11 results about "Implantable Pump" patented technology

A system and method are provided for a body fluid management system for pumping body fluids such as lymph. The body fluid management system may include an implantable pump having: a rotor having a magnetic portion; and inlet and outlet pipes connected to a fluid chamber. The fluid chamber has a volume that can be selectively decreased or increased via the rotor. The rotor is designed to periodically open and close a bend valve at each of the inlet and outlet pipes to allow body fluid to enter the fluid chamber during an inhalation cycle and exit the fluid chamber during an exhalation cycle. The magnetic portion of the rotor can be rotated by an external controller positioned outside the body and near the pump. The external controller may have a magnet magnetically coupled to the rotor to rotate it.

An implantable pump includes a rigid housing with an oblate spheroid shape and having an inner chamber divided by a movable elastomeric membrane into a gas sub-chamber which is connectible through a drive line to an external pneumatic source, and a blood sub-chamber which is connectible through a graft assembly to an anatomical heart. The housing includes a blood port opening oriented at an angle and at the upper apex of the housing and connected to the blood sub-chamber, and a gas port opening to the gas sub-chamber that is situated at a lower apex of the housing. The pump is provided with a drive line that includes a gas conduit and a heart sensor, the drive line connectible to a drive system that is capable of delivering gas flow through the drive line gas conduit in response to signals driven by the heart sensor.

A blood flow assist device comprising an axial flow rotary pump, said pump comprising a rotatable impeller assembly 3 comprising a hub and one or more impeller blades 15, and an electromagnetic stator

The present invention relates to a pump (1) implantable in a human or animal body and comprising : an airtight casing (10), a dielectric elastomer tube (20) extending within said casing (10), arranged so that a volume (22) within said dielectric elastomer tube (20) is modified when a voltage is applied to said dielectric elastomer tube; a negative pressure chamber (N) between said dielectric elastomer tube (20) and said casing (10). The casing comprises two lateral edges (100a, 100b). The dielectric elastomer tube (A) is longitudinally pre-strained between those lateral edges.

Disclosed is a complex including: cellulose nanocrystals; at least one β-cyclodextrin molecule; and at least one curcumin molecule, suitable for use in the treatment of any kind of peripheral neuropathies. Further disclosed is a pharmaceutical composition including at least the complex and at least one pharmaceutically acceptable excipient. Also disclosed is the use of the complex or the pharmaceutical composition, in particular in the form of a hydrogel, a subcutaneous implant, an implantable pump, an implanted biofunctionalized nerve conduit, to improve the treatment compliance, to allow an extended release of the complex and to obtain better pharmacokinetics.

Disclosed are a fluid drainage devices and methods of use for drainage of edematous tissues of a patient. The devices include an inlet catheter comprising a plurality of lumens configured to receive fluid from the edematous tissues, wherein the plurality of lumens run axially parallel in the inlet catheter; an outlet catheter configured to be anchored at a sink; an implantable pump coupled to the inlet catheter and the outlet catheter, the pump having a rotating portion including a permanent magnet, the rotating portion configured to rotate in response to a magnetic force external to the patient to move fluid from the inlet of the inlet catheter to the second end of the outlet catheter; and an external controller configured to transcutaneously couple to the permanent magnet of the rotating portion to apply the magnetic force to the implantable pump.

The present invention relates to an implantable device for improving the pump function of the heart of a human patient by applying an external force on the heart muscle. The implantable device comprises at least one implantable pump device comprising: A fluid, A first reservoir having a first volume and at least one movable wall portion, for varying said first volume, and A second reservoir being in fluid connection with said first reservoir. Wherein said implantable pump device is adapted to allow free flow of fluid between said first reservoir and said second reservoir, and wherein said first reservoir, said second reservoir and said fluid connection forms a fully implantable closed pump device, and wherein said fully implantable closed pump device is adapted to transfer force from said first reservoir to said second reservoir.

An implantable pump system is provided, including an implantable blood pump suitable for use as a partial support assist device, the system further including an extracorporeal battery and a controller coupled to the implantable pump, and a programmer selectively periodically coupled to the controller to configure and adjust operating parameters of the implantable pump. The implantable pump includes a flexible membrane coupled to an electromagnetic actuator including a magnetic assembly and electromagnetic assembly, so that when the electromagnetic assembly is energized, the electromagnetic assembly causes wavelike undulations to propagate along the flexible membrane to propel blood through the implantable pump. The controller may be programmed by a programmer to operate at frequencies and duty cycles that mimic physiologic flow rates and pulsatility while operating in an efficient manner that avoids thrombus formation, hemolysis and / or platelet activation.

Systems and methods for performing Direct Sodium Removal (DSR) therapy are provided in which an implantable device includes a pump coupled to an inlet catheter designed for placement in a patient's peritoneal cavity, an outlet catheter designed to be coupled to the patient's bladder, and is operably coupled to an analyte sensor, the pump programmed to transfer and / or cease transfer of fluid from the patient's peritoneal cavity to the patient's bladder for voiding responsive to a level of analyte detected by the analyte sensor. In addition, the system may include a processor that computes an amount of analyte transferred per pumping session.

Systems and methods for controlling an implantable pump are provided. For example, the exemplary controller for controlling the implantable pump may only rely on the actuator's current measurement. The controller is robust to pressure and flow changes inside the pump head, and allows fast change of pump's operation point. For example, the controller includes, a two stage, nonlinear position observer module based on a reduced order model of the electromagnetic actuator. The controller includes an algorithm that estimates the position of the moving component of the implantable pump based on the actuator's current measurement and adjusts operation of the pump accordingly. Alternatively, the controller may rely on position measurements and / or velocity estimations.