Catheter device
First Claim
1. A catheter device comprising:
- a drive shaft;
a rotor connected to the drive shaft, wherein the drive shaft extends through the rotor beyond a distal end of the rotor;
a drive shaft bearing coupled to the drive shaft distal of the distal end of the rotor;
an expandable pump head; and
a covering;
wherein;
the expandable pump head comprises an expandable and compressible pump housing with a continuous tubular mesh structure having apertures;
the pump housing comprises a plurality of sections of the continuous tubular mesh structure arranged between a distal end of the housing and a proximal end of the housing, the plurality of sections including an intake section and a pump section;
the pump section includes the rotor;
a transition section is formed in the mesh structure between the pump section and the intake section;
at least some of the apertures of the mesh structure in the transition section are larger than the apertures of the mesh structure in the pump section;
the covering covers at least some of the apertures in the pump section when the expandable pump head is in an expanded state; and
the drive shaft bearing coupled to the drive shaft radially centers the rotor within the pump section.
1 Assignment
0 Petitions
Accused Products
Abstract
The catheter device comprises a motor at the proximal end of the catheter device and a drive shaft, extending from the proximal end section to the distal end section of the catheter device, for driving a rotating element located at the distal end of the catheter device. The catheter device also comprises a hose-like catheter body which encompasses the drive shaft and extends from the proximal end section to the distal end section. At the proximal end of the catheter device, the drive shaft is connected to a motor by a clutch. The clutch is a magnetic clutch with a proximal and a distal magnet unit. The proximal magnet unit is connected to the motor and the distal magnet unit to the drive shaft. The distal magnet unit is mounted fluid-tight in a clutch housing. The proximal end of the catheter body makes a fluid-tight connection with the clutch housing.
156 Citations
22 Claims
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1. A catheter device comprising:
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a drive shaft; a rotor connected to the drive shaft, wherein the drive shaft extends through the rotor beyond a distal end of the rotor; a drive shaft bearing coupled to the drive shaft distal of the distal end of the rotor; an expandable pump head; and a covering; wherein; the expandable pump head comprises an expandable and compressible pump housing with a continuous tubular mesh structure having apertures; the pump housing comprises a plurality of sections of the continuous tubular mesh structure arranged between a distal end of the housing and a proximal end of the housing, the plurality of sections including an intake section and a pump section; the pump section includes the rotor; a transition section is formed in the mesh structure between the pump section and the intake section; at least some of the apertures of the mesh structure in the transition section are larger than the apertures of the mesh structure in the pump section; the covering covers at least some of the apertures in the pump section when the expandable pump head is in an expanded state; and the drive shaft bearing coupled to the drive shaft radially centers the rotor within the pump section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A catheter device comprising:
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an expandable pump head comprising an expandable and compressible pump housing having a proximal end and a distal end, the pump housing comprising a continuous tubular mesh structure having a plurality of apertures, and a covering; a rotor; and a drive shaft extending through the rotor, from a proximal end to beyond a distal end of the rotor, the drive shaft connected at the distal end of the rotor to a drive shaft bearing; wherein; the expandable pump housing comprises an intake section and a pump section arranged between a proximal end and a distal end of the pump housing; the intake section widens conically towards the proximal end; the rotor is mounted in the pump section; the apertures in the pump section are smaller than the apertures in the intake section; the covering closes at least some of the apertures in the pump section when the expandable pump head is in an expanded state; and the drive shaft bearing radially centers the rotor within the pump section. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification