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US 9,067,006 B2Granted
Compressible and expandable blade for a fluid pump
AssigneeEcp Entwicklungsgesellschaft Mbh
InventorThomas Toellner
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AssigneeEcp Entwicklungsgesellschaft Mbh
InventorThomas Toellner
Estimating the term…
The invention relates to a compressible and expandable blade for the rotor of a fluid pump having at least two lamellae which are disposed adjacently, are pivotable respectively relative to an axis of rotation of the rotor and moveable relative to each other, and abut against each other in the expanded state of the blade such that they form together a continuous blade surface.
A compressible and expandable blade for the rotor of a fluid pump, comprising:
A compressible and expandable blade for the rotor of a fluid pump, comprising:
A catheter pump for introduction into human vessels, in particular for intraventricular use, comprising a rotor with a blade being able to be disposed in a mammalian vessel, wherein the pump has a conveying direction for conveying body fluid and the blade hereby has a flow pressure side and a flow suction side, wherein the pump also comprises at least two individual rotor segments, each individual rotor segment having at least one lamellae disposed thereon, wherein when a first individual rotor segment is attached to a second individual rotor segment, at least two lamellae which are disposed adjacently, are pivotable respectively relative to an axis of rotation of the rotor and moveable relative to each other, and abut against each other in the expanded state such that they form together a continuous blade surface.
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Control, e.g. regulation, of pumps, pumping installations or systems: rotors with adjustable blades
Location thereof with respect to the patient's body: implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
Implantable via, into, inside, in line, branching on, or around a blood vessel: by means of a catheter allowing explantation, e.g. catheter pumps…
Inside a ventricle, e.g. intraventricular balloon pumps: discharging the blood to the ventricle or arterial system via a cannula internal to the…
About 4 years 6 months of term left · ends 21 Apr 2031 (estimated)
The present invention resides in the field of mechanics or micromechanics and can be applied advantageously in particular in medical technology.
The invention relates to a blade for a pump and the design thereof. Of concern thereby is a pump having a rotor, the rotor being compressible and expandable in order to be able possibly to change the overall dimensions of the pump. In this way, the pump can be pushed through not readily accessible openings or into narrow pipe systems, for which purpose it is firstly compressed and, after it has been moved to the location of use, is expanded again.
Such a pump can be used particularly advantageously in medical technology in the field of heart pumps or other pumps for body fluids which are normally used with catheters.
There are thereby shown:
FIG. 1 schematically in a three-dimensional view, a rotor shaft and also a blade,
FIG. 2 schematically, a part of a blade with a plurality of lamellae,
FIG. 1 shows a rotor shaft 1 having a blade 2 which is composed of individual, schematically indicated lamellae 3, 4, 5. The individual lamellae are mounted pivotably respectively by their feet 3a, 4a, 5a on the rotor shaft 1, the feet of the lamellae together extending around the rotor shaft 1 in a spiral.
In this way, a helical structure of a blade is produced, which effects an axial conveyance of a liquid in the direction of the arrow 6 during rotation about the rotor shaft 1.
The particular embodiment of the blade according to the invention emerges in more detail from FIG. 2. In a first position, the lamellae 3, 4, 5 are represented there in the deployed, expanded shape of the blade, the adjacent lamellae abutting closely against each other by their longitudinal sides and hence forming a surface which is smooth and sealed for the flowing fluid.