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 flow meter includes a coupler, a support member, an image sensor, and one or more processors. The coupler is adapted to couple to a drip chamber. The support member is coupled to the coupler. The image sensor has a field of view and is operatively coupled to the support member. The image sensor is positioned to view the drip chamber within the field of view. The processor is operatively coupled to the image sensor to receive image data from the image sensor and is configured to: capture an image of a drip chamber using an image sensor; compare the image of a drip chamber with a dynamic background image; and adjust a flow rate of fluid flowing through the fluid line in accordance with the comparison between the image of the drip chamber and the dynamic background image.

A system includes a drip chamber. The drip chamber has a proximal end coupled with a drug container and a distal end coupled with fluidic tubing. The drip chamber has a proximal check valve configured to prevent fluid flow in a proximal direction and to allow fluid flow in a distal direction when a cracking pressure threshold is overcome. The drip chamber also includes a distal check valve configured to prevent fluid flow in the proximal direction and to allow fluid flow in the distal direction when a cracking pressure threshold is overcome. The cracking pressure threshold of the proximal check valve and the cracking pressure threshold of the distal check valve in combination is greater than or equal to 1 PSId. The system also includes a pneumatic port between the check valves that is configured to pneumatically couple with a pneumatic feedback control system.

A securing device for securing an infusion appliance to an infusion container includes a first fastening element, which is designed in such a way that it is connectable to a fastening region of the infusion container, and a second fastening element, which is arranged at a distance from the first fastening element and which is designed in such a way that it is connectable to a fastening region of the infusion appliance. At least one connection element connects the first fastening element and the second fastening element to each other. The securing device can be used for medical infusion and transfusion arrangements.

The present invention discloses an anti-bubble infusion drip chamber. The anti-bubble infusion drip chamber comprises a drip chamber main body; the drip chamber main body has an upper portion and a lower portion, namely a drip chamber portion arranged on the upper portion and a filtering portion arranged on the lower portion; the filtering portion is provided with a liquid storage cavity communicated with an inner cavity of the drip chamber portion, and a liquid medicine filter and an air filter which are arranged on two sides of the liquid storage cavity; a liquid medicine flow channel is arranged on the side wall of the filter and is provided with a liquid inlet and a liquid outlet; the liquid inlet is formed above the liquid outlet; a liquid medicine filter membrane is arranged between the liquid inlet of the flow channel and the liquid storage cavity; and an air filter is arranged on the drip chamber main body on at least one side of the filter membrane. A horizontally-placed liquid medicine filter membrane in the traditional drip chamber can cause unsmooth flow of liquid medicine due to surface tension of the liquid medicine and accumulation of impurities. By making an improvement on the drip chamber, the liquid medicine filter membrane is vertically or obliquely arranged, so that on one hand, the impurities can be prevented from being accumulated on the surface of the filter membrane, and on the other hand, the surface tension of the liquid medicine can be destroyed.

Modular intravenous (IV) assemblies are provided. The modular IV assembly includes a drip chamber having a body and an inlet connector, a base housing coupled directly to a base portion of the drip chamber, the base housing having an inlet port in fluid connection with the drip chamber and a flow path cavity in fluid connection with the inlet port and a flow control assembly coupled directly to a first portion of the base housing. Any of a filter assembly, an anti-run dry member, a check valve and an air vent assembly may be included in the modular IV assembly. IV sets and methods of use are also provided.

Drip chamber detection assemblies for intravenous sets used with an infusion pump are provided. A drip chamber detection assembly includes a sensor coupled to a drip chamber. The sensor is positioned to generate signals related to the fluid level within the drip chamber. The signal data is transmitted to an infusion pump or a controller. A fluid level status or condition is determined and used for closed loop control of the infusion system, which generates an alarm and/or stops the infusion pump based on abnormal conditions. Methods of operating drip chamber detection assemblies are also provided.

The present disclosure relates to a drip device, including a drip bottle having a bottle mouth facing downward, since the bottle mouth faces downward, a liquid in the drip bottle is charged into a first connecting tube, an infusion channel, and a piston chamber when a pressing head is not pushed upward, a plug blocks a drip port, and the liquid cannot flow out from the drip port. When the pressing head is pushed upward to move the pressing head upward relative to a connecting cover, a piston head inserts into a piston chamber to separate the infusion channel from the piston chamber, the pressing head continues to move upward, a volume of the piston chamber is compressed, the liquid in the piston chamber will flow back to the drip bottle through a liquid outlet, and a volume of the infusion channel is also compressed.

Flow controllers for intravenous (IV) tubing are provided. A flow controller may include first and second structural members defining a cavity therebetween for a portion of the tubing, wherein the first structural member is linearly slidable along a length of the tubing to compress at least part of the portion of the tubing to control flow of a medical fluid through the tubing. A flow controller may include a first ramped wedge structure, a second ramped wedge structure configured to slide over the first ramped wedge structure to compress a portion of the IV tubing disposed between the first ramped wedge structure and the second ramped wedge structure, a yoke having a linear slot, a wheel having a pin that is radially separated form a center of the wheel and is slidably disposed in the linear slot, and a transfer structure coupled to the yoke and the first ramped wedge structure. IV sets that include a flow controller are also provided.

A system for blood cell separation, comprising:

a separation chamber (10) comprising an inlet port for blood (12), an outlet port for plasma (14) and at least an outlet port for cellular blood components (16) for the separation of whole blood;

a blood pump (20) for pumping whole blood into the inlet port for blood (12);

a plasma pump (22) for pumping plasma and/or target cells from the outlet port for plasma (14) out of the separation chamber (10);

a red blood cell tube (30) comprising a first end (32) and a second end (34), wherein the first end (32) of the red blood cell tube (30) is connected to the outlet port for cellular blood components (16) for allowing red blood cells to leave the separation chamber (10); and

a drip chamber (40) comprising a reservoir (42) and an inlet (46), wherein the second end (34) of the red blood cell tube (30) is connected to the inlet (46), wherein the second end (34) of the red blood cell tube (30) extends into the volume of the reservoir (42) for pressure equalization during pumping from the outlet port for plasma (14).