An infusion pump apparatus includes a length of resilient tubing removably loadable in an infusion pump having a housing, a pumping mechanism, and a pump door. A latch member is pivotally mounted to the pump door and cooperates with a latch pin fixed on pump housing. A free-flow protection device is biased to pinch the tubing closed to stop fluid flow. The latch member has a first range of pivotal motion in a latching direction for causing the latch member to engage with the latch pin to secure the door in a closed position and a second range of pivotal motion in the latching direction for causing the latch member to actuate the free-flow protection device to unpinch the tubing and allow flow. The latch member pivots through at least a portion of the first range of pivotal motion before beginning to pivot through the second range of pivotal motion.

A pump for mimicking physiological blood flow in a patient is disclosed. The pump works via compression and decompression of a tube, inducing a peristaltic flow within the tube. The compression may be effected by a linear actuator, or alternatively by a pivoting compression member. A one-way check valve ensures flow in a single direction.

Various fluid delivery systems are described comprising an infusion pump having a housing with a first opening and a hollow interior portion that is configured to receive a cartridge having a tubing. A pump unit can be disposed within the housing. The pump unit comprises a motor mechanically coupled with a crank shaft or eccentric cam that is configured to move a set of pistons or other objects to thereby compress one or more portions of the tubing over time as the crank shaft or eccentric cam rotates.

A technique for separating components of a microfluid, comprises a self-intersecting micro or nano-fluidic channel defining a cyclic path for circulating the fluid over a receiving surface of a fluid component separating member; and equipment for applying coordinated pressure to the channel at a plurality of pressure control areas along the cyclic path to circulate the fluid over the receiving surface, applying a pressure to encourage a desired transmission through the separating member, and a circulating pressure to remove surface obstructions on the separating member. The equipment preferably defines a peristaltic pump. Turbulent microfluidic flow appears to be produced.

An improved linear peristaltic pump that is able to be manufactured using fewer parts while also improving the performance and the reliability of the pump. The linear peristaltic pump utilizes a leaf spring in direct contact with a tube and is therefore able to provide smooth transitions in the forces exerted on the tube.

A clamping device includes at least one clamp-in unit for clamping in at least one flexible-tube delivery element of a delivery device, wherein, for a delivery of a medium, a drive force is exertable on said flexible-tube delivery element by a drive unit of the delivery device, when the flexible-tube delivery element is arranged in the clamp-in unit, the clamp-in unit is configured to clamp the flexible-tube delivery element so that it is curved as a whole, and includes at least one clamping element, which includes a convex abutment element realizing an abutment surface for the flexible-tube delivery element, wherein the clamp-in unit includes at least the clamping element, which has at least one angled clamping surface, and which includes at least one adhesive element that is arranged on the clamping surface of the clamping element.

A flushing system for a catheter, in particular for a catheter of a catheter pump, comprising a supply line having a pump section, a discharge line having a pump section and a pump, wherein the diameter of the pump section of the discharge line is smaller than the diameter of the pump section of the supply conduit, the pump interacts with the pump section of the supply line for supplying flushing fluid to the catheter, and the pump interacts with the pump section of the discharge line for discharging flushing fluid from the catheter.

A pump for pumping fluid includes a tube platen, a plunger, a bias member, inlet and outlet valves, an actuator mechanism, a position sensor, and a processor. The plunger is configured for actuation toward and away from the infusion-tube when the tube platen is disposed opposite to the plunger. The tube platen can hold an intravenous infusion tube. The bias member is configured to urge the plunger toward the tube platen.

A peristaltic pump disclosed herein includes a raceway, a plunger, a motor, and a heater. The raceway is configured to retain a tube (e.g., an IV tube). The plunger acts on the tube disposed within the raceway. The motor engages the plunger to actuate the plunger. The heater is disposed in thermal-conductive contact with the tube. That is, the heater, either through direct or indirect application, heats the tube.

The present invention refers to a peristaltic pump, especially refers to a linear peristaltic pump for precise and quantitative delivery of fluid, comprising a base, wherein, a lateral seat for fixing a flexible tube is provided on the base, a linear reciprocating movement mechanism is provided below the flexible tube; a sliding block is provided on the linear reciprocating movement mechanism, adapted for releasing and squeezing a flexible tube to moves up and down; a backflow preventing device is fixed on the base arranged close to the linear reciprocating movement mechanism. By adopting the above structure, a new operational principle of linear type is formed, and the structure of traditional rotary peristaltic pump is improved. The flexible tube is rarely abraded; it is easy to disassemble and assemble the flexible tube; and the feed liquid does not contact with the device.