A fluid management system for the treatment of ascites, pleural effusion or pericardial effusion is provided including an implantable device including a positive displacement gear pump coupled to an inflow catheter and an outflow catheter, a battery, a processor, and at least one sensor configured to detect a presence of an infection marker, and an external charging and communication system configured to wirelessly communicate transcutaneously with the implantable device. The processor is programmed to periodically activate the pump to move fluid from a first cavity to a second cavity, e.g., the patient's bladder, via the inflow and outflow catheters; receive a signal indicative of the presence of the infection marker from the at least one sensor; generate an alert upon receipt of the signal; and communicate the alert to the external charging and communication system to notify the user.

A bilaterally driven drug infusion device with multiple infusion modes comprises: a drug storage unit (150); a piston (160) and a driving wheel (130,630) respectively connected with a screw (170), the driving wheel (130,630), provided with wheel teeth (131,631), drives the screw (170) movement by rotation, the piston (160) is arranged in the drug storage unit (150), the screw (170) advances the piston (160) to move; a driving unit (100,200,300,400,500,600) cooperating with the driving wheel (130,630); and a power unit (180,680), connected to the driving unit (100,200,300,400,500,600), outputs forces in two different directions (A′,B′) on the driving unit (100,200,300,400,500,600) to lead driving unit (100,200,300,400,500,600) to perform multiple-mode operation, making the infusion device have multiple infusion increments or infusion rates. The driving unit (100,200,300,400,500,600) has a variety of different pivot amplitudes, that is, the driving unit (100,200,300,400,500,600) can realize multiple-mode pivot, thereby achieving increment-adjustable infusion.

Disclosed herein is a syringe pump module with a non-decoupling drive mechanism and motor actuation mechanism to configured to bidirectionally move the non-decoupling drive mechanism.

This liquid medicine administration device includes a liquid medicine container, a gasket for expelling the liquid medicine in the liquid medicine container, a plunger that moves the gasket, a housing, a drive mechanism that advances the plunger, and a rotation restriction unit that restricts rotation of the plunger. The drive mechanism includes a motor and a feed screw. The plunger includes: a threaded portion threadedly engaged with the feed screw; and a plunger body that advances with feed screw rotation and that moves the gasket, while rotation of the plunger relative to the housing is restricted by the rotation restriction unit. The plunger includes a canceling mechanism that cancels transmission of a pressing force from the plunger body to the gasket when the plunger body receives an axial reaction force equal to or greater than a preset pressing force from the gasket during advancement with the feed screw rotation.

An integrated artificial pancreas with multiple infusion modes, includes: drug infusion unit; program unit comprising input end and output end, and the input end comprises a plurality of electrically connective regions for receiving signals of analyte data in the body fluid, after the output end is electrically connected to the power unit, the program unit controls whether the drug infusion unit delivers drugs; and an infusion cannula provided with at least two detecting electrodes, the infusion cannula is the drug infusion channel, the electrodes are disposed on the cannula wall. It takes only one insertion to perform both analyte detection and drug infusion.

The present invention relates to a rotary blood pump with a double pivot contact bearing system with an operating range between about 50 mL/min and about 1500 mL/min, wherein the force on the upper bearing is less than 3N during operating speeds up to 6000 rpm. The rotary blood pump is part of a blood pump system that includes blood conduit(s), a control system with optional sensors, and a power source. Embodiments of the present invention may include elements designed to increase the length of time the rotary blood system can operate effectively in vivo, including wear resistant bearing materials, a rotor back plate for magnetic attraction of the rotor to reduce bearing pivot bearing forces and wear, a rotor size and shape and a bearing gap that combine to create a hydrodynamic bearing effect and reduce bearing pivot bearing forces and wear, improved intravascular conduits with increased resistance to thrombosis, conduit insertion site cuffs to resist infection, and conduit side ports amenable to the easy insertion of guidewire and catheter-based medical devices to treat conduits and related blood vessels to maintain blood pump system function over time.

The disclosure includes a vein ablation system, comprising a catheter having an elongated body. In some embodiments, the vein ablation system comprises an ablation device at a distal portion of the elongated body. According to some embodiments, the vein ablation system comprises a control device at a proximal portion of the elongated body. The control device may comprise an input mechanism configured to simultaneously control at least two of a longitudinal translation of the ablation device through a target vessel, a rotation of the ablation device about a central longitudinal axis, and an infusion of a chemical agent into the target vessel.

A unilaterally driven closed-loop artificial pancreas, includes: a detection module, an infusion module and a program module. The infusion module includes a reservoir, a piston, a screw, a driving unit, a driving wheel provided with wheel teeth, at least one linear actuator and at least one reset unit. The driving unit includes at least one rotating shaft and at least one driving member. The driving member includes a driving end. The driving member rotates around the rotating shaft. The linear actuator and the reset unit respectively connect to the driving member. The program module is connected to the detection module and the infusion module respectively, imported the total daily dose algorithm and the current insulin infusion algorithm. The driving power can be controlled, and it can accurately calculate the TDD value and the current insulin infusion dose.

A bilaterally driven closed-loop artificial pancreas, includes: a detection module; an infusion module, the infusion module includes: a drug storage unit; a screw and a driving wheel provided with wheel teeth, the driving wheel driving the screw and the screw pushing a piston; a driving unit cooperating with the driving wheel, the driving unit including at least two driving portions; a power unit connected to the driving unit, the power unit outputting two forces in two directions on the driving unit; and a program module. The power unit is controlled by the program module. The artificial pancreas has higher infusion efficiency and can enhance user experience.

A bilaterally driven closed-loop artificial pancreas, includes: a detection module; an infusion module, including: a drug storage unit; a screw and a driving wheel provided with wheel teeth, the driving wheel driving the screw and the screw pushing a piston; a driving unit cooperating with the driving wheel, the driving unit including at least two driving portions; a power unit connected to the driving unit, the power unit outputting two forces in two directions on the driving unit; and a program module imported the total daily dose algorithm and the current insulin infusion algorithm. The artificial pancreas can accurately calculate the TDD value and the current insulin infusion dose, and enhance user experience.