediate portion of the tubing.

A fluid handling cassette, such as that useable with an automated peritoneal dialysis (APD) cycler device or other infusion apparatus, may include a generally planar body having at least one pump chamber formed as a depression in a first side of the body and a plurality of flowpaths for a fluid that includes a channel. A patient line port may be arranged for connection to a patient line and be in fluid communication with the at least one pump chamber via at least a first one of said flowpaths, and an optional membrane may be attached to the first side of the body over the at least one pump chamber. In one embodiment, the membrane may have a pump chamber portion with an unstressed shape that generally conforms to the depression of the at least one pump chamber in the body and is arranged to be movable for movement of the fluid in a useable space of the at least one pump chamber. One or more spacers may be provided in the at least one pump chamber to prevent the membrane from contacting an inner wall of the at least one pump chamber. The patient line, a drain line, and/or a heater bag line may be positioned to be separately occludable in relation to one or more solution lines that are connectable to the cassette.

A pinch clamp device for a flexible tube is disclosed, the pinch clamp device comprising a first part (2) and a second part (3) that are movable with respect to each other, wherein the first part (2) comprises a first conduit (5) for housing a flexible tube and the second part (3) comprises a second conduit (6) for housing the same flexible tube, wherein the first part (2) and the second part (3) are arranged in an interacting manner such that the pinch clamp device can be present in a first position or in a second position, wherein a flow of a fluid within a flexible tube arranged inside the first conduit (5) and the second conduit (6) is enabled in the first position, and wherein a flow of a fluid within a flexible tube arranged inside the first conduit (5) and the second conduit (6) is prevented in the second position. According to an aspect of the invention, the first part (2) and the second part (3) are designed axisymmetrically. Furthermore, a pinch clamp arrangement comprising such a pinch clamp device is disclosed. Additionally pump arrangement comprising a pump and such a pinch clamp arrangement is disclosed.

A fluid handling cassette, such as that useable with an automated peritoneal dialysis (APD) cycler device or other infusion apparatus, may include a generally planar body having at least one pump chamber formed as a depression in a first side of the body and a plurality of flowpaths for a fluid that includes a channel. A patient line port may be arranged for connection to a patient line and be in fluid communication with the at least one pump chamber via at least a first one of said flowpaths, and an optional membrane may be attached to the first side of the body over the at least one pump chamber. In one embodiment, the membrane may have a pump chamber portion with an unstressed shape that generally conforms to the depression of the at least one pump chamber in the body and is arranged to be movable for movement of the fluid in a useable space of the at least one pump chamber. One or more spacers may be provided in the at least one pump chamber to prevent the membrane from contacting an inner wall of the at least one pump chamber. The patient line, a drain line, and/or a heater bag line may be positioned to be separately occludable in relation to one or more solution lines that are connectable to the cassette.

An apparatus, system and method for regulating fluid flow are disclosed. The apparatus includes a flow rate sensor and a valve. The flow rate sensor uses images to estimate flow through a drip chamber and then controls the valve based on the estimated flow rate. The valve comprises a rigid housing disposed around the tube in which fluid flow is being controlled. Increasing the pressure in the housing controls the size of the lumen within the tube by deforming the tube, therefore controlling flow through the tube.

A medical pump, in particular an infusion pump for conveying a medium, includes a seating for a hose clamp which is separate from the pump and arranged on the hose. Two clamping portions of the hose clamp which can be moved relative to each other can be transferred into a closed relative position in which they pinch off the hose arranged therebetween in such a manner that it is not possible for any medium to flow through the interior of the hose. Moreover, the clamping portions can be moved with respect to each other into an opened relative position in which the hose arranged between the clamping portions is not pinched off, so that the medium is able to flow through the interior of the hose. The pump is distinguished in that a sensor is provided thereon, in particular in the seating for the hose clamp, which sensor detects at least when the hose clamp is received in the seating—whether their clamping portions are in the closed or opened relative position.

An embodiment is directed to pressure plate for attachment to an infusion pump, where the pressure plate includes a tubing support surface at least partially surrounded by a raised perimeter support. The pressure plate includes a plurality of guide structures extending from the raised perimeter support that define a passageway for an infusion pump tube. Additionally an attachable flow stop assembly is included that includes an attachable occlusion arch and an attachable flow stop arm. The attachable occlusion arch includes a plurality of tab structures that couple to the raised perimeter support. The occlusion arch further includes an aperture configured to surround an infusion pump tube threaded therethrough. The attachable flow stop arm is operatively coupled to the raised perimeter support adjacent the attachable occlusion arch in a spring-biased fashion such that the aperture in the occlusion arch may be selectively occluded by the flow stop arm.

A flow meter includes an image sensor and a processor. The image sensor is configured to capture an image of a drip chamber. The processor is configured to determine whether the captured image of the drip chamber contains a match to a template, and to apply a blurring function to the image captured by the image sensor of the drip chamber such that the processor can determine if the captured image contains a match to the template.

A cassette usable with an infusion pump includes a monolithic cassette body and a segment of resiliently deformable tubing for conveying a flow of liquid. The monolithic cassette body has an integrally formed free-flow protection device including a fixed pinch element and a deflectable pinch arm having a movable pinch element. The pinch arm normally resides in a closed position wherein the pinch elements cooperate to deform the tubing segment to stop flow. The pinch arm is resiliently deflectable away from the closed position to an open position permitting flow. Deflection of the pinch arm away from the closed position spring biases the pinch arm for automatic return to the closed position. The pinch arm may be moved to the open position by operating a door of the pump when the cassette is loaded in the pump, and manually for priming when the cassette is not loaded in the pump.