Peristaltic micropump assemblies configured to pump fluid from a patient and/or deliver pharmaceutical agents to the patient are provided. In some embodiments, a micropump assembly can include a rotor configured to rotate about an axis and comprising a compressing member configured to rotate along a circumference, and a fluid chamber positioned at least partially around the circumference. The fluid chamber includes a round outer ring and a membrane attached to the outer ring and opposing an inner face of the outer ring. The compressing member is configured to compress the fluid chamber and move a fluid through the fluid chamber. The assembly can fit within a housing that is sized and shaped to be implanted in the patient. For example, the micropump assembly can be inserted into the patient's ocular cavity and configured to displace fluid from the patient's eye.

A linear cleaning peristaltic metering pump includes a pump body, a hose fixing accessory and an anti-backflow accessory. The hose fixing accessory is configured for arranging a working hose. The anti-backflow accessory is configured for clamping and loosening the working hose. The pump body is configured for performing reciprocating motion to clamp or loosen the working hose, thereby realizing a pumping effect by metering pump. The anti-backflow accessory is in cooperation with the pump body. The pump body comprises a roller lifting assembly, a roller hose-pressing assembly, a pump body outer cover assembly and a power transmission part. The power transmission part is configured for driving the roller lifting assembly to perform lifting linear motion, thereby driving the roller hose-pressing assembly to move and to clamp or loosen the working hose.

A pump for fluids includes a rotor sub-assembly, a tubing pressure block, an inlet guide, an outlet guide, and a tubing guard. The rotor sub-assembly includes at least one roller. The tubing pressure block includes a raceway and at least one projection. The tubing pressure block is movable between a first position and a second position. The inlet guide includes an inlet tubing channel and is disposed proximate to a first side of the tubing pressure block. The outlet guide includes an outlet tubing channel and is disposed proximate to a second side of the tubing pressure block. The tubing guard is configured to engage with the inlet guide and the outlet guide when the tubing guard is in a closed position and is configured to expose the rotor sub-assembly, the tubing pressure block, the inlet guide, and the outlet guide when in an open position.

Hydro excavation vacuum apparatus that process spoil material onboard the apparatus by separating water from the cut earthen material are disclosed.

Disclosed is a dual-stage fluidics system that has reduced pulsation. This system uses inexpensive peristaltic pumps and two reservoirs that dampen pulsations in pressure. Peristaltic pumps are used as air pressure pumps and sheath fluid pumps that are placed between the two pressurized reservoirs and isolate the two reservoirs. Since the two reservoirs are maintained at a substantially even pressure, pulsations are reduced so that the peristaltic pumps essentially provide air flow and sheath fluid flow as needed.

Disclosed is a dual-stage fluidics system that has reduced pulsation. This system uses inexpensive peristaltic pumps and two reservoirs that dampen pulsations in pressure. Peristaltic pumps are used as air pressure pumps and sheath fluid pumps that are placed between the two pressurized reservoirs and isolate the two reservoirs. Since the two reservoirs are maintained at a substantially even pressure, pulsations are reduced so that the peristaltic pumps essentially provide air flow and sheath fluid flow as needed.

Hydro excavation vacuum apparatus that process spoil material onboard the apparatus by separating water from the cut earthen material are disclosed.

A composite tube includes a first layer including a thermoplastic polymer having a Tg of not greater than about 160° C. and a second layer adjacent to the first layer, the second layer including an extruded silicone material. Further included is a method of forming the composite tube which includes providing a first layer including a thermoplastic polymer having a Tg of not greater than about 160° C.; receiving, by an extrusion system, a silicone material; forming, by the extrusion system, a second layer including the silicone material adjacent to the first layer; and irradiating the silicone material with a radiation source to substantially cure the silicone material.

A composite tube includes a first layer including a thermoplastic polymer having a Tg of not greater than about 160° C. and a second layer adjacent to the first layer, the second layer including an extruded silicone material. Further included is a method of forming the composite tube which includes providing a first layer including a thermoplastic polymer having a Tg of not greater than about 160° C.; receiving, by an extrusion system, a silicone material; forming, by the extrusion system, a second layer including the silicone material adjacent to the first layer; and irradiating the silicone material with a radiation source to substantially cure the silicone material.

Hydro excavation vacuum apparatus that process spoil material onboard the apparatus by separating water from the cut earthen material.